CN106041108B - Dilval dry granulation and methane vapor reforming waste-heat recovery device and method - Google Patents

Dilval dry granulation and methane vapor reforming waste-heat recovery device and method Download PDF

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CN106041108B
CN106041108B CN201610381128.6A CN201610381128A CN106041108B CN 106041108 B CN106041108 B CN 106041108B CN 201610381128 A CN201610381128 A CN 201610381128A CN 106041108 B CN106041108 B CN 106041108B
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dilval
methane
dry granulation
vapor
reforming reaction
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CN106041108A (en
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吕学伟
邱杰
张颖异
吕学明
王伦伟
贺文超
党杰
白晨光
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Chongqing University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/10—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/40—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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  • Environmental & Geological Engineering (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

The invention provides a kind of dilval dry granulation and methane vapor reforming waste-heat recovery device and method,The dilval dry granulation and methane vapor reforming waste-heat recovery device structure are relatively simple,Production is implemented and uses operation all relatively simple,And with reference to its dilval dry granulation and methane vapor reforming exhaust heat recovering method,While using dry granulation method preferably to ensure the refinement granulation effect to dilval,The required resource for being converted into methane-steam reforming can also be reclaimed by the multistage of Physical joint chemical method to the waste heat of state dilval,It can help to improve the recovery utilization rate to dilval residual heat resources,So as to effectively solve to melt the granulation difficult processing of dilval in the prior art to meet stainless steel-making process requirement,And its residual heat resources recovery utilization rate it is low the problem of,With good industrial application value,Can smelter popularization and application at home.

Description

Dilval dry granulation and methane vapor reforming waste-heat recovery device and method
Technical field
The present invention relates to metallurgical engineering, environmental protection and energy saving field, the energy-saving and emission-reduction of metallurgical process, metallurgical cinder are related generally to Dry granulation, more particularly to a kind of dilval dry granulation and methane vapor reforming waste-heat recovery device and method.
Background technology
Need to add ferronickel raw material in stainless steel production, particle when ferronickel enters stove is smaller, can more shorten the smelting of steel-making Refine the time, but simultaneously in order to ensure that ferronickel particle can pass through surface slag blanket, that is, require that its quality can not be too small, thus ferronickel The particle of alloy can not be too small, and usual particle diameter is optimal in 10 ~ 40mm.At present, in ferronickel metallurgical technology, the country is whether Blast Furnace Method, blast furnace process or rotary kiln prereduction-electric furnace smelting process, in subsequent melt ferronickel water process, mostly using biography Pig machine ingot casting+Mechanical Crushing method of system.Smelting enterprise small to ferronickel yield, ferronickel grade is low, using pig machine ingot casting Method, manufacturing condition can substantially meet requirement.But for high-grade nickel ferroalloy（Nickel content is more than 25%）, due to molten Point is high, and silicon, carbon content are relatively low, poor fluidity, and mold can be caused to consume, and big, stripping result is poor, the residual iron time length of equipment cleaning, from And cast iron cycle period is caused to be grown, it is difficult to meet the needs of extensive ferronickel production；Simultaneously as nickel grade is high, ferronickel rigidity By force, ingot casting burr is difficult to clear up, and product appearance physical quality is poor, and yield rate and the cast iron rate of recovery are all low；The ferronickel finally obtained Crumb size is all bigger, and its particle diameter is typically in the range of 150 ~ 200 millimeters, it is necessary to which further crushing and processing could preferably Meet stainless steel-making process requirement, this undoubtedly adds crushing and processing cost and stainless steel smelting cost.
Further, since the tapping temperature of dilval is higher（Usually 1600 ~ 1650 DEG C）, using " pig machine ingot casting+ The method of Mechanical Crushing " during obtaining dilval block, is typically directly closed by way of water-spraying control to ferronickel Ingot mould cools, and so not only needs the substantial amounts of new water resource of consumption, is also easy to produce hydrogen in Cooling Process in dilval The explosion hazard gases such as gas, while easily it is mingled with impurity in the hot water obtained after water cooling, transmission pipeline fouling and clogging is easily caused, these disadvantages The steam, the hot water that all limit obtained by it is held to directly apply to heating, the water cooling waste heat for causing to melt dilval is difficult to pass through The form of heating is recycled.Also there are some waste heat recovery schemes, melting dilval water cooling institute is reclaimed by heat exchanger The waste heat of steam, hot water is obtained for generating electricity, but the efficiency utilization rate of its cogeneration generally can only reach 20 ~ 25%, waste heat Resource utilization is low.
Therefore, in face of melt the granulation difficult processing of dilval in the prior art with directly meet stainless steel-making process will Ask and the problem of its residual heat resources recovery utilization rate is low, melting dilval can either preferably be realized by needing one kind badly in industry Granulation, and can enough possess the technology of higher residual heat resources recovery utilization rate.
The content of the invention
For above shortcomings in the prior art, it is an object of the invention to provide a kind of dilval dry granulation And methane vapor reforming waste-heat recovery device, while it is used to realize to the granulation processing of liquid molten dilval, moreover it is possible to Enough waste heats to state dilval are subject to the required resource that multistage recovery is converted into methane-steam reforming, can help to carry The high recovery utilization rate to dilval residual heat resources, to solve to melt in the prior art the granulation difficult processing of dilval with The problem of meeting stainless steel-making process requirement and its low residual heat resources recovery utilization rate.
To achieve the above object, present invention employs following technical scheme：
A kind of dilval dry granulation and methane vapor reforming waste-heat recovery device, including dry granulation device, reformation Reaction bed, slag particle collector, water circulation evaporative condenser, water circulation heat exchanger and methane separation device；
The top of the dry granulation device is provided with dilval liquid entrance and gas vent, the middle position in dry granulation device Centrifugal granulation device, the bottom of dry granulation device and the reforming reaction are provided with the position directly below of dilval liquid entrance The top of bed connects connection；The bottom of reforming reaction bed is provided with funnelform discharging opening, and the bottom of reforming reaction bed is close The side wall of funnel-form discharging opening opening position is provided with methane vapor air inlet；It is anti-that the slag particle collector face is arranged at reformation Answer at the unloading position below the discharging opening of bed, the water circulation evaporative condenser is arranged at the bottom of slag particle collector and can Heat transfer is carried out between slag particle collector, and the steam outlet of water circulation evaporative condenser is communicated to the first of reforming reaction bed Alkane vapor air inlet；
Gas vent at the top of the dry granulation device is connected by being disposed with the gas channel of air exhauster and deduster The air-flow heat exchanger channels entrance of water circulation heat exchanger is passed to, water circulation heat is flowed to from dry granulation device by air exhauster certain driving air-flow The air-flow heat exchanger channels of exchanger；Air-flow heat exchanger channels outlet the entering to methane separation device of the water circulation heat exchanger Gas port, and the recirculated water heat exchange steam (vapor) outlet of water circulation heat exchanger is communicated to the methane vapor air inlet of reforming reaction bed； The methane separation device is used to isolate methane from the gas of entrance, and by isolated methane and mixed tail gas respectively from Its methane gas exports and mixed tail gas outlet discharge, and the methane gas outlet of methane separation device is also communicated to reforming reaction bed Methane vapor air inlet.
In above-mentioned dilval dry granulation and methane vapor reforming waste-heat recovery device, as improvement project, institute State rotary drive motor that the centrifugal granulation device in dry granulation device sets straight up by drive shaft and installed in rotation Porous centrifugation revolving cup in the drive shaft of motor is formed；It is described it is porous centrifugation revolving cup have a horizontally disposed bottom of a cup and The wall of cup extended straight up along bottom of a cup edge, the ferronickel that is opening up and being right against dry granulation device of porous centrifugation revolving cup close Golden liquid entrance, the logical of some rows is arranged into from bottom to top circumferentially arranged with from bottom of a cup opening position on the wall of cup of porous centrifugation revolving cup Hole, the thickness of the wall of cup is 5 ~ 10mm, and the aperture of the through hole is 10 ~ 20mm, is arranged in the two neighboring through hole of same a line Spacing between edge is 5 ~ 10mm, and the spacing being arranged between the two neighboring through hole edge of adjacent rows is 6 ~ 15mm, and Through hole per adjacent rows is staggered.
In above-mentioned dilval dry granulation and methane vapor reforming waste-heat recovery device, as improvement project, institute State water circulation heat exchanger and be additionally operable to collect vapor in its air-flow heat exchanger channels and cool down condensed condensed water and pass through condensation Water output is discharged, and the recirculated water water leg phase of the condensation water output and water circulation evaporative condenser of water circulation heat exchanger Connection.
In above-mentioned dilval dry granulation and methane vapor reforming waste-heat recovery device, preferably, institute It is moving bed or fluid bed to state reforming reaction bed.
In above-mentioned dilval dry granulation and methane vapor reforming waste-heat recovery device, preferably, institute State methane separation device and use stage variable pressure adsorption tower.
In above-mentioned dilval dry granulation and methane vapor reforming waste-heat recovery device, as improvement project, institute State and plate feed is provided between the discharging opening of reforming reaction bed and slag particle collector, to carry out the discharging opening of reforming reaction bed Feeding to slag particle collector.
Accordingly, present invention also offers dilval dry granulation and methane vapor reforming exhaust heat recovering method；For This, present invention employs following technical scheme：
A kind of dilval dry granulation and methane vapor reforming exhaust heat recovering method, are done using above-mentioned dilval Method is granulated and methane vapor reforming waste-heat recovery device is implemented as follows：
1）Startup optimization dilval dry granulation and methane vapor reforming waste-heat recovery device, control its dry granulation Centrifugal granulation device rotary speed is 100 ~ 300rpm in device, and is passed through first into reforming reaction bed by its methane vapor air inlet Alkane vapor, dilval dry granulation and methane vapor reforming waste-heat recovery device are driven by the air exhauster on gas channel Interior airflow circulating；
2）The dilval liquid entrance that 1600 ~ 1650 DEG C of liquid molten dilval is injected at the top of dry granulation device, The centrifugal granulation device flowed into dry granulation device, is thrown out of under the action of the centrifugal force, subsequently breaks up, is granulated into molten drop, and flies Dilval molten drop in row carries out heat convection in surface tension and with the air-flow that rises in dry granulation device, is frozen into 1000 ~ 1100 DEG C of dilval particle, falls into reforming reaction bed；
3）Dilval particle into reforming reaction bed is continuing to fall and is piling up stop in reforming reaction bed During, the air-flow with rising in reforming reaction bed carries out heat convection again so that and dilval particle temperature is down to 700 ~ 750 DEG C, then the discharging opening from reforming reaction bed bottom be emitted into slag particle collector and collected, and in slag particle collector Dilval particle carries out heat exchange with water circulation evaporative condenser so that the heated steaming of recirculated water in water circulation evaporative condenser Send vapor and vapor is delivered to the methane vapor air inlet of reforming reaction bed by steam outlet, hence into Reforming reaction is participated in reforming reaction bed and dry granulation device；
4）In step 2）~3）During, under the swabbing action of the air exhauster on gas channel, enter from methane vapor The methane vapor that gas port enters reforming reaction bed is flowed upwardly into dry granulation device, and in reforming reaction bed and dry granulation device It is interior directly to be contacted with dilval particle, reforming reaction generation one occurs in the presence of heated and dilval is as catalyst Carbonoxide and hydrogen, the mixed gas that then carbon monoxide, hydrogen and the complete methane vapor of unreacted are formed is from dry method grain Change the gas vent inflow stream passage at the top of device, the air-flow heat exchanger channels of water circulation heat exchanger are entered after removing dust device dedusting Inside exchanged heat, the vapor in mixed gas is condensed separation in the air-flow heat exchanger channels of water circulation heat exchanger, simultaneously So that the heated vapor and by the recirculated water steam (vapor) outlet that exchanges heat that vapor is defeated of evaporating of the recirculated water of water circulation heat exchanger The methane vapor air inlet of reforming reaction bed is delivered to, it is anti-hence into reformation is participated in reforming reaction bed and dry granulation device Should；The mixed gas for removing vapor flows into methane separation by the air-flow heat exchanger channels outlet of water circulation heat exchanger again Device so that remove to export from methane gas after the methane in the mixed gas of vapor is separated in methane separation device and discharge, Then come back to by the methane vapor air inlet of reforming reaction bed in reforming reaction bed and dry granulation device and participate in reforming Reaction, and remove the carbon monoxide in the mixed gas of vapor, hydrogen in methane separation device with after methane separation from mixing Offgas outlet is discharged.
Compared to prior art, the present invention has the advantages that：
1st, dilval dry granulation of the invention and methane vapor reforming waste-heat recovery device and method, are employed dry Method shotting preferably to ensure the refinement granulation effect to dilval, and additionally uses on this basis to more than dilval The Physical of thermal resource reclaims with the united three-level of chemical method so that the residual heat resources of dilval are used to steam as methane water Gas reforming reaction heat energy supply and chemical energy supply, and dilval reforming reaction is delivered heat to as physics after obtained by gaseous mixture The waste heat of itself after heat energy and the dilval heat transfer of body, then it is used for conversion by two different phases and produces vapor simultaneously Return and participate in reforming reaction, so as to which the supply that new vapor is passed through into reforming reaction bed be greatly decreased, reached reduction first The purpose of the production cost of vapor resource needed for alkane steam reforming reaction, is effectively increased to dilval residual heat resources Organic efficiency and utilization rate.
2nd, in dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device and method, it is not necessary to Catalyst is additionally added for methane-steam reforming, and directly by dilval itself as promotion methane vapor The catalyst of reforming reaction, it is that form is utilized to the another kind of dilval resource.
3rd, using the dilval dry granulation and methane vapor reforming waste-heat recovery device and method of the present invention, from nickel Discharged mixed the outlet of the methane separation device mixed tail gas of ferroalloy dry granulation and methane vapor reforming waste-heat recovery device Close the mixed gas that the main component in tail gas is carbon monoxide, hydrogen（That is water-gas）, wherein not containing industrial refuse not only Gas, avoid extra industrial refuse processing cost, and water-gas or a kind of more conventional industrial fuel and hydrogen manufacturing Raw material, right and wrong further embody the present invention program for more than dilval often with the industrial products for having industrial application value The Optimum utilization of thermal resource.
4th, dilval dry granulation of the invention and methane vapor reforming waste-heat recovery device and method, not only may be used For realizing the reformation of methane vapor, the alkanes such as propane light hydrocarbon and vapor are also implemented for Reform.
5th, in dilval dry granulation and methane vapor reforming waste-heat recovery device of the invention, additionally it is possible to by right The structure of centrifugal granulation device is improved in its dry granulation device, and porous centrifugation revolving cup is granulated dilval, substantially increase from Utilization efficiency of the heart granulating device to rotational energy, and then it is favorably improved granulated processed efficiency.
6th, dilval dry granulation and methane vapor reforming waste-heat recovery device structure of the invention are relatively simple, raw Production is implemented and uses operation all relatively simple, and combines its dilval dry granulation and methane vapor reforming waste heat recovery Method, while realizing to the granulation processing of liquid molten dilval, additionally it is possible to pass through physics to the waste heat of state dilval The multistage recovery of method joint chemical method is converted into the required resource of methane-steam reforming, can help to improve and ferronickel is closed The recovery utilization rate of golden residual heat resources, so as to effectively solve to melt the granulation difficult processing of dilval in the prior art to meet not The problem of steel smelting technological requirement of becoming rusty and its low residual heat resources recovery utilization rate, there is good industrial application value, Ke Yi Domestic smelter popularization and application.
Brief description of the drawings
Fig. 1 is preferable to carry out for one kind of dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device Structural representation.
Fig. 2 is centrifugal granulation device in dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device The cross section structure diagram of the porous centrifugation revolving cup specific implementation structure of prioritization scheme.
Fig. 3 is the cooling slag particle figure of gained in the embodiment of the present invention three.
Embodiment
Be directed in the prior art melt dilval granulation difficult processing with meet stainless steel-making process requirement and its The problem of residual heat resources recovery utilization rate is low is solved, it is necessary to start with terms of granulating technique, waste heat recovery two simultaneously.With The molten alloy granulating method of " pig machine ingot casting+Mechanical Crushing " is compared, and dry granulation method is by molten alloy by centrifugal force Throw away so that the molten alloy droplets thrown away are particle with cooling and solidifying after convection gas heat exchange, granulation are realized, according to molten alloy Surface tension and viscous force, by the rotating speed of centrifugal granulation device in appropriate control dry granulation device, then it is readily obtained 50mm The granulated product of following particle diameter, for the granulation processing for melting dilval, such granulation granularity condition can be compared with The good requirement for meeting stainless steel-making process.But the waste heat during how lifting melting dilval dry granulation returns Rate of producing effects is a new technical barrier again, because if only by profit after convection gas and dilval progress physics heat exchange The waste heat absorbed with gas carries out generation mode, still exist cogeneration efficiency is limited, residual heat resources recovery utilization rate compared with The problem of low, thus must take into consideration residual heat resources are taken physical recovering method joint chemical recovering method mode, could improve more than Thermal resource recovery utilization rate, meanwhile, the united waste heat chemical recovering method scheme of institute also needs to avoid to dilval grain products Pollution, also, as the technical requirements in higher level face, the product obtained by waste heat chemical recovering method scheme itself, preferably not Containing industrial refuse, with avoid because increase the processing cost of gained industrial refuse is caused waste heat recovery scheme integral into This increase, or even waste heat chemical recovering method scheme itself products therefrom are preferably able to as the industry production with industrial application value Product, it can so make it that the value that dilval residual heat resources reclaim is maximized as far as possible.
Based on above-mentioned technical thought, in order to preferably solve to melt in the prior art the granulation difficult processing of dilval with The problem of meeting stainless steel-making process requirement and its low residual heat resources recovery utilization rate, the invention provides a kind of conjunction of ferronickel Golden dry granulation and methane vapor reforming waste-heat recovery device, and carry out dilval dry granulation and first using the device The method of alkane steam reforming waste heat recovery processing, while realizing to the granulation processing of liquid molten dilval, additionally it is possible to It is subject to the required resource that multistage recovery is converted into methane-steam reforming to the waste heat of state dilval, realizes to waste heat The Physical of resource and the combined recovery of chemical method, so as to help to improve the recovery utilization rate to dilval residual heat resources, and And waste heat chemical recovering method scheme products therefrom is water-gas（Main component is carbon monoxide and hydrogen）, it is with commercial Application The industrial products of value and be free of industrial refuse product.
Technical scheme is described in detail below.
As shown in figure 1, the present invention dilval dry granulation and methane vapor reforming waste-heat recovery device mainly by Dry granulation device 10, reforming reaction bed 20, slag particle collector 30, water circulation evaporative condenser 40, the and of water circulation heat exchanger 50 The part of methane separation device more than 60 is formed.Wherein, the top of dry granulation device 10 is provided with dilval liquid entrance 11 and gas vent 12, the middle part in dry granulation device 10, which is located at the position directly below of dilval liquid entrance, is provided with centrifugal granulation device 70, does The bottom of method pelletizer 10 connects with the top of the reforming reaction bed 20 and is connected；The bottom of reforming reaction bed 20 is provided with funnel The discharging opening 21 of shape, and the bottom of reforming reaction bed 20 is provided with methane vapor close to the side wall of funnel-form discharging opening opening position Air inlet 22, herein, methane vapor air inlet can be provided only with one, can also be provided with multiple, and each methane Vapor air inlet is used to be passed through methane vapor, methane gas or vapor；Then face is arranged at weight to slag particle collector 30 At the unloading position of the lower section of discharging opening 21 of whole reaction bed, and water circulation evaporative condenser 40 is arranged at the bottom of slag particle collector 30 Portion simultaneously can carry out heat transfer between slag particle collector, and the steam outlet 41 of water circulation evaporative condenser 40 is communicated to weight The methane vapor air inlet 22 of whole reaction bed 20.The gas vent 12 at the top of dry granulation device 10 is by being disposed with exhausting The gas channel of machine 13 and deduster 14 is communicated to the air-flow heat exchanger channels entrance of water circulation heat exchanger 50, is driven by air exhauster 13 Stream of taking offence flows to the air-flow heat exchanger channels of water circulation heat exchanger 50 from dry granulation device 10；The air-flow of water circulation heat exchanger 50 Heat exchanger channels outlet to methane separation device 60 air inlet, and water circulation heat exchanger 50 recirculated water heat exchange steam (vapor) outlet 51 are communicated to the methane vapor air inlet 22 of reforming reaction bed 20；Methane separation device 60 is then used to separate from the gas of entrance Go out methane, and isolated methane and mixed tail gas are exported into 62 rows from its methane gas outlet 61 and mixed tail gas respectively Go out, and the methane gas outlet 61 of methane separation device is also communicated to the methane vapor air inlet 22 of reforming reaction bed.
For specific implementation, in the dilval dry granulation of the present invention and methane vapor reforming waste heat recovery dress In putting, according to the surface tension and viscous force of melting dilval, filled by centrifugal granulation in appropriate control dry granulation device The rotating speed put, it is easier to obtain the dilval granulated product of below 50mm particle diameters, can preferably meets stainless steel smelting work The requirement of skill.But in order to preferably ensure the granulation effect to dilval, centrifugal granulation device in dry granulation device can be with Using the structure design of optimization, rotation driving that the centrifugal granulation device of the optimizing structure design is set straight up by drive shaft Motor and the porous centrifugation revolving cup in the drive shaft of rotary drive motor are formed；As shown in Fig. 2 the porous centrifugation Revolving cup 71 has a horizontally disposed bottom of a cup 71a and wall of cup 71b extended straight up along bottom of a cup edge, porous centrifugation revolving cup 71 dilval liquid entrance that is opening up and being right against dry granulation device, it is porous centrifugation revolving cup wall of cup 71b on circumferentially Provided with the through hole 71c for being arranged into some rows from bottom to top from bottom of a cup opening position, the thickness of the wall of cup is 5 ~ 10mm, the through hole Aperture be 10 ~ 20mm, the spacing being arranged between the two neighboring through hole edge of same a line is 5 ~ 10mm, is arranged in adjacent two Spacing between capable two neighboring through hole edge is 6 ~ 15mm, and the through hole per adjacent rows is staggered.The optimization structure Centrifugal granulation device employ the porous centrifugation revolving cup of Unique physical design, the wall of cup of porous centrifugation revolving cup erects along bottom of a cup edge Directly upwardly extend, and circumferentially arranged with the through hole for being arranged into some rows from bottom to top from bottom of a cup opening position on wall of cup, so as to from During the heart is granulated, the liquid molten dilval into porous centrifugation revolving cup is difficult to throw away from the top edge of wall of cup, but It is forced to squeeze from the through hole on wall of cup under rotary centrifugal force effect and gushes, forms the diameter slag liquid suitable with through-hole aperture Line, and subsequently break up, be granulated into molten drop, so as to which the generation of block slag and slag wool be greatly reduced；On the wall of cup of porous centrifugation revolving cup The aperture of through hole is 10 ~ 20mm, and the dilval molten drop size being thrown out of is limited by through-hole aperture, hence in so that ferronickel closes The cooling granulation particle diameter obtained after golden molten drop cooling is also mainly distributed on 10 ~ 20mm section, without carrying out pulverization process again Just it can be directly used for stainless steel smelting production；Also, due to it is porous centrifugation revolving cup wall of cup on through hole from bottom of a cup opening position from It is lower and on be provided with multilayer, during centrifugal granulation, no matter in porous centrifugation revolving cup melting dilval accumulation it is less Or when more, melting dilval through hole of different height from wall of cup can be caused to gush out and be granulated well, from And make it that porous centrifugation revolving cup can be good at adapting to the change of different liquid molten dilval feed rates, reduce equipment Limitation to melting dilval feed rate, while also enable and rotate the porous rotational energy for centrifuging revolving cup in granulation It is fully utilized, centrifugal granulation device can be run with higher rotating speed, to improve granulated processed efficiency；It is in addition, more Hole centrifugation revolving cup wall of cup thickness be 5 ~ 10mm because wall of cup thickness should not it is excessive, otherwise on wall of cup through hole axial length mistake Length easily causes slag to adhere in through-holes, and then easily through hole is blocked, and causes through hole utilization rate to decline；And porous centrifugation turns Between through hole on cup wall of cup, the spacing being arranged between the two neighboring through hole edge of same a line is 5 ~ 10mm, is arranged in phase Spacing between the two neighboring through hole edge of adjacent two rows is 6 ~ 15mm, and the through hole per adjacent rows is staggered, and is so Ensure through hole on porous centrifugation revolving cup distribution situation will not it is excessively intensive and cause the slag liquidus gushed out from different through holes or Molten drop mutual conglomeration again because of hypotelorism, influence be granulated effect, also ensure through hole distribution situation will not it is excessively sparse and The less slag for causing accumulation in revolving cup of number of openings on porous centrifugation revolving cup wall of cup is caused not discharge quickly.As can be seen here, The centrifugal granulation apparatus structure of porous centrifugation revolving cup with the optimization design can preferably ensure the granulation to dilval Effect, and dilval is granulated by porous centrifugation revolving cup, profit of the centrifugal granulation device to rotational energy can be greatly improved With efficiency, and then it is favorably improved granulated processed efficiency.
In addition, the specific implementation of the dilval dry granulation and methane vapor reforming waste-heat recovery device in the present invention In, moving bed or fluid bed can be used to carry out the reforming reaction bed of methane-steam reforming, is avoided because completely Redesign reforming reaction bed and increase device manufacturing cost.And methane separation device is mainly used for the one of reforming reaction generation Methane in the mixed gas that carbonoxide, hydrogen and the complete methane vapor of unreacted are formed is separated with other gases, can To be achieved using stage variable pressure adsorption tower, its specific methane separation implementation belongs to prior art, is not the present invention Innovation point, no longer add to describe herein.
Dilval is implemented using the dilval dry granulation and methane vapor reforming waste-heat recovery device of the present invention Dry granulation and the method for methane vapor reforming waste heat recovery, specific implementation step are as follows：
1）Startup optimization dilval dry granulation and methane vapor reforming waste-heat recovery device, control its dry granulation Centrifugal granulation device rotary speed is 100 ~ 300rpm in device, and is passed through first into reforming reaction bed by its methane vapor air inlet Alkane vapor, dilval dry granulation and methane vapor reforming waste-heat recovery device are driven by the air exhauster on gas channel Interior airflow circulating；
2）The dilval liquid entrance that 1600 ~ 1650 DEG C of liquid molten dilval is injected at the top of dry granulation device, The centrifugal granulation device flowed into dry granulation device, is thrown out of under the action of the centrifugal force, subsequently breaks up, is granulated into molten drop, and flies Dilval molten drop in row carries out heat convection in surface tension and with the air-flow that rises in dry granulation device, is frozen into 1000 ~ 1100 DEG C of dilval particle, falls into reforming reaction bed；
3）Dilval particle into reforming reaction bed is continuing to fall and is piling up stop in reforming reaction bed During, the air-flow with rising in reforming reaction bed carries out heat convection again so that and dilval particle temperature is down to 700 ~ 750 DEG C, then the discharging opening from reforming reaction bed bottom be emitted into slag particle collector and collected, and in slag particle collector Dilval particle carries out heat exchange with water circulation evaporative condenser so that the heated steaming of recirculated water in water circulation evaporative condenser Send vapor and vapor is delivered to the methane vapor air inlet of reforming reaction bed by steam outlet, hence into Reforming reaction is participated in reforming reaction bed and dry granulation device；
4）In step 2）~3）During, under the swabbing action of the air exhauster on gas channel, enter from methane vapor The methane vapor that gas port enters reforming reaction bed is flowed upwardly into dry granulation device, and in reforming reaction bed and dry granulation device It is interior directly to be contacted with dilval, the oxidation of reforming reaction generation one occurs in the presence of heated and dilval is as catalyst Carbon and hydrogen, the mixed gas that then carbon monoxide, hydrogen and the complete methane vapor of unreacted are formed is from dry granulation device The gas vent inflow stream passage at top, enter in the air-flow heat exchanger channels of water circulation heat exchanger to enter after removing dust device dedusting Row heat exchange, the vapor in mixed gas are condensed separation in the air-flow heat exchanger channels of water circulation heat exchanger, simultaneously so that The recirculated water of water circulation heat exchanger is heated to be evaporated vapor and is delivered to vapor by recirculated water heat exchange steam (vapor) outlet The methane vapor air inlet of reforming reaction bed, hence into participating in reforming reaction in reforming reaction bed and dry granulation device；Go Except the mixed gas of vapor flows into methane separation device by the air-flow heat exchanger channels outlet of water circulation heat exchanger again so that Remove to export from methane gas after the methane in the mixed gas of vapor is separated in methane separation device and discharge, then pass through The methane vapor air inlet of reforming reaction bed, which comes back to, participates in reforming reaction in reforming reaction bed and dry granulation device, and goes Except the carbon monoxide in the mixed gas of vapor, hydrogen are arranged in methane separation device with being exported after methane separation from mixed tail gas Go out.
Pass through the present invention above-mentioned dilval dry granulation and methane vapor reforming waste-heat recovery device and its ferronickel Alloy dry granulation and methane vapor reforming exhaust heat recovering method can see, and come present invention employs dry granulation method more preferable Refinement granulation effect of the guarantee to dilval, and control in dry granulation device centrifugal granulation device rotary speed for 100 ~ 300rpm, reason are, are analyzed according to the surface tension of liquid molten dilval and viscous force, in 100 ~ 300rpm rotating speed Under the conditions of can preferably control dilval granulation particle diameter to be mainly distributed on below 50mm, also, if with reference to above-mentioned optimization The centrifugal granulation device of structure, it is ensured that dilval granular mass percentage of the granularity between 10 ~ 20mm accounts for 80 ~ 90% so that gained dilval grain graininess can better meet the requirement of stainless steel-making process.Meanwhile to ferronickel Under conditions of alloy carries out dry granulation, Physical and the united three-level of chemical method also have been carried out to the residual heat resources of dilval Recovery.Wherein, first order waste heat recovery is carried out in reforming reaction bed and dry granulation device, is entered from methane vapor air inlet The methane vapor entered directly contacts in reforming reaction bed and dry granulation device with dilval, by physics conduct heat and by Heat, reach the temperature conditionss needed for methane-steam reforming（More than 750 DEG C）, and dilval becomes the steaming of methane water The catalyst of reforming reaction occurs under gas high temperature so that with vapor highly endothermic reforming reaction generation carbon monoxide occurs for methane And hydrogen：CH4+ H2O → CO+3H2,ΔH=205.7kJ/mol；In the process, the waste heat of dilval is used to as first The chemical heat energy of alkane steam reforming reaction, while also pass through the mixed gas of gained after the reaction of physics heat transfer（Mainly Composition is carbon monoxide, hydrogen and the complete methane vapor of unreacted）Substantial amounts of gas sensible heat is obtained, the process also causes 1600 ~ 1650 DEG C of liquid molten dilval of dry granulation device is injected by the ferronickel conjunction for being granulated into 1000 ~ 1100 DEG C that cools Further by absorbing and cooling temperature to 700 ~ 750 DEG C after gold grain, slag is then emitted into by the discharging opening of reforming reaction bed bottom Grain collector.And second level waste heat recovery is used as, under the swabbing action of the air exhauster on gas channel, in whole dilval In dry granulation and methane vapor reforming waste-heat recovery device, it can be formed from reforming reaction bed to dry granulation device, again to water Recycle heat exchanger, the circulating current for arriving methane separation device again, being returned to reforming reaction bed, so as to promoting in reforming reaction bed and There is the mixed gas of a large amount of sensible heats in dry granulation device after reforming reaction（Main component be carbon monoxide, hydrogen and The complete methane vapor of unreacted）Exchanged heat by the air-flow for entering water circulation heat exchanger after the deduster dedusting on gas channel In passage, exchanged heat with the recirculated water in the recirculated water heat exchanger channels of water circulation heat exchanger, during being somebody's turn to do, in mixed gas Vapor be condensed in the air-flow heat exchanger channels of water circulation heat exchanger separation, while cause following for water circulation heat exchanger The heated methane water for evaporating vapor and vapor being delivered to reforming reaction bed by recirculated water heat exchange steam (vapor) outlet of ring water Steam air inlet, as the vapor resource for entering participation reforming reaction in reforming reaction bed and dry granulation device, and due to The temperature of mixed gas is high, contained sensible heat amount is big, therefore can pass through the heat exchange of water circulation heat exchanger and produce substantial amounts of vapor It is supplied in reforming reaction.Third level waste heat recovery is carried out between slag particle collector and water circulation evaporative condenser, due to slag Dilval particle temperature collected by grain collector still reaches 700 ~ 750 DEG C, therefore is entered by water circulation evaporative condenser The waste heat of dilval particle in one step recovery slag particle collector, and vapor caused by the heat absorption of water circulation evaporative condenser passes through Its steam outlet will be delivered to the methane vapor air inlet of reforming reaction bed, also serve as entering reforming reaction bed and dry method grain Change the vapor resource that reforming reaction is participated in device.It can thus be seen that be combined by above-mentioned Physical and chemical method three Level waste heat recovery, the residual heat resources of dilval are used to heat energy supply and chemical energy confession as methane-steam reforming Should, and catalyst need not be additionally added, dilval itself then becomes the catalysis for promoting methane-steam reforming Agent；And dilval reforming reaction is delivered heat to as physics after obtained by mixed gas heat energy and dilval heat transfer after itself Waste heat, then be used to conversion by two different phases and produce vapor and return to participation reforming reaction, so as to be greatly decreased The supply of new vapor is passed through into reforming reaction bed, has reached vapor resource needed for reduction methane-steam reforming Production cost purpose, effectively increase the organic efficiency and utilization rate to dilval residual heat resources.Moreover, pass through After above-mentioned processing, from dilval dry granulation and the methane separation device mixed tail gas of methane vapor reforming waste-heat recovery device Main component in the discharged mixed tail gas in outlet is the mixed gas of carbon monoxide, hydrogen（That is water-gas）, wherein not only Industrial refuse gas is not contained, avoids extra industrial refuse processing cost, and water-gas or a kind of more conventional Industrial fuel and hydrogen feedstock, right and wrong further embody the present invention program often with the industrial products for having industrial application value For the Optimum utilization of dilval residual heat resources.In addition, the dilval dry granulation and methane vapor reforming of the present invention Waste-heat recovery device and method, it not only can be only used for realizing the reformation of methane vapor, be also implemented for the alkane such as propane The reformation of hydro carbons light hydrocarbon and vapor, and there is similar technical principle and effect.
Technical principle based on dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device, as Further improvement project, as shown in figure 1, the water circulation heat exchanger 50 in device is additionally operable to collect in its air-flow heat exchanger channels Vapor cools down condensed condensed water and discharged by condensing water output 52, and the condensed water output of water circulation heat exchanger Mouth 52 is connected with the recirculated water water leg 42 of water circulation evaporative condenser 40；Since so, the air-flow of water circulation heat exchanger The condensed water that mixed gas in heat exchanger channels is condensed by heat exchange, which can be then collected, is delivered to water circulation evaporative condenser Recirculated water water leg so that these condensed waters be used in water circulation evaporative condenser with slag particle collector heat exchange be evaporated to Vapor, and then be delivered back into again in reforming reaction bed and dry granulation device and participate in reforming reaction, realize to condensed water and Its cold resource recycles.And it is used as dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device The improvement project of another aspect, as shown in figure 1, in device between the discharging opening 21 and slag particle collector 30 of reforming reaction bed 20 also Plate feed 80 can be had additional, is handled to carry out the discharging opening of reforming reaction bed to the feeding and distributing material of slag particle collector； Since so, plate feed can be passed through so that fall into the slag particle of slag particle collector in slag from the discharging opening of reforming reaction bed Laid more uniformly in grain collector, avoid collection of the slag particle in slag particle collector in reforming reaction bed discharging opening lower position In pile up and cause radiating uneven, so as to the heat between the slag particle and water circulation evaporative condenser that are more beneficial in slag particle collector Conduction, can preferably ensure heat exchange efficiency of the dilval particle with water circulation evaporative condenser in slag particle collector.On Improvement project of both stating, improved by the structure of not ipsilateral so that dilval dry granulation of the invention and methane Steam reforming waste-heat recovery device can possess more preferable heat recovery efficiency.
In addition it should be noted that methane-steam reforming involved in technical solution of the present invention, has been The more ripe technology of one application, thus be passed through needed for its reaction methane, the usage ratio of vapor, be art technology What personnel can be grasped according to its technological know-how, further related to dilval UTILIZATION OF VESIDUAL HEAT IN in addition in technical solution of the present invention In producing vapor resource provisioning in reforming reaction, therefore in practical operation, those skilled in the art can close according to ferronickel The supply of golden waste heat output vapor, suitably adjustment are additionally passed through methane, vapor is supplied in the usage ratio of reforming reaction, To meet actual processing operational requirements.
Technical scheme and its effect are further described in conjunction with embodiment below.It should be appreciated that It is that these embodiments are only used for further illustrating embodiment of the present invention, rather than for limiting the present invention.
Embodiment one：
Using dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device to melting dilval Granulation and waste heat recovery operation are carried out, and using the centrifugal granulation device of optimization structure proposed by the present invention in dry granulation device. Startup optimization dilval dry granulation and methane vapor reforming waste-heat recovery device, and pass through its methane vapor air inlet Methane vapor is passed through into reforming reaction bed, dilval dry granulation and methane water are driven by the air exhauster on gas channel Airflow circulating in steam reforming waste-heat recovery device；Then 1600 DEG C or so of liquid dilval is injected into dry granulation device The dilval liquid entrance at top, the centrifugal granulation device flowed into dry granulation device, centrifugal granulation device used use this hair The optimization structure of bright proposition, a diameter of 55 mm of its porous centrifugation revolving cup, is highly 135 mm, wall of cup thickness is 5mm, wall of cup The aperture of upper through hole is 10mm, and the spacing being arranged between the two neighboring through hole edge of same a line is 5mm, is arranged in adjacent two Spacing between capable two neighboring through hole edge is 6mm, and it is 100,200 and to control centrifugal granulation device rotary speed respectively 300rpm, flow into centrifugal granulation device liquid dilval be thrown out of under the action of the centrifugal force, subsequently break up, be granulated into it is molten Drop, and dilval molten drop in-flight carries out heat convection in surface tension and with the air-flow that rises in dry granulation device, 1000 DEG C or so of dilval particle is frozen into, falls into reforming reaction bed and piles up after a period of time from reforming reaction bed bottom Funnelform discharging opening is emitted into slag particle collector and collected, and rises during being somebody's turn to do in dilval particle reforming reaction bed Air-flow carries out heat convection again so that dilval particle temperature is down to 700 DEG C or so, therefore the nickel in slag particle collector Ferroalloy particles carry out heat exchange with water circulation evaporative condenser again, and its remaining sensible heat is converted into the water needed for reforming reaction and steamed Gas；And during above-mentioned, under the swabbing action of the air exhauster on gas channel, enter weight from methane vapor air inlet The methane vapor of whole reaction bed is flowed upwardly into dry granulation device, and is closed in reforming reaction bed and dry granulation device with ferronickel Gold grain directly contacts, and reforming reaction generation carbon monoxide and hydrogen occur in the presence of heated and dilval is as catalyst Gas, the mixed gas that then carbon monoxide, hydrogen and the complete methane vapor of unreacted are formed is at the top of dry granulation device Gas vent inflow stream passage, enter after removing dust device dedusting in the air-flow heat exchanger channels of water circulation heat exchanger and changed Heat, the vapor in mixed gas are condensed separation in the air-flow heat exchanger channels of water circulation heat exchanger, while water is followed The recirculated water of ring heat exchanger is heated to evaporate vapor, so as to which the sensible heat of mixed gas to be converted into the water needed for reforming reaction Steam, and remove the mixed gas of vapor（Main component is CH4, CO and H2）Changed again by the air-flow of water circulation heat exchanger The passage of heat outlet flow into methane separation device so that methane therein be separated after from methane gas export discharge, then with profit Another same flow back in reforming reaction bed and dry granulation device of vapor generated with waste heat is continued to cool down dilval particle and joined With reforming reaction, and remove the carbon monoxide in the mixed gas of vapor, hydrogen in methane separation device with after methane separation Export and discharge from mixed tail gas, and then the mixed gas to carbon monoxide, hydrogen can be exported by mixed tail gas（Water-gas） Collected and utilized, such as to as fuel energy or hydrogen feedstock etc..Granulated processed of the present embodiment to dilval As a result it is as shown in table 1：
The gained dilval grain graininess of 1 embodiment of table one forms（wt%）
Embodiment two：
Using dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device to melting dilval Granulation and waste heat recovery operation are carried out, and using the centrifugal granulation device of optimization structure proposed by the present invention in dry granulation device. Startup optimization dilval dry granulation and methane vapor reforming waste-heat recovery device, and pass through its methane vapor air inlet Methane vapor is passed through into reforming reaction bed, dilval dry granulation and methane water are driven by the air exhauster on gas channel Airflow circulating in steam reforming waste-heat recovery device；Then 1630 DEG C or so of liquid dilval is injected into dry granulation device The dilval liquid entrance at top, the centrifugal granulation device flowed into dry granulation device, centrifugal granulation device used use this hair The optimization structure of bright proposition, a diameter of 55 mm of its porous centrifugation revolving cup, is highly 135 mm, wall of cup thickness is 8mm, wall of cup The aperture of upper through hole is 15mm, and the spacing being arranged between the two neighboring through hole edge of same a line is 8mm, is arranged in adjacent two Spacing between capable two neighboring through hole edge is 10mm, and it is 100,200 and to control centrifugal granulation device rotary speed respectively 300rpm, flow into centrifugal granulation device liquid dilval be thrown out of under the action of the centrifugal force, subsequently break up, be granulated into it is molten Drop, and dilval molten drop in-flight carries out heat convection in surface tension and with the air-flow that rises in dry granulation device, 1050 DEG C or so of dilval particle is frozen into, falls into reforming reaction bed and piles up after a period of time from reforming reaction bed bottom Funnelform discharging opening is emitted into slag particle collector and collected, and rises during being somebody's turn to do in dilval particle reforming reaction bed Air-flow carries out heat convection again so that dilval particle temperature is down to 730 DEG C or so, therefore the nickel in slag particle collector Ferroalloy particles carry out heat exchange with water circulation evaporative condenser again, and its remaining sensible heat is converted into the water needed for reforming reaction and steamed Gas；And during above-mentioned, under the swabbing action of the air exhauster on gas channel, enter weight from methane vapor air inlet The methane vapor of whole reaction bed is flowed upwardly into dry granulation device, and is closed in reforming reaction bed and dry granulation device with ferronickel Gold grain directly contacts, and reforming reaction generation carbon monoxide and hydrogen occur in the presence of heated and dilval is as catalyst Gas, the mixed gas that then carbon monoxide, hydrogen and the complete methane vapor of unreacted are formed is at the top of dry granulation device Gas vent inflow stream passage, enter after removing dust device dedusting in the air-flow heat exchanger channels of water circulation heat exchanger and changed Heat, the vapor in mixed gas are condensed separation in the air-flow heat exchanger channels of water circulation heat exchanger, while water is followed The recirculated water of ring heat exchanger is heated to evaporate vapor, so as to which the sensible heat of mixed gas to be converted into the water needed for reforming reaction Steam, and remove the mixed gas of vapor（Main component is CH4, CO and H2）Changed again by the air-flow of water circulation heat exchanger The passage of heat outlet flow into methane separation device so that methane therein be separated after from methane gas export discharge, then with profit Another same flow back in reforming reaction bed and dry granulation device of vapor generated with waste heat is continued to cool down dilval particle and joined With reforming reaction, and remove the carbon monoxide in the mixed gas of vapor, hydrogen in methane separation device with after methane separation Export and discharge from mixed tail gas, and then the mixed gas to carbon monoxide, hydrogen can be exported by mixed tail gas（Water-gas） Collected and utilized, such as to as fuel energy or hydrogen feedstock etc..Granulated processed of the present embodiment to dilval As a result it is as shown in table 2：
The gained dilval grain graininess of 2 embodiment of table two forms（wt%）
Embodiment three：
Using dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device to melting dilval Granulation and waste heat recovery operation are carried out, and using the centrifugal granulation device of optimization structure proposed by the present invention in dry granulation device. Startup optimization dilval dry granulation and methane vapor reforming waste-heat recovery device, and pass through its methane vapor air inlet Methane vapor is passed through into reforming reaction bed, dilval dry granulation and methane water are driven by the air exhauster on gas channel Airflow circulating in steam reforming waste-heat recovery device；Then 1650 DEG C or so of liquid dilval is injected into dry granulation device The dilval liquid entrance at top, the centrifugal granulation device flowed into dry granulation device, centrifugal granulation device used use this hair The optimization structure of bright proposition, a diameter of 55 mm of its porous centrifugation revolving cup, is highly 135 mm, wall of cup thickness is 10mm, wall of cup The aperture of upper through hole is 20mm, and the spacing being arranged between the two neighboring through hole edge of same a line is 10mm, is arranged in adjacent Spacing between the two neighboring through hole edge of two rows is 15mm, and it is 100,200 and to control centrifugal granulation device rotary speed respectively 300rpm, flow into centrifugal granulation device liquid dilval be thrown out of under the action of the centrifugal force, subsequently break up, be granulated into it is molten Drop, and dilval molten drop in-flight carries out heat convection in surface tension and with the air-flow that rises in dry granulation device, 1100 DEG C or so of dilval particle is frozen into, falls into reforming reaction bed and piles up after a period of time from reforming reaction bed bottom Funnelform discharging opening is emitted into slag particle collector and collected, and rises during being somebody's turn to do in dilval particle reforming reaction bed Air-flow carries out heat convection again so that dilval particle temperature is down to 750 DEG C or so, therefore the nickel in slag particle collector Ferroalloy particles carry out heat exchange with water circulation evaporative condenser again, and its remaining sensible heat is converted into the water needed for reforming reaction and steamed Gas；And during above-mentioned, under the swabbing action of the air exhauster on gas channel, enter weight from methane vapor air inlet The methane vapor of whole reaction bed is flowed upwardly into dry granulation device, and is closed in reforming reaction bed and dry granulation device with ferronickel Gold grain directly contacts, and reforming reaction generation carbon monoxide and hydrogen occur in the presence of heated and dilval is as catalyst Gas, the mixed gas that then carbon monoxide, hydrogen and the complete methane vapor of unreacted are formed is at the top of dry granulation device Gas vent inflow stream passage, enter after removing dust device dedusting in the air-flow heat exchanger channels of water circulation heat exchanger and changed Heat, the vapor in mixed gas are condensed separation in the air-flow heat exchanger channels of water circulation heat exchanger, while water is followed The recirculated water of ring heat exchanger is heated to evaporate vapor, so as to which the sensible heat of mixed gas to be converted into the water needed for reforming reaction Steam, and remove the mixed gas of vapor（Main component is CH4, CO and H2）Changed again by the air-flow of water circulation heat exchanger The passage of heat outlet flow into methane separation device so that methane therein be separated after from methane gas export discharge, then with profit Another same flow back in reforming reaction bed and dry granulation device of vapor generated with waste heat is continued to cool down dilval particle and joined With reforming reaction, and remove the carbon monoxide in the mixed gas of vapor, hydrogen in methane separation device with after methane separation Export and discharge from mixed tail gas, and then the mixed gas to carbon monoxide, hydrogen can be exported by mixed tail gas（Water-gas） Collected and utilized, such as to as fuel energy or hydrogen feedstock etc..Granulated processed of the present embodiment to dilval As a result it is as shown in table 3：
The gained dilval grain graininess of 3 embodiment of table three forms（wt%）
Fig. 3, which is shown, is granulated resulting cooling slag particle in embodiment three., can by the cooling slag particle situation shown in Fig. 3 It is the cooling that method obtains using dilval dry granulation of the present invention and methane vapor reforming waste-heat recovery device to see Slag particle, its vitrifying degree is very high, and its slag particle particle diameter distribution is uniform, and sphericity is good, and slag wool is few, and granularity is mainly divided Cloth can directly meet stainless steel-making process requirement in 10 ~ 20mm scopes, and the utilization rate for cooling down slag particle is high.
In summary, dilval dry granulation of the invention and methane vapor reforming waste-heat recovery device structure be more Simply, production is implemented and uses operation all relatively simple, and combines its dilval dry granulation and methane vapor reforming Exhaust heat recovering method, while realizing to the granulation processing of liquid molten dilval, additionally it is possible to the waste heat of state dilval The required resource of methane-steam reforming is converted into by the multistage recovery of Physical joint chemical method, can help to improve To the recovery utilization rate of dilval residual heat resources, so as to effectively solve the granulation difficult processing for melting dilval in the prior art The problem of to meet stainless steel-making process requirement and its low residual heat resources recovery utilization rate, there is good commercial Application valency Value, can smelter popularization and application at home.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this Among the right of invention.

Claims (6)

1. a kind of dilval dry granulation and methane vapor reforming exhaust heat recovering method, it is characterised in that closed using ferronickel Golden dry granulation and methane vapor reforming waste-heat recovery device is implemented, the dilval dry granulation and methane vapor weight Whole waste-heat recovery device includes dry granulation device, reforming reaction bed, slag particle collector, water circulation evaporative condenser, water circulation heat Exchanger and methane separation device；The top of the dry granulation device is provided with dilval liquid entrance and gas vent, dry granulation Middle part in device, which is located at the position directly below of dilval liquid entrance, is provided with centrifugal granulation device, the bottom of dry granulation device with Connect connection at the top of the reforming reaction bed；The bottom of reforming reaction bed is provided with funnelform discharging opening, and reforming reaction The bottom of bed is provided with methane vapor air inlet close to the side wall of funnel-form discharging opening opening position；The slag particle collector face It is arranged at the unloading position below the discharging opening of reforming reaction bed, the water circulation evaporative condenser is arranged at slag particle collector Bottom and heat transfer can be carried out between slag particle collector, and the steam outlet of water circulation evaporative condenser be communicated to weight The methane vapor air inlet of whole reaction bed；Gas vent at the top of the dry granulation device by be disposed with air exhauster and The gas channel of deduster is communicated to the air-flow heat exchanger channels entrance of water circulation heat exchanger, by air exhauster certain driving air-flow from dry method Pelletizer flows to the air-flow heat exchanger channels of water circulation heat exchanger；The air-flow heat exchanger channels outlet of the water circulation heat exchanger connects The air inlet of methane separation device is passed to, and the recirculated water heat exchange steam (vapor) outlet of water circulation heat exchanger is communicated to reforming reaction bed Methane vapor air inlet；The methane separation device is used to isolate methane from the gas of entrance, and by isolated first Alkane and mixed tail gas are respectively from the outlet of its methane gas and mixed tail gas outlet discharge, and the methane gas of methane separation device exports Also it is communicated to the methane vapor air inlet of reforming reaction bed；Implement as follows：
1）Startup optimization dilval dry granulation and methane vapor reforming waste-heat recovery device, control in its dry granulation device Centrifugal granulation device rotary speed is 100 ~ 300rpm, and methane water is passed through into reforming reaction bed by its methane vapor air inlet Steam, driven by the air exhauster on gas channel in dilval dry granulation and methane vapor reforming waste-heat recovery device Airflow circulating；
2）By the dilval liquid entrance at the top of 1600 ~ 1650 DEG C of liquid molten dilval injection dry granulation device, flow into Centrifugal granulation device in dry granulation device, is thrown out of under the action of the centrifugal force, subsequently breaks up, is granulated into molten drop, and in-flight Dilval molten drop carry out heat convection in surface tension and with the air-flow that rises in dry granulation device, be frozen into 1000 ~ 1100 DEG C of dilval particle, falls into reforming reaction bed；
3）Dilval particle into reforming reaction bed is continuing whereabouts and the process of stop is piled up in reforming reaction bed In, the air-flow with rising in reforming reaction bed carries out heat convection again so that dilval particle temperature is down to 700 ~ 750 DEG C, then the discharging opening from reforming reaction bed bottom is emitted into slag particle collector and collected, and the nickel in slag particle collector Ferroalloy particles carry out heat exchange with water circulation evaporative condenser so that the recirculated water in water circulation evaporative condenser is by thermal evaporation Go out vapor and vapor is delivered to the methane vapor air inlet of reforming reaction bed by steam outlet, hence into weight Reforming reaction is participated in whole reaction bed and dry granulation device；
4）In step 2）~3）During, under the swabbing action of the air exhauster on gas channel, from methane vapor air inlet Methane vapor into reforming reaction bed is flowed upwardly into dry granulation device, and in reforming reaction bed and dry granulation device with Dilval particle directly contacts, and the oxidation of reforming reaction generation one occurs in the presence of heated and dilval is as catalyst Carbon and hydrogen, the mixed gas that then carbon monoxide, hydrogen and the complete methane vapor of unreacted are formed is from dry granulation device The gas vent inflow stream passage at top, enter in the air-flow heat exchanger channels of water circulation heat exchanger to enter after removing dust device dedusting Row heat exchange, the vapor in mixed gas are condensed separation in the air-flow heat exchanger channels of water circulation heat exchanger, simultaneously so that The recirculated water of water circulation heat exchanger is heated to be evaporated vapor and is delivered to vapor by recirculated water heat exchange steam (vapor) outlet The methane vapor air inlet of reforming reaction bed, hence into participating in reforming reaction in reforming reaction bed and dry granulation device；Go Except the mixed gas of vapor flows into methane separation device by the air-flow heat exchanger channels outlet of water circulation heat exchanger again so that Remove to export from methane gas after the methane in the mixed gas of vapor is separated in methane separation device and discharge, then pass through The methane vapor air inlet of reforming reaction bed, which comes back to, participates in reforming reaction in reforming reaction bed and dry granulation device, and goes Except the carbon monoxide in the mixed gas of vapor, hydrogen are arranged in methane separation device with being exported after methane separation from mixed tail gas Go out.
2. dilval dry granulation according to claim 1 and methane vapor reforming exhaust heat recovering method, its feature It is, the rotary drive motor and installation that the centrifugal granulation device in the dry granulation device is set straight up by drive shaft Porous centrifugation revolving cup in the drive shaft of rotary drive motor is formed；The porous centrifugation revolving cup has a horizontally disposed cup Bottom and the wall of cup extended straight up along bottom of a cup edge, it is porous to centrifuge the opening up of revolving cup and be right against dry granulation device Dilval liquid entrance, circumferentially arranged with from bottom of a cup opening position some rows is arranged into from bottom to top on the wall of cup of porous centrifugation revolving cup Through hole, the thickness of the wall of cup is 5 ~ 10mm, and the aperture of the through hole is 10 ~ 20mm, is arranged in the two neighboring of same a line Spacing between through hole edge is 5 ~ 10mm, be arranged in spacing between the two neighboring through hole edge of adjacent rows for 6 ~ 15mm, and the through hole per adjacent rows is staggered.
3. dilval dry granulation according to claim 1 and methane vapor reforming exhaust heat recovering method, its feature It is, the water circulation heat exchanger is additionally operable to collect vapor in its air-flow heat exchanger channels and cools down condensed condensed water and lead to Cross the discharge of condensed water delivery outlet, and the recirculated water collection of the condensation water output and water circulation evaporative condenser of water circulation heat exchanger Tank is connected.
4. dilval dry granulation according to claim 1 and methane vapor reforming exhaust heat recovering method, its feature It is, the reforming reaction bed is moving bed or fluid bed.
5. dilval dry granulation according to claim 1 and methane vapor reforming exhaust heat recovering method, its feature It is, the methane separation device uses stage variable pressure adsorption tower.
6. dilval dry granulation according to claim 1 and methane vapor reforming exhaust heat recovering method, its feature It is, plate feed is provided between the discharging opening and slag particle collector of the reforming reaction bed, to carry out reforming reaction bed Feeding of the discharging opening to slag particle collector.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329746A (en) * 1964-11-12 1967-07-04 Reynolds Metals Co Process for producing elongated, freeflowing metal particles
CN102826508A (en) * 2012-08-29 2012-12-19 中国科学院过程工程研究所 Method for preparing hydrogen by utilizing metallurgical slag waste heat to reform regenerative resources rich in methane
CN203683085U (en) * 2014-01-15 2014-07-02 中钢集团鞍山热能研究院有限公司 Device for preparing synthetic gas by performing methane reforming through blast furnace slag sensible heat
CN103924012A (en) * 2014-05-05 2014-07-16 重庆大学 Device and method for recovering residual heat by dry-process granulation of metallurgical slag

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329746A (en) * 1964-11-12 1967-07-04 Reynolds Metals Co Process for producing elongated, freeflowing metal particles
CN102826508A (en) * 2012-08-29 2012-12-19 中国科学院过程工程研究所 Method for preparing hydrogen by utilizing metallurgical slag waste heat to reform regenerative resources rich in methane
CN203683085U (en) * 2014-01-15 2014-07-02 中钢集团鞍山热能研究院有限公司 Device for preparing synthetic gas by performing methane reforming through blast furnace slag sensible heat
CN103924012A (en) * 2014-05-05 2014-07-16 重庆大学 Device and method for recovering residual heat by dry-process granulation of metallurgical slag

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Granulation of molten slag for heat recovery;Toshio MIZUOCHI etal.;《37th lntersociety Energy Conversion Engineering Conference (IECEC)》;20021231;第641-646页 *

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