CN108103253A - A kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system and method - Google Patents
A kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system and method Download PDFInfo
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- CN108103253A CN108103253A CN201810068107.8A CN201810068107A CN108103253A CN 108103253 A CN108103253 A CN 108103253A CN 201810068107 A CN201810068107 A CN 201810068107A CN 108103253 A CN108103253 A CN 108103253A
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- 239000002893 slag Substances 0.000 title claims abstract description 205
- 239000007788 liquid Substances 0.000 title claims abstract description 59
- 238000011084 recovery Methods 0.000 title claims abstract description 50
- 238000005054 agglomeration Methods 0.000 title claims abstract description 44
- 230000002776 aggregation Effects 0.000 title claims abstract description 44
- 239000004568 cement Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 235000003140 Panax quinquefolius Nutrition 0.000 claims abstract description 10
- 240000005373 Panax quinquefolius Species 0.000 claims abstract description 10
- 239000002826 coolant Substances 0.000 claims abstract description 5
- 239000002918 waste heat Substances 0.000 claims description 51
- 239000000428 dust Substances 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 26
- 239000011490 mineral wool Substances 0.000 claims description 16
- 238000002224 dissection Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 230000002411 adverse Effects 0.000 claims description 7
- 239000000112 cooling gas Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005469 granulation Methods 0.000 description 7
- 230000003179 granulation Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
- Y02P10/20—Recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The present invention is disclosed for a kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system and method.Including molten slag grid agglomeration system, reverse flow cooling system, residual neat recovering system and electric-control system；The molten slag grid agglomeration system is made of one or more independent molten slag grid agglomeration systems, including slag ditch, grid maker, contains slag machine, conveyer；The Sheng slag machine includes at least a conveyer belt, include a feed zone and a discharge zone on conveyer belt, slag ditch is provided with above feed zone, for by high-temperature liquid state slag directly on a moving belt, grid maker is provided with above the conveyer belt, for the hot slag transported on conveyer belt to be cut into block clinker；Conveyer is provided with below the discharge zone, for clinker to be transmitted to reverse flow cooling system；The counter-current cooler is vertical counter-current cooler or disc type cooler；The residual neat recovering system is used for the cooling medium heat recovery and utilization to being heated in cooler.
Description
Technical field
The present invention relates to a kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system and method, belong to metallurgical, ring
The technical fields such as guarantor, energy saving, building materials.
Background technology
The iron yield in China in 2016 has been more than 700,000,000 tons, and correspondingly the yield of blast furnace slag is also above 200,000,000 tons.Ordinary circumstance
Under, the temperature of blast furnace liquid slag is about 1350 DEG C ~ 1550 DEG C.Traditionally the processing method of blast furnace liquid slag has water quenching cooling
Grain slag and air natural cooling two major class of dry slag.Blast furnace dry slag is that blast furnace ironmaking process is in abnormal condition or water cooling is set
Blast furnace liquid slag is emitted in outdoor pit temporarily by the clinker of air Slow cooling when standby abnormal, the appearance of dry slag is main
Stone-like is presented.The utility value of blast furnace dry slag is relatively low, is mainly used for roadbed material.With rock mineral wool industry continuing at home
A kind of raw material of the blast furnace dry slag for rock wool production has been obtained the accreditation of rock wool manufacturing enterprise by development.The blast furnace of rock wool
Dry slag needs have suitable granularity, and general control is needed therefore by blast furnace dry slag through broken and sieve powder etc. in 50mm ~ 120mm
The granulation processing of link, resource utilization of the blast furnace dry slag after artificial granulation under normal circumstances is about 50%, therefore by blast furnace liquid
The granulation cost that state slag carries out is higher, and the effective rate of utilization of resource is relatively low, while because dry slag is only used as blast furnace cinder
Accident treatment mode, and dry slag disposal process can also generate the problem of environmental pollutions such as apparent exhaust gas.Blast furnace granulated slag is then mesh
Preceding blast furnace liquid slag is quickly cooled down and the most ripe technology of granulated processed, and the blast furnace slag after water cooled granulation has been used as water
Mud clinker admixture is widely applied, but added value is relatively low, and the unrecovered utilization of sensible heat of blast furnace liquid slag.Although mesh
Preceding many researchers have begun to develop new utilization technology to the waste heat of grain slag cooling water, but cause because cooling water temperature is too low
The problems such as recovery and utilization technology hardly possible is broken through.
Although domestic and international research institution has begun to grind the processing of the slags such as revolving cup, runner and heat recovery technology
Study carefully, but because in the granulating slag melts technology such as revolving cup, runner key equipment be granulated and do not have operability, and Granulation Equipments in high temperature and
Adaptability under at a high speed is poor.Slag granules after air cooling are small, even staple fiber shape, while are granulated through revolving cup or runner
Treated, and clinker glass rate drops to 50% ~ 70%, so as to can cause granulation after clinker be difficult meet cement admixture and
As the intensity requirement of rock wool raw material, finally make the technology that can not still realize industrialized development.
The content of the invention
In view of problem present in above-mentioned and/or existing granulating slag melts and heat recovery, it is proposed that the present invention.
It is therefore an object of the present invention to solve the deficiencies in the prior art, a kind of grid agglomeration of blast furnace liquid slag is provided
With cement sensible heat recovery system and method, innovation is to carry out grid agglomeration and Exposure degree using closed system, substantially will not
Generation environment pollutes, while is exchanged heat by slowly reverse-flow conduction, can realize the maximization of heat exchanger effectiveness.
It, can not only be by high temperature melting the purpose of the present invention is obtaining blast furnace liquid slag grid agglomeration and Exposure degree technology
Slag is processed into the clinker for the raw slag requirement that can meet rock wool manufacturing enterprise using grid, and can be to high temperature clinker
Sensible heat is recycled.
In order to solve the above technical problem, the present invention provides following technical solutions：
A kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system, it is cold including molten slag grid agglomeration system, adverse current
But system, residual neat recovering system and electric-control system；
The molten slag grid agglomeration system is made of one or more independent molten slag grid agglomeration systems, including molten
Slag runner, grid maker contain slag machine, conveyer；The Sheng slag machine includes at least a conveyer belt, includes a feed zone and one on conveyer belt
Discharge zone is provided with slag ditch above feed zone, for by high-temperature liquid state slag directly on a moving belt, on the conveyer belt
Side is provided with grid maker, for the hot slag transported on conveyer belt to be cut into block clinker；It is provided with below the discharge zone
Conveyer, for clinker to be transmitted to reverse flow cooling system；
The reverse flow cooling system includes at least a counter-current cooler, a feeding warehouse and a discharge port, and feeding warehouse is arranged on adverse current
Above cooler, discharge port is arranged on counter-current cooler bottom；
The counter-current cooler is vertical counter-current cooler or disc type cooler；
The residual neat recovering system is used for the cooling medium heat recovery and utilization to being heated in cooler.
As a preferred embodiment of the present invention, wherein：The grid maker is chain type transmission structure, is provided on chain
At least one grid, the grid maker can in the same direction be operated with containing slag machine, and the grid maker is continuously run, and slag machine will be contained by grid
On molten slag cut into the clinker of same size, and after tentatively cooling down clinker is made to shape completely.
As a preferred embodiment of the present invention, wherein：The size of the clinker can be adjusted according to user demand
The distance of adjacent grid realizes that general control is in 50mm ~ 120mm；Contain slag machine the speed of service also can according to throughput requirements into
Row is adjusted.
As a preferred embodiment of the present invention, wherein：The temperature of the high-temperature liquid state slag 1350 DEG C ~ 1550 DEG C it
Between, it is directly poured on the conveyer belt for containing slag machine by slag ditch, it is communicated to be continuously run with top under the dissection of grid maker,
Molten slag is separated into the clinker of same size, and after tentatively cooling down clinker is made to shape completely, high temperature clinker is containing slag
It is slowly cooled on machine to 700 DEG C ~ 900 DEG C, is then discharged to from the afterbody for containing slag machine on conveyer.
As a preferred embodiment of the present invention, wherein：The counter-current cooler is vertical counter-current cooler, from top to bottom
Include top feed bin, intermediate bunker, cooler, separated between the top feed bin and intermediate bunker by upper baffle plate, institute
It states and is separated between intermediate bunker and cooler by lower partition, partition plate controls folding by stop valve；Cooler bottom is provided with
Air Heater is uniformly fed into and through after entire cooler for that will cool down medium from lower part again by cooling derived from top
Journey.
The waste heat recovery system includes cyclone dust collectors, waste heat boiler, air-introduced machine, and one end of the cyclone dust collectors is with erecting
Formula counter-current cooler connects, and the other end is connected with waste heat boiler, and the exhaust outlet of waste heat boiler will be connected to be connected with air-introduced machine, finally
Circulated air is sent into Air Heater by air-introduced machine；Hot gas caused by clinker cooling is arranged from top in the vertical counter-current cooler
It is purified in going out into cyclone dust collectors, then enters back into waste heat boiler and carry out energy recovery, the low temperature gas discharged from waste heat boiler
Body enters after air-introduced machine is sent into Air Heater in vertical counter-current cooler again to be recycled.
As a preferred embodiment of the present invention, wherein：The counter-current cooler is disc type cooler, and bottom is provided with
Wind device, disc type cooler is rotates in a circumferential direction, and using bottom air inlet, provides different cooling air quantities in circumferential direction according to clinker temperature,
The dust excluding hood of its upper part configuration simultaneously carries out centralized collection and Exposure degree.
The waste heat recovery system includes cyclone dust collectors, waste heat boiler, air-introduced machine, and one end of the cyclone dust collectors passes through
Dust excluding hood is connected with disc type cooler, and the other end is connected with waste heat boiler, and the exhaust outlet of waste heat boiler is connected with air-introduced machine, air inducing
Machine is connected with Air Heater；Hot gas caused by cooling down clinker in the disc type cooler is discharged into cyclone dust collectors from top
In purified, then enter back into waste heat boiler carry out energy recovery, from waste heat boiler outlet discharge cryogenic gas through drawing
Wind turbine is sent into disc type cooler by Air Heater recycles again.
Grid agglomeration and sensible heat recovery method the present invention also provides a kind of blast furnace liquid slag, comprise the following steps：
1）1350 DEG C ~ 1550 DEG C of blast furnace liquid slag is sent by slag runner on the conveyer belt for containing slag machine, slag machine is contained and is in continuous
Operating status in；
2）The blast furnace liquid slag on Sheng slag machine conveyer belt has been layered on by being divided under the grid maker dissection of its upper part
Clinker of uniform size；
3）Clinker moves forwards on slag machine is contained, and is synchronously tentatively cooled and shaped；
4）700 DEG C ~ 900 DEG C of clinker has been cooled in conveyer belt discharge zone to be discharged on transporter, has then been sent to by transporter
It is cooled down in counter-current cooler；
5）After the clinker in the feed bin of top reaches a certain amount of, opening stop valve makes intermediate bunker be in negative pressure state；
6）Open upper baffle plate fallen on by clinker in intermediate bunker, be then shut off upper baffle plate and stop valve, then open lower part every
Plate is fitted by the clinker in intermediate bunker in vertical counter-current cooler；
7）The Air Heater of cooling gas from vertical counter-current cooler bottom enters and cools down clinker, is cooled to≤200 DEG C of slag
Block is discharged from the discharger of vertical counter-current cooler bottom, and rock wool factory is sent to be used as raw material.
8）Hot gas after being heated in vertical counter-current cooler by clinker from the top of vertical counter-current cooler discharge into
Enter in cyclone dust collectors and purified, then enter back into waste heat boiler and carry out energy recovery；
9）The about 150 DEG C of cryogenic gases discharged from waste heat boiler are sent into vertical counter-current cooler through air-introduced machine by Air Heater again
It recycles.
Grid agglomeration and sensible heat recovery method the present invention also provides another blast furnace liquid slag, comprise the following steps：
1）1350 DEG C ~ 1550 DEG C of blast furnace liquid slag is sent by slag runner on the conveyer belt for containing slag machine, slag machine is contained and is in continuous
Operating status in；
2）The blast furnace liquid slag on Sheng slag machine conveyer belt has been layered on by being divided under the grid maker dissection of its upper part
Clinker of uniform size；
3）Clinker moves forwards on slag machine is contained, and is synchronously tentatively cooled and shaped；
4）700 DEG C ~ 900 DEG C of clinker has been cooled in conveyer belt discharge zone to be discharged on transporter, has then been sent to by transporter
Disc type cooler is cooled down；
5）Disc type cooler at the uniform velocity rotates；
7）The Air Heater of cooling gas from disc type cooler bottom enters and cools down clinker, is cooled to≤200 DEG C of clinker warp
The discharger of disc type cooler afterbody takes out, and rock wool factory is sent to be used as raw material；
8）Hot gas after clinker heats is discharged into cyclone dust collectors from the upper-part centralized of disc type cooler（11）Middle progress
Then purification enters back into waste heat boiler and carries out energy recovery；
9）It is sent into disc type cooler and cycled by Air Heater again through air-introduced machine from about 150 DEG C of cryogenic gases that waste heat boiler is discharged
It uses.
Advantageous effect possessed by the present invention：
1）It can realize the high efficiency recycling of slag, the high added value of clinker deep processed product is substantially improved；
2）Grid agglomeration and Exposure degree are carried out in closed system, the sensible heat of slag can be realized on the basis of free from environmental pollution
Recycling and utilization；
3）Both can give production integrate fire prevention, sound-absorbing and thermal insulation rock wool enterprise offer qualification raw slag, improve across
For the resource recycling of industry using level, the complicated granulation process such as slag, broken and sieve powder can be allowed to dry to avoid existing use by having
High pollution and high cost of disposal.
This technology difficult point mainly includes：
1）Blast furnace liquid slag is equably poured into and is contained in slag device, makes the clinker after grid agglomeration uniform in size；
2）Grid maker must be consistent with containing the speed of service of slag machine, and otherwise the target of grid agglomeration can not achieve；
3）Grid maker and Sheng slag machine are constantly in circular flow, and the grid of mould and grid maker for containing slag machine needs quickly
Cooling, and need to carry out spraying releasing agent processing before use, difficulty of working continuously under hot environment is larger；
4）The speed of service for containing slag machine depends not only on the size of yield, and is containing the temperature of slag drive end unit about with clinker
700 DEG C ~ 900 DEG C related, i.e., cooling velocity is unsuitable too fast, prevents that molding clinker causes clinker intensity after forming glass phase
Difference, so as to cannot be used for rock wool production；
5）The transport of about 700 DEG C ~ 900 DEG C of clinker needs dedicated transporting equipment, and needs by Wear-resistant Treatment, therefore transporter
Material selection difficulty it is larger；
6）Hydronic gas needs to carry out cyclone dust removal purification, can so reduce dust to waste heat boiler and air-introduced machine
Abrasion, therefore the encapsulation process of cement sensible heat recovery system is very crucial and one of technological difficulties.
The main innovation point of this technology has：
1）Blast furnace liquid slag is once used into grid forming processes, to meet characteristic requirements of the rock wool production to raw materials of slag,
It may insure that molten slag shaping efficiency is very high, basically reach more than 95%；
2）Clinker after one-step forming at the beginning of blast furnace liquid slag is still in the condition of high temperature, using air-tight manner to the sensible heat of high temperature clinker
It is recycled, can realize the Exposure degree technological break-through of slag；
3）Blast furnace liquid slag using grid method agglomeration and is taken into closed system Exposure degree, and meets clinker after cooling
The needs of rock wool production can fully achieve the technological break-through of the matter of blast furnace liquid slag and the economic benefits and social benefits recycling of energy；
4）Novelty is realized, novel technique is disposed to slag, laid the foundation for the new high value added utilization of blast furnace slag；
5）Can blast furnace liquid slag be handled with continuous batch, avoid the waste of environmental pollution, the energy and resource.
The advantages of this technology, mainly has：
1）It is realized using simple and practical equipment and the substance and the energy of blast furnace liquid slag is recycled simultaneously, and the resource profit of clinker
It is very high with efficiency, avoid the waste of resource and the energy；
2）Closed heat recovery system will be taken, avoid the energy waste of production process and the secondary pollution of generation environment；
3）Can solve conventional dry Slag treatment needs to occupy special pit and causes treating capacity deficiency etc. because pit capacity is limited
Problem.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing work simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these attached drawings
Its attached drawing.Wherein：
The grid agglomeration of Fig. 1 blast furnace liquid slags and the flow diagram of cement sensible heat recovery system（Vertical cooling）
The grid agglomeration of Fig. 2 blast furnace liquid slags and the flow diagram of cement sensible heat recovery system（Disc type cools down）
In figure：1- slag ditch 2- grid makers 3- contains slag machine 4- clinker 5- conveyer 6- upper baffle plate 7- top feed bin 8-
The vertical counter-current cooler 14- of intermediate bunker 9- lower partition 10- stop valve 11- cyclone dust collectors 12- waste heat boilers 13-
Air Heater 15- air-introduced machine 16- disc type cooler 17- discharge ports.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to specific embodiment pair
The specific embodiment of the present invention is described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
Implemented using other different from other manner described here, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is from the limitation of following public specific embodiment.
Embodiment 1
Such as Fig. 1：A kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system, including molten slag grid agglomeration system,
Reverse flow cooling system, residual neat recovering system and electric-control system；
The molten slag grid agglomeration system is made of one or more independent molten slag grid agglomeration systems, including molten
Slag runner 1, grid maker 2 contain slag machine 3, conveyer 5；The Sheng slag machine includes at least a conveyer belt, includes a feed zone on conveyer belt
With a discharge zone, be provided with slag ditch 1 above feed zone, for by high-temperature liquid state slag directly on a moving belt, the biography
Band top is sent to be provided with grid maker 2, for the hot slag transported on conveyer belt to be cut into block clinker 4；Under the discharge zone
Side is provided with conveyer 5, for clinker to be transmitted to reverse flow cooling system；
The reverse flow cooling system includes at least a counter-current cooler, a feeding warehouse and a discharge port, and feeding warehouse is arranged on adverse current
Above cooler, discharge port is arranged on counter-current cooler bottom；
The residual neat recovering system is used for the cooling medium heat recovery and utilization to being heated in cooler.
:The grid maker is chain type transmission structure, is provided at least one grid on chain, the grid maker can be with Sheng
Slag machine operates in the same direction, and the grid maker is continuously run, and the molten slag contained on slag machine is cut into same size by grid
Clinker, and after tentatively cooling down clinker is made to shape completely.
The size of the clinker 4 can adjust the distance of adjacent grid to realize according to user demand, general control
In 50mm ~ 120mm；Containing the speed of service of slag machine 3 can also be adjusted according to throughput requirements.
The temperature of the high-temperature liquid state slag is directly poured between 1350 DEG C ~ 1550 DEG C, by slag ditch and contains slag machine 3
It is communicated to be continuously run with top under the dissection of grid maker on conveyer belt, molten slag is separated into the slag of same size
Block, and after tentatively cooling down clinker is made to shape completely, high temperature clinker is slowly cooled on slag machine is contained to 700 DEG C ~ 900 DEG C,
Then it is discharged to from the afterbody for containing slag machine 3 on conveyer 5.
The counter-current cooler is vertical counter-current cooler, includes top feed bin 7, intermediate bunker 8, cooling from top to bottom
Device 13 is separated between the top feed bin and intermediate bunker by upper baffle plate, is led between the intermediate bunker and cooler 13
It crosses lower partition to separate, partition plate controls folding by stop valve 10；Cooler bottom is provided with Air Heater 14, for that will cool down medium
It is uniformly fed into and through from lower part after entire cooler again by the process that cools derived from top.
The waste heat recovery system includes cyclone dust collectors 11, waste heat boiler 12, air-introduced machine 15, the cyclone dust collectors 11
One end is connected with vertical counter-current cooler 13, and the other end is connected with waste heat boiler 12, the exhaust outlet of waste heat boiler 12 will connect with
Air-introduced machine 15 is connected, and circulated air is sent into Air Heater 14 by last air-introduced machine 15；Clinker is cooled down in the vertical counter-current cooler
Generated hot gas is discharged into cyclone dust collectors 11 from top and purifies, and then enters back into waste heat boiler 12 and carries out the energy time
It receives, the cryogenic gas discharged from waste heat boiler 12 enters after air-introduced machine 15 is sent into Air Heater 14 in vertical counter-current cooler 13 again
It is recycled.
A kind of grid agglomeration of blast furnace liquid slag and sensible heat recovery method, comprise the following steps：
1）1350 DEG C ~ 1550 DEG C of blast furnace liquid slag is sent by slag runner 1 on the conveyer belt for containing slag machine 3, contains slag machine 3 in company
In continuous operating status；
2）The blast furnace liquid slag on 3 conveyer belt of Sheng slag machine has been layered on by being separated under 2 dissection of grid maker of its upper part
Into clinker 4 of uniform size；
3）Clinker moves forwards on slag machine is contained, and is synchronously tentatively cooled and shaped；
4）700 DEG C ~ 900 DEG C of clinker has been cooled in conveyer belt discharge zone to be discharged on transporter 5, has then been sent to by transporter
It is cooled down in counter-current cooler；
5）After the clinker in top feed bin 7 reaches a certain amount of, opening stop valve 10 makes intermediate bunker 8 be in negative pressure state；
6）Opening upper baffle plate 6 allows clinker to fall in intermediate bunker 8, is then shut off upper baffle plate and stop valve 10, then opens down
The clinker that portion's partition plate 9 allows in intermediate bunker is fitted into vertical counter-current cooler 13；
7）The Air Heater 14 of cooling gas from vertical 13 bottom of counter-current cooler enters and cools down clinker, is cooled to≤200 DEG C
Clinker discharged from the discharger of vertical 13 bottom of counter-current cooler, rock wool factory is sent to be used as raw material；
8）Hot gas after being heated in vertical counter-current cooler 13 by clinker from the top of vertical counter-current cooler 13 discharge into
Enter and purified in cyclone dust collectors 11, then enter back into waste heat boiler 12 and carry out energy recovery；
9）It is cold that the about 150 DEG C of cryogenic gases discharged from waste heat boiler 12 through air-introduced machine 15 are sent into vertical adverse current by Air Heater 14 again
But recycled in device 13.
Embodiment 2
A kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system, it is cold including molten slag grid agglomeration system, adverse current
But system, residual neat recovering system and electric-control system；
The molten slag grid agglomeration system is made of one or more independent molten slag grid agglomeration systems, including molten
Slag runner 1, grid maker 2 contain slag machine 3, conveyer 5；The Sheng slag machine includes at least a conveyer belt, includes a feed zone on conveyer belt
With a discharge zone, be provided with slag ditch 1 above feed zone, for by high-temperature liquid state slag directly on a moving belt, the biography
Band top is sent to be provided with grid maker 2, for the hot slag transported on conveyer belt to be cut into block clinker 4；Under the discharge zone
Side is provided with conveyer 5, for clinker to be transmitted to reverse flow cooling system；
The reverse flow cooling system includes at least a counter-current cooler, a feeding warehouse and a discharge port, and feeding warehouse is arranged on adverse current
Above cooler, discharge port is arranged on counter-current cooler bottom；
The residual neat recovering system is used for the cooling medium heat recovery and utilization to being heated in cooler.
The grid maker is chain type transmission structure, is provided at least one grid on chain, the grid maker can be with Sheng
Slag machine operates in the same direction, and the grid maker is continuously run, and the molten slag contained on slag machine is cut into same size by grid
Clinker, and after tentatively cooling down clinker is made to shape completely.
The size of the clinker 4 can adjust the distance of adjacent grid to realize according to user demand, general control
In 50mm ~ 120mm；Containing the speed of service of slag machine 3 can also be adjusted according to throughput requirements.
The temperature of the high-temperature liquid state slag is directly poured between 1350 DEG C ~ 1550 DEG C, by slag ditch and contains slag machine 3
It is communicated to be continuously run with top under the dissection of grid maker on conveyer belt, molten slag is separated into the slag of same size
Block, and after tentatively cooling down clinker is made to shape completely, high temperature clinker is slowly cooled on slag machine is contained to 700 DEG C ~ 900 DEG C,
Then it is discharged to from the afterbody for containing slag machine 3 on conveyer 5.
The counter-current cooler is disc type cooler, and bottom is provided with Air Heater, and disc type cooler uses to rotate in a circumferential direction
Bottom air inlet provides different cooling air quantities in circumferential direction according to clinker temperature, while its upper part configuration dust excluding hood carries out concentration receipts
Collection and Exposure degree.
The waste heat recovery system includes cyclone dust collectors 11, waste heat boiler 12, air-introduced machine 15, the cyclone dust collectors 11
One end is connected by dust excluding hood with disc type cooler 16, and the other end is connected with waste heat boiler 12, the exhaust outlet of waste heat boiler 12 with
Air-introduced machine 15 connects, and air-introduced machine 15 is connected with Air Heater 14；Hot gas caused by clinker is cooled down in the disc type cooler 16
It is discharged into cyclone dust collectors 11 and is purified from top, then enter back into waste heat boiler 12 and carry out energy recovery, from waste heat
The cryogenic gas of 12 outlet of boiler discharge is sent by Air Heater in disc type cooler again through air-introduced machine 15 to be recycled.
A kind of grid agglomeration of blast furnace liquid slag and sensible heat recovery method, comprise the following steps：
1）1350 DEG C ~ 1550 DEG C of blast furnace liquid slag is sent by slag runner 1 on the conveyer belt for containing slag machine 3, slag machine is contained and is in company
In continuous operating status；
2）The blast furnace liquid slag on 3 conveyer belt of Sheng slag machine has been layered on by being separated under 2 dissection of grid maker of its upper part
Into clinker 4 of uniform size；
3）Clinker moves forwards on slag machine is contained, and is synchronously tentatively cooled and shaped；
4）700 DEG C ~ 900 DEG C of clinker has been cooled in conveyer belt discharge zone to be discharged on transporter 5, has then been sent by transporter 5
It is cooled down to disc type cooler 16；
5）Disc type cooler 16 at the uniform velocity rotates；
7）The Air Heater of cooling gas from 16 bottom of disc type cooler enters and cools down clinker, is cooled to≤200 DEG C of clinker
Discharger through 16 afterbody of disc type cooler takes out, and rock wool factory is sent to be used as raw material；
8）Hot gas after clinker heats, which is discharged into from the upper-part centralized of disc type cooler 16 in cyclone dust collectors 11, to carry out
Then purification enters back into waste heat boiler 12 and carries out energy recovery；
9）The about 150 DEG C of cryogenic gases discharged from waste heat boiler 12 are sent into disc type cooler by Air Heater 14 again through air-introduced machine 15
It is recycled in 16.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to preferable
The present invention is described in detail in embodiment, it will be understood by those of ordinary skill in the art that, it can be to the technology of the present invention
Scheme is modified or replaced equivalently, and without departing from the spirit and scope of technical solution of the present invention, should all be covered in this hair
Among bright right.
Claims (10)
1. grid agglomeration and the cement sensible heat recovery system of a kind of blast furnace liquid slag, which is characterized in that made including molten slag grid
Block system, reverse flow cooling system, residual neat recovering system and electric-control system；
The molten slag grid agglomeration system is made of one or more independent molten slag grid agglomeration systems, including molten
Slag runner（1）, grid maker（2）, contain slag machine（3）, conveyer（5）；The Sheng slag machine includes at least a conveyer belt, includes on conveyer belt
One feed zone and a discharge zone are provided with slag ditch above feed zone, for by high-temperature liquid state slag directly on a moving belt,
Grid maker is provided with above the conveyer belt, for the hot slag transported on conveyer belt to be cut into block clinker（4）；It is described go out
Material is provided with conveyer below area, for clinker to be transmitted to reverse flow cooling system；
The reverse flow cooling system includes at least a counter-current cooler, a feeding warehouse and a discharge port, and feeding warehouse is arranged on adverse current
Above cooler, discharge port is arranged on counter-current cooler bottom；
The counter-current cooler is vertical counter-current cooler or disc type cooler；
The residual neat recovering system is used for the cooling medium heat recovery and utilization to being heated in cooler.
2. grid agglomeration and the cement sensible heat recovery system of blast furnace liquid slag according to claim 1, which is characterized in that described
Grid maker is chain type transmission structure, and at least one grid is provided on chain, and the grid maker can in the same direction be operated with containing slag machine,
The grid maker is continuously run, and the molten slag contained on slag machine is cut into the clinker of same size by grid, and by just
After step cooling clinker is made to shape completely.
3. grid agglomeration and the cement sensible heat recovery system of blast furnace liquid slag according to claim 2, which is characterized in that described
Clinker（4）Size the distance of adjacent grid can be adjusted according to user demand realize, general control 50mm ~
120mm；Contain slag machine（3）The speed of service can be also adjusted according to throughput requirements.
4. grid agglomeration and the cement sensible heat recovery system of the blast furnace liquid slag according to claim 1,2,3, which is characterized in that
The temperature of the high-temperature liquid state slag is directly poured between 1350 DEG C ~ 1550 DEG C, by slag ditch and contains slag machine（3）Conveyer belt
On, it is communicated to be continuously run with top under the dissection of grid maker, molten slag is separated into the clinker of same size, and is passed through
After crossing preliminary cooling clinker is made to shape completely, high temperature clinker is slowly cooled on slag machine is contained to 700 DEG C ~ 900 DEG C, then from Sheng
Slag machine（3）Afterbody be discharged to conveyer（5）On.
5. grid agglomeration and the cement sensible heat recovery system of blast furnace liquid slag according to claim 1, which is characterized in that described
Counter-current cooler is vertical counter-current cooler, includes top feed bin from top to bottom（7）, intermediate bunker（8）, cooler（13）,
It is separated between the top feed bin and intermediate bunker by upper baffle plate, the intermediate bunker and cooler（13）Between under
Portion's partition plate separates, and partition plate is by stop valve（10）Control folding；Cooler bottom is provided with Air Heater（14）, for medium will to be cooled down
It is uniformly fed into and through from lower part after entire cooler again by the process that cools derived from top.
6. grid agglomeration and the cement sensible heat recovery system of blast furnace liquid slag according to claim 1, which is characterized in that described
Counter-current cooler is disc type cooler, and bottom is provided with Air Heater, and disc type cooler is rotates in a circumferential direction, using bottom air inlet, week
Different cooling air quantities is provided according to clinker temperature upwards, while its upper part configuration dust excluding hood carries out centralized collection and returned with sensible heat
It receives.
7. grid agglomeration and the cement sensible heat recovery system of blast furnace liquid slag according to claim 5, which is characterized in that described
Waste heat recovery system includes cyclone dust collectors（11）, waste heat boiler（12）, air-introduced machine（15）, the cyclone dust collectors（11）One end
With vertical counter-current cooler（13）Connection, the other end and waste heat boiler（12）Connection, waste heat boiler（12）Exhaust outlet will connect
With air-introduced machine（15）It is connected, last air-introduced machine（15）Circulated air is sent into Air Heater（14）；It is right in the vertical counter-current cooler
Hot gas caused by clinker cooling is discharged into cyclone dust collectors from top（11）Middle purification, then enters back into waste heat boiler
（12）Energy recovery is carried out, from waste heat boiler（12）The cryogenic gas of discharge is again through air-introduced machine（15）It is sent into Air Heater（14）It is laggard
Enter vertical counter-current cooler（13）In recycled.
8. grid agglomeration and the cement sensible heat recovery system of blast furnace liquid slag according to claim 6, which is characterized in that described
Waste heat recovery system includes cyclone dust collectors（11）, waste heat boiler（12）, air-introduced machine（15）, the cyclone dust collectors（11）One end
Pass through dust excluding hood and disc type cooler（16）Connection, the other end and waste heat boiler（12）Connection, waste heat boiler（12）Exhaust outlet
With air-introduced machine（15）Connection, air-introduced machine（15）With Air Heater（14）Connection；The disc type cooler（16）Middle cooling clinker is produced
Raw hot gas is discharged into cyclone dust collectors from top（11）In purified, then enter back into waste heat boiler（12）Carry out energy
Source is recycled, from waste heat boiler（12）The cryogenic gas of outlet discharge is through air-introduced machine（15）Disc type cooling is sent by Air Heater again
It is recycled in device.
9. grid agglomeration and the sensible heat recovery method of a kind of blast furnace liquid slag described in claim 7, which is characterized in that including
Following steps：
1）By 1350 DEG C ~ 1550 DEG C of blast furnace liquid slag by slag runner（1）It is sent into and contains slag machine（3）Conveyer belt on, contain slag machine（3）
In continuous operating status；
2）It has been layered on and has contained slag machine（3）Blast furnace liquid slag on conveyer belt by its upper part grid maker（2）Quilt under dissection
It is separated into clinker of uniform size（4）；
3）Clinker moves forwards on slag machine is contained, and is synchronously tentatively cooled and shaped；
4）700 DEG C ~ 900 DEG C of clinker has been cooled in conveyer belt discharge zone and has been discharged to transporter（5）On, then sent by transporter
It is cooled down into counter-current cooler；
5）When top feed bin（7）In clinker reach a certain amount of after, open stop valve（10）Make intermediate bunker（8）In negative pressure shape
State；
6）Open upper baffle plate（6）Clinker is allowed to fall on intermediate bunker（8）In, it is then shut off upper baffle plate and stop valve（10）, then
Open lower partition（9）The clinker allowed in intermediate bunker is packed into vertical counter-current cooler（13）In；
7）Cooling gas is from vertical counter-current cooler（13）The Air Heater of bottom（14）Into and cool down clinker, be cooled to≤
200 DEG C of clinker is from vertical counter-current cooler（13）The discharger discharge of bottom, send rock wool factory to be used as raw material；
8）Through vertical counter-current cooler（13）It is middle heated by clinker after hot gas from vertical counter-current cooler（13）Top row
Go out to enter cyclone dust collectors（11）In purified, then enter back into waste heat boiler（12）Carry out energy recovery；
9）From waste heat boiler（12）About 150 DEG C of cryogenic gases of discharge are through air-introduced machine（15）Again by Air Heater（14）It is sent into vertical
Counter-current cooler（13）Middle recycling.
10. grid agglomeration and the sensible heat recovery method of another blast furnace liquid slag described in claim 8, which is characterized in that
Comprise the following steps：
1）By 1350 DEG C ~ 1550 DEG C of blast furnace liquid slag by slag runner（1）It is sent into and contains slag machine（3）Conveyer belt on, contain slag machine at
In continuous operating status；
2）It has been layered on and has contained slag machine（3）Blast furnace liquid slag on conveyer belt by its upper part grid maker（2）Quilt under dissection
It is separated into clinker of uniform size（4）；
3）Clinker moves forwards on slag machine is contained, and is synchronously tentatively cooled and shaped；
4）700 DEG C ~ 900 DEG C of clinker has been cooled in conveyer belt discharge zone and has been discharged to transporter（5）On, then by transporter
（5）It is sent to disc type cooler（16）It is cooled down；
5）Disc type cooler（16）At the uniform velocity rotate；
7）Cooling gas is from disc type cooler（16）The Air Heater of bottom enters and cools down clinker, is cooled to≤200 DEG C of slag
Block is through disc type cooler（16）The discharger of afterbody takes out, and rock wool factory is sent to be used as raw material；
8）Hot gas after clinker heats is from disc type cooler（16）Upper-part centralized in be discharged into cyclone dust collectors（11）In
It is purified, then enters back into waste heat boiler（12）Carry out energy recovery；
9）From waste heat boiler（12）About 150 DEG C of cryogenic gases of discharge are through air-introduced machine（15）Again by Air Heater（14）It is sent into disc type
Cooler（16）Middle recycling.
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