CN106500079A

CN106500079A - Superheated steam circulation method residues processing technique

Info

Publication number: CN106500079A
Application number: CN201510557648.3A
Authority: CN
Inventors: 姜学仕; 姜宏泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-06
Filing date: 2015-09-06
Publication date: 2017-03-15

Abstract

The present invention provides a kind of new blast furnace Slag treatment, slag heat energy recovering method and device.The method slag adds water-spraying control using mechanical granulation, cools down slag by cyclical superheating steam, i.e., take away slag heat mainly by superheated steam.The technique is placed on Slag treatment and slag heat transfer process in hermetic container and carries out, water spray produces the superheated steam recirculation steam, the characteristics of make use of superheated steam specific heat big cools down slag by superheated steam, dedusting is carried out using the uncondensable feature of superheated steam, heat exchange, the process boilers adopt incomplete heat exchange mode, i.e. steam delivery outlet after boiler heat exchange is remained, recirculation is realized by blower fan using superheated steam uncondensable feature, and then achieve the sealing and circulating of Slag treatment process, heat exchange and generation high-temperature steam purpose, achieve the output of high-quality clean steam to generate electricity, improve steam value and then improve heat utilization efficiency, the technique meets Slag treatment while realizing that the High Efficiency Thermal of metallurgical slag is utilized, water saving, energy-conservation, environmental protection, there is practical extending application value.

Description

Superheated steam circulation method residues processing technique

Technical field

The invention belongs to metallurgical slag processing procedure, secondary energy sources recovery technology, and in particular to a kind of Metallurgical liquid-state slag Process technique and the device of heat energy recycle.

Background technology

Substantial amounts of metallurgical slag is produced in ironmaking, steelmaking process, substantial amounts of sensible heat in these slags, is carried.Refined according to China Iron blast furnace, steelmaking converter produce reality statistics often refine the blast furnace slag that one ton of ferrum about produces 280-400kg/t, often refine one ton of steel and about produce The slag of raw 120-150kg/t, contains substantial amounts of sensible heat in these slags.Per kilogram blast furnace slag enthalpy is introduced about according to data 1797.4KJ/kg, per kilogram slag enthalpy are about 2000KJ/kg.If standard coal presses 29260KJ/kg calculating, one is often refined The sensible heat of the slag that the ton pig iron is produced is approximately equivalent to 20kg standard coals, then the sensible heat for often refining the slag that one ton of steel is produced is approximately equivalent to 8kg marks Quasi- coal, according to coke and marks 0.9714 kilogram of coal conversion factor, then the coke equivalent to 20.5kg and 8.2kg.

Calculated by 6.8 hundred million tons according to statistical data China's crude steel yield in 2013, then every year because blast furnace slag takes away heat equivalent to 1360 Ten thousand tons of standard coals, slag take away heat equivalent to 5,440,000 tons of standard coals, equivalent to 14,000,000 tons and 5,600,000 tons of coke, such as often Seat coke oven annual production is by 1,000,000 tons of calculating, annual production of the heat that China is taken away because of slag every year equivalent to 19.6 coke ovens, coke Price is calculated equivalent to 235.2 hundred million yuan by 1200 yuan/t.

In addition China also produces other industrial slags substantial amounts of every year.Ten thousand tons of ferro-alloy cinders of 5000-8000 are produced about as annual, The phosphoric acid slag of 30000000 tons/t, etc..

From the point of view of the whole nation, metallurgical slag heat utilization rate is extremely low at present, and so-called utilization is exactly to be entered with the pulp water of blast furnace heat in Northern Enterprises winter Row warming, due to by being limited for the condition such as thermal region, flow, and pulp water contain substantial amounts of alkaline matter to pump and The factors such as corrosive pipeline, slag heat utilization rate are extremely low.And spring, summer, three seasons of autumn can not use, the pulp water of big calorimetric without Method is excluded, and affects production, working environment.Therefore the Exposure degree of slag is worth conscientiously studying using being highly important problem.

The research of slag sensible heat utilization is many both at home and abroad at present, and method is also a lot.In hermetic container using water vapour It is that I is proposed both at home and abroad first that change and superheating process take away the hot theory of slag, although monopolistic market also has many being similar to be somebody's turn to do at present Principle, the patent of method, but be all a kind of abuse.Application number 200710157873 has applied for one kind《Blast furnace Slag treatment and Slag heat energy utilization method and implementation》；Application number 200810229364 has applied for one kind《Steam circulation method heat energy of blast furnace profit With and Slag treatment implementation》, two patent its cores be all using water vaporization and superheating process cool down slag, by hermetic container Water quenching produced steam, except that two kinds of method technical processs, devices are variant, the vapor quality of generation is different.

, using brand-new heat transfer theory and technique, equipment, the technique will for new superheated steam circulation method residues processing technique Steaming process residues processing technique is taken away slag heat mainly by water vapor and steam superheating process and is changed to mainly by superheated steam and its tape loop Slag heat is walked, although new technique has also used water spray, vaporization and the steam superheating process of steaming process, new technology is mainly by overheated Steam cooling slag, it is no longer purpose based on heat exchange which is sprayed water and produces steam, and which mainly makes slag solidification and produces the mistake of steam Journey, its Thermal Cycling of crossing exchanged heat mainly by superheated steam exchange heat, and new technology will be with economizer, vaporizer, superheater Plain cylindrical furnace be integrally used separately, only used vaporizer, the superheater of boiler, economizer entered with an independent boiler Exercise, directly output Low Temperature Steam or hot water, circulating fan import is directly exported with vaporizer (being also heat exchange boiler) Connection, improves heat exchange boiler outlet output vapor (steam) temperature, it is ensured that do not produce condensation, i.e. steam through blower fan pressurization Posterior circle steam All the time circulate under superheat state, dedusting, circulation is carried out using the uncondensable feature of steam under superheat state, using overheated shape The characteristics of steam specific heat is big under state, temperature is high is exchanged heat.New technology is exchanged heat by can be classified using two sets of heat exchange boilers, high The thermal recovery of energy level is exchanged heat with high parameter boiler, exports high-quality steam, and the thermal recovery low parameter boiler heat exchange of low-lying level is exported low Quality steam, it is achieved that highValue steam output is utilized, the comprehensive utilization of heat energy, new superheated steam circulation method residues processing technique Solve the problems, such as in steam circulation method residues processing technique that the circulation of steam blower fan is difficult and steam quality is poor, utilization rate is low, realize slag The complete utilization of heat, the thermal efficiency are high.Specifically new Slag treatment method is mainly improved from the following aspects：

One be using brand-new heat transfer theory and technique, equipment, the technique by the saturated vapor of steaming process Slag treatment and Soda pop combination cyclic process is changed into superheated steam circulation, mainly by superheated steam circulating cooling slag, by steam circulation method Slag treatment work It is changed into, mainly by superheated steam circulating cooling slag technique, solving steam circulation method mainly by water vapor process cooling slag technique in skill The problem that the circulation of steam blower fan is difficult and electrical power generation steam poor quality, utilization rate are low in residues processing technique, realizes the hot high-grade steam of slag Can export, the complete utilization of slag heat, the thermal efficiency are high；Two be the technique by with economizer, vaporizer, superheater plain cylindrical furnace Overall fractionation uses, and has only used vaporizer, the superheater of boiler, economizer is used with an independent boiler function , circulating fan import is directly connected with evaporator outlet (being also heat exchange boiler), heat exchange boiler outlet output is improve and is steamed Stripping temperature, it is ensured that steam does not produce condensation, i.e. steam and circulates under superheat state all the time after blower fan pressurization；Three is to improve The temperature of steam circulation, using high temperature super heated steam circulating cooling slag, is removed using the uncondensable feature of steam under superheat state Dirt, circulation, using being exchanged heat the characteristics of steam specific heat is big, temperature is high under superheat state, directly produce the steam of high-quality, Realize highValue steam-electric power, and then Steam Dust difficulty in steam circulation method residues processing technique is avoided, blower fan circulation difficulty A difficult problem, makes new Slag treatment method have more actual operability；Four is that the technique inherits the closed circuit of steam circulation method Slag treatment Circulation and the heat transfer theory using vaporescence, using water quenching and the cold technique of steam, produce steam using water spray, by water vapor Journey solidifies slag, direct steam generation, is heat transferring medium using the water and steam of low cost, using the big spy of superheated steam specific heat Point is exchanged heat, and then reduces volume, power of fan and the production and operation cost of system and device, it is to avoid air cooling slag is changed Hot speed is also easy to produce the problem of slag wool slowly；Five are exchanged heat by can be classified using two sets of heat exchange boiler devices, the thermal recovery of high level Exchanged heat with high parameter boiler, export high-quality steam, the thermal recovery low parameter boiler heat exchange of low-lying level exports low-quality steam, High parameter boiler adopts closed cycle, low parameter boiler open circuit circulation, and the technique is the constant of holding blower fan circulating load, will increase The part Low Temperature Steam output that can not participate in circulating, enter condensation emptying after secondary heat exchanger heat exchange, it is achieved that slag heat in full Utilize；Six is that the water spray described in new residues processing technique is primarily referred to as single spraying water, and circulation is primarily referred to as single superheated steam circulation, Steam is produced by single spraying water, by superheated steam circulating cooling slag, but its water spray is to refer to, also includes spraying air, steam cooling slag, Also include that water spray, air, steam combination mode cool down slag, by superheated steam, air, flue gas alone or in combination mode circulate cold But slag, its injection flow rate are also that the injection flow rate of general per kilogram slag changes in 0-0.5kg according to technological requirement different changes, its Water spray can both spray, it is also possible to stop, also allow not spray or spray water less, only by cyclical superheating steam, air, flue gas cooling slag； Seven is that secondary heat exchanger employs spray high-temperature water and air blasting method deashing, realizes online deashing at any time, does not affect normal production；Eight are Water saving, the thermal efficiency are high, and the method still using water quenching, make use of the vaporescence of steam, using superheated steam circulating cooling slag, And then economize on water, due to improve the circulating temperature of steam, realize highValue steam output, and then improve the thermal efficiency.

The theory of further heat exchange, method are different.Steam circulation method residues processing technique is mainly by steam and steam Change process take away slag heat, its produce steam be mainly based on saturated vapor, steam superheating mainly by external heat, overheated mistake Journey is bothered, and circulation is that saturated vapor dedusting, circulation are difficult based on saturated vapor, and what new overheating steam method technique was produced is Superheated steam, mainly takes away slag heat by superheated steam circulation, although two kinds of methods have water spray to utilize vaporescence, which sprays The water yield number, water spray purpose different, the result for producing steam is also different, and steam circulation method residues processing technique injection flow rate is slightly larger, The purpose of water spray is to take away slag heat by water vapor process, and the mainly low-temperature saturated steam of generation is circulated mainly by saturated vapor, After the method requires boiler heat exchange, vapor (steam) temperature is more low better, and best steam is all condensed, and after condensation, water is followed again by water pump Ring, circulating water temperature typically require to be less than 80 DEG C；And new overheating steam method technique injection flow rate is slightly smaller, needed even according to technique Can not spray water, only slag be cooled down by cyclical superheating steam, the purpose which is sprayed water mainly makes slag solidification, produces the process of steam, Directly produced is superheated steam, cools down slag mainly by cyclical superheating steam, and the steam needs of its circulating fan circulation are in overheated shape Carry out under state, by the overheated problem for avoiding steam condensation from circulating, its circulating fan steam exit temperature typically is required to be more than and is somebody's turn to do The temperature of saturated vapor under pressure.

The result of the technique of further heat exchange and generation is different.Two kinds of methods have Slag treatment, boiler heat exchange, spray Water conservancy vaporization, steam cycle process, but the technique of its purpose of spraying water, the technique of boiler heat exchange, steam circulation is different, production The parameter of technological requirement, thermal utilization effect are also different.Steam circulation method residues processing technique is mainly circulated using saturated vapor, its Cyclic steam temperature is relatively low, produces vapor (steam) temperature and is mainly determined by the sealability of valve, the better generation of the sealability of valve Steam pressure, temperature are higher, are difficult to improve as valve seal energy power restriction produces vapor (steam) temperature, produce the general temperature of steam and exist Less than 200 DEG C, the low then utilizing status of the temperature, pressure of steam are poor, and new superheated steam circulation technology is followed using superheated steam Ring, producing vapor (steam) temperature is built the pressure generation by system, and so seal request to valve is relatively low, by controlling circulating fan Operating pressure can achieve the porch pressure-fired of Slag treatment device, and the seal pressure of such Slag treatment device valve can be controlled in Once, common valve can meet requirement to 0.1Mpa, and the temperature which produces superheated steam is higher, typically on 200 DEG C of -900 DEG C of left sides The right side, less than 200 DEG C, general requirement must not enter heat exchange boiler, by arranging outside evacuation port.

The steam that steam circulation method residues processing technique slag is produced typically is generated electricity using directly output or warp " from superheater, vaporizer to The complete boiler heat exchange process of economizer " exchanges heat, and after boiler heat exchange, vapor (steam) temperature is more low better, and more low grade fever utilizing status are better, It is required that steam is all condensed, condensed water carries out recirculation by water pump, and general condensate temperature is less than 80 DEG C, and new overheated steaming Vapour cycle technique adopts " incomplete boiler heat exchange process ", and heat exchange boiler has only used the superheater of plain cylindrical furnace, evaporator section, Heat exchange belong to " part " heat exchange, after heat exchange output steam needs remain at superheat state, it is desirable to steam through blower fan pressurization after not Condensation is produced, steam output after general boiler heat exchange requires to be more than 120 DEG C.

Using circulation " in full ", that is, the steam for producing is again whole after boiler heat exchange for steam in steam circulation method residues processing technique Participate in cyclic process again, and new superheated steam circulation technology is circulated using " half amount ", a part of unnecessary steam is not Recirculation is participated in, solidifying through secondary heat exchange boiler heat exchange heel row air cooling, secondary cycle heat transfer process is increased in technique, high level Thermal recovery is exchanged heat with high parameter boiler, exports high-quality steam, and the thermal recovery low parameter boiler heat exchange of low-lying level exports low-quality steaming Vapour, as the difference of circulation technology method, production requirement are different, then Slag treatment device, heat exchange boiler structure are also different.

Further as circulation technology, method, parameter request are different, its result is also different.Steam circulation method slag What handling process was produced is saturated vapor, and saturated vapor dedusting, circulation are difficult, and heat exchange efficiency is low, as vapor (steam) temperature is low, pressure It is difficult that power is low, steam is dirty, heat exchange generates electricity, and overall thermal efficiency is low, and what new overheating steam method technique was produced is superheated steam, leans on Vapourss are circulated, and make which be in operation under superheat state all the time as long as strictly controlling steam cycle process production in, i.e., steam is not Condensation is produced, then Steam Dust, easily, heat exchange efficiency is high for circulation, realizes that high-quality steam is exported, and overall thermal efficiency is high.

Further apparatus is different：Due to method, technique, requirement and cyclic process difference, whole device system System there is also difference, and Slag treatment device, boiler all there occurs inside cleaner unit that certain change, circulating fan require also occur Change, while increase the partial devices of secondary cycle heat transfer process.

Further new superheated steam circulation method residues processing technique combines existing dry, wet slag Processing Equipment base A kind of new residues processing technique that researches and develops on plinth, with existing dry, wet slag processing method and my patent steam circulation method Slag treatment Technique is essentially different, and the steaming process that is previously proposed with me, steam circulation method have significant improvement.Although new is overheated Steam circulation method residues processing technique equally also contains water spray in obturator, be taken away slag thermal process using water vapor process, but Principle that system process is adopted, technical process, apparatus structure, heat exchange boiler form, and the result of steam-electric power all there occurs Big change, belongs to great structure, process modification, therefore proposes again.

Content of the invention

One kind is applied for for application number 200710157873《Blast furnace Slag treatment and slag heat energy utilization method and enforcement dress Put》, application number 200810229364 applied for one kind《Steam circulation method heat energy of blast furnace is utilized and Slag treatment implementation》's Deficiency, the present invention propose a kind of new slag treatment and heat-energy recovering apparatus.New superheated steam circulation method residues processing technique is combined Existing dry, wet slag handling process, technical characterstic, make Slag treatment process carry out completely in hermetic container, make use of water vapor And superheating process heat absorption big the characteristics of, the slag water spray after the mechanical granulation in Slag treatment device produces superheated steam, then follows The ring steam, cools down slag mainly by superheated steam, carries out dedusting, heat exchange using the non-condensing feature of superheated steam water, using overheated The overheated of steam realize that blower fan is circulated, and the technique is by steaming process residues processing technique with superheater, vaporizer, economizer " full structure boiler " is split, and merely with its superheater, evaporator section, boiler adopts " incomplete " heat exchange side Formula, i.e. steam delivery outlet after boiler heat exchange is still maintained at superheated steam state, using superheated steam circulating cooling slag, utilizes The incoagulable feature of superheated steam realizes recirculation by blower fan, and then achieves sealing and circulating heat transfer process and the generation of Slag treatment High-temperature steam purpose, it is achieved that high-quality clean steam is exported.

Further, heat transfer process here is employed once is carried out by can be classified with secondary heat exchange boiler, i.e. boiler Heat exchange, the thermal recovery of high level are exchanged heat with high parameter boiler, output high-quality steam, the thermal recovery low parameter boiler heat exchange of low-lying level, Low-quality steam is exported, and the circulation of Slag treatment device is again returned to all the way after blower fan pressurization through the steam after a heat exchange boiler heat exchange Cooling slag, enters secondary heat exchanger heat exchange all the way, and output Low Temperature Steam or high-temperature water after heat exchange, the steam after heat exchange are cold through spraying water Reclaim after solidifying or empty.

Further, slag cooling property require slag need chilling in high temperature section, by chilling retain slag activity, newly Superheated steam circulation method residues processing technique remain slag high temperature section water quenching emergency cooling process, high temperature section adopts mechanical granulation+water spray (vapour) Cooling procedure, the rate of cooling for improving slag by mechanical granulation+water spray chilling retain its activity, here water spray be mainly chilling, Make slag solidification, produce the process of steam, it is to avoid air cooling is also easy to produce the problem of slag wool, its heat exchange of spraying water is only the one of whole slag heat Realize mainly by steam circulation in individual part, substantial amounts of heat.New residues processing technique slag low-temperature zone cooling uses superheated steam and follows Ring, using steam specific heat big the characteristics of cool down slag, by superheated steam circulation take away slag heat, using superheated steam high-grade heat energy Change height intoValue steam-energy output.

As new superheated steam circulation method residues processing technique high temperature section still adopts Water Quenching Slag technique, low-temperature zone to adopt steam circulation Cooling slag technique, the property feature segmentation according to slag carry out cooling slag, do not change the property of slag, maintain the activity of slag, right The later use of slag does not affect, and the slag of generation is dry slag, convenient transport, storage.

Further secondary heat exchange boiler here can be independent low-pressure heat exchange boiler, can now produce low temperature and satisfy And steam, Low Temperature Steam can be used to heat a heat exchange boiler deaerator feedwater, and generate electricity for steam turbine QI invigorating, it is also possible to make Economizer for a heat exchange boiler is used, but will now produce substantial amounts of hot water output.

The water spray of further slag is the process for making slag solidification, producing steam, improve slag activity, and the amount of water spray is root According to technique strictly control, mainly by entering what the quantity of slag, output vapor (steam) temperature and cyclic steam amount determined, injection flow rate is more will generation Grain slag, injection flow rate have lacked impact quenching effect, granulating device cooling, and the fewer cyclic steam amount of injection flow rate is bigger, the steam of generation Temperature is higher, and slag heat utilization efficiency is bigger, and injection flow rate more systemic circulation quantity of steam is fewer, and the vapor (steam) temperature of generation is lower, heat utilization efficiency Relatively low, general ton slag injection flow rate changes in the range of 0-0.5t/t.

The further water spray of slag here is to refer to, and can also be spraying steam, spraying, spray air, spray as needed Steam water interface；Its cyclical superheating steam is also to refer to, and also includes that introducing portion flue gas, hot-air are circulated cooling, here Introducing portion flue gas, hot-air participate in circulating the temperature that its objective is finger to increase blood circulation, or avoid system from lowering the temperature, or For system warm-up etc.；Here the mechanical granulation of slag is also included using water spray, spraying, spraying steam, spray steam-water mixing etc., pressured Power kinetic energy carries out broken slag process.

The specific injection flow rate of Slag treatment, pressure here are changes, can both spray and can also stop, be i.e. Slag treatment mistake Water spray in journey employs pressure changeable, variable-flow and carries out Slag treatment, and its injection flow rate, pressure are freely chosen according to process requirements.By Carry out in hermetic container in the technique Slag treatment, employing pressure changeable, flow carries out Slag treatment, controls injection flow rate, Vaporization and the superheating process of water is make use of, therefore water consumption is very low, saves water and energy.

The further output of Slag treatment device here vapor (steam) temperature requires to remain at superheat state, typically requires defeated Go out temperature more than 200 DEG C, condensation diffusion mouth emptying is entered by Valve controlling during less than 200 DEG C, the cyclic steam temperature requirement exists Circulating fan steam outlet is remained under the pressure state more than saturated-steam temperature point, it is ensured that steamed in blower fan cyclic process Vapour is not condensed, and typically requires output temperature more than 110 DEG C, and the circulating pressure of system is by thickness of feed layer and system circulation resistance Determine, general requirement keeps pressure-fired in slag inlet site pressure.

The maximum innovative point of further new residues processing technique method is exactly using vaporizing and be circulated throughout using few water spray Journey cools down slag, is exchanged heat using superheated steam, carries out recirculation using superheated steam half cycle technique, using steam under superheat state Uncondensable feature carries out dedusting, using being exchanged heat the characteristics of under superheat state, steam specific heat is big, temperature is high, will be high-grade Slag heat energy is directly changed into high-grade steam-energy, directly produces superheated steam output.

The further method of the present invention is primarily referred to as the processing method of slag, next to that the method for steam heat-exchanging and generating, Mainly comprising two heat transfer process, a Condensation, a power generation process, wherein two heat transfer process is slag to its method Heat transfer process and boiler heat exchange process is processed, its boiler heat exchange process divides a boiler heat exchange and secondary boiler heat exchange process again, its Steam circulation is circulated using two, and one is that steam again returns to Slag treatment device through blower fan pressurization and follows after the heat exchange of heat exchange boiler Ring cools down slag, forms major cycle process, and one is to enter secondary heat exchanger heat exchange, and after heat exchange, output Low Temperature Steam or high-temperature water, change Steam after heat after jet condensation is reclaimed or empties, and forms time cyclic process, and its condensation process is mainly by cooling pump, pipe, tower And the part such as pond constitutes, its electricity generation system is generated electricity with existing steam boiler does not have essential difference, therefore can not pay attention to.

The Slag treatment heat transfer process of the slag, is that Slag treatment and slag heat transfer process are placed in hermetic container to carry out, make use of steam Change and the characteristics of superheating process heat absorption is big, the slag water spray after the mechanical granulation in Slag treatment device produces steam, recirculation The steam, mainly by superheated steam circulating cooling slag, carries out dedusting, heat exchange using the non-condensing feature of superheated steam water, utilized The overheated of vapourss realizes blower fan closed cycle, the boiler heat exchange process, both by with economizer, vaporizer, superheater Plain cylindrical furnace is integrally used separately, and has only used vaporizer, the superheater of boiler, and economizer is carried out with an independent boiler Use, circulating fan import is directly connected with heat exchange boiler evaporator outlet (being also heat exchange boiler), heat exchange pot is improve Outlet of still exports vapor (steam) temperature, it is ensured that after blower fan pressurization, steam does not produce condensation, i.e. steam and circulates under superheat state all the time, Dedusting, circulation are carried out using the uncondensable feature of steam under superheat state, using steam specific heat under superheat state is big, temperature is high Feature is exchanged heat, and new technology is exchanged heat using two sets of heat exchange boiler systems and by being classified, the thermal output high-quality of high level Steam, the low-quality steam of the thermal output of low-lying level, it is achieved that highValue steam output is utilized.

Superheated steam circulation method residues processing technique system and device is mainly by pans, mechanical granulation device, Slag treatment dress Put, cleaner unit, circulating fan, heat exchange boiler, secondary heat exchange boiler, electromotor, condenser, condenser pump, a steam cold Solidifying emptier, high pressure cleaning pump, the part such as slag input/output unit and automatic control system are constituted, its technological process such as Fig. 1 Shown.

Key equipment of the further Slag treatment device for slag disposal system, which can be understood as the Slag treatment system of broad sense Bulk cargo puts the tank container with narrow sense, and its system and device generally comprises tank body, slag mechanical granulation device and slag and imports and exports closed-type feed Device, its structure can need to be adjusted according to scene and technique, typically vertical installation, can a device or the parallel connection of several devices The system and device of composition, its tank container can the tank that combines of circular, square or multiple solids, or 2-3 tank string, The combinative structure of associating, can set up the constructional devices such as heat exchange fluid bed, fixed bed, dedusting, or peace according to requirements inside which The construction and devices such as high pressure water cleaning, water-cooling wall, abrasion-proof backing block are filled, both the not simple list tank container of tank, can be according to use Demand is arranged to a composite structure equipment；Enter requirement of slagging tap in order to meet Slag treatment device, at the top of slag feed arrangement and Bottom, is provided with the charging/discharging device of slag, and the charging/discharging device can be chute, funnel, plunger, bulb stopper, valve composition Combination unit, or the closed-type feed device of tipping bucket, fluid column, rotating blanking valve, valve and tank composition；Here pans are Sheng slag Tank container, by pans meet storage slag, uniform flow slag input purpose；Here slag mechanical granulation device is the machinery of liquid slag Granulation apparatus, realize slag particle by the equipment, and the equipment can be disc type, mechanical granulation device, or the spray such as wheeled The devices such as water, vapour, gas, carry out slag using high-pressure water vapor and crush；Cleaner unit is the common cleaner unit in market, fills installed in Slag treatment Steam outlet position is put, dustproof function is played；Here circulating fan refers generally to ordinary cycle blower fan, or other pressurizations are followed Ring apparatus, for the purpose of meeting steam circulation, the blower fan typically adopts VFC, meets fan delivery change by VFC Demand；Once exchange heat improved form of the heat boiler for plain cylindrical furnace, and plain edition boiler is split by the boiler, only remains vaporizer And superheater, that is to say, that belong to the heat exchange boiler of simple type, or delivery outlet temperature is using operation under superheat state The common heat exchange boiler of " full structure "；The secondary heat exchange boiler is common shell-and-tube or heat pipe heat exchanging boiler, and which can also take Disappear, a part economizer as a heat exchange boiler is used；Here TRT can be screw rod electromotor or vapour Turbine generator；Here condenser is the further condensation place of steam, and the condenser is the conventional condensing structure of existing electricity generation system Device；Here condenser pump is conventional pump, meets water circulation effect；Here steam condensation emptier is that steam discharging is diffused A kind of structure, be mainly made up of pipeline, valve, pump etc.；Here high pressure cleaning pump is the pressure pump of cleaning boiler dedusting, When using other method dedustings, the device is cancelled.

The steam that further Slag treatment device is produced can also not generated electricity as needed, and now electricity generation system process can Cancel, steam is directly exported for warming oneself, Treatment of Coking Effluent, coal damping, sintering feed heating, material thaw, desalinization Or vapour is dragged.

Employ on further equipment once with secondary heat exchange boiler, using secondary heat exchange process, steam is by can divide Level is exchanged heat, and the thermal recovery of high level is exchanged heat with high parameter boiler, exports high-quality steam, the thermal recovery low parameter pot of low-lying level Stove exchanges heat, and exports low-quality steam.

Further new residues processing technique method also allows to cancel secondary heat exchanger and its heat transfer process, once exchanges heat Output steam after boiler heat exchange is directly emptied or is condensed, but now have lost partial heat energy, and slag heat is not in full to be utilized.

Introducing portion flue gas, hot-air is allowed to participate in circulation in further new residues processing technique flow process as needed (consideration has alternative, does not outpour on figure), for increasing the temperature of circulation gas, or avoids system and device from lowering the temperature, or is used for System and device heating etc..

The method have the advantages that：New superheated steam circulation method residues processing technique combine existing dry, wet slag handling process, Technical characterstic, makes Slag treatment process carry out completely in hermetic container, produces steam using water spray, mainly uses superheated steam Circulation carries out cooling slag, solidifies slag using water spray, forms the activity that glass dregs keep slag using chilling, and the recirculation steam is cold Fan outlet steam is controlled to run in overheat conditions by but slag, the technique all the time, using carry out under steam superheating state dedusting, Blower fan is circulated, and is solved the problems, such as that steam circulation, dedusting are difficult, is improve the quality of output steam, it is achieved that steam is highValue Output, improves heat utilization efficiency.The method is with traditional wet method, dry method Slag treatment heat and steaming process residues processing technique no matter from original Reason, equipment, technique all have substantial difference.

Furtherly advantage is：

Than air-cooled：Slag heat energy profit with University Of Chongqing, Northeastern University, NKK companies, Russia's RU2018494 patents as representative With method, be all adopt first crush slag, be then that carrier takes away slag heat with air, realize slag heat energy utilization through boiler heat exchange, These methods can be understood as Wind-cooling type.

It is understood that when 200-900 DEG C under 0.15Mpa (absolute pressure) superheated steam 1.98-2.3kJ/kg. DEG C or so, 500 DEG C of specific heat Shi Midu 0.42kg/m3, about 1.034-1.14KJ/kg. DEG C or so of the avergae specific heat of 200-900 DEG C of dry air, density when 500 DEG C 0.676kg/m3, after conversion under 0.15Mpa steam 0.88kJ/m3. DEG C of volume specific heat, the volume specific heat 0.676kJ/ of air M3. DEG C, from data, under unit volume, air heat absorption will be lacked, that is, take away same hot-air circulation requirement big.New slag Processing method uses water-spraying control, as the vaporescence of water absorbs heat greatly, thus superheated steam recycle ratio air circulation fans Power is little, and system and device is relatively also little, and water is drawn materials lower than the easy cost of air.

Compare water-cooled：Existing Lhasa method, INBA methods, wheel method, Ming Tefa, flushing cinder method etc. cool down slag by the heat absorption of water quenching water, can To be interpreted as water-cooling type.The water vapor heat absorption for above calculating 1kg under an atmospheric pressure is that 1kg25 DEG C of water becomes 100 DEG C of water heat absorptions 7.17 times, the water that it is 25 DEG C that 1kg25 DEG C of water becomes the heat that 0.5Mpa152 DEG C of saturated vapor absorb becomes 100 DEG C and absorbs heat 8.7 times, traditional residues processing technique uses water quenching water-cooling process, and substantial amounts of heat is fully entered in water, water consumption certainty Greatly, ton iron loss water is calculated for 3000-4000kg or so through actual.Warmed oneself using pulp water heat exchange mode, water circulating pump power needs Amount is larger, and the big radiating in pond is also big, and blast furnace enters heat exchanger slag water temperature typically at 85 DEG C or so, goes out heat exchanger coolant-temperature gage at 50 DEG C Left and right, available temperature range are little, while some high temperature pulp water can not participate in circulating, therefore heat exchange efficiency is low, through reality Border counts heat exchange efficiency only in 3-4% or so.New Slag treatment method uses superheated steam circulation, using vaporization and the mistake of water Thermal process cools down slag, and water consumption is very low, is computed ton iron loss water only 50-200kg or so, water-saving rate more than 95%.At new slag Slag UTILIZATION OF VESIDUAL HEAT IN, non-environmental-pollution, therefore the method water saving, energy-saving and environmental protection are realized in the water saving of reason method simultaneously.

Furtherly advantage is：

In operation cost：In the production of superheated steam circulation method residues processing technique in addition to certain water is consumed, seldom there are other costs of raw material to disappear Consumption, and water consumption is reduced much with existing wet method Slag treatment, with obvious water-saving result, in production, maximum cost is Circulating fan power consumption cost, and Slag treatment device be placed on blast furnace more remote when slag cost of transportation, transport into discounting for slag This, its circulating fan operating cost is few more a lot of than wind quenching method circulating fan operating cost.

Equipment, technique：Superheated steam circulation method residues processing technique device directly can export high-quality steam, at its nucleus equipment slag Reason device, heat exchange boiler are all welding structural elements, and processing and manufacturing is easy；Slag treatment process is carried out in hermetic container, using water, Steam is cooling medium, keeps nature of glass slag, does not change the property of slag, slag later use is not affected；System heat loss Main is all radiation loss, deslagging heat loss and condensed water heat loss, as long as carrying out system insulation, its thermal efficiency is of a relatively high.

Achieve blast furnace slag heat utilization：Superheated steam circulation method residues processing technique is realized directly exporting high temperature super heated steam, by Gao Pin Matter slag heat energy is converted to high-grade steam and can export, and generating efficiency is high, is computed Slag treatment part heat utilization efficiency 82%, boiler portion Divide heat utilization efficiency 83%, through preresearch estimates, it is contemplated that ton ferrum can produce the superheated steam and saturated vapor of pressure 0.5-4MPa about 150-270kg/t, ton ferrum can generate electricity 20-40kwh, and electricity price calculates ton ferrum wound power benefit 10-24 units/t ferrum by 0.6.Press certain Steel mill's 2850m3 blast furnaces, produce 6400t ferrum daily, and than 360kg through primary Calculation, then hour producing steam 42t/h, steam are adopted slag iron With generating, it is contemplated that hour generating 7000kwh, year generating 56478720kw/a, electricity price calculate hour wound power benefit 4200 by 0.6 Unit/h, 3388.72 ten thousand yuan/a of annual benefit.

The pollution that existing Slag treatment method is caused is eliminated to the corrosion of surrounding devices and to air：In existing Slag treatment method, Arrange outside the pulp water part of generation, while water produces a large amount of steam containing alkaline goods and materials and substantial amounts of CO with red slag directly contact₂Gas, These gases are mingled with the harmful substances such as sulfur dioxide, hydrogen sulfide simultaneously, freely discharge and cause corruption to atmospheric pollution and neighbouring equipment Erosion；And new Slag treatment method steam, water are controlled in the system of a closing completely, system adopts preservative treatment, condensate Recycle, blowdown is recycled after can entering pond precipitation, in theory without outer draining, vapour, without environmental pollution, is especially suitable for Current energy-saving and emission-reduction situation.

Furtherly advantage is that slag still adopts Water Quenching Slag, the property of slag not to change, do not have the later use of slag Affect；The Slag treatment apparatus uses tank container, in the slag output procedure after Slag treatment extracts slag iron using magnetic separation Convenient easy.

Description of the drawings

Fig. 1 superheated steam circulation method residues processing technique schematic flow sheets.

Carry out with reference to the accompanying drawings and detailed description being further illustrated the present invention.

Specific embodiment

As shown in figure 1, superheated steam circulation method residues processing technique and device are mainly filled by pans 1, mechanical granulation Put 2, Slag treatment device 3, cleaner unit 5,6, heat exchange boiler 7 of circulating fan, secondary heat exchange boiler 8, electromotor 9, Condenser 10, condenser pump 11, steam condensation emptier 12, high pressure cleaning pump 13, slag input/output unit 4 and control automatically The part such as system processed constitutes.

Technical process is summarized：

Superheated steam circulation method Slag treatment electrification technique as well as mainly includes two heat transfer process, a Condensation, a generating Process, wherein two heat transfer process is Slag treatment heat transfer process and boiler heat exchange process, and its boiler heat exchange process divides a boiler again Heat exchange and secondary boiler heat exchange process, its condensation process are mainly made up of the part such as cooling pump, water pipe, tower and pond, play steaming Vapour emptying, pressure are adjusted, shunting condensation, and electricity generation system is generated electricity with existing steam boiler does not have essential difference, the system Comprising its purpose of power generation process primarily to conveniently watching, describing conveniently, such as generation steam does not generate electricity, in its figure in figure Power generation process can be cancelled.

New residues processing technique is carried out in hermetic container Slag treatment device completely using Slag treatment process, make use of water vapor and mistake The characteristics of thermal process heat absorption is big, the slag water spray after the mechanical granulation in Slag treatment device produce superheated steam, and recirculation should Steam, cools down slag mainly by superheated steam, carries out dedusting, heat exchange using the non-condensing feature of superheated steam water, and the technique is by steam Method residues processing technique with boiler split, merely with its superheater, evaporator section, boiler is using incomplete heat exchange side Formula, i.e. steam delivery outlet after boiler heat exchange still keeps superheated steam state, passes through wind using the incoagulable feature of superheated steam Recirculation realized by machine, and then achieves the sealing and circulating heat transfer process of Slag treatment and produce high-temperature steam purpose, it is achieved that high-quality Clean steam output generates electricity, and process chart is shown in Fig. 1.

Specifically the course of work is：

Slag treatment and boiler heat exchange process：

The red melt cinder that blast furnace comes flows into or pours into pans through slag runner or slag ladle, and melt cinder enters mechanical granulation device through pans and carries out Mechanical granulation, through water-spraying control slag in granulation and dropping process, water spray directly produces superheated steam, and superheated steam passes through slag material layer The Low Temperature Steam that returns with boiler heat exchange Posterior circle mixes further cooling slag, and dedusting structure of the steam after heat exchange inside is removed After dirt, output exchanges heat to heat exchange boiler after dedusting to outside cleaner unit dedusting, and heat exchange boiler here is employed to commonly having Hot device, vaporizer, " complete " heat exchange boiler of economizer are split, vaporizer merely with " plain cylindrical furnace ", Superheater, " part " heat exchange boiler delivery outlet vapor (steam) temperature for retaining is improved to superheat state, it is ensured that in blower fan cyclic process Steam is not condensed, using superheated steam circulating cooling slag.Through the steam point two-way after a heat exchange boiler heat exchange, pass through all the way Slag treatment device circulating cooling slag is again returned to after blower fan pressurization, secondary heat exchanger heat exchange is entered all the way, is exported after heat exchange, pass through Reclaim after jet condensation or empty, the slag of generation is exported through the slag output device of bottom.Here heat transfer process employ once and Secondary heat exchange process, i.e. steam are exchanged heat by can be classified, and the thermal recovery of high level is exchanged heat with high parameter boiler, and output high-quality is steamed Vapour, the thermal recovery low parameter boiler heat exchange of low-lying level export low-quality steam.

Here, secondary heat exchange boiler can be used as the heat exchange boiler of independent low-pressure, now can produce Low Temperature Steam, Low Temperature Steam can be used to heating a heat exchange boiler deaerator feedwater, and for steam turbine QI invigorating or the direct generation of electricity, secondary here change Heat boiler can also be used as the economizer of a heat exchange boiler, but will now produce substantial amounts of hot water output.

Here the water spray of slag is the process for making slag solidification, producing steam, improve slag activity, and the amount of water spray is strictly controlled according to technique System, is mainly determined by entering the quantity of slag, output vapor (steam) temperature and cyclic steam amount, more than injection flow rate, grain slag, injection flow rate will be produced Lack impact quenching effect, granulating device cooling, generally speaking injection flow rate is more few better, and the fewer cyclic steam amount of injection flow rate is bigger, The vapor (steam) temperature of generation is higher, and outer row's secondary heat exchange steam is fewer, and slag heat utilization efficiency is bigger, and injection flow rate more systemic circulation quantity of steam is more Few, the vapor (steam) temperature of generation is lower, and outer row's secondary heat exchange steam is more, and heat utilization efficiency is relatively lower, and general ton slag injection flow rate exists Change in the range of 0-0.5t/t.

Furtherly the water spray of slag, cyclical superheating steam are to refer to here, and which is primarily referred to as using water-spraying control slag, by vaporizing Journey takes away slag heat, takes away slag heat by superheated steam circulation, and which is sprayed water also includes spraying steam, spraying, spray air, spray steam-water mixing Thing, also includes participating in partial fume, hot-air in its steam cycle process, such as participates in hot-blast stove fume etc., using heat smoke, Hot-air meets the heating of blood circulation, insulation, improves generated energy etc.；Here the mechanical granulation of slag is also to refer to, and which includes adopting With water spray, spraying, spraying steam, spray steam-water mixing, depended on pressure kinetic energy carries out broken slag.

Here Slag treatment device output vapor (steam) temperature requires to remain at superheat state, typically requires output temperature more than 300 DEG C, Condensation diffusion mouth emptying is entered by Valve controlling during less than 200 DEG C, the cyclic steam temperature requirement is in circulating fan steam (vapor) outlet Place remains under the pressure state more than saturated-steam temperature point, it is ensured that in blower fan cyclic process, steam is not condensed；System The circulating pressure of system is determined that by thickness of feed layer and system circulation resistance general requirement is in slag inlet site pressure holding pressure-fired or just Pressure.

Here cyclic steam amount is determined by system process parameters, with slag flow, injection flow rate, output vapor (steam) temperature, circulation Steam flow is relevant, and in production, the blower fan adopts VFC, the demand for meeting fan delivery change by VFC.

Here, steam through secondary heat exchange boiler heat exchange when will take part of the condensate, cause dust bonding phenomenon, new Slag treatment dress Put using spray high-temperature high pressure water cleaning way dedusting, as heat exchange pot in-furnace temperature is low, spray high-temperature high pressure water cleaning way is to boiler Cooling influence limited, can achieve online dedusting at any time.

Power generation process：

The superheated steam that Slag treatment device is produced is recycled into heat exchange boiler heat exchange by blower fan, produces steam and enters electricity generation system generating, Steam after generating is condensed into liquid in condenser, then returns in boiler through pump pressurization, and its power generation process is with common heat exchange boiler Generate electricity the same.

Further Slag treatment device arrangement can be arranged near blast furnace as needed, or is arranged in blast furnace position farther out, When Slag treatment device is arranged in blast furnace place farther out, slag will arrive Slag treatment field through the transport of the devices such as tank car, then topple over dress through tank car Put to pour into and carry out in pans Slag treatment.

Slag treatment device in further production is typically configured using 1-4, standby by the using and the reserved or dual-purpose one Mode meets blast furnace residues processing technique requirement, realizes steam seriality output services requirement.

Claims

1. a kind of liquid slag is processed and waste-heat recovery device，It is characterized in that main by pans、Mechanical granulation device、Slag treatment device、Cleaner unit、Circulating fan、Heat exchange boiler、Secondary heat exchange boiler、Electromotor、Condenser、Condenser pump、Steam condenses emptier、High pressure cleaning pump，Slag input/output unit and automatic control part composition，Wherein Slag treatment device is the key equipment of slag disposal system，Which can be understood as the slag disposal system device and the tank container of narrow sense of broad sense，Its system and device generally comprises tank body、Slag mechanical granulation device and slag import and export closed-type feed device，Its structure can need to be adjusted according to scene and technique，Typically vertical installation，Can the system and device that composes in parallel of a device or several devices，Its tank container can be circular、The tank that square or multiple solids are combined，Or the series connection of 2-3 tank、The combinative structure of suit，Heat exchange fluid bed is set up according to requirements inside which can、Fixed bed、Dedusting structure device，Or high pressure water cleaning is installed、Water-cooling wall、Wear-resisting lining plate structure and device，Both the not simple list tank container of tank，A composite structure equipment can be arranged to according to use demand；Enter requirement of slagging tap in order to meet Slag treatment device, at the top and bottom of slag feed arrangement, the charging/discharging device of slag is installed, the charging/discharging device is chute, funnel, plunger, bulb stopper, the combination unit of valve composition, or the closed-type feed device of tipping bucket, fluid column, rotating blanking valve, valve and tank composition；Here pans are the tank container for containing slag, the purpose for meeting storage slag, uniform flow slag input by pans；Here slag mechanical granulation device is the mechanical granulation equipment of liquid slag, realizes slag particle by the equipment, and the equipment is disc type, wheel machine granulating device, is water spray, vapour, device of air, carries out slag using high-pressure water vapor and crush；Cleaner unit is the common cleaner unit in market, installed in Slag treatment device steam outlet position, plays dustproof function；Here circulating fan refers to ordinary cycle blower fan, or other pressurized circulation equipment, and for the purpose of meeting steam circulation, the blower fan typically adopts VFC, the demand for meeting fan delivery change by VFC；Once heat exchange heat boiler is the improved form of plain cylindrical furnace, plain edition boiler is split by the boiler, vaporizer and superheater are only remained, that is to say, that belong to the heat exchange boiler of simple type, or delivery outlet temperature is using the plain edition heat exchange boiler of " the full structure " that runs under superheat state；The secondary heat exchange boiler is common shell-and-tube or heat pipe heat exchanging boiler, and which can also be cancelled, and a part economizer as a heat exchange boiler is used；Here TRT is screw rod electromotor or steam turbine generator；Here condenser is the further condensation place of steam, and the condenser is the conventional condensing constructional device of existing electricity generation system；Here condenser pump is conventional pump, meets water circulation effect；Here steam condensation emptier is a kind of structure that steam discharging is diffused, mainly by pipeline, valve, pump group into；Here high pressure cleaning pump is the pressure pump of cleaning boiler dedusting, and when using other method dedustings, the device is cancelled.

2. Slag treatment as claimed in claim 1 and waste-heat recovery device, it is characterised in that：Slag treatment is hermetic container, the characteristics of water vapor and big superheating process heat absorption is make use of in hermetic container, slag water spray after mechanical granulation in Slag treatment device produces superheated steam, the recirculation steam, slag is cooled down mainly by superheated steam, the boiler will be with economizer, vaporizer, the plain cylindrical furnace of superheater integrally splits use, the vaporizer of boiler has only been used, superheater, economizer is used with an independent boiler function, circulating fan import is directly connected with evaporator outlet (being also heat exchange boiler), improve cyclic steam temperature, improve fan outlet vapor (steam) temperature, after guaranteeing to pressurize through blower fan, steam does not produce condensation, i.e. System steam is run all the time in overheat conditions.

3. Slag treatment as claimed in claim 1 and waste-heat recovery device, it is characterised in that：The heat transfer process of its slag employs two heat transfer process, i.e. Slag treatment heat transfer process and boiler heat exchange process, employs secondary boiler heat exchange, i.e., once with secondary boiler heat exchange；Steam is exchanged heat by can be classified, the thermal recovery of high level is exchanged heat with high parameter boiler, exported high-quality steam, the thermal recovery low parameter boiler heat exchange of low-lying level is exported low-quality steam；Here secondary heat exchange boiler is independent low-pressure heat exchange boiler, or is used as the economizer of a heat exchange boiler, and its secondary heat exchange boiler can also be cancelled, the Low Temperature Steam after a heat exchange boiler heat exchange is directly emptied or condensed.

4. a kind of liquid slag described in employing claim 1 process and waste-heat recovery device liquid Slag treatment and heat recovery method, methods described is：Slag treatment process is carried out in hermetic container，Make use of the characteristics of water vapor and big superheating process heat absorption，Slag water spray after mechanical granulation in Slag treatment device produces superheated steam，The recirculation steam，Slag is cooled down mainly by superheated steam，Dedusting is carried out using the non-condensing feature of superheated steam water、Heat exchange，Overheated using superheated steam realizes that blower fan is circulated，The technique is by steaming process residues processing technique with superheater、Vaporizer、" the full structure boiler " of economizer is split，Merely with its superheater、Evaporator section，Boiler adopts " incomplete " heat exchange mode，That is steam delivery outlet after boiler heat exchange is still maintained at superheated steam state，Using superheated steam circulating cooling slag，Recirculation is realized by blower fan using superheated steam incoagulable feature，And then achieve the sealing and circulating heat transfer process of Slag treatment and produce high-temperature steam purpose，Achieve the output of high-quality clean steam.

5. further method according to claim 4，Its method is primarily referred to as the processing method of slag，Next to that the method for steam heat-exchanging and generating，Its method includes two heat transfer process，One Condensation，One power generation process，When the steam that Slag treatment device is produced does not generate electricity，Its power generation process can be cancelled，Wherein two heat transfer process is Slag treatment heat transfer process and boiler heat exchange process，Its boiler heat exchange process divides a boiler heat exchange and secondary boiler heat exchange process again，Its steam heat-exchanging circulation is circulated using two，One is to again return to Slag treatment device circulating cooling slag through the steam after a heat exchange boiler heat exchange after blower fan pressurization，Form major cycle process，Secondary heat exchanger heat exchange is entered all the way，Output Low Temperature Steam or high-temperature water after heat exchange，Steam after secondary heat exchange after jet condensation is reclaimed or empties，Form secondary cyclic process，Its Condensation is a kind of structure that steam discharging is diffused，Mainly by pipeline、Valve and pump group into.

6. further method according to claim 4, its method is：New superheated steam circulation method residues processing technique adopts sub-sectional cooling; its high temperature section remains pulp water and quenches emergency cooling process; high temperature section adopts mechanical granulation+water spray (vapour) cooling procedure; the rate of cooling that slag is improved by mechanical granulation+water spray chilling; retain its activity; by chilling of spraying water, make slag solidification, produce steam; low-temperature zone adopts superheated steam circulating cooling; slag heat is taken away mainly by superheated steam circulation; using superheated steam specific heat big the characteristics of; by superheated steam circulating cooling slag, can be exchanged heat using superheated steam high-grade, be realized highValue steam-energy output.

7. further method according to claim 4, its method is：This process increases cyclic steam temperature, it is required that steam is circulated all the time in overheat conditions, with superheated steam circulating cooling slag, its technological requirement Slag treatment device outlet steam temperature is more than 200 DEG C, it is preferred that at 300-900 DEG C, its circulating fan outlet vapor requires that saturated-steam temperature point is operated above under the pressure state all the time, preferably greater than 110 DEG C, the slag inlet site pressure of the technique Slag treatment device internal upper part requires pressure-fired, it is ensured that the use requirement of the closed slag input in slag inlet position.

8. further method according to claim 4, its method is：Water spray described in new residues processing technique is primarily referred to as single spraying water, circulation mainly singly refers to that superheated steam is circulated, steam is produced by single spraying water, lean on superheated steam circulating cooling slag, its water spray is to refer to, also include spraying air, steam cooling slag, also include that water spray, air, steam combination mode cool down slag；Its cyclical superheating steam is also to refer to, and also includes by superheated steam, air, flue gas mode circulating cooling slag alone or in combination, participates in circulation including introducing portion flue gas, hot-air；Here the mechanical granulation of slag is also to refer to, and which also includes that, using water spray, spraying, spraying steam, spray vapour gas mixture, depended on pressure kinetic energy carries out broken slag process.

9. further method according to claim 4, its method is：Here the injection flow rate of Slag treatment, pressure are not both change according to technological requirement, the injection flow rate of general per kilogram slag changes in 0-0.5kg, its water spray can both spray, can also stop, also allow not spray or spray water less, only by cyclical superheating steam, air, flue gas cooling slag, i.e., its water spray employs pressure changeable, variable-flow carries out Slag treatment, and its injection flow rate, pressure are freely chosen according to process requirements.

10. further method according to claim 4, its method is：The water spray of slag is the process for making slag solidification, producing steam, improve slag activity; the amount of water spray is strictly controlled according to technique; main by entering what the quantity of slag, output vapor (steam) temperature and cyclic steam amount determined; injection flow rate is more will to produce grain slag; injection flow rate has lacked impact quenching effect, granulating device cooling; the fewer cyclic steam amount of injection flow rate is bigger in general; the vapor (steam) temperature of generation is higher; slag heat utilization efficiency is bigger; injection flow rate more systemic circulation quantity of steam is fewer; the vapor (steam) temperature of generation is lower, and heat utilization efficiency is relatively low.