CN108998109A - A kind of process flow and implementation method of low heat value ammonia from coal, alumina silicate rock wool and sulphur - Google Patents
A kind of process flow and implementation method of low heat value ammonia from coal, alumina silicate rock wool and sulphur Download PDFInfo
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- CN108998109A CN108998109A CN201810833896.XA CN201810833896A CN108998109A CN 108998109 A CN108998109 A CN 108998109A CN 201810833896 A CN201810833896 A CN 201810833896A CN 108998109 A CN108998109 A CN 108998109A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/02—Monohydroxylic acyclic alcohols
- C07C31/04—Methanol
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- C10J3/82—Gas withdrawal means
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The present invention relates to the process flows and implementation method of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur, it is melted including air separation unit and coupled coal fusion and gasification device inward turning reaction equation and divides furnace, the methanol converted through methanol synthesis unit enters methanol rectification unit and further obtains qualified methanol product (CH3OH > 99%), into methanol tank.The molten liquid slag for dividing furnace unit to export of inward turning reaction equation is successively connected with tundish, rock wool production unit, slag iron separation unit, liquid slag produces rock wool product through rock wool production unit, residue obtains ferroalloy and slag particle after slag iron separation unit, the high-temperature vapour that Vaporizing cooling unit generates produces electricl energy supplement plant area's industrial production electricity consumption through cogeneration unit, and the unified flying dust feeding inward turning reaction equation collected is molten to divide furnace unit to carry out harmless treatment.
Description
Technical field
The invention belongs to chemical fields, and in particular to a kind of industry of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Process and implementation method.
Background technique
The low calorific value coals such as a large amount of gangues, lignite, coal slime, middle coal can be generated in coal production industry, relevant market is smaller,
Mass storage is in mining area.But the characteristic of its easy spontaneous combustion, and local atmosphere, water body and soil are caused seriously to pollute, gangue
Equal calorific values are relatively low, ash content is high, high rich in sulphur content, hardness, and unsuitable long distance transportation determines that its use scope is limited, it has also become
Mining area problem.
From the point of view of the utilization power of the current low calorific value coal resource in China, coal slime and middle coal is washed since calorific value is higher, have
Burning condition is generally transported outward with raw coal, or mixes burning for power generation and chemical industry.Height of the coal pavilion stone according to its calorific value, benefit
With mode difference, the gangue low for calorific value does not have burning condition, and such gangue, which is mostly used in, repairs the roads,
It is filled in Subsidence Land in Coal Mining Area or underground, or is used for land reclamation.For the gangue that calorific value is greater than, have burning condition,
The total strategy of energy resources comprehensive utilization is carried out according to country, mostly as fuel power generation function, realization is turned waste into wealth, and is changed evil and is
Benefit.
In low calorific value coal power generation applications, unit operation problem is also gradually prominent to be caused largely as unit total installation of generating capacity is small
Low calorific value coal can not rationally utilize and increase transport energy consumption, and the low calorific value coals such as a large amount of gangues is caused to be discarded；Low calorific value coal electricity
Factory relies on mining area, coal preparation plant mostly, and far from the vigorous region of electricity needs, online transmission of electricity is difficult；Unit run related specifications and
Shortage of standard can only execute at this stage according to conventional thermal power unit related specifications and standard；Boiler heating surface serious wear, the quantity of slag
It is excessive to lead to the frequent failure of slag-tapping device, fuel crushing scarce capacity.Though low calorie fuels power generation in China's obtains rapid progress,
Economic benefit waits to improve.
In coal gasification field, China's commonly several gasification technologies and closest implementation of the present invention at present.
1. atmospheric fixed bed intermittent anthracite (or coke) gasification technology
One of the Coal Gasification Technology that nitrogenous fertilizer industry in China's mainly uses at present, its main feature is that using atmospheric fixed bed air,
Steam intermittent gas preparation, it is desirable that the stone coal or coke of 25~75mm subject to raw material, it is low into factory's raw material availability, unit consumption height,
It is serious to atmosphere pollution that trivial operations, single furnace gas forming amount are low, blowing is dropped a hint, and belongs to the technique that will be phased out.
2. atmospheric fixed bed anthracite (or coke) oxygen-enriched continuous gasification technology
Its main feature is that using the oxygen-enriched anthracite that standard 15~35mm granularity can be used for gasifying agent, continuous gasification, raw material
Or coke, it improves into factory's raw material availability, it is pollution-free to atmosphere, maintenance of equipment work amount is small, maintenance cost is low, it is suitable for
There is anthracitic place, the existing intermittent gasification technology of normal pressure fixing layer is improved.
3. atmospheric fixed bed pure oxygen continuous gasification technology
Its main feature is that use pure oxygen with steam or pure oxygen with carbon dioxide for gasifying agent and continuous gasification, raw material can be used
Anthracite, coke, semicoke, moulded coal, the formed coke etc. of standard 8~25mm granularity, non-exhaust emission high into factory's raw material availability, nothing
Swell-warehouse cooling water, it is pollution-free to atmospheric environment, gasification efficiency is high, lime-ash carbon residue 0~3%.Gas quality is high, water-gas CO+H2
CO=70~72% in the thick gas of=82~85%, CO2 CO.Equipment flowsheet simplifies, and maintenance load is small, the overhaul life is long, dimension
It is low to repair expense, is used suitable for the configuration of the devices such as chemical industry, chemical fertilizer, hydrogen manufacturing, combustion gas.
4. Shandong surprise fixed bed coal pressurized gasification technology
It is mainly used for the coal of gasification lignite, incoherence or weak caking property, it is desirable that feed coal thermal stability height, chemical activity
Good, ash fusion point height, high mechanical strength, incoherence or weak caking property are suitable for production city coal gas and fuel gas.What it was generated
Tar, hydrocarbons content about 1% or so in coal gas, methane content about 10% or so.Tar separation, phenol-containing wastewater processing
Complexity is not recommended to produce synthesis gas.
5. ash agglomerating Coal Gasification Technology
Shanxi Inst. of Coal Chemistry, Chinese Academy of Sciences's technology.Its main feature is that coal adaptability is wide, belong to fluidized-bed gasification furnace,
Coal ash does not melt, and only makes lime-ash is molten to conglobulate or blocky lime-ash discharge.Can gasify lignite, low chemically active
Bituminous coal and anthracite, petroleum coke, investment is fewer, and production cost is low.The disadvantage is that operating pressure is relatively low, environmental pollution and flying dust
Stockpiling and problem of complex utilization need further to be solved.This technology is suitable for middle-size and small-size nitrogen fertilizer plant using coal on the spot or nearby
Resource changing raw material route.
6. grace bed pulverized coal gasification technology
Belong to improved Winkler ebullated bed coal gasifier, is suitable for gasification lignite and jet coal, it is desirable that feed coal is not
Bonding or weak caking property, ash content cryochemistry activity are good.Category fluidized-bed gasification furnace, 1000~1050 DEG C of bed middle portion temperature.It lacks
Point is that vapor pressure is normal pressure, and single furnace vaporization ability is low, and CH4 content is up to 1.5%~2.0% in product, and flying dust amount is big, to ring
Border pollution and flying dust stockpiling and problem of complex utilization have to be solved.This technology is suitable for having nearby the middle-size and small-size nitrogen fertilizer plant of lignite to change
Become raw material route.
7.GE water coal slurry pressurized gasification technology
Belong to air flow bed pressurized gasification technology, feed coal transport, slurrying are pumped into furnace system than the letter of dry powder coal pressure gasification
It is single, it is safe and reliable, with low investment.Single furnace production capacity is big, wider to feed coal adaptability, bottle coal, bituminous coal, ub-bituminous coal, anthracite,
The colm of sulphur coal and low ash smelting point, petroleum coke etc. can serve as gasified raw material.But it is required that feed coal dust burdening is lower, reduction
Property atmosphere under ash fusion point be lower than 1300 DEG C, ash viscosity-temperature property is good.Gasification system do not need it is outer for superheated steam and conveying gas
Change the N2 or CO2 for using feed coal.Gasification system overall thermal efficiency is up to 94%~96%, is higher than the Shell dried coal powder gasification thermal efficiency
(91%~93%) and GSP dried coal powder gasify the thermal efficiency (88%~92%).Gasification furnace structure is simple, is lining of fire brick, system
Make convenience, low cost.Coal gas dust removal is simple, is not necessarily to expensive high temperature and pressure fly-ash filter, with low investment.
8. polynary slurry pressurized gasification technology
The Coal Gasification Technology with independent intellectual property rights of Xibei Chemical Inst's exploitation, belongs to air flow bed single fire mouth descending system
Gas.Typical polynary slurry group, which becomes, contains coal 60%~65%, oil plant 10%~15%, water 20%~30%.
Multiinjector 9. (four burners) water coal slurry pressurized gasification technology
By East China University of Science, Yanzhou Coal Mining Lunan Chemical Fertilizer Plant, China Tianchen Chemical Engineering Co., Ltd's joint development.It is more to belong to air flow bed
Burner descending system gas uses lining of fire brick in gasification furnace.Multi nozzle of gasification furnace adjusting duty ratio single fire mouth gasification furnace is flexible, is suitable for
In the coal of gasification low ash smelting point.
10.Shell dry coal powder pressure gasifying technology
Belong to air flow bed pressurized gasification technology.Gasifiable lignite, bituminous coal, anthracite, petroleum coke and high ash melting point coal.Enter
Furnace feed coal is the dry pulverized coal after drying, levigate.Dry pulverized coal is entered by gasification furnace lower part, belongs to more burner uplink gas.Mesh
The preceding maximum gasification furnace treating capacity of foreign countries is 2000t/d coal, vapor pressure 3.0MPa.This gasification furnace uses water-cooling wall, nothing
Lining of fire brick.Can gasify the coal of high ash melting point, but still need to add lime stone in feed coal and make fluxing agent.
11.GSP dry coal powder pressure gasifying technology
Belong to air flow bed pressurized gasification technology, feed coal is the dry pulverized coal after drying, levigate, and dry pulverized coal is by gas
Change furnace roof portion to enter, belongs to single fire mouth descending system gas.There are water-cooling wall internals in gasification furnace, external maximum GSP gasification furnace is thrown at present
Coal amount is 720t/d lignite.Because using water chilling process, output investment ratio Shell furnace is saved, and is suitable for coal chemical industry and is produced.It is wanted when normal
Burning liquid gas or other fuel gas, in order to light a fire, prevent flame-out and ensure safety in production.
12. double-section dry coal powder pressure gasifying technology
The Coal Gasification Technology with independent intellectual property rights that Xi'an hot working research institute succeeds in developing.Gasifiable coal includes brown
Coal, bituminous coal, meager coal, anthracite and high ash content, high-ash-fusion coal, do not generate tar, phenol etc..Its main feature is that using two sections of gas
Change, the disadvantage is that CH4 content is higher in synthesis gas, it is unfavorable to manufacture synthesis ammonia, methanol, hydrogen.
13. four nozzle opposed type dry powder coal pressure gasification technologies
By East China University of Science, Yanzhou Coal Mining Lunan Chemical Fertilizer Plant (National Research & Engineering Center for Coal Slurry (Gasification) and Coal Chemical Industry) and in
Guo Tian occasion chemico chemical construction corporation works in concert the Coal Gasification Technology with independent intellectual property rights of exploitation.Pilot-plant throws coal ability
For 15~45t/d, it is built in Yanzhou Coal Mining Lunan Chemical Fertilizer Plant.Gasification furnace is hot wall furnace, inner lining refractory block.Dried coal powder is passed through by gasification furnace top
4 burners are added, and gasification furnace is gone out after water Quench of passing through under the synthesis gas of generation.Gasification furnace category air-flow bed coal-gasification furnace.The gasification
Furnace category hot wall furnace differs simultaneously in technical indicator with multiinjector coal water slurry pressurized gasifier suitable for the coal for the low ash smelting point that gasifies
It is less big, but increase the investment and energy consumption of investment and consumption and pressurized nitrogen or the CO2 carrier gas of superheated steam.Colm its
Mechanical strength and thermal stability are poor, and coal enters easily broken after furnace.In addition, the phosphorus content of colm is low, calorific value is low, gangue is more,
Metal impurities are more in ash content, ash content height, sulphur content height, chemical activity difference etc..In these characteristics of colm, mechanical strength is low,
Thermal stability is poor, and ash fusion point is low, and fixed carbon content is low to influence maximum to simple stationary gas producer.
The characteristic of colm determines that there are many shortcomings (including in operating process and makings) in gas-making process.It is main
Want problem to have: gas production is low；It is of poor quality to produce gas；Gas burner resistance is big, not easy to operate；Gas burner is turned over, blows recessed, blowing cave etc..
Entering after furnace the characteristics of occurring is that grieshoch generates and fire bed moves up fast (caused by fixed carbon content is low), and the broken rate height of heat, makes to dry
Carry-over increases (caused by the thermal stability difference of coal).
Summary of the invention
The invention aims to provide a kind of permanently effective environmental protection to utilize low calorific value coal (such as gangue, middle coal, coal slime
Deng) production rock wool, the products such as methanol, solve to realize while environmental issue low calorific value coal recycling, improve coal transformation efficiency,
A kind of process flow of low heat value ammonia from coal, alumina silicate rock wool of the maximized of product added value.
The purpose of the present invention is be achieved through the following technical solutions:
A kind of process flow of low heat value ammonia from coal, alumina silicate rock wool and sulphur, it is characterised in that: including space division list
Member, gasification and melting unit, gasification cooling unit and fume treatment unit,
Raw material is gasified raw material coal, the gasified raw material coal be low calorific value coal, that is, gangue, middle coal, coal slime etc. wherein
It is one or more；
The gasification and melting unit includes that vertical melt of inward turning reaction divides furnace (2) and be connected with rock wool unit, the flue gas
Processing workshop unit is connected with cogeneration unit, sulphur extraction unit and methanol synthesis unit, and the inward turning reaction is vertical
It is molten that furnace (2) is divided to be also connected in air separation unit the oxygen delivery pipeline of oxygen storage tank and big for what is adjusted and supplement
Gas air intlet；
The air separation unit includes air separation unit (1), liquid nitrogen storage tank and oxygen storage tank, air separation unit and coupled
The vertical molten outlet for dividing furnace (2) of coal fusion and gasification device inward turning reaction successively with rock wool unit, gasification refrigerating mechanism (3), extremely cold
Unit (4), cyclone dust removal unit (5), desulfurization unit (6), bag dust removal unit, air-introduced machine, gas chamber are connected, gas chamber with
Methanol synthesis unit is connected, and the liquid nitrogen in the liquid nitrogen storage tank is full of in the vertical molten import department for dividing furnace (2) of inward turning reaction；
In preferred embodiments, the methanol synthesis unit (13) further include gas storage unit (8), compression unit (9),
Converter unit (10), secondary desulfuration unit (11), fine de-sulfur unit (12), methanol synthesis unit (13) react vertical from inward turning
The molten coal gas for dividing output in furnace (2) is down to 40 DEG C or so by compression unit temperature, then enters secondary desulfuration by converter unit
Unit, the converter unit are provided with vapor import, and the coal gas into converter unit is entering smart take off by secondary desulfuration unit
NHD (polyethylene glycol dimethyl ether) decarburization is added before sulphur unit, the methanol converted through methanol synthesis unit (13) enters methanol rectification
Unit (14) further obtains qualified methanol product (CH3OH > 99%), is stored into methanol tank (15)；
In preferred embodiments, the vertical molten liquid slag for dividing furnace unit (5) to export of inward turning reaction is successively in
Between wrap (18), rock wool production unit (19), slag iron separation unit (20) be connected, liquid slag through rock wool production unit (19) produce rock
Cotton product, residue obtain ferroalloy and slag particle after slag iron separation unit (20)；Wherein rock wool production unit includes that rock wool board is raw
Producing line, slag collection slot are taken off and select machine, magnetic separator, slag particle collecting tank and ferroalloy collecting tank；
In preferred embodiments, the vertical molten liquid slag for dividing furnace unit (5) to export of inward turning reaction is successively in
Between wrap (18), rock wool production unit (19), slag iron separation unit (20) be connected, liquid slag through rock wool production unit (19) produce rock
Cotton product, residue obtain ferroalloy and slag particle after slag iron separation unit (20)；Wherein rock wool production unit includes that rock wool board is raw
Producing line, slag collection slot are taken off and select machine, magnetic separator, slag particle collecting tank and ferroalloy collecting tank；
In preferred embodiments, the high-temperature vapour that gasification cooling unit (3) generates is through cogeneration unit
(16) supplement plant area's industrial production electricity consumption is produced electricl energy, the cogeneration unit includes vapor delivery pipe, steam turbine and hair
Motor；
In preferred embodiments, the desulfurization unit (6) and secondary desulfuration unit (11), fine de-sulfur unit (12) produce
Raw sulfur-rich foam produces sulphur through sulphur extraction unit (21)；
In preferred embodiments, the cyclone dust removal unit (5) connect corresponding with bag dust removal unit (7)
Flying dust collector unit, the flying dust that cyclone dust removal unit is collected are sent into vertical melt of inward turning reaction and furnace unit (5) are divided to carry out innoxious place
Reason, the flying dust that bag dust removal unit is collected may be used as rubber additive；
In preferred embodiments, the sulphur extraction unit includes liquid seal trough, rich solution slot, regeneration tank, lean liquid tank, then
Raw slot, above-mentioned apparatus are sequentially connected, and wherein regeneration tank successively connects with upper foam tank, vacuum filter, underground tank, molten-bath again
It connects, molten-bath produces sulphur via casting film device, and the supernatant in the upper foam tank is again introduced into rich solution slot through diversion trench
It is handled, liquid again returns to desulfurizing tower via intake chute and handled in the lean liquid tank；
In preferred embodiments, liquid again returns to desulfurizing tower via intake chute and is handled in the lean liquid tank
One or more mixtures of the substances such as Shi Tianjia sodium carbonate (Na2CO3) sig water, inclined sodium vanadate (NaVO3), oxygenated vegetable tannin extract into
Row adjustment；
Gas total sulfur content≤0.1ppm after fine de-sulfur cell processing in preferred embodiments；
A kind of low heat value ammonia from coal, alumina silicate rock wool implementation method, comprising the following steps:
(1), the oxygen that raw material gangue, air separation unit (1) provide enters that inward turning reaction is vertical molten to divide furnace (2) to produce
Coal gas, gas pressure about 0.02Mpa；Coal gas is through cooling unit (3), extremely cold unit (4), cyclone dust removal unit (5), desulfurization of gasifying
Unit, bag dust removal unit (7) to gas storage unit (8) gas storage unit, that is, gas chamber；Coal gas arrives after once desulfurization unit (6)
Gas compression unit (9) is forced into 2.1Mpa, and then transformed unit (10) adjusts hydrogen-carbon ratio, and conversion gas is through secondary desulfuration, de-
Enter synthesic gas compressor after carbon unit (11) fine de-sulfur unit (12) and be forced into 5.8MPa to go methanol synthesis unit (13), generate
Crude carbinol final products methanol is obtained after three-tower rectification unit (14), methanol purge gas returns to dress after pressure-variable adsorption mentions hydrogen
It sets；
(2), the sulfur-rich foam that desulfurization unit (6) and secondary desulfuration unit (11), fine de-sulfur unit (12) generate is through sulphur
Extraction unit (21) produces sulphur；
(3), vertical melt of inward turning reaction divides the liquid slag of furnace unit (5) output successively to pass through tundish (18), rock wool production
Unit (19) produces rock wool product, and residue obtains ferroalloy and slag particle after slag iron separation unit (20)；
(4), the high-temperature vapour that gasification cooling unit (3) generates produces electricl energy supplement plant area's work through cogeneration unit (16)
Industry productive power.
The invention has the benefit that
Inward turning reaction equation melts the characteristics of dividing furnace:
1, the calorific value for entering kiln material be not achieved can be added when the calorific value requirement of melting high heating value material such as inferior grade coke,
Compared with coal, the tire etc. of high heating value.
2, due to mobile slow, the synthesis gas dustiness that reducing zone extracts is less than 100mg/m3.
3, the oxidized metal in coal is reduced to useful zero-valent metal and recycles.
4, low calorific value coal pyrolytic gasification melting process carries out under tiny structure, and poisonous and hazardous any gaseous state object will not be discharged
Matter has little effect environment.
5, production process does not have any harmful waste water to discharge.
6, using in kiln add lime stone depickling (lime stone additive amount depend on low calorific value coal, gangue (bone coal) and
The sulfur-bearing situation of combustion-supporting fuel)
7, using classification for air (or oxygen).Oxygen content 34% is used in most next stage (slag section) using when air
Air, so there is no need to large-scale space division device is arranged.
8, low calorific value coal such as gangue (bone coal) is without broken.
9, the carbon content of slag is almost nil；Clinker glass, it is nontoxic；Vitrified clinker is convenient for comprehensive utilization.
10, investment and operating cost are lower；The metal of reduction can be sold outside.
Inward turning vertical type kiln uses slag tap mode, and after the reacted gasification of the low calorific value coals such as gangue, melt is by anti-
It answers device lower part stream material mouth to flow out, is imported into centrifuge through movable chute after separation liquid alloy, manufactures rock wool after the separation of slag ball.
The gas of inward turning vertical type kiln output through Vaporizing cooling, extremely cold tower, cyclone dust removal, desulfurization, bag-type dust, purification
Processes synthesizing methanols such as (transformation, wet desulphurization, dry desulfurization, decarburization, fine de-sulfurs).
It is an object of the present invention to the low calorific value coals not high using the gasification&melting technology a large amount of utilization rates existing to China
Equal solid-state castoffs carry out harmless treatment, solve by-product gas while problem of environmental pollution and produce methanol, gasification furnace melting
Slag produces rock wool, and the sulfur-rich foam of desulfurization unit institute output can carry out sulfur cream, improves resource utilization, turns waste into wealth.
Detailed description of the invention
Below according to attached drawing, invention is further described in detail.
Fig. 1 is a kind of process flow of low heat value ammonia from coal, alumina silicate rock wool and sulphur described in the embodiment of the present invention
Total figure.
Fig. 2 is air separation unit amplification in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Figure.
Fig. 3 is gasification and melting unit in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Enlarged drawing.
Fig. 4 is fume treatment unit in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Enlarged drawing.
Fig. 5 be in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur with human hair electric unit
Enlarged drawing.
Fig. 6 is rock wool production unit in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Enlarged drawing.
Fig. 7 is sulphur extraction unit in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Enlarged drawing.
Fig. 8 is methanol synthesis unit in the process flow total figure of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur
Enlarged drawing.
A kind of low heat value ammonia from coal of Fig. 9, alumina silicate rock wool and sulphur process flow diagram.
In figure: 1. air separation units；2. inward turning reaction equation is molten to divide furnace unit；3. gasify cooling unit；4. extremely cold unit；5. rotation
Wind dust removing units；6. desulfurization unit；7. bag dust removal unit；8. gas storage unit；9. compression unit；10. converter unit；11. two
Secondary desulfurization unit；12. fine de-sulfur unit；13. methanol synthesis unit；14. methanol rectification unit；15. methanol storage element；16.
Cogeneration unit；17. flying dust collector unit；18. tundish unit；19. rock wool production unit；20. slag iron separation unit；
21. sulphur extraction unit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The present invention is further illustrated with specific embodiment below with reference to accompanying drawings.
As shown in figures 1-8, a kind of process flow of low heat value ammonia from coal, alumina silicate rock wool, including air separation unit (1) with
And coupled coal fusion and gasification device inward turning reaction equation melts and divides furnace (2), the coal fusion and gasification device inward turning reaction equation is molten
The outlet of point furnace unit (2) successively with gasification refrigerating mechanism (3), extremely cold unit (4), cyclone dust removal unit (5), desulfurization unit
(6), bag dust removal unit (7), gas storage unit (8), compression unit (9), converter unit (10), secondary desulfuration unit (11), essence
Desulfurization unit (12), methanol synthesis unit (13) are connected, and the methanol converted through methanol synthesis unit (13) enters methanol rectification list
First (14) further obtain qualified methanol product (CH3OH > 99%), into methanol tank (15).
The molten liquid slag for dividing furnace unit (5) to export of the inward turning reaction equation successively with tundish (18), rock wool production unit
(19), slag iron separation unit (20) is connected, and liquid slag produces rock wool product through rock wool production unit (19), and residue is through slag iron point
From obtaining ferroalloy and slag particle after unit (20).
The high-temperature vapour that the Vaporizing cooling unit (3) generates produces electricl energy supplement plant area's work through cogeneration unit (16)
Industry productive power.
The sulfur-rich foam that the desulfurization unit (6) and secondary desulfuration unit (11), fine de-sulfur unit (12) generate is through sulphur
Extraction unit (21) produces sulphur.
The cyclone dust removal unit (5) connect flying dust collector unit (17) with bag dust removal unit (7), unified to collect flying dust
Being sent into inward turning reaction equation and melting divides furnace unit (5) to carry out harmless treatment.
Poly-generation method of the present invention as shown in Figure 9, comprising the following steps:
1) inward turning reaction equation is added and is melted by the low calorific value coals mixing such as gangue, middle coal, coal slime lime stone, coke and divide furnace unit
(2) in, it is converted into coal gas with the oxygen-enriched generation gasification reaction of air separation unit (1) input, by gasification cooling unit (3), extremely cold
Unit (4), cyclone dust removal unit (5), bag dust removal unit (7) to gas storage unit (8).It obtains rich in hydrogen and carbon monoxide
Raw gas.
2) add after once desulfurization unit (6) to gas compression unit (9) after the raw gas rich in hydrogen and carbon monoxide
Being depressed into 2.1Mpa, then transformed unit (10) adjusts hydrogen-carbon ratio, and conversion gas is through secondary desulfuration, decarburization unit (11) fine de-sulfur list
Enter synthesic gas compressor after first (12) and be forced into 5.8MPa to go to methanol synthesis unit (13).
3) gas for going out synthesic gas compressor group is warming up to 220 DEG C through gas-gas heat exchanger heat exchange, into methanol synthesis unit
(13), methanol synthesis reaction is carried out under the effect of the catalyst, and off-gas goes pressure swing adsorption hydrogen production device making pure hydrogen to return to system
System, desorption pneumatic transmission supplementary fired Waste Heat Boiler make fuel.The crude carbinol of generation obtains final products after three-tower rectification unit (14)
Methanol.
4) the sulfur-rich foam that desulfurization unit (6) is generated with secondary desulfuration unit (11), fine de-sulfur unit (12) is mentioned through sulphur
Unit (21) are taken to produce sulphur.
5) inward turning reaction equation is molten divides the liquid slag of furnace unit (5) output successively to pass through tundish (18), rock wool production unit
(19) rock wool product is produced, residue obtains ferroalloy and slag particle after slag iron separation unit (20).
Finally, it should be noted that above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to part of or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. a kind of process flow of low heat value ammonia from coal, alumina silicate rock wool and sulphur, it is characterised in that: including air separation unit,
Gasification and melting unit, gasification cooling unit and fume treatment unit,
Raw material is gasified raw material coal, and the gasified raw material coal is the one of which of low calorific value coal, that is, gangue, middle coal, coal slime etc.
Or it is a variety of；
The gasification and melting unit includes that vertical melt of inward turning reaction divides furnace (2) and be connected with rock wool unit, at the flue gas
Reason workshop unit is connected with cogeneration unit, sulphur extraction unit and methanol synthesis unit, and the inward turning reaction is vertical molten
Furnace (2) are divided to be also connected with the oxygen delivery pipeline of oxygen storage tank and the atmosphere for adjusting and supplementing in air separation unit
Air intlet；
The air separation unit includes air separation unit (1), liquid nitrogen storage tank and oxygen storage tank, and air separation unit and coupled coal are molten
Melt the vertical molten outlet for dividing furnace (2) of gasification installation inward turning reaction successively with rock wool unit, gasification refrigerating mechanism (3), extremely cold unit
(4), cyclone dust removal unit (5), desulfurization unit (6), bag dust removal unit, air-introduced machine, gas chamber are connected, gas chamber and methanol
Synthesis unit is connected, and the liquid nitrogen in the liquid nitrogen storage tank is full of in the vertical molten import department for dividing furnace (2) of inward turning reaction.
2. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 1, feature
Be: the methanol synthesis unit (13) further includes gas storage unit (8), compression unit (9), converter unit (10), secondary desulfuration
Unit (11), fine de-sulfur unit (12), methanol synthesis unit (13), from the vertical molten coal gas for dividing output in furnace (2) of inward turning reaction
40 DEG C or so are down to by compression unit temperature, then secondary desulfuration unit, the converter unit setting are entered by converter unit
There is vapor import, the coal gas into converter unit adds NHD (poly- second two before entering fine de-sulfur unit by secondary desulfuration unit
Diethylene glycol dimethyl ether) decarburization, the methanol converted through methanol synthesis unit (13) enters methanol rectification unit (14) and further obtains qualification
Methanol product (CH3OH > 99%), stored into methanol tank (15).
3. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 1, feature
Be: the vertical molten liquid slag for dividing furnace unit (5) to export of inward turning reaction successively with tundish (18), rock wool production unit
(19), slag iron separation unit (20) is connected, and liquid slag produces rock wool product through rock wool production unit (19), and residue is through slag iron separation
Unit obtains ferroalloy and slag particle after (20)；Wherein rock wool production unit includes rock wool board assembly line, slag collection slot, takes off choosing
Machine, magnetic separator, slag particle collecting tank and ferroalloy collecting tank.
4. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 1, feature
Be: the high-temperature vapour that gasification cooling unit (3) generates produces electricl energy the industry of supplement plant area through cogeneration unit (16)
Productive power, the cogeneration unit include vapor delivery pipe, steam turbine and generator.
5. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 2, feature
Be: the sulfur-rich foam that the desulfurization unit (6) generates with secondary desulfuration unit (11), fine de-sulfur unit (12) is extracted through sulphur
Unit (21) produces sulphur.
6. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 1, feature
Be: the cyclone dust removal unit (5) connect corresponding flying dust collector unit, cyclone dust removal with bag dust removal unit (7)
The flying dust that unit is collected is sent into vertical melt of inward turning reaction and furnace unit (5) is divided to carry out harmless treatment, what bag dust removal unit was collected
Flying dust may be used as rubber additive.
7. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 1, feature
Be: the sulphur extraction unit includes liquid seal trough, rich solution slot, regeneration tank, lean liquid tank, regeneration tank, and above-mentioned apparatus is sequentially connected,
Wherein regeneration tank is sequentially connected with upper foam tank, vacuum filter, underground tank, molten-bath again, and molten-bath is raw via casting film device
Sulphur is produced, the supernatant in the upper foam tank is again introduced into rich solution slot through diversion trench to be handled, liquid in the lean liquid tank
Body again returns to desulfurizing tower via intake chute and is handled.
8. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 7, feature
Be: in the lean liquid tank liquid via intake chute again return to when desulfurizing tower is handled add sodium carbonate (Na2CO3) it is dilute
One or more mixtures of the substances such as lye, inclined sodium vanadate (NaVO3), oxygenated vegetable tannin extract are adjusted.
9. the process flow of a kind of low heat value ammonia from coal, alumina silicate rock wool and sulphur according to claim 2, feature
It is: gas total sulfur content≤0.1ppm after fine de-sulfur cell processing.
10. the implementation method of a kind of low heat value ammonia from coal, alumina silicate rock wool, it is characterised in that: the following steps are included:
(1), the oxygen that raw material gangue, air separation unit (1) provide enter inward turning reaction it is vertical it is molten divide furnace (2) to produce coal gas,
Gas pressure about 0.02Mpa；Coal gas through gasification cooling unit (3), extremely cold unit (4), cyclone dust removal unit (5), desulfurization unit,
Bag dust removal unit (7) is to gas storage unit (8) gas storage unit, that is, gas chamber；Coal gas arrives coal gas pressure after once desulfurization unit (6)
Contracting unit (9) is forced into 2.1Mpa, and then transformed unit (10) adjusts hydrogen-carbon ratio, and conversion gas is through secondary desulfuration, decarburization unit
(11) enter synthesic gas compressor after fine de-sulfur unit (12) and be forced into 5.8MPa and remove methanol synthesis unit (13), the crude carbinol of generation
Final products methanol, methanol purge gas return mechanism after pressure-variable adsorption mentions hydrogen are obtained after three-tower rectification unit (14)；
(2), the sulfur-rich foam that desulfurization unit (6) is generated with secondary desulfuration unit (11), fine de-sulfur unit (12) is extracted through sulphur
Unit (21) produces sulphur；
(3), vertical melt of inward turning reaction divides the liquid slag of furnace unit (5) output successively to pass through tundish (18), rock wool production unit
(19) rock wool product is produced, residue obtains ferroalloy and slag particle after slag iron separation unit (20)；
(4), the high-temperature vapour that gasification cooling unit (3) generates produces electricl energy supplement plant area's industry life through cogeneration unit (16)
Produce electricity consumption.
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Cited By (1)
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| CN109847394A (en) * | 2019-03-28 | 2019-06-07 | 湖北三宁化工股份有限公司 | A kind of system and method that ethylene glycol rectifier unit process waste recycles |
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| CN109847394A (en) * | 2019-03-28 | 2019-06-07 | 湖北三宁化工股份有限公司 | A kind of system and method that ethylene glycol rectifier unit process waste recycles |
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