CN109280560A - A kind of coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification - Google Patents
A kind of coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification Download PDFInfo
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- CN109280560A CN109280560A CN201710636713.0A CN201710636713A CN109280560A CN 109280560 A CN109280560 A CN 109280560A CN 201710636713 A CN201710636713 A CN 201710636713A CN 109280560 A CN109280560 A CN 109280560A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
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- C—CHEMISTRY; METALLURGY
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- C—CHEMISTRY; METALLURGY
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1643—Conversion of synthesis gas to energy
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- C—CHEMISTRY; METALLURGY
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1656—Conversion of synthesis gas to chemicals
- C10J2300/1659—Conversion of synthesis gas to chemicals to liquid hydrocarbons
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- C—CHEMISTRY; METALLURGY
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1656—Conversion of synthesis gas to chemicals
- C10J2300/1665—Conversion of synthesis gas to chemicals to alcohols, e.g. methanol or ethanol
-
- C—CHEMISTRY; METALLURGY
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention provides a kind of coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification, including standby coal unit, pyrolysis-gasification coupling system A and polygenerations systeme B；The polygenerations systeme B includes the purification coal gas separative unit connecting with pyrolysis unit purification gas exit；The purification tar separation unit being connect with pyrolysis unit purification tar outlet；The chemical products synthesis unit and IGCC unit connected respectively with the outlet of gasification unit purification gasification gas；Purification tar separation unit is connected with coal tar hydrorefining unit and oil product separative unit in turn.The coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification of the invention, coal pyrolysis gasification and the production process of oil, gas, change, electricity, heat are organically combined, realize that substance conversion and energy convert integrated, reach the maximization of the classified utilization, value promotion, utilization efficiency and economic benefit of coal resources, improves efficiency of energy utilization.
Description
Technical field
The invention belongs to technical field of coal chemical industry, it is related to specifically relating to using coal pyrolysis gasification as the polygenerations systeme of core
And a kind of coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification.
Background technique
China is the country of " oil-poor, few gas, coal resources relative abundance ".But coal utilization is constantly in a kind of single hair
Exhibition coal production, do not focus on coal comprehensive utilization unreasonable industrial pattern, electric power, chemical industry and other industry technical matters,
It is unreasonable in deficiency and product structure in installations and facilities, cause China the energy consumption per unit of output value be developed country 3-4
Times.With the increase of coal consumption, the environmental problem faced is more and more.In addition, interdependency of the China to former oil and gas
Also increase year by year.Therefore seek resource consumption is few, efficient energy conversion is high, oil gas high income, semicoke quality are good, product benefit most
Bigization, energy-saving and emission-reduction coal comprehensively utilize route, be of great significance to China's energy strategy.
Poly-generation technology using coal co-producing power, chemical products and liquid fuel etc. is economy, clean utilization coal
One of important channel.The major technique direction of Poly-generation can be divided into following several classes: (1) heat based on pyrolysis of coal at present
Electrical Poly-generation technology；(2) the thermoelectricity gas Poly-generation technology based on coal partial gasification；(3) based on being gasified totally by coal
Thermoelectricity gas Poly-generation technology.Leading at present to be applied is pyrolysis and combustion Poly-generation technology.
Thermoelectricity gas Poly-generation based on coal part (or complete) gasification, which is mainly disadvantageous in that, accounts for about coal total amount
The high added value tar ingredients almost all of 4-12% is converted into coal gas, is not inconsistent with coal oil theory, and it is poor to be unfavorable for improvement China
Oily status, coal comprehensive utilization ratio are low.The technology of main development is heat carrier pyrolysis technology and circulating fluidized bed combustion at present
The polygenerations systeme that technology combines, but the coal gas obtained is mainly based on dry distillation gas, so gas yield is relatively low, calorific value
Not high, tar yield is low, in addition current China's combustion technology low SI, low efficiency, and environmental benefit is low, energy cannot recycle
It utilizes, limits the further raising of system coal utilization efficiency.Therefore at present coal utilization that there are efficiency of energy utilization is low,
The problems such as tar yield is low, pyrolysis gas poor quality and pyrolysis char utilization are difficult, environmental protection, is not achieved energy-saving and emission-reduction, raw material and production
Product scheme flexibly, the maximum Poly-generation purpose of product benefit.
Summary of the invention
Present invention aims to overcome that prior art defect provides a kind of coupling integrated Poly-generation of coal chemical industry pyrolytic gasification
System solves the problems, such as current coal utilization there are efficiency of energy utilization low, pyrolysis char using difficult, realize oil, gas, change,
The reasonable disposition of electricity, heat, achievees the purpose that energy-saving and emission-reduction, product benefit are big.
To achieve the above object, the invention adopts the following technical scheme:
A kind of coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification, including standby coal unit, pyrolytic gasification coupled system A
With polygenerations systeme B；The pyrolytic gasification coupled system A includes being coupled in integrated pyrolysis unit and gasification unit, and pyrolysis is single
Member includes raw coal entrance, purification gas exit, purification tar outlet and semicoke outlet, and gasification unit includes that purification gasification gas goes out
Mouth, lime-ash outlet and gasification agent inlet；The polygenerations systeme B includes the purification coal connecting with pyrolysis unit purification gas exit
Gas separative unit, and the purification tar separation unit that connect of pyrolysis unit purification tar outlet, respectively with gasification unit purified gas
Change the chemical products synthesis unit and IGCC unit of gas outlet connection；Purification tar separation unit is connected with coal tar hydrogenating in turn
Refined unit and oil product separative unit.
The purification coal gas separative unit outlet and H2The connection of separative unit entrance, H2Separative unit outlet adds with coal tar
The connection of hydrogen refined unit.
The polygenerations systeme B include oil product reconcile unit, the chemical products synthesis unit include F- T synthesis unit,
Alcohols synthesis unit and carbonylation synthesis unit, oil product reconciliation unit connect with oil product separative unit and F- T synthesis unit respectively
It connects.
The polygenerations systeme B include oil product reconcile unit, the chemical products synthesis unit include F- T synthesis unit,
Alcohols synthesis unit and carbonylation synthesis unit, oil product reconciliation unit connect with oil product separative unit and F- T synthesis unit respectively
It connects.
The pyrolysis unit includes pyrolysis oven, and pyrolysis oven gas vent is sequentially connected the first gas-solid separator, gas-liquid separation
Device, electrical tar precipitator and first gas clarifier, the outlet of first gas clarifier are connect with purification coal gas separative unit；Gas-liquid point
It is sequentially connected oil water separator and type tar purifier from device liquid outlet, type tar purifier outlet connects with purification tar separation unit
It connects；The outlet of pyrolysis oven semicoke is connect with semicoke splitter inlet, and the outlet of semicoke current divider is connected with quenching paralysis facility entrance；
The gasification unit includes gasification furnace, and gasification furnace gas vent is connected with the second gas-solid separator and the second gas in turn
Body clarifier, the outlet of second gas clarifier are connect with chemical products synthesis unit and IGCC unit respectively；Semicoke current divider goes out
Mouth is divided into two-way, is connected all the way with quenching paralysis facility entrance, another way is connect with gasification furnace semicoke entrance.
The first gas clarifier outlet is divided into two-way, connect all the way with purification coal gas separative unit, another way and heat
Solve the connection of furnace heated carrier gas entrance.
Including standby coal unit, the gasification furnace is provided with raw coal entrance, standby coal unit respectively with gasification furnace raw coal entrance and
Pyrolysis unit raw coal entrance is connected.
The gasification furnace is provided with raw coal entrance, and gasification furnace raw coal entrance is connected with standby coal unit.
The coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification of the invention, is gasified with low temperature pyrogenation-in coal as core
The heart, pyrolysis char solve the problems, such as semicoke using difficulty, by coal pyrolysis gasification and oil, gas, change, electricity, heat as gasified raw material
Production process organically combined, realize the integrated of substance conversion and energy conversion, reach classified utilization, the valence of coal resources
Value promotion, the maximization of utilization efficiency and economic benefit, improve efficiency of energy utilization, and raw material can be with flexible utilization for producing not
With product, while realize oil, gas, change, electricity, heat reasonable disposition, achieve the purpose that energy-saving and emission-reduction, product benefit are big, reduction
Process flow and investment running cost, while can also accomplish that coal utilization process environment is friendly, it achieves energy-saving and emission reduction purposes.
The present invention contains multi-product coproduction (oil, gas, change, electricity, heat) to the maximum extent, have energy resources integrated complementary,
Product flexibility, high value-added and the high market demand change the features such as adaptability, can to the maximum extent turn substance and energy
Change process and pollutant catabolic gene process integration, with low energy consumption, the discharge of poisonous waste control of low cost and pollution minimization
Etc. potentiality.
Detailed description of the invention
Fig. 1 is the system structure diagram of the embodiment of the present invention one.
Fig. 2 is the structural block diagram of pyrolytic gasification coupling unit in Fig. 1.
Fig. 3 is the system structure diagram of the embodiment of the present invention two.
Fig. 4 is the structural block diagram of pyrolytic gasification coupling unit in Fig. 3.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment one:
As shown in Figure 1, the present invention includes standby coal unit 1, pyrolysis-gasification coupling system A and polygenerations systeme B.
Pyrolysis-gasification coupling system A includes being coupled in integrated pyrolysis unit 2, gasification unit 8, and wherein pyrolysis unit is such as
Shown in attached drawing 2, including pyrolysis oven 13, the first gas-solid separator 14, gas-liquid separator 15, oil water separator 16, type tar purifier
17, electrical tar precipitator 18, first gas clarifier 19, semicoke current divider 20 and quenching paralysis facility 21；Gasification unit includes gas
Change furnace 22, the second gas-solid separator 23 and second gas clarifier 27.It is as shown in Fig. 2 between each component to be connected by pipeline
It connects, two output ends of specific pyrolysis oven 13 are connected to the input terminal and semicoke of the first gas-solid separator 14 by pipeline
The input terminal of current divider 20, the output end of the solid-state isolate of the first gas-solid separator 14 is by piping connection in semicoke current divider
20 input terminal, the output end of the gaseous state isolate of the first gas-solid separator 14 is by piping connection in the defeated of gas-liquid separator 15
Enter end, the output end of the gaseous state isolate of gas-liquid separator 15 is by piping connection in the input terminal of electrical tar precipitator 18, electric fishing
The output end of tar device 18 is by piping connection in the input terminal of first gas clarifier 19, the Liquid segregation of gas-liquid separator 15
For the output end of object by piping connection in the input terminal of oil water separator 16, the tar output end of oil water separator 16 passes through pipeline
It is connected to the input terminal of type tar purifier 17, two shunting output ends of semicoke current divider 20 are connected to quenching by pipeline
The input terminal of paralysis facility 21 and the input terminal of gasification furnace 22, the output end of gasification furnace 22 is by piping connection in the second gas-solid point
Input terminal from device 23, the output end of the second gas-solid separator 23 are connected to the input terminal and of pyrolysis oven 13 by pipeline
The input terminal of two gas purifiers 27.
Pyrolytic gasification coupled systemes A process flow is as follows:
Raw coal is in standby coal unit 1, through washing screening, drying or through series of preprocessing (different atmosphere, swelling treatment
Deng), obtain the feed coal a for being able to satisfy technique requirement.Feed coal a is sent into pyrolysis oven 13, former under the conditions of 500 DEG C~800 DEG C
Expect that coal a carries out pyrolytic reaction.Contain CO, H from 13 top output of pyrolysis oven2、CH4、CO2、O2、H2S, the famine of the components such as tar, coke breeze
Coal gas, in pyrolysis furnace bottom output pyrolysis char.The raw coke oven gas that pyrolysis oven 13 generates is sent into the first gas-solid separator 14, carries out waste
The dedusting of coal gas.It isolates coke breeze through the first gas-solid separator 14 to return in feeding semicoke current divider 20, for subsequent semicoke
Comprehensively utilize link.The dedusting coal gas isolated through the first gas-solid separator 14 is sent into gas-liquid separator 15, separates outlet through it
State product and liquid product, gaseous products therein are sent into electrical tar precipitator 18 further remove wherein remaining tar after,
It is sent into first gas clarifier 19 and removes the gaseous impurity of the components such as nitrogen, sulphur, be purified coal gas b, liquid product therein
It is sent into oil water separator 16 and carries out water-oil separating, the tar isolated is sent into type tar purifier 17, and further purification is purified
Tar c.The moisture isolated through oil water separator 16 can be recycled for industrial water after processing, basic to realize zero sewage
Discharge.Coal gas b and purification tar c are purified, polygenerations systeme B is respectively fed to, according to feedstock property and product needs, is carried out subsequent
Processing.
Part heat after the pyrolysis char obtained from 13 bottom of pyrolysis oven is sent into semicoke current divider 20 by pipeline, after shunting
It solves semicoke and is sent into quenching paralysis facility 21, the semicoke raw material d that can directly utilize is obtained after quenching, Passivation Treatment, through semicoke point
Flow partial thermal decomposition semicoke and gasifying agent g (O after device 20 shunts2, air or vapor etc.) be sent into gasification furnace 22 together, 800
~1300 DEG C of ranges carry out char Gasification reaction, and the gasification gas come out through gasification furnace 22 (contains CO, H2、CO2、CH4、O2、H2S, lime-ash
Deng) it is sent into the second gas-solid separator 23, the lime-ash isolated through the second gas-solid separator 23 and gasification furnace 22 are remaining after gasifying
Lime-ash is sent into polygenerations systeme B as the raw material lime-ash f of processing and utilization, carries out following process.Through the second gas-solid separator 23
Dedusting gasification gas after dust separation, a small part are sent into pyrolysis oven 13, provide the heat that pyrolysis needs, remaining is sent into second gas
Body clarifier 27, removes the gas of the components such as sulfur-bearing, nitrogen, and purified obtained purification gasification gas e is sent into polygenerations systeme B, uses
In the production of subsequent chemicals, oil product, electric power etc..
Part heat after the pyrolysis char obtained from 13 bottom of pyrolysis oven is sent into semicoke current divider 20 by pipeline, after shunting
It solves semicoke and is sent into quenching paralysis facility 21, the semicoke raw material d that can directly utilize is obtained after quenching, Passivation Treatment, through semicoke point
Flow partial thermal decomposition semicoke and gasifying agent g (O after device 20 shunts2, air or vapor etc.) be sent into gasification furnace 22 together, 800
~1300 DEG C of ranges carry out char Gasification reaction, and the gasification gas come out through gasification furnace 22 (contains CO, H2、CO2、CH4、O2、H2S, lime-ash
Deng) it is sent into the second gas-solid separator 23, the lime-ash isolated through the second gas-solid separator 23 and gasification furnace 22 are remaining after gasifying
Lime-ash is sent into polygenerations systeme B as the raw material lime-ash f of processing and utilization, carries out following process.Through the second gas-solid separator 23
Dedusting gasification gas after dust separation, a small part are sent into pyrolysis oven 13, provide the heat that pyrolysis needs, remaining is sent into second gas
Body clarifier 27, removes the gas of the components such as sulfur-bearing, nitrogen, and purified obtained purification gasification gas e is sent into polygenerations systeme B, uses
In the production of subsequent chemicals, oil product, electric power etc..
In order to further increase the cyclic utilization rate of system thermal, realize the flexibility of Poly-generation products scheme, the present invention
The part dedusting separated through the second gas-solid separator 23 is gasified into gas by pipeline importing pyrolysis oven 13, with circulation supply heat
Solve the heat needed.In addition, purification coal gas b can also be sent into pyrolysis oven 13 through pipeline after processing, solve because gasification is insufficient or
Gasification gas is mainly used for Poly-generation and causes the problem of pyrolysis oven heat supply deficiency.
It, can be by raw coal through standby in order to further widen the scope of application of coal, improve the flexibility of Poly-generation products scheme
The processing of coal unit 1 obtains the qualified raw material for gasification, is sent into gasification furnace 22 by pipeline, separately as gasified raw material or
Participate in char Gasification.The present invention can combine the flexibility of raw material and products scheme.
It is also an advantage of the invention that because gasification gas contains H2、CH4Deng the activating component for being conducive to be pyrolyzed, it can be achieved that feed coal
With the copyrolysis of the activating components such as hydrogeneous, improves tar yield, improves semicoke quality.Because being made with char Gasification gas or purification coal gas
For the heat carrier of pyrolysis oven, it is pyrolyzed in coal gas and is practically free of N2, pyrolysis calorific value of gas is high, quality is good.The work of present invention pyrolysis simultaneously
Skill is flexible, hydrogen or catalyst can be being added in pyrolysis oven, realize hydropyrolysis or hydrogenation catalyst pyrolysis.
Polygenerations systeme B mainly includes purification coal gas separative unit 3, H2Separative unit 4, purification tar separation unit 5, coal
Hydrogenation of tar refined unit 6, oil product separative unit 7, F- T synthesis unit 9, alcohols synthesis unit 10, carbonylation synthesis unit
11, IGCC (Integrated Gasification Combined Cycle integrated gasification combined cycle for power generation system) unit
The links such as 12 and oil product reconciliation unit 24.It is as shown in Fig. 1 between each component to be connected by pipeline, specific Poly-generation system
The input terminal of the purification coal gas separative unit 3 of system B is defeated in pyrolysis-gasification coupling unit (A) purification coal gas b by piping connection
Outlet is specifically connected to the output end of first gas clarifier 19 therein.The input terminal of purification tar separation unit 5 passes through
Piping connection is specifically connected to tar purifying therein in the output end of pyrolysis-gasification coupling unit (A) purification tar c
The output end of device 17.The output end of purification tar separation unit 5 is connected to the input of coal tar hydrorefining unit 6 by pipeline
End；Coal tar hydrorefining unit 6 is connected to H by pipeline2(pressure-variable adsorption or UF membrane etc. can be used) in separative unit 4
Output end and oil product separative unit 7 input terminal；F- T synthesis unit 9, alcohols synthesis unit 10, carbonylation synthesis unit 11
And the input terminal of IGCC unit 12 is connected to pyrolysis-gasification coupling unit A purification gasification gas output end e by pipeline,
Specifically it is connected to the output end of second gas clarifier 27.Oil product reconcile unit 24 input terminal by pipeline respectively with Fischer-Tropsch
Synthesis unit 9 is connected with the product that oil product separative unit 7 obtains.
Polygenerations systeme B process flow is as follows:
Pyrolysis-gasification coupling system A output purification coal gas b is sent into the purification coal gas point of polygenerations systeme B by pipeline
3 pairs from unit purification coal gas different components separate, and isolate CH4, CO2With synthesis gas CO, H2Etc. different components.CO2With
In dimethyl carbonate/degradation plastic etc.；Methane is for LNG (liquefied gas) etc..CO and H2A part for synthesize ammonia, urea and
The products such as ammonium bicarbonate, a part is through H2Separative unit 4 (pressure-variable adsorption or UF membrane etc. can be used) isolates H2, H2It is sent into coal tar
Hydrofinishing unit 6, as part H2Source.
Pyrolysis-gasification coupling system A output purification tar c is sent into purification tar separation unit 5 by pipeline, isolates
The light components such as phenols, aromatic hydrocarbons and heavy component asphalitine.Production, following process of the light components for phenols and BTX, heavy
Component is for synthesizing carbon materials etc..It isolates light, heavy constituent coal tar and is sent into coal tar hydrorefining unit 6, be used for coal
The hydrofinishing and processing of tar, part of H2From the H through pressure-variable adsorption or UF membrane etc.2Separative unit 4.Through coal tar
The mixing oil product obtained after oily hydrofinishing unit 6 is sent into oil product separative unit 7, obtains stone brain after the modes such as rectifying are handled
The oil products such as oil, fuel oil (gasoline, diesel oil etc.).In order to be saturated the alkene in coal tar, the impurity such as removing sulphur, nitrogen, oxygen improve and
Oil product color is improved, Cetane number and high-stability are improved, high water resistance, anti-coking and high denitrification activity hydrofinishing catalysis is added
Agent.The a part such as the hydrogenated naphtha being refining to obtain of coal tar, gasoline, diesel oil can be used directly as fuel or solvent, right
When oil quality requires high, naphtha, gasoline, diesel oil etc. and the oil product obtained through F- T synthesis are sent into oil product reconciliation unit 24, obtain
To high-quality liquid fuel, to meet higher demand.
The pyrolysis char of pyrolysis-gasification coupling system A pyrolysis unit 2 output can be directly sharp after quenching, Passivation Treatment
Raw material semicoke d is mainly used for calcium carbide industry, synthesizes BDO/PBT, it can also be used to ferroalloy, blast furnace blowing, high-efficiency adsorbent,
Power generation, domestic fuel or gasified raw material etc..
The purification gasification gas e of pyrolysis-gasification coupling system A gasification unit 8 output, a part are used for the production of chemicals
It mainly include alcohols synthesis unit 10, carbonylation synthesis unit 11, other chemical products；A part (is taken for oil product synthesis
Hold in the palm synthesis unit 9)；A part is for generating electricity (IGCC unit 12).Purification gasification gas e is sent into alcohols synthesis unit 10, through difference
Processing mode obtains methanol, ethylene glycol, mixed alcohol etc..Purification gasification gas e is sent into carbonylation unit 10, and synthesis obtains acetic acid etc..
In addition, purification gasification gas e is sent into different processing according to the quality of purification gasification gas e and to the different demands of Poly-generation product
Unit produces other chemical products.Purification gasification gas e is sent into F- T synthesis unit 9, adds through F-T synthetic oil with coal tar
Naphtha, gasoline, the diesel oil etc. obtained after the processing of hydrogen refined unit 6 reconciles, and obtains high-quality liquid fuel, alleviates crude oil in China
Pressure.Purification gasification gas e is sent into IGCC unit 12, and char Gasification and electric power are combined, and realizes the coupling of coal chemical industry and electric power.
The purification gasification gas e of pyrolysis-gasification coupling system A gasification unit 8 output, a part are used for the production of chemicals
It mainly include alcohols synthesis unit 10, carbonylation synthesis unit 11, other chemical products；A part (is taken for oil product synthesis
Hold in the palm synthesis unit 9)；A part is for generating electricity (IGCC unit 12).Purification gasification gas e is sent into alcohols synthesis unit 10, through difference
Processing mode obtains methanol, ethylene glycol, mixed alcohol etc..Purification gasification gas e is sent into carbonylation unit 10, and synthesis obtains acetic acid etc..
In addition, purification gasification gas e is sent into different processing according to the quality of purification gasification gas e and to the different demands of Poly-generation product
Unit produces other chemical products.Purification gasification gas e is sent into F- T synthesis unit 9, adds through F-T synthetic oil with coal tar
Naphtha, gasoline, the diesel oil etc. obtained after the processing of hydrogen refined unit 6 reconciles, and obtains high-quality liquid fuel, alleviates crude oil in China
Pressure.Purification gasification gas e is sent into IGCC unit 12, and char Gasification and electric power are combined, and realizes the coupling of coal chemical industry and electric power.
Pyrolysis-gasification coupling system A gasification unit 8 output lime-ash and through the second gas solid separation in gasification unit 8
Raw material lime-ash f of the lime-ash as processing and utilization that device 23 is discharged, for building, cement, chemical industry, extraction rare metal etc..
Embodiment two:
As shown in figure 3, device is simpler, is easy to deploy and control in order to make, the present invention is by pyrolysis unit 2 in attached drawing 1
Pyrolysis oven 13 and the gasification furnace of gasification unit 8 22 and semicoke current divider 20 are integrated in one apparatus, realize raw material pyrolysis of coal and
The coupling of gasification.Including standby coal unit 1, pyrolytic gasification coupling unit 25 and polygenerations systeme B.
Pyrolytic gasification coupling unit 25 is as shown in Fig. 4, including pyrolysis gasification furnace 26, the first gas-solid separator 14, gas-liquid
Separator 15, oil water separator 16, type tar purifier 17, electrical tar precipitator 18, first gas clarifier 19, quenching paralysis facility
21, the second gas-solid separator 23 and second gas clarifier 27.It is as shown in Fig. 4 between each component to be connected by pipeline,
Output end at the top of the pyrolysis section of specific pyrolysis gasification furnace 26 by piping connection in the input terminal of the first gas-solid separator 14,
The output end of the solid-state isolate of first gas-solid separator 14 by piping connection in the input terminal of pyrolysis gasification furnace gasification section, the
The output end of the gaseous state isolate of one gas-solid separator 14 is by piping connection in the input terminal of gas-liquid separator 15, gas-liquid separation
For the gaseous state isolate output end of device 15 by piping connection in the input terminal of electrical tar precipitator 18, electrical tar precipitator 18 passes through pipeline
Be connected to the input terminal of first gas clarifier 19, the output end of the Liquid segregation object of gas-liquid separator 15 by piping connection in
The input terminal of oil water separator 16, the output end of oil water separator 16 by piping connection in the input terminal of type tar purifier 17,
26 pyrolysis section bottom extension semicoke of pyrolysis gasification furnace is by piping connection in quenching paralysis facility 21.26 gas of pyrolysis gasification furnace
Change the output end at the top of section by piping connection in the input terminal of the second gas-solid separator 23, the output of the second gas-solid separator 23
End is by piping connection in the input terminal of second gas clarifier 27.
25 process flow of pyrolytic gasification coupling unit is as follows:
Raw coal is in standby coal unit 1, through washing screening, drying or through series of preprocessing (different atmosphere, swelling treatment
Deng), obtain the feed coal a for being able to satisfy technique requirement.Feed coal a is sent into the pyrolysis section of pyrolysis gasification furnace 26,500 DEG C~800
Under the conditions of DEG C, pyrolytic reaction is carried out, (contains CO, H from pyrolysis section top output raw coke oven gas2、CH4、CO2、O2、H2S, tar, coke breeze
Deng), it is pyrolyzed pars infrasegmentalis output pyrolysis char.The raw coke oven gas that 26 pyrolysis section of pyrolysis gasification furnace generates is sent into the first gas-solid separator
14, it will wherein be mixed with coke breeze impurity and separate, and isolate coke breeze return through the first gas-solid separator 14 and be transported to pyrolytic gasification
The gasification section of furnace 26 gasifies at 800~1300 DEG C, and the dedusting coal gas isolated through the first gas-solid separator 14 is sent into gas-liquid
Separator 15 isolates gaseous products and liquid product through it, and gaseous products therein are sent into electrical tar precipitator 18 further
After removing wherein remaining tar, it is sent into first gas clarifier 19, removes the gaseous impurity of the components such as nitrogenous, sulphur, is obtained net
Change coal gas b, liquid product therein is sent into oil water separator 16 and carries out water-oil separating, and the tar isolated is sent into type tar purifier
17, further purification is purified tar c.The moisture isolated through oil water separator 16 can be followed for industrial water after processing
Ring uses, substantially realization hoop structure.Coal gas b and purification tar c are purified according to feedstock property and product needs, is respectively fed to
Polygenerations systeme B carries out following process.
The partial thermal decomposition semicoke part that pars infrasegmentalis comes out is pyrolyzed from pyrolysis gasification furnace 26 to set by pipeline feeding quenching passivation
Standby 21, the semicoke raw material d that can directly utilize is obtained after processing, is sent into polygenerations systeme B, remaining semicoke is in pyrolysis gasification furnace 26
Gasification section carry out 800~1300 DEG C of gasification reaction, the gasification gas come out through gasification section top contains CO, H2、CO2、CH4、O2、
H2S, lime-ash etc. is sent into the second gas-solid separator 23, and the lime-ash isolated through the second gas-solid separator 23 and the gasification of gasification furnace 22 are surplus
Raw material lime-ash f of the remaining lime-ash as processing and utilization is sent into polygenerations systeme B, carries out following process.Through the second gas-solid separator
Dedusting gasification pneumatic transmission after 23 dedustings enters second gas clarifier 27, after removing the gaseous impurities of ingredients such as nitrogenous, sulphur, obtains
Purification gasification gas e is sent into production of the polygenerations systeme B for subsequent chemicals, oil product, electric power etc..Realize oil, gas, change, electricity, heat
Poly-generation.
Polygenerations systeme structural union and process flow are the same as the polygenerations systeme B in attached drawing 1.
Within the system, the pyrolysis and gasification of feed coal are completed in a device pyrolysis gasification furnace 26, and coal is realized in segmentation
The pyrolysis and gasification of charcoal reduce equipment, energy conservation.
Within the system, the pyrolysis and gasification of feed coal are completed in a device pyrolysis gasification furnace 26, and coal is realized in segmentation
The pyrolysis and gasification of charcoal reduce equipment, energy conservation.
The present invention can be according to enterprise and user demand, flexible choice raw material and system process.Feed coal can be raw coal or
The coal of preprocessed mistake, the process system pyrolytic technique can choose drum-type, fixed bed, fluidized bed, sedimentation bed, entrainment bed,
One of diversified forms such as moving bed, it is total that pyrolytic process can be hydropyrolysis, catalytic hydropyrolysis and other hydrogenous materials
Pyrolysis etc..Gasification technology can from Shandong surprise gasification technology, ash agglomerating gasification technology and U-GAS gasification technology, K-T gasification technology etc. at
It is selected in ripe technology one such.High yield tar, Gao Pin are prepared by core of middle low temperature pyrogenation-gasification coupling of coal
The products such as matter coal gas and high heating value semicoke, thus realize oil, gas, change, electricity, heat Poly-generation, the sub-prime cleaning for reaching coal is high
The cascade utilization of effect conversion and energy.
The present invention compares traditional polygenerations systeme and technique also has the effect that
1, heat self-balancing
Pyrolysis-gasification coupling technology is gasified raw material using pyrolysis char, gasifies gas or pyrolysis coal gas as heat carrier is
Pyrolysis oven provides heat, is not necessarily to additional combustion gas, self-balancing is realized on heat.
2, product index is excellent
In pyrolysis-gasification coupling technology, the gasification gas that pyrolytic process is generated using char Gasification is as gas heat carrier, nothing
Other gas interventions, the pyrolysis gas main component of generation are CO, CH4And H2, contain a small amount of N2, calorific value is high, quality is preferable.Together
When gasification gas in contain H2、CH4Etc. the active component for being conducive to hydropyrolysis, therefore it can be improved tar yield, and high in tar
Added value light components are more, and oil quality is high, and part petroleum can be replaced to be used for the processing of oil product.Be pyrolyzed coal gas synthesis gas at
Divide height, can directly extract LNG and H2；Pyrolytic tar light components content is high, can obtain naphtha and gasoline bavin to greatest extent
Oil etc.；Coke breeze is used for gasified raw material in the semicoke of high-quality, solves the problems, such as coke breeze using difficulty.Remaining semicoke is as needed
The raw material processed as different process and product.
3, products scheme is flexible
Coal pyrolysis at three kinds of form products such as solid (pyrolysis char), liquid (coal tar) and gas (pyrolysis coal gas),
Gasification come out gasification gas, can be further processed as needed respectively, realize oil, gas, change, electricity, heat Poly-generation.Pyrolysis obtains
Naphtha and the oil product that synthesizes of gasification funds support reconcile, obtain the liquid fuel of high-quality.Oil, gas, change, electricity, heat
Poly-generation can be adjusted flexibly according to coal difference, technique change, market and user demand in different schemes.
4, energy conservation and environmental protection is with the obvious advantage
Heat carrier of the high-temperature gasification gas as pyrolysis system that char Gasification generates, provides the energy of pyrolysis needs, and normal
Rule pyrolysis does heat carrier technology using flue gas and compares, unit product CO2Discharge amount is substantially reduced.Technique generates a little useless
Water is recycled after can carrying out preliminary treatment for polygenerations systeme industrial water, substantially realization sewage zero-discharge.
5, the embodiment of multiple coupling
(1) pyrolysis-gasification (integration) coupling technique realizes energy coupling
The high-temperature gasification gas that heat needed for pyrolysis system is generated by gasification char in pyrolysis-gasification coupling technique is shown
Heat is provided or is provided after processing by pyrolysis coal gas, so that the heat in gasification system is utilized effectively, is effectively increased dress
The integrated heat efficiency set.
(2) pyrolysis-gasification (integration) coupling technique realizes material coupling
Material couples major embodiment both ways, first is that it is gasification system raw material that pyrolysis system product, which is pyrolyzed Jiaozhuo, solves
The Utilizing question of partial thermal decomposition coke；Second is that if gasification system does not use pyrolysis burnt, can be selected be suitable for gasification coal, then one
A process system can solve the Utilizing question of different types of coal, realize coal all of raw material scheme is flexible.
(3) pyrolysis-gasification (integration) coupling technique realizes product coupling
Pyrolysis-gasification coupling technology obtains high-quality product, and the coupling between product is realized in further processing.As obtained
Methanol and naphtha is coupled prepares alkene, or with reformation/couple preparation PX；Ethylene glycol and PX production PTA/PET etc..
(4) pyrolysis-gasification (integration) coupling technique realizes technique coupling
Technique couples major embodiment both ways, first is that the intervention for passing through gasification system, thus it is possible to vary pyrolysis system pyrolysis
Environment improves conventional pyrolysis for hydropyrolysis；Second is that pyrolysis-gasification coupling feature itself is suitable for introducing catalysis system, or
It is to change pyrolysis atmosphere or change pyrolysis oil gas composition, realizes the purpose of volume increase tar.
(5) pyrolysis-gasification (integration) coupling technique realizes device coupling
Device coupling is mainly reflected in, and pyrolysis installation and gasification installation originally, which is coupled, can be realized process flow
Densification is realized efficient while reducing maintenance cost, saves power.
Claims (7)
1. a kind of coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification, it is characterised in that: including pyrolytic gasification coupled system A
With polygenerations systeme B；The pyrolytic gasification coupled system A includes being coupled in integrated pyrolysis unit and gasification unit, and pyrolysis is single
Member includes raw coal entrance, purification gas exit, purification tar outlet and semicoke outlet, and gasification unit includes that purification gasification gas goes out
Mouth, lime-ash outlet and gasification agent inlet；The polygenerations systeme B includes the purification coal connecting with pyrolysis unit purification gas exit
Gas separative unit (3), and the purification tar separation unit (5) that connect of pyrolysis unit purification tar outlet, respectively with gasification unit
The chemical products synthesis unit and IGCC unit (12) of purification gasification gas outlet connection；Purification tar separation unit (5) successively connects
It is connected to coal tar hydrorefining unit (6) and oil product separative unit (7).
2. the coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification according to claim 1, it is characterised in that: described net
Change coal gas separative unit (3) outlet and H2The connection of separative unit (4) entrance, H2Separative unit (4) outlet and coal tar hydrorefining
Unit (6) connection.
3. the coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification according to claim 1, it is characterised in that: described more
Co-generation system B includes that oil product reconciles unit (24), and the chemical products synthesis unit includes F- T synthesis unit (9), alcohols conjunction
At unit (10) and carbonylation synthesis unit (11), oil product reconciliation unit (24) is closed with oil product separative unit (7) and Fischer-Tropsch respectively
It is connected at unit (9).
4. according to claim 1, the coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification described in 2 or 3, it is characterised in that:
The pyrolysis unit includes pyrolysis oven (13), and pyrolysis oven gas vent is sequentially connected the first gas-solid separator (14), gas-liquid separation
Device (15), electrical tar precipitator (18) and first gas clarifier (19), first gas clarifier (19) outlet and purification coal gas point
It is connected from unit (3)；Gas-liquid separator (15) liquid outlet is sequentially connected oil water separator (16) and type tar purifier (17),
Type tar purifier (17) outlet is connect with purification tar separation unit (5)；The outlet of pyrolysis oven (13) semicoke and semicoke current divider
(20) entrance connects, and semicoke current divider (20) outlet is connected with quenching paralysis facility (21) entrance；
The gasification unit includes gasification furnace (22), and gasification furnace (22) gas vent is connected with the second gas-solid separator (23) in turn
With second gas clarifier (27), second gas clarifier (27) outlet respectively with chemical products synthesis unit) and IGCC unit
(12) it connects；
Semicoke current divider (20) outlet is divided into two-way, is connected all the way with quenching paralysis facility (21) entrance, another way and gasification
The connection of furnace (22) semicoke entrance.
5. the coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification according to claim 4, it is characterised in that: described
One gas purifier (19) outlet is divided into two-way, connect all the way with purification coal gas separative unit (3), another way and pyrolysis oven (13)
It is pyrolyzed the connection of heated carrier gas entrance.
6. the coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification according to claim 4, it is characterised in that: described
Two gas-solid separators (23) outlet is divided into two-way, is connected to all the way with second gas clarifier (27) entrance, another way and pyrolysis oven
(13) pyrolysis oven heated carrier gas entrance is connected to.
7. the coupling integrated polygenerations systeme of coal chemical industry pyrolytic gasification according to claim 4, it is characterised in that: including standby
Coal unit (1), the gasification furnace (22) are provided with raw coal entrance, standby coal unit (1) respectively with gasification furnace (22) raw coal entrance and
Pyrolysis unit raw coal entrance is connected.
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