CN103160294A - Omnibearing coproduction system and method by utilizing coal grading - Google Patents

Omnibearing coproduction system and method by utilizing coal grading Download PDF

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CN103160294A
CN103160294A CN2013101097866A CN201310109786A CN103160294A CN 103160294 A CN103160294 A CN 103160294A CN 2013101097866 A CN2013101097866 A CN 2013101097866A CN 201310109786 A CN201310109786 A CN 201310109786A CN 103160294 A CN103160294 A CN 103160294A
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China
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gas
coal
pyrolysis
hydrogen
oil
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CN2013101097866A
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Chinese (zh)
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CN103160294B (en
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尚建选
徐婕
郑化安
闵小建
张生军
李鑫
侯文杰
杨小彦
张栋博
赵奕程
马勇
贾培军
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陕西煤业化工技术研究院有限责任公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The invention provides an omnibearing coproduction system and method by utilizing coal grading. A standby coal system is respectively connected with a lump coal pyrolysis system and a pea coal pyrolysis system; a gasification system uses air as an input, semicoke generated by the pea coal pyrolysis system as a raw material, and generated gasified coal gas as a heat carrier of the lump coal pyrolysis system; lump coal pyrolysis oil gas generated by the lump coal pyrolysis system is used as a heat carrier of the pea coal pyrolysis system, part of generated lump coke is output as metallurgical coke, and the rest lump coke is used as a raw material for preparing carbide; pyrolysis coal gas generated by the pea coal pyrolysis system enters a crude gas treatment system, generated pyrolysis tar is used for hydrogenation grading, and generated semicoke is respectively used as semicoke for power generation and semicoke for gasification; and the crude gas treatment system uses pyrolysis coal gas generated by the pea coal pyrolysis system as a raw material, generated recovery waste heat is applied to a waste heat boiler of a power generation system, and generated carbon dioxide enters a carbon dioxide displaced coal gas system.

Description

A kind of comprehensive coal sub-prime is utilized the system and method for Poly-generation

Technical field

The present invention relates to technical field of coal chemical industry, thereby relate in particular to, take wholegrain footpath coal as field that raw material is realized oil, gas, change, electric Poly-generation.

Background technology

China is maximum in the world coal production state and country of consumption, Energy resources and the level of economic development from China, within considerable time, coal will be the topmost energy of China, but also there are a series of pollution problems in the direct utilization of coal except coal utilization efficiency is low.

The sub-prime clean conversion technology leading with pyrolytic technique compared with directions such as other coal combustion generatings, gelatin liquefaction, gasification and gasification downstreams, all having obvious advantage at aspects such as investment intensity, Technical Economy, energy conversion efficiency, is the optimum way of coal comprehensive utilization.The high-efficiency cleaning pyrolytic process of coal is divided into lump coal pyrolysis and pulverized coal pyrolysis technique according to the raw material particle size difference at present.

For take in the pyrolytic process that fine coal is raw material, existing, to produce granularity of dust little, content is high, the problems such as the solid separating effect of pyrolysis coke breeze and pyrolysis oil gas High Temperature Gas is undesirable, finally cause in coal tar ash oontent high, second-rate, can't reach the quality index of the further deep processing of coal tar; And take the pyrolytic process that lump coal is raw material, raw material particle size is required to height, can't be applicable to a large amount of fine coal that produce in existing exploitation situation.

Simultaneously, take at present the Poly-generation technology that coal is raw material is the gas head mainly with Single gas or pyrolysis of coal technology.The technology that turns to the gas head with Single gas relies on merely the CO transformationreation to adjust ratio of carbon-hydrogen in raw gas to meet the demand of further part, thereby has increased the complicacy of system and technology, and has increased CO 2discharge.And single reasonable utilization of take in the pyrolytic technique process that the pyrolysis of coal technology is the gas head a large amount of semicokes of producing becomes the principal element of restriction pyrolysis of coal scale development.

Summary of the invention

Low in order to solve coal utilizaton rate, the weak oil-gas high-temperature that reaches pulverized coal pyrolysis of Single gas or poor, the specific pyrolysis system Suitability of Coals of coal pyrolysis gas head Poly-generation adjustability separates the problems such as undesirable, the invention provides the system and method that a kind of comprehensive coal sub-prime is utilized Poly-generation.

For solving above technical problem, the present invention by the following technical solutions:

A kind of comprehensive coal sub-prime is utilized the system of Poly-generation, comprises standby coal measures system, lump coal pyrolysis system, beans pyrolysis system, raw gas treatment system, and gasification system; Wherein, the outlet of standby coal measures system is connected with the beans pyrolysis system with the lump coal pyrolysis system respectively; Gasification system be take air as input, and the semicoke that the beans pyrolysis system of take produces is raw material, and the gasification gas of generation is as the thermal barrier of lump coal pyrolysis system; The lump coal pyrolysis oil gas that the lump coal pyrolysis system produces is as the thermal barrier of beans pyrolysis system, and the lump coke part of generation is exported as metallurgical coke, and a part of lump coke is as the raw material of calcium carbide processed in addition; The pyrolysis coal gas that the beans pyrolysis system produces enters the raw gas treatment system and does further processing, and the pyrolytic tar of generation is for the hydrogenation upgrading, and the semicoke of generation is respectively as semicoke and gasification semicoke for generating; It is raw material that the raw gas treatment system be take the pyrolysis coal gas that the beans pyrolysis system produces, the sulphur of its generation is as output of products, the recovery waste heat produced is for the waste heat boiler of power generation system, the carbonic acid gas produced enters carbonic acid gas displacement coal gas gas train, and the purification coal gas of generation is respectively as synthetic gas, used for Fischer-Tropsch synthesis synthetic gas, synthetic gas and hydrogen manufacturing coal gas for alkylation for Sweet natural gas.

Described system further comprises hydrogen recovery system, it is raw material that described hydrogen recovery system be take the purification coal gas that the raw gas treatment system produces, produce after treatment hydrogen and dehydrogenation coal gas, wherein, hydrogen is divided into three parts, a part is output directly, a part is sent in the hydrofining oil system with hydrogen as the oil product upgrading, a part is sent in the chemical synthesis system with hydrogen as MEG processed, dehydrogenation coal gas is divided into two portions, a part is as coal for power generation gas, and another part is sent in the chemical synthesis system with coal gas as MEG processed.

Described system further includes the hydrofining oil system, this hydrofining oil system be take hydrogen that pyrolytic tar that the beans pyrolysis system produces and hydrogen recovery system produce and is carried out the oil product upgrading as raw material, obtain hydrogenation processed oil and petroleum naphtha, wherein, described petroleum naphtha is as the raw material of chemical synthesis system.

It is that raw material produces MEG that described chemical synthesis system be take hydrogen and the dehydrogenation coal gas that hydrogen recovery system produces; The petroleum naphtha that the purification coal gas that the raw gas treatment system of take produces and hydrofining oil system produce is raw material generation PX, PX obtains PTA through oxidation, take PTA and MEG as raw material generation PET, wherein, PTA is as output of products for a part, and a part of PTA enters into the calcium carbide industrial system in addition.

Described beans pyrolysis system comprises the beans pyrolysis oven, separator, and condenser, wherein, the import of described beans pyrolysis oven and the outlet of standby coal measures system, the outlet of lump coal decomposing system is connected, beans forms beans pyrolysis oil gas and half breeze through the beans pyrolysis oven, wherein, beans pyrolysis oil gas is separated into half breeze and de-dirt oil gas through separator, de-dirt oil gas obtains pyrolysis coal gas through condenser condenses, recovery waste heat, and pyrolytic tar, wherein, half breeze that the semicoke grain that the beans decomposing furnace produces and separator are separated is merged into semicoke as semicoke and generating semicoke for gasification.

Described raw gas treatment system comprises converter unit, acid gas removal body device, and sulfur recovery unit, and wherein, the entrance of converter unit is connected with the pyrolysis gas exit of condenser; Described condenser pyrolysis coal gas out is divided into two-way, one road enters into converter unit and forms conversion coal gas, one tunnel is that bypass coal gas is mixed to form mixed gas and enters in the acid gas removal body device with conversion coal gas, obtain carbonic acid gas and depickling coal gas after the acid gas removal body device is processed, depickling coal gas is purified coal gas after sulfur recovery unit is processed.

Described chemical synthesis system comprises methyl alcohol-naphtha reforming device, oxidation unit, ethylene glycol synthesizer, and the PET synthesizer; The import of ethylene glycol synthesizer is connected for the synthesis of MEG with the dehydrogenation gas exit with the hydrogen of hydrogen recovery system, the import of described methyl alcohol-naphtha reforming device is connected for generation of PX with the purification gas exit of raw gas treatment system and the petroleum naphtha outlet of hydrofining system respectively, described methyl alcohol-the outlet of naphtha reforming device is connected with the entrance of oxidation unit, and the entrance of described PET synthesizer is connected with the outlet of ethylene glycol synthesizer with the outlet of oxidation unit respectively.

Described system further includes power generation system, described power generation system comprises combustion gas steam turbine, waste heat boiler, pulverized coal boiler, and steam turbine, the import of described combustion gas steam turbine is connected with the dehydrogenation gas exit of hydrogen recovery system, the outlet of described combustion gas steam turbine is connected with the import of waste heat boiler, the import of described waste heat boiler is connected with the waste heat recovery outlet of beans pyrolysis system, the outlet of described waste heat boiler is connected with the entrance of steam turbine with the outlet of pulverized coal boiler, and the import of described pulverized coal boiler is connected with the semicoke outlet of beans pyrolysis system.

A kind of co-production based on said system, feed coal is divided into lump coal and beans through standby coal measures system, it is thermal barrier that lump coal be take the gasification gas that gasification system produces, in the lump coal pyrolysis system, pyrolytic reaction occurs, generate lump coal pyrolysis oil gas and lump coke, it is thermal barrier that the beans pyrolysis system be take the lump coal pyrolysis oil gas that the lump coal pyrolysis system produces, pyrolytic reaction occurs, obtain pyrolysis coal gas, pyrolytic tar and semicoke, wherein, pyrolysis coal gas enters the raw gas treatment system and is further processed, pyrolytic tar is as the hydrogenation upgrading, semicoke is as semicoke and gasification semicoke for generating, described pyrolysis coal gas is in the raw gas treatment system, through transforming, depickling, desulfurization obtains sulphur, carbonic acid gas, purify coal gas and recovery waste heat, wherein, sulphur is directly exported as product, carbonic acid gas enters into carbonic acid gas and gets for coal-bed gas system displacement coal seam gas, described recovery waste heat is sent in power generation system, purify coal gas as the Sweet natural gas synthetic gas, the used for Fischer-Tropsch synthesis synthetic gas, synthetic gas and hydrogen manufacturing coal gas for alkylation.

Purification coal gas as hydrogen manufacturing coal gas is isolated to hydrogen and dehydrogenation coal gas in hydrogen recovery system, wherein, part hydrogen is directly exported, part hydrogen is sent in the hydrofining oil system with hydrogen as the oil product upgrading, a part is sent in the chemical synthesis system and is prepared MEG, the part of dehydrogenation coal gas is generated electricity as fuel used to generate electricity, and another part is sent into synthetic MEG in the chemical synthesis system; The oil product upgrading that the pyrolytic tar that described beans pyrolysis system produces and hydrogen recovery system produce is carried out the oil product upgrading with hydrogen at the hydrofining oil system, obtains hydrogenation processed oil and petroleum naphtha, and wherein, petroleum naphtha is sent in chemical synthesis system H.

Compared with prior art, the comprehensive coal sub-prime of the present invention utilizes the system and method for Poly-generation at least to have the following advantages:

1. adaptability to raw materials is strong: using in the present invention wholegrain footpath coal as raw material.

2. heat self-balancing: adopt in the present invention gasification gas and the pyrolysis coal gas thermal barrier as pyrolytic process, the heat balance in can realizing embodying.

3. gas self-purification function: the effect that takes into account granular-bed separator at lump coal pyrolysis oven of the present invention can be played the effect of dedusting to gasification gas and pyrolysis coal gas, effectively improve the high temperature gas-solid separation problem of pulverized coal pyrolysis.

The accompanying drawing explanation

Fig. 1 is integrated artistic system schematic of the present invention;

The process for refining that Fig. 2 is Fig. 1 forms schematic diagram.

Figure 1, A lump coal preparation system pyrolysis system B C D particle system coarse coal pyrolysis gas treatment system E SNG System F G Fischer-Tropsch synthesis system seam gas carbon dioxide flooding system H chemical synthesis system I hydrotreating oil system J? H <sub TranNum="107"> 2 </ sub> generation system recovery system K L M calcium carbide industrial systems raw coal gasification system 101 107 lump coal pyrolysis pyrolysis gas oil 110 113 112 coke metallurgical coke carbon dioxide heat recovery 117 114 116 118 pyrolysis tar gasification chars 119 chars 120 chars 121 gasification power generation using coal coke, calcium carbide 123 124 127 hydrogen sulfide gas air 126 130 131 alkylation using Fischer-Tropsch synthesis gas 132 natural gas with syngas with hydrogen synthesis gas 133 134 135 dehydrogenation product hydrogen gas 136 oil with hydrogen to mention quality products acetylene 149 148 143 lime formaldehyde 151 products BDO? 153 154 products can be outside the transmission PBT? 155 156 hydrogenated oil products naphtha 159 products PX? 160 PBT system with PTA? 161? PTA? 162 products PTA? 164 products PET? 166 Fischer-Tropsch oil products 168 174 methane gas power generation system 173 MEG MEG system with hydrogen gas 175 176 b diol generation of carbon dioxide 179 178 180 lump of coal seam methane 184 181 gas purification

Figure 2 , A lump coal preparation system pyrolysis system B C D particle system coarse coal pyrolysis gas treatment system E SNG System F G Fischer-Tropsch synthesis system seam gas carbon dioxide flooding system H chemical synthesis system I hydrotreating oil system J? H <sub TranNum="109"> 2 </ sub> generation system recovery system K L M calcium carbide industrial systems equipment coal gasification system 01 03 02 coal equipment air separation unit 04 coal gasifier 05 lump coal pyrolysis furnace pyrolysis furnace 06 07 09 splitter 08 condenser 10 sulfur recovery unit 11 converting the acid gas removal unit 12 swing adsorber 13 hydrotreating reactor 14 separating device 16 column 15 the methanol synthesis gas - naphtha oil reformer gas turbine rectification column 18 17 19 20 pulverized coal boiler waste heat boiler steam turbine 22 21 23 calcium carbide furnace acetylene generator cooling tower 24 25 26 Fischer-Tropsch synthesis reactor water separator 27? PET synthesis device 28 clean oxidation unit 29 tower 30? BDO synthesis device 31? PBT synthetic tower 32 coal seam gas carbon dioxide flooding synthesis of ethylene glycol units 33 101 102 raw grain raw coal feedstock lump of coal 103 104 105 molding material pulverized coal particle 106 107 lump lump forming pyrolysis oil 108 coal pyrolysis oil and gas 110 109 Tuochen pyrolysis gas mixed gas 112 111 113 coke metallurgical coke 114 115 deacidification dioxide gas heat recovery 117 116 118 tar pyrolysis char 119 120 char gasification power generation 121 char gasification with oxygen gas 122 123 124 air carbide coke nitrogen 126 125 127 hydrogen sulfide gas glycol 129 128 PET system alkylation with ethylene glycol 130 131 Fischer-Tropsch synthesis gas with syngas 132 system synthesis gas with hydrogen gas 133 134 135 dehydrogenation product hydrogen gas 136 137 oil hydrogenation with hydrogen to mention quality synthetic oil after purification hydrogenation synthetic 139 138 140 flue gas of coal-fired superheated steam superheated steam 141 143 142 carbide lime 144 cooling calcium carbide acetylene 146 145 147 purification system BDO acetylene acetylene acetylene 149 formaldehyde 150 148 products made ??with PBT BDO? 151 products BDO? 152? BDO? 153 154 products can be outside the transmission PBT? 155 156 naphtha hydrotreating refined oil 157? PX ? 158 PTA system with PX? 159 products PX? 160 PBT system with PTA? 161? PTA? 162 products PTA? 163 PET system with PTA? 164 products PET? 165 Fischer-Tropsch synthetic Fischer-Tropsch oil products 166 167 168 gas energy products methane 169 170 bypass after the end of semi-coke transformation gas gas 171 173 172 gas power conversion system with a gas 174 MEG MEG system with hydrogen gas 175 176 177 product glycol steam power generation CO 179 178 180 lump of coal seam 181 182 183 coal methane gas carbon dioxide gas purifier 184 .

Embodiment

Entire system of the present invention forms structure as shown in Figure 1:

Standby coal measures system A be take feed coal 101 as raw material, is provided with 180 two outlets of beans 179 and lump coal, and lump coal 180 outlets are connected with the material inlet of lump coal pyrolysis system B, and beans 179 outlets are connected with the material inlet of beans pyrolysis system C.

The gasification gas 121 that the thermal barrier of lump coal pyrolysis system B produces in gasification system M provides, lump coal pyrolysis system B is provided with 107 outlets of lump coal pyrolysis oil gas and lump coke 112 outlets, 107 outlets of lump coal pyrolysis oil gas are connected with the thermal barrier import of beans pyrolysis system C, lump coke 112 outlets of lump coal pyrolysis system B are divided into two-way, one tunnel is directly as metallurgical coke 113 outputs, and a road is connected with the carbide raw material import processed of calcium carbide industrial system L with burnt 123 branch roads as calcium carbide.

Beans pyrolysis system C is provided with 110 outlets of pyrolysis coal gas, pyrolytic tar 117 outlets and semicoke 118 outlets, semicoke 118 outlets are divided into generating with semicoke 120 and gasify with semicoke 119 two-way, with power generation system K material inlet, with gasification system M material inlet, be connected respectively, pyrolytic tar 117 outlets of beans pyrolysis system C are connected with hydrofining oil system I import, and 110 outlets of pyrolysis coal gas are connected with raw gas treatment system D import.

Raw gas treatment system D is provided with sulphur 126 outlets, carbonic acid gas 114 outlets, recovery waste heat 116 outlets and purifies coal gas 184 outlets, sulphur 126 is directly exported as product, in recovery waste heat 116 input power generation system K, carbonic acid gas 114 outlet is connected with carbonic acid gas displacement coal-bed gas system G carbon dioxide inlet, through the purification coal gas 184 of raw gas treatment system D depickling desulfurization export be divided into four tunnels respectively with synthetic natural gas system E, Fischer-Tropsch synthesis system F, chemical synthesis system H and H 2the synthetic gas import of recovery system J is connected.

The preparing natural gas of purification coal gas 184 outlets of raw gas treatment system D is connected with the import of synthetic natural gas E with synthetic gas 132 branch roads, and synthetic natural gas system E is provided with methane 168 outlets; Used for Fischer-Tropsch synthesis synthetic gas 131 branch roads of purification coal gas 184 outlets of raw gas treatment system D are connected with the import of Fischer-Tropsch synthesis system F, and Fischer-Tropsch synthesis system F is provided with Fischer-Tropsch synthesis oil 166 outlets.

Hydrogen manufacturing coal gas 127 branch roads and the H of purification coal gas 184 outlets of raw gas treatment system D 2the import of recovery system J is connected, H 2recovery system J is provided with hydrogen 133 outlets and 135 outlets of dehydrogenation coal gas, H 2it is that the oil product upgrading is connected with the import of hydrofining oil system I hydrogen source with hydrogen 136 branch roads that 133 outlets are divided into three Lu, mono-tunnels, and a road is connected with the hydrogen source import of the MEG processed of chemical synthesis system H with hydrogen 175 for MEG processed, and a road is product H 2134 directly outputs, H 2dehydrogenation coal gas 135 outlets of recovery system J are divided into two-way, and a road is that coal for power generation gas 173 branch roads are connected with the fuel gas inlet of power generation system, and another one is connected with the carbon source import of the MEG processed of chemical synthesis system H with coal gas 174 branch roads for MEG processed.

The alkylation of purification coal gas 184 outlets of raw gas treatment system D is connected with the import of chemical synthesis system H with synthetic gas 130 branch roads, chemical synthesis system H is provided with product P X159 outlet, product P ET164 outlet, PTA 161 outlets and product MEG176 outlet, wherein PTA 161 outlets are provided with two branch roads, one tunnel is product P TA 162 output branch roads, and a road is connected with the PBT material inlet processed of calcium carbide industrial system L with PTA 160 branch roads for PBT processed; Hydrofining oil system I is provided with 155 outlets of hydrogenation processed oil and petroleum naphtha 156 outlets, and petroleum naphtha 156 outlets are connected with the import of chemical synthesis system H petroleum naphtha; Calcium carbide industrial system L is provided with 148 outlets of product acetylene, product B DO151 outlet and product P BT154 outlet.

Power generation system K is provided with outer transmission of electricity energy 153 and 178 outlets of generating carbonic acid gas, and generating carbonic acid gas 178 exports and is connected with the import of carbonic acid gas displacement coal-bed gas system G; Carbonic acid gas displacement coal-bed gas system G is provided with methane 181 outlets in coal seam.

The concrete technology route of scheme shown in Fig. 1 is as described below:

Feed coal 101 send in standby coal measures system A through screening and process will the beans of (6-20mm) 179 and (> 20mm) lump coal 180 send into respectively in beans pyrolysis system C and lump coal pyrolysis system B;

In beans pyrolysis system C, the lump coal pyrolysis oil gas 107 that the lump coal pyrolysis system B of take provides is thermal barrier, pyrolytic reaction occurs in beans 179 in the time of 500-800 ℃, obtain pyrolysis coal gas 110, pyrolytic tar 117 and semicoke 118 through pyrolysis and separating technology, pyrolysis coal gas 110(V/V%, CO47.14%, H 234.35%, CO 217.6%, CH 40.117%, Deng) send in raw gas treatment system D and carry out subsequent disposal, pyrolytic tar 117 is sent in hydrofining oil system I and is carried out the hydrogenation upgrading, semicoke 118 is divided into two portions, a part is sent in power generation system K with semicoke 120 as generating, and another part is sent in gasification system M with semicoke 119 as gasification;

In gasification system M, the semicoke 119 gasification gas 121(V/V% that the generating gasification reaction generates under the hot conditions of 1300 ℃ for gasification, H 221.90%, CH 439.91%, CO19.89%, CO 213.71%, etc.) pass in lump coal pyrolysis system B as lump coal pyrolysis thermal barrier;

Lump coal 180 500-800 ℃ of condition in lump coal pyrolysis system B issues the reaction of heat-dissipating solution, the lump coal pyrolysis oil gas 107 generated passes in beans pyrolysis system C as thermal barrier, pyrolysis product lump coke 112 is divided into two portions, a part is as the direct outer confession of product metallurgical coke 113, and another part is sent in calcium carbide industrial system L with burnt 123 as calcium carbide;

Pyrolysis coal gas 110 is in raw gas treatment system D, obtain sulphur 126, carbonic acid gas 114, purify coal gas 184 and recovery waste heat 116 through steps such as conversion, depickling, desulfurization, sulphur 126 is directly exported as product, carbonic acid gas 114 is sent in carbonic acid gas displacement coal-bed gas system G gas in the displacement coal seam, recovery waste heat 116 is sent in power generation system K, purifies 184 of coal gas and is divided into synthetic gas 132 for preparing natural gas, used for Fischer-Tropsch synthesis synthetic gas 131, synthetic gas 130 and hydrogen manufacturing coal gas 127 4 parts for alkylation;

Preparing natural gas synthetic gas 132 is sent in synthetic natural gas system E and is converted into the methane discharge; Used for Fischer-Tropsch synthesis synthetic gas 131 is sent in Fischer-Tropsch synthesis system F and is made product Fischer-Tropsch synthesis oil 166 through processes such as synthetic, purification, separation;

Hydrogen manufacturing coal gas 127 is sent into H 2separate and obtain hydrogen 133 and dehydrogenation coal gas 135 in recovery system J, hydrogen 133 is divided into three parts, a part is directly exported as product hydrogen 134, a part is sent in hydrofining oil system I with hydrogen 136 as the oil product upgrading, a part is sent in chemical synthesis system H with hydrogen 175 as MEG processed, dehydrogenation coal gas 135 is divided into two portions, and a part is sent in power generation system K as coal for power generation gas 173, and another part is sent in chemical synthesis system H with coal gas 174 as MEG processed;

Pyrolytic tar 117 and oil product upgrading are carried out the oil product upgrading with hydrogen 136 at hydrofining oil system I, and the processes such as separation obtain hydrogenation processed oil 155 and petroleum naphtha 156, and hydrogenation processed oil 155 is directly exported as product, and petroleum naphtha 156 is sent in chemical synthesis system H;

In chemical synthesis system H, MEG processed makes MEG with hydrogen 175 and MEG processed with coal gas 174, alkylation makes PX with synthetic gas 130 and petroleum naphtha 156, PX obtains PTA through peroxidation, PTA and MEG make PET, and PTA161 is two portions respectively, for product P TA162, directly export for one one, another part PBT processed sends in calcium carbide industrial system L with PTA160, and remaining product P X159, product P ET164, product MEG176 directly export;

In calcium carbide industrial system L, take calcium carbide with burnt 123 and lime 143 as raw material prepares calcium carbide, the calcium carbide of take prepares acetylene as raw material, acetylene and the synthetic BDO of formaldehyde 149, BDO and PBT processed obtain PBT with the PTA160 reaction, can obtain product acetylene 148, product B DO151 and product P BT154 and supply outward;

Semicoke 120, coal for power generation gas 173 and recovery waste heat 116 for fuel power generation function are all changed into to outer transmission of electricity energy 153 in power generation system K, and produce generating carbonic acid gas 178, generating carbonic acid gas 178 is sent in carbonic acid gas displacement coal-bed gas system G;

Carbonic acid gas 114 and generating carbonic acid gas 178 in carbonic acid gas displacement coal-bed gas system G in the displacement coal output layer gas obtain coal seam in methane 181, the methane obtained with synthetic natural gas system E is together as the outer confession of product methane 168.

Below in conjunction with Fig. 2, Fig. 1 of the present invention is carried out to the refinement description, the dotted line frame has been divided the concrete equipment in each system, and the present invention is described in further detail:

In accompanying drawing 2, the concrete composition structural relation of each system is as described below:

Standby coal measures system A comprises cleaning unit 01 and type coal equipment 02; Lump coal pyrolysis system B comprises lump coal pyrolysis oven 06; Beans pyrolysis system C is comprised of beans pyrolysis oven 05, separator 07 and condenser 08; Raw gas treatment system D is comprised of converter unit 09, acid gas removal device 10 and sulfur recovery unit 11; Synthetic natural gas system E consists of synthesis of natural device of air 15; Fischer-Tropsch synthesis system F comprises Fischer-Tropsch synthetic tower 25 and water-and-oil separator 26; Carbonic acid gas displacement coal-bed gas system G is comprised of carbonic acid gas displacement coal-bed gas unit 32, and chemical synthesis system H comprises methyl alcohol-naphtha reforming device 16, oxidation unit 28, ethylene glycol synthesis device 33 and PET synthesizer 27; Hydrofining oil system I is comprised of hydrofining reactor 13, knockout tower 14 and rectifying tower 17; H 2recovery system J is comprised of transformation system tower 12; Power generation system K is comprised of combustion gas steam turbine 18, waste heat boiler 19, pulverized coal boiler 20, steam turbine 21; Calcium carbide industrial system L comprises furnace of calcium carbide 22, cooling tower 23, carbide-feed generator 24, peace and quiet tower 29, BDO synthesizer 30 and PBT synthetic tower 31; Gasification system M is comprised of air separation plant 03 and vapourizing furnace 04.

Below the annexation between each devices in system in Fig. 2 is described in further detail.

Standby coal measures system A comprises cleaning unit 01 and the type coal equipment 02 be connected with cleaning unit 01 fine coal outlet, and cleaning unit 01 and type coal equipment 02 are equipped with beans outlet and lump coal outlet.

Lump coal pyrolysis system B comprises: with the cleaning unit 01 of standby coal measures system A and the lump coal of type coal equipment 02, export the lump coal pyrolysis oven 06 be connected, the thermal barrier import of lump coal pyrolysis oven 06 is connected with the gasification gas outlet of vapourizing furnace 04 in gasification system M, lump coal pyrolysis oven 06 is provided with lump coal pyrolysis oil gas vent and lump coke outlet, the lump coke outlet is divided into two-way, one tunnel is that metallurgical coke is directly exported, and a road is the burnt branch road of calcium carbide.

Beans pyrolysis system C comprises that material inlet is connected with the cleaning unit 01 of standby coal measures system A and the beans outlet of type coal equipment 02, the beans pyrolysis oven 05 that the thermal barrier import is connected with the lump coal pyrolysis oil gas vent of lump coal pyrolysis system B, beans pyrolysis oven 05 is provided with beans pyrolysis oil gas vent and the outlet of semicoke grain, its chews pyrolysis oil gas outlet is connected with separator 07 gas inlet, separator 07 is provided with half breeze outlet and de-dirt oil gas vent, de-dirt oil gas vent is connected with the import of condensing tower 08, condensing tower 08 offers the pyrolysis gas exit, recovery waste heat outlet and pyrolytic tar outlet, half breeze outlet of the semicoke grain outlet of beans pyrolysis oven 05 and separator 07 is merged into semicoke and is further divided into semicoke and generating semicoke two-way for gasification.

Raw gas treatment system D comprises the converter unit 09 be connected with the conversion gas pipe branch road of the pyrolysis gas exit of beans pyrolysis system C condensing tower 08 and the acid gas removal device 10 be connected with the mixed mixed gas pipeline of another branch road bypass coal gas of pyrolysis gas exit of coal gas after converter unit 09 conversion and beans pyrolysis system C condensing tower 08, acid gas removal device 10 is provided with carbonic acid gas outlet and depickling gas exit, the depickling gas exit is connected with sulfur recovery unit 11, sulfur recovery unit 11 is provided with the sulphur outlet and purifies gas exit, purify gas exit and be divided into four branch roads, be respectively hydrogen manufacturing coal gas branch road, alkylation synthetic gas branch road, used for Fischer-Tropsch synthesis synthetic gas branch road and preparing natural gas synthetic gas branch road.

The synthesis of natural device of air 15 of synthetic natural gas system E for being connected with the synthetic gas branch road with the preparing natural gas of sulfur recovery unit 11 in raw gas treatment system D, synthesis of natural device of air 15 is provided with the methane outlet.

Fischer-Tropsch synthesis system F comprises the Fischer-Tropsch synthetic tower 25 be connected with the used for Fischer-Tropsch synthesis synthetic gas branch road of sulfur recovery unit 11 in raw gas treatment system D and the water-and-oil separator 26 be connected with the 25 Fischer-Tropsch synthesis oil outlets of Fischer-Tropsch synthetic tower, and water-and-oil separator 26 is provided with the Fischer-Tropsch export of finished oil.

Carbonic acid gas displacement coal gas gas train G exports for the outlet of the carbonic acid gas with acid gas removal device 10 in raw gas treatment system D and with the generating carbonic acid gas of power generation system K the carbonic acid gas displacement coal-bed gas unit 32 be connected, and carbonic acid gas displacement coal-bed gas unit 32 is provided with methane outlet in coal seam.

Chemical synthesis system H comprises and synthetic gas branch road and the methyl alcohol that is connected with the 17 petroleum naphthas outlets of rectifying tower in hydrofining oil system I-naphtha reforming device 16 and ethylene glycol synthesizer 33 for the alkylation of sulfur recovery unit 11 in raw gas treatment system D, hydrogen source import and the H of ethylene glycol synthesizer 33 2in recovery system J, the MEG processed of pressure-swing absorber 12 hydrogen outlets is connected with the hydrogen branch road, carbon source import and the H of ethylene glycol synthesizer 33 2in recovery system J, the MEG processed of pressure-swing absorber 12 dehydrogenation gas exits is connected with the coal gas branch road, and ethylene glycol synthesizer 33 is provided with the ethylene glycol outlet, the ethylene glycol outlet is divided into two-way, one tunnel is that product ethylene glycol is directly exported, one tunnel is PET spent glycol branch road processed, the PX outlet of methyl alcohol-naphtha reforming device 16 is divided into two-way, one branch road is output products PX pipeline, another branch road is connected with oxidation unit 28 with the PX pipeline for PTA processed, oxidation unit 28 is provided with the PTA outlet, the PTA outlet is divided into three tunnels, the one direct output products PTA in tunnel, one tunnel is connected with the PBT synthetic tower 31 in calcium carbide industrial system K with the PTA branch road for PBT processed, one tunnel is connected with PET synthesizer 27 with the PTA branch road for PET processed, PET synthesizer 27 is provided with the PET outlet.

Hydrofining oil system I comprises with the 08 pyrolytic tar outlet of condensing tower in beans pyrolysis system C and being connected, and and H 2the hydrofining reactor 13 that in recovery system J, the oil product upgrading of pressure-swing absorber 12 hydrogen outlets is connected with the hydrogen branch road, the hydrogenation synthetic oil outlet of hydrofining reactor 13 is connected with knockout tower 14 imports, the purification back end hydrogenation synthetic oil outlet of knockout tower 14 is connected with rectifying tower 17 imports, and rectifying tower 17 is provided with the petroleum naphtha outlet at top and the hydrogenation export of finished oil of bottom.

H 2the pressure-swing absorber 12 of recovery system J for being connected with the hydrogen manufacturing gas exit of sulfur recovery unit 11 in raw gas treatment system D, pressure-swing absorber 12 is provided with hydrogen outlet and dehydrogenation gas exit, hydrogen outlet is divided into three tunnels, one tunnel is the direct output channel of product hydrogen, one tunnel is oil product upgrading hydrogen branch road, and a road is MEG processed hydrogen branch road, and the dehydrogenation gas exit is divided into two-way, one tunnel is coal for power generation gas branch road, and another road is MEG processed hydrogen branch road.

Power generation system K comprises and H 2the combustion gas steam turbine 18 that in recovery system J, the coal for power generation gas branch road of the dehydrogenation gas exit of pressure-swing absorber 12 is connected and the pulverized coal boiler 20 be connected with semicoke with the generating of beans pyrolysis system C, combustion gas steam turbine 18 is provided with the outlet of combustion gas carbonic acid gas, the outlet of combustion gas electric energy and combustion gas exhanst gas outlet, the combustion gas exhanst gas outlet is connected with waste heat boiler 19, and waste heat boiler 19 is connected with the recovery waste heat outlet of condensing tower 08 in beans pyrolysis system C, the coal-fired superheated vapour outlet of the superheated vapour outlet of waste heat boiler 19 and pulverized coal boiler 20 is connected with steam turbine 21, steam turbine 21 is provided with the outlet of steam electric energy.

Calcium carbide industrial system L comprises the PBT synthetic tower 31 that the furnace of calcium carbide 22 be connected with burnt branch road with the calcium carbide of the lump coke of lump coal pyrolysis system B medium-sized coal pyrolysis oven 06 outlet and the PBT processed exported with the PTA of oxidation unit 28 in chemical synthesis system H are connected with the PTA branch road, the calcium carbide outlet of furnace of calcium carbide 22 is connected with the import of cooling tower 23, the cooling calcium carbide outlet of cooling tower 23 is connected with the import of carbide-feed generator 24, the acetylene outlet of carbide-feed generator 24 is connected with the import of peace and quiet tower 29, the purification acetylene outlet of peace and quiet tower 29 is divided into two-way, one tunnel is that product acetylene is directly exported, one tunnel is BDO processed acetylene branch road, BDO processed is connected with BDO synthesizer 30 with the acetylene branch road, BDO synthesizer 30 is provided with the BDO outlet, the BDO outlet is divided into two-way, one tunnel is that product B DO directly exports, another road is PBT processed BDO branch road, PBT processed is connected with PBT synthetic tower 31 with the BDO branch road, PBT synthetic tower 31 is provided with the PBT outlet.

Gasification system M comprises air separation plant 03 and the vapourizing furnace 04 be connected with air separation plant 03 oxygen outlet, and the material inlet of vapourizing furnace 04 is connected with the semicoke branch road with the gasification that semicoke grain in beans pyrolysis system C and half breeze merge the semicoke outlet, and vapourizing furnace 04 is provided with gasification gas and exports.

Below describe the concrete technology route of scheme shown in Fig. 2 in detail:

Feed coal 101 can sieve as raw material fine coal 104(0-6mm through cleaning units 01), raw material beans 102(6-20mm) and raw material lump coal 103(20mm), raw material fine coal 104 is sent into the moulding beans 105 that in type coal equipment 02, reshaping is (6-20mm) and is greater than the moulding lump coal 106 of 20mm, moulding beans 105 and raw material beans 102 are merged into beans 179 and are sent into beans pyrolysis oven 05 carry out pyrolysis under 500-800 ℃, and moulding lump coal 106 and raw material lump coal 103 are merged into lump coal 180 and sent into lump coal pyrolysis oven 06 carry out the lump coal pyrolysis under 500-800 ℃.

Beans pyrolysis oven 05 is produced beans pyrolysis oil gas 108 and semicoke grain, pyrolysis of coal oil gas 108 passes into separator 07 and obtains de-dirt oil gas 109 and half breeze 169, after being mixed into semicoke 118, half breeze 169 and semicoke grain be divided into two portions, a part is sent into oxygen 122 1 that vapourizing furnace 04 makes with air separation plant 03 generating gasification under the hot conditions of 1300 ℃ that coexists in vapourizing furnace 04 for gasification with semicoke 119 and is reacted generation gasification gas 121(V/V%, H2 21.90%, CH4 39.91%, CO 19.89%, CO2 13.71%, Deng), and pass in lump coal pyrolysis oven 06 with the form of thermal barrier, another part semicoke is sent in pulverized coal boiler 20 and is acted as a fuel with semicoke 120 as generating, the de-dirt oil gas 109 obtained in separator 07 passes into condenser 08 and obtains pyrolysis coal gas 110(V/V%, CO 47.14%, H2 34.35%, CO2 17.6%, CH4 0.117%, Deng), pyrolytic tar 117 and recovery waste heat 116, and pyrolytic tar 117 is passed in hydrofining reactor 13 and carries out the hydrogenation upgrading, recovery waste heat 116 passes in waste heat boiler 19 as the generating thermal source,

Lump coal pyrolytic reaction in lump coal pyrolysis oven 06 generates lump coal pyrolysis oil gas 107 and lump coke 112, lump coal pyrolysis oil gas 107 passes in beans pyrolysis oven 05 as thermal barrier, lump coke 112 parts are as the outer confession of metallurgical coke 113, and a part is sent into furnace of calcium carbide 22 for calcium carbide with burnt 123;

It is bypass coal gas 170 that pyrolysis coal gas 110 is divided into two-way one tunnel, another road is conversion coal gas 171, conversion coal gas 171 passes into change unit 09 and is converted into the rear coal gas 172 of conversion, and be mixed into mixed gas 111 with bypass coal gas 170, mixed gas 111 is isolated carbonic acid gas 114 more successively in acid gas removal device 10, isolate sulphur 126 in sulfur recovery unit 11 and be purified coal gas 184, carbonic acid gas 114 and generating carbonic acid gas 178 all pass in carbonic acid gas displacement coal-bed gas unit 32 and obtain methane 181 in coal seam, and sulphur 126 is directly exported as product;

Purify coal gas 184 and be divided into four tunnels according to different purposes, hydrogen manufacturing coal gas 127, synthetic gas 130, used for Fischer-Tropsch synthesis synthetic gas 131 and synthetic gas 132 for preparing natural gas for alkylation;

Hydrogen manufacturing coal gas 127 passes into pressure-swing absorber 12 and makes hydrogen 133 and dehydrogenation coal gas 135, hydrogen 133 is divided into three tunnels, part hydrogen passes into ethylene glycol synthesizer 33 as hydrogen source as MEG processed with hydrogen 175, a part is as the 134 output external applications of product hydrogen, another part hydrogen passes into hydrofining reactor 13 and pyrolytic tar 117 as the oil product upgrading with hydrogen 136 and hydrogenation reactions occur makes hydrogenation synthetic oil 137 and pass into successively knockout tower 14 and rectifying tower 17 makes petroleum naphtha 156 and hydrogenation processed oil 155, petroleum naphtha 156 passes into methyl alcohol-naphtha reforming device 16 and carries out reforming reaction, the dehydrogenation coal gas 135 that pressure-swing absorber 12 is discharged is divided into two portions, a part passes into combustion gas steam turbine 18 production combustion gas electric energy 167 as coal for power generation gas 173, another part passes into ethylene glycol synthesizer 33 and the synthetic ethylene glycol 128 that makes of hydrogen 175 for MEG processed as MEG processed with coal gas 174, ethylene glycol 128 parts are directly as 176 outputs of product ethylene glycol, and another part is sent in PET synthesizer 27 with MEG129 as PET processed,

Alkylation passes into methyl alcohol-naphtha reforming device 16 with synthetic gas 130 and reacts and generate p-Xylol (PX) 157 with petroleum naphtha 156, PX is divided into two portions, a part supplies outward as product P X159, for PTA processed, with PX158, through oxidation unit, 28 oxidations obtain terephthalic acid (PTA) 161 to another part, the PTA downstream is divided into three approach, one is directly exported as product P TA162, it two passes in PBT synthetic tower 31 with PTA160 as PBT processed, it three passes into PET synthesizer 27 with PTA163 and the synthetic product P ET164 that makes of MEG129 for PET processed as PET processed,

Used for Fischer-Tropsch synthesis synthetic gas 131 passes into Fischer-Tropsch synthetic tower 25 and makes Fischer-Tropsch synthesis oil 165 and obtain Fischer-Tropsch processed oil 166 through water-and-oil separator 26; Preparing natural gas with synthetic gas 132 pass into synthesis of natural device of air 15 synthesizing methane gases and with the coal seam of carbonic acid gas displacement gained in methane 181 in the lump as 168 outputs of product methane;

The calcium carbide that passes into furnace of calcium carbide 22 also passes into cooling tower 23 successively with Jiao 123 and the outer calcium carbide of producing in furnace of calcium carbide 22 for lime 143 142, carbide-feed generator 24 and peace and quiet tower 29 are purified acetylene 146, part acetylene is as 148 outputs of product acetylene, another part pass into BDO synthesizer 30 as BDO processed with acetylene 147 and pass into formaldehyde 149 synthetic 1, 4-butyleneglycol (BDO) 152, and BDO is divided into two-way, part product B DO151 supplies outward, a part passes into PBT synthetic tower 31 as synthetic PBT with BDO150, synthesize to obtain product polybutylene terephthalate (PBT) 154 with PBT processed with PTA,

Coal for power generation gas 173 passes into combustion gas steam turbine 18 production combustion gas electric energy 167, and discharge combustion gas flue gas 139, combustion gas flue gas 139 with pass into waste heat boiler 19 together with recovery waste heat 116 obtaining in condensing tower 08 and produce superheated vapours 140 and pass into steam turbine 21, generating is burnt in pulverized coal boiler 20 with semicoke 120 and is obtained coal-fired superheated vapour 141 and also pass into steam turbine 21, steam turbine 21 produces steam electric energy 177 under superheated vapour 140 and the common effect of coal-fired superheated vapour 141, steam electric energy 177 and heating power electric energy 167 are grid-connected as outer transmission of electricity energy 153 outputs, the coal-fired carbonic acid gas 183 produced in the combustion gas carbonic acid gas 182 produced in combustion gas steam turbine 18 and pulverized coal boiler 20 is merged into generating carbonic acid gas 178 and is passed into carbonic acid gas displacement coal-bed gas unit 32.

The foregoing is only one embodiment of the present invention, it not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading specification sheets of the present invention, be claim of the present invention and contain.

Claims (10)

1. a comprehensive coal sub-prime is utilized the system of Poly-generation, it is characterized in that: comprise standby coal measures system (A), lump coal pyrolysis system (B), beans pyrolysis system (C), raw gas treatment system (D), and gasification system (M); Wherein, the outlet of standby coal measures system is connected with beans pyrolysis system (C) with lump coal pyrolysis system (B) respectively; Gasification system be take air as input, and the semicoke that the beans pyrolysis system (C) of take produces is raw material, and the gasification gas of generation is as the thermal barrier of lump coal pyrolysis system (B); The lump coal pyrolysis oil gas that lump coal pyrolysis system (B) produces is as the thermal barrier of beans pyrolysis system, and the lump coke part of generation is exported as metallurgical coke, and a part of lump coke is as the raw material of calcium carbide processed in addition; The pyrolysis coal gas that beans pyrolysis system (C) produces enters the raw gas treatment system and does further processing, and the pyrolytic tar of generation is for the hydrogenation upgrading, and the semicoke of generation is respectively as semicoke and gasification semicoke for generating; It is raw material that raw gas treatment system (D) be take the pyrolysis coal gas that beans pyrolysis system (C) produces, the sulphur of its generation is as output of products, the recovery waste heat produced is for the waste heat boiler of power generation system, the carbonic acid gas produced enters carbonic acid gas displacement coal gas gas train (G), and the purification coal gas of generation is respectively as synthetic gas, used for Fischer-Tropsch synthesis synthetic gas, synthetic gas and hydrogen manufacturing coal gas for alkylation for Sweet natural gas.
2. the system as claimed in claim 1, it is characterized in that: described system further comprises hydrogen recovery system (J), it is raw material that described hydrogen recovery system be take the purification coal gas that raw gas treatment system (D) produces, produce after treatment hydrogen and dehydrogenation coal gas, wherein, hydrogen is divided into three parts, a part is output directly, a part is sent in hydrofining oil system (I) with hydrogen as the oil product upgrading, a part is sent in chemical synthesis system (H) with hydrogen as MEG processed, dehydrogenation coal gas is divided into two portions, a part is as coal for power generation gas, another part is sent in chemical synthesis system (H) with coal gas as MEG processed.
3. the system as claimed in claim 1, it is characterized in that: described system further includes hydrofining oil system (I), this hydrofining oil system (I) be take hydrogen that pyrolytic tar that beans pyrolysis system (C) produces and hydrogen recovery system (J) produce and is carried out the oil product upgrading as raw material, obtain hydrogenation processed oil and petroleum naphtha, wherein, described petroleum naphtha is as the raw material of chemical synthesis system.
4. system as claimed in claim 2 is characterized in that: it is that raw material produces MEG that described chemical synthesis system (H) be take hydrogen and the dehydrogenation coal gas that hydrogen recovery system (J) produces; The petroleum naphtha that the purification coal gas that the raw gas treatment system of take produces and hydrofining oil system (I) produce is raw material generation PX, PX obtains PTA through oxidation, take PTA and MEG as raw material generation PET, wherein, PTA is as output of products for a part, and a part of PTA enters into the calcium carbide industrial system in addition.
5. the system as claimed in claim 1, it is characterized in that: described beans pyrolysis system comprises beans pyrolysis oven (05), separator (07), and condenser (08), wherein, the import of described beans pyrolysis oven is connected with the outlet of lump coal pyrolysis system with the outlet of standby coal measures system, beans forms beans pyrolysis oil gas and half breeze through the beans pyrolysis oven, wherein, beans pyrolysis oil gas is separated into half breeze and de-dirt oil gas through separator, de-dirt oil gas obtains pyrolysis coal gas through condenser condenses, recovery waste heat, and pyrolytic tar, wherein, half breeze that the semicoke grain that the beans pyrolysis oven produces and separator are separated is merged into semicoke as semicoke and generating semicoke for gasification.
6. the system as claimed in claim 1, it is characterized in that: described raw gas treatment system (D) comprises converter unit (09), acid gas removal body device (10), and sulfur recovery unit (11), wherein, the entrance of converter unit (09) is connected with the pyrolysis gas exit of condenser; Described condenser pyrolysis coal gas out is divided into two-way, one road enters into converter unit and forms conversion coal gas, one tunnel is that bypass coal gas is mixed to form mixed gas and enters in the acid gas removal body device with conversion coal gas, obtain carbonic acid gas and depickling coal gas after the acid gas removal body device is processed, depickling coal gas is purified coal gas after sulfur recovery unit is processed.
7. system as claimed in claim 4, it is characterized in that: described chemical synthesis system (H) comprises methyl alcohol-naphtha reforming device (16), oxidation unit (28), ethylene glycol synthesizer (33), and PET synthesizer (27); The import of ethylene glycol synthesizer is connected for the synthesis of MEG with the dehydrogenation gas exit with the hydrogen of hydrogen recovery system, the import of described methyl alcohol-naphtha reforming device is connected for generation of PX with the purification gas exit of raw gas treatment system and the petroleum naphtha outlet of hydrofining system respectively, described methyl alcohol-the outlet of naphtha reforming device is connected with the entrance of oxidation unit, and the entrance of described PET synthesizer is connected with the outlet of ethylene glycol synthesizer with the outlet of oxidation unit respectively.
8. the system as claimed in claim 1, it is characterized in that: described system further includes power generation system, described power generation system comprises combustion gas steam turbine (18), waste heat boiler (19), pulverized coal boiler (20), and steam turbine (21), the import of described combustion gas steam turbine is connected with the dehydrogenation gas exit of hydrogen recovery system, the outlet of described combustion gas steam turbine is connected with the import of waste heat boiler, the import of described waste heat boiler is connected with the waste heat recovery outlet of beans pyrolysis system, the outlet of described waste heat boiler is connected with the entrance of steam turbine with the outlet of pulverized coal boiler, the import of described pulverized coal boiler is connected with the semicoke outlet of beans pyrolysis system.
9. the co-production based on the described system of claim 1, it is characterized in that: feed coal is divided into lump coal and beans through standby coal measures system, it is thermal barrier that lump coal be take the gasification gas that gasification system produces, in the lump coal pyrolysis system, pyrolytic reaction occurs, generate lump coal pyrolysis oil gas and lump coke, it is thermal barrier that the beans pyrolysis system be take the lump coal pyrolysis oil gas that the lump coal pyrolysis system produces, pyrolytic reaction occurs, obtain pyrolysis coal gas, pyrolytic tar and semicoke, wherein, pyrolysis coal gas enters the raw gas treatment system and is further processed, pyrolytic tar is as the hydrogenation upgrading, semicoke is as semicoke and gasification semicoke for generating, described pyrolysis coal gas is in the raw gas treatment system, through transforming, depickling, desulfurization obtains sulphur, carbonic acid gas, purify coal gas and recovery waste heat, wherein, sulphur is directly exported as product, carbonic acid gas enters into carbonic acid gas and gets for coal-bed gas system displacement coal seam gas, described recovery waste heat is sent in power generation system, purify coal gas as the Sweet natural gas synthetic gas, the used for Fischer-Tropsch synthesis synthetic gas, synthetic gas and hydrogen manufacturing coal gas for alkylation.
10. method as claimed in claim 9, it is characterized in that: the purification coal gas as hydrogen manufacturing coal gas is isolated to hydrogen and dehydrogenation coal gas in hydrogen recovery system, wherein, part hydrogen is directly exported, part hydrogen is sent in the hydrofining oil system with hydrogen as the oil product upgrading, a part is sent in the chemical synthesis system and is prepared MEG, and the part of dehydrogenation coal gas is generated electricity as fuel used to generate electricity, and another part is sent into synthetic MEG in the chemical synthesis system; The oil product upgrading that the pyrolytic tar that described beans pyrolysis system produces and hydrogen recovery system produce is carried out the oil product upgrading with hydrogen at the hydrofining oil system, obtains hydrogenation processed oil and petroleum naphtha, and wherein, petroleum naphtha is sent in chemical synthesis system H.
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CN110452723A (en) * 2019-07-25 2019-11-15 内蒙古万众炜业科技环保股份公司 A kind of conservation of energy system of coal production

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