CN102061182A - Method for coal hydrogenation pyrolysis and gasification coupling - Google Patents
Method for coal hydrogenation pyrolysis and gasification coupling Download PDFInfo
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- CN102061182A CN102061182A CN2011100216746A CN201110021674A CN102061182A CN 102061182 A CN102061182 A CN 102061182A CN 2011100216746 A CN2011100216746 A CN 2011100216746A CN 201110021674 A CN201110021674 A CN 201110021674A CN 102061182 A CN102061182 A CN 102061182A
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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
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
- C10B49/04—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated
- C10B49/08—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form
- C10B49/10—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form according to the "fluidised bed" technique
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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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered 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
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/463—Gasification of granular or pulverulent flues in suspension in stationary fluidised beds
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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
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/62—Processes with separate withdrawal of the distillation products
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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
Abstract
The invention discloses a method for coal hydrogenation pyrolysis and gasification coupling, comprising the steps of: drying and preheating raw material coal with granularity less than or equal to 2mm in a coal drying and preheating system; putting 60-80% of the dried and preheated raw material coal in a coal hydrogenation pyrolysis furnace to carry out coal hydrogenation pyrolysis; putting a pyrolyzed gas-phase product in a pyrolyzed gas purification and separation system to carry out separation; putting all the semicoke generated by the coal hydrogenation pyrolysis furnace in a coke hydrogenation gasification furnace to carry out hydrogenation gasification; putting a gasified gas-phase product in a gasified gas purification and separation system; and causing 20-40% of the dried and preheated raw material coal and high-temperature coke granules from the coke hydrogenation gasification furnace to enter a hydrogen-rich generator from upper and lower paths under the combined action of oxygen and a water vapor mixed gasification agent so as to carry out gasification reaction. The coal hydrogenation pyrolysis, semicoke hydrogenation gasification and coke granule hydrogen production are combined; therefore, the tar yield and the light component content are effectively improved and methane-rich pyrolyzed gas, gasified gas and coal chemical products such as naphthalene, benzene, phenol and the like with high added value can be obtained.
Description
Technical field
The present invention relates to a kind of coal resources comprehensive utilization technique, relate in particular to a kind of coal hydrogenation pyrolysis and gasification coupled method.
Background technology
Enter 21 century, along with the rapid growth of economy, to the also sharply increase of demand of industrial chemicals, in the industrial chemicals structure, coal accounts for over half, and " development Coal Chemical Industry, exploitation and popularization clean coal technology " become the common recognition of industrial community and academia.For the classification that realizes coal resources efficiently utilizes, academia has proposed the process imagine of " coal pulls out head ", fully extracts gas, liquid fuel and fine chemicals in coal.
In the prior art, the tar yield of pyrolysis of coal technology is lower, and light constituent content is less; The quick hydropyrolysis technology of coal can improve tar yield, obtains the high heating value gas of methane rich simultaneously, but in the feed coal still some carbon exist with low value-added semicoke form, the total carbon utilisation rate of raw material is lower.Coal Gasification Technology can obtain the different synthetic gas of gaseous fraction by selecting different vaporized chemicals, but with regard to specific gasifying medium, its synthesis gas components is more single, also can't extract more valuable Coal Chemical Industry products such as naphthalene, benzene, phenol simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of coal hydrogenation pyrolysis and gasification coupled method, this method combines coal hydrogenation pyrolysis, semicoke hydrogasification and the hydrogen manufacturing of burnt grain, fully in coal, extract gas, liquid fuel and fine chemicals, combine the advantage of pyrolysis of coal technology and Coal Gasification Technology, effectively improve tar yield and light constituent content, can obtain simultaneously the Coal Chemical Industry products such as naphthalene, benzene, phenol of methane rich pyrolysis coal gas and gasification gas and high added value.
The objective of the invention is to be achieved through the following technical solutions:
Coal hydrogenation pyrolysis of the present invention and gasification coupled method comprise the processing step of following order:
A, the feed coal that granularity is less than or equal to 2mm carry out drying and preheating in coal drying and preheating system, dry back total water is less than or equal to 8%, and preheating temperature is 250-350 ℃;
Feed coal 60%-80% after drying and the preheating enters the coal hydrogenation pyrolysis oven, under pressure 1.0-3.0MPa and temperature 550-680 ℃ condition, carry out hydropyrolysis, the pyrolysis gas-phase product enters pyrolysis gas purification separation system to be separated, and the product after the separation comprises: methane rich pyrolysis coal gas, tar, naphthalene, benzene, phenol etc.;
The semicoke of B, the production of described coal hydrogenation pyrolysis oven all enters burnt hydrogasification stove, under pressure 1.0-3.0MPa and temperature 327-427 ℃ condition, carry out hydrogasification, the gasification gas-phase product enters gasification gas purification separation system, isolates the gasification gas that is rich in methane;
Feed coal 20%-40% after C, drying and the preheating with divides under the acting in conjunction of oxygen and water vapor mixture agent from the porous of described burnt hydrogasification stove, loose high-temperature coke grain about two-way enter rich hydrogen generator, under pressure 1.0-3.0MPa and temperature 900-1500 ℃ condition, carry out gasification reaction, the hydrogen-rich gas of producing uses as the fluidized reaction gas of described coal hydrogenation pyrolysis oven, and its lime-ash is handled in removing slag system and finished.
As seen from the above technical solution provided by the invention, coal hydrogenation pyrolysis that the embodiment of the invention provides and gasification coupled method, because coal hydrogenation pyrolysis, semicoke hydrogasification and the hydrogen manufacturing of burnt grain are combined, can fully in coal, extract gas, liquid fuel and fine chemicals, the advantage of comprehensive pyrolysis of coal technology and Coal Gasification Technology, effectively improve tar yield and light constituent content, can obtain simultaneously the Coal Chemical Industry products such as naphthalene, benzene, phenol of methane rich pyrolysis coal gas and gasification gas and high added value.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the process flow sheet of coal hydrogenation pyrolysis of the present invention with gasification coupled method.
Among the figure: 1, coal drying and preheating system, 2, the coal hydrogenation pyrolysis oven, 3, burnt hydrogasification stove, 4, rich hydrogen generator, 5, pyrolysis gas purification separation system, 6, the gasification gas purification system, 7, remove slag system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
Coal hydrogenation pyrolysis of the present invention and gasification coupled method, its preferable embodiment comprises the processing step of following order as shown in Figure 1:
A, the feed coal that granularity is less than or equal to 2mm carry out drying and preheating in coal drying and preheating system, dry back total water is less than or equal to 8%, and preheating temperature is 250-350 ℃;
Feed coal 60%-80% after drying and the preheating enters the coal hydrogenation pyrolysis oven, under pressure 1.0-3.0MPa and temperature 550-680 ℃ condition, carry out hydropyrolysis, the pyrolysis gas-phase product enters pyrolysis gas purification separation system to be separated, and the product after the separation comprises: methane rich pyrolysis coal gas, tar, naphthalene, benzene, phenol etc.;
The semicoke of B, the production of described coal hydrogenation pyrolysis oven all enters burnt hydrogasification stove, under pressure 1.0-3.0MPa and temperature 327-427 ℃ condition, carry out hydrogasification, the gasification gas-phase product enters gasification gas purification separation system, isolates the gasification gas that is rich in methane;
Feed coal 20%-40% after C, drying and the preheating with divides under the acting in conjunction of oxygen and water vapor mixture agent from the porous of described burnt hydrogasification stove, loose high-temperature coke grain about two-way enter rich hydrogen generator, under pressure 1.0-3.0MPa and temperature 900-1500 ℃ condition, carry out gasification reaction, the hydrogen-rich gas of producing uses as the fluidized reaction gas of described coal hydrogenation pyrolysis oven, and its lime-ash is handled in removing slag system and finished.
Described coal hydrogenation pyrolysis oven is a fluidized-bed reactor, the pyrolysis coal gas after fluidized reaction gas is purified by a part and form from the hydrogen-rich gas of rich hydrogen generator;
Described burnt hydrogasification stove is a fluidized-bed reactor, and fluidized reaction gas is the pyrolysis coal gas after a part purifies;
Described rich hydrogen generator is the cyclone bed reactor.
The present invention combines coal hydrogenation pyrolysis, semicoke hydrogasification and the hydrogen manufacturing of burnt grain, fully in coal, extract gas, liquid fuel and fine chemicals, combine the advantage of pyrolysis of coal technology and Coal Gasification Technology, effectively improve tar yield and light constituent content, can obtain simultaneously the Coal Chemical Industry products such as naphthalene, benzene, phenol of methane rich pyrolysis coal gas and gasification gas and high added value.
Specific embodiment:
Industrial scale with coal treatment capacity 2t/h is an example, and the technical analysis before and after the upgrading of feed coal sees Table 1.The feed coal of mean particle size 0.6mm carries out drying and preheating in coal drying and preheating system (1) after, preheating temperature is 270 ℃, wherein 60% feed coal is introduced into coal hydrogenation pyrolysis oven (2), under pressure 1.0MPa and 600 ℃ of conditions of temperature, carry out hydropyrolysis, the pyrolysis gas-phase product enters pyrolysis gas purification separation system (5) and carries out purification separation, wherein productive rates 4% such as pyrolysis gas yield 19.68% (methane-containing gas 52%), tar yield 14.63%, naphthalene, benzene, phenol; The solid product semicoke all enters burnt hydrogasification stove (3), carries out hydrogasification under pressure 1.0 and 327 ℃ of conditions of temperature, and the gasification gas-phase product enters gasification gas purification system (6), and the gasification gas component after the purification sees Table 2; Remaining burnt the feed coal with 40% in burnt hydrogasification stove (3) gasification back divides up and down under the acting in conjunction of oxygen and water vapor mixture agent, and two-way enters rich hydrogen generator (4), further gasification reaction under pressure 1.0 and 1000 ℃ of conditions of temperature, the hydrogen-rich gas component of producing sees Table 3, and its lime-ash is handled in removing slag system (7) and finished.
Technical analysis result (%) before and after the upgrading of table 1 feed coal
| Sequence number | Title | Ratio/% before the dehydration | Dehydration back ratio/% |
| 1 | Total water/M t | 17.9 | 2.5 |
| 2 | Empty butt moisture/M ad | 9.45 | |
| 3 | As received basis ash content/A ar | 9.05 | 10.75 |
| 4 | As received basis fugitive constituent/V ar | 29.40 | 34.91 |
| 5 | As received basis fixed carbon/FC ar | 43.65 | 51.84 |
| Lower heat value/Q net，ar | 21.35MJ/kg | 25.24MJ/kg |
The gasification gas component that table 2 hydrogasification stove is produced
| Sequence number | Chemical name | Content % (v/v) |
| 1 | Hydrogen | 28.6 |
| 2 | Carbonic acid gas | 13.4 |
| 3 | Carbon monoxide | 32.0 |
| 4 | Methane | 26.0 |
The gaseous fraction that the rich hydrogen generator of table 3 is produced
| Sequence number | Chemical name | Content % (v/v) |
| 1 | Hydrogen | 35.0 |
| 2 | Carbonic acid gas | 15.0 |
| 3 | Carbon monoxide | 47.0 |
| 4 | Unsaturated olefin | 2.0 |
| 5 | Nitrogen | 1.0 |
The present invention compared with prior art has the following advantages:
Technical modules such as coal hydrogenation pyrolysis that (1) the present invention is integrated, semicoke hydrogasification, the hydrogen manufacturing of burnt grain, realized the effective extension of product chain and the comprehensive utilization of feed coal, also can coal hydrogenation pyrolysis, three technical modules of semicoke hydrogasification and burnt grain hydrogen manufacturing have been carried out different combinations according to the market requirement;
(2) the present invention can obtain the rich CH of high added value by the hydropyrolysis operation
4Pyrolysis coal gas can effectively improve tar yield and light constituent content simultaneously;
(3) gasification gas of hydrogasification explained hereafter of the present invention is rich in CH
4Gas can be used as instead of natural gas and uses;
(4) rich hydrogen generator of the present invention utilizes the porous that forms after coal hydrogenation pyrolysis and the hydrogasification, loose high-temperature coke grain and the mixture of part material coal to prepare hydrogen-rich gas as solid material, and reaction efficiency height, total efficiency of carbon conversion are big.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (2)
1. a coal hydrogenation pyrolysis and the coupled method that gasifies is characterized in that, comprise the processing step of following order:
A, the feed coal that granularity is less than or equal to 2mm carry out drying and preheating in coal drying and preheating system, dry back total water is less than or equal to 8%, and preheating temperature is 250-350 ℃;
Feed coal 60%-80% after drying and the preheating enters the coal hydrogenation pyrolysis oven, under pressure 1.0-3.0MPa and temperature 550-680 ℃ condition, carry out hydropyrolysis, the pyrolysis gas-phase product enters pyrolysis gas purification separation system to be separated, and the product after the separation comprises: methane rich pyrolysis coal gas, tar, naphthalene, benzene, phenol;
The semicoke of B, the production of described coal hydrogenation pyrolysis oven all enters burnt hydrogasification stove, under pressure 1.0-3.0MPa and temperature 327-427 ℃ condition, carry out hydrogasification, the gasification gas-phase product enters gasification gas purification separation system, isolates the gasification gas that is rich in methane;
Feed coal 20%-40% after C, drying and the preheating with divides under the acting in conjunction of oxygen and water vapor mixture agent from the porous of described burnt hydrogasification stove, loose high-temperature coke grain about two-way enter rich hydrogen generator, under pressure 1.0-3.0MPa and temperature 900-1500 ℃ condition, carry out gasification reaction, the hydrogen-rich gas of producing uses as the fluidized reaction gas of described coal hydrogenation pyrolysis oven, and its lime-ash is handled in removing slag system and finished.
2. coal hydrogenation pyrolysis according to claim 1 and gasification coupled method is characterized in that:
Described coal hydrogenation pyrolysis oven is a fluidized-bed reactor, the pyrolysis coal gas after fluidized reaction gas is purified by a part and form from the hydrogen-rich gas of rich hydrogen generator;
Described burnt hydrogasification stove is a fluidized-bed reactor, and fluidized reaction gas is the pyrolysis coal gas after a part purifies;
Described rich hydrogen generator is the cyclone bed reactor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110021674 CN102061182B (en) | 2011-01-19 | 2011-01-19 | Method for coal hydrogenation pyrolysis and gasification coupling |
| PCT/CN2011/079252 WO2012097598A1 (en) | 2011-01-19 | 2011-09-01 | Preparation method of coal hydropyrolysis and gasification coupling and system thereof |
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| CN 201110021674 CN102061182B (en) | 2011-01-19 | 2011-01-19 | Method for coal hydrogenation pyrolysis and gasification coupling |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097598A1 (en) * | 2011-01-19 | 2012-07-26 | 北京神雾环境能源科技集团股份有限公司 | Preparation method of coal hydropyrolysis and gasification coupling and system thereof |
| WO2012162971A1 (en) * | 2011-05-27 | 2012-12-06 | 北京神雾环境能源科技集团股份有限公司 | Cyclone bed pulverized coal gasification method and system thereof |
| CN102911756A (en) * | 2012-10-26 | 2013-02-06 | 太原理工大学 | Technology for producing methane through low-rank coal |
| CN103160305A (en) * | 2013-03-29 | 2013-06-19 | 陕西煤业化工技术研究院有限责任公司 | System and technique for directly preparing fuel oil from coal |
| CN103911169A (en) * | 2014-04-18 | 2014-07-09 | 上海交通大学 | System and process for producing oil by hydrotorting oil shale under increased pressure |
| CN104342212A (en) * | 2013-08-01 | 2015-02-11 | 陕西煤业化工集团(上海)胜帮化工技术有限公司 | Hydropyrolysis and gasification coupling method for powdered coal fluidized bed |
| CN104593037A (en) * | 2014-12-19 | 2015-05-06 | 中美新能源技术研发（山西）有限公司 | Composite coal hydrogenation oil refining reactor and oil refining method |
| CN104736680A (en) * | 2012-06-29 | 2015-06-24 | 乔恩·雅各布森 | Method and apparatus for producing fuel gas from waste |
| CN104946282A (en) * | 2015-06-15 | 2015-09-30 | 宋佰盈 | Treating technology of slack coal |
| CN105001890A (en) * | 2015-07-10 | 2015-10-28 | 常州市宏硕电子有限公司 | Hydropyrolysis process and system for coal chemical industry |
| CN105400548A (en) * | 2015-11-20 | 2016-03-16 | 新奥科技发展有限公司 | Coal hydrogasification method and system |
| CN105647552A (en) * | 2014-12-04 | 2016-06-08 | 中国石油化工股份有限公司 | Coal carbonization and coal catalytic cracking combined technological method |
| CN106350091A (en) * | 2016-09-28 | 2017-01-25 | 中石化宁波工程有限公司 | Coal hydrogenation reaction device and reaction method |
| CN107189803A (en) * | 2017-05-27 | 2017-09-22 | 李大鹏 | A kind of coal LNG coproduction low-carbon alcohols, the system and method for fuel oil |
| CN107880942A (en) * | 2017-12-13 | 2018-04-06 | 新奥科技发展有限公司 | A kind of gasification furnace and gasification system |
| CN110358585A (en) * | 2018-04-09 | 2019-10-22 | 成都聚实节能科技有限公司 | A method of hydrocarbon-rich hydrogen coal gas and water-gas are produced in classification |
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| WO2012162971A1 (en) * | 2011-05-27 | 2012-12-06 | 北京神雾环境能源科技集团股份有限公司 | Cyclone bed pulverized coal gasification method and system thereof |
| CN104736680A (en) * | 2012-06-29 | 2015-06-24 | 乔恩·雅各布森 | Method and apparatus for producing fuel gas from waste |
| CN102911756A (en) * | 2012-10-26 | 2013-02-06 | 太原理工大学 | Technology for producing methane through low-rank coal |
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| CN105647552A (en) * | 2014-12-04 | 2016-06-08 | 中国石油化工股份有限公司 | Coal carbonization and coal catalytic cracking combined technological method |
| CN105647552B (en) * | 2014-12-04 | 2018-06-15 | 中国石油化工股份有限公司 | A kind of dry distillation of coal and coal catalytic cracking combination process |
| CN104593037B (en) * | 2014-12-19 | 2016-06-08 | 中美新能源技术研发（山西）有限公司 | A kind of method of combined type coal hydrogenation oil refining reactor and oil refining |
| CN104593037A (en) * | 2014-12-19 | 2015-05-06 | 中美新能源技术研发（山西）有限公司 | Composite coal hydrogenation oil refining reactor and oil refining method |
| CN104946282A (en) * | 2015-06-15 | 2015-09-30 | 宋佰盈 | Treating technology of slack coal |
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| CN110358585A (en) * | 2018-04-09 | 2019-10-22 | 成都聚实节能科技有限公司 | A method of hydrocarbon-rich hydrogen coal gas and water-gas are produced in classification |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102061182B (en) | 2013-01-09 |
| WO2012097598A1 (en) | 2012-07-26 |
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