AU2017416200B2 - Coal pyrolysis process device - Google Patents

Coal pyrolysis process device Download PDF

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AU2017416200B2
AU2017416200B2 AU2017416200A AU2017416200A AU2017416200B2 AU 2017416200 B2 AU2017416200 B2 AU 2017416200B2 AU 2017416200 A AU2017416200 A AU 2017416200A AU 2017416200 A AU2017416200 A AU 2017416200A AU 2017416200 B2 AU2017416200 B2 AU 2017416200B2
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coal
primary
coal pyrolysis
gas outlet
pyrolysis device
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AU2017416200A1 (en
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Guochao Cao
Fang Li
Jinfeng Li
Mingde Li
Yanwu LV
Xibin Wang
Shucheng Zhu
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Henan Longcheng Coal Efficient Technology Application Co Ltd
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Henan Longcheng Coal Efficient Technology Application Co Ltd
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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
    • C10B27/00—Arrangements for withdrawal of the distillation gases
    • 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
    • C10B33/00—Discharging devices; Coke guides
    • 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
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
    • 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
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/28—Other processes
    • C10B47/30—Other processes in rotary ovens or retorts
    • 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
    • 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
    • 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
    • C10B57/02—Multi-step carbonising or coking processes
    • 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
    • C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
    • C10B57/10—Drying
    • 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
    • C10B57/18—Modifying the properties of the distillation gases in the oven
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • 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
    • 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
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • 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
    • C10K1/02—Dust removal
    • 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
    • C10K1/02—Dust removal
    • C10K1/024—Dust removal by filtration
    • 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
    • C10K1/02—Dust removal
    • C10K1/026—Dust removal by centrifugal forces
    • 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
    • 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
    • C10J2300/12—Heating the gasifier
    • C10J2300/1269—Heating the gasifier by radiating device, e.g. radiant tubes
    • 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
    • C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Industrial Gases (AREA)
  • Drying Of Solid Materials (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

A coal pyrolysis process device, comprising a primary coal pyrolysis device (1) and a secondary coal pyrolysis device (2), wherein a discharge port (12) of the primary coal pyrolysis device (1) communicates with a feed port (21) of the secondary coal pyrolysis device (2). When coal is in the primary coal pyrolysis device (1), coal tar is extracted to the maximum extent, and then enters the secondary coal pyrolysis device (2). The coal continues to be heated and undergo pyrolysis at an upper portion of the secondary coal pyrolysis device (2), so that volatile matter of upgraded coal having undergone primary pyrolysis and upgrading are further reduced in the secondary coal pyrolysis device (2), and more gas is produced.

Description

COAL PYROLYSIS PROCESS DEVICE
FIELD [0001] The present disclosure relates to the technical field of heat exchange, and in particular to a coal pyrolysis process device.
DESCRIPTION [0002] In the present description and claims, the term “comprising” shall be understood to have a broad meaning similar to the term “including” and will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps. This definition also applies to variations on the term “comprising” such as “comprise” and “comprises”.
BACKGROUND [0003] Depending on different requirements of final products, coal pyrolysis apparatuses are greatly different from one another, and also have greatly different coal tar yields, for example, a coke furnace for making coke and a semi-coke furnace for producing semi-coke have a great difference in furnace type. The coke furnace produces coke with a relatively low amount of volatile matter, has low coal tar yield, but produces a large amount of coal gas, whereas the semi-coke furnace produces semi-coke with a higher amount of volatile matter, has relatively high coal tar yield, and produces a slightly lower amount of coal gas. With the demand of petroleum strategy, a rotary kiln for coalite tar with high oil yield has become a new favorite in recent years. A Chinese Patent with application number 201010262786.6 and publication number CN101985558, entitled “Coal Decomposing Equipment”, discloses a coal decomposing equipment including an airtight kiln body with an coal inlet and an coal outlet, wherein a flame gas pipeline heating facility is set in the kiln body and a channel for impelling and decomposing coal is formed between the flame gas pipeline heating facility and an inner wall of the kiln body; and a coal decomposition gas collecting pipe is provided on the kiln body to communicate with the channel for impelling and decomposing coal. Since this invention i
2017416200 17 Feb 2020 allows a large amount of heat produced by the flame gas pipeline heating facility to be conducted and radiated to the pulverized coal in the channel for impelling and decomposing coal, the pulverized coal fully absorbs the heat so as to be heated and decomposed to the fuel gas, tar gas and coal with a higher heat-value in the channel for impelling and decomposing coal. The fuel gas and tar gas communicate with a gas dedust and liquefaction facility outside of the rotary kiln through the coal decomposition gas collecting pipe, and the decomposed fuel gas and tar gas are dedusted, separated, and pressure liquefied.
[0004] The above-mentioned patent indeed provides relatively high oil yield, and is regarded as an example, but only the maximum tar yield is taken into consideration in this patent, and a relatively large amount of volatile matter in the upgraded coal resulting from such pyrolysis at low temperature and the coal gas amount required by hydrogenation of tar are not taken into consideration. The above-mentioned patent has its limitations in that it either provides a high coal tar yield but low coal gas amount, or provides a high gas yield but low coal tar yield, but cannot satisfy both requirements.
[0005] The reference to prior art in the background section is not and should not be taken as an acknowledgment or any form of suggestion that the referenced prior art forms part of the common general knowledge in Australia or in any other country.
SUMMARY [0006] Applicant recognizes it would be beneficial to provide a coal pyrolysis process device that ameliorates at least to some extent at least one of the disadvantages of the prior art, and can achieve efficient production of both gas and coal tar.
[0007] In order to solve the above technical problem, the following technical solution is adopted in the present disclosure: a coal pyrolysis process device, comprising a primary coal pyrolysis device and a secondary coal pyrolysis device, wherein the primary coal pyrolysis device is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type, and the primary coal pyrolysis device comprises a
2017416200 17 Feb 2020 primary feed port, a primary discharge port, a primary coal gas outlet, and a heating mechanism in form of a primary radiant tube;
the secondary coal pyrolysis device comprises a secondary feed port, a secondary discharge port, a secondary coal gas outlet, and a secondary heating mechanism;
the primary discharge port communicates with the secondary feed port, coal tar is maximally extracted from coal in the primary coal pyrolysis device and then the coal is introduced into the secondary coal pyrolysis device, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device, so that volatile matter of the upgraded coal upgraded by the primary pyrolysis is further reduced in the secondary coal pyrolysis device, and more coal gas is produced.
[0008] The secondary coal pyrolysis device is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type or a coal decomposition apparatus of a shaft kiln heat exchange type.
[0009] The coal pyrolysis process device further comprises a coal drying device disposed upstream of the primary coal pyrolysis device, and the dried coal is introduced into the primary coal pyrolysis device.
[0010] The coal pyrolysis process device further comprises a deduster disposed at the primary coal gas outlet and a deduster disposed at the secondary coal gas outlet, and the deduster is a cyclone deduster or gravity deduster or a high temperature membrane filter having a filter element coated with a membrane at its surface.
[0011] Output of the primary coal gas outlet and output of the secondary coal gas outlet are mixed together and enter the high temperature membrane filter.
[0012] Output of the primary coal gas outlet and Output of the secondary coal gas outlet are mixed together, and firstly pass through the cyclone deduster or gravity deduster and then enter the high temperature membrane filter.
2017416200 17 Feb 2020 [0013] The primary coal gas outlet leads to a first membrane filter, and the secondary coal gas outlet leads to a second membrane filter.
[0014] Output of the primary coal gas outlet passes through a first cyclone deduster or gravity deduster and then enters a first membrane filter, and output of the secondary coal gas outlet passes through a second cyclone deduster or gravity deduster and enters a second membrane filter.
[0015] The present disclosure has the advantage that when coal is placed in the primary coal pyrolysis device, the tar yield reaches the maximum value, and the primary upgraded coal which still has a relatively high amount of volatile matter is introduced into the secondary coal pyrolysis device in a hot state and continues to be heated up and pyrolyzed, such that upgraded coal with a lower amount of volatile matter is produced, and at the same time more coal gas is additionally produced. The coal gas produced by secondary pyrolysis contains more amount of CO and H2, and CO can be converted into H2 via coal gas, such that sufficient H2 source can be provided for hydrogenation of coal tar, and the cost of hydrogenation of coal tar is effectively reduced.
[0016] The drying device is added to contribute to reduction of energy consumption in coal pyrolysis; and the filter is added in order to filter out and remove dust from coal gas containing dust and containing tar before separation of oil and gas to ensure the cleanliness of oil and gas so as to establish a good foundation for subsequent treatments of oil and gas.
BRIEF DESCRIPTION OF DRAWINGS [0017] FIG. 1 is a schematic structural view of a first embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a second embodiment of the present disclosure;
FIG. 3 is a schematic structural view of a third embodiment of the present disclosure; and
2017416200 17 Feb 2020
FIG. 4 is a schematic structural view of a fourth embodiment of the present disclosure.
DETAILED DESCRIPTION OF EMBODIMENTS [0018] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to FIGS. 1-4 of the embodiments of the present disclosure. It is apparent that the embodiments to be described are some, but not all of the embodiments of the present disclosure. All the other embodiments obtained by those of ordinary skill in the art in light of the described embodiments of the present disclosure will fall within the scope of the present disclosure as claimed.
[0019] First Embodiment: As shown in FIG. 1, a coal pyrolysis process device comprises a primary coal pyrolysis device 1 and a secondary coal pyrolysis device 2, wherein the primary coal pyrolysis device 1 is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type, and the primary coal pyrolysis device 1 comprises a primary feed port 11, a primary discharge port 12, a primary coal gas outlet 13, and a heating mechanism in form of a primary radiant tube 14;
the secondary coal pyrolysis device 2 comprises a secondary feed port 21, a secondary discharge port 22, a secondary coal gas outlet 23, and a secondary heating mechanism 24;
the primary discharge port 12 communicates with the secondary feed port 21, coal tar is maximally extracted from coal in the primary coal pyrolysis device 1 and then the coal is introduced into the secondary coal pyrolysis device 2, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device 2, so that volatile matter of the upgraded coal upgraded by the primary pyrolysis is further reduced in the secondary coal pyrolysis device 2, and more coal gas is produced.
2017416200 17 Feb 2020 [0020] The secondary coal pyrolysis device 2 is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type.
[0021] The coal pyrolysis process device further comprises a coal drying device 3 disposed upstream of the primary coal pyrolysis device 1, and the dried coal is introduced into the primary coal pyrolysis device 1.
[0022] The primary coal gas outlet and the secondary coal gas outlet lead to a high temperature membrane filter 5.
[0023] Second Embodiment: As shown in FIG. 2, a coal pyrolysis process device comprises a primary coal pyrolysis device 1 and a secondary coal pyrolysis device 2, wherein the primary coal pyrolysis device 1 is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type, and the primary coal pyrolysis device 1 comprises a primary feed port 11, a primary discharge port 12, a primary coal gas outlet 13, and a heating mechanism in form of a primary radiant tube 14;
the secondary coal pyrolysis device 2 comprises a secondary feed port 21, a secondary discharge port 22, a secondary coal gas outlet 23, and a secondary heating mechanism 24;
the primary discharge port 12 communicates with the secondary feed port 21, coal tar is maximally extracted from coal in the primary coal pyrolysis device 1 and then the coal is introduced into the secondary coal pyrolysis device 2, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device 2, so that volatile matter of the upgraded coal upgraded by the primary pyrolysis is further reduced in the secondary coal pyrolysis device 2, and more coal gas is produced.
[0024] The secondary coal pyrolysis device 2 is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type.
[0025] The coal pyrolysis process device further comprises a coal drying device 3 disposed upstream of the primary coal pyrolysis device 1, and the dried coal is introduced into the primary coal pyrolysis device 1.
2017416200 17 Feb 2020 [0026] The primary coal gas outlet 13 and the secondary coal gas outlet 23 converge through a cyclone deduster or gravity deduster 4 and then into the high temperature membrane filter 5.
[0027] Third Embodiment: As shown in FIG. 3, a coal pyrolysis process device comprises a primary coal pyrolysis device 1 and a secondary coal pyrolysis device 2, wherein the primary coal pyrolysis device 1 is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type, and the primary coal pyrolysis device 1 comprises a primary feed port 11, a primary discharge port 12, a primary coal gas outlet 13, and a heating mechanism in form of a primary radiant tube 14;
the secondary coal pyrolysis device 2 comprises a secondary feed port 21, a secondary discharge port 22, a secondary coal gas outlet 23, and a secondary heating mechanism 24;
the primary discharge port 12 communicates with the secondary feed port 21, coal tar is maximally extracted from coal in the primary coal pyrolysis device 1 and then the coal is introduced into the secondary coal pyrolysis device 2, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device 2, so that volatile matter of the upgraded coal upgraded by the primary pyrolysis is further reduced in the secondary coal pyrolysis device 2, and more coal gas is produced.
[0028] The secondary coal pyrolysis device 2 is a coal decomposition apparatus of a shaft kiln heat exchange type.
[0029] The coal pyrolysis process device further comprises a coal drying device 3 disposed upstream of the primary coal pyrolysis device 1, and the dried coal is introduced into the primary coal pyrolysis device 1.
[0030] The primary coal gas outlet 13 leads to a first membrane filter 51, and the secondary coal gas outlet 23 leads to a second membrane filter 52.
[0031] Fourth Embodiment: As shown in FIG. 4, a coal pyrolysis process device comprises a primary coal pyrolysis device 1 and a secondary coal pyrolysis device 2,
2017416200 17 Feb 2020 wherein the primary coal pyrolysis device 1 is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type, and the primary coal pyrolysis device 1 comprises a primary feed port 11, a primary discharge port 12, a primary coal gas outlet 13, and a heating mechanism in form of a primary radiant tube 14;
the secondary coal pyrolysis device 2 comprises a secondary feed port 21, a secondary discharge port 22, a secondary coal gas outlet 23, and a secondary heating mechanism 24;
the primary discharge port 12 communicates with the secondary feed port 21, coal tar is maximally extracted from coal in the primary coal pyrolysis device 1 and then the coal is introduced into the secondary coal pyrolysis device 2, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device 2, so that volatile matter of the upgraded coal upgraded by the primary pyrolysis is further reduced in the secondary coal pyrolysis device 2, and more coal gas is produced.
[0032] The secondary coal pyrolysis device 2 is a coal decomposition apparatus of a shaft kiln heat exchange type.
[0033] The coal pyrolysis process device further comprises a coal drying device 3 disposed upstream of the primary coal pyrolysis device 1, and the dried coal is introduced into the primary coal pyrolysis device 1.
[0034] The primary coal gas outlet 13 leads to a first membrane filter 51, and the secondary coal gas outlet 23 leads to a second membrane filter 52.
[0035] Output of the primary coal gas outlet 13 passes through a first cyclone deduster or gravity deduster 41 and then enters a first membrane filter 51, and output of the secondary coal gas outlet 23 passes through a second cyclone deduster or gravity deduster 42 and enters a second membrane filter 52.
[0036] The above description is illustrative of preferred embodiments of the present disclosure, and it should be noted that several improvements and modifications can be made by those of ordinary skill in the art without departing from the principles described in the present disclosure, and these improvements and modifications should also be considered to fall within the scope of protection of the present disclosure.

Claims (8)

  1. CLAIMS:
    1. A coal pyrolysis process device, comprising a primary coal pyrolysis device and a secondary coal pyrolysis device, the primary coal pyrolysis device being a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type wherein;
    the primary coal pyrolysis device comprises a primary feed port, a primary discharge port, a primary coal gas outlet, and a heating mechanism in form of a primary radiant tube;
    the secondary coal pyrolysis device comprises a secondary feed port, a secondary discharge port, a secondary coal gas outlet, and a secondary heating mechanism;
    the primary discharge port communicates with the secondary feed port, coal tar is maximally extracted from coal in the primary coal pyrolysis device and then the coal is introduced into the secondary coal pyrolysis device, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device, so that volatile matter of upgraded coal upgraded by a primary pyrolysis is further reduced in the secondary coal pyrolysis device, and more coal gas is produced; and the secondary feed port is located at one end of the secondary coal pyrolysis device connected with the primary discharge port, and the secondary coal gas outlet is located at the other end of the secondary coal pyrolysis device opposite to the one end of the secondary coal pyrolysis device connected with the primary discharge port.
  2. 2. The coal pyrolysis process device according to claim 1, wherein the secondary coal pyrolysis device is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type or a coal decomposition apparatus of a shaft kiln heat exchange type.
    2017416200 17 Feb 2020
  3. 3. The coal pyrolysis process device according to claim 1 or claim 2, wherein the coal pyrolysis process device further comprises a coal drying device disposed upstream of the primary coal pyrolysis device, and dried coal is introduced into the primary coal pyrolysis device.
  4. 4. The coal pyrolysis process device according to any one of claims 1 to 3, wherein the coal pyrolysis process device further comprises a deduster disposed at the primary coal gas outlet and a deduster disposed at the secondary coal gas outlet, and the deduster is a cyclone deduster or gravity deduster or a high temperature membrane filter having a filter element coated with a membrane at its surface.
  5. 5. The coal pyrolysis process device according to claim 4, wherein output of the primary coal gas outlet and output of the secondary coal gas outlet are mixed together and enter the high temperature membrane filter.
  6. 6. The coal pyrolysis process device according to claim 4 or claim 5, wherein output of the primary coal gas outlet and output of the secondary coal gas outlet are mixed together, and firstly pass through the cyclone deduster or the gravity deduster and then enter the high temperature membrane filter.
  7. 7. The coal pyrolysis process device according to any one of claims 4 to 6, wherein the primary coal gas outlet leads to a first membrane filter, and the secondary coal gas outlet leads to a second membrane filter.
  8. 8. The coal pyrolysis process device according to any one of claims 4 to 7, wherein output of the primary coal gas outlet passes through a first cyclone deduster or gravity deduster and then enters a first membrane filter, and output of the secondary coal gas outlet passes through a second cyclone deduster or gravity deduster and enters a second membrane filter.
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