CN112480941A - Dry quenching coke powder recycling treatment device and process - Google Patents

Dry quenching coke powder recycling treatment device and process Download PDF

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Publication number
CN112480941A
CN112480941A CN202011432593.0A CN202011432593A CN112480941A CN 112480941 A CN112480941 A CN 112480941A CN 202011432593 A CN202011432593 A CN 202011432593A CN 112480941 A CN112480941 A CN 112480941A
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coke powder
unit
steam
dry quenching
temperature
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王满
李旭东
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Acre Coking and Refractory Engineering Consulting Corp MCC
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Acre Coking and Refractory Engineering Consulting Corp MCC
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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
    • C10B39/00—Cooling or quenching coke
    • C10B39/02—Dry cooling outside the oven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
    • B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • 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
    • C10J2300/0943—Coke
    • 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
    • C10J2300/0953—Gasifying agents
    • C10J2300/0973—Water
    • C10J2300/0976—Water as steam
    • 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
    • C10J2300/1215—Heating the gasifier using synthesis gas as fuel
    • 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
    • C10J2300/1223—Heating the gasifier by burners
    • 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
    • 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
    • C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
    • C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Coke Industry (AREA)

Abstract

The invention relates to a device and a process for recycling coke dry quenching coke powder. The beneficial effects are as follows: by adopting the device, the active coke powder with high specific surface area can be obtained, the active coke powder can be used as an adsorbent for sewage treatment and an adsorbent for dry flue gas desulfurization, waste is changed into valuable, and the dry quenched coke powder originally used as waste residue in the coking production process is converted into an effective resource with high added value; through the combustion of water gas generated in the coke powder activation process, the sensible heat content of dry quenching circulating gas can be increased, the gas yield of a dry quenching boiler is improved, the energy recovery capacity of a dry quenching system is improved, the economic benefit of a dry quenching device is improved, and positive environmental benefits are achieved; the cost of waste residue disposal of coking production enterprises is reduced.

Description

Dry quenching coke powder recycling treatment device and process
Technical Field
The invention relates to the technical field of coal coking, in particular to a device and a process for recycling coke dry quenching coke powder.
Background
Dry quenching is a process of cooling incandescent coke using an inert gas. The dry quenching system mainly comprises a dry quenching furnace, a primary dust remover, a dry quenching waste heat boiler, a secondary dust remover, a circulating fan and other equipment and related pipelines. The primary dust remover removes dust from high-temperature circulating gas passing through the dry quenching furnace by utilizing the principle of inertial sedimentation, can collect coke powder with larger particles entrained in the circulating gas, the temperature of the collected coke powder is the same as that of the circulating gas in the primary dust remover and is between 800 ℃ and 1000 ℃, a water-cooled coke powder cooling device is arranged below the primary dust remover when the coke powder is discharged out of the primary dust remover, and the cooled coke powder is collected and processed by a coke powder collecting system after being discharged.
At present, according to the prior art, the phenomenon of damage to a coke powder cooling device often occurs to coke powder discharged by a primary coke dry quenching dust remover in the cooling process, so that the faults of cooling water leakage, coke powder caking and blockage, coke powder discharge unsmooth and the like are caused, the smooth operation of the coke dry quenching production is influenced, and the peripheral environment is greatly influenced. In addition, the collected coke powder is usually mixed with the coke powder collected by a secondary dust remover or dust collected by other dust removal systems to be treated as solid waste, so that the cost of waste residue disposal of coking production enterprises is increased, and the coke powder is not fully recycled.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention solves the technical problem of providing a device and a process for recycling coke dry quenching coke powder, which convert the coke dry quenching coke powder into a product with high added value by changing a treatment method of the coke powder of a primary dust remover, change waste into valuable, improve the energy recovery capacity of a coke dry quenching system and simultaneously reduce the cost of waste residue disposal of a coking production enterprise.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dry quenching coke powder recycling treatment device comprises a high-temperature coke powder buffer bin, a coke powder activation unit, a coke powder discharge unit, a water gas combustion unit and a steam heating unit, and is characterized in that the high-temperature coke powder buffer bin is arranged at the lower end of a primary dust remover, a feed inlet at the upper part of the high-temperature coke powder buffer bin is connected with a coke powder discharge port of the primary dust remover, a discharge outlet at the lower part of the high-temperature coke powder buffer bin is connected with a feed inlet of the coke powder activation unit, and a discharge outlet of the coke powder activation unit is connected with the coke powder discharge unit; the steam heating unit is arranged on the inner wall, the retaining wall or other parts capable of being fully contacted with the circulating gas of the primary dust remover, the inlet of the steam heating unit is connected with water or saturated steam or superheated steam, and the steam outlet of the steam heating unit is connected with the steam inlet of the coke powder activation unit through a pipeline; and the gas inlet of the water gas combustion unit is connected with the gas outlet of the coke powder activation unit, and the waste gas outlet of the water gas combustion unit is connected to the primary dust remover.
The coke powder storage capacity of the high-temperature coke powder buffer bin is larger than the coke powder amount discharged by the primary dust remover in a single concentrated mode, and is not smaller than the coke powder amount discharged by the primary dust remover in the time required by the coke powder activation unit to complete the activation of the coke powder in the coke powder activation unit.
And the wall of the high-temperature coke powder buffer bin is provided with a heat insulation layer.
And a steam distributor is arranged in the coke powder activation unit.
And a combustion-supporting gas supply port and an automatic ignition device are arranged in the water-gas combustion unit.
Furthermore, a steam inlet of the coke powder activation unit can also be directly connected with saturated or superheated steam without arranging a steam heating unit.
Further, the steam heating unit may also be a dedicated steam channel built or laid in the primary dust collector.
A dry quenching coke powder recycling treatment process comprises the following steps:
1) according to a coke powder discharge system in a dry quenching primary dust remover, discharging high-temperature coke powder in the primary dust remover into a high-temperature coke powder buffer bin for temporary storage, receiving a coke powder instruction received by a coke powder activation unit, and discharging the high-temperature coke powder into a coke powder activation unit through a discharge port at the lower part of the high-temperature coke powder buffer bin;
2) the external water or saturated or superheated steam enters the steam heating unit through the inlet of the steam heating unit, and in the steam heating unit, the water or the steam is further heated into high-temperature steam by high-temperature circulating gas in the primary dust remover and then enters the coke powder activating unit through the steam inlet of the coke powder activating unit;
3) in the coke powder activation unit, high-temperature steam is directly contacted with high-temperature coke powder through a steam distributor, and the following reactions occur:
C+H2O→CO+H2-131KJ/mol
CO and H formed during the reaction2The coke powder is discharged from a gas outlet of the coke powder activation unit and enters a water gas combustion unit through a connecting pipeline;
4) in the water gas combustion unit, CO and H2The waste gas and the combustion-supporting gas entering through the combustion-supporting gas supply port are subjected to combustion reaction to generate waste gas and heat, and the waste gas carries the combustion heat and enters the primary dust remover through the waste gas outlet;
5) mixing the waste gas carrying a large amount of combustion heat and entering the primary dust remover with circulating gas in the primary dust remover, then entering a dry quenching boiler, and recovering the heat of the waste gas through the dry quenching boiler;
6) in the coke powder activation unit, after the coke powder and high-temperature steam are subjected to water gas reaction, the surface area of the coke powder is increased due to the reaction, the coke powder can be activated into active coke powder, and the active coke powder is discharged into the coke powder discharge unit from a discharge hole of the coke powder activation unit for resource utilization.
Compared with the prior art, the invention has the beneficial effects that:
1) by adopting the resource treatment device for the dry quenching coke powder, the active coke powder with high specific surface area can be obtained, the active coke powder can be used as an adsorbent for sewage treatment and an adsorbent for dry flue gas desulfurization, waste is turned into wealth, and the dry quenching coke powder originally used as waste residue in the coking production process is converted into an effective resource with high added value;
2) through the combustion of water gas generated in the coke powder activation process, the sensible heat content of dry quenching circulating gas can be increased, the gas yield of a dry quenching boiler is improved, the energy recovery capacity of a dry quenching system is improved, the economic benefit of a dry quenching device is improved, and positive environmental benefits are achieved;
3) the cost of waste residue disposal of coking production enterprises is reduced.
Drawings
Fig. 1 is a schematic diagram of the structural principle of the present invention.
In the figure: 1-primary dust remover 2-dry quenching boiler 3-primary dust remover coke powder outlet 4-high temperature coke powder buffer bin 5-coke powder activation unit 6-coke powder discharge unit 7-water gas combustion unit 8-steam distributor 9-steam heating unit
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in figure 1, the resource treatment device for the coke dry quenching coke powder comprises a high-temperature coke powder buffer bin 4, a coke powder activation unit 5, a coke powder discharge unit 6, a water gas combustion unit 7 and a steam heating unit 9, wherein the high-temperature coke powder buffer bin 4 is arranged at the lower end of a primary dust remover 1, a feed inlet at the upper part of the high-temperature coke powder buffer bin 4 is connected with a coke powder discharge port 3 of the primary dust remover, a discharge outlet at the lower part of the high-temperature coke powder buffer bin 4 is connected with a feed inlet of the coke powder activation unit 5, and a discharge outlet of the coke powder activation unit 5 is connected with the coke powder discharge unit 6; the steam heating unit 9 is arranged on the inner wall, the retaining wall or other parts capable of being fully contacted with the circulating gas of the primary dust remover 1, the inlet of the steam heating unit 9 is connected with water or saturated steam or superheated steam, and the steam outlet of the steam heating unit 9 is connected with the steam inlet of the coke powder activation unit 5 through a pipeline; and the air inlet of the water-gas combustion unit 7 is connected with the air outlet of the coke powder activation unit 5, and the waste gas outlet of the water-gas combustion unit 7 is connected to the primary dust remover 1.
The coke powder storage capacity of the high-temperature coke powder buffer bin 4 is larger than the coke powder amount discharged by the primary dust remover 1 in a single concentrated manner, and is not smaller than the coke powder amount discharged by the primary dust remover 1 in the time required by the coke powder activation unit 5 for completing the activation of the coke powder in the coke powder activation unit.
And the wall of the high-temperature coke powder buffer bin 4 is provided with a heat insulation layer.
A steam distributor 8 is arranged in the coke powder activation unit 5.
And a combustion-supporting gas supply port and an automatic ignition device are arranged in the water-gas combustion unit 7.
Further, the steam inlet of the coke powder activation unit 5 can also be directly connected with saturated or superheated steam without the steam heating unit 9.
Further, the steam heating unit 9 may also be a dedicated steam channel built or laid in the primary duster 1.
A dry quenching coke powder recycling treatment process comprises the following steps:
1) according to a coke powder discharge system in the primary coke dry quenching dust remover 1, discharging high-temperature coke powder in the primary coke dry quenching dust remover 1 into a high-temperature coke powder buffer bin 4 for temporary storage, and after receiving a coke powder instruction received by a coke powder activation unit 5, discharging the high-temperature coke powder into a coke powder activation unit 5 through a discharge port at the lower part of the high-temperature coke powder buffer bin 4;
2) the external water or saturated or superheated steam enters the steam heating unit 9 through the inlet of the steam heating unit 9, and in the steam heating unit 9, the water or steam is further heated into high-temperature steam by high-temperature circulating gas in the primary dust remover 1 and then enters the coke powder activating unit 5 through the steam inlet of the coke powder activating unit 5;
3) in the coke powder activation unit 5, the high-temperature steam is directly contacted with the high-temperature coke powder through the steam distributor 8, and the following reaction occurs:
C+H2O→CO+H2-131KJ/mol
CO and H formed during the reaction2The coke powder is discharged from an air outlet of the coke powder activation unit 5 and enters a water gas combustion unit 7 through a connecting pipeline;
4) in the water gas combustion unit 7, CO and H2The waste gas and the combustion-supporting gas entering through the combustion-supporting gas supply port are subjected to combustion reaction to generate waste gas and heat, and the waste gas carries the combustion heat and enters the primary dust remover 1 through a waste gas outlet;
5) the waste gas carrying a large amount of combustion heat and entering the primary dust remover 1 is mixed with the circulating gas in the primary dust remover 1 and then enters the dry quenching boiler 2, and the heat of the waste gas is recovered through the dry quenching boiler 2;
6) in the coke powder activation unit 5, after the coke powder and the high-temperature steam are subjected to water gas reaction, the surface area of the coke powder is increased due to the reaction, the coke powder can be activated into active coke powder, and the active coke powder is discharged from a discharge hole of the coke powder activation unit 5 into the coke powder discharge unit 6 for resource utilization.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. A dry quenching coke powder recycling treatment device comprises a high-temperature coke powder buffer bin, a coke powder activation unit, a coke powder discharge unit, a water gas combustion unit and a steam heating unit, and is characterized in that the high-temperature coke powder buffer bin is arranged at the lower end of a primary dust remover, a feed inlet at the upper part of the high-temperature coke powder buffer bin is connected with a coke powder discharge port of the primary dust remover, a discharge outlet at the lower part of the high-temperature coke powder buffer bin is connected with a feed inlet of the coke powder activation unit, and a discharge outlet of the coke powder activation unit is connected with the coke powder discharge unit; the steam heating unit is arranged on the inner wall and the retaining wall of the primary dust remover, the inlet of the steam heating unit is connected with water or saturated steam or superheated steam, and the steam outlet of the steam heating unit is connected with the steam inlet of the coke powder activation unit through a pipeline; and the gas inlet of the water gas combustion unit is connected with the gas outlet of the coke powder activation unit, and the waste gas outlet of the water gas combustion unit is connected to the primary dust remover.
2. The dry quenching coke powder recycling device as claimed in claim 1, wherein the coke powder storage capacity of the high temperature coke powder buffer bin is larger than the coke powder amount discharged by the primary dust remover in a single concentrated manner and not smaller than the coke powder amount discharged by the primary dust remover in the time required by the coke powder activation unit to complete the activation of the coke powder therein.
3. The dry quenching coke powder recycling device as claimed in claim 1, wherein the high temperature coke powder buffer bin wall is provided with a heat insulation layer.
4. The dry quenching coke powder recycling device as claimed in claim 1, wherein a steam distributor is provided in the coke powder activation unit.
5. The device for recycling coke dry quenching coke powder as claimed in claim 1, wherein a combustion-supporting gas supply port and an automatic ignition device are arranged in the water-gas combustion unit.
6. The dry quenching coke powder recycling device as claimed in claim 1, wherein the steam inlet of the coke powder activating unit can be directly connected to saturated or superheated steam without a steam heating unit.
7. The apparatus as claimed in claim 1, wherein the steam heating unit is a dedicated steam channel built or laid in a primary dust collector.
8. The resource treatment process for the dry quenching coke powder, which is used for realizing the resource treatment process of the dry quenching coke powder, is characterized by comprising the following steps:
1) according to a coke powder discharge system in a dry quenching primary dust remover, discharging high-temperature coke powder in the primary dust remover into a high-temperature coke powder buffer bin for temporary storage, receiving a coke powder instruction received by a coke powder activation unit, and discharging the high-temperature coke powder into a coke powder activation unit through a discharge port at the lower part of the high-temperature coke powder buffer bin;
2) the external water or saturated or superheated steam enters the steam heating unit through the inlet of the steam heating unit, and in the steam heating unit, the water or the steam is further heated into high-temperature steam by high-temperature circulating gas in the primary dust remover and then enters the coke powder activating unit through the steam inlet of the coke powder activating unit;
3) in the coke powder activation unit, high-temperature steam is directly contacted with high-temperature coke powder through a steam distributor, and the following reactions occur:
C+H2O→CO+H2-131KJ/mol
CO and H formed during the reaction2The coke powder is discharged from a gas outlet of the coke powder activation unit and enters a water gas combustion unit through a connecting pipeline;
4) in the water gas combustion unit, CO and H2The waste gas and the combustion-supporting gas entering through the combustion-supporting gas supply port are subjected to combustion reaction to generate waste gas and heat, and the waste gas carries the combustion heat and enters the primary dust remover through the waste gas outlet;
5) mixing the waste gas carrying a large amount of combustion heat and entering the primary dust remover with circulating gas in the primary dust remover, then entering a dry quenching boiler, and recovering the heat of the waste gas through the dry quenching boiler;
6) in the coke powder activation unit, after the coke powder and high-temperature steam are subjected to water gas reaction, the surface area of the coke powder is increased due to the reaction, the coke powder can be activated into active coke powder, and the active coke powder is discharged into the coke powder discharge unit from a discharge hole of the coke powder activation unit for resource utilization.
CN202011432593.0A 2020-12-10 2020-12-10 Dry quenching coke powder recycling treatment device and process Pending CN112480941A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113217892A (en) * 2021-05-19 2021-08-06 宝武集团鄂城钢铁有限公司 System for improving steam production rate of dry quenching boiler steam

Cited By (1)

* Cited by examiner, † Cited by third party
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CN113217892A (en) * 2021-05-19 2021-08-06 宝武集团鄂城钢铁有限公司 System for improving steam production rate of dry quenching boiler steam

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