CN115627183A - CO recovery 2 And method of using the same - Google Patents

CO recovery 2 And method of using the same Download PDF

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Publication number
CN115627183A
CN115627183A CN202211270185.9A CN202211270185A CN115627183A CN 115627183 A CN115627183 A CN 115627183A CN 202211270185 A CN202211270185 A CN 202211270185A CN 115627183 A CN115627183 A CN 115627183A
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China
Prior art keywords
pipe
pulverized coal
oxygen
channel
channel pipe
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Pending
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CN202211270185.9A
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Inventor
王延吉
吕新春
王华星
周广兵
张承峰
郭保方
李道岭
孙远岭
韩炳旭
张燕杰
庞书阳
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No1 Coal Chemical Branch Of Luxi Chemical Group Co ltd
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No1 Coal Chemical Branch Of Luxi Chemical Group Co ltd
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Priority to CN202211270185.9A priority Critical patent/CN115627183A/en
Publication of CN115627183A publication Critical patent/CN115627183A/en
Pending legal-status Critical Current

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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
    • C10J1/00—Production of fuel gases by carburetting air or other gases without pyrolysis
    • C10J1/20—Carburetting gases other than air
    • 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
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • 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
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C10J3/56—Apparatus; Plants
    • 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
    • C10J3/723—Controlling or regulating the gasification process
    • 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
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0959—Oxygen
    • 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
    • C10J2300/0969—Carbon dioxide
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Industrial Gases (AREA)

Abstract

The invention relates to CO 2 A carbon treatment technology for recovering and converting, in particular to a technology for recovering CO 2 The carbon conversion device comprises a pulverized coal channel pipe I and a CO which are sleeved from inside to outside in sequence 2 The pulverized coal pipeline comprises a passage pipe, an oxygen passage pipe and a pulverized coal passage pipe II, wherein the pulverized coal passage pipe I and the pulverized coal passage pipe CO 2 The material inlets of the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are arranged from top to bottom, and the material outlets of the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are all located at the bottom end opening of the channel pipe. The recovered CO 2 The using method of the carbon conversion device comprises the following steps: respectively to pulverized coal passage pipe I and CO 2 The corresponding pulverized coal I and CO are introduced into the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II 2 Gas, oxygen andand (5) pulverized coal II. Carbon conversion reaction is wrapped by coal gasification reaction to form CO 2 High-temperature, oxygen-free and pure environment required for reduction, and greatly improves CO 2 The reduction conversion of (2).

Description

CO recovery 2 And method of using the same
Technical Field
The invention relates to CO 2 A carbon treatment technology for recovery and conversion is applied to the fields of carbon emission reduction and carbon neutralization, and particularly relates to a carbon conversion device for recovering CO2 and a use method thereof.
Background
At present, the main technical directions of carbon emission reduction comprise carbon capture/sequestration oil displacement and CO 2 Based on degradable plastics, CO 2 Hydrogenation for preparing methanol and CO 2 Reforming with methane, CO 2 Conversion with coke, etc. CO2 2 In order to chemically react the stable gas in an oxidized state to convert carbon, a large amount of energy is consumed. The above-mentioned technical direction of carbon abatement, e.g. CO 2 The degradable plastic is faced with the technical problems of small molecular weight, instability and the like of the product; CO2 2 The feasibility of the oil displacement technology on the influence of geology still needs to be verified; other comprehensive utilization technologies of preparing methanol by hydrogenation, preparing synthesis gas by reforming methane and the like have been technically verified in laboratories decades ago, but the conversion efficiency is too low, and the energy consumption is too high, so that CO is generated 2 The comprehensive utilization cost is high, and the method is difficult to be applied to industrial production.
CO2 can react with carbon at high temperature to obtain CO gas, and the CO gas is used as a raw material to produce chemical products, such as formic acid, ethylene glycol, oxalic acid and the like. The process route can be used for introducing CO 2 The gas is converted into CO gas, and if the CO gas can be successfully applied to industrial production, a reliable way can be provided for carbon emission reduction.
Existing CO 2 The coke conversion technology is carried out in a normal-pressure fixed bed gas making furnace, and the technology is originally designed for preparing thousand-square grade CO gas under the condition of low investment. In particular to a method for preparing metallurgical coke by using high-quality metallurgical coke as a raw material and O 2 And CO 2 Is used as a gasifying agent, and carbon gasification and carbon conversion reactions occur in a normal-pressure fixed bed gas making furnace. Discharging the crude CO gas obtained by reaction from the top of the furnace, recovering waste heat, washing, removing dust, further desulfurizing, compressing, desulfurizing and decarbonizing to remove acid gas and surplus CO 2 And finally obtaining refined CO gas.
CO 2 The carbon reacts with the carbon to generate CO, and the reaction needs to absorb a large amount of heat, and the amount of heat absorbed by the reaction per mole of carbon is about 1.5 times of the amount of heat released by the oxidation reaction of the carbon and oxygen. Theoretically, in the atmospheric coke conversion technology, the temperature is 900-1100 ℃, and the heat is not enough to supply CO 2 A reduction reaction takes place, this technique adding CO 2 The main purposes of the gas are heat carrier and temperature regulation, and the highest temperature of the fixed bed layer is controlled below the ash melting point of coke, so that ash agglomeration is prevented. The technology has the advantages of small production scale, harsh use of raw material coal, low and incomplete carbon conversion efficiency, and generation of a large amount of solid residues and wastewater rich in organic impurities such as anthraquinone, phenol, naphthalene and the like, and is basically in a phase of elimination.
Disclosure of Invention
In order to solve the problems, the invention provides a method for recovering CO at high pressure and high temperature 2 The device is a high-pressure high-temperature carbon converter, and realizes CO conversion by using pure oxygen and pulverized coal to perform gasification reaction under high pressure, wherein the gasification temperature is up to 1500-1700 DEG C 2 Carbon conversion of (2). The core of the burner is a burner combining coal gasification and carbon conversion, the burner is of a vertical type multi-layer sleeve type structure, a pulverized coal channel and an oxygen channel for coal gasification reaction are arranged on the outer layer, and CO for carbon conversion reaction 2 The channel and the pulverized coal channel are arranged on the inner layer, so that a stable state that the outer layer is high-temperature flame and the inner layer is a strong heat absorption low-temperature area is formed. The invention is provided withThe body structure is as follows:
CO recovery 2 The carbon conversion device comprises a pulverized coal channel pipe I and a CO which are sleeved from inside to outside in sequence 2 The pipeline comprises a channel pipe, an oxygen channel pipe and a pulverized coal channel pipe II, wherein the pulverized coal channel pipe I and the pulverized coal channel pipe CO 2 The material inlets of the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are arranged from top to bottom, and the material outlets of the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are all located at the bottom end opening of the channel pipe.
The above-mentioned CO recovery 2 The pulverized coal passage pipe I, CO 2 The top mouth of pipe height separately of passageway pipe, oxygen passageway pipe and fine coal passageway pipe II reduces by last to lower in proper order, the top mouth of pipe department of fine coal passageway pipe I is equipped with fine coal import I, CO 2 The lateral part of passageway pipe just is located oxygen passageway pipe top mouth of pipe top department and is equipped with the CO2 import, the lateral part of oxygen passageway pipe just is located II top mouth of pipe tops of fine coal passageway pipe top departments and is equipped with the oxygen import, II top mouths of pipe departments of fine coal passageway pipe are equipped with fine coal import II.
The above-mentioned CO recovery 2 The outer layer of the pulverized coal channel pipe II is provided with a protective gas jacket, the outer layer of the protective gas jacket is provided with a cooling coil pipe, and a temperature-resistant coating is coated on the cooling coil pipe.
The invention also relates to a method for recovering CO by using 2 The carbon conversion apparatus of (1) for carrying out the carbon conversion by "wrapping" the carbon conversion reaction by a coal gasification reaction to form CO 2 The high-temperature, oxygen-free and pure environment required by reduction greatly improves CO 2 The reduction conversion of (2).
The above-mentioned CO recovery 2 The using method of the carbon conversion device comprises the following steps: respectively to pulverized coal passage pipe I and CO 2 The corresponding pulverized coal I and CO are introduced into the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II 2 Gas, oxygen and pulverized coal II.
Recovery of CO as described above 2 The use method of the carbon conversion device comprises the following steps of firstly introducing oxygen into an oxygen passage pipe and introducing pulverized coal II into a pulverized coal passage pipe II to enable the oxygen passage pipe and the pulverized coal passage pipe II to be gasified and combusted in a combustion chamber; then the pressure of the combustion chamber is increased to 3.0-7.0MPa; then to CO 2 ChannelIntroducing CO into the tube 2 A gas; and finally, introducing the pulverized coal I into the pulverized coal channel pipe I to enable the pulverized coal I and the pulverized coal channel pipe I to generate carbon conversion reaction in the flame generated by the gasification combustion.
Recovery of CO as described above 2 Method of using a carbon conversion plant, CO 2 The mass ratio of the gas to the pulverized coal I is 4~8:1.
the invention has the beneficial effects that:
one of them, this combustor sets up to multilayer sleeve pipe structure, and each material import of rational arrangement, application scope is extensive, easily maintenance change. The coal gasification furnace can be replaced on a conventional coal gasification furnace, the modification is simple, the investment is low, the influence on the original equipment system is small, and the modification cost is reduced.
Secondly, materials required by the reaction are respectively conveyed, the coal gasification combustion reaction of the outer ring provides a high-temperature environment, and then CO 2 And the pulverized coal I absorbs heat in the combustion flame to realize the carbon conversion reduction reaction. The surface temperature of the combustor can be reduced due to the carbon conversion reduction, so that the intrinsic safety of combustion is improved, and meanwhile, due to the strong heat absorption effect of the inner ring, the flying of the outer ring combustion flame can be reduced, and the flame is stabilized.
Third, CO 2 Arranged between oxygen and the pulverized coal I, plays a role of combustion isolation, avoids the combustion problem of the pulverized coal I, further stabilizes flame, reduces the escape amount of fly ash, and greatly improves CO 2 And the reduction conversion rate of the pulverized coal I and the CO output are higher, thereby being beneficial to the application of a downstream device CO industrial chain.
Fourthly, the CO participating in the reaction when the conversion rate is high 2 The gas quantity is high, namely CO can be introduced 2 The gas quantity is high, can reach 10% of the oxygen quantity, and the CO gas production is improved by 6% compared with the prior art.
Fifthly, in the atmospheric fixed bed carbon conversion technology, the raw material coal can only select coke, and the source of the coal is single. The technology adopts CO 2 The gas-coated pulverized coal I is arranged in the center of the flame, and under a high-temperature oxygen-free environment, the pulverized coal I is sprayed out of the burner and then preferentially subjected to pyrolysis reaction to release volatile components, and the remaining coke powder and high-temperature CO are mixed 2 The gas is subjected to carbon conversion reaction, so the technology can use anthracite, bituminous coal,Various coals such as brown coal and coke.
Sixthly, in the atmospheric fixed bed carbon conversion technology, coke, oxygen and CO 2 The gases mix together and the various reactions occur simultaneously, interact and have a low carbon conversion efficiency resulting in the production of large quantities of unreacted solid residues. The technology adopts the composite burner with the top-set structure, all materials are arranged from inside to outside in a layered way, the selectivity of the reaction can be controlled manually, and the incompletely reacted pulverized coal I escapes CO 2 After the gas layer enters the flame oxygen layer of the outer ring, the coal gasification reaction is continued, and the escape of fly ash is reduced. The solid residue was reduced by 40%.
Seventhly, the reaction temperature of the technology is as high as 1500-1700 ℃, and compared with the carbon conversion technology of a fixed bed at normal pressure, the technology does not basically generate organic impurities such as anthraquinone, phenol, naphthalene and the like, thereby greatly reducing the treatment difficulty of the subsequent dust washing wastewater.
Eighthly, the reaction pressure of the technology is controlled to be 4.0-7.0MPa, and the fluidized powdered coal is adopted, so that the production scale can be enlarged by 50-100 times compared with the normal-pressure fixed bed carbon conversion technology.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. pulverized coal inlet I, 2, CO 2 3, an oxygen inlet, 4, a pulverized coal inlet II, 5, a protective gas jacket, 6, a cooling coil, 7 and a temperature-resistant coating.
Detailed Description
The technical scheme of the invention is explained in detail in the following with reference to the attached drawings. It should be emphasized that the following examples are illustrative, and all technical and scientific terms used herein have the meaning commonly understood by one of ordinary skill in the art to which this invention belongs.
This example provides a high pressure high temperature recovery of CO 2 The carbon conversion device has a burner combining coal gasification and carbon conversion, is arranged at the top of a combustion chamber of the carbon conversion furnace, and comprises a pulverized coal passage pipe I and CO which are sequentially sleeved from inside to outside 2 The pulverized coal pipeline comprises a passage pipe, an oxygen passage pipe and a pulverized coal passage pipe II, wherein the pulverized coal passage pipe I and the pulverized coal passage pipe CO 2 Passage tube and oxygen passageThe respective material inlets of the pipe and the pulverized coal channel pipe II are arranged from top to bottom, and the respective material outlets are positioned at the bottom end opening of the channel pipe.
Specifically, the pulverized coal passage pipe I and CO 2 The top mouth of pipe height of each of passageway pipe, oxygen passageway pipe and fine coal passageway pipe II reduces by last to lower in proper order, the top mouth of pipe department of fine coal passageway pipe I is equipped with fine coal import I1, CO 2 CO is arranged at the side part of the channel tube and above the orifice at the top end of the oxygen channel tube 2 Import 2, the lateral part of oxygen passageway pipe just is located II top mouth of pipe tops of fine coal passageway pipe top and is equipped with oxygen import 3, II top mouth of pipe departments of fine coal passageway pipe are equipped with fine coal import II 4.
Furthermore, a protective gas jacket 5 is arranged on the outer layer of the pulverized coal channel pipe II, and non-combustible inert gas is used as a cooling medium to protect the burner from overheating. The outer layer of the protective gas jacket 5 is provided with a cooling coil 6, and a cooling medium is used as a protective medium to further protect the burner from overheating. The cooling coil 6 is coated with a temperature-resistant coating 7, and the temperature-resistant coating is usually made of SiC.
The invention also relates to a method for recovering CO by using high pressure and high temperature 2 The pulverized coal passage pipe I, the CO 2 The channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are sequentially sleeved from inside to outside, and the inner ring carbon conversion reaction is wrapped by the outer ring coal gasification reaction to form CO 2 The high-temperature, oxygen-free and pure environment required by reduction greatly improves the reduction conversion rate of CO 2.
Firstly, introducing oxygen into an oxygen channel pipe and introducing pulverized coal II into a pulverized coal channel pipe II to gasify and combust the oxygen channel pipe and the pulverized coal channel pipe II in a combustion chamber to generate a large amount of heat, wherein the flame temperature is as high as 1500-1700 ℃; then the pressure of the combustion chamber is increased to 3.0-7.0MPa; under high pressure environment, to CO 2 Introducing CO into the channel pipe 2 A gas; finally, the pulverized coal I is introduced into the pulverized coal channel pipe I to cause the pulverized coal I and the pulverized coal channel pipe I to generate carbon conversion reaction and CO in the flame generated by the gasification combustion 2 The mass ratio of the gas to the pulverized coal I is 4~8:1.
the methodThe principle of (1) is as follows: the heat energy of the high-temperature flame is utilized to excite and greatly promote CO 2 Reacting with pulverized coal (carbon), and CO on the other hand 2 The gas isolates the outer oxygen to form local CO-rich gas in the burning flame 2 The gas and oxygen-free environment prevents the pulverized coal I from being in contact combustion with oxygen to form a more 'pure' reduction reaction environment, thereby greatly improving CO 2 The conversion rate and the output of CO are large, and the economic benefit is considerable. The reaction process only relates to pulverized coal combustion and single reduction reaction, does not produce harmful gas, and can treat CO 2 And the method is also environment-friendly and has very positive social benefits. CO of the present application is shown in the following Table 2 The recovery method is compared with the prior art in the aspects of oxygen consumption, coal consumption and the like:
Figure RE-DEST_PATH_IMAGE002
as can be known from the table above, utilize the carbon conversion device of this application, the rate of utilization of coal is up to 95%, and the active gas has improved 92%, has very high promotion, and economic benefits is obvious compared with prior art.

Claims (6)

1. CO recovery 2 The carbon conversion apparatus of (1), characterized in that: comprises a pulverized coal passage pipe I and a pulverized coal passage pipe CO which are sleeved from inside to outside in sequence 2 The pulverized coal pipeline comprises a passage pipe, an oxygen passage pipe and a pulverized coal passage pipe II, wherein the pulverized coal passage pipe I and the pulverized coal passage pipe CO 2 The material inlets of the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are arranged from top to bottom, and the material outlets of the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II are positioned at the bottom end opening of the channel pipe.
2. The recovery of CO of claim 1 2 The carbon conversion apparatus of (1), characterized in that: the pulverized coal passage pipe I and CO 2 The top mouth of pipe height separately of passageway pipe, oxygen passageway pipe and fine coal passageway pipe II reduces by last to lower in proper order, the top mouth of pipe department of fine coal passageway pipe I is equipped with fine coal import I (1), CO 2 CO is arranged at the side part of the channel tube and above the orifice at the top end of the oxygen channel tube 2 Import (2), the lateral part of oxygen passageway pipe just is located II top mouths of pipe tops of fine coal passageway pipe department and is equipped with oxygen import (3), II top mouths of pipe departments of fine coal passageway pipe are equipped with fine coal import II (4).
3. The recovery of CO of claim 1 2 The carbon conversion apparatus of (1), characterized in that: and a protective air jacket (5) is arranged on the outer layer of the pulverized coal channel pipe II, a cooling coil (6) is arranged on the outer layer of the protective air jacket (5), and a temperature-resistant coating (7) is coated on the cooling coil (6).
4. Use of the CO of any one of claims 1 to 3 2 A method for a carbon conversion plant, characterized by: respectively to pulverized coal passage pipe I and CO 2 The corresponding pulverized coal I and CO are introduced into the channel pipe, the oxygen channel pipe and the pulverized coal channel pipe II 2 Gas, oxygen and pulverized coal II.
5. CO according to claim 4 2 The use method of the carbon conversion device is characterized in that: firstly, introducing oxygen into an oxygen passage pipe and introducing pulverized coal II into a pulverized coal passage pipe II to gasify and combust the oxygen and the pulverized coal in a combustion chamber; then the pressure of the combustion chamber is increased to 3.0-7.0MPa; then to CO 2 Introducing CO into the channel pipe 2 A gas; and finally, introducing the pulverized coal I into the pulverized coal channel pipe I to enable the pulverized coal I and the pulverized coal channel pipe I to generate carbon conversion reaction in the flame generated by the gasification combustion.
6. CO according to claim 4 2 The use method of the carbon conversion device is characterized in that: CO2 2 The mass ratio of the gas to the pulverized coal I is 4~8:1.
CN202211270185.9A 2022-10-18 2022-10-18 CO recovery 2 And method of using the same Pending CN115627183A (en)

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