CN113493206A - Method for preparing carbon monoxide by partial oxidation of graphite surface - Google Patents
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- CN113493206A CN113493206A CN202010261220.5A CN202010261220A CN113493206A CN 113493206 A CN113493206 A CN 113493206A CN 202010261220 A CN202010261220 A CN 202010261220A CN 113493206 A CN113493206 A CN 113493206A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 77
- 239000010439 graphite Substances 0.000 title claims abstract description 77
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910002091 carbon monoxide Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000003647 oxidation Effects 0.000 title claims abstract description 18
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 148
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000001301 oxygen Substances 0.000 claims abstract description 29
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 6
- 229910052786 argon Inorganic materials 0.000 claims abstract description 3
- 239000001307 helium Substances 0.000 claims abstract description 3
- 229910052734 helium Inorganic materials 0.000 claims abstract description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 57
- 238000000746 purification Methods 0.000 claims description 29
- 239000000047 product Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 9
- 239000011261 inert gas Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 5
- 229910001882 dioxygen Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012264 purified product Substances 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 238000004817 gas chromatography Methods 0.000 description 8
- 238000007664 blowing Methods 0.000 description 7
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001692 polycarbonate urethane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/40—Carbon monoxide
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
-
- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/002—Nozzle-type elements
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The application discloses a method for preparing carbon monoxide by partially oxidizing the surface of graphite. The method for preparing carbon monoxide by partially oxidizing the surface of graphite is characterized by comprising the following steps of: a) pretreating graphite to reduce the particle size of the graphite; b) adding the pretreated graphite into a reactor, introducing a mixed gas of an inactive gas and oxygen into the reactor, and reacting to obtain a product gas; wherein the inactive gas is selected from at least one of nitrogen, helium and argon; c) and purifying the product gas to obtain carbon monoxide gas with the purity of more than 90-99 vol%. The method controls partial oxidation of the graphite surface to prepare carbon monoxide gas, and has the technical advantages of easy process, simple operation, environment-friendly process and the like.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and particularly relates to a method for preparing carbon monoxide by partial oxidation of a graphite surface.
Background
In modern industrial production, carbon monoxide is one of the important basic feedstocks for carbon chemistry, and it can be used in the production of a variety of organic chemicals, such as: the synthesis of organic chemicals such as raw materials of formic acid, oxalic acid, acetic anhydride, propionic acid, acrylic ester, carboxylic ester, dimethyl formamide, diisocyanate, polycarbonate and polyurethane. As the variety of hydroxyl-synthesizing organic chemicals continues to increase, the demand for carbon monoxide in the industry continues to increase.
There are many methods for producing carbon monoxide, for example, in the steel industry, coke oven gas (containing carbon monoxide) is produced on a large scale by using coke and is used for reducing metals, but the coke oven gas produced by the method has low carbon monoxide content, more side reactions and more impurity components. In the production of carbon monoxide by means of water gas, the purity is also low because carbon dioxide which cannot participate in the reaction inevitably exists in the produced product gas. The preparation of carbon monoxide by formic acid dehydration has the defects of unstable activity, poor selectivity, a certain amount of hydrogen which is difficult to separate in the generated carbon monoxide, easy carbon precipitation reaction of formic acid on the surface layer of a catalyst and the like. Therefore, it is necessary to find a method for preparing carbon monoxide, which is simple to operate.
Disclosure of Invention
According to one aspect of the present application, a method for producing carbon monoxide by partial oxidation of graphite surface is provided, which controls the production of carbon monoxide gas by partial oxidation of graphite surface.
The method for preparing carbon monoxide by partially oxidizing the surface of graphite is characterized by comprising the following steps of:
a) pretreating graphite;
b) adding the pretreated graphite into a reactor, introducing a mixed gas of an inactive gas and oxygen into the reactor, and reacting to obtain a product gas; wherein the inactive gas is selected from at least one of nitrogen, helium and argon;
c) and purifying the product gas to obtain carbon monoxide gas.
Optionally, step a) pre-treating the graphite to reduce the particle size of the graphite.
Optionally, in the step a), the particle size of the pretreated graphite is 80-140 meshes.
Optionally, in the step b), the pressure of the reaction is 0.01-4.0 Mpa; the reaction temperature is 700-1200 ℃.
Optionally, in step b), the upper limit of the pressure of the reaction is selected from 0.05MPa, 1MPa, 1.5MPa, 2MPa, 2.5MPa, 3MPa, 3.5MPa or 4 MPa; the lower limit is selected from 0.01MPa, 0.05MPa, 1MPa, 1.5MPa, 2MPa, 2.5MPa, 3MPa and 3.5 MPa.
Optionally, in step b), the upper limit of the temperature of the reaction is selected from 800 ℃, 900 ℃, 1000 ℃, 1100 ℃ or 1200 ℃; the lower limit is selected from 700 deg.C, 800 deg.C, 900 deg.C, 1000 deg.C or 1100 deg.C.
Optionally, in the step b), the volume ratio of the oxygen to the inert gas in the mixed gas of the inert gas and the oxygen is 1: 1-5.
Optionally, in step b), the upper limit of the volume ratio of the oxygen gas to the inert gas in the mixed gas of the inert gas and the oxygen gas is selected from 1:1, 1:2, 1:3, 1:4 and 1: 5.
Optionally, in the step b), the pretreated graphite is added into a reactor, and mixed gas of inactive gas and oxygen is introduced into the reactor, reacted and filtered to obtain product gas. Filtered to remove unreacted graphite.
Optionally, in the step c), after the product gas is purified, carbon monoxide gas with a purity of more than 90-99 vol% is obtained. The purification includes separating oxygen from the product gas.
Optionally, step c) further comprises, after the purification, detecting the product gas.
Optionally, in step a), the pretreatment manner is at least one selected from grinding, ball milling and sieving.
Optionally, in step b), the pretreated graphite is added to the reactor through a material injector.
Optionally, in step b), the reactor comprises a gas inlet part, a gas outlet part, a feed part and a reaction part;
the gas inlet part, the gas outlet part and the feeding part are arranged on the reaction part;
the feeding part is communicated with the material ejector, and the pretreated graphite is introduced into the reaction part;
the gas inlet part is used for introducing mixed gas of inactive gas and oxygen into the reaction part;
in the reaction part, the pretreated graphite reacts with the mixed gas of the inactive gas and the oxygen to obtain a product gas;
and the product gas is output through the gas outlet part.
Optionally, the gas inlet part is arranged at the lower end of the reaction part, and mixed gas of inactive gas and oxygen introduced into the gas inlet part is from bottom to top;
the feeding part is arranged at the upper end of the reaction part, and the pretreated graphite introduced into the feeding part is from top to bottom;
in the reaction part, the pretreated graphite and the mixed gas of the inert gas and the oxygen gas are subjected to a countercurrent reaction.
Optionally, the air inlet part and the air outlet part are provided with a filtering device, and the filtering device filters graphite particles.
Optionally, the air inlet of the air inlet portion and the air outlet of the air outlet portion have an anti-blocking function, and the end of the air pipeline is sealed with alumina cotton to prevent graphite particles from entering the ventilation pipeline.
Optionally, the reaction part is provided with a heating device, and the heating device heats the reaction part.
Optionally, the gas outlet part is connected with a gas purification device, and the gas purification device purifies the product gas to obtain carbon monoxide gas with a purity of more than 90-99 vol%. The gas purification device comprises a separation device for carbon monoxide and oxygen.
Optionally, the gas purification device is connected to a detection device, and the detection device detects the purity of CO in the purified product gas.
Optionally, the detection device is a gas chromatograph.
In one embodiment, the reactor is a reactor; the reaction furnace mainly comprises a material ejector, a heating part, an air inlet and an air outlet.
As an implementation mode, the method for preparing carbon monoxide by partially oxidizing the surface of graphite comprises the following steps of material pretreatment, a reaction furnace, gas purification, collection and detection:
(1) pretreating graphite, and grinding and crushing the graphite to 80-140 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with different oxygen concentrations;
(3) reacting under the conditions that the pressure is 0.01-4.0 MPa and the temperature is 700-1200 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The beneficial effects that this application can produce include:
the method for preparing carbon monoxide by partial oxidation of the graphite surface provided by the application has the following principle: 2C + O2→ 2 CO; the invention has the advantage that the concentration, the temperature and the pressure of the oxygen are controlled to avoid the excessive oxidation of the graphite to generate the carbon dioxide. Easy process, simple operation, environment-friendly process and the like.
Drawings
Fig. 1 is a flow chart of a graphite surface partial oxidation process of the present application.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
The raw materials in the examples of the present application were all purchased commercially, unless otherwise specified.
The analysis method in the examples of the present application is as follows:
gas chromatography was performed using Shimazu, Japan, GC-2014. The gas purification device in the embodiment is an existing separation device for carbon monoxide and oxygen.
The yield of carbon monoxide was calculated according to the following formula:
the process of the method for preparing carbon monoxide by partial oxidation of the graphite surface in the example is shown in figure 1: the pretreated graphite is added into the reactor through a material ejector.
The reactor comprises an air inlet part, an air outlet part, a feeding part and a reaction part;
the gas inlet part, the gas outlet part and the feeding part are arranged on the reaction part;
the feeding part is communicated with the material ejector, and the pretreated graphite is introduced into the reaction part;
the gas inlet part is used for introducing mixed gas of inactive gas and oxygen into the reaction part;
in the reaction part, the pretreated graphite reacts with the mixed gas of the inactive gas and the oxygen to obtain a product gas;
and the product gas is output through the gas outlet part.
The gas inlet part is arranged at the lower end of the reaction part, and mixed gas of inactive gas and oxygen introduced into the gas inlet part is from bottom to top;
the feeding part is arranged at the upper end of the reaction part, and the pretreated graphite introduced into the feeding part is from top to bottom;
in the reaction part, the pretreated graphite and the mixed gas of the inert gas and the oxygen gas are subjected to a countercurrent reaction.
The air inlet part and the air outlet part are provided with filtering devices, and the filtering devices filter graphite particles.
The air inlet of the air inlet part and the air outlet of the air outlet part have an anti-blocking function, and the end of the air pipeline is sealed by alumina cotton to prevent graphite particles from entering the ventilation pipeline.
The reaction part is provided with a heating device which heats the reaction part.
The gas outlet part is connected with a gas purification device, and the gas purification device purifies the product gas to obtain carbon monoxide gas with the purity of more than 90-99 vol%. The gas purification device comprises a separation device for carbon monoxide and oxygen.
The gas purification device is connected with a detection device, and the detection device detects the purity of CO in the purified product gas.
Example 1
(1) Pretreating graphite, grinding and crushing to 80 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with 20% volume fraction of oxygen;
(3) reacting under the conditions of 1.0MPa of pressure and 800 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The yield of carbon monoxide was calculated according to the following formula:
the yield of carbon monoxide obtained in this example was found to be 91.3% by calculation.
Example 2
(1) Pretreating graphite, and grinding and crushing the graphite to 100 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with 20% volume fraction of oxygen;
(3) reacting under the conditions of 1.5MPa of pressure and 800 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The yield of carbon monoxide obtained in this example was calculated and analyzed to be 93.5%.
Example 3
(1) Pretreating graphite, and grinding and crushing the graphite to 100 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with the volume fraction of 40% of oxygen;
(3) reacting under the conditions of 1.5MPa of pressure and 900 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The carbon monoxide yield obtained in this example was calculated to be 95.2%.
Example 4
(1) Pretreating graphite, and grinding and crushing the graphite to 120 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with the volume fraction of 40% of oxygen;
(3) reacting under the conditions of pressure of 2.0MPa and temperature of 900 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The yield of carbon monoxide obtained in this example was found to be 96.7% by calculation.
Example 5
(1) Pretreating graphite, and grinding and crushing the graphite to 120 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with 30% volume fraction of oxygen;
(3) reacting under the conditions of pressure of 3.0MPa and temperature of 1000 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The yield of carbon monoxide obtained in this example was found to be 97.4% by calculation.
Example 6
(1) Pretreating graphite, and grinding and crushing the graphite to 120 meshes;
(2) feeding the crushed graphite into a reaction furnace by using a material ejector, and blowing nitrogen with 17% volume fraction of oxygen;
(3) reacting under the conditions of pressure of 0.01MPa and temperature of 1200 ℃;
(4) gas exhausted from the reaction furnace enters a gas purification device for purification;
(5) the gas was collected by a gas bag and the concentration of each gas was measured by gas chromatography.
The yield of carbon monoxide obtained in this example was found to be 97.8% by calculation.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. A method for preparing carbon monoxide by partially oxidizing the surface of graphite is characterized by comprising the following steps:
a) pretreating graphite;
b) adding the pretreated graphite into a reactor, introducing a mixed gas of an inactive gas and oxygen into the reactor, and reacting to obtain a product gas; wherein the inactive gas is selected from at least one of nitrogen, helium and argon;
c) and purifying the product gas to obtain carbon monoxide gas.
2. The method for preparing carbon monoxide by partially oxidizing the surface of graphite according to claim 1, wherein the particle size of the pretreated graphite in the step a) is 80-140 meshes.
3. The method for preparing carbon monoxide through partial oxidation of the graphite surface according to claim 1, wherein in the step b), the reaction pressure is 0.01-4.0 MPa; the reaction temperature is 700-1200 ℃.
4. The method for preparing carbon monoxide through partial oxidation of the surface of graphite according to claim 1, wherein in the step b), the volume ratio of oxygen to the inert gas in the mixed gas of the inert gas and oxygen is 1: 1-5.
5. The method for preparing carbon monoxide through partial oxidation of the surface of graphite according to claim 1, wherein in the step c), the product gas is purified to obtain carbon monoxide gas with the purity of more than 90-99 vol%.
6. The method for preparing carbon monoxide through partial oxidation of the graphite surface according to claim 1, wherein in the step a), the pretreatment mode is at least one selected from grinding, ball milling and sieving.
7. The method for preparing carbon monoxide through partial oxidation of the surface of graphite according to claim 1, wherein in the step b), the pretreated graphite is added into the reactor through a material injector.
8. The method for preparing carbon monoxide through partial oxidation of the graphite surface according to claim 7, wherein in the step b), the reactor comprises a gas inlet part, a gas outlet part, a feeding part and a reaction part;
the gas inlet part, the gas outlet part and the feeding part are arranged on the reaction part;
the feeding part is communicated with the material ejector, and the pretreated graphite is introduced into the reaction part;
the gas inlet part is used for introducing mixed gas of inactive gas and oxygen into the reaction part;
in the reaction part, the pretreated graphite reacts with the mixed gas of the inactive gas and the oxygen to obtain a product gas;
and the product gas is output through the gas outlet part.
9. The method for preparing carbon monoxide through partial oxidation of the surface of graphite according to claim 8, wherein the gas inlet part is arranged at the lower end of the reaction part, and mixed gas of inactive gas and oxygen is introduced into the gas inlet part from bottom to top;
the feeding part is arranged at the upper end of the reaction part, and the pretreated graphite introduced into the feeding part is from top to bottom;
in the reaction part, the pretreated graphite and the mixed gas of the inert gas and the oxygen gas are subjected to a countercurrent reaction.
10. The method for preparing carbon monoxide through partial oxidation of the graphite surface according to claim 8, wherein the gas inlet part and the gas outlet part are provided with filtering devices, and the filtering devices filter graphite particles;
preferably, the reaction part is provided with a heating device which heats the reaction part;
preferably, the gas outlet part is connected with a gas purification device, and the gas purification device purifies the product gas to obtain carbon monoxide gas with the purity of more than 90-99 vol%;
preferably, the gas purification device is connected with a detection device, and the detection device detects the purity of CO in the purified product gas.
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| CN108529625A (en) * | 2018-06-13 | 2018-09-14 | 昆明理工大学 | A method of preparing carbon monoxide using coal |
| CN108855187A (en) * | 2018-07-02 | 2018-11-23 | 福州大学 | A kind of fluorine richness boron carbon nitrogen catalysis material and its application in efficiently reduction carbon dioxide |
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2020
- 2020-04-03 CN CN202010261220.5A patent/CN113493206A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN102732324A (en) * | 2012-07-02 | 2012-10-17 | 西北化工研究院 | Method for preparing carbon monoxide from carbon-containing raw material, and obtained product |
| CN102965131A (en) * | 2012-10-15 | 2013-03-13 | 金涌 | Efficient and clean utilization technology for highly volatile young coal |
| CN107937029A (en) * | 2017-12-22 | 2018-04-20 | 中国科学院上海高等研究院 | A kind of method and system of coal base calcium carbide acetylene |
| CN108529625A (en) * | 2018-06-13 | 2018-09-14 | 昆明理工大学 | A method of preparing carbon monoxide using coal |
| CN108855187A (en) * | 2018-07-02 | 2018-11-23 | 福州大学 | A kind of fluorine richness boron carbon nitrogen catalysis material and its application in efficiently reduction carbon dioxide |
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Application publication date: 20211012 |