CN109298015B - Experimental device for coal rapid heating gasification combustion under high pressure environment - Google Patents
Experimental device for coal rapid heating gasification combustion under high pressure environment Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 78
- 238000002309 gasification Methods 0.000 title claims abstract description 46
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 35
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 74
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- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical group C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
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- 230000003647 oxidation Effects 0.000 abstract description 3
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- 230000000694 effects Effects 0.000 description 10
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
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- 238000010248 power generation Methods 0.000 description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses CO2An experimental device for coal rapid heating, gasification and combustion in enriched high-pressure environment comprises injecting enriched CO2And O2High pressure reactor for mixed gas, CO2Laser beam heating device, laser filter, flue gas filter, air pump, gas pitcher and detecting instrument, high pressure batch autoclave bottom center is equipped with ceramic disc, and the coal sample is placed on ceramic disc, and ceramic disc top sets up a cylindrical uncovered container, and high pressure batch autoclave top is equipped with CO2The lower part of the laser beam heating device is provided with a laser filter, and laser enters the high-pressure reaction kettle after being filtered. The device can quickly heat the coal sample in a short time, so that the temperature of the coal sample is quickly raised to the target temperature, the temperature rise time is shortened, the slow oxidation combustion of the coal is avoided, and the gasification efficiency of the coal is improved. Meanwhile, the experimental device can be used for carrying out experiments under normal pressure or high pressure so as to research the gasification efficiency of coal under different conditions.
Description
Technical Field
The invention relates to CO2An experimental device for coal rapid heating, gasification and combustion in an enriched high-pressure environment belongs to the technical field of coal gasification combined cycle power generation.
Background
According to international energy data statistics, China has abundant coal resources, coal-coalable coal reserves are in the third position of the world, and China accounts for about 19% of the world in carbon dioxide emission, wherein the carbon dioxide emission generated by coal thermal power generation accounts for about 30% of the total emission of China. The international energy agency proposes that continued utilization of coal as a long-term fuel should employ clean coal under effective carbon managementA clean and efficient way. With respect to power generation technologies that are receiving much attention, improving energy efficiency is one of the leverage of carbon dioxide emission reduction. The current technologically advanced technology of coal-fired power generation faces two technical challenges: higher thermal efficiency and carbon capture technology. Recently, oxy-fuel combustion technology has made a significant breakthrough in the capture of carbon dioxide and the development of low emissions. Coal gasification combined cycle (IGCC) power generation technology combined with carbon capture and sequestration is considered one of the most desirable options for future thermal power plants. Coal gasification is an established technology, and the gasification of coal combined with oxygen is an exothermic reaction and produces carbon monoxide (CO), hydrogen (H)2) Combustible gas composed of Hydrocarbons (HCs) and carbon dioxide (CO)2). Further, high temperature and high pressure gas generated by combustion of fuel gas with compressed air or oxygen in a combustion furnace is combined with gas steam turbine to generate power to obtain higher thermal efficiency than current coal-fired power plants. Generally, the high temperature gasification of coal is a very complex process, and the chemical reaction of gasification is influenced by factors such as coal rank, highest temperature of gasification, heating rate, reaction time, gas environment, and gas pressure.
Generally, the pyrolysis time of coal is largely dependent on the rate of temperature rise, in other words, the pyrolysis time of coal decreases as the rate of temperature rise increases. And the gasification reaction intensity of coal and char is in CO2/O2Or air increases in the gaseous environment with increasing rate of temperature rise. CO was investigated by the previous group using a thermal gravimetric differential thermal analyzer2Concentration and enhanced O2The effect of specific gravity on coal gasification and combustion reactivity and gaseous products. The experimental result shows that when the temperature rise rate exceeds 40 ℃ per minute-1At this time, coal conversion is mainly accomplished in the form of coal gasification rather than coal combustion. However, thermogravimetric-differential thermal analyzers are limited by the rate of temperature rise of coal heating (max: 50 ℃ C. min.)-1) At DEG C min-1Rather than at DEG C.s-1And (4) heating. Thus, the thermogravimetric-differential thermal analyzer generally takes tens of minutes or longer to reach the gasification temperature range of 1200-1500 ℃ of the gasification furnace with industrially strong heat radiation. Therefore, before reaching the vaporization temperatureThe long ramp times tend to promote slow oxidative combustion of the coal because of the low ramp rates.
The pyrolysis, combustion and gasification properties of coal have been extensively studied and studied over the past several decades with increasing pressure. The gasification reaction activity of the coal is enhanced along with the pressure rise of the system, generally, the pressure of the IGCC coal gasification technology in industry is 1.5-2.5 MPa, the high-pressure gasification of the coal not only can effectively improve the gasification reaction intensity and the thermal efficiency, but also greatly reduces CO2And (4) discharging. Generally, there are three situations in which pressure acts: the partial pressure of a certain reactant gas is fixed, the mole fraction of a certain reactant gas is fixed, and the partial pressure of a certain reactant gas is changed under the condition of fixed total pressure. Researchers studied the activity of pressure on carbon reaction by using a thermogravimetric-differential thermal analyzer pressurized to 5MPa, but the temperature rise rate of the thermal analyzer is only 10 ℃ per minute-1. Investigators were in simulated air (O)2/N2, O23-21%) and oxy-fuel (O2/CO)2, O25-30%) under normal pressure, respectively adopting a bundle tube combustion furnace at 1400 ℃ and a thermogravimetry-differential thermal analyzer at 1200 ℃ to research the coal combustion and gasification reaction activity. Even if O2Is controlled to be very low, but the Carbon/Oxygen molecular ratio still enables the oxidative combustion of coal to be accomplished under slow heating conditions. Therefore, knowing the pressure activity for coal gasification and combustion and CO, H2And CH4And the influence of the product of the synthesis gas is very important for the development of IGCC technology in the future.
Previously, many researchers analyzed the effect of pressure and temperature ramp rate on the reactivity of coal chemistry at high or low ramp rates and at atmospheric or high pressure, but most of the previous experiments rarely used the system conditions of high pressure and high ramp rate at the same time, since laboratory equipment is difficult to achieve industrially desirable conditions at the same time. Moreover, the relationship between the activity of the coal gasification reaction and the generation of the synthesis gas is rarely analyzed and studied experimentally on the basis of the basic properties of the IGCC. In addition, O under atmospheric pressure has been published by a large number of researchers2/N2And O2/CO2Chemical characteristics and comparison results of coal in different gas environments. At atmospheric pressureThe combustion temperature of coal is 21% O due to gas environment2/79%CO2Substituted for air (21% O)2/79%N2) And decreases. In general, to match the temperature profile of the coal-air combustion, O2/CO2O in the mixed gas2The concentration must be 30% or higher. However, even in the same O2CO at concentration (5%, 10%, 21-35%)2Substituted N2Resulting in a reduction in coal conversion but an increase in the production of syngas such as CO and HCs. In other words, compared to O2/N2Gas environment, O2/CO2The gas environment increases the syngas production per mass of coal.
In addition, researchers have explored the effects of the following three pressures: (1) based on atmospheric air, O2The molecules are constant; (2) Air/CO2The molecular ratio is constant under a constant total gas pressure, i.e. PO2P = 3.3%; (3) by varying Air and CO2Partial pressure is maintained constant for total pressure, i.e. P = Pair+PCO2Is constant. In particular, the pressure activity on gasification and combustion reactions of coal, char and char-water mixtures has also been investigated; CO and H in the rapid heating process2And CH4The yield of the synthesis gas is equal; injected CO2The ratio of the participation in the reaction during gasification and combustion; the conversion rate of the coal and the carbon after the rapid heating is finished.
Therefore, based on the development of IGCC technology, O is adopted in the high-pressure system2/CO2Substituted O2/N2The feasibility analysis of (A) is very necessary. In view of this, analytical investigation and comparison of CO is required2And N2Coal gasification and combustion reaction activity and generation of synthesis gas under the conditions of high temperature and high pressure of different gas environments; and discussing the CO injected into the gasification furnace to participate in coal gasification2CO produced by conversion with coal2Ratio to further confirm CO in the mixed fuel gas2And O2The importance of the method in the high-temperature and high-pressure coal gasification and combustion process is provided so as to provide reliable data basis for the development of future IGCC technology.
Disclosure of Invention
The invention aims to provide CO2The experimental device for coal rapid heating gasification combustion in the enrichment high-pressure environment can rapidly heat a coal sample in 10s or even shorter time, so that the coal sample can reach a target temperature in shorter time, thereby avoiding the slow oxidation combustion of the coal and improving the gasification efficiency of the coal.
The invention provides CO2An experimental device for coal rapid heating, gasification and combustion in enriched high-pressure environment comprises injecting enriched CO2And O2High pressure reactor for mixed gas, CO2Laser beam heating device, laser filter, flue gas filter, air pump, gas pitcher and detecting instrument, detecting instrument includes manometer, O2A monitor, a CO analyzer, a syngas detector;
the gas tank is connected with an air inlet pipeline in the experimental device through a pressure valve and a three-way connector, a first pneumatic valve and a pressure gauge are arranged on the air inlet pipeline, and then CO enrichment is injected in the connection mode2And O2The indication number displayed by a pressure gauge on an air inlet pipeline of the high-pressure reaction kettle for mixed gas is that enriched CO is injected2And O2The pressure in the high-pressure reaction kettle of the mixed gas;
a ceramic disc is arranged at the center of the bottom of the high-pressure reaction kettle, a coal sample is placed on the ceramic disc, a cylindrical open container is arranged above the ceramic disc, and CO is arranged above the high-pressure reaction kettle2The laser beam heating device is provided with a laser filter at the lower part, and the laser enters the high-pressure reaction kettle after being filtered;
CO enrichment by injection2And O2The high-pressure reaction kettle of the mixed gas is connected with the gas outlet pipeline through a second gas pressure valve; the second air pressure valve is connected with the flue gas filter;
an air collecting bag is arranged between the second air pressure valve and the flue gas filter, a third air pressure valve and a fourth air pressure valve are respectively arranged on two sides of the air collecting bag, and the air collecting bag is used for collecting and sampling reaction gas under high pressure; the flue gas filter is sequentially connected with O2A monitor, a CO analyzer, a syngas detector; an air pump is arranged between the CO analyzer and the synthesis gas detectorThe pump makes the gas in the whole experimental apparatus circulate continuously.
In the above plant, enriched CO is injected2And O2The radiation heat conduction in the high-pressure reaction kettle of the mixed gas is completed by a black body containing isothermal gas, and the radiation heat flow is 5.7 multiplied by 10 according to the Stefan-Boltzmann law5～11.9×105W·m-2。
In the above apparatus, CO enriched is injected2And O2The high-pressure reaction kettle for the mixed gas is a fixed cylindrical reaction kettle, the height of the reaction kettle is 83mm, and the inner diameter of the reaction kettle is 48 mm.
In the above apparatus, CO enriched is injected2And O2The upper part of the high-pressure reaction kettle of the mixed gas is provided with a laser filter, and the adopted filter is a zinc selenide sheet with the diameter of 6mm, so that CO is conveniently filtered2The laser beam passes through. The laser filter is placed in a reaction kettle.
The second air pressure valve is connected with the flue gas filter through an air outlet pipeline, and is used for filtering the reacted gas to remove impurities.
In the above device, the flue gas filter and the O2The monitor is connected to monitor the oxygen concentration in the syngas. Said O is2The monitor is connected with a CO analyzer, and the CO analyzer analyzes CO gas in the synthesis gas. The CO analyzer is connected with a synthesis gas detector, and the synthesis gas detector is used for measuring CH4The concentration of (c).
In the above device, when the gas flow in the whole experimental device is stable, the pressure valve is closed, and the injection of enriched CO is stopped2And O2The mixed gas of (1).
In the above device, the glass plate is a zinc selenide glass plate; the laser filter is a zinc selenide lens with the diameter of 6mm, and CO is enriched by injecting2And O2The bottom of the high-pressure reaction kettle of the mixed gas is provided with a ceramic disc, the outer side of the high-pressure reaction kettle is provided with a reaction kettle cylinder sleeve, and the upper bottom and the lower bottom of the high-pressure reaction kettle are provided with metal fixing pieces.
In the device, when the experimental conditions are different under high pressure and normal pressure, the opening and closing conditions of the air pressure valves are not the sameMeanwhile, the gas collecting bag is required to be used for collecting the reacted gas under the high pressure condition, and the gas collecting bag is not required to be used under the normal pressure condition; furthermore, the gas analyzer under high pressure, which is a gas chromatograph, is different from the gas analyzer under normal pressure, in which the reaction gas under normal pressure is first filtered through a flue gas filter and then passed through an O filter2Monitor for monitoring O2The change in concentration. Then, the CO gas is analyzed by a CO analyzer. Then the reaction gas enters a synthesis gas detector to detect CH under the action of an air pump4Generation of and change in concentration.
The invention has the beneficial effects that:
the device can quickly heat the coal sample in a short time, quickly raise the temperature of the coal sample to the target temperature, shorten the temperature rise time, avoid the slow oxidation combustion of the coal and improve the gasification efficiency of the coal. Meanwhile, the experimental device can be used for carrying out experiments under normal pressure and creating a high-pressure experimental environment so as to research the coal gasification efficiency under different conditions.
Drawings
FIG. 1 shows a CO according to the invention2The structural schematic diagram of the experimental device for coal rapid heating gasification combustion in the enrichment high-pressure environment.
FIG. 2 shows CO enrichment by CO injection in the present invention2And O2Schematic representation of a mixed gas autoclave.
Wherein: 1-gas tank; 2-pressure valve; 3-three-way interface; 4-a first pneumatic valve; 5-pressure gauge; 6-coal sample; 7-CO2A laser beam heating device; 8-laser filter; 9-injection of enriched CO2And O2A high-pressure reaction kettle for mixed gas; 10-second pneumatic valve; 11-third pneumatic valve; 12-fourth pneumatic valve; 13-cylindrical open vessel; 14-ceramic disk; 15-air collecting bag; 16-flue gas filter; 17-O2A monitor; 18-CO analyzer; 19-air pump; 20-syngas detector; 21-glass plate; 22-metal fixture; 23-reaction kettle cylinder liner.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
Example 1:
as shown in FIG. 1, a CO2An experimental device for coal rapid heating, gasification and combustion in enriched high-pressure environment comprises injecting enriched CO2And O2High-pressure reaction kettle 9 for mixed gas and CO2The device comprises a laser beam heating device 7, a laser filter 8, a flue gas filter 16, an air pump 19, a gas tank 1 and a detection instrument, wherein the detection instrument comprises a pressure gauge 5 and an O2A monitor 17, a CO analyzer 18, a syngas detector 20;
the gas tank 1 is connected with a gas inlet pipeline in the experimental device through a pressure valve 2 and a three-way connector 3, a first gas pressure valve 4 and a pressure gauge 5 are arranged on the gas inlet pipeline, and then the gas tank is connected and injected with enriched CO2And O2The indication number displayed by a pressure gauge 5 on an air inlet pipeline of a high-pressure reaction kettle 9 for mixed gas is that enriched CO is injected2And O2The pressure in the high-pressure reaction vessel 9 of the mixed gas;
a ceramic disc 14 is arranged at the center of the bottom of the high-pressure reaction kettle, the coal sample 6 is placed on the ceramic disc 14, a cylindrical open container 13 is arranged above the ceramic disc 14, and CO is arranged above the high-pressure reaction kettle2A laser beam heating device 7, wherein the lower part of the device is provided with a laser filter 8, and laser enters the high-pressure reaction kettle after being filtered;
CO enrichment by injection2And O2The high-pressure reaction kettle 9 of the mixed gas is connected with a gas outlet pipeline through a second gas pressure valve 10; the second air pressure valve 10 is connected with a flue gas filter 16;
an air collecting bag 15 is arranged between the second air pressure valve 10 and the flue gas filter 16, a third air pressure valve 11 and a fourth air pressure valve 12 are respectively arranged on two sides of the air collecting bag 15, and the air collecting bag 15 is used for collecting and sampling reaction gas under high pressure; the flue gas filter 16 is connected with O in sequence2A monitor 17, a CO analyzer 18, a syngas detector 20; an air pump 19 is arranged between the CO analyzer 18 and the synthetic gas detector 20, and the air pump 19 enables the gas in the whole experimental device to be continuously circulatedThe ring is utilized.
In the above plant, enriched CO is injected2And O2The radiation heat conduction in the high-pressure reaction kettle 9 of the mixed gas is completed by a black body containing isothermal gas, and the radiation heat flow is 5.7 multiplied by 10 according to the Stefan-Boltzmann law5～11.9×105W·m-2。
In the above apparatus, CO enriched is injected2And O2The high-pressure reaction kettle 9 of the mixed gas is a fixed cylindrical reaction kettle, the height is 83mm, and the inner diameter is 48 mm.
In the above apparatus, CO enriched is injected2And O2The upper part of a high-pressure reaction kettle 9 of the mixed gas is provided with a laser filter 8, and the adopted filter plate is a zinc selenide plate with the diameter of 6mm so as to facilitate CO2The laser beam passes through. The laser filter 8 is placed in a reaction vessel.
The second air pressure valve 10 is connected with a flue gas filter 16 through an air outlet pipeline, and is used for filtering the reacted gas to remove impurities.
In the above device, the flue gas filter 16 and the O2Monitor 17 is connected to monitor the oxygen concentration in the syngas. Said O is2The monitor 17 is connected to a CO analyzer 18, and the CO analyzer 18 analyzes CO gas in the synthesis gas. The CO analyzer 18 is connected to a syngas detector 20, the syngas detector 20 being configured to measure CH4The concentration of (c).
In the above device, when the gas flow in the whole experimental device is stable, the pressure valve is closed, and the injection of enriched CO is stopped2And O2The mixed gas of (1).
As shown in fig. 2, the glass plate 21 is a zinc selenide glass plate; the laser filter 8 is a zinc selenide lens with the diameter of 6mm, and CO is injected and enriched2And O2The bottom of the high-pressure reaction kettle 9 of the mixed gas is provided with a ceramic disc 14, the outer side is provided with a reaction kettle cylinder sleeve 23, and the upper bottom and the lower bottom are provided with metal fasteners 22.
In the device, when the experimental conditions are under two different conditions of high pressure and normal pressure, the opening and closing conditions of each air pressure valve are different, and the high pressure condition is generatedUnder the condition, the gas collecting bag is required to be used for collecting the gas after reaction, and the gas collecting bag is not required to be used under the normal pressure condition; furthermore, the gas analyzer under high pressure, which is a gas chromatograph, is different from the gas analyzer under normal pressure, in which the reaction gas under normal pressure is first filtered through a flue gas filter and then passed through an O filter2Monitor for monitoring O2The change in concentration. Then, the CO gas is analyzed by a CO analyzer. Then the reaction gas enters a synthesis gas detector to detect CH under the action of an air pump4Generation of and change in concentration.
The experimental device provided by the invention comprises the following specific operation steps:
(1) the coal sample 6 required for the experiment was prepared and prepared for the experiment.
(2) According to the experimental requirement, a pressure value is preset, and the flow of the introduced gas is controlled by the pressure.
(3) And (4) putting the experimental coal sample 6, opening a valve of the gas tank 1, and starting to ventilate.
(4) By using CO2The laser beam heating device 7 rapidly heats the coal sample 6 to raise the coal sample to a target temperature in a short time, and after the target temperature is reached, the coal sample 6 starts to be gasified and combusted to generate a reaction gas.
(5) When the experimental conditions are high pressure conditions, the second gas pressure valve 10 should be closed first before the gas is introduced to create a high pressure environment inside the reaction vessel. After the experiment is finished, the fourth air pressure valve 12 is closed, the second air pressure valve 10 and the third air pressure valve 11 are opened, and the reacted gas enters the gas collecting bag 15 so as to carry out sampling analysis on the gas. In the case of high pressures, the analytical instrument used is a gas chromatograph.
(6) When the experimental condition is the normal pressure condition, the third pneumatic valve 11 and the fourth pneumatic valve 12 should be closed before the gas is introduced, so as to keep the first pneumatic valve 4 and the second pneumatic valve 10 in the open state all the time, and at this time, the gas collecting bag 15 is idle. After the experiment is completed, the reaction gas is first filtered through the flue gas filter 16 and then through the O2Monitor 17 to monitor O2The change in concentration. Then through a CO analyzer 18And performing CO gas analysis. Then the reaction gas enters a synthesis gas detector 20 under the action of an air pump 19 to mainly detect CH4Generation of and change in concentration.
(7) And analyzing related experimental data to draw a conclusion.
Although the present invention has been described with reference to particular embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. CO (carbon monoxide)2Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: involving injection of enriched CO2And O2High pressure reactor for mixed gas, CO2Laser beam heating device, laser filter, flue gas filter, air pump, gas pitcher and detecting instrument, detecting instrument includes manometer, O2A monitor, a CO analyzer, a syngas detector;
the gas tank is connected with an air inlet pipeline in the experimental device through a pressure valve and a three-way connector, a first pneumatic valve and a pressure gauge are arranged on the air inlet pipeline, and then CO enrichment is injected in the connection mode2And O2The indication number displayed by a pressure gauge on an air inlet pipeline of the high-pressure reaction kettle for mixed gas is that enriched CO is injected2And O2The pressure in the high-pressure reaction kettle of the mixed gas;
a ceramic disc is arranged at the center of the bottom of the high-pressure reaction kettle, a coal sample is placed on the ceramic disc, a cylindrical open container is arranged above the ceramic disc, and CO is arranged above the high-pressure reaction kettle2The laser beam heating device is provided with a laser filter at the lower part, and the laser enters the high-pressure reaction kettle after being filtered;
CO enrichment by injection2And O2The high-pressure reaction kettle of the mixed gas is connected with the gas outlet pipeline through a second gas pressure valve; first, theThe second air pressure valve is connected with the flue gas filter;
an air collecting bag is arranged between the second air pressure valve and the flue gas filter, a third air pressure valve and a fourth air pressure valve are respectively arranged on two sides of the air collecting bag, and the air collecting bag is used for collecting and sampling reaction gas under high pressure; the flue gas filter is sequentially connected with O2A monitor, a CO analyzer, a syngas detector; an air pump is arranged between the CO analyzer and the synthesis gas detector, and the air pump enables the gas in the whole experimental device to be continuously recycled.
2. CO according to claim 12Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: enriching CO during injection2And O2The radiation heat conduction in the high-pressure reaction kettle of the mixed gas is completed by a black body containing isothermal gas, and the radiation heat flow is 5.7 multiplied by 10 according to the Stefan-Boltzmann law5～11.9×105W·m-2。
3. CO according to claim 12Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: CO enrichment by injection2And O2The high-pressure reaction kettle for the mixed gas is a fixed cylindrical reaction kettle, the height of the reaction kettle is 83mm, and the inner diameter of the reaction kettle is 48 mm.
4. CO according to claim 12Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: CO enrichment by injection2And O2The upper part of the high-pressure reaction kettle of the mixed gas is provided with a laser filter, and the adopted filter is a zinc selenide sheet with the diameter of 6mm, so that CO is conveniently filtered2The laser beam passes through.
5. CO according to claim 12Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: the flue gas filter and O2The monitor is connected to monitor the synthesis gasThe oxygen concentration of (d); said O is2The monitor is connected with a CO analyzer, and the CO analyzer analyzes CO gas in the synthesis gas; the CO analyzer is connected with a synthesis gas detector, and the synthesis gas detector is used for measuring CH4The concentration of (c).
6. CO according to claim 12Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: when the gas flow in the whole experimental device is stable, the pressure valve is closed, and the injection of enriched CO is stopped2And O2The mixed gas of (1).
7. CO according to claim 12Experimental apparatus for coal rapid heating gasification combustion under enrichment high pressure environment, its characterized in that: the laser filter is a zinc selenide lens with the diameter of 6mm, and CO is enriched by injecting2And O2The bottom of the high-pressure reaction kettle of the mixed gas is provided with a ceramic disc, the outer side of the high-pressure reaction kettle is provided with a reaction kettle cylinder sleeve, and the upper bottom and the lower bottom of the high-pressure reaction kettle are provided with metal fixing pieces.
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