Method and device for measuring hydrogen-carbon atomic ratio of combustible organic matter in oil shale in laboratory

Abstract

The present invention relates to a method for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale in a laboratory, comprising: S1, distilling out the oil kerogen and water in the oil shale sample by dry distillation to form a mixed gas, driving the mixed gas into a first drying device with an inert gas to remove water vapor; S2, burning the mixed gas with oxygen to form a mixed gas whose main components are carbon dioxide, water vapor, nitrogen dioxide and sulfur dioxide; S3, allowing the mixed gas to enter a second drying device to remove water vapor, and the remaining gas to enter a selective nitrogen dioxide and sulfur dioxide absorption device, and the remaining carbon dioxide to enter a carbon dioxide absorption device to be absorbed; S4, calculating the H molar amount n1 and the C molar amount n2 according to the weight difference of the first drying device and the weight difference of the carbon dioxide absorption device; thereby calculating the H / C ratio of the oil shale sample. The present invention can measure the hydrogen-carbon atomic ratio of combustible organic matter per unit mass in oil shale and the water content of oil shale by using common reagents and simple methods, and exclude the interference of nitrogen and sulfur contained in the oil shale.

Description

Technical Field

[0001] The invention relates to the technical field of oil shale component detection, and in particular to a method and a device for laboratory testing the hydrogen-carbon atomic ratio of combustible organic matter in oil shale. Background Art

[0002] Oil shale (also known as kerogen shale) is a high-ash sedimentary rock containing combustible organic matter. The main difference between it and coal is that the ash content exceeds 40%, and the main difference between it and carbonaceous shale is that the oil content is greater than 3.5%. Oil shale is an unconventional oil and gas resource, and is listed as a very important successor energy source in the 21st century due to its rich resources and feasibility of development and utilization. Like petroleum, natural gas and coal, it is a non-renewable fossil energy source. The composition of oil shale mainly includes kerogen, water and minerals. (1) Kerogen. The content is about 10%-50% (dry basis). It is a complex high-molecular organic compound rich in aliphatic hydrocarbon structure and less aromatic hydrocarbon structure. The elemental composition of kerogen is mainly carbon, hydrogen, and a small amount of oxygen, nitrogen and sulfur; its hydrogen-carbon atomic ratio is 1.25-1.75. The higher the kerogen content and the larger the hydrogen-carbon atomic ratio, the higher the oil yield of oil shale. (2) Water. It ranges from 4% to 25%, which is related to the microporous structure between mineral particles. Maoming oil shale has a high moisture content, consumes a lot of heat during thermal processing, and is easy to break when drying. (3) Minerals. They mainly include quartz, kaolin, clay, mica, carbonate rock, and pyrite. The content is usually higher than that of organic matter. Existing technologies focus more on measuring the kerogen content in oil shale, but there is no method to measure the hydrogen-carbon atomic ratio, which can roughly determine the oil production rate of oil shale. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a method and device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale in the laboratory, which can measure the hydrogen-carbon atomic ratio of combustible organic matter in unit mass of oil shale by using common reagents and simple methods, and can also measure the water content of unit mass of oil shale.

[0005] (II) Technical solution

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] In a first aspect, the present invention provides a method for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale in a laboratory, comprising:

[0008] S1. Using a dry distillation method to distill the kerogen and water in the oil shale sample to form a mixed gas, and using an inert gas to drive the mixed gas into a first drying device to remove water vapor;

[0009] S2, subjecting the dried mixed gas to oxygen combustion to form a mixed gas whose main components are carbon dioxide, water vapor, nitrogen dioxide and sulfur dioxide;

[0010] S3, the mixed gas obtained in S2 enters the second drying device to remove water vapor, the remaining gas enters the selective nitrogen dioxide and sulfur dioxide absorption device, and the remaining dry carbon dioxide enters the carbon dioxide absorption device to be absorbed;

[0011] S4. Calculate the molar amount n1 of H based on the weight difference of the drying device in S3; calculate the molar amount n2 of C based on the weight difference of the carbon dioxide absorption device in S3; and thereby calculate the H / C ratio in the oil shale sample.

[0012] According to a preferred embodiment of the present invention, in S1, the first drying device is a first drying tube, and phosphorus pentoxide is laid in the first drying tube; the first drying tube is detachably connected to the outlet pipe of the distillation device, and a cooling device is provided outside the outlet pipe and the first drying tube, and the temperature of the cooling medium in the cooling device is 70-80°C.

[0013] According to a preferred embodiment of the present invention, in S2, a combustion furnace is used for aerobic combustion, and the combustion furnace is connected to the first drying tube through an oxygen mixing pipe; one side of the oxygen mixing pipe is connected to an oxygen supply pipe, and the oxygen supply pipe is connected to oxygen diluted with argon; the oxygen diluted with argon is diluted according to a volume ratio of argon to oxygen of 1-2:1; the combustion furnace includes a flamethrower, and the flamethrower includes a plurality of discrete electronic ignition points to control the distribution area of ​​the flame, avoid excessively concentrated combustion, generate a large amount of local accumulation of heat, gas expansion, incomplete combustion of part of the gas, inaccurate detection and other problems.

[0014] According to a preferred embodiment of the present invention, in S3, the second drying device is a second drying tube, and phosphorus pentoxide is laid in the second drying tube; the second drying tube is connected to the combustion furnace through a pipeline, and a cooler is provided outside the second drying tube, and the temperature of the cooling medium in the cooler is 0-10°C.

[0015] According to a preferred embodiment of the present invention, in S3, the second drying tube is a separately detachable structure.

[0016] According to a preferred embodiment of the present invention, in S3, the selective nitrogen dioxide and sulfur dioxide absorption device is filled with concentrated sulfuric acid containing 1-5wt% water, and the concentrated sulfuric acid is placed in a reagent bottle, the air inlet pipe of the reagent bottle is inserted below the concentrated sulfuric acid liquid level, and the starting end of the air outlet pipe is located above the concentrated sulfuric acid liquid level; sulfur dioxide and nitrogen dioxide in the mixed gas are absorbed by the cleaning effect of concentrated sulfuric acid; the reagent bottle is placed in a cooling medium to maintain the temperature of the aqueous concentrated sulfuric acid not exceeding 10°C.

[0017] According to a preferred embodiment of the present invention, in S3, the carbon dioxide absorption device is filled with calcium hydroxide or sodium hydroxide solution, the calcium hydroxide or sodium hydroxide solution is placed in a reagent bottle, the air inlet pipe of the reagent bottle is inserted below the liquid level of the calcium hydroxide or sodium hydroxide solution, and the starting end of the air outlet pipe is located above the liquid level of the calcium hydroxide or sodium hydroxide solution; a water-absorbing and breathable plug is provided between the liquid level of the calcium hydroxide or sodium hydroxide solution and the starting end of the air outlet pipe.

[0018] According to a preferred embodiment of the present invention, in S3, the first and second drying tubes include a tube body and phosphorus pentoxide dry powder attached to the inside of the tube body; the length of the first drying tube is 2-3 times the length of the second drying tube.

[0019] In a second aspect, the present invention provides a laboratory device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale, which comprises a dry distillation device, a first drying device, a combustion furnace, a second drying device, a selective nitrogen dioxide and sulfur dioxide absorption device, and a carbon dioxide absorption device connected in sequence;

[0020] The dry distillation device comprises a cavity, one side of the cavity is an outlet pipe, and the other side is an inlet pipe; the inlet pipe is introduced with argon gas at a rate of 0.01-0.05 times the volume of the cavity / min to drive the water vapor and kerogen generated in the dry distillation device to be discharged into the outlet pipe, and sequentially pass through a first drying device, a combustion furnace, a second drying device, a selective nitrogen dioxide and sulfur dioxide absorption device, and a carbon dioxide absorption device;

[0021] The combustion furnace is connected to the first drying device through an oxygen mixing pipe, one side of the oxygen mixing pipe is connected to an oxygen supply pipe, and the oxygen supply pipe is connected to oxygen diluted by argon gas; the combustion furnace includes a flamethrower, and the flamethrower includes a plurality of discrete electronic ignition points;

[0022] The first drying device, the second drying device and the carbon dioxide absorption device are independently detachable structures.

[0023] According to a preferred embodiment of the present invention, the dry distillation device is an aluminum retort; the first drying device is a first drying tube, and phosphorus pentoxide is paved in the first drying tube; the first drying tube is detachably connected to the outlet pipe of the dry distillation device, and a cooling device is provided outside the outlet pipe and the first drying tube, and the temperature of the cooling medium in the cooling device is 70-80°C; the second drying device is a second drying tube, and phosphorus pentoxide is paved in the second drying tube; the second drying tube is connected to the combustion furnace through a pipeline, and a cooler is provided outside the second drying tube, and the temperature of the cooling medium in the cooler is 0-10°C.

[0024] According to a preferred embodiment of the present invention, the selective nitrogen dioxide and sulfur dioxide absorption device is filled with concentrated sulfuric acid containing 1-5wt% water, and the concentrated sulfuric acid is placed in a reagent bottle, the air inlet pipe of the reagent bottle is inserted below the concentrated sulfuric acid liquid level, and the starting end of the air outlet pipe is located above the concentrated sulfuric acid liquid level; sulfur dioxide and nitrogen dioxide in the mixed gas are absorbed by the aqueous concentrated sulfuric acid; the reagent bottle is placed in a cooling medium to maintain the temperature of the aqueous concentrated sulfuric acid not exceeding 10°C.

[0025] According to a preferred embodiment of the present invention, the carbon dioxide absorption device is filled with calcium hydroxide or sodium hydroxide solution, the calcium hydroxide or sodium hydroxide solution is placed in a reagent bottle, the air inlet pipe of the reagent bottle is inserted below the liquid level of the calcium hydroxide or sodium hydroxide solution, the starting end of the air outlet pipe is located above the liquid level of the calcium hydroxide or sodium hydroxide solution, and a water-absorbing and breathable plug is provided between the liquid level of the calcium hydroxide or sodium hydroxide solution and the starting end of the air outlet pipe.

[0026] According to a preferred embodiment of the present invention, the water-absorbent breathable plug is filter paper or a water-absorbent sponge.

[0027] (III) Beneficial effects

[0028] The method and device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale in the laboratory of the present invention can not only measure the water content in the oil shale, but also measure the hydrogen-carbon atomic ratio of combustible organic matter in the oil shale, and estimate the calorific value of the oil shale kerogen. The method of the present invention can process oil shale containing more impurities such as nitrogen and sulfur, and can eliminate the influence of nitrogen and sulfur content on the determination of the hydrogen-carbon ratio of the kerogen in the oil shale.

[0029] The method and device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale in the laboratory of the present invention have a simple composition structure, are easy to build in the laboratory, are easy to operate, and are convenient for calculation. They can also be used to accurately measure the hydrogen-carbon ratio of kerogen in oil shale containing more impurities such as nitrogen and sulfur. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the laboratory device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale.

[0031] Figure 2 The schematic diagram of the structure of the combustion furnace in the device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale in the laboratory of the present invention. DETAILED DESCRIPTION

[0032] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0033] like Figure 1As shown, it is a schematic diagram of the laboratory device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale of the present invention, in which a first drying device 2, a combustion furnace 3, a second drying device 4, a selective nitrogen dioxide and sulfur dioxide absorption device 5, a carbon dioxide absorption device 6, etc. are connected in sequence by pipelines behind a distillation device 1.

[0034] Among them, the distillation device 1 includes a cavity 10, and the cavity 10 contains an oil shale sample. One side of the cavity 10 is an outlet pipe 11, and the other side is an inlet pipe 12. The inlet pipe 12 is connected to an argon gas source. The outlet pipe 11 is connected to the first drying device 2. The first drying device 2 is a first drying tube, and phosphorus pentoxide is laid in the first drying tube, and the center of the tube is used for gas to pass. The outer wall of the first drying tube includes a cooling device, and the cooling medium is kept at a constant temperature of 70-80°C. Both ends of the first drying tube are quick-release and quick-install structures 7, which can be quickly connected to the pipes on both sides in an airtight manner, or can be removed separately.

[0035] The first drying device 2 is connected to the combustion furnace 3 through an oxygen mixing pipe 21. One side of the oxygen mixing pipe 21 is connected to an oxygen supply pipe 22, and the oxygen supply pipe 22 is connected to oxygen diluted with argon gas, and a certain amount of oxygen can be uniformly mixed into the oxygen mixing pipe 21 to obtain a mixture of oil and oxygen.

[0036] The combustion furnace 3 includes a flamethrower (such as Figure 2 As shown in the figure, the flamethrower 3 includes a plurality of discrete electronic ignition points 31, and a plurality of electronic ignition points 31 are arranged at intervals along the direction of gas flow, and the total length of the area occupied by the electronic ignition points 31 is 10-20 cm, so as to effectively burn all the oil and the like (mainly alkanes and a small amount of aromatic hydrocarbons) into water and carbon dioxide, and some nitrogen oxides and sulfur-containing compounds are converted into sulfur dioxide and nitrogen dioxide. Preferably, the mixture of oil and oxygen is introduced into the combustion furnace 3 through an air distribution device 32 having a plurality of air distribution holes, and the outside of the air distribution holes is connected to a section of air bleed nozzle 321, and the air bleed nozzle 321 has a certain inclination angle and is inclined toward the direction of the electronic ignition point 31. The electronic ignition point 31 is on the inside, and 2-3 air bleed nozzles 321 surround 1-2 electronic ignition points 31, so that the mixture of oil and oxygen sprayed by the air bleed nozzle 321 is sprayed just to the electronic ignition point 31 for full combustion. A group of electronic ignition points are provided above and below the combustion furnace 3 , and the gas distribution device 32 is connected to the oxygen mixing pipeline 21 , and the mixture of oxygen and oil is sprayed out from the gas distribution device 32 up and down, and concentrated on the electronic ignition point 31 through the air bleed nozzle 321 .

[0037] The combustion furnace 3 is connected to the second drying device 4 by a pipeline. The second drying device 4 is a second drying tube, in which phosphorus pentoxide is laid, and the center of the tube is used for gas to pass. The outer wall of the second drying tube includes a cooling device, and the cooling medium is kept at a constant temperature of 0-10°C. Both ends of the second drying tube are quick-disconnect and quick-install structures, which can be quickly connected to the pipelines on both sides in an airtight manner, and can also be removed separately.

[0038] The second drying device 4 is connected to the selective nitrogen dioxide and sulfur dioxide absorption device 5 by a pipeline. The selective nitrogen dioxide and sulfur dioxide absorption device 5 includes a reagent bottle, which contains concentrated sulfuric acid containing 1-5wt% water. The air inlet pipe 51 of the reagent bottle is inserted below the liquid level of the concentrated sulfuric acid, and the starting end of the air outlet pipe 52 is located above the liquid level of the concentrated sulfuric acid; the sulfur dioxide and nitrogen dioxide in the mixed gas are absorbed by the aqueous concentrated sulfuric acid. After the concentrated sulfuric acid absorbs NO2, the concentrated sulfuric acid appears light reddish brown and gradually deepens. A cooling device is provided outside the reagent bottle to make the temperature of the concentrated sulfuric acid not exceed 10°C to prevent the absorbed NO2 from overflowing again. Sulfur dioxide can also be absorbed by the aqueous concentrated sulfuric acid. Since the sulfur and nitrogen content in oil shale is low, the use of aqueous concentrated sulfuric acid can remove sulfur dioxide and nitrogen dioxide mixed in carbon dioxide at one time.

[0039] The selective nitrogen dioxide and sulfur dioxide absorption device 5 is connected to the carbon dioxide absorption device 6 through a pipeline, and the carbon dioxide is fixed by the carbon dioxide absorption device 6. The carbon dioxide absorption device 6 includes a reagent bottle, and the reagent bottle is filled with calcium hydroxide solution or sodium hydroxide solution. The air inlet pipe 61 of the reagent bottle is inserted below the liquid level of the calcium hydroxide or sodium hydroxide solution, and the starting end of the air outlet pipe 62 is located above the liquid level of the calcium hydroxide or sodium hydroxide solution, and a water-absorbing air-permeable plug 63 is provided between the liquid level of the calcium hydroxide or sodium hydroxide solution and the starting end of the air outlet pipe. The water-absorbing air-permeable plug 63 can be a filter paper or a water-absorbing sponge, and its main function is to prevent the carbon dioxide blasted into the calcium hydroxide or sodium hydroxide solution from overflowing quickly without fully reacting, and can provide a larger reaction pressure, so that all carbon dioxide is pressed into the liquid surface and reacts with sodium hydroxide or calcium hydroxide and is fixed. The water-absorbing air-permeable plug can also absorb the water vapor overflowed by the calcium hydroxide or sodium hydroxide solution, and prevent the water vapor from escaping with the argon gas, and after the mass is reduced, the carbon dioxide mass measurement value is smaller. The tail of the air outlet pipe 62 is connected to the tail gas tank.

[0040] Before using the above device to measure the carbon-hydrogen ratio of oil shale, the initial weights of the first drying device 2, the second drying device 4 and the carbon dioxide absorption device 6 are weighed as m1, m2 and m3; a certain mass of oil shale sample is placed in the dry distillation device 1, and the argon gas source is first turned on to pass argon into the dry distillation device 1 to drive away the oxygen in the dry distillation device 1 to prevent combustion during dry distillation. The dry distillation device 1 is an aluminum retort, which is heated to 550°C and kept warm for 20 minutes. During this process, argon is continuously passed into the cavity 10 of the dry distillation device 1 at a rate of 0.01-0.05 times the cavity volume / min to drive the water vapor and oil (aliphatic hydrocarbons and aromatic hydrocarbons) generated by dry distillation into the outlet pipe 11 and enter the first drying device 2. The cooling device outside the first drying device 2 is turned on to maintain the temperature at 75°C. The first drying device 2 is a drying tube, and phosphorus pentoxide is laid in the drying tube, and the center of the tube is available for gas to pass through. Phosphorus pentoxide absorbs water vapor and does not react with olefins (sulfuric acid cannot be used as a desiccant at this time). Therefore, after the phosphorus pentoxide is dried, the water vapor is removed to avoid interference with the subsequent hydrogen molar amount. Among them, the length of the first drying device 2 is 20-30cm. Before the oil enters the combustion furnace 3, it mixes with oxygen in the oxygen mixing pipe 21 and is ignited when passing through the multiple electronic ignition points 31 of the combustion furnace 3. The mixed gas generated after combustion continues to slowly enter the second drying device 3 under the promotion of argon gas. At this time, the outside of the second drying device 3 is cooled to 4°C, and most of the water vapor condenses into water droplets. The water vapor is absorbed when passing through the second drying device 3; the remaining nitrogen dioxide, carbon dioxide, sulfur dioxide, etc. enter the selective nitrogen dioxide and sulfur dioxide absorption device 5, and the nitrogen oxides and sulfur dioxide therein are absorbed by 98% concentrated sulfuric acid (to prevent nitrogen oxides from being released again, an external cooling device or an ice water bath is used to control the temperature of concentrated sulfuric acid at about 5°C), and the remaining argon gas, carbon dioxide and a small amount of oxygen enter the carbon dioxide absorption device 6 and are absorbed by sodium hydroxide. The tail gas is discharged through the water-absorbing air plug 63. The dry distillation is kept warm for 20 minutes. After the whole reaction is carried out for 50 minutes, all the carbon dioxide is absorbed. At this time, the first drying device 2 and the second drying device 4 and the carbon dioxide absorption device 6 are removed and weighed to obtain m4, m5, and m6. If the mass of the oil shale sample is m0, the water content in the oil shale sample = 100% * (m4-m1) / m0; the molar amount of carbon element in the combustible organic matter n2 = (m6-m3) / 44; the molar amount of hydrogen element in the combustible organic matter n1 = (m5-m2) / 18. In the oil shale sample, the hydrogen-carbon ratio of the combustible organic matter (kerogen) = 22 × (m5-m2) / [9 × (m6-m3)].

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laboratory method for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale, characterized in that: It includes: S1. Using a dry distillation method to distill the kerogen and water in the oil shale sample to form a mixed gas, and using an inert gas to drive the mixed gas into a first drying device to remove water vapor; S2, subjecting the dried mixed gas to oxygen combustion to form a mixed gas containing carbon dioxide, water vapor, nitrogen dioxide and sulfur dioxide; S3, the mixed gas obtained in S2 enters the second drying device to remove water vapor, the remaining gas enters the selective nitrogen dioxide and sulfur dioxide absorption device, and the remaining carbon dioxide enters the carbon dioxide absorption device to be absorbed; S4. Calculate the molar amount n1 of H based on the weight difference of the drying device in S3; calculate the molar amount n2 of C based on the weight difference of the carbon dioxide absorption device in S3; calculate the H / C ratio in the oil shale sample.

2. The method according to claim 1, characterized in that: In S1, the first drying device is a first drying tube, in which phosphorus pentoxide is paved; the first drying tube is detachably connected to the outlet pipe of the distillation device, and a cooling device is provided outside the outlet pipe and the first drying tube, and the temperature of the cooling medium in the cooling device is 70-80°C.

3. The method according to claim 1, characterized in that In S2, a combustion furnace is used for aerobic combustion, and the combustion furnace is connected to the first drying device through an oxygen mixing pipe; one side of the oxygen mixing pipe is connected to an oxygen supply pipe, and the oxygen supply pipe is connected to oxygen diluted with argon; the oxygen diluted with argon is diluted according to a volume ratio of argon to oxygen of 1-2:1; The combustion furnace includes a flamethrower, and the flamethrower includes a plurality of discrete electronic ignition points to control the distribution area of ​​the flame, avoid excessively concentrated combustion, and avoid local accumulation of heat and incomplete combustion of some gases.

4. The method according to claim 1, characterized in that In S3, the second drying device is a second drying tube, in which phosphorus pentoxide is paved; the second drying tube is connected to the combustion furnace through a pipeline, and a cooler is provided outside the second drying tube, and the temperature of the cooling medium in the cooler is 0-10°C.

5. The method according to claim 1, characterized in that In S3, the second drying device is a separately detachable structure.

6. The method according to claim 1, characterized in that In S3, the selective nitrogen dioxide and sulfur dioxide absorption device is filled with concentrated sulfuric acid containing 1-5wt% water, and the concentrated sulfuric acid is placed in a reagent bottle, the air inlet pipe of the reagent bottle is inserted below the concentrated sulfuric acid liquid level, and the starting end of the air outlet pipe is located above the concentrated sulfuric acid liquid level; sulfur dioxide and nitrogen dioxide in the mixed gas are absorbed by the cleaning effect of concentrated sulfuric acid; a cooling device is provided outside the reagent bottle.

7. The method according to claim 1, characterized in that In S3, the carbon dioxide absorption device is filled with calcium hydroxide or sodium hydroxide solution, which is placed in a reagent bottle. The air inlet pipe of the reagent bottle is inserted below the liquid level of the calcium hydroxide or sodium hydroxide solution, and the starting end of the air outlet pipe is located above the liquid level of the calcium hydroxide or sodium hydroxide solution; a water-absorbing and breathable plug is provided between the liquid level of the calcium hydroxide or sodium hydroxide solution and the starting end of the air outlet pipe.

8. A laboratory device for measuring the hydrogen-carbon atomic ratio of combustible organic matter in oil shale, characterized in that: It comprises a dry distillation device, a first drying device, a combustion furnace, a second drying device, a selective nitrogen dioxide and sulfur dioxide absorption device, and a carbon dioxide absorption device which are connected in sequence; The dry distillation device comprises a cavity, one side of the cavity is an outlet pipe, and the other side is an inlet pipe; the inlet pipe is introduced with argon gas at a rate of 0.01-0.05 times the volume of the cavity / min to drive the water vapor and kerogen generated in the dry distillation device to be discharged into the outlet pipe, and sequentially pass through a first drying device, a combustion furnace, a second drying device, a selective nitrogen dioxide and sulfur dioxide absorption device, and a carbon dioxide absorption device; The combustion furnace is connected to the first drying device through an oxygen mixing pipe, one side of the oxygen mixing pipe is connected to an oxygen supply pipe, and the oxygen supply pipe is connected to oxygen diluted by argon gas; the combustion furnace includes a flamethrower, and the flamethrower includes a plurality of discrete electronic ignition points; The first drying device, the second drying device and the carbon dioxide absorption device are independently detachable structures.

9. The device according to claim 8, characterized in that The dry distillation device is an aluminum retort; the first drying device is a first drying tube, and phosphorus pentoxide is paved in the first drying tube; the first drying tube is detachably connected to the outlet pipe of the dry distillation device, and a cooling device is provided outside the outlet pipe and the first drying tube, and the temperature of the cooling medium in the cooling device is 70-80°C; the second drying device is a second drying tube, and phosphorus pentoxide is paved in the second drying tube; the second drying tube is connected to the combustion furnace through a pipeline, and a cooler is provided outside the second drying tube, and the temperature of the cooling medium in the cooler is 0-10°C; The selective nitrogen dioxide and sulfur dioxide absorption device contains concentrated sulfuric acid containing 1-5wt% of water, and the concentrated sulfuric acid is placed in a reagent bottle, the air inlet pipe of the reagent bottle is inserted below the concentrated sulfuric acid liquid level, and the starting end of the air outlet pipe is located above the concentrated sulfuric acid liquid level; sulfur dioxide and nitrogen dioxide in the mixed gas are absorbed by the aqueous concentrated sulfuric acid; the reagent bottle is placed in a cooling medium to maintain the temperature of the aqueous concentrated sulfuric acid not exceeding 10°C.

10. The device according to claim 8, characterized in that The carbon dioxide absorption device contains calcium hydroxide or sodium hydroxide solution, which is placed in a reagent bottle. The air inlet pipe of the reagent bottle is inserted below the liquid level of the calcium hydroxide or sodium hydroxide solution, and the starting end of the air outlet pipe is located above the liquid level of the calcium hydroxide or sodium hydroxide solution; a water-absorbing and breathable plug is provided between the liquid level of the calcium hydroxide or sodium hydroxide solution and the starting end of the air outlet pipe.

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