Natural gas combustion waste treatment device

Abstract

The utility model relates to the technical field of natural gas, and discloses a natural gas combustion waste treatment device. In the utility model, the upper side of a water vapor evaporator main body is fixedly connected with the lower end of a water vapor backflow assembly, the output end of a water vapor guide pipe is fixedly connected with a reaction tank, the lower end of a water vapor backflow pipe is fixedly connected with the upper side of the water vapor evaporator main body, and the output end of a nitrogen guide pipe is fixedly connected with the reaction tank; a hydrocarbon reaction layer is arranged at the lower part in the reaction tank, a carbon monoxide reaction layer is arranged above the hydrocarbon reaction layer, a nitrogen oxide reaction layer is arranged between the carbon monoxide reaction layer and the tank cover, and hydrocarbon, carbon monoxide and nitrogen oxide in the natural gas combustion waste gas are removed through multi-layer reaction; and through cooperation of the water vapor evaporator, the water vapor backflow assembly and the air suction assembly, resources are recycled, and the problem that if existing natural gas combustion waste is directly discharged into air without treatment, the environment is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas, in particular to a device for treating waste generated by natural gas combustion. Background Art

[0002] Natural gas is mainly composed of methane, and also contains a small amount of hydrocarbon gases such as ethane, propane, butane, etc., as well as non-hydrocarbon gases such as nitrogen and carbon dioxide. It has the advantages of clean environmental protection, high energy efficiency, relatively convenient storage and transportation, and is widely used in residential life, industrial fields, and power generation fields.

[0003] The main components of the waste generated by natural gas combustion are carbon dioxide and water vapor. In the case of incomplete combustion, it will contain a small amount of hydrocarbons, nitrogen oxides, and carbon monoxide. These wastes generated by natural gas combustion need to be treated by comprehensively using a variety of technologies and methods to achieve the purpose of reducing environmental pollution and greenhouse gas emissions.

[0004] Therefore, in order to solve such problems, we have proposed a device for treating waste generated by natural gas combustion. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for treating waste generated by natural gas combustion, aiming to solve the problem in the above background art that if the existing waste generated by natural gas combustion is directly discharged into the air without treatment, it will affect the environment.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A device for treating waste generated by natural gas combustion includes an air inlet assembly and a reaction tank fixedly connected to the output end of the air inlet assembly. A water vapor reflux assembly is arranged on the side of the reaction tank away from the air inlet assembly. A water vapor evaporator is fixedly connected below the water vapor reflux assembly. On one side above the water vapor reflux assembly, a suction assembly is welded. The water vapor evaporator includes a water vapor evaporator main body and a water vapor guide pipe installed above the water vapor evaporator main body. The upper side of the water vapor evaporator main body is fixedly connected to the lower end of the water vapor reflux assembly. The output end of the water vapor guide pipe is fixedly connected to the reaction tank; The water vapor reflux assembly includes a water vapor reflux pipe and a nitrogen gas guide pipe fixedly connected to the side of the water vapor reflux pipe close to the reaction tank. The lower end of the water vapor reflux pipe is fixedly connected to the upper side of the water vapor evaporator main body. The output end of the nitrogen gas guide pipe is fixedly connected to the reaction tank;

[0007] The reaction tank includes a tank body and a tank cover arranged on the top of the tank body. The tank body is fixedly connected to the output end of the air inlet assembly. The other side of the tank body is respectively fixedly connected to the output end of the water vapor conduit and the output end of the nitrogen conduit. The water vapor conduit is located below the nitrogen conduit. A hydrocarbon reaction layer is arranged below the interior of the tank body, a carbon monoxide reaction layer is arranged above the hydrocarbon reaction layer, and a nitrogen oxide reaction layer is arranged between the carbon monoxide reaction layer and the tank cover.

[0008] Preferably, the air inlet assembly includes an air inlet pipe and an electromagnetic activation mechanism installed inside the output end of the air inlet pipe. A connecting pipe is installed at the output end of the air inlet pipe, and the end of the connecting pipe away from the air inlet pipe is fixedly connected to the tank body.

[0009] Preferably, the electromagnetic activation mechanism includes an electromagnetic activation mechanism housing and magnetic field generators installed on both sides inside the electromagnetic activation mechanism housing. The outside of the electromagnetic activation mechanism housing is fixedly connected to the inside of the air inlet pipe.

[0010] Preferably, a circular groove is penetrated through the tank cover. There are four circular grooves and they are distributed in a rectangle. An installation bracket is arranged inside the circular groove, a motor is fixedly connected above the installation bracket, and the driving end of the motor is connected to a fan blade through a rotating shaft.

[0011] Preferably, the hydrocarbon reaction layer includes a pressure regulating pipe 1 and a temperature regulator 1 installed inside the tank body. There are two pressure regulating pipes 1 and they are fixedly connected to the tank body. The other end of the pressure regulating pipe 1 is connected to a compressor. A partition plate 1 is installed above the temperature regulator 1. One side of the tank body below the partition plate 1 is fixedly connected to the water vapor conduit. Nickel powder is arranged at the bottom of the hydrocarbon reaction layer.

[0012] Preferably, the carbon monoxide reaction layer includes a pressure regulating pipe 2 and a temperature regulator 2 installed inside the tank body. There are two pressure regulating pipes 2 and they are fixedly connected to the tank body. The other end of the pressure regulating pipe 2 is connected to a compressor. A partition plate 2 is installed above the temperature regulator 2. One side of the tank body below the partition plate 2 is fixedly connected to the nitrogen conduit. Iron powder is arranged at the bottom of the carbon monoxide reaction layer.

[0013] Preferably, zeolite molecular sieve is arranged inside the water vapor return pipe.

[0014] Preferably, the air suction assembly includes an air suction hood and guide plates installed on both sides of the air suction hood. One end of the air suction hood is fixedly connected to the upper end of the water vapor return pipe.

[0015] The utility model has the following beneficial effects:

[0016] In this utility model, the upper side of the water vapor evaporator main body is fixedly connected to the lower end of the water vapor reflux assembly. The output end of the water vapor conduit is fixedly connected to the reaction tank. The lower end of the water vapor reflux pipe is fixedly connected to the upper side of the water vapor evaporator main body. The output end of the nitrogen conduit is fixedly connected to the reaction tank. A hydrocarbon reaction layer is arranged below the interior of the reaction tank. A carbon monoxide reaction layer is arranged above the hydrocarbon reaction layer. A nitrogen oxide reaction layer is arranged between the carbon monoxide reaction layer and the tank lid. Hydrocarbons, carbon monoxide, and nitrogen oxides in the natural gas combustion waste gas are removed through multiple-layer reactions. Through the cooperation of the water vapor evaporator, the water vapor reflux assembly, and the air suction assembly, resource recycling is achieved. Description of the Drawings

[0017] Figure 1 A three-dimensional schematic diagram of a natural gas combustion waste treatment device proposed by this utility model;

[0018] Figure 2 A plan schematic diagram of the air intake assembly in a natural gas combustion waste treatment device proposed by this utility model;

[0019] Figure 3 A three-dimensional schematic diagram of the electromagnetic activation mechanism in a natural gas combustion waste treatment device proposed by this utility model;

[0020] Figure 4 A three-dimensional schematic diagram of the reaction tank in a natural gas combustion waste treatment device proposed by this utility model;

[0021] Figure 5 A plan schematic diagram of the reaction tank in a natural gas combustion waste treatment device proposed by this utility model;

[0022] Figure 6 A plan schematic diagram of the water vapor evaporator, the water vapor reflux assembly, and the air suction assembly in a natural gas combustion waste treatment device proposed by this utility model.

[0023] Legend Explanation:

[0024] 1. Intake assembly; 11. Intake pipe; 12. Electromagnetic activation mechanism; 121. Electromagnetic activation mechanism housing; 122. Magnetic field generator; 13. Connecting pipe; 2. Reaction tank; 21. Tank body; 22. Tank cover; 221. Circular groove; 222. Mounting bracket; 223. Motor; 224. Fan blade; 23. Hydrocarbon reaction layer; 231. Pressure regulating pipe 1; 232. Temperature regulator 1; 233. Partition plate 1; 234. Nickel powder; 24. Carbon monoxide reaction layer; 241. Pressure regulating pipe 2; 242. Temperature regulator 2; 243. Partition plate 2; 244. Iron powder; 25. Nitrogen oxide reaction layer; 3. Steam evaporator; 31. Steam evaporator main body; 32. Steam conduit; 4. Steam reflux assembly; 41. Steam reflux pipe; 42. Nitrogen conduit; 43. Zeolite molecular sieve; 5. Suction assembly; 51. Suction hood; 52. Guide plate. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Please refer to Figure 1 , Figure 4 , Figure 5 , Figure 6, An embodiment provided by the present utility model: A natural gas combustion waste treatment device includes an intake assembly 1 and a reaction tank 2 fixedly connected to the output end of the intake assembly 1. A water vapor reflux assembly 4 is provided on the side of the reaction tank 2 away from the intake assembly 1. A water vapor evaporator 3 is fixedly connected below the water vapor reflux assembly 4. On one side above the water vapor reflux assembly 4, an air suction assembly 5 is welded. The water vapor evaporator 3 includes a water vapor evaporator main body 31 and a water vapor guide pipe 32 installed above the water vapor evaporator main body 31. The upper side of the water vapor evaporator main body 31 is fixedly connected to the lower end of the water vapor reflux assembly 4. The output end of the water vapor guide pipe 32 is fixedly connected to the reaction tank 2; the water vapor reflux assembly 4 includes a water vapor reflux pipe 41 and a nitrogen gas guide pipe 42 fixedly connected to the side of the water vapor reflux pipe 41 close to the reaction tank 2. The lower end of the water vapor reflux pipe 41 is fixedly connected to the upper side of the water vapor evaporator main body 31. The output end of the nitrogen gas guide pipe 42 is fixedly connected to the reaction tank 2; the reaction tank 2 includes a tank body 21 and a tank cover 22 provided on the top of the tank body 21. The tank body 21 is fixedly connected to the output end of the intake assembly 1. The other side of the tank body 21 is respectively fixedly connected to the output end of the water vapor guide pipe 32 and the output end of the nitrogen gas guide pipe 42. The water vapor guide pipe 32 is located below the nitrogen gas guide pipe 42. A hydrocarbon reaction layer 23 is provided below the interior of the tank body 21. A carbon monoxide reaction layer 24 is provided above the hydrocarbon reaction layer 23. A nitrogen oxide reaction layer 25 is provided between the carbon monoxide reaction layer 24 and the tank cover 22. Natural gas combustion waste gas is introduced into the tank body 21 from the input end of the intake assembly 1. The unburned hydrocarbons in the natural gas are treated in the hydrocarbon reaction layer 23, the unburned carbon monoxide in the natural gas is treated in the carbon monoxide reaction layer 24, and the nitrogen oxides generated by the natural gas combustion are treated in the nitrogen oxide reaction layer 25. Finally, water vapor, nitrogen gas, and carbon dioxide harmless to the environment are obtained. The water vapor and nitrogen gas re-participate in the reaction through the water vapor reflux assembly 4, achieving the full utilization of resources.

[0028] Please refer to Figure 2 , The intake assembly 1 includes an intake pipe 11 and an electromagnetic activation mechanism 12 installed inside the output end of the intake pipe 11. A connecting pipe 13 is installed at the output end of the intake pipe 11. One end of the connecting pipe 13 away from the intake pipe 11 is fixedly connected to the tank body 21. By setting the electromagnetic activation mechanism 12, the gas enters the combustion device more stably.

[0029] Please refer to Figure 3, the electromagnetic activation mechanism 12 includes an electromagnetic activation mechanism housing 121 and magnetic field generators 122 installed on both sides inside the electromagnetic activation mechanism housing 121. The outside of the electromagnetic activation mechanism housing 121 is fixedly connected to the inside of the intake pipe 11. By setting the magnetic field generators 122, the spin directions of the hydrogen nuclei of the unburned hydrocarbons are made consistent, and a certain stable repulsive force is generated between the molecules, so that the distance between the hydrocarbon molecules becomes larger, increasing the contact area with oxygen and achieving the purpose of complete combustion.

[0030] Please refer to Figure 4 , a circular groove 221 is penetrated through the tank lid 2. There are four circular grooves 221 and they are distributed in a rectangle. An installation bracket 222 is arranged inside the circular groove 221. A motor 223 is fixedly connected above the installation bracket 222. The driving end of the motor 223 is connected to a fan blade 224 through a rotating shaft. By driving the fan blade 224 to rotate through the motor 223, the gas generated by the reaction in the tank body 21 flows upward and is discharged, and enters the suction assembly 5.

[0031] Please refer to Figure 5 、 Figure 6 , the hydrocarbon reaction layer 23 includes a first pressure regulating pipe 231 and a first temperature regulator 232 installed inside the tank body 21. There are two first pressure regulating pipes 231 and they are fixedly connected to the tank body 21. The other end of the first pressure regulating pipe 231 is connected to a compressor. A first partition plate 233 is installed above the first temperature regulator 232. One side of the tank body 21 below the first partition plate 233 is fixedly connected to the water vapor guide pipe 32. Nickel powder 234 is arranged at the bottom of the hydrocarbon reaction layer 23. The water vapor generated by the water vapor evaporator main body 31 enters the hydrocarbon reaction layer 23 through the water vapor guide pipe 32. The pressure is adjusted to 1 - 3 MPa through the first pressure regulating pipe 231, and the temperature is heated to 700 - 1000 °C through the first temperature regulator 232. Under the condition that nickel powder 234 acts as a catalyst, the hydrocarbons in the natural gas combustion exhaust gas react with water vapor to generate hydrogen and carbon monoxide.

[0032] Please refer to Figure 5 、 Figure 6, the carbon monoxide reaction layer 24 includes a second pressure regulating pipe 241 and a second temperature regulator 242 installed inside the tank body 21. There are two second pressure regulating pipes 241 which are fixedly connected to the tank body 21. The other end of the second pressure regulating pipe 241 is connected to a compressor. A second partition plate 243 is installed above the second temperature regulator 242. One side of the tank body 21 below the second partition plate 243 is fixedly connected to a nitrogen gas conduit 42. Iron powder 244 is provided at the bottom of the carbon monoxide reaction layer 24. Nitrogen gas is introduced into the carbon monoxide reaction layer 24 through the nitrogen gas conduit 42. The pressure is adjusted to 20 - 50 MPa through the second pressure regulating pipe 241, and the temperature is heated to 400 - 500 °C through the second temperature regulator 242, so that the carbon monoxide in the natural gas combustion exhaust gas and the carbon monoxide generated by the reaction in the hydrocarbon reaction layer 23 both react with hydrogen to produce carbon dioxide and water. Nitrogen gas and hydrogen react under the catalytic action of the iron powder 244 to produce ammonia, which enters the nitrogen oxide reaction layer 25. Ammonia and the nitrogen oxides in the natural gas combustion waste undergo a selective catalytic reduction reaction in the nitrogen oxide reaction layer 25 to produce nitrogen gas and water vapor. The nitrogen gas re-enters the carbon monoxide reaction layer 24 through the nitrogen gas conduit 42 to participate in the reaction, and the water vapor re-flows back to the water vapor evaporator main body 31 through the water vapor conduit 41 and then enters the hydrocarbon reaction layer 23 to participate in the reaction.

[0033] Please refer to Figure 6 , a zeolite molecular sieve 43 is provided inside the water vapor return pipe 41. The zeolite molecular sieve 43 only allows water vapor to pass through, preventing other impurities from entering the water vapor evaporator main body 31.

[0034] Please refer to Figure 6 , the suction assembly 5 includes a suction hood 51 and guide plates 52 installed on both sides of the suction hood 51. One end of the suction hood 51 is fixedly connected to the upper end of the water vapor return pipe 41, fully guiding the water vapor above the reaction tank 2 to the water vapor return assembly 4.

[0035] Working principle: Natural gas combustion exhaust gas is introduced into the tank body 21 through the input end of the inlet pipe 11. In the hydrocarbon reaction layer 23, the hydrocarbons in the natural gas combustion exhaust gas react with water vapor to produce hydrogen and carbon monoxide; in the carbon monoxide reaction layer 24, the carbon monoxide in the natural gas combustion exhaust gas and the carbon monoxide generated by the reaction in the hydrocarbon reaction layer 23 both react with hydrogen to produce carbon dioxide and water, and nitrogen gas and hydrogen react to produce ammonia, which enters the nitrogen oxide reaction layer 25; in the nitrogen oxide reaction layer 25, ammonia and the nitrogen oxides in the natural gas combustion waste undergo a selective catalytic reduction reaction to produce nitrogen gas and water vapor. The nitrogen gas re-enters the carbon monoxide reaction layer 24 through the nitrogen gas conduit 42 to participate in the reaction, and the water vapor re-flows back to the water vapor evaporator main body 31 through the water vapor conduit 41 and then enters the hydrocarbon reaction layer 23 to participate in the reaction, achieving the full utilization of resources.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A natural gas combustion waste treatment device, comprising an air intake assembly (1) and a reaction tank (2) fixedly connected to the output end of the air intake assembly (1). A water vapor reflux assembly (4) is arranged on one side of the reaction tank (2) away from the air intake assembly (1). A water vapor evaporator (3) is fixedly connected below the water vapor reflux assembly (4). An air suction assembly (5) is welded on one side above the water vapor reflux assembly (4), and it is characterized in that: The steam evaporator (3) includes a steam evaporator main body (31) and a steam conduit (32) installed above the steam evaporator main body (31). The upper side of the steam evaporator main body (31) is fixedly connected to the lower end of the steam reflux assembly (4), and the output end of the steam conduit (32) is fixedly connected to the reaction tank (2). The steam reflux assembly (4) includes a steam reflux pipe (41) and a nitrogen conduit (42) fixedly connected to one side of the steam reflux pipe (41) close to the reaction tank (2). The lower end of the steam reflux pipe (41) is fixedly connected to the upper side of the steam evaporator main body (31), and the output end of the nitrogen conduit (42) is fixedly connected to the reaction tank (2). The reaction tank (2) includes a tank body (21) and a tank cover (22) arranged at the top of the tank body (21). The tank body (21) is fixedly connected to the output end of the intake assembly (1). The other side of the tank body (21) is respectively fixedly connected to the output end of the steam conduit (32) and the output end of the nitrogen conduit (42). The steam conduit (32) is located below the nitrogen conduit (42). A hydrocarbon reaction layer (23) is arranged below the interior of the tank body (21), a carbon monoxide reaction layer (24) is arranged above the hydrocarbon reaction layer (23), and a nitrogen oxide reaction layer (25) is arranged between the carbon monoxide reaction layer (24) and the tank cover (22).

2. The natural gas combustion waste treatment device according to claim 1, wherein: The intake assembly (1) includes an intake pipe (11) and an electromagnetic activation mechanism (12) installed inside the output end of the intake pipe (11). A connecting pipe (13) is installed at the output end of the intake pipe (11), and one end of the connecting pipe (13) away from the intake pipe (11) is fixedly connected to the tank body (21).

3. The natural gas combustion waste treatment device according to claim 2, characterized in that: The electromagnetic activation mechanism (12) includes an electromagnetic activation mechanism housing (121) and magnetic field generators (122) installed on both sides inside the electromagnetic activation mechanism housing (121). The outside of the electromagnetic activation mechanism housing (121) is fixedly connected to the inside of the intake pipe (11).

4. A natural gas combustion waste treatment device according to claim 1, characterized in that: A circular groove (221) is penetrated through the tank cover (22). Four circular grooves (221) are provided and are distributed in a rectangular shape. An installation bracket (222) is arranged inside the circular groove (221). A motor (223) is fixedly connected above the installation bracket (222), and a fan blade (224) is connected to the driving end of the motor (223) through a rotating shaft.

5. A natural gas combustion waste treatment device according to claim 1, characterized in that: The hydrocarbon reaction layer (23) includes a pressure adjustment pipe 1 (231) and a temperature regulator 1 (232) installed inside the tank body (21). Two pressure adjustment pipes 1 (231) are provided and are fixedly connected to the tank body (21). The other end of the pressure adjustment pipe 1 (231) is connected to a compressor. A partition plate 1 (233) is installed above the temperature regulator 1 (232). One side of the tank body (21) below the partition plate 1 (233) is fixedly connected to the steam conduit (32). Nickel powder (234) is arranged at the bottom of the hydrocarbon reaction layer (23).

6. A natural gas combustion waste treatment device according to claim 1, characterized in that: The carbon monoxide reaction layer (24) includes two pressure regulating pipes two (241) and a temperature regulator two (242) installed inside the tank body (21). There are two pressure regulating pipes two (241) which are fixedly connected to the tank body (21), and the other ends of the pressure regulating pipes two (241) are connected to a compressor. A partition plate two (243) is installed above the temperature regulator two (242). One side of the tank body (21) below the partition plate two (243) is fixedly connected to a nitrogen gas conduit (42). Iron powder (244) is provided at the bottom of the carbon monoxide reaction layer (24).

7. The natural gas combustion waste treatment device according to claim 1, characterized in that: Zeolite molecular sieve (43) is provided inside the water vapor return pipe (41).

8. The natural gas combustion waste treatment device according to claim 4, characterized in that: The air suction assembly (5) includes an air suction hood (51) and guide plates (52) installed on both sides of the air suction hood (51). One end of the air suction hood (51) is fixedly connected to the upper end of the water vapor return pipe (41).

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