Flue waste gas collecting device capable of reducing carbon emission of gas engine

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a flue gas collecting device capable of reducing carbon emission of a gas engine, which comprises a shell and a filter layer mounted in the shell and used for absorbing carbon-containing gas. The filter layer comprises filter paper used for absorbing carbon monoxide, a filter screen used for absorbing carbon dioxide, a gas filtering cavity used for discharging filtered waste gas, a top cover and a bottom cover, the top cover and the bottom cover are fixedly provided with the filter layer, the filter layer is installed in the center inside the shell, the gas inlet is formed in the top of the shell, the gas outlet is formed in the bottom of the shell, and the filter paper is installed on the outer side of the filter layer and located inside the shell. The filter screen is installed in the center inside the filter layer, the top cover is installed at one end of the filter layer and close to the air inlet, and the bottom cover is installed at one end of the filter layer and close to the air outlet. The two layers of filtering systems are used for treating two kinds of carbon-containing gas in sequence, the cooling step is omitted, the structure is small and exquisite, replacement is convenient, the device is suitable for flues of gas engines of various sizes, and the alarming device is arranged so that replacement can be carried out in time, and the gas filtering capacity can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a flue gas waste gas collection device for reducing carbon emissions of a gas engine. Background Technique

[0002] When a gas engine works, a large amount of waste gas will be generated. The waste gas mainly includes two kinds of carbon-containing gases, carbon monoxide and carbon dioxide, as well as some nitrogen- and sulfur-containing waste gas. In order to reduce the emission of greenhouse gases, it is necessary to recover and treat the carbon-containing gases in the waste gas. Therefore, a collection device is needed to filter the carbon-containing gases.

[0003] Chinese patent document CN113546516A discloses a CO2 collection device for a boiler, including a boiler exhaust pipe. The boiler exhaust pipe is connected to an oxidation pipe. A CuO powder layer is arranged inside the oxidation pipe. The tail end of the oxidation pipe is connected to a smoke pipe. The other end of the smoke pipe is connected to a bag-type dust collector. The air outlet end of the bag-type dust collector is connected to a recovery tower. The recovery tower is connected to a refrigerator. The upper air outlet of the recovery tower is connected to a waste gas collection device. In this application, by setting an oxidation section, CO and NO in the gas are oxidized into more stable CO2 and NO2 by using CuO and the waste heat of the flue gas. After oxidation, the gas is cooled down. The gas is passed into a dust removal device to remove most of the particulate matter in the gas. After being treated by the dust removal device, the gas is passed into a low-temperature recovery tower. According to the different physical and chemical properties of the gas, the gas is fractionated at low temperature, and NO2 and SO2 in the gas are removed and collected. At the end, the CO2 gas containing a small amount of particulate matter is collected and stored in a sealed manner for comprehensive utilization, so as to achieve the purpose of reducing carbon emissions.

[0004] The above scheme still has several improvement points: complex steps are required for low-temperature fractionation of high-temperature waste gas to remove carbon dioxide, resulting in a large collection device; copper oxide is a consumable carbon-absorbing material, and it is impossible to know the timing of replacing the absorption material in time. Content of the Utility Model

[0005] In order to solve the problems of the prior art, the utility model provides a flue gas waste gas collection device for reducing carbon emissions of a gas engine, including a shell and a filter layer installed in the shell for absorbing carbon-containing gases. The filter layer includes filter paper for absorbing carbon monoxide, a filter screen for absorbing carbon dioxide, a filter gas chamber for discharging the filtered waste gas, a top cover and a bottom cover for fixedly installing the filter layer. The filter layer is installed at the center inside the shell. The air inlet is arranged at the top of the shell, and the air outlet is arranged at the bottom of the shell. The filter paper is installed on the outside of the filter layer and is inside the shell. The filter screen is installed at the center inside the filter layer. The top cover is installed at one end of the filter layer and is close to the air inlet. The bottom cover is installed at one end of the filter layer and is close to the air outlet. The filter gas chamber is installed at the center of the bottom cover and is connected to the filter screen.

[0006] Preferably, a first cavity is arranged between the filter paper and the shell, and a large amount of copper oxide powder is attached to the filter paper.

[0007] Preferably, mounting brackets are provided at both the upper and lower ends of the filter screen. A second cavity is provided between the filter screen and the filter layer, and quicklime is attached to the filter screen.

[0008] Preferably, the air filter cavity includes a first spring, a through hole, and a valve plate. One end of the first spring is connected to the inner top end of the air filter cavity, and the other end is connected to the valve plate. The through hole is provided on the upper surface of the air filter cavity.

[0009] Preferably, the top cover includes a check valve and a lower ring bracket. The check valve is installed on the upper surface of the top cover, and the lower ring bracket is installed at the edge of the lower surface of the top cover.

[0010] Preferably, the check valve includes a second spring, a fitting groove, and an inclined plate. The second spring is installed between the check valve and the top cover. The fitting groove is provided on the upper surface of the top cover, and the inclined plate surrounds the outside of the check valve.

[0011] Preferably, the bottom cover is provided with a valve port, an upper ring bracket, and an alarm. The valve port is provided at the center of the bottom cover. The upper ring bracket is installed on the upper surface of the bottom cover, and the alarm is provided at the edge of the bottom cover.

[0012] Preferably, the alarm includes a positioning hole, a sealing piece, and a sounding groove. The positioning hole is provided on the bottom cover. The sealing piece is installed at the bottom of the alarm, and the sounding grooves are arranged in an array in the alarm.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] 1. The present utility model uses a two-layer filtering system to sequentially process two kinds of carbon-containing gases, omitting the cooling step. Specifically, under the action of the high temperature carried by the waste gas, carbon monoxide in the waste gas is absorbed by reaction with the filter paper, and carbon dioxide is absorbed by the filter screen. Stable gases in the waste gas, such as nitrogen, sulfur dioxide, etc., are discharged from the air outlet and collected by the housing for centralized treatment.

[0015] 2. The structure of the present utility model is small and convenient for replacement, and is suitable for flue ducts of various sizes of gas engines. Specifically, the waste gas collection device is connected to the flue duct of the gas engine through the air inlet on the housing, and the filtered gas is discharged from the air outlet, which is plug-and-play and convenient for replacement.

[0016] 3. The present utility model is provided with an alarm device to ensure the air filtering capacity by timely replacement. Specifically, when the sealing piece is washed away from the alarm, the waste gas flows along the alarm to the air outlet, and the airflow will generate a sound after passing through the sounding groove to prompt the staff to remove the collection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional view of a flue gas waste gas collection device for reducing carbon emissions of a gas engine Figure 1 .

[0018] Figure 2 is a three-dimensional view of a flue gas collection device for reducing carbon emissions of a gas engine Figure 2 .

[0019] Figure 3 is a cross-sectional view of the housing in a flue gas collection device for reducing carbon emissions of a gas engine

[0020] Figure 4 is a three-dimensional view of the filter layer in a flue gas collection device for reducing carbon emissions of a gas engine

[0021] Figure 5 is a three-dimensional view of the top cover in a flue gas collection device for reducing carbon emissions of a gas engine

[0022] Figure 6 is an exploded view of the parts of the filter layer in a flue gas collection device for reducing carbon emissions of a gas engine

[0023] Figure 7 is a three-dimensional view of the bottom cover in a flue gas collection device for reducing carbon emissions of a gas engine

[0024] Figure 8 is a three-dimensional view of the alarm in a flue gas collection device for reducing carbon emissions of a gas engine

[0025] The reference numerals in the figure are: 1. housing; 2. filter layer; 3. filter paper; 31. first cavity; 4. filter screen; 41. second cavity; 42. mounting frame; 5. air filtration cavity; 51. first spring; 52. through hole; 53. valve plate; 6. top cover; 61. check valve; 611. second spring; 612. fitting groove; 613. inclined plate; 62. lower ring frame; 7. bottom cover; 71. valve port; 72. upper ring frame; 73. alarm; 731. positioning hole; 732. sealing piece; 733. sounding groove; 8. air inlet; 9. air outlet Detailed implementation manners

[0026] In order to further understand the features, technical means, specific purposes and functions achieved by the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners

[0027] See Figures 1 to 8As shown in the figure, a flue gas collection device for reducing carbon emissions of a gas engine includes a housing 1 and a filter layer 2 installed in the housing 1 for absorbing carbon-containing gases. The filter layer 2 includes a filter paper 3 for absorbing carbon monoxide, a filter screen 4 for absorbing carbon dioxide, a filter cavity 5 for discharging the filtered waste gas, a top cover 6 and a bottom cover 7 for fixedly installing the filter layer 2. The filter layer 2 is installed at the center inside the housing 1. An air inlet 8 is provided at the top of the housing 1, and an air outlet 9 is provided at the bottom of the housing 1. The filter paper 3 is installed on the outside of the filter layer 2 and inside the housing 1. The filter screen 4 is installed at the center inside the filter layer 2. The top cover 6 is installed at one end of the filter layer 2 and close to the air inlet 8. The bottom cover 7 is installed at one end of the filter layer 2 and close to the air outlet 9. The filter cavity 5 is installed at the center of the bottom cover 7 and connected to the filter screen 4.

[0028] The waste gas collection device is connected to the flue of the gas engine through the air inlet 8 on the housing 1. After the waste gas enters the inside of the housing 1, it enters the inside of the filter layer 2 from the outside of the filter layer 2, and finally is discharged from the filter cavity 5 to the exhaust port and then leaves the housing 1. During this process, under the action of the high temperature carried by the waste gas, carbon monoxide in the waste gas is absorbed by the reaction of the filter paper 3, carbon dioxide is absorbed by the filter screen 4, and the carbon-containing substances in the waste gas are all absorbed inside the housing 1. Stable gases in the waste gas such as nitrogen and sulfur dioxide are discharged from the air outlet 9 and the housing 1 for centralized treatment. The top cover 6 is elastic and automatically closes the air inlet 8 to prevent carbon-containing gas leakage when the device is separated from the gas engine flue. The bottom cover 7 has an alarm function. When the absorption capacity of the filter paper 3 and the filter screen 4 decreases, the bottom cover 7 will make a sound to prompt the staff to replace them.

[0029] See Figures 3 to 6 As shown in the figure, a first cavity 31 is provided between the filter paper 3 and the housing 1, and a large amount of copper oxide powder is attached to the filter paper 3.

[0030] Due to the high temperature carried by the waste gas, copper oxide will undergo an oxidation-reduction reaction with carbon monoxide in the waste gas at high temperature to produce copper and carbon dioxide. The first cavity 31 is used to store the generated copper, and the generated carbon dioxide enters the filter screen 4 together with the waste gas through the filter layer 2 for secondary filtration.

[0031] See Figures 3 to 6 As shown in the figure, mounting frames 42 are provided at the upper and lower ends of the filter screen 4. A second cavity 41 is provided between the filter screen 4 and the filter layer 2, and quicklime is attached to the filter screen 4.

[0032] In a high-temperature environment, quicklime will react with carbon dioxide to form calcium carbonate solids, which are stored in the second cavity 41. At this time, the carbon-free waste gas is discharged from the inside of the filter screen 4 through the filter cavity 5 to the filter layer 2. The mounting frames 42 are used to fix the filter screen 4 to prevent it from deforming.

[0033] See Figures 3 to 7As shown, the air filtering chamber 5 includes a first spring 51, a through hole 52, and a valve plate 53. One end of the first spring 51 is connected to the inner top end of the air filtering chamber 5, and the other end is connected to the valve plate 53. The through hole 52 is provided on the upper surface of the air filtering chamber 5.

[0034] The air filtering chamber 5 is used to discharge carbon-free exhaust gas. The through hole 52 provides a moving guide for the carbon-free gas in the filter screen 4. Since the gas engine flue continuously increases the air pressure in the housing 1, when the air pressure is greater than the elastic force of the first spring 51, the valve plate 53 is pushed up, and the carbon-free exhaust gas enters the air outlet 9 from the air filtering chamber 5. When the filter paper 3 and the filter screen 4 reach the absorption limit, the generated solid will block the filter paper 3 and the filter screen 4, causing the air pressure inside the filter screen 4 to drop. At this time, the first spring 51 resets and pulls the valve plate 53 back again, disconnecting the connection between the air filtering chamber 5 and the air outlet 9.

[0035] See Figures 3 to 5 As shown, the top cover 6 includes a check valve 61 and a lower ring frame 62. The check valve 61 is installed on the upper surface of the top cover 6, and the lower ring frame 62 is installed at the edge of the lower surface of the top cover 6.

[0036] The function of the check valve 61 is to prevent the uncarbonated exhaust gas inside the housing 1 from leaking out of the housing 1 through the air inlet 8 after the device is disassembled. The lower ring frame 62 is used to position the filter paper 3 to prevent it from being displaced by the air pressure impact.

[0037] See Figure 5 As shown, the check valve 61 includes a second spring 611, a fitting groove 612, and an inclined plate 613. The second spring 611 is installed between the check valve 61 and the top cover 6. The fitting groove 612 is provided on the upper surface of the top cover 6. The inclined plate 613 surrounds the outside of the check valve 61.

[0038] The second spring 611 provides the reset ability for the check valve 61. When the air inlet 8 is connected to the gas engine flue, the check valve 61 is squeezed into the fitting groove 612, and the exhaust gas enters the filter paper 3 along the inclined plate 613 from the inner edge of the housing 1. When the device is disassembled, the check valve 61 loses the extrusion of the flue and resets under the elastic force of the second spring 611. At this time, the check valve 61 and the inclined plate 613 together close the air inlet 8.

[0039] See Figures 3 to 7 As shown, the bottom cover 7 is provided with a valve port 71, an upper ring frame 72, and an alarm 73. The valve port 71 is provided at the center of the bottom cover 7. The upper ring frame 72 is installed on the upper surface of the bottom cover 7. The alarm 73 is provided at the edge of the bottom cover 7.

[0040] The size of the valve port 71 corresponds to that of the valve plate 53 in the air filtering chamber 5, ensuring that when the air filtering chamber 5 is closed, the valve plate 53 and the valve port 71 can fit completely. The upper ring frame 72 has the same size as the lower ring frame 62 on the top cover 6, and the two together fix the two ends of the filter paper 3. The alarm 73 is used to make a sound to remind replacement after the filter paper 3 and the filter screen 4 fail.

[0041] See Figure 7 and Figure 8 As shown, the alarm 73 includes a positioning hole 731, a sealing piece 732 and a sounding groove 733. The positioning hole 731 is provided on the bottom cover 7. The sealing piece 732 is installed at the bottom of the alarm 73, and the sounding groove array is arranged in the alarm 73.

[0042] The positioning hole 731 is used to install and position the alarm 73. Since the filter paper 3 and the filter screen 4 block the filter layer 2 after reaching the absorption limit, the air filter cavity 5 is closed, and the excessive air pressure in the housing 1 will impact the sealing piece 732 on the alarm 73. When the sealing piece 732 is flushed away from the alarm 73, the waste gas flows along the alarm 73 to the air outlet 9, and the air flow will generate a sound after passing through the sounding groove 733 to prompt the staff to remove the collection device.

[0043] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A flue gas collection device for reducing carbon emissions from a gas engine, comprising a housing (1) and a filter layer (2) installed in the housing (1) for absorbing carbon-containing gas; It is characterized in that The filter layer (2) comprises a filter paper (3) for absorbing carbon monoxide, a filter screen (4) for absorbing carbon dioxide, a filter cavity (5) for discharging filtered waste gas, a top cover (6) and a bottom cover (7) for fixing the filter layer (2); the filter layer (2) is installed at the center of the interior of the housing (1); the air inlet (8) is arranged at the top of the housing (1); the air outlet (9) is arranged at the bottom of the housing (1); the filter paper (3) is installed on the outside of the filter layer (2) and is located inside the housing (1); the filter screen (4) is installed at the center of the interior of the filter layer (2); the top cover (6) is installed at one end of the filter layer (2) and is close to the air inlet (8); the bottom cover (7) is installed at one end of the filter layer (2) and is close to the air outlet (9); the filter cavity (5) is installed at the center of the bottom cover (7) and is connected to the filter screen (4).

2. A flue gas collection device for reducing carbon emissions from gas engines according to claim 1, characterized in that: A first cavity (31) is provided between the filter paper (3) and the housing (1), and a large amount of copper oxide powder is attached to the filter paper (3).

3. A flue gas collection device for reducing carbon emissions from gas engines according to claim 1, characterized in that: Mounting frames (42) are provided at the upper and lower ends of the filter screen (4), a second cavity (41) is provided between the filter screen (4) and the filter layer (2), and quicklime is attached to the filter screen (4).

4. A flue gas collection device for reducing carbon emissions from gas engines according to claim 1, characterized in that: The air filter chamber (5) comprises a first spring (51), a through hole (52) and a valve plate (53); one end of the first spring (51) is connected to the inner top end of the air filter chamber (5), and the other end is connected to the valve plate (53); the through hole (52) is arranged on the upper surface of the air filter chamber (5).

5. The flue gas collection device for reducing carbon emissions from gas engines according to claim 1, characterized in that: The top cover (6) comprises a check valve (61) and a lower ring frame (62), wherein the check valve (61) is mounted on the upper surface of the top cover (6), and the lower ring frame (62) is mounted on the edge of the lower surface of the top cover (6).

6. A flue gas collection device for reducing carbon emissions from gas engines according to claim 5, characterized in that: The check valve (61) comprises a second spring (611), an engaging groove (612) and an inclined plate (613), wherein the second spring (611) is installed between the check valve (61) and the top cover (6), the engaging groove (612) is arranged on the upper surface of the top cover (6), and the inclined plate (613) surrounds the outer side of the check valve (61).

7. A flue gas collection device for reducing carbon emissions from gas engines according to claim 1, characterized in that: The bottom cover (7) is provided with a valve port (71), an upper ring frame (72) and an alarm (73); the valve port (71) is arranged at the center of the bottom cover (7); the upper ring frame (72) is installed on the upper surface of the bottom cover (7); and the alarm (73) is arranged at the edge of the bottom cover (7).

8. A flue gas collection device for reducing carbon emissions from gas engines according to claim 7, characterized in that: The alarm (73) comprises a positioning hole (731), a sealing sheet (732) and a sound-generating slot (733); the positioning hole (731) is arranged on the bottom cover (7); the sealing sheet (732) is installed at the bottom of the alarm (73); and the sound-generating slot array is arranged in the alarm (73).

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