A hydrocarbon-containing waste gas recovery and energy-saving device

Abstract

The utility model relates to the field of waste gas recovery and energy-saving devices, and more specifically, to a hydrocarbon-containing waste gas recovery and energy-saving device. It includes an air intake part, a filter part and a processing part. A flow collecting pipe is connected between the air intake part and the filter part, and a flow dividing pipe is connected between the filter part and the processing part. The air intake part includes a plurality of waste gas intake pipes, and the plurality of waste gas intake pipes are connected to the flow collecting pipe. The filter part includes two filter components, and the filter component includes a first air pressure detection butterfly valve and a bag filter. The air intake end of the first air pressure detection butterfly valve is connected to the flow collecting pipe, and the first air pressure detection butterfly valve is connected to the air intake end of the bag filter. The utility model adds a pressure regulating valve to the outlet main pipe of the bag filter, and adjusts its opening by pressure to prevent the pressure to the waste gas treatment unit RTO from being too low. The tail gas generated by the degassing bin uses the wind pressure provided by the degassing fan to directly send the waste gas to the waste gas treatment unit RTO, thereby greatly reducing the consumption of electric energy.

Description

Technical Field

[0001] The utility model relates to the field of waste gas recovery and energy-saving devices, and more specifically to a hydrocarbon-containing waste gas recovery and energy-saving device. Background Art

[0002] Waste gas refers to the toxic and harmful gases discharged by humans in the process of production and life. In particular, the waste gas discharged by chemical plants, steel plants, pharmaceutical plants, coking plants and oil refineries has a strong odor, seriously polluting the environment and affecting human health.

[0003] In the current device, the exhaust gas from the degassing bin enters the bag filter. After the exhaust gas is filtered, the entrained dust remains in the bag filter. The clean exhaust gas is sent to the exhaust gas treatment unit RTO for incineration by three exhaust gas fans. A small portion of the exhaust gas is sent to the extrusion unit particle dryer for particle drying.

[0004] The rated power of the exhaust gas fan used is 500kW, and the power is 350kW during normal operation. The wind pressure provided by the degassing fan of this power can meet the needs of sending the exhaust gas to the exhaust gas treatment unit RTO. Running the exhaust gas fan consumes a lot of electric energy. At the same time, three exhaust gas fans are needed to transport the exhaust gas to the exhaust gas treatment unit RTO. The three exhaust gas fans will increase the energy consumption level of the overall device and increase the operating cost of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a hydrocarbon-containing waste gas recovery and energy-saving device in view of the defects of the prior art, so as to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrocarbon-containing waste gas recovery and energy-saving device, comprising an air intake part, a filter part and a treatment part, a flow collecting pipe is connected between the air intake part and the filter part, a flow dividing pipe is connected between the filter part and the treatment part, the air intake part comprises a plurality of waste gas intake pipes, and the plurality of waste gas intake pipes are connected to the flow collecting pipe, the filter part comprises two filter components, the filter component comprises a first air pressure detection butterfly valve and a bag filter, the air intake end of the first air pressure detection butterfly valve is connected to the flow collecting pipe, and the first air pressure detection butterfly valve is connected to the The air inlet end of the bag filter and the air outlet end of the bag filter are connected to the shunt pipe, the processing part includes a second air pressure detection butterfly valve, a first RTO processing unit and an exhaust component, the second air pressure detection butterfly valve is connected to the shunt pipe, the air outlet of the second air pressure detection butterfly valve is connected to the first RTO processing unit, the exhaust component includes a third air pressure detection butterfly valve and a fan, the air inlet end of the third air pressure detection butterfly valve is connected to the shunt pipe, the air outlet end of the third air pressure detection butterfly valve is connected to the fan, and the air outlet end of the fan is connected to the second RTO processing unit.

[0007] As a further improvement of the present technical solution, the bag filter is connected to two rotary valves via pipes, the rotary valves are used to release impurities in the filter bag, and the rotary valve is connected to a dust collection box via pipes, the dust collection box is used to uniformly collect and process impurities filtered by the bag filter.

[0008] As a further improvement of the technical solution, the collection of the exhaust gas is accelerated by using a plurality of the exhaust gas intake pipes, so that the exhaust gas is centrally processed.

[0009] As a further improvement of the present technical solution, the first air pressure detection butterfly valve, the second air pressure detection butterfly valve and the third air pressure detection butterfly valve are used to detect the air pressure in the pipelines on both sides, so that an air pressure difference is formed in the pipelines on both sides, and the relative air pressure difference causes the butterfly valve to open and close automatically.

[0010] As a further improvement of the technical solution, a gas detection device is connected to the diversion pipe, and the gas detection device is used to detect the gas in the pipeline. At the same time, the gas detection device displays the gas composition through data.

[0011] As a further improvement of the present technical solution, the fan is used to extract the gas in the pipeline, so that a vacuum state is formed in the pipeline, and then the gas in the pipeline is continuously flowed.

[0012] As a further improvement of the present technical solution, the first RTO processing unit and the second RTO processing unit are used to burn the gas so that the gas is burned into carbon dioxide and water.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] Through the inlet and outlet pipelines of the fan, a pressure regulating valve is added to the bag filter outlet main pipe, and its opening is adjusted by pressure to prevent the pressure to the exhaust gas treatment unit RTO from being too low. The tail gas generated in the degassing bin uses the wind pressure provided by the degassing fan to directly send the exhaust gas to the exhaust gas treatment unit RTO, thereby greatly reducing the consumption of electric energy, effectively reducing the energy consumption level of the device, and achieving the purpose of reducing the operating cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is described in more detail below by way of example with reference to the accompanying drawings, in which:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Exhaust gas intake pipe; 2. First air pressure detection butterfly valve; 3. Bag filter; 4. Rotary valve; 5. Dust collection box; 6. Second air pressure detection butterfly valve; 7. First RTO processing unit; 8. Gas detection device; 9. Third air pressure detection butterfly valve; 10. Fan; 11. Second RTO processing unit; 12. Focusing pipe; 13. Diverter pipe; 101. Intake section; 102. Filter section; 103. Processing section. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] like Figure 1 As shown, the device includes an air intake part 101, a filter part 102 and a processing part 103, a focusing pipe 12 is connected between the air intake part 101 and the filter part 102, and a diversion pipe 13 is connected between the filter part 102 and the processing part 103. The air intake part 101 includes a plurality of exhaust gas intake pipes 1, and the plurality of exhaust gas intake pipes 1 are connected to the focusing pipe 12. The collection of exhaust gas is accelerated by the plurality of exhaust gas intake pipes 1, which is convenient for the staff to centrally treat the exhaust gas and avoid air pollution. The filter part 102 includes two filter components, and the filter component includes a first air pressure detection butterfly valve 2 and a bag filter 3. The bag filter 3 can filter impurities in the exhaust gas to avoid the presence of unburned substances in the exhaust gas. The first air pressure detection butterfly valve 2 can adjust the air pressure in the pipes on both sides. The air intake end of the first air pressure detection butterfly valve 2 is connected to the focusing pipe 12, and the first air pressure detection butterfly valve 2 is connected to the air intake end of the bag filter 3. 3 is connected to the shunt pipe 13, the processing unit 103 includes a second air pressure detection butterfly valve 6, a first RTO processing unit 7 and an exhaust component, the second air pressure detection butterfly valve 6 is connected to the shunt pipe 13, the air outlet of the second air pressure detection butterfly valve 6 is connected to the first RTO processing unit 7, the exhaust component includes a third air pressure detection butterfly valve 9 and a fan 10, the air inlet end of the third air pressure detection butterfly valve 9 is connected to the shunt pipe 13, the air outlet end of the third air pressure detection butterfly valve 9 is connected to the fan 10, and the air outlet end of the fan 10 is connected to the second RTO processing unit 11. When the air pressure reaches a certain level, the exhaust gas directly enters the first RTO processing unit 7 through the second air pressure detection butterfly valve 6 for combustion. When the air pressure is not enough, the two fans 10 are started to vacuum the pipeline, and the exhaust gas will directly enter the second RTO processing unit 11 through the two third air pressure detection butterfly valves 9 for combustion, and the exhaust gas is burned into carbon dioxide and water and discharged into the atmosphere.

[0021] The bag filter 3 is connected to two rotary valves 4 through pipelines. The rotary valve 4 is used to release impurities in the filter bag. The rotary valve 4 is connected to a dust collection box 5 through pipelines. The dust collection box 5 is used to uniformly collect and process the impurities filtered by the bag filter 3. The impurities in the exhaust gas are filtered by the bag filter 3, and the filtered impurities will remain in the filter bag. When there are too many impurities in the filter bag, open the rotary valve 4, and the impurities in the filter bag enter the dust collection box 5 through the rotary valve 4 for unified processing.

[0022] The first air pressure detection butterfly valve 2, the second air pressure detection butterfly valve 6 and the third air pressure detection butterfly valve 9 are used to detect the air pressure in the pipes on both sides, so that an air pressure difference is formed in the pipes on both sides. The relative air pressure difference makes the butterfly valves open and close automatically, which facilitates the flow of exhaust gas in the pipes on both sides of the first air pressure detection butterfly valve 2, the second air pressure detection butterfly valve 6 and the third air pressure detection butterfly valve 9, and prevents the pressure to the first RTO processing unit 7 and the second RTO processing unit 11 from being too low.

[0023] The shunt pipe 13 is connected to a gas detection device 8, which is used to detect the gas in the pipeline. At the same time, the gas detection device 8 displays the gas composition through data. The gas detection device 8 can detect the composition of the exhaust gas, which is convenient for the treatment of the exhaust gas.

[0024] The fan 10 is used to extract the gas in the pipeline, so that a vacuum state is formed in the pipeline, and then the gas in the pipeline is continuously flowed, so as to achieve the effect of rapid flow of exhaust gas.

[0025] The first RTO processing unit 7 and the second RTO processing unit 11 are used to burn the gas, so that the gas is burned into carbon dioxide and water, thereby achieving the effect of protecting the environment.

[0026] The improvement of this embodiment is that: the three exhaust gas fans in the original EVA device process flow are cancelled, the inlet and outlet pipelines of the exhaust gas fans are connected, and a pressure regulating valve is added to the outlet main pipe of the bag filter 3, and its opening is adjusted by pressure to prevent the pressure to the first RTO processing unit 7 and the second RTO processing unit 11 from being too low. The tail gas generated by the degassing bin uses the wind pressure provided by the degassing fan to directly send the exhaust gas to the first RTO processing unit 7 and the second RTO processing unit 11, which greatly simplifies the process flow;

[0027] In summary, the working principle of this scheme is as follows: first, the exhaust gas enters two first air pressure detection butterfly valves 2 through multiple exhaust gas inlet pipes 1, and the air pressure is adjusted by the first air pressure detection butterfly valve 2. The adjusted exhaust gas enters the bag filter 3, and the impurities in the exhaust gas are filtered by the bag filter 3. The filtered impurities will remain in the filter bag. When there are too many impurities in the filter bag, open the rotary valve 4, and the impurities in the filter bag enter the dust collection box 5 through the rotary valve 4 for unified treatment. The exhaust gas is discharged from the air outlet of the bag filter 3, and a second air filter is provided on the air outlet. At the same time, a gas detection device 8 is arranged in front of the air inlet of the two third air pressure detection butterfly valves 9. The gas detection device 8 can detect the composition of the exhaust gas. When the air pressure reaches a certain level, the exhaust gas directly passes through the second air pressure detection butterfly valve 6 to enter the first RTO processing unit 7 for combustion. When the air pressure is not enough, start the two fans 10 to vacuum the pipeline, and the exhaust gas will pass through the two third air pressure detection butterfly valves 9 to directly enter the second RTO processing unit 11 for combustion, and the exhaust gas will be burned into carbon dioxide and water and discharged into the atmosphere.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydrocarbon-containing waste gas recovery and energy-saving device, comprising an air intake section (101), a filter section (102) and a treatment section (103), wherein a flow collecting pipe (12) is connected between the air intake section (101) and the filter section (102), and a flow dividing pipe (13) is connected between the filter section (102) and the treatment section (103), characterized in that: The air intake section (101) comprises a plurality of exhaust gas intake pipes (1), wherein the plurality of exhaust gas intake pipes (1) are connected to a collecting pipe (12); the filter section (102) comprises two filter assemblies, wherein the filter assemblies comprise a first air pressure detection butterfly valve (2) and a bag filter (3); the air intake end of the first air pressure detection butterfly valve (2) is connected to the collecting pipe (12); the first air pressure detection butterfly valve (2) is connected to the air intake end of the bag filter (3); the air outlet end of the bag filter (3) is connected to the diverter pipe (13); the processing section (103) comprises a second air pressure detection butterfly valve (2); A detection butterfly valve (6), a first RTO processing unit (7) and an air extraction component, wherein the second air pressure detection butterfly valve (6) is connected to the shunt pipe (13), and the air outlet of the second air pressure detection butterfly valve (6) is connected to the first RTO processing unit (7); the air extraction component comprises a third air pressure detection butterfly valve (9) and a fan (10), the air inlet end of the third air pressure detection butterfly valve (9) is connected to the shunt pipe (13), the air outlet end of the third air pressure detection butterfly valve (9) is connected to the fan (10), and the air outlet end of the fan (10) is connected to the second RTO processing unit (11).

2. The hydrocarbon-containing waste gas recovery and energy-saving device according to claim 1 is characterized in that: The bag filter (3) is connected to two rotary valves (4) via pipelines, and the rotary valves (4) are used to release impurities in the filter bag. The rotary valves (4) are connected to a dust collection box (5) via pipelines, and the dust collection box (5) is used to uniformly collect and process impurities filtered by the bag filter (3).

3. The hydrocarbon-containing waste gas recovery and energy-saving device according to claim 2 is characterized in that: The collection of exhaust gas is accelerated by using a plurality of exhaust gas intake pipes (1).

4. The hydrocarbon-containing waste gas recovery and energy-saving device according to claim 3 is characterized in that: The first air pressure detection butterfly valve (2), the second air pressure detection butterfly valve (6) and the third air pressure detection butterfly valve (9) are used to detect the air pressure in the pipelines on both sides, so that an air pressure difference is formed in the pipelines on both sides, and a relative air pressure difference is reached to cause the butterfly valve to open and close automatically.

5. The hydrocarbon-containing waste gas recovery and energy-saving device according to claim 3 is characterized in that: The shunt pipe (13) is connected to a gas detection device (8), and the gas detection device (8) is used to detect the gas in the pipeline. At the same time, the gas detection device (8) displays the gas composition through data.

6. The hydrocarbon-containing waste gas recovery and energy-saving device according to claim 3 is characterized in that: The fan (10) is used to extract the gas in the pipeline, so that a vacuum state is formed in the pipeline.

7. The hydrocarbon-containing waste gas recovery and energy-saving device according to claim 3 is characterized in that: The first RTO processing unit (7) and the second RTO processing unit (11) are used for burning gas.

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