Compression condenser membrane exhaust gas treatment device

Abstract

The utility model provides a compressed condensing membrane waste gas treatment device relates to waste gas treatment technical field, include: integrated type cabinet, the inside bottom of integrated type cabinet is installed with damping support, the inside of damping support is installed with scroll compressor, the output of scroll compressor is installed with oil gas separator, the output of oil gas separator is installed with pressure sensor, and the output of oil gas separator is connected with plate type condenser, the bottom of plate type condenser is installed in the inside bottom of integrated type cabinet. Through gas -liquid separation tank, the three -level pretreatment of dehumidification filter screen and VOCs adsorption column, the humidity of waste gas is reduced from 85% or more to 30% or less, removes residual VOCs simultaneously, and the plugging rate of hollow fiber membrane assembly reduces 90%, greatly reduces the operation and maintenance cost, solves the problem that when high -wet waste gas directly enters membrane assembly, water vapor is easy to condense in the membrane hole, makes the filtration efficiency attenuation fast.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a compressed condenser membrane waste gas treatment device. Background Technology

[0002] Industrial waste gas refers to the total amount of pollutant-containing gases discharged into the air, especially waste gas containing volatile organic compounds (VOCs), generated during fuel combustion and production processes within a factory area. Waste gas treatment requires the use of treatment devices to process it. These devices effectively trap high-concentration VOCs through compression and condensation, and then purify low-concentration residues through membrane filtration. This method is widely used in industries such as chemical, printing, and coating.

[0003] In existing technologies for treating waste gas, a large amount of water vapor remains in the waste gas after compression and condensation. When high-humidity waste gas directly enters the membrane module, the water vapor easily condenses in the membrane pores. At the same time, it carries tiny VOCs droplets that are not completely condensed and adhere to the membrane surface, causing the membrane pores to become clogged and resulting in a rapid decline in filtration efficiency. Utility Model Content

[0004] This utility model relates to a compressed condensation membrane waste gas treatment device to solve the problem that after the waste gas is compressed and condensed, a large amount of water vapor remains in the waste gas. When the high-humidity waste gas directly enters the membrane module, the water vapor easily condenses in the membrane pores and carries incompletely condensed tiny VOCs droplets that adhere to the membrane surface, causing membrane pore blockage and rapid decline in filtration efficiency.

[0005] This utility model provides a compressed condensate membrane exhaust gas treatment device, specifically including: an integrated cabinet, the integrated cabinet having a rectangular structure, with casters installed at the included corners of the bottom edge of the integrated cabinet, and an operation panel installed at the top front of the integrated cabinet; a double-opening detection door installed on the left front side of the integrated cabinet; a shock-absorbing bracket installed on the bottom inner side of the integrated cabinet; a scroll compressor installed inside the shock-absorbing bracket; and a flange installed on the input end of the scroll compressor, the input end of the scroll compressor being fixed by the flange. It is equipped with an air intake pipe; an air intake control valve is installed on the air intake pipe, and the outer side of the air intake pipe runs through the left side of the integrated cabinet; an oil-gas separator is installed on the output end of the scroll compressor; a pressure sensor is installed on the output end of the oil-gas separator, and the output end of the oil-gas separator is connected to a plate condenser; the bottom of the plate condenser is installed on the inner bottom of the integrated cabinet, and the sides of the plate condenser are respectively connected to an outlet water pipe and an inlet water pipe, and a guide pipe is installed on the other side of the plate condenser; a temperature sensor is installed on the guide pipe.

[0006] Furthermore, the inner side of the integrated cabinet is respectively equipped with partition plate one and partition plate two, wherein partition plate one is located below partition plate two; a support plate one is installed on the top of partition plate one; a gas-liquid separator is installed on the support plate one; and a dehumidifying filter and a VOCs adsorption column are distributed from top to bottom on the inner side of the gas-liquid separator.

[0007] Furthermore, the side end of the guide pipe passes through the partition plate and is connected to the top side of the gas-liquid separator; a drain valve is installed at the bottom of the gas-liquid separator; an output pipe is installed at the top of the drain valve; and a recycling bin is installed at the bottom right side of the integrated cabinet.

[0008] Furthermore, the side end of the output pipe passes through the right side of the integrated cabinet and connects to the recycling bin. The recycling bin contains a VOCs degradation module, a level gauge, and a drain pipe. The side of the recycling bin is equipped with a conveying pipe. The inner end of the conveying pipe is connected to the VOCs adsorption column.

[0009] Furthermore, a support plate is installed on the top of the second partition plate; a membrane shell is installed on the top of the second support plate; quick connectors are installed at both ends of the membrane shell, and a hollow fiber membrane assembly is installed between the two quick connectors; the outer end of the conveying pipe passes through the second partition plate and is connected to the membrane shell.

[0010] Furthermore, an exhaust pipe is installed on the membrane housing; the inner end of the exhaust pipe is installed on the hollow fiber membrane module, a differential pressure sensor is installed on the inner side of the exhaust pipe, and a VOCs concentration detector is installed on the outer side of the exhaust pipe.

[0011] Furthermore, a backwash pump is installed on the right side of the integrated cabinet; two backwash pipelines are installed on the output end of the top of the backwash pump; a solenoid valve is installed on each of the two backwash pipelines, and the side ends of the two backwash pipelines are respectively connected to two quick connectors.

[0012] This utility model provides a compressed condensate membrane waste gas treatment device, which has the following beneficial effects: When in use, this utility model uses a three-stage pretreatment process involving a gas-liquid separator, a dehumidifying filter, and a VOCs adsorption column to reduce the humidity of exhaust gas from over 85% to below 30%, while removing residual VOCs. This reduces the clogging rate of the hollow fiber membrane module by 90%, extends the cleaning cycle from 1-2 days in the prior art to 15-20 days, and extends the service life from 6 months to 18 months, significantly reducing operation and maintenance costs.

[0013] The design incorporates a condensate recovery tank and a VOCs degradation module to reduce the VOCs concentration in the condensate from 50-100 mg / L to below 5 mg / L, meeting the integrated wastewater discharge standard and completely solving the pollution problem caused by the direct discharge of condensate under existing technologies.

[0014] Hollow fiber membrane modules and membrane shells are connected by plug-in quick connectors, reducing replacement time from 2-3 hours in the existing technology to less than 15 minutes, reducing annual downtime by 90%, ensuring production continuity. Through the linkage of multiple sensors and controllers, parameters can be monitored in real time, automatically adjusted and fault alarms can be achieved, eliminating the need for manual inspections, reducing the number of maintenance personnel by 1-2 people per shift, and reducing annual maintenance costs by 30%. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this utility model is shown; Figure 2 A cross-sectional view of the integrated cabinet structure of this utility model is shown; Figure 3 A three-dimensional structural schematic diagram of the oil-gas separator of this utility model is shown; Figure 4 A three-dimensional structural diagram of the output tube of this utility model is shown; Figure 5 A cross-sectional view of the backwashing pipeline of this utility model is shown; Figure 6 A schematic cross-sectional view of the membrane shell structure of this utility model is shown.

[0018] List of reference numerals 1. Integrated cabinet; 101. Vibration damping bracket; 102. Scroll compressor; 103. Inlet pipe; 104. Inlet control valve; 105. Oil-gas separator; 106. Plate condenser; 107. Water outlet pipe; 108. Water inlet pipe; 109. Drainage pipe; 2. Divider plate 1; 201. Support plate 1; 202. Gas-liquid separator; 203. Dehumidifier filter; 204. VOCs adsorption column; 205. Drain valve; 206. Output pipe; 207. Recovery box; 208. Conveying pipe; 3. Partition plate 2; 301. Support plate 2; 302. Membrane shell; 303. Quick connector; 304. Hollow fiber membrane module; 305. Exhaust stack; 306. Backwash pump; 307. Backwash pipeline. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please refer to Figures 1 to 6 : Example 1: This utility model proposes a compressed condenser membrane exhaust gas treatment device, including: an integrated cabinet 1, which is rectangular in structure, with casters installed at the corners of its bottom edges, an operation panel installed at the top front of the integrated cabinet 1, and a double-opening detection door installed on the left front side of the integrated cabinet 1; a shock-absorbing bracket 101 is installed at the bottom inner side of the integrated cabinet 1; a scroll compressor 102 is installed inside the shock-absorbing bracket 101; a flange is installed on the input end of the scroll compressor 102, and an air inlet pipe 103 is fixedly installed on the input end of the scroll compressor 102 through the flange; the air inlet... An intake control valve 104 is installed on the pipe 103, and the outer side of the intake pipe 103 passes through the left side of the integrated cabinet 1; an oil-gas separator 105 is installed on the output end of the scroll compressor 102; a pressure sensor is installed on the output end of the oil-gas separator 105, and the output end of the oil-gas separator 105 is connected to a plate condenser 106; the bottom of the plate condenser 106 is installed on the inner bottom of the integrated cabinet 1, and the sides of the plate condenser 106 are respectively connected to an outlet pipe 107 and an inlet pipe 108, and a guide pipe 109 is installed on the other side of the plate condenser 106; a temperature sensor is installed on the guide pipe 109.

[0021] In this embodiment, when treating exhaust gas, parameters can be set via the operation panel on the front side of the integrated cabinet 1. For example, the compression pressure of the scroll compressor 102 can be set to 0.6 MPa, and the condensation temperature of the plate condenser 106 to 5°C. Simultaneously, the intake control valve 104, pressure sensor, temperature sensor, and drain valve 205 can be controlled or monitored. After opening the intake control valve 104, industrial exhaust gas enters the interior of the scroll compressor 102 through the intake pipe 103, causing the exhaust gas pressure to rise to 0.6 MPa, thereby reducing the saturated vapor pressure of VOCs and making it easier to condense. The shock-absorbing bracket 101 can reduce the pressure of the scroll compressor 102. 2. Noise caused by vibration: The exhaust gas enters the oil-gas separator 105 for oil-gas separation. After removing the oil mist, it enters the plate condenser 106. The side of the plate condenser 106 is connected to an external chiller through the inlet pipe 108 and the outlet pipe 107. The chilled water enters the plate condenser 106 and circulates to cool the exhaust gas, causing the high concentration of VOCs to condense into liquid. The resulting gas-liquid mixture is transported to the gas-liquid separator 202 through the guide pipe 109. The temperature sensor monitors the temperature of the condensed exhaust gas in real time. If it is lower than 5°C, the cooling water flow is reduced to avoid excessive condensation and freezing of the pipes.

[0022] In Example 2, based on Example 1, a partition plate 2 and a partition plate 3 are respectively installed on the inner side of the integrated cabinet 1, wherein the partition plate 2 is located below the partition plate 3; a support plate 201 is installed on the top of the partition plate 2; a gas-liquid separator 202 is installed on the support plate 201; a dehumidifying filter 203 and a VOCs adsorption column 204 are distributed from top to bottom on the inner side of the gas-liquid separator 202; the side end of the guide pipe 109 penetrates the partition plate 2 and... The gas-liquid separator 202 is connected to the top of its side; a drain valve 205 is installed at the bottom of the gas-liquid separator 202; an output pipe 206 is installed at the top of the drain valve 205; a recycling bin 207 is installed at the bottom right side of the integrated cabinet 1; the side end of the output pipe 206 passes through the right side of the integrated cabinet 1 and connects to the recycling bin 207. The recycling bin 207 contains a VOCs degradation module, and a level gauge is installed on its side. A drain pipe is installed at the bottom; a conveying pipe 208 is installed on the side of the gas-liquid separator 202; the inner end of the conveying pipe 208 is connected to the VOCs adsorption column 204. When treating the waste gas, the condensed gas-liquid mixture enters the interior of the gas-liquid separator 202. The support plate 201 on the partition plate 2 positions the gas-liquid separator 202. The liquid VOCs entering the gas-liquid separator 202 are deposited at the bottom of the tank under the action of gravity through the dehumidification filter 203 and the VOCs adsorption column 204. They are discharged into the interior of the recovery tank 207 through the drain valve 205 and the output pipe 206. The VOCs degradation module inside the recovery tank 207 treats the waste gas to meet the standards and then discharges it. The waste gas passes through the dehumidification filter 203 to remove water vapor, reducing the humidity of the waste gas to below 30% to avoid condensation and blockage of the membrane pores. The waste gas then passes through the VOCs adsorption column 204 to adsorb residual VOCs. The waste gas enters the interior of the membrane shell 302 through the conveying pipe 208 for treatment.

[0023] In Example 3, based on Example 1, a support plate 301 is installed on the top of the partition plate 2 3; a membrane housing 302 is installed on the top of the support plate 2 301; quick connectors 303 are installed at both ends of the membrane housing 302, and a hollow fiber membrane module 304 is installed between the two quick connectors 303; the outer end of the delivery pipe 208 passes through the partition plate 2 3 and connects to the membrane housing 302; an exhaust pipe 305 is installed on the membrane housing 302; the inner end of the exhaust pipe 305 is installed on the hollow fiber membrane module 304, a differential pressure sensor is installed on the inner side of the exhaust pipe 305, and a VOCs concentration detector is installed on the outer side of the exhaust pipe 305; a backwash pump 306 is installed on the right side of the integrated cabinet 1; two backwash pipes 307 are installed on the output end of the top of the backwash pump 306; a solenoid valve is installed on both backwash pipes 307, and the side ends of the two backwash pipes 307 are respectively connected to two The quick connector 303 is connected to the membrane housing 302. When treating the waste gas, the waste gas enters the interior of the membrane housing 302. The support plate 301 on the partition plate 3 ensures the stability of the membrane housing 302. After treatment, the clean gas in the waste gas flows through the hollow fiber membrane module 304 and then collects to the exhaust stack 305 for discharge. The concentration detector on the exhaust stack 305 monitors the emission concentration in real time. If it is ≤30mg / m³, it is discharged normally. If it exceeds the standard, the compression pressure is automatically increased. After the backwash pump 306 is turned on, the solenoid valve on the backwash pipeline 307 is opened. The backwash liquid enters the hollow fiber membrane module 304 from the backwash pipeline 307 through the quick connector 303 for flushing. After flushing away the blockage, it enters the gas-liquid separator 202 through the delivery pipe 208 and enters the recovery box 207 through the output pipe 206 for treatment, ensuring that the membrane housing 302 filters the waste gas efficiently.

[0024] The working principle of this embodiment is as follows: Industrial waste gas enters the scroll compressor 102 through the inlet pipe 103, causing the waste gas pressure to rise to 0.6 MPa. The waste gas then enters the oil-gas separator 105 for oil-gas separation. After removing oil mist, it enters the plate condenser 106. Cold water circulates inside the plate condenser 106 to cool the waste gas, causing high-concentration VOCs to condense into a liquid state. The resulting gas-liquid mixture is transported to the gas-liquid separator 202 through the guide pipe 109. The liquid VOCs entering the gas-liquid separator 202... Under the influence of gravity, the waste gas passes through the dehumidifying filter 203 and the VOCs adsorption column 204 and is deposited at the bottom of the tank. It is then discharged into the recovery box 207 through the output pipe 206. The waste gas passes through the dehumidifying filter 203 to remove water vapor, and then passes through the VOCs adsorption column 204 to adsorb residual VOCs. The waste gas enters the membrane housing 302 for treatment through the conveying pipe 208. The clean gas in the treated waste gas flows through the hollow fiber membrane module 304 and then gathers to the exhaust stack 305 for discharge. The concentration detector on the exhaust stack 305 monitors the emission concentration in real time. If it is ≤30mg / m³, it is discharged normally.

[0025] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0026] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A compressed condensate membrane waste gas treatment device, comprising: An integrated cabinet (1) is provided with casters at the corner of its bottom edge and an operation panel at the top front of the integrated cabinet (1). A double-leaf inspection door is provided on the left front side of the integrated cabinet (1). A shock-absorbing bracket (101) is provided on the bottom inner side of the integrated cabinet (1). The integrated cabinet (1) is characterized in that a scroll compressor (102) is provided on the inner side of the shock-absorbing bracket (101). A flange is provided on the input end of the scroll compressor (102), and an air intake pipe (103) is fixedly installed on the input end of the scroll compressor (102) through the flange. An air intake control valve (104) is provided on the air intake pipe (103). The outer side of the air intake pipe (103) passes through the left side of the integrated cabinet (1); an oil-gas separator (105) is installed on the output end of the scroll compressor (102); a pressure sensor is installed on the output end of the oil-gas separator (105), and a plate condenser (106) is connected to the output end of the oil-gas separator (105); the bottom of the plate condenser (106) is installed on the inner bottom of the integrated cabinet (1), and the sides of the plate condenser (106) are respectively connected to the water outlet pipe (107) and the water inlet pipe (108), and a guide pipe (109) is installed on the other side of the plate condenser (106); a temperature sensor is installed on the guide pipe (109).

2. The compressed condensate membrane waste gas treatment device according to claim 1, characterized in that, The inner side of the integrated cabinet (1) is respectively equipped with partition plate one (2) and partition plate two (3), wherein partition plate one (2) is located below partition plate two (3); a support plate one (201) is installed on the top of partition plate one (2); a gas-liquid separator (202) is installed on the support plate one (201); a dehumidifying filter (203) and a VOCs adsorption column (204) are distributed from top to bottom on the inner side of the gas-liquid separator (202).

3. The compressed condensate membrane waste gas treatment device according to claim 2, characterized in that, The side end of the guide pipe (109) passes through the partition plate (2) and is connected to the top side of the gas-liquid separator (202); a drain valve (205) is installed at the bottom of the gas-liquid separator (202); an output pipe (206) is installed at the top of the drain valve (205); a recycling bin (207) is installed at the bottom right side of the integrated cabinet (1).

4. The compressed condensate membrane waste gas treatment device according to claim 3, characterized in that, The side end of the output pipe (206) passes through the right side of the integrated cabinet (1) and is connected to the recycling box (207). The recycling box (207) is equipped with a VOCs degradation module, a liquid level gauge is installed on the side of the recycling box (207), and a drain pipe is installed at the bottom of the side of the recycling box (207). The side of the gas-liquid separator (202) is equipped with a conveying pipe (208). The inner end of the conveying pipe (208) is connected to the VOCs adsorption column (204).

5. The compressed condensate membrane waste gas treatment device according to claim 4, characterized in that, The top of the second partition plate (3) is equipped with a second support plate (301); the top of the second support plate (301) is equipped with a membrane shell (302); quick connectors (303) are installed at both ends of the membrane shell (302), and a hollow fiber membrane module (304) is installed between the two quick connectors (303); the outer end of the conveying pipe (208) passes through the second partition plate (3) and is connected to the membrane shell (302).

6. The compressed condensate membrane waste gas treatment device according to claim 5, characterized in that, An exhaust pipe (305) is installed on the membrane housing (302); the inner end of the exhaust pipe (305) is installed on the hollow fiber membrane module (304), a differential pressure sensor is installed on the inner side of the exhaust pipe (305), and a VOCs concentration detector is installed on the outer side of the exhaust pipe (305).

7. The compressed condensate membrane waste gas treatment device according to claim 6, characterized in that, A backwash pump (306) is installed on the right side of the integrated cabinet (1); two backwash pipes (307) are installed on the output end of the backwash pump (306); a solenoid valve is installed on both backwash pipes (307), and the side ends of the two backwash pipes (307) are connected to two quick connectors (303) respectively.

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