CN114768455A - Dust removal, defogging and composite adsorption material system testing method - Google Patents

Abstract

The invention relates to a test method of a dust removal, defogging and composite adsorption material system, which comprises the steps of collecting volatile organic compounds containing fog drops (moisture) by a fog drop waste gas collecting pipe, collecting dust by a dust waste gas collecting hood and a dust waste gas collecting pipe, connecting the fog drop waste gas collecting pipe and the dust waste gas collecting pipe through the gas collecting pipe, preprocessing the collected dust-containing fog drop waste gas by a negative pressure type dust remover and a primary demister and a secondary demister with spraying, sending the volatile organic compounds subjected to dust removal and defogging into a composite adsorption material device by a fan through a dust removal and defogging gas inlet pipe to perform chemical balance purification treatment of the composite adsorption material, and then discharging the volatile organic compounds through a waste gas purification exhaust pipe; and the dust and fog drop tester is used for respectively testing the particle size and concentration of dust-containing fog drop waste gas and the purification capacity of each device of the dust-removing and fog-removing waste gas and the composite adsorption material.

Description

Test methods for dust and mist removal and composite adsorbent material systems

technical field

The invention relates to a system testing method for dust removal and demisting of waste gas purification equipment and composite adsorption materials in the field of environmental protection, in particular to the removal of dust by a high-efficiency pretreatment device and system for dust-containing mist and droplet exhaust gas Droplet concentration and testing and evaluation methods, its purpose is to improve the purification technology of exhaust gas and improve the adsorption effect and service life of composite materials.

Background technique

In the field of environmental protection, the combination of exhaust gas purification devices and systems plays a key role in linking the past and future of exhaust gas pretreatment devices. Test and evaluation methods such as critical flow rate, pressure loss and contact time of each station of the device and treatment process have a crucial aspect, and are used to improve and purify the structure and material application technology and method of exhaust gas, and can be applied with high efficiency and low cost. to meet the needs of the environmental protection market.

SUMMARY OF THE INVENTION

The present invention solves the above-mentioned technical problems through a series of technical features.

The test method for dust removal and fog removal and composite adsorption material system is characterized in that: a sewage tank, a mist drop exhaust gas collecting pipe, a dust exhaust gas collecting hood, a dust exhaust gas collecting pipe, a gas collecting pipe, a negative pressure type dust collector, a Air pipe, with spray primary demister, secondary demister, fan, dust removal and defogging intake pipe, composite adsorption material device, exhaust gas purification exhaust pipe, bypass exhaust pipe, regulating damper, test hole, It is composed of dust particle size and concentration test hole.

The test method for dust removal and demisting and composite adsorption material system is characterized in that: a sewage pipe is arranged in the sewage tank and a cover plate is arranged on the upper part of the sewage tank, and a mist exhaust gas collecting pipe is arranged on the upper part of the cover plate for collecting sewage The tank flows into the waste gas containing mist (moisture) volatile organic compounds emitted during the sewage treatment process; the conical surface suction port of the dust exhaust gas collecting hood is set on the dust accumulation worktable, and the height H from the collected dust is Between 500mm and 800mm, a dust and exhaust gas collection pipe is arranged on the top of the dust and exhaust gas collecting hood on the conical surface, and the gas flow rate at the suction port of the conical surface of the dust and exhaust gas collecting hood shall not be less than 0.3m/s; The mist exhaust gas collection pipe and the dust exhaust gas collection pipe are respectively provided with regulating dampers, which are connected with the gas collection pipes, and the gas collection pipes are respectively connected with two sets of negative pressure dust collector intake pipes, dampers a, mist drop exhaust gas bypass pipes, The damper b and the bypass exhaust pipe are connected to each other.

The test method for dust removal and fog removal and composite adsorption material system is characterized in that: two sets of negative pressure dust collector air intake pipes are respectively provided with adjustment dampers, and flushing nozzles and sprays for dust in the dust collector cylinder. The water pipe is connected with the spray regulating water valve; the outlet of the two sets of negative pressure dust collectors is provided with a regulating air valve and the exhaust pipe is connected, and the exhaust pipe is connected with the droplet waste gas bypass pipe, the air valve c, and the exhaust pipe. The inlet and outlet ends of the spray primary demister and the secondary demister are connected to the inlet end of the fan; the outlet end of the fan is provided with a dust removal and demisting intake pipe, a bypass exhaust pipe a, a damper d and a damper e are connected with each other; the dust-removing and mist-removing air intake pipe is provided with a regulating damper and is connected with the inlet end of the composite adsorption material device.

The method for testing dust removal and fog removal and composite adsorption material system is characterized in that: the composite adsorption material device is provided with an activated carbon adsorption material made of improvement and modification, filled with an acid adsorption material box, a neutral adsorption material The material box and the alkaline adsorption material box are three-layered, which are called composite adsorption materials. There is also a manual hoist for hoisting and filling the inlet and outlet of the composite adsorption material box; the lower inlet end of the acid adsorption material box is equipped with dust removal and fog removal. The air intake pipe and the adjusting air valve are provided with the exhaust gas purification exhaust pipe and the adjusting air valve at the upper outlet end of the alkaline adsorption material box. The mist intake pipe and the bypass exhaust pipe a, the bypass exhaust pipe a and the bypass exhaust pipe and the exhaust gas purification exhaust pipe are connected to each other to form a set of dust removal and fog removal and composite adsorption material system.

The test method for dust removal and demisting and composite adsorption material system is characterized in that: a three-phase separator is arranged at the lower part of the two sets of negative pressure type dust collectors for gas-solid-liquid separation in the waste gas containing dust mist droplets; three There is a solid-liquid separation filter screen inside the phase separator, and a drain valve and a dust discharge pipe are also arranged at the lower part of the three-phase separator for separate discharge of liquid and solid matter; two sets of negative pressure dust collectors are separated from the three-phase separator. As a whole device, the demister is installed on the upper left part of the dust collecting tank; the inlet of the first-level demister with spray is provided with a spray regulating water valve for connecting the mist eliminator, the nozzle for demisting and the spray water pipe; The primary demister with spray is equipped with a primary demister filter module and drain valve for drainage, as well as the primary demister drain pipe and bracket; the secondary demister is provided with a secondary demister filter module and drainage The drain valve and the secondary demister drain pipe and the secondary demister bracket are used; the primary demister with spray is arranged on the right side of the upper part of the dust collecting tank, and the primary demister drain pipe is provided with a The convex part with more than 2 times the pipe diameter is used for water sealing. One end of the drain port of the primary demister drain pipe is connected to the water inlet at the top of the dust collecting tank, and the secondary demister relies on the secondary demister bracket. It is set separately on the ground and fixed with fasteners. The drain pipe of the secondary mist eliminator is provided with a convex part with a diameter of more than 2 times for water sealing. Drain bucket.

The test method for dust removal and fog removal and composite adsorption material system is characterized in that: test holes are provided on the mist drop exhaust gas collection pipe, the gas collector pipe, the exhaust pipe, the dust removal and mist removal air intake pipe, and the exhaust gas purification exhaust pipe, There are dust particle size and concentration test holes on the dust exhaust gas collection pipe, the intake pipe of the negative pressure type dust collector and the dust removal pipe of the negative pressure type dust collector; the diameter of the test hole is DN80, and a DN40 with flange is connected through the flange For reducing joints, the distance from the center of the pipeline to be tested to the flange surface of the reducing joint shall be set at a minimum of 360mm; the diameter of the dust particle size and concentration test hole is DN80, and its length is from the center of the pipeline to be tested to the test hole. The minimum distance between the flange surfaces of the holes is set to be no less than 180mm; the distance set by the test holes on the droplet exhaust gas collection pipe, the dust exhaust gas collection pipe, the gas collection pipe, the dust removal and defogging intake pipe, and the exhaust gas purification exhaust pipe shall be the same as the distance between the test holes. The distances M and N between the flange faces of the inlet and exhaust ends with the spray primary demister and secondary demister and the center of the test hole are set to 6 times and above, 3 times and A set of test methods for dust removal and demisting and exhaust gas purification system capabilities are combined after more than 3 times the diameter of the pipe diameter.

The test method for dust removal and fog removal and composite adsorption material system is characterized in that: the dust collecting water tank is used as auxiliary equipment for drainage during the test process of the dust collecting and fog removal system, and a middle partition plate is arranged in the middle of the dust collecting water tank and is divided into two parts. For the water tank, there is a V-shaped opening at the center of the partition plate 50mm below the water level; there are water tank drain pipes a, water tank drain pipes b and drain valves at different positions at the bottom of the dust collection tank, above the water level in the dust collection tank Equipped with a water tank inlet pipe and water inlet valve; the water tank drain pipe a and the water tank drain pipe b are connected to each other with pipes, and an external drain pump and drain pipe can be combined to form a drainage system; when the negative pressure dust collector and the three-phase separator and The mist eliminator, the sewage after the gas-solid-liquid separation of volatile organic compounds containing dust mist droplets is carried out into the dust collection tank, and the sewage is discharged through the drainage system after reaching the standard treatment.

The test method of the present invention is simple and reasonable, and the test process method 1 is: the described dust removal and demisting and composite adsorption material system test method, the collection of volatile organic compounds containing mist droplets (moisture) with a mist exhaust gas collection pipe, Use the dust exhaust gas collecting hood and the dust exhaust gas collection pipe to collect the dust, connect the mist drop exhaust gas collection pipe and the dust exhaust gas collection pipe through the gas collection pipe, and pass the collected dust-containing mist droplet exhaust gas through the negative pressure dust collector and with the spray. The first-level mist eliminator and the second-level mist eliminator are used for pretreatment, and the fan sends the volatile organic compounds from dust removal and mist removal into the composite adsorption material device through the dust removal and demisting air intake pipe for chemical equilibrium purification treatment of the composite adsorption material, and flows through the exhaust gas. The purification exhaust pipe is discharged to the outside; the test holes set on the mist exhaust gas collection pipe, the dust exhaust gas collection pipe, the gas collecting pipe, the exhaust pipe, the dust removal and defogging intake pipe, the exhaust gas purification exhaust pipe and the bypass exhaust pipe, Use a dust and droplet tester to test the particle size and concentration of dust-containing droplet exhaust gas and the purification capacity of each device for dust-removing and mist-removing exhaust gas and composite adsorption materials.

The test method of the present invention is simple and reasonable, and the test process method 2 is: the method for testing the dust removal and demisting and composite adsorption material system, and the method for testing the particle size and concentration of the exhaust gas containing mist droplets separately is: firstly, close the dust exhaust gas collection Adjust the damper set on the inlet pipe of the negative pressure type dust collector and the dust removal pipe of the negative pressure type dust collector, open the damper a on the collecting pipe and the damper c set on the droplet waste gas bypass pipe, and close the damper b on the gas collecting pipe , when the droplet waste gas collection pipe collects the volatile organic compounds containing droplets (moisture) emitted during the treatment of the sewage tank, it flows into the exhaust pipe through the gas collection pipe and the droplet waste gas collection pipe and passes through the first-level demisting with spraying. It is then sent to the composite adsorption material device through the suction and pressure of the fan and the dust removal and demisting air intake pipe for processing and the test instrument is used to measure the volatility of the inflowing droplets (moisture) in the test hole. Outlet testing of organics and system purification yields the removal of droplet size and concentration and the efficiency of exhaust gas purification.

The test method of the present invention is simple and reasonable, and the test process method 3 is: the method for testing the dust removal and demisting and composite adsorption material system, adopts the method of separately testing the particle size and concentration of the dust. The damper a and the damper b on the set regulating damper and the air collecting pipe and the damper c on the droplet waste gas bypass pipe are also closed, and the damper e set on the droplet waste gas bypass pipe a, the dust removal and defogging intake pipe and the waste gas purification Adjusting air valve set on the exhaust pipe; opening the dust exhaust gas collecting hood to connect the adjusting air door set on the dust exhaust gas collecting pipe, the adjusting air door on the inlet pipe of the negative pressure type dust collector and the dust removal pipe of the negative pressure type dust collector, and the mist exhaust gas The air valve d set on the bypass pipe a; when the dust exhaust gas collecting hood is connected to the dust exhaust gas collecting pipe to collect the dust, it flows into the two sets of negative pressure dust collectors through the gas collecting pipe for dust removal treatment, and then passes through the exhaust pipe through the With the spray primary demister and secondary demister, the suction and pressure of the fan are sent to the dust removal and demisting intake pipe, the droplet exhaust gas bypass pipe a and the bypass exhaust pipe during the discharge process, using a test instrument In the dust particle size and concentration test hole and the test hole to test the inflowing dust after treatment and purification, the removal of dust particle size and concentration and the efficiency of exhaust gas purification can be obtained.

Description of drawings

Fig. 1 is the elevation view of the device of the present invention implemented;

Fig. 2 is a plan view in Fig. 1;

Description of the marks in the figure

In Figure 1:

1- Test method for dust removal and defogging and composite adsorption material system, 2- sewage tank, 3- mist drop exhaust gas collection pipe, 4- regulating damper, 5- test hole, 6- dust, 7- dust exhaust gas collecting hood, 8 -Dust exhaust gas collection pipe, 9- Dust particle size and concentration test hole, 10-Gas collection pipe, 11-Negative pressure type dust collector, 12-Negative pressure type dust collector intake pipe, 12a-Nozzle for flushing and spray water pipe, 13- -Dedusting pipe of negative pressure dust collector, 14-exhaust pipe, 15-with spray first-level mist eliminator, 15a-first-level mist eliminator demisting filter module, 15b-nozzle and spray water pipe for demisting, 15c- Primary demister drain pipe, 16- Secondary demister, 16a- Secondary demister demister filter module, 16b- Secondary demister drain, 16c- Secondary demister bracket, 16d -Drain bucket, 17-Fan, 18-Dust and defogging intake pipe, 19-Composite adsorption material device, 19a-Acid adsorption material box, 19b-Neutral adsorption material box, 19c-Alkaline adsorption material box, 19d-Composite adsorption Materials Lifting hoist, 20-exhaust gas purification exhaust pipe, 21-air valve a, 22-mist drop exhaust gas bypass pipe, 23-air valve b, 24-bypass exhaust pipe, 25-three-phase separator, 25a-solid-liquid Separation screen, 25b-dust pipe, 25c-separator drain and drain valve, 26-dust collection tank, 26a-sink drain a, 26b-sink drain b, 26c-sink inlet pipe, 27- damper c , 31 - bypass exhaust pipe a, 32 - damper d, 33 - damper e.

In Figure 2:

1- Test method for dust removal and demisting and composite adsorption material system, 2- Sewage tank, 3- Mist exhaust gas collection pipe, 4- Adjusting damper, 5- Test hole, 7- Dust exhaust gas collecting hood, 8- Dust exhaust gas collection Pipe, 9-Particle size and dust concentration test hole, 10-Gas collection pipe, 11-Negative pressure type dust collector, 12-Negative pressure type dust collector inlet pipe, 12a-Nozzle and spray water pipe for flushing, 13-Negative pressure type Dust collector exhaust pipe, 14-exhaust pipe, 15-first-stage mist eliminator with spray, 15a-first-stage demisting filter module, 15b-nozzle and spray water pipe for demisting, 15c-first-stage demisting 16-secondary demister, 16a-secondary demister filter module, 16b-secondary demister drain, 16c-secondary demister bracket, 17-fan, 18-dust and defogger inlet Trachea, 19-composite adsorption material device, 19a-acid composite adsorption material, 19b-neutral composite adsorption material, 19c-alkaline composite adsorption material, 19d-manual hoist, 20-exhaust gas purification exhaust pipe, 21-air valve a, 22- Bypass mist exhaust pipe, 23- Damper b, 24- Bypass exhaust pipe, 25- Three-phase separator, 25a- Solid-liquid separation filter, 26- Dust collection tank, 26a- Water tank drain pipe, 26b -Sink drain pipe b, 26c-Sink inlet pipe, 27- Damper c, 31-Bypass exhaust pipe a, 32- Damper d, 33- Damper e.

Detailed ways

The technical features of the present invention will be further described below with reference to the embodiments and the accompanying drawings.

According to Fig. 1 and Fig. 2, the test method 1 for dust removal and demisting and composite adsorption material system consists of a sewage tank 2, a mist drop exhaust gas collecting pipe 3, a dust exhaust gas collecting hood 7, a dust exhaust gas collecting pipe 8, Collecting pipe 10, negative pressure dust collector 11, exhaust pipe 14, with spray primary demister 15, secondary demister 16, fan 17, dust removal and defogging intake pipe 18, bypass exhaust pipe 24 , composite adsorption material device 19, exhaust gas purification exhaust pipe 20, regulating damper 4, test hole 5, particle size and dust concentration test hole 9; There is a cover plate, and the mist exhaust gas collection pipe 3 arranged on the upper part of the cover plate is used to collect the exhaust gas containing mist (moisture) volatile organic compounds emitted during the inflow of the sewage tank 2 into the sewage treatment process; the dust exhaust gas collecting hood 7 The conical surface suction port is arranged on the dust 6 on the accumulation table, and the height H from the dust collection 6 is between 500 and 800 mm, and a dust and exhaust gas collection pipe is arranged on the top of the dust and exhaust gas collecting hood 7 on the conical surface. 8. Set the gas flow rate of the conical surface suction port of the dust exhaust gas collecting hood 7 to be not less than 0.3m/s; the mist exhaust gas collecting pipe 3 and the dust exhaust gas collecting pipe 8 are respectively provided with regulating dampers 4 and are connected with the gas collecting pipe. 10 are connected to each other, and the gas collecting pipe 10 is connected with two groups of negative pressure dust collector intake pipes 11, air valve a21, mist drop exhaust gas bypass pipe 22, air valve b23, and bypass exhaust pipe 24 respectively; two groups of negative pressure The air intake pipe 12 of the type dust collector is respectively provided with a regulating air valve 4 and a nozzle for washing the dust in the cylinder of the negative pressure type dust collector 11, and the spray water pipe 12a is connected with the spray regulating water valve; two sets of negative pressure type dust collectors are connected. The outlet of the dust removal pipe 13 is provided with a regulating air valve 4 which is connected with the exhaust pipe 14, and the exhaust pipe 14 is connected with the droplet waste gas bypass pipe 22, the air valve c27, with the spray primary demister 15, and the secondary demister 15. The inlet end of the mister 16 is connected with the outlet end and the inlet end of the fan 17; the outlet end of the fan 17 is provided with a dust-removing and mist-removing air intake pipe 18 and the bypass exhaust pipe a31 and the damper d32 and the damper e33 for interconnection; The dust-removing and mist-removing air intake pipe 18 is provided with a regulating damper 4 which is connected to the inlet end of the composite adsorption material device 19; the composite adsorption material device 19 is provided with an improved and modified activated carbon adsorption material, which is filled with acid adsorption materials. The material box 19a, the neutral adsorption material box 19b, and the alkaline adsorption material box 19c are three-layered, which are called composite adsorption materials, and are also provided with a manual hoist 19d for hoisting the inlet and outlet of the composite adsorption material box; The lower inlet end of the box 19a is provided with a dust-removing and mist-removing air intake pipe 18 and an adjusting damper 4, and an exhaust gas purifying exhaust pipe 20 and an adjusting air valve 4 are provided at the upper outlet end of the alkaline adsorbent material box 19c, and the dust-removing and mist-removing air intake pipe 18 is connected to the exhaust gas. The regulating dampers 4 of the purifying exhaust pipe 20 are connected to each other; the outlet end of the fan 17 is connected to the dust-removing and mist-removing intake pipe 18 and the bypass exhaust pipe a31, and the bypass exhaust pipe a31 and the bypass exhaust pipe 24 are connected to the exhaust gas purification exhaust pipe. The trachea 24 are interconnected to form a set of dust removal and demisting and complexing. Combined adsorption material system.

According to Figures 1 and 2, the test method 1 for the dust removal and demisting and composite adsorption material system, a three-phase separator 25 is provided at the lower part of the two sets of negative pressure type dust collectors 11 for the exhaust gas containing dust and mist droplets. Gas-solid-liquid separation in the three-phase separator 25; a solid-liquid separation filter screen 25a is arranged inside the three-phase separator 25, and a drain valve 25c and a dust discharge pipe 25b are also provided at the lower part of the three-phase separator 25 for the separate separation of liquid and solid matter. Discharge; two sets of negative pressure dust collectors 11 and three-phase separators 25 are arranged as a whole device on the upper left side of the dust collecting tank 26; the inlet of the first-level mist eliminator 15 with spray is provided with a mist eliminator for The inner and outer demisting nozzles are connected with the spray water pipe 15b to the spray regulating water valve; the first-level mist eliminator with spraying 15 is provided with a first-level mist removal filter module 15a, a drainage valve for drainage and a first-level mist eliminator for drainage. Pipe 15c and bracket; the secondary demister 16 is provided with a secondary demister filter module 16a, a drainage valve for drainage, a secondary demister drain pipe 16b and a secondary demister bracket 16c; The first-stage mist eliminator 15 is arranged on the right side of the upper part of the dust collecting water tank 26, the first-stage mist eliminator drain pipe 16b is provided with a convex part larger than 2 times the pipe diameter for water sealing, and the first-stage mist eliminator drain pipe 15c One end of the water outlet is connected with the water inlet at the top of the dust collecting tank 26, and the secondary mist eliminator 16 is independently set on the ground by means of the secondary mist eliminator bracket 16c to be fixed with fasteners. The drain pipe 16b is provided with a convex part with a diameter of more than 2 times for water sealing, and a drain bucket 16d is provided at the drain outlet of the secondary mist eliminator drain pipe 16b; Test holes 5 are provided on the exhaust pipe 14 , the dust removal and demisting intake pipe 18 , and the exhaust gas purification exhaust pipe 20 . There is a dust particle size and concentration test hole 9; the diameter of the test hole 5 is DN80, and a DN40 reducing joint with a flange is connected through the flange, and its length is between the center of the tested pipeline and the flange surface of the reducing joint. The minimum distance is set to be no less than 360mm; the diameter of the dust particle size and concentration test hole 9 is DN80, and the distance from the center of the pipe to be tested to the flange surface of the test hole is set to be no less than 180mm; The distance between the collection pipe 3, the dust exhaust gas collection pipe 8, the gas collection pipe 10, the dust removal and demisting intake pipe 18, and the test hole 5 on the exhaust gas purification exhaust pipe 20 is the same as the distance between the first-level demisters 15 and 2 with spraying. The distances M and N between the flange surfaces of the inlet and exhaust ends of the stage demister 16 and the center of the test hole 5 are respectively set to 6 times and above, 3 times and above the diameter of the pipe diameter, and then combined. A set of test methods for the capability of dust and mist removal and exhaust gas cleaning systems.

The test method of the present invention is simple and reasonable, and the test process method 1 is: the test method 1 of the dust removal and demisting and composite adsorption material system, using the mist drop exhaust gas collection pipe 3 to control the mist droplet (moisture) containing volatile organic compounds. Collection, use the dust exhaust gas collecting hood 7 and the dust exhaust gas collecting pipe 8 to collect the dust 6, connect the mist drop exhaust gas collecting pipe 3 and the dust exhaust gas collecting pipe 8 through the gas collecting pipe 10 to collect the dust-containing mist droplet exhaust gas, flow through the negative The pressure-type dust collector 11 is pretreated with the first-level mist eliminator 15 and the second-level mist eliminator 16 with spraying, and the fan 17 sends the volatile organic compounds for dust removal and mist removal into the composite adsorption material device 19 through the dust removal and mist removal inlet pipe 18 . After the chemical balance purification treatment of the composite adsorption material is carried out inside, it flows through the exhaust gas purification exhaust pipe 20 and is discharged to the outside; The test hole 5 provided on the air pipe 18, the exhaust gas purification exhaust pipe 20, and the bypass exhaust pipe 24, use the dust 6 and the droplet tester to test the particle size and concentration of the dust-containing mist and exhaust gas, and the dust-removing and defogging exhaust gas and the composite adsorption material respectively. The purification capacity of each device.

The test method of the present invention is simple and reasonable, and its test flow method 2 is: the described dust removal and demisting and composite adsorption material system test method 1, the method of using a separate test for the particle size and concentration of the exhaust gas containing mist is: firstly close the dust exhaust gas The collecting pipe 8, the air inlet pipe 12 of the negative pressure type dust collector and the regulating damper 4 set on the dust removal pipe 13 of the negative pressure type dust collector, open the damper a21 on the gas collecting pipe 10 and the damper c27 set on the mist drop exhaust gas bypass pipe 22, Close the damper b23 on the gas collecting pipe 10, when the mist-containing exhaust gas collecting pipe 3 collects the volatile organic compounds containing mist (moisture) emitted during the treatment of the sewage tank 2, it flows in through the gas collecting pipe 10 and the mist-drop exhaust gas collecting pipe 3 To the exhaust pipe 14, it is sent to the composite adsorption material device 19 through the suction and pressure of the fan 17 and the dust-removing and mist-removing intake pipe 18 through the first-level mist eliminator 15 and the second-level mist eliminator 16 for treatment and processing. The particle size and concentration of the removed droplets and the efficiency of exhaust gas purification were obtained by testing the inflowing droplet-containing (moisture) volatile organic compounds and the outlet after system purification with the testing instrument, at the test hole 5.

The test method of the present invention is simple and reasonable, and the test flow method 3 is: the described dust removal and demisting and composite adsorption material system test method 1, adopting the method of individually testing the particle size and concentration of the dust 6 is, firstly, close the mist drop exhaust gas collection The regulating damper 4 set on the pipe 3, the damper a21 and the damper b23 on the air collecting pipe 10, and the damper c27 on the droplet waste gas bypass pipe 22, and closing the damper e33 set on the droplet waste gas bypass pipe a31, dust removal The adjustment damper 4 set on the mist intake pipe 18 and the exhaust gas purification exhaust pipe 20; open the dust exhaust gas collecting hood 7 to connect the adjustment damper 4 set on the dust exhaust gas collecting pipe 8, the air intake pipe 12 of the negative pressure type dust collector and the negative pressure The regulating damper 4 on the dust removal pipe 13 of the dust collector, and the damper d32 set on the droplet exhaust gas bypass pipe a31; It flows into the two sets of negative pressure dust collectors 11 for dust removal treatment, and then passes through the exhaust pipe 14 and is sent to dust removal through the extraction and pressure of the first-level mist eliminator 15 and the second-level mist eliminator 16 and the fan 17. During the discharge process of the defogging intake pipe 18, the mist droplet exhaust gas bypass pipe a31 and the bypass exhaust pipe 24, the inflowing dust 6 is processed and purified in the dust particle size and concentration test hole 9 and the test hole 5 with a test instrument and then exits. The tests obtained 6 particle size and concentration of dust removal and the efficiency of exhaust gas purification.

Claims (2)

1. Dust removal and demisting and composite adsorption material system test method, it is characterized in that: by sewage tank, mist drop exhaust gas collection pipe, dust exhaust gas collecting hood, dust exhaust gas collection pipe, gas collecting pipe, negative pressure type dust collector, exhaust gas Pipe, with spray primary demister, secondary demister, fan, dust removal and defogging intake pipe, composite adsorption material device, exhaust gas purification exhaust pipe, bypass exhaust pipe, regulating damper, test hole, dust It is composed of particle size and concentration test holes; The sewage tank is provided with a sewage pipe and a cover plate, and a mist exhaust gas collection pipe is set on the upper part of the cover plate to collect the exhaust gas containing mist (moisture) volatile organic compounds emitted during the sewage treatment process flowing into the sewage tank; dust exhaust gas collecting hood The conical surface suction port is arranged on the dust accumulation worktable, and the height H from the collected dust is between 500 and 800mm. There is a dust exhaust gas collection pipe on the top of the dust exhaust gas collecting hood on the conical surface. The gas flow rate of the conical surface suction port of the dust and exhaust gas collecting hood shall not be less than 0.3m/s; regulating dampers are respectively provided on the mist drop exhaust gas collecting pipe and the dust exhaust gas collecting pipe, and are connected with the gas collecting pipe, and the collecting pipe is The air pipe is connected with two groups of negative pressure dust collector intake pipe, air valve a, mist drop exhaust gas bypass pipe, air valve b and bypass exhaust pipe respectively; The two groups of negative pressure dust collectors are respectively provided with regulating dampers and the nozzles for flushing, the spray water pipes and the spray regulating water valves for dust in the dust collector cylinders; the two groups of negative pressure dust collector dust removal pipes There is a regulating damper at the outlet which is connected with the exhaust pipe, and the exhaust pipe is connected with the droplet waste gas bypass pipe, the damper c, the inlet end and the outlet end with the spray primary demister and secondary demister. , The inlet end of the fan is connected; the outlet end of the fan is provided with a dust-removing and defogging intake pipe and the bypass exhaust pipe a and the damper d and the damper e; The inlet end of the adsorbent material device is connected; In the composite adsorption material device, there is an improved and modified activated carbon adsorption material, which is filled with an acid adsorption material box, a neutral adsorption material box, and an alkaline adsorption material box. There are three layers, which are called composite adsorption materials. There is also a manual hoist for hoisting the inlet and outlet of the composite adsorption material box; the lower inlet end of the acid adsorption material box is provided with a dust-removing and defogging air intake pipe and an adjustment damper, and the upper outlet end of the alkaline adsorption material box is provided with exhaust gas purification The exhaust pipe and the regulating air valve, the dust removal and demisting intake pipe and the regulating air valve of the exhaust gas purification exhaust pipe are connected to each other; The bypass exhaust pipe and the exhaust gas purification exhaust pipe are connected to each other to form a set of dust removal and demisting and composite adsorption material system; There are three-phase separators in the lower part of the two sets of negative pressure type dust collectors, which are used for gas-solid-liquid separation in the waste gas containing dust mist droplets; There is also a drain valve and a dust discharge pipe for separate discharge of liquids and solids; two sets of negative pressure dust collectors and three-phase separators are arranged as a whole device on the upper left side of the dust collecting tank; The inlet of the first-level mist eliminator is equipped with a spray regulating water valve for connecting the spray nozzle and the spray pipe in the mist eliminator. The drain valve and the primary demister drain pipe and bracket; the secondary demister is equipped with a secondary demister filter module and a drainage valve for drainage, a secondary demister drain pipe and a secondary demister bracket The first-level mist eliminator with spray is arranged on the right side of the upper part of the dust collecting tank, and the first-level mist eliminator drain pipe is provided with a convex part larger than 2 times the pipe diameter for water sealing, and the first-level mist eliminator One end of the drain outlet of the drain pipe is connected to the water inlet at the top of the dust collecting tank, and the secondary mist eliminator is independently set on the ground by means of the secondary mist eliminator bracket to be fixed with fasteners. The pipe is provided with a convex part larger than 2 times the pipe diameter for water sealing, and a drainage bucket is provided at the drainage outlet of the secondary demister drain pipe; There are test holes on the mist exhaust gas collection pipe, gas collecting pipe, exhaust pipe, dust removal and defogging intake pipe, and exhaust gas purification exhaust pipe. There are dust particle size and concentration test holes on the dust removal pipe; the diameter of the test hole is DN80, and a DN40 reducing joint with a flange is connected through the flange, and its length is from the center of the tested pipe to the flange surface of the reducing joint. The minimum distance between them is set to be no less than 360mm; the diameter of the dust particle size and concentration test hole is DN80, and the distance between the center of the pipeline to be tested and the flange surface of the test hole is set to be no less than 180mm; The distance between the collection pipe, dust and exhaust gas collection pipe, gas collecting pipe, dust removal and defogging intake pipe, exhaust gas purification exhaust pipe, and the distance between the test holes and the intake air with the spray primary demister and secondary demister The M and N distances between the flange surface of the end and the exhaust end and the center of the test hole are respectively set to 6 times and above, 3 times and above the diameter of the pipe diameter, and then combined into a set for dust removal, fog removal and exhaust gas. Test method for decontamination system capability. 2. The method for testing dust removal and fog removal and composite adsorbent material system according to claim 1, wherein the dust collecting water tank is used as auxiliary equipment for draining water during the test process of the dust collecting and fog removal system, and a middle part is arranged in the middle of the dust collecting water tank. The clapboard is divided into two sinks, and a V-shaped opening is provided at the center of the clapboard at 50mm below the water level; at different positions at the bottom of the dust collecting sink, there are sink drain pipes a, sink drain pipes b and drain valves. There is a water inlet pipe and a water inlet valve above the water level in the dust collecting tank; the water tank drain pipe a and the water tank drain pipe b are connected to each other with pipes, and an external drain pump and a drain pipe can be combined to form a drainage system, which can be used for the dust collection tank. sewage is discharged to the outside.

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