CN217367826U

CN217367826U - Gas purification device for removing insoluble VOCs (volatile organic compounds) by atomization combined biological tower

Info

Publication number: CN217367826U
Application number: CN202221533933.3U
Authority: CN
Inventors: 杜荣坤; 李顺义; 朱仁成; 张博文
Original assignee: Henan Zhengda Jiayuan Environmental Protection Technology Co ltd; Zhengzhou University
Current assignee: Henan Zhengda Jiayuan Environmental Protection Technology Co ltd; Zhengzhou University
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-09-06
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a gas purification device for removing insoluble VOCs by an atomization combined biological tower. The device comprises a biological tower, wherein the biological tower comprises a barrel, the barrel is provided with an air inlet and an air outlet, and a microbial packing layer and a spray header are arranged in the barrel. The device still includes the preliminary degradation tower, and the preliminary degradation tower includes the casing, is equipped with the intake pipe on the casing, and the lower part of casing is the stock solution district, is equipped with the atomizer in the stock solution district, is equipped with the droplet export on the casing, and the droplet export is through communicating pipe and intake pipe intercommunication. The upper part of the shell is a baffling area, a baffle plate is arranged in the baffling area, and the shell is provided with a communicating air outlet pipe communicated with the biological tower. The liquid of surfactant is atomized, and partly droplet gets into preliminary degradation tower along with waste gas, and the other part droplet soaks and gets into the waste gas mixture in the preliminary degradation tower, carries out intensive mixing contact in the baffling district under the effect of baffling board and carries out preliminary degradation, further degrades by the microorganism, has improved hydrophobic nature VOCs's purification efficiency in the waste gas greatly.

Description

Gas purification device for removing insoluble VOCs (volatile organic compounds) by atomization combined biological tower

Technical Field

The utility model relates to a gaseous purification technology field, concretely relates to atomizing is united biological tower and is got rid of indissolvable VOCs's gaseous purifier.

Background

VOCs are short for volatile organic compounds, most of VOCs have special unpleasant smell and have toxic, irritant, teratogenic and carcinogenic effects, and particularly benzene, toluene, formaldehyde and the like can cause great harm to human health. VOCs are important precursors causing urban dust haze and photochemical smog and mainly come from the processes of coal chemical industry, petrochemical industry, fuel coating manufacturing, solvent manufacturing and using and the like. VOCs are divided into hydrophobic VOCs and hydrophilic VOCs according to the types of polar groups, and the hydrophobic VOCs are more difficult to be degraded by microorganisms than the hydrophilic VOCs because the VOCs have the problems of low mass transfer efficiency, poor effect and the like in the process from a gas phase to a liquid phase.

At present, the method for treating the waste gas containing the VOCs is commonly used in a biological tower, a microorganism packing layer is arranged in the biological tower, the VOCs are biodegraded through microorganisms, and a surfactant is introduced to the biological tower as a second organic phase for treating hydrophobic VOCs, namely insoluble VOCs. Generally, the surfactant is put in liquid and sprayed to the microbial filler layer in a spraying mode, and the microorganisms and the surfactant together remove VOCs in the waste gas. However, the contact time of the surfactant and the gas VOCs is short in the method, so that the purification efficiency of the VOCs is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a biological tower of atomizing is united and is got rid of indissolvable VOCs's gas purification device to solve the problem that exists among the prior art to indissolvable VOCs purification efficiency hangs down in the waste gas.

In order to achieve the above object, the utility model discloses a gaseous purifier that indissolvable VOCs was got rid of to atomizing combination biological tower adopts following technical scheme: a gas purification device for removing insoluble VOCs by an atomization combined biological tower comprises a biological tower, wherein the biological tower comprises a barrel, an air inlet and an air outlet are formed in the barrel, a microbial packing layer is arranged in the barrel, and a spray head is arranged above the microbial packing layer in the barrel; the gas purification device also comprises a preliminary degradation tower, wherein the preliminary degradation tower comprises a shell, an air inlet pipe is arranged on the shell, the lower part of the shell is a liquid storage area for storing surfactant liquid, an atomizer is arranged in the liquid storage area, and a fog drop outlet is arranged on the shell and is communicated with the air inlet pipe through a communicating pipe; the upper part of the shell is provided with a baffling area, and a baffle plate is arranged in the baffling area; the shell is provided with an air outlet pipe which is communicated with the baffling area and the air inlet of the biological tower.

The number of the baffle plates is at least two, and the baffle plates are arranged in a staggered manner at intervals up and down, so that the airflow flows in an S-shaped path in the baffling area.

The baffle plate is a porous plate, so that part of the air flow can directly pass through the holes on the baffle plate.

A supporting rod is arranged in the liquid storage area in the shell, and a conical cylindrical baffle with an upward small end and a downward large end is arranged on the supporting rod.

The shell is provided with a water capacity observation port, and the water capacity observation port is provided with a cover.

The air inlet pipe is connected with the shell through a Venturi tube, and the communicating pipe is connected to the throat part of the Venturi tube.

An air pump is arranged on the air inlet pipe.

The nutrient solution pond is arranged below the barrel, the lower part of the barrel is provided with a backflow port, the nutrient solution pond is connected with the spray header in the barrel through a liquid pipeline, and the liquid pipeline is provided with a liquid pump.

And an air exhaust pump is arranged at the air outlet of the barrel.

The utility model has the advantages that: liquid that contains surfactant active atomizes into the droplet under the effect of atomizer, partly droplet gets into the intake pipe through communicating pipe and gets into preliminary degradation tower along with waste gas in, the other part droplet soaks and gets into the waste gas mixture in the preliminary degradation tower, carry out the intensive mixing contact in baffling district under the effect of baffling board, the longer contact time of droplet and hydrophobic VOCs has also been given to the baffling board, surfactant active to hydrophobic VOCs's preliminary degradation has fully been increaseed, gas after the preliminary degradation gets into in the biological tower further degrades by the microorganism, hydrophobic VOCs's purification efficiency in the waste gas has been improved greatly.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the gas purification apparatus for removing insoluble VOCs by the atomization combined biological tower of the present invention.

Detailed Description

The utility model discloses an atomizing is united biological tower and is got rid of gaseous purifier's of indissolvable VOCs embodiment, as shown in figure 1, including biological tower 1 and preliminary degradation tower 2. The biological tower comprises a barrel body, wherein an air inlet 3 and an air outlet 4 are arranged on the barrel body, a microbial packing layer 5 is arranged in the barrel body, the microbial packing layer belongs to the prior art, and the specific components and the arrangement mode of the microbial packing layer are not detailed in the embodiment. A spray head 7 is arranged above the microbial packing layer in the cylinder, a nutrient solution pool 9 is arranged below the cylinder, and a backflow port 8 is arranged at the lower part of the cylinder, so that liquid can conveniently flow back to the nutrient solution pool. The nutrient solution pool is connected with the spray header 7 in the cylinder body through a liquid pipeline, a liquid pump 10 is arranged on the liquid pipeline, and the liquid pump 10 adopts a peristaltic pump. An air pump 6 is arranged at the air outlet 4 of the cylinder body.

The preliminary degradation tower 2 comprises a shell, and an air inlet pipe 11 and an air outlet pipe 12 are arranged on the shell. The lower part of the housing is a reservoir 13 for storing a surfactant liquid, in which is located an atomiser 14. The housing is provided with a mist outlet which is communicated with the air inlet pipe through a communicating pipe 17. Specifically, the intake pipe 11 is connected with the housing through the venturi tube 16, and the communicating pipe 17 is connected to the throat portion of the venturi tube 16, and the venturi tube structure belongs to the prior art, and the specific joint of the venturi tube is not detailed in this embodiment, and the venturi tube simply includes an inlet section, a contraction section, a throat and a diffusion section, and the throat is the position with the smallest diameter. An air pump 15 is provided on the intake pipe 11. A supporting rod 18 is arranged in the liquid storage area in the shell, a conical cylindrical baffle 19 with an upward small end and a downward large end is arranged on the supporting rod, and the conical cylindrical baffle 19 is made of transparent glass materials and can enable fog drops to rise uniformly as much as possible. The water feeding capacity observation port 20 of the shell is provided with a cover 21.

The upper part of the housing is a baffling region 22 in which baffles 23 are disposed. The air outlet pipe is communicated with the baffling area and the biological tower. The number of the baffle plates is two, and the baffle plates are arranged in a staggered way at intervals from top to bottom, so that the airflow flows in an S-shaped path in a baffling area. The baffle is a perforated plate so that part of the gas flow can pass directly through the holes in the baffle. Specifically, the connecting part of the upper air inlet pipe and the connecting part of the air outlet pipe of the shell are oppositely arranged on the shell walls at two sides of the shell and are sequentially arranged in a vertically staggered manner. The baffle plate comprises a lower baffle plate and an upper baffle plate, one end of the lower baffle plate is connected to the inner wall above the upper air outlet pipe of the shell, the other end of the lower baffle plate is arranged at an interval with the inner wall of the shell, one end of the upper baffle plate is connected to the inner wall below the upper air outlet pipe of the shell, and the other end of the upper baffle plate is arranged at an interval with the inner wall of the shell. Part of the airflow can directly ascend through the holes on the porous plate, part of the airflow can flow through the S-shaped path, and finally the whole airflow is discharged from the air outlet pipe and enters the biological tower.

When the device is used, waste gas containing VOCs is sucked into an air inlet pipe by an air pump, the waste gas passes through a Venturi tube, surfactant liquid is atomized into fog drops under the action of an atomizer, one part of fog drops are brought into the Venturi tube under the condition of negative pressure generation and enter a primary degradation tower along with gas, the other part of fog drops are overflowed through a conical cylindrical baffle plate and are mixed with the entering air flow, the waste gas is fully mixed and contacted in a baffling area under the action of a baffle plate to perform primary degradation, and then the waste gas enters a biological tower to be continuously degraded.

In other embodiments of the present invention, the number of the baffle plates can be adjusted according to actual needs, for example, three or four or more baffle plates; the baffle plate can also adopt a solid plate instead of a porous plate, and the path of the gas flow is an S-shaped path; the air inlet pipe can be provided with no air pump as long as the air pump at the air outlet of the biological tower provides power; an air pump is not needed to be arranged at the air outlet of the biological tower, and the air pump on the air inlet pipe is used for providing power.

Claims

1. A gas purification device for removing insoluble VOCs by an atomization combined biological tower comprises a biological tower, wherein the biological tower comprises a cylinder body, the cylinder body is provided with a gas inlet and a gas outlet, a microbial packing layer is arranged in the cylinder body, and a spray head is arranged above the microbial packing layer in the cylinder body; the method is characterized in that: the gas purification device also comprises a preliminary degradation tower, wherein the preliminary degradation tower comprises a shell, an air inlet pipe is arranged on the shell, the lower part of the shell is a liquid storage area for storing surfactant liquid, an atomizer is arranged in the liquid storage area, and a fog droplet outlet is arranged on the shell and is communicated with the air inlet pipe through a communicating pipe; the upper part of the shell is provided with a baffling area, and a baffle plate is arranged in the baffling area; the shell is provided with an air outlet pipe which is communicated with the baffling area and the air inlet of the biological tower.

2. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to claim 1, wherein: the number of the baffle plates is at least two, and the baffle plates are arranged in a staggered manner at intervals from top to bottom, so that the airflow flows in an S-shaped path in a baffling area.

3. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to claim 2, wherein: the baffle plate is a porous plate, so that part of the air flow can directly pass through the holes on the baffle plate.

4. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to claim 1, wherein: a supporting rod is arranged in the liquid storage area in the shell, and a conical cylindrical baffle with an upward small end and a downward large end is arranged on the supporting rod.

5. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to claim 1, wherein: the shell is provided with a water capacity observation port, and the water capacity observation port is provided with a cover.

6. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to claim 1, wherein: the air inlet pipe is connected with the shell through a Venturi tube, and the communicating pipe is connected to the throat part of the Venturi tube.

7. The gas purification device for removing insoluble VOCs in an atomization combined biological tower according to claim 6, wherein: an air pump is arranged on the air inlet pipe.

8. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to any one of claims 1-7, wherein: the nutrient solution pond is arranged below the barrel, the lower part of the barrel is provided with a backflow port, the nutrient solution pond is connected with the spray header in the barrel through a liquid pipeline, and the liquid pipeline is provided with a liquid pump.

9. The gas purification apparatus for removing insoluble VOCs in an atomization combined biological tower according to claim 8, wherein: and an air exhaust pump is arranged at the air outlet of the barrel.