CN210045409U

CN210045409U - High-voltage electrostatic oil removing device

Info

Publication number: CN210045409U
Application number: CN201920571340.8U
Authority: CN
Inventors: 杨庆锋
Original assignee: ZHEJIANG RUNYANG NEW MATERIAL TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG RUNYANG NEW MATERIAL TECHNOLOGY Co Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-02-11
Anticipated expiration: 2029-04-25

Abstract

The utility model relates to a VOC exhaust-gas treatment technical field especially relates to a high-voltage static deoiling device, its oily particulate matter that is arranged in detaching dry waste gas, be equipped with the exhaust pipe of air inlet and gas outlet respectively including the both ends face, be equipped with in the exhaust pipe and be connected with the power through step up transformer and produce the static silk of 4 ten thousand-7.5 ten thousand volts of high-voltage electrostatic field in the exhaust pipe. The utility model discloses a can adsorb the VOC and the dust in the dry waste gas through 4 ten thousand-7.5 ten thousand volts of high voltage electrostatic field, and the treatment effect is good, still has easily abluent advantage.

Description

High-voltage electrostatic oil removing device

Technical Field

The utility model relates to a VOC exhaust-gas treatment technical field especially relates to a high-voltage static deoiling device.

Background

The polyolefin plastic has wide application range, good physical, chemical and mechanical properties, good toughness, flexibility and buffering performance, electrical insulation, heat insulation and other properties, and is widely applied to the fields of packaging, chemical engineering, buildings and the like. Polyolefin-based foams are widely used and are one of the earliest successful foams. At present, the preparation of the cross-linked polyolefin is mainly that firstly, the polyolefin raw material and various auxiliary agents are kneaded and granulated, and then the mixture is added into an extruder for plasticizing to obtain a polyolefin master slice with all components uniformly mixed, and then the polyolefin master slice is foamed through a foaming furnace.

Because a certain amount of flue gas and organic waste gas can be generated in the foaming process of the foaming furnace workshop, the waste gas needs to be treated in order to meet the increasingly strict environmental protection requirements of the country and the place.

At present, VOCS (volatile organic compounds) in the foaming new material industry discharges high-temperature smoke volatile matters mainly generated when plastic raw materials are melted at high temperature, and waste gas contains a large amount of smoke, oily particles, nitrogen oxides, carbon monoxide, hydrocarbons, non-methane total hydrocarbons, dust and the like. And oily particles and hydrocarbon volatile matters discharged from the waste gas are in a gaseous state at high temperature.

In contrast, the company designs a dry treatment process for high-temperature VOC-dust mixed waste gas, and due to the fact that the electrostatic field below 3 ten thousand volts hardly enables corona to occur on VOC, the corona intensity is not high due to too low voltage, the possibility of charging VOC oil particles is low, and the oil removal efficiency is reduced. Therefore, a high-voltage electrostatic oil removing device which can generate a high-voltage electrostatic field of more than 3 kilovolts and is suitable for large-scale waste gas treatment in factories is needed.

The patent document with the application number of CN201520204571.7 discloses a high-voltage electrostatic tube of an electrostatic oil smoke purifier for catering industry, which consists of an electrostatic outer tube, metal electrostatic wires, end covers and end cover compression columns, wherein the upper part and the lower part of the tube body of the electrostatic outer tube are correspondingly provided with a plurality of air inlets and air outlets, the tube orifices of the top and the bottom of the electrostatic outer tube are respectively provided with an end cover A and an end cover B, and the end cover A and the end cover B are respectively provided with the end cover compression columns; a metal static wire is arranged in the static outer tube; two ends of the metal static wire are respectively connected with the end cover A and the end cover B through bolts, and the static wire is tensioned; a wire passing hole is formed in the end cover B; a ten-thousand-volt high-voltage electrode is connected into the wire through hole and is connected with the metal static wire; the length of the anode and the grounding electrode of the electrostatic tube body is increased, the distance between the anode and the grounding electrode is shortened, and a high-voltage electrostatic tube array is formed to improve the oil smoke purification efficiency.

Firstly, the application is mainly used for purifying kitchen oil fume and only can be connected with a positive ten thousand volt high-voltage electrode. On one hand, oily particle structures and concentrations of kitchen oil smoke and industrial waste gas are different, and ten thousand volts of high voltage in the application is not enough to enable VOC oil particles in foaming waste gas to generate corona; on the other hand, the amount of treatment is insufficient for industrial production.

Secondly, as can be seen from the attached drawings of the application, in order to tension the metal electrostatic wire, end covers are respectively arranged at two ends of the electrostatic outer tube, so that the air inlet and the air outlet can only be arranged on the side wall of the electrostatic outer tube. This will cause gas to get into the static outer tube by the air intake of lateral wall after, can move to the oblique top under the inertia effect, not only keep away from the static outer tube inner wall that is used for adsorbing and cause the poor problem of adsorption effect, still pollute the static silk easily to probably blow the oil particle of having attached to the pipe wall, thereby bring out the static outer tube with it, cause the poor problem of deoiling effect, its gas also is difficult to follow the air outlet and escape simultaneously.

In addition, after the electrostatic outer pipe in the application is used for a long time, oil particles which are adhered to the inner wall of the electrostatic outer pipe and are difficult to slide are difficult to clean, the oil removing capability of the electrostatic outer pipe is reduced along with the increase of adhered objects, and the service life of the electrostatic outer pipe is short.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the above problem and provide a high-voltage electrostatic oil removing device which is used for industrial drying removal, contains VOC waste gas, has good oil removing effect and is easy to clean.

The utility model provides a technical scheme of problem provide a high-voltage static deoiling device for detach the oily particulate matter in the dry waste gas, be equipped with the exhaust pipe of air inlet and gas outlet respectively including both ends face, be equipped with in the exhaust pipe and be connected in order to produce the static silk of 4 ten thousand-7.5 ten thousand volts of high voltage electrostatic fields in the exhaust pipe through step up transformer and power.

Preferably, the waste gas pipe is arranged vertically, one end of the static wire is connected with the power supply, the other end of the static wire penetrates through the waste gas pipe and is provided with a gravity block which is used for enabling and enabling the static wire body to be tensioned and vertically arranged in the waste gas pipe and avoiding the static wire to be in contact with the inner wall of the waste gas pipe.

Preferably, the exhaust gas pipe is provided with at least 200, and a plurality of exhaust gas pipes are arranged in a shell through a mounting plate.

Preferably, the shell is provided with a main air inlet and a main air outlet, and the main air inlet and the main air outlet are respectively provided with a fire retardant valve.

Preferably, the electrostatic filaments in the several exhaust pipes are connected in parallel to a power supply.

Preferably, the top of the exhaust pipe is provided with a spraying piece for indirectly washing the inner wall of the exhaust pipe.

Preferably, the bottom of the exhaust gas pipe is provided with a collecting groove for collecting oil particles sliding along the inner wall of the exhaust gas pipe.

Preferably, the step-up transformer is further connected with a voltage regulator for regulating the voltage value.

Preferably, the diameter of the end face of the exhaust gas pipe is 200-300 mm.

Preferably, the exhaust pipe is 6 to 10m high.

The utility model has the advantages that:

1. the end face of the waste gas pipe forms a gas inlet and a gas outlet, the electrostatic wire naturally stretches through the gravity block arranged at the bottom and falls, and gas is vertically discharged, oil particles vertically fall and do not affect each other.

2. All produce high voltage electrostatic field through the static silk in setting up a plurality of exhaust gas pipes, every exhaust gas pipe, on the one hand in order being applicable to the processing of a large amount of waste gases in the industry, on the other hand shunts each exhaust gas intraductal with waste gas, avoids the inhomogeneous problem of processing that a large amount of waste gases have, and the treatment effect is good.

3. The top of the waste gas pipe is provided with a spraying piece for washing the inner wall, and the cleaning waste water also directly falls down along the inner wall and is easy to clean.

4. The import and the export of whole device set up back-fire relief valve respectively, close when taking place the conflagration, and its separates the effect of cigarette back-fire relief, protection device itself on the one hand, and on the other hand improves the security.

5. The method is suitable for treating the VOC oil particles in industrial drying waste gas, particularly IXPE foaming waste gas, and the VOC oil particles are difficult to generate corona below 3 ten thousand volts. And because no water participates in the foaming production process and the humidity of the waste gas is very low, the applied direct current voltage can reach 4-7.5 ten thousand volts, so that VOC oil particles almost completely generate corona, thereby achieving good oil removing effect. The problem that high direct current voltage cannot be applied due to the electrical breakdown discharge phenomenon caused by overhigh humidity is solved.

Drawings

FIG. 1 is a schematic structural diagram of a high-voltage electrostatic oil removal device;

in the figure: waste gas pipe 1, air inlet 11, gas outlet 12, mounting panel 13, casing 14, static silk 2, gravity piece 21, power 3, step up transformer 4, voltage regulator 5, spray 6, collecting vat 7.

Detailed Description

The following are embodiments of the present invention and the accompanying drawings are used to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

A high-voltage electrostatic oil removal device is used for removing oily particles in dry waste gas, and is particularly suitable for treating high-temperature foaming waste gas. As shown in fig. 1, the electrostatic filament generating device comprises an exhaust gas pipe 1, two end faces of which are respectively provided with an air inlet 11 and an air outlet 12, wherein an electrostatic filament 2 which is connected with a power supply 3 through a step-up transformer 4 and generates a 4 ten thousand-7.5 ten thousand volt high-voltage electrostatic field in the exhaust gas pipe 1 is arranged in the exhaust gas pipe 1. The booster transformer 4 is also connected with a voltage regulator 5 for regulating the voltage value.

In the embodiment, the device is used for removing VOC oil particles from 90-115 ℃ waste gas generated by a foaming furnace, because the temperature of the waste gas is high, the waste gas hardly contains moisture, and the humidity of the waste gas in the polar region enables the electrostatic filament 2 to apply 4-7.5 ten thousand volts of high voltage without breakdown discharge, so that the oil removing effect is effectively improved.

Wherein, the air inlet 11 and the air outlet 12 are respectively arranged on the end surfaces of the two ends of the waste gas pipe 1, which makes the flowing direction of the waste gas be straight when the waste gas runs in the waste gas pipe 1, thereby preventing the waste gas from polluting the static wires 2 and blowing and taking away the particles attached to the inner wall of the waste gas pipe 1.

The exhaust gas pipe 1 is generally vertically arranged, one end of the static wire 2 is connected with the power supply 3, the other end of the static wire passes through the exhaust gas pipe 1 and is provided with the gravity block 21, so that the static wire 2 body is vertically arranged in the exhaust gas pipe 1 in a tensioning manner, the static wire 2 is prevented from contacting with the inner wall of the exhaust gas pipe 1, and a uniform high-voltage electrostatic field is generated in the exhaust gas pipe 1. Wherein the gravity block 21 may be a lead block.

Since the application is used for industrial waste gas treatment, the treatment capacity and treatment effect are improved. The end surface diameter of the exhaust gas pipe 1 is 200-300 mm. The exhaust pipe 1 is 6-10m high. At least 200 exhaust pipes 1 are provided, and a plurality of exhaust pipes 1 are provided in a housing 14 through mounting plates 13. The electrostatic filaments 2 in several exhaust pipes 1 are connected in parallel to a power supply 3. In addition, the housing 14 is provided with a main air inlet and a main air outlet, which are each provided with a fire relief valve to ensure safety.

In this embodiment, the waste gas pipes 1 are provided with 248 pipes, the diameter of the end face of each waste gas pipe 1 is 250mm, and the waste gas pipes are connected with 6 kilovolts in parallel. The shell 14 is made of carbon steel and sprayed with plastic, and the exhaust gas pipe 1 is made of stainless steel.

During the use, VOC oil mist or oil grain and partial dust in the waste gas of waste gas pipe 1 inner wall absorption in waste gas pipe 1, most adsorbed oil mist and dust condense can follow the pipe wall landing under the action of gravity behind the inner wall, therefore the bottom of waste gas pipe 1 is equipped with the collecting vat 7 that is used for collecting the oil grain along the landing of waste gas pipe 1 inner wall.

And because all the oil particles adsorbed on the inner wall of the exhaust gas pipe 1 can not slide down by themselves, the top of the exhaust gas pipe 1 is provided with a spraying piece 6 for indirectly washing the inner wall of the exhaust gas pipe 1. The spraying piece 6 arranged here only has a cleaning effect on the inner wall of the exhaust gas pipe 1, and does not influence the humidity of the exhaust gas.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a high-pressure static deoiling device for detach oily particulate matter in the dry waste gas which characterized in that: the device comprises an exhaust gas pipe (1) with an air inlet (11) and an air outlet (12) respectively arranged on two end faces, wherein an electrostatic filament (2) which is connected with a power supply (3) through a step-up transformer (4) and generates a high-voltage electrostatic field of 4-7.5 ten thousand volts is arranged in the exhaust gas pipe (1).

2. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the waste gas pipe (1) is vertically arranged, one end of the static wire (2) is connected with the power supply (3), and the other end of the static wire penetrates through the waste gas pipe (1) and is provided with a gravity block (21) which is used for enabling and enabling the static wire (2) body to be tensioned and vertically arranged in the waste gas pipe (1) and avoiding the static wire (2) to be contacted with the inner wall of the waste gas pipe (1).

3. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the exhaust gas pipe (1) is at least provided with 200, and a plurality of exhaust gas pipes (1) are arranged in a shell (14) through mounting plates (13).

4. The high-voltage electrostatic oil removing device according to claim 3, characterized in that: the shell (14) is provided with a main air inlet and a main air outlet, and the main air inlet and the main air outlet are respectively provided with a fire retardant valve.

5. The high-voltage electrostatic oil removing device according to claim 3, characterized in that: the electrostatic wires (2) in the plurality of exhaust gas pipes (1) are connected in parallel with the power supply (3).

6. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the top of the waste gas pipe (1) is provided with a spraying piece (6) for indirectly washing the inner wall of the waste gas pipe (1).

7. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the bottom of the waste gas pipe (1) is provided with a collecting tank (7) for collecting oil particles sliding along the inner wall of the waste gas pipe (1).

8. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the step-up transformer (4) is also connected with a voltage regulator (5) for regulating the voltage value.

9. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the end surface diameter of the waste gas pipe (1) is 200-300 mm.

10. The high-voltage electrostatic oil removal device according to claim 1, characterized in that: the height of the waste gas pipe (1) is 6-10 m.