CN212409341U

CN212409341U - Laboratory oven VOC processing apparatus

Info

Publication number: CN212409341U
Application number: CN201921585227.1U
Authority: CN
Inventors: 李恩
Original assignee: Shanghai You Chuang Chemicals Co ltd
Current assignee: Shanghai You Chuang Chemicals Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-01-26
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a laboratory oven VOC processing apparatus, includes the tuber pipe, fires burning furnace, VOC detects alarm system, temperature control system, active carbon adsorber. The VOC discharged from the oven is sequentially sent to a filtering processor and an active carbon absorber through an air pipe for pretreatment, then sent to a combustion furnace, and the treated gas enters a VOC detection alarm system for detection, then can be subjected to temperature control through a temperature control system according to the detection result, then is subjected to secondary filtration, and then returns to the oven again for circulation; high-altitude discharge can also be carried out. The utility model discloses can carry out effectual processing to the VOC that the laboratory oven discharged, reduce the harm to experiment staff's health and environment.

Description

Laboratory oven VOC processing apparatus

Technical Field

The utility model relates to a VOC exhaust-gas treatment technical field especially relates to a laboratory oven VOC processing apparatus.

Background

VOC refers to a class of volatile organic compounds that can create hazards. The degradation modes are various: firstly, the adsorption by an active adsorption method is one of the methods with good treatment effect and wider application, and the adsorbents comprise active carbon, diatomite, zeolite and the like, wherein the active carbon adsorption is most applied. Secondly, an induced air high-altitude discharge method: one of the most used and most convenient methods. And thirdly, the combustion treatment method adopts normal temperature or catalytic oxidation combustion treatment, and gas is introduced into a boiler or an incinerator for combustion through an induced draft pipeline. Absorption degassing method: the diesel oil or gasoline is used for absorbing VOC, and the absorbed solvent can be used for fuel or diluent. The method is convenient to operate and low in cost, but volatile gas residues generally exist after absorption treatment, and the VOC cannot be reduced to zero because the organic solvent is volatile, and the absorption rate is lower when the organic solvent meets high temperature. In addition, there are a condensation collection method, a biological treatment method, and the like.

Oven can produce little to moderate equivalent VOC usually in the laboratory, generally ignored by managers, a blind area of environmental protection safety can be said, not only dangerous laboratory staff's health, can arouse the not up-to-standard condition of VOC emission even, recent years, people pay close attention to the environmental protection day by day, supervision to VOC emission is more severe, punishment dynamics to discharging not up-to-standard also constantly strengthens, impel to administer the technique constantly to the factory VOC, meanwhile, we need develop new technique equally and fill up the improvement of laboratory VOC.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the shortage of the oven VOC treatment technology in the laboratory causes harm to research personnel and environment. To the defect of prior art, provide a novel laboratory oven VOC processing apparatus.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:

the utility model provides a laboratory oven VOC processing apparatus which characterized in that: the system comprises an air pipe, a combustion furnace, a VOC detection alarm system, a temperature control system and a second activated carbon absorber; one end of the air suction hood is connected with the oven, and the other end of the air suction hood is connected with the combustion furnace through the air pipe by the filter processor; the combustion furnace is respectively connected with the VOC detection alarm system and the temperature control system through a first regulating valve and a second regulating valve through pipelines; and the temperature control system is connected with the oven through the second activated carbon adsorber through a pipeline.

Furthermore, a first activated carbon adsorber is arranged on an air pipe between the filtering processor and the combustion furnace.

Furthermore, an air speed sensor and an air speed regulator are arranged on the air pipe.

Further, the wind speed regulator adopts a propeller type wind speed sensor.

Furthermore, an explosion-proof fan is arranged on an air pipe between the air suction hood and the filtering processor.

Further, the first activated carbon adsorber and the second activated carbon adsorber are designed to adopt honeycomb activated carbon adsorbers.

Further, the filtration processor is designed as a multi-layer cloth bag filter.

Further, the temperature control system is provided with a temperature sensor and a temperature controller.

Further, the temperature sensor is a contact temperature sensor.

Further, the temperature controller comprises a PLC control assembly and refrigeration equipment, and the input end and the output end of the PLC control assembly are respectively electrically connected with the temperature sensor and the refrigeration equipment.

The utility model adopts the above technical scheme, compare with prior art, have following technological effect:

the utility model sequentially sends the VOC discharged from the oven to the filter processor and the activated carbon absorber through the air pipe for pretreatment, then to the combustion furnace, and the gas after high temperature treatment returns to the oven again after secondary filtration through the second activated carbon absorber after temperature control by the temperature control system for circulation; finally if will discharge waste gas and need detect through VOC detection alarm system, the testing result is qualified to carry out the high altitude and discharges, the utility model provides a VOC processing apparatus can sweep away the blind spot that laboratory VOC handled, can carry out effectual processing to the VOC that the laboratory oven discharged, reaches safety ring and protects the purpose, and greatly reduced is to the harm of experiment staff's health and environment.

Drawings

Fig. 1 is a schematic structural view of a laboratory oven VOC treatment device of the present invention;

description of reference numerals:

1-air suction hood, 2-explosion-proof fan, 3-air pipe, 4-filtration processor, 5-first activated carbon absorber, 6-combustion furnace, 7-first regulating valve, 8-VOC detection alarm system, 9-temperature control system, 10-second activated carbon absorber and 11-second regulating valve.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1, the embodiment provides a laboratory oven VOC treatment device, which includes an air duct 3, a combustion furnace 6, a VOC detection alarm system 8, a temperature control system 9, and a second activated carbon adsorber 10; one end of the air suction hood 1 is connected with the oven, and the other end of the air suction hood is connected with the combustion furnace through an air pipe by sequentially passing through the filter processor 4 and the activated carbon absorber; the combustion furnace is respectively connected with the VOC detection alarm system and the temperature control system through a first regulating valve and a second regulating valve through pipelines; and the temperature control system is connected with the oven through the second activated carbon adsorber through a pipeline.

In the present embodiment, as shown in fig. 1, a first activated carbon adsorber 5 is provided in the duct 3 between the filtration processor 4 and the combustion furnace 6.

In the present embodiment, as shown in fig. 1, the wind pipe 3 is provided with a wind speed sensor and a regulator. Preferably, the wind speed sensor is a propeller type wind speed sensor, the regulator comprises a control unit and a regulating valve inside the wind pipe, and the control unit is preferably a single chip microcomputer. After the propeller type air speed sensor measures the air speed in the air pipe 3, the air speed is converted into a corresponding standard point signal and transmitted to the single chip microcomputer, the single chip microcomputer controls an adjusting valve inside the air pipe according to the received signal, if the air speed exceeds an upper limit value, the air speed is reduced, and stable air speed is obtained, so that the air flow speed in the air pipe 3 is controlled, the air flow speed in the air pipe 3 is kept to provide a proper working environment for the subsequent filtering processor 4 and the active carbon adsorber 5, and the best pretreatment effect is achieved.

In the present embodiment, as shown in fig. 1, an explosion-proof blower 2 is disposed on the air duct 3 between the air suction hood 1 and the filtering processor 4. The explosion-proof fan 2 can completely absorb the waste gas in the oven to provide power; because the composition of the waste gas in the oven is unknown, for safety reasons, if the waste gas in the oven contains flammable and explosive gas, the explosion-proof fan 2 can be used for preventing accidents.

In the present embodiment, as shown in fig. 1, the first activated carbon adsorber 5 and the second activated carbon adsorber 10 employ honeycomb activated carbon adsorbers. The honeycomb activated carbon adsorber can adsorb other toxic and harmful gases besides VOC in the waste gas, has wide function, good purification effect and small wind speed resistance.

In this embodiment, as shown in fig. 1, the filtration processor 4 is a multi-layer bag filter. The multilayer cloth bag filter is high temperature resistant, acid and alkali resistant, can block dust in the gas, prevents 5 pore blockages of active carbon adsorber from influencing work efficiency, prolongs the life of active carbon.

In the present embodiment, as shown in fig. 1, the temperature control system 9 is provided with a temperature sensor and a temperature controller. Since the temperature of the exhaust gas discharged from the combustion furnace 6 is high, the excessive temperature seriously affects the operation efficiency of the second activated carbon adsorber 10, and even causes a desorption phenomenon. Therefore, the temperature control system 9 can not only improve the working efficiency of the second activated carbon adsorber 10 but also prolong the service life of the activated carbon in the second activated carbon adsorber 10 by performing the temperature reduction treatment and the wind speed control treatment on the exhaust gas which is about to enter the second activated carbon adsorber 10. Preferably, the temperature sensor adopts a contact temperature sensor, and comprises a couple, a resistor and other temperature sensing devices, the temperature controller is a single chip microcomputer, a PLC and other circuit control relays, a PLC control assembly is preferably adopted in the embodiment, the temperature controller also comprises a refrigeration device, and the input end and the output end of the PLC control assembly are respectively electrically connected with the temperature sensor and the refrigeration device. When the contact temperature sensor converts the temperature signal into an electric signal and transmits the electric signal to the PLC control assembly, the PLC control assembly enables the refrigeration equipment to work for cooling, and therefore the temperature of the controlled waste gas reaches and is kept within the set temperature range.

The utility model discloses a solid content automated inspection and adjusting device's theory of operation does:

VOC discharged by the oven is collected through the air suction cover 1, power source is derived from an explosion-proof fan 2, the VOC passes through a filter processor 4 and an active carbon absorber 5, the VOC is conveyed to a combustion furnace 6 through an air pipe 3 for decomposition treatment, a regulating valve 7 is kept in a closed state, decomposed gas enters a temperature control system 9, the temperature of the treated gas is regulated, the gas is secondarily adsorbed by an active carbon absorber 10 and finally returns to the oven, so that a circulation treatment mode can be formed, and finally, if waste gas is required to be discharged, the VOC detection alarm system is used for detecting, and the detection result is qualified for high-altitude discharge.

The above detailed description of the embodiments of the device for processing VOC in laboratory ovens is merely exemplary, and the present invention is not limited to the above described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.

Claims

1. The utility model provides a laboratory oven VOC processing apparatus which characterized in that: comprises an air pipe (3), a combustion furnace (6), a VOC detection alarm system (8), a temperature control system (9) and a second active carbon absorber (10); wherein, one end of the air suction hood (1) is connected with the oven, and the other end is connected with the combustion furnace (6) through the air pipe (3) by the filter processor (4); the combustion furnace (6) is respectively connected with the VOC detection alarm system (8) and the temperature control system (9) through a first regulating valve (7) and a second regulating valve (11) by pipelines; and the temperature control system (9) is connected with the oven through the second activated carbon adsorber (10) by a pipeline.

2. Laboratory oven VOC treatment device according to claim 1, characterized in that: a first activated carbon adsorber (5) is arranged on the air pipe (3) between the filtering processor (4) and the combustion furnace (6).

3. Laboratory oven VOC treatment device according to claim 1, characterized in that: and the wind pipe (3) is provided with a wind speed sensor and a wind speed regulator.

4. Laboratory oven VOC treatment device according to claim 3, characterized in that: the wind speed regulator adopts a propeller type wind speed sensor.

5. Laboratory oven VOC treatment device according to claim 1, characterized in that: an explosion-proof fan (2) is arranged on the air pipe (3) between the air suction hood (1) and the filtering processor (4).

6. Laboratory oven VOC treatment device according to claim 2, characterized in that: the first activated carbon adsorber (5) and the second activated carbon adsorber (10) adopt honeycomb activated carbon adsorbers.

7. Laboratory oven VOC treatment device according to claim 1, characterized in that: the filtering processor (4) is a multi-layer cloth bag filter.

8. Laboratory oven VOC treatment device according to claim 1, characterized in that: the temperature control system (9) is provided with a temperature sensor and a temperature controller.

9. Laboratory oven VOC treatment device according to claim 8, characterized in that: the temperature sensor is a contact temperature sensor.

10. Laboratory oven VOC treatment device according to claim 8, characterized in that: the temperature controller comprises a PLC control assembly and refrigeration equipment, and the input end and the output end of the PLC control assembly are respectively electrically connected with the temperature sensor and the refrigeration equipment.