CN215765106U - PVC gloves production oven exhaust purification processing system - Google Patents

Abstract

The utility model belongs to the technical field of environmental protection, and particularly relates to a waste gas purification treatment system of a PVC glove production oven. The utility model can realize self-sustaining combustion, the thermal efficiency is more than 95 percent, and the removal rate of VOCs is more than 97 percent; high treatment efficiency, no secondary pollution, simple process, simple operation, environmental protection and energy conservation.

Description

PVC gloves production oven exhaust purification processing system

Technical Field

The utility model belongs to the technical field of environmental protection, and particularly relates to a waste gas purification treatment system for a PVC glove production oven.

Background

Under the influence of epidemic situation, the dosage of disposable PVC gloves and medical gloves is increased suddenly, the glove productivity is enlarged, and the pollution caused by the disposable PVC gloves and the medical gloves is also increased sharply.

The PVC glove drying oven waste gas comprises the following main components: plasticizer (dioctyl terephthalate), viscosity reducer (D70), polyvinyl chloride (in small amount), mold release agent and other hydrocarbons (C3-C10). The waste gas component is complex, the waste gas quantity is large (the waste gas quantity of a single workshop is 100000 Nm)³About/h), the exhaust temperature is higher (the exhaust temperature is 160-180 ℃).

The existing treatment process is basically a condensation and static electricity capture process, the treatment efficiency is low, and the emission standard cannot be met; meanwhile, substances in the waste gas are condensed and separated out to be oily, and the electrostatic capturing process is easy to cause fire accidents.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the waste gas purification treatment system for the PVC glove production oven overcomes the defects of the prior art, has high treatment efficiency, no secondary pollution, simple process, simple operation, environmental protection and energy conservation.

The utility model is realized by adopting the following technical scheme:

the waste gas purification treatment system of the PVC glove production oven comprises a collecting pipeline, wherein the collecting pipeline is sequentially connected with a gas-liquid separator, an induced draft fan, a heat accumulating type thermal oxidation furnace and a high-exhaust chimney.

Preferably, the collecting pipeline is provided with a heat insulation sleeve, the exhaust temperature of the waste gas is 160-180 ℃, the collecting pipeline is firstly insulated, the temperature is kept above 140 ℃, organic substances in the waste gas are in a gaseous state as far as possible, and no liquid drops are separated out. Meanwhile, the gas-liquid separator is arranged at the front part of the system, so that a small amount of liquid drops in the waste gas can be removed, and good gas inlet conditions can be provided for a subsequent system.

Preferably, a flame arrester is arranged between the gas-liquid separator and the induced draft fan, and the flame arrester is arranged, so that when the system is in fire accident, the flame can be prevented from being burnt back, and the production equipment can be prevented from being damaged; the burning-resistant time of the flame arrester is more than or equal to 3 hours.

Preferably, the regenerative thermal oxidation furnace comprises a combustion chamber and a plurality of regenerative beds, wherein the plurality of regenerative beds are respectively provided with a high-performance compact ceramic layer, so that energy released by gas in the oxidation reaction process can be fully stored (the thermal efficiency reaches more than 95%), and the necessary temperature can be maintained to oxidize waste gas without consuming other fuels.

Preferably, a plurality of burners are provided on the outer wall of the combustion chamber.

Preferably, the induced draft fan is respectively connected with a plurality of heat storage beds of the heat storage type thermal oxidation furnace through pipelines, and the heat storage beds are all connected with the induced draft fan through purging pipelines.

The working principle and the process are as follows:

collecting waste gas of a PVC glove production drying oven into a collecting pipeline under the action of an induced draft fan, removing a small amount of liquid drops in the waste gas through a gas-liquid separator, conveying the waste gas into a heat accumulating type thermal oxidation furnace for treatment, and oxidizing VOCs into generated CO in an environment with the temperature of 800 ℃ for 1-2 seconds₂And H₂And O, discharging the treated waste gas through a high-exhaust chimney to reach the standard.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model can realize self-sustaining combustion, the thermal efficiency is more than 95 percent, and the removal rate of VOCs is more than 97 percent; high treatment efficiency, no secondary pollution, simple process, simple operation, environmental protection and energy conservation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1. a collection pipe; 2. a thermal insulation sleeve; 3. a gas-liquid separator; 4. a flame arrestor; 5. an induced draft fan; 6. a regenerative thermal oxidation furnace; 7. a combustion chamber; 8. a heat storage bed; 9. a burner; 10. a ceramic layer; 11. purging the line; 12. a high exhaust chimney.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, PVC gloves production oven exhaust purification processing system, including collecting tube 1, collecting tube 1 is connected with vapour and liquid separator 3, spark arrester 4, draught fan 5, heat accumulation formula thermal oxidation stove 6 and high exhaust chimney 12 in proper order, all be equipped with insulation cover 2 on collecting tube 1 and the system connection pipeline, heat accumulation formula thermal oxidation stove 6 includes combustion chamber 7 and a plurality of heat accumulation beds 8, combustion control system, automatic control valve and control instrument, be equipped with a plurality of combustors 9 on the outer wall of combustion chamber 7, be full of the fine and close ceramic layer of high performance 10 on a plurality of heat accumulation beds 8, draught fan 5 is connected with a plurality of heat accumulation beds 8 respectively through the pipeline, a plurality of heat accumulation beds 8 are all connected with draught fan 5 through sweeping pipeline 11.

During operation, the waste gas of the PVC glove production oven is collected into the collection pipeline 1 under the action of the draught fan 5, then a small amount of liquid drops in the waste gas are removed through the gas-liquid separator 3, the waste gas is conveyed into the heat accumulation type thermal oxidation furnace 6 for treatment, the retention time is about 1-2 seconds in the environment of 800 ℃, VOCs are oxidized into raw CO₂And H₂And O, discharging the treated waste gas through a high-exhaust chimney 12 to reach the standard. The concentration of VOCs in the waste gas reaches 1500mg/Nm³When the combustion chamber is used, self-sustaining combustion can be realized; the removal rate of VOCs reaches more than 97 percent, and the concentration of the gas discharged from the chimney is stably maintained at 50mg/m for a long time³The following.

Of course, the foregoing is only a preferred embodiment of the utility model and should not be taken as limiting the scope of the embodiments of the utility model. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.

Claims (1)

1. The utility model provides a PVC gloves production oven exhaust purification processing system which characterized in that: the device comprises a collecting pipeline (1), wherein the collecting pipeline (1) is sequentially connected with a gas-liquid separator (3), an induced draft fan (5), a heat accumulating type thermal oxidation furnace (6) and a high-exhaust chimney (12); be equipped with insulation support (2) on collecting pipeline (1), be equipped with spark arrester (4) between vapour and liquid separator (3) and draught fan (5), heat accumulation formula thermal oxidation stove (6) are including combustion chamber (7) and a plurality of heat accumulation bed (8), all be equipped with ceramic layer (10) on a plurality of heat accumulation bed (8), be equipped with a plurality of combustors (9) on the outer wall of combustion chamber (7), draught fan (5) are connected with a plurality of heat accumulation bed (8) respectively through the pipeline, a plurality of heat accumulation bed (8) are all connected with draught fan (5) through sweeping pipeline (11).

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