阅读说明：本技术 一种改性塑料生产过程中废气排放及治理的优化工艺 (Optimization process for exhaust emission and treatment in production process of modified plastics ) 是由 陶登源 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种改性塑料生产过程中废气排放及治理的优化工艺,所述工艺流程如下：废气收集→喷淋模块→静电除油→风机传送→生物过滤(活性炭)→达标排放。在该过程中有机废气经过收集系统进行收集后,进入喷淋洗涤模块,经过循环水喷淋降低温度,同时废气中大部分颗粒物和高沸点污染物被去除,废气出洗涤模块后,进入静电除油设备,进一步去除其中颗粒物和重烃物,随即被送至生物装置,进入预洗池进行进一步降温和增湿,最后进入生物滤池,进行过滤,在滤层中微生物对有机废气中污染物质进行吸附降解,将污染物分解成CO-(2)、水和其他无机物,从而完成废气的整体治理。所述工艺处理塑料生产中所产生废气效果较好,整体达标度高。(The invention discloses an optimized process for exhaust emission and treatment in the production process of modified plastics, which comprises the following steps: waste gas collection → spraying module → electrostatic oil removal → blower transmission → biological filtration (active carbon) → standard discharge. In the process, organic waste gas is collected by a collecting system, enters a spraying and washing module, is sprayed by circulating water to reduce the temperature, most of particulate matters and high-boiling-point pollutants in the waste gas are removed, the waste gas is discharged from the washing module and enters electrostatic oil removal equipment, particulate matters and heavy hydrocarbon are further removed, the waste gas is immediately sent to a biological device, enters a prewashing tank for further cooling and humidifying, finally enters a biological filter for filtering, microorganisms in a filter layer adsorb and degrade the pollutants in the organic waste gas to decompose the pollutants into CO 2 Water and other inorganic matters, thereby completing the overall treatment of the waste gas. The process has good effect of treating waste gas generated in plastic production, and the whole scale is high.)

1. An optimization process for exhaust emission and treatment in the production process of modified plastics is characterized by comprising the following process flows: waste gas collection → spraying module → electrostatic oil removal → blower transmission → biological filtration (active carbon) → standard discharge.

2. The optimized process for exhaust emission and treatment in the production process of modified plastics, according to claim 1, is characterized in that the specific treatment process comprises the following steps:

(1) collecting: collecting the organic waste gas by a collecting system;

(2) washing: the collected waste gas enters a spraying and washing module, and the temperature is reduced by circulating water spraying, so that most of particulate matters and high-boiling-point pollutants in the waste gas are removed;

(3) electrostatic degreasing: after the waste gas is discharged from the washing module, the waste gas enters electrostatic oil removal equipment to further remove particulate matters and heavy hydrocarbon matters in the waste gas;

(4) conveying by a fan: the waste gas from which the large particulate matters and the heavy hydrocarbon matters are removed enters a prewashing tank through a fan to be subjected to further cooling and humidifying, and then is conveyed to a biological device;

(5) biological filtration: the treated waste gas enters a biological filter for filtering, microorganisms in a filter layer adsorb and degrade pollutants in the organic waste gas to decompose the pollutants into CO₂Water and other inorganic materials;

(6) discharging after reaching the standard: and the waste gas is discharged after being treated and detected to reach the standard.

3. The process of claim 1, wherein the concentration of the waste gas produced in the modified plastic industry is not high, so that the waste gas is treated by a biological method, and the whole treatment cost is reduced and the treatment benefit is improved by material adsorption.

4. The optimized process for exhaust emission and treatment in the production process of modified plastics according to claim 1, wherein the key point of the process is to remove VOCs in the melting and cooling processes of the extruder in the production process of modified plastics.

5. The optimized process for exhaust emission and treatment in the production process of modified plastics, according to claim 1, is characterized in that the spraying process can reduce the temperature of the exhaust gas and meet the air intake requirement of biological treatment; in addition, most of heavy hydrocarbon, acetone, dichloromethane, acrylic acid and the like in the gas phase are converted into liquid, so that the pollution load is reduced.

6. The optimized process for exhaust emission and treatment in the production process of modified plastics as claimed in claim 1, wherein the water in the exhaust gas is removed as much as possible before the spray tower outlet gas enters the oil removing device.

7. The optimized process for exhaust emission and treatment in the production process of modified plastics as claimed in claim 1, wherein said biological filter layer is a microbial filler layer, characterized by being moist, porous and full of activity, and can be replaced by activated carbon, and the process is used for treating exhaust gas mainly containing particulate matter, heavy hydrocarbons, non-methane total hydrocarbons, aldehydes, ketones, organic acids, etc.

Technical Field

The invention belongs to the field of production and emission of modified plastics, and particularly relates to an optimization process for exhaust emission and treatment in a modified plastic production process.

Background

The modified plastic is a common industrial product which changes the original performance and improves one or more aspects of the performance by adding one or more other substances into the plastic resin, thereby expanding the application range of the modified plastic, the application range is very wide and is closely related to the life of common people, in the production process, especially in the melting process and the cooling process of an extruder, a large amount of VOCs can be generated, although the waste gas components generated in the modification process of different base material plastics are different, no matter polypropylene PP, polyvinyl chloride PVC or polystyrene HIPS, the produced waste gas mainly contains non-methane total hydrocarbon, heavy hydrocarbon and particulate matter, so based on the common waste gas components, the optimized setting can play a better treatment effect on the waste gas emission and the treatment process in the production process of the modified plastic, further realize energy conservation and emission reduction, the requirement of building an environment-friendly society.

Disclosure of Invention

The invention aims to provide an optimized process for exhaust emission and treatment in the production process of modified plastics, a systematic process is adopted to reduce the process cost and improve the exhaust emission effect, and the purpose of the invention can be realized by the following technical scheme:

(1) collecting: collecting the organic waste gas by a collecting system;

(2) washing: the collected waste gas enters a spraying and washing module, and the temperature is reduced by circulating water spraying, so that most of particulate matters and high-boiling-point pollutants in the waste gas are removed;

(3) electrostatic degreasing: after the waste gas is discharged from the washing module, the waste gas enters electrostatic oil removal equipment to further remove particulate matters and heavy hydrocarbon matters in the waste gas;

(4) conveying by a fan: the waste gas from which the large particulate matters and the heavy hydrocarbon matters are removed enters a prewashing tank through a fan to be subjected to further cooling and humidifying, and then is conveyed to a biological device;

(5) biological filtration: the treated waste gas enters a biological filter for filtering, microorganisms in a filter layer adsorb and degrade pollutants in the organic waste gas to decompose the pollutants into CO₂Water and other inorganic materials;

(6) discharging after reaching the standard: the waste gas is discharged after being treated and detected to reach the standard;

the invention has the beneficial effects that: can meet the waste gas treatment requirements of various modified plastic production lines, decomposes pollutants into nontoxic and harmless simple inorganic substances such as CO2, water and the like, and has good treatment effect.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Organic waste gasAfter being collected by a collection system, the waste gas enters a spraying and washing module, the temperature is reduced by spraying circulating water, most of particulate matters and high-boiling-point pollutants in the waste gas are removed, the waste gas enters electrostatic oil removal equipment after exiting the washing module, particulate matters and heavy hydrocarbon matters are further removed, the waste gas is immediately conveyed to a biological device, enters a prewashing tank for further cooling and humidifying, finally enters a biological filter tank for filtering, microorganisms in a filter layer adsorb and degrade the pollutants in the organic waste gas to decompose the pollutants into CO₂Water and other non-toxic harmless inorganic substances:

(1) collecting: collecting the produced organic waste gas through a collecting system;

(2) washing: the collected waste gas enters a spraying and washing module, and the temperature is reduced by circulating water spraying, so that most of particulate matters and high-boiling-point pollutants in the waste gas are removed;

(3) electrostatic degreasing: after the waste gas is discharged from the washing module, the waste gas enters electrostatic oil removal equipment to further remove particulate matters and heavy hydrocarbon matters in the waste gas;

(4) conveying by a fan: the waste gas from which the large particulate matters and the heavy hydrocarbon matters are removed enters a prewashing tank through a fan to be subjected to further cooling and humidifying, and then is conveyed to a biological device;

(5) biological filtration: the treated waste gas enters a biological filter for filtering, microorganisms in a filter layer adsorb and degrade pollutants in the organic waste gas to decompose the pollutants into CO₂Water and other inorganic materials;

(6) discharging after reaching the standard: and the waste gas is discharged after being treated and detected to reach the standard.

Example 2

Organic waste gas is collected by a collection system, enters a spray washing module, is sprayed by circulating water to reduce the temperature, and meanwhile, most of particulate matters and high-boiling-point pollutants in the waste gas are removed, the waste gas enters electrostatic oil removal equipment after exiting the washing module, particulate matters and heavy hydrocarbon matters are further removed, and then the waste gas is sent to a biological device, enters a prewashing tank for further cooling and humidifying, finally enters a biological filter for filtering, microorganisms in a filter layer adsorb and degrade the pollutants in the organic waste gas, and the pollutants are adsorbed and degraded by the microorganisms in the filter layerDecomposition into CO₂Water and other non-toxic harmless inorganic substances:

(1) collecting: collecting the produced organic waste gas through a collecting system;

(2) washing: the collected waste gas enters a spraying and washing module, and the temperature is reduced by circulating water spraying, so that most of particulate matters and high-boiling-point pollutants in the waste gas are removed;

(3) electrostatic degreasing: after the waste gas is discharged from the washing module, the waste gas enters electrostatic oil removal equipment to further remove particulate matters and heavy hydrocarbon matters in the waste gas;

(4) conveying by a fan: the waste gas from which the large particulate matters and the heavy hydrocarbon matters are removed enters a prewashing tank through a fan to be subjected to further cooling and humidifying, and then is conveyed to a biological device;

(5) filtering with activated carbon: the treated waste gas enters a filter tank, an activated carbon layer is used for filtering, microorganisms in the filter layer adsorb and degrade pollutants in the organic waste gas, and the pollutants are decomposed into CO₂Water and other inorganic materials;

(6) discharging after reaching the standard: and the waste gas is discharged after being treated and detected to reach the standard.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.