Multilayer MaterialExhaust Gas Treatment Solutions

(physical works cases)

Industry Introduction

Multilayer thin film materials, is a layer of materials with a thickness of only nanometres, then layered with one or more other thin layers of materials with different properties, finally forming a multilayer solid coating. Due to the different electrical, magnetic and chemical properties of each layer, multilayer thin film materials will have some exotic properties. At present, this new material with simple manufacturing process is receiving attention from various countries, and has entered the commercialisation stage from laboratory research, which can be widely used in fields such as anti-corrosion coatings, fuel cells and biomedical transplants.

Pollution hazards

Multilayer film new materials in the fusion of raw materials in the production process will produce a certain amount of organic waste gas pollution, the production of common functional special plastic film, using raw materials such as: EVOH high barrier plastic particles (ethylene / vinyl alcohol copolymer), PE plastic particles, PA plastic particles, PP plastic particles, Tie plastic particles, EVA plastic particles in the heating and melting, casting film, multilayer co-extruded in the process of volatile organic compounds (non-methoxylated organic compounds). Generate volatile organic compounds (non-methane hydrocarbons, ammonia).

Overview of the multilayer film exhaust treatment programme

For half of the multilayer film exhaust VOCs treatment technology, now in line with environmental emission requirements, and play a role in reducing costs and efficiency of the treatment technology, is to use the reduction of wind concentration + combustion method of treatment technology is more economical and energy-saving. Suggested use: wet jet washing (multi-pipe) + dry filter + wind enrichment + catalytic combustion combination of governance, governance can meet the emission requirements of standards!

Multi-layer film exhaust treatment process

Wet jet washing (multi-tube) + dry filtration + activated carbon adsorption and concentration + catalytic combustion process (integrated system) process treatment. Organic waste gas is collected through the pipeline, and enters the pretreatment wet jet tower to remove paint dew, acidity and particulate matter purification. After purification, the gas is introduced into the dry filter to remove particles and harmful substances on the activated carbon adsorption, and the organic waste gas is then sent to the activated carbon adsorption bed device, and the VOCs components in the waste gas are absorbed by the activated carbon and then discharged to the atmosphere in compliance with the standards. When the activated carbon adsorption bed is saturated by electric heating high temperature (80-100 ℃ C) desorption of VOCs substances, desorption of high concentrations of organic waste gas directly into the catalytic combustion co, through the accelerated oxidation of high concentrations of waste gas by precious metals, in ( 250-350 ℃) high temperature purification and oxidation of harmless carbon dioxide (CO2) and water vapour (H20) and meet the standards of emission into the atmosphere.

Other treatment technology programmes

Low concentration and small air volume of multi-layer film exhaust gas can be used: spray tower, uv photolysis purifier, activated carbon adsorption and other single or multiple combinations of processes for treatment;

High concentration of small air volume multi-layer film exhaust gas can be used: pretreatment + zeolite molecular sieve + catalytic combustion, pretreatment + zeolite molecular sieve + RTO thermal storage incinerator, a single catalytic combustion device or a single RTO thermal storage incinerator and so on;

High concentration and large air volume of multi-layer film exhaust gas can be used: pretreatment + zeolite rotor concentration + catalytic combustion or pretreatment + zeolite rotor concentration + RTO thermal storage incinerator and so on.