Electronic Factory PrintingExhaust Gas Treatment Solutions

(physical works cases)

Industry Introduction

Electronic product printing technology is mainly involved in the field for the keyboard printing, mobile phone shell printing, circuit board printing, circuit board printing, even including plastic plastic and other products printing. Electronic printing various substrates on the production of electronic products. With a certain graphic printing on the material on the ordinary printing equipment or low-value equipment, such as screen printing, aniline printing, photogravure, lithography and inkjet printing can be produced, the electrical function of the electronic or optical ink deposited on the substrate of printed electronic products and organic electronics or plastic electronic products; used one or more kinds of inks made of carbon-based compounds. Printed electronics can be made from any soluble material, including organic semiconductors, inorganic semiconductors, metal conductors, nanoparticles and nanotubes.

Pollution Hazards

The raw inks used in the printing process of electronics are mixed with other organic materials to produce organic solvents such as ethanol, isopropanol, butanol, propanol, butanone, ethyl acetate, butyl acetate, toluene, xylene and other organic solvents. Although the vast majority of these organic solvents will be eliminated after drying, but the residual part will still cause harm to the human body. The hazards of printing inks on the human body include: affecting the metabolism of growth hormone; directly affecting bone growth; indirectly affecting bone growth; and elevated lead levels can cause high blood pressure.

Overview of Electronic Product Printing Treatment Programme

For the electronic product printing industry VOCs treatment technology, now in line with environmental emission requirements, and play a cost-effective treatment technology, is the use of combustion method of treatment technology is more economical and energy-saving effective. The use of dry filters + reduced wind concentration + catalytic combustion combination of governance, governance can meet the emission requirements after the standard!

Electronic product printing treatment process

This device process is: first through the three-stage dry filter to remove 99% of the particles in the dusty gas, so that the organic matter is completely clean, but also to increase the operating efficiency and service life of the late equipment. Separation of organic gases into the zeolite turn concentration or molecular sieve adsorption concentration of organic waste gas low concentration into high concentration, large air volume conversion of small air volume to reduce the principle of concentration, when the adsorption concentration reaches the required spontaneous combustion requirements, and finally through electric heating to warm up the high temperature of 100-180 degrees Celsius gas, desorption regeneration, desorption of down the use of catalytic furnace of the high concentration of catalytic furnace, with the help of catalysts to make the organic waste gas in the lower starting temperature for flameless combustion, so that the late equipment operating efficiency and service life. With the help of catalyst, the organic waste gas will be flamelessly burned under lower ignition temperature, so that the organic waste gas will be decomposed into non-toxic carbon dioxide and water vapour.

Other treatment process technology

Low concentration and small air volume of electronic printing waste 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 of electronic printing waste 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 electronic factory printing waste gas can be used: pretreatment + zeolite rotor concentration + catalytic combustion or pretreatment + zeolite rotor concentration + RTO thermal storage incinerator and so on.