1ST Line new Polymer coating successfully solved high temperature corrosion resistance problem of rotary kiln

Recently, application of new type polymer coating successfully solved high temperature alumina rotary kiln outer wall surface corrosion problem in the high temperature corrosion field. This coating technology has excellent adhesion and corrosion resistance, can be applied in the rotary kiln and the sink surface, especially quick repair corrosion damage of weld parts, greatly improve  rotary kiln corrosion resistance.

The high temperature alumina rotary kiln is made from rolled steel sheet and welded automatically. The cooling device of rotary kiln is circulating cooling water, which is directly sprayed on the surface of kiln body with the temperature over 200 degrees. Long-term spraying operation results in rusting corrosion on the surface of kiln body, thickening rust layer, reduction heat exchange efficiency, thinning kiln walls and shortening equipment service , causing hidden trouble to safety production. However, traditional repair process has no effective solution to deal with this problem, so the whole equipment can only be replaced, which increases maintenance cost.

The successful application of this technology provide a good guarantee for high temperature alumina high quality production provides a good guarantee. So 1st line anti-corrosion technology under high temperature further enhance. The superiority and professional of 1st line polymer technology has been well known by various industrial enterprises, and provide service many years for chemical, oil, manufacturing, rubber, etc an-ti corrosion field. 1st line will continue to carry out product research and development through our own scientific research strength, and integrate the world’s cutting-edge technologies to benefit domestic industry long-term development.

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1st line provide advanced solution for VOCs waste gas treatment

1st line recently launched advanced VOCs emission technology equipment in China, which provide advanced economic solutions for large-scale chemical plant to deal with coming stringent   VOCs emission standards, so that promote industry sustainable and green development.

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For a long time, chlorine hydrocarbon production equipment will produce gas containing VOCs in the production and shutdown process, in which containing a large number of chlorine gas, dimethyl ether, chloride methane, methanol and other pollutants , causes huge impact on the environment. With constant improvement of national requirements on such gases, traditional combustion emissions technology already cannot satisfy new emission standard, therefore related industries starts to carry out process upgrading and transformation. In fact, due to complex composition and high concentration of such gas, there is no mature and effective treatment technology in China.

 

For the above, combined with characteristics of big emissions and complicate composition in such gas, 1st line engineering technicians and the number of users of such problems to be settled urgently for further technology exchanges with industry leading research institution in the United States jointly work out a set of comprehensive integrated management system. The main purpose of this system is to separate vapors of volatile organic compounds from effluent flow from the process equipment (reactor) to avoid contamination and to recycle solvents for reuse or treatment. This system is based on the principle of low temperature condensation and uses liquid nitrogen as cold source. The used nitrogen is vaporized in the device and can be returned to customer pipe network in the form of gas for recycling.

 

This system has fast response to the change of peak flow, has a good resistance to thermal stress, easy to recycle VOCs, high efficiency and low consumption, can recycle liquid nitrogen, safety etc benefits. Meanwhile this system is convenient for installation, which is a integrate rapid installation system, can be put into use after complete installation, ensure production continuity. This system can realize fully automated operation, through supervision system and telemetry system in the monitoring system, ensure effective emissions handling. Up to now, this system has no failure in worldwide 250 applications, which ensures factory emission requirement.

 

In recent years, with domestic increasing environmental pressure, several problems such as air pollution, water pollution and noise pollution increasingly restricted enterprise development, so many petrochemical, manufacturing high pollution enterprise production reduction or shut down. 1st line has always paid more attention to environmental protection technology development, and has taken the lead in introducing various pollution treatment technologies, such as oil sludge reduction, dust removal, water cavitation and etc. In the future, 1st line will gradually expand the comprehensive business of VOCs waste gas treatment, promote establishment and improvement of industrial waste gas emission control system in China.