Major breakthroughs have been made in the large-scale development of complete sets of styrene technologies in my country

The picture shows the scene of the scientific and technological achievement evaluation meeting of "300,000 tons/year industrial application of styrene complete technology"

On July 10, the "300,000 tons/year styrene complete technology industrial application" project completed by Changzhou Ruihua Chemical Engineering Technology .

After the review, the expert group believes that the main innovations and characteristics of the project technology are the development of low-energy-consumption liquid-phase alkylation of ethylbenzene synthesis and high vacuum, low water ratio ethylbenzene adiabatic dehydrogenation reaction process, designed a unique ethylbenzene The dehydrogenation high-temperature system treatment plan has formed a complete set of new technologies for 300,000 tons/year of styrene; key equipment such as dehydrogenation reactor, ethylbenzene superheater and intermediate heat exchanger have been designed to increase styrene production capacity by 10% and extend the equipment During the operation period, the device runs stably; the device achieves material consumption of 0555t (benzene + ethylene)/t styrene and energy consumption of 209kg standard oil/t styrene, which is 21% lower than the advanced indicators of the national standard GB32053-2015; The Changzhou City Product Quality Supervision and Inspection Institute has tested that the purity of styrene reaches 99%, which is better than the 98% index of the national standard GB/T3915-2011 premium produ.

It has been used by users such as Xinyang Technology Group .

According to Xu Zhigang, chairman of Changzhou Ruihua Chemical, the industrial application of the 300,000-ton/year styrene complete technology was independently developed by the compa.

Xu Zhigang told reporters that at present, the total energy consumption of domestic styrene plants is generally about 280kg standard oil/t styrene, and the total material consumption is generally 075t (benzene + ethylene)/t styre.

In recent years, with the advancement of science and technology and the rapid development of all walks of life, the demand for polystyrene resin is increasing, which has contributed to the sharp increase in the demand for styre.

Xu Zhigang said that before the successful development of this complete set of technology, all styrene plants with an annual output of 300,000 tons/year and above in China were built with foreign styrene process technology, and foreign technology was in a monopoly position, and styrene built with domestic technology was us.

The picture shows the exterior of the 300,000-ton styrene complete technology project

In order to maintain the continuity of styrene technology research and development and seek technological progress of large-scale equipment in this field, Ruihua Company proposed to develop advanced large-scale styrene technology as a long-term research task for the compa.

Xu Zhigang said that the industrial application of 300,000 tons/year styrene complete technology has broad prospects, especially in Southeast Asia, where styrene resources are in short supply, and the promotion of styrene complete technology abroad also has broad prospec.

Group photo of experts and relevant leaders of organizational units and enterprises at the review meeting

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Styrene monomer (SM) is one of the important organic chemical raw materials, mainly used in the production of polystyrene resin (PS), expanded polystyrene (EPS), acrylonitrile-butadiene-styrene terpolymer (ABS) resin, e.

This complete set of styrene technology is mainly used in the alkylation of olefins and aromatic hydrocarbons and the dehydrogenation of saturated hydrocarbo.