< p > > a href= "http://www.pmae.cn/news/index_c.asp" > Lixin dyeing and finishing machinery < /a > (Shenzhen) Co., Ltd. independently developed SYN 8 high temperature air flow dyeing machine in Shenzhen to pass the appraisal of scientific and technological achievements of China Textile Industry Federation.

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Gao Yong, vice president of the China Textile Industry Federation, led a delegation of experts from Donghua University vice president and academician Yu Jianyong of the Chinese Academy of engineering to the Shenzhen base of Heng Tian Li Xin, and listened to the < a href= "http://www.pmae.cn/news/ index_c.asp" technical report < /a > of the development units and production and use units, inspecting the R & D center, production workshop and application center of Li Xin dyeing and finishing.

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< p > in the unique application center of Li Xin dyeing and finishing, the main design of the product is < a href= "http://www.pmae.cn/news/index_c.asp >" Xu Daming < /a ".

The product appraisal expert group expressed its appreciation for the various functions of the SYN 8 high temperature air stream dyeing machine.

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< p > the expert appraisal committee, headed by academician Yu Jianyong, after careful discussion and deliberation, agreed that Li Xin dyeing and finishing innovating and developing the technology of single pipe independent air supply, significantly reducing energy consumption, effectively solving the dyeing tube difference, and developing a new spraying device for dyeing liquid, which improves the flexibility of use, maintenance and convenience, and improves the uniformity and quality and efficiency of dyeing.

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< p > developed a multi-directional automatic folding fabric structure and automatic wool collector, which significantly reduced the intensity of operation and improved the working efficiency. A new type of thermal circulation system was developed, which solved the problem of temperature difference in cylinder and applied to wider fabric. The intelligent dynamic control technology of dyeing process was developed, which was equipped with automatic pilot and integrated intelligent washing function to achieve green, efficient, high-quality dyeing.

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Members of the expert group agree that the SYN 8 high temperature air flow dyeing machine has a new structure, advanced technology, high efficiency and flexibility, and has made significant breakthroughs in energy conservation and emission reduction. The whole machine level has reached the international advanced level, and it is suggested that further efforts should be made to promote the application and popularization in the future. P

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< p > related links: < /p >

< p > aromatic hydrocarbon is a general term for hydrocarbons with benzene ring structure. The simplest and most important ones are benzene, toluene and xylene (including three isomers of p-xylene, o-xylene and o-xylene). They are commonly referred to as BTX aromatics or light aromatics and are often referred to as aromatic hydrocarbons.

Aromatics have higher octane number, and their maximum use is benzene as a high octane gasoline component.

According to statistics, in the total number of about 8 million known organic compounds, benzene ring compounds account for about 30%. Therefore, in the chemical industry, BTX aromatics belong to the first grade basic organic materials, and are important raw materials for the production of synthetic materials such as fiber, resin, rubber, and organic chemical intermediates and products.

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< p > aromatics play an important role in the national economy and petrochemical industry.

When BTX aromatics were used as basic organic materials, the demand for different products varied greatly. Benzene and para xylene (PX) were the two largest varieties. In 2012, global consumption reached 43.5Mt and 33.0Mt respectively, and the two accounted for 80% of total BTX aromatics consumption, much higher than that of one generation.

Therefore, aromatics production mainly involves three kinds of technologies, including aromatics generation, inter aromatic conversion and aromatic separation.

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< p > based on the front edge of modern BTX aromatics technology, and taking full advantage of the close combination of scientific research, design and production, Sinopec has successfully developed various unit technologies of aromatics combined with independent intellectual property rights.

The new aromatics unit with annual production capacity of 600kt PX has been developed independently by Hainan refining and chemical industry. Meanwhile, the operation pressure of xylene fractionating tower and thermal combined system has been improved, so as to carry out energy saving technologies such as recovery of low temperature steam and low temperature hot water power generation.

The device has been completed and checked and calibrated. The results show that the energy consumption of the combined plant is significantly lower than that of the existing technologies, which is of great significance to the development of China's aromatics industry and will have an important impact.

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