Yangzi Petrochemical pioneered the industrialization of toluene methylation technology

China Coatings Network
News: Yangzi Petrochemical successfully operated the world's only 200,000 tons / year toluene methylated xylene industrial demonstration device, and declared 11 patents, of which 3 have been authorized. A complete intellectual property protection network covering zeolite materials, catalysts and reaction processes has been formed, connecting petrochemicals and coal chemicals. Toluene one-way conversion rate, xylene selectivity and toluene conversion rate have achieved and better than the development target, and won the first prize of Sinopec Group's 2014 scientific and technological progress.
xylene is an important basic organic chemical raw materials, widely used in the production of polyester, chemical fiber and other products, and the development of the national economy and people's food and clothing are closely related, in recent years, strong demand, rapid growth, heavy dependence on imports.
At present, xylene is obtained mainly through catalytic reform and subsequent catalytic transformation and separation of python oil, which is one of the main target products of petrochemical industry, and the scale of development is seriously subject to the basic national conditions of the relative lack of petroleum resources in China.
Toluene methylation is the use of toluene and methanol as raw materials, through toluene methylation technology, to create into the target product - xylene conditions, improve the efficiency of the production of aromatics and xylene yield, is a "molecular economy" of xylene production technology. The successful development and application of this technology can not only alleviate the competition between aromatics production and ethylene production, but also effectively expand the raw material sources of aromatics production.
Sinopec gathers the advantages of Yangzi Petrochemical, Shanghai Petrochemical Research Institute, Luoyang Engineering Company, effectively integrates the catalyst development, process research and engineering design and other multidisciplinary resources, has completed the industrial sideline test and 200,000 tons / year process package development and design work, has successfully developed High-performance toluene methylation catalyst, multi-bed reaction process, wastewater treatment process, thermal joint and low temperature heat utilization process, etc., applied for domestic and foreign patents covering catalytic materials, catalysts and process technology, the first in the world to achieve toluene methylation technology industrialization technology.
construction of the plant was started in March 2012, completed on October 15, 2012, and a successful feeding drive in December produced qualified xylene products.
The device is the world's only toluene methanol methylation industrial equipment in operation, Yangzi Petrochemical and other participating in the development of three units of technical personnel, in the process of driving the device and after, in-depth site comparison of design data and industrial operation of actual parameters changes, tracking summary, and the special technology obtained for generalization, to the national patent authorities to declare, to obtain technical protection.
The success of the industrialization of this project, the successful combination of coal chemical industry and petrochemical industry, marks Sinopec has mastered a core technology with independent intellectual property rights, for the future production of aromatic devices and aromatics production process raw materials and product restructuring, to achieve the diversification of aromatics production raw materials, providing a strong technical support, has important economic and strategic significance.