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At present, there is no precedent for the use of new types of reaction additives in the domestic PTA industry. The international major PTA patenters are also very familiar with this process technology and are in strict secrecy. On the other hand, the use of oxidation catalysts in PTA plants is an important factor affecting the economic and technical level of the entire plant. For chemical plant PTA old devices, the existing measures alone are not enough to reduce consumption and improve product competitiveness. For this reason, when the group company establishes the research and development project, the company undertakes the next project, and the chemical plant and the research institute jointly carry out research and development. Through the joint efforts of the two companies, the U-815 PTA oxidation additive was successfully developed. Theoretically, this additive will give full play to the effectiveness of PTA oxidation catalysts, reduce catalyst consumption and improve product quality; at the same time reduce the consumption of acetic acid solvent; also can reduce the content of bromine in the system, thereby reducing corrosion and prolonging the service life of the device. It will play a role in improving the overall economic and technical level of PTA installations. U-815 conducted a short-term use test at the PTA No. 2 plant of chemical plants last year, which did not produce adverse effects on process stability, product quality, and other indicators, laying the foundation for further experiments. This year, the company decided to conduct a half-year industrial trial trial at a chemical plant PTA. According to the experimental plan, the chemical plant will gradually increase the U-815 input concentration to the target value, collect relevant data at the same period, track and test the acetic acid consumption and bromine content, compare it with the pre-investment, and make further deployment based on the experimental data. Promote the use of industrialization as soon as possible.
Yangzi Petrochemical's PTA Plant Trials New Additives
Recently, U-815, a new catalyst-reactive additive, began commercial trials at a PTA plant at Yangzi Petrochemical. The additive, as a research and development project of Sinopec Group Company, is a completely new scientific research achievement with independent intellectual property rights and filling the gaps in the industry.