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Benzene and methanol alkylation production aromatics technology to fill the domestic gap
Recently, at the China Petroleum Refining and Chemical Industry Major Independent Innovation Scientific and Technological Achievements Promotion Conference held in Lanzhou, PetroChina Urumqi Petrochemical Branch released the first time benzene and methanol alkylation production aromatic hydrocarbon technology
.
This technology is to produce toluene and xylene by alkylation of benzene
and methanol.
This technology solves three major problems: first, the catalyst preparation method, through in-depth study of the reaction mechanism, diffusion and structure-activity relationship of benzene and methanol on zeolite catalysts, the basis for guiding the design of benzene and methanol alkylation catalysts with high activity and selectivity is obtained, and the production method
of benzene and methanol alkylation catalysts is mastered.
The second is to solve the problem of reaction engineering, develop a heat extraction method of intermediate multi-stage methanol cold radical material, effectively regulate the bed temperature rise, and solve the strong exothermic effect
in the process of alkylation of benzene and methanol.
The third is to use alkylation catalyst and deacidification catalyst gradation technology to inhibit the formation of acidic substances in the reaction process and make the by-product water meet the discharge requirements of
the device.
