Abstract:

MTBE/butene-1 plant uses three-stage fixed beds and catalytic distillation technology to produce MTBE products, and butene-1 is produced by ultra-precision distillation technology. Corrosion leakage repeatedly occurred in the methanol recovery system since the plant was put into operation, seriously affecting the long-term operation of the plant. At the same time, the corrosion-induced rust residue entered the methanol extraction tower with the extraction water, causing increased tower pressure difference and poorer water washing effect. By taking measures such as strictly controlling the quality of raw materials, installing acid removal device in the methanol recovery system, injecting alkali for neutralization, and upgrading the material of equipment and pipelines, the corrosion leakage problem was solved.

Key words: MTBE/1-butene plant, corrosion, prevention measure