Desulfurization method for rectified MTBE (methyl tertiary butyl ethers)

Abstract

The invention discloses a desulfurization method for rectified MTBE (methyl tertiary butyl ethers), which belongs to a desulfurization method for MTBE by using a desulfurization tower. The method comprises the following steps that: crude MTBE comprising 98.45-98.55% of MTBE, 0.37-0.39% of butene, 0.38-0.40% of carbon-8, 0.39-0.41% of butyl alcohol and 0.02-0.04% of sulfur-containing compounds are conveyed to a desulfurization tower; a gas phase at the top of the tower, after being condensed by a condenser of the desulfurization tower, enters a reflux tank of the desulfurization tower; condensed fluid is pressurized through a pump, then a part of the pressurized condensed fluid is extracted out and used as fine MTBE, and the other part of the pressurized condensed fluid is conveyed to the top of the tower and used as a reflux; and heavy components at the bottom of the tower are extracted intermittently, are pressurized through a pump, and cooled to 38-42 DEG C, and then the obtained product is conveyed to a drum area. Compared with the prior art, the desulfurization method disclosed by the invention has the following beneficial effects of relatively simple technological process, low investment, considerable yield, low energy consumption, small waste discharge; and the method has thorough desulfurization effect, the sulfur content of the finally produced fine MTBE is below 10ppm, the pure MTBE content is 99.1-99.3%, and the produced heavy components can be used as byproducts, thereby increasing both production and income.

Description

technical field [0001] The invention belongs to a desulfurization method for rectifying methyl tert-butyl ether, in particular to a desulfurization method for rectifying methyl tert-butyl ether with a desulfurization tower. Background technique [0002] Methyl tert-butyl ether is a colorless, transparent, high-octane liquid with an ether-like odor. It is an ideal blending component for the production of lead-free, high-octane, and oxygenated gasoline. It has been used as a gasoline additive Commonly used worldwide. [0003] At present, the desulfurization of methyl tert-butyl ether is mainly carried out in the desulfurization tower, but the general desulfurization process only limits the temperature of each device in the desulfurization tower. Only the temperature limit must make the operating temperature reach a certain high temperature and maintain a high temperature High energy consumption increases production costs. Contents of the invention [0004] In order to solv...

AI Technical Summary

Problems solved by technology

[0003] At present, the desulfurization of methyl tert-butyl ether is mainly carried out in the desulfurization tower, but the general desulfurization process only limits the temperature of each device in the desulfurization tower. Only the temperature limit must make the operating temperature reach a certain high temperature and maintain a high temperature High consumption of energy and increased production costs

Images