Azeotropic rectifying tower device capable of saving energy, reducing consumption and being used for producing MTBE and adjusting method

Abstract

The invention discloses an azeotropic rectifying tower device capable of saving energy, reducing consumption and being used for producing MTBE. The azeotropic rectifying tower device comprises an azeotropic rectifying tower. The azeotropic rectifying tower comprises a tower top, a tower bottom and a tower kettle. The tower top is connected with a reflux drum, the reflux drum is connected with a reflux pump, the reflux pump is connected with the azeotropic rectifying tower through a reflux pipeline, a tower body is connected with a filter, the filter is connected with a raw material inlet, the tower kettle is also connected with the filter, and the filter is further connected with an MTBE outlet. By designing the reflux pump, the reflux quantity or the reflux ratio of the tower top is controlled precisely, and accordingly energy consumption is reduced. By designing a heater and a condenser, the temperature of a sensitive point at the tower bottom of the azeotropic rectifying tower is precisely controlled, the temperature of the sensitive point is reduced as much as possible under the condition that the purity of MTBE is guaranteed, and the energy-saving function is achieved. The azeotropic rectifying tower device is improved on the basis of original MBTE production equipment, and has the advantages of being low in cost, convenient to operate and easy to obtain.

Description

technical field [0001] The invention relates to the technical field of MTBE processing and production, in particular to an azeotropic distillation column device and adjustment method for energy-saving and consumption-reducing production of MTBE. Background technique [0002] MTBE is the trade name of methyl tert-butyl ether, which is the product of the reaction of isobutylene and methanol under the action of a strong acid catalyst. Its main use is to replace tetraethyl lead as an additive to increase the octane number of gasoline. In addition, MTBE thermal cracking can Production of high-purity isobutylene, high-purity isobutylene is the raw material for the production of butyl rubber, and also other monomers that need to introduce tert-butyl reaction. Due to the huge value of MTBE, it has been widely used in various fields. [0003] At present, MTBE processing and production is a relatively mature process, and the operation mode and process parameters are relatively mature....

AI Technical Summary

Problems solved by technology

[0004] (1) the by-reaction product of a large amount of MTBE is contained in the MTBE of the tower bottom place of existing azeotropic rectification tower, has increased the separation difficulty of MTBE, makes MTBE production cost improve

[0005] (2) the tower bottom temperature of existing azeotropic rectification tower is too high, the reflux flow of tower top is bigger than normal, makes the excessive methanol in the raw material of producing MTBE can't enter in MTBE, also can't enter in the carbon four after ether, finally can only Accumulated in the azeotropic distillation column, resulting in unstable operation of the azeotropic distillation column, with at least one or two large fluctuations per month

[0006] (3) The reflux ratio of the existing azeotropic rectification tower is relatively large, resulting in a large load in the azeotropic rectification tower and increasing energy consumption. Therefore, it is necessary to improve the azeotropic rectification tower to make its reflux ratio optimal

Images