Process for producing alcohol-ether hydrazine under medium/low-pressure

Abstract

The invention provides a process for producing alcohol-ether hydrazine under medium / low-pressure, which solves the disadvantages of an alcohol-combining process in the prior art. A competitive replacement choice of the process is to serially connect alcohol-ether synthesis and ammonia synthesis into one production line, wherein alcohol-ether synthesis is performed first, and then ammonia synthesis is performed, but alcohol-ether synthesis and ammonia synthesis are relatively independent of the separation of respective products thereof; different proportion and the yield proportion of two products are flexible to regulate; ammonia synthesis does not need the process of additionally adding synthesis gas for compression; and the total pressure is 4 to 15 MPa. The process has the advantages of effectively reducing the power consumption of compression, realizing the flexible proportion regulation of alcohol or ether products, improving the efficiency of the whole technological process, reducing production cost to the utmost extent and laying a foundation for technical progress of the coal chemical industry and large-scale comprehensive development.

Description

technical field [0001] The invention belongs to the technical field of synthesis alcohol, ether and ammonia synthesis, and more specifically relates to a production process of medium and low pressure alcohol and ether hydrazine. Background technique [0002] Synthetic ammonia co-production methanol process is a pioneering work in my country's chemical fertilizer industry, which not only makes new progress in energy saving and consumption reduction of synthetic ammonia, but also adjusts the product structure of chemical fertilizer enterprises, breaks through the situation of a single product, and strengthens the market of enterprises Resilience. But the practice shows that the alcohol-linked process has obvious disadvantages, for example, (1) In order to adapt to the overall ammonia synthesis process, the methanol synthesis pressure in the alcohol-linked process is generally set at 13-15MPa, while the ideal operating pressure of methanol is 5-8MPa. Obviously, high pressure op...

AI Technical Summary

Problems solved by technology

However, practice shows that the combined alcohol process has obvious shortcomings. For example, (1) in order to adapt to the overall ammonia synthesis process, the methanol synthesis pressure in the combined alcohol process is generally set at 13-15 MPa, while the ideal operating pressure of methanol is 5-8 MPa

Obviously, high pressure operation means high energy consumption

(2) In the process flow adopted by the co-alcohol process, a large amount of synthetic ammonia raw material gas needs to pass through the methanol synthesis unit, which will undoubtedly lead to low efficiency and high energy consumption of the methanol synthesis unit, and its technical indicators such as space-time yield and energy consumption cannot be compared with Large Methanol Comparable

However, the synthesis rate of methanol under low pressure is low, and the amount of released gas is large, so its material consumption and energy consumption are not satisfactory.

Images