Method for continuously producing low carbon alcohol by synthesis gas

Abstract

The invention provides a method for continuously producing low carbon alcohol by synthesis gas, which is characterized by the unique technology of producing the low carbon alcohol by the synthesis gas and generating corresponding alcohol by the hydration of olefin and the ingenious combination thereof. In the invention, two fixed bed reactors are connected in series, i.e. a reactor for producing low carbon alcohol by the hydration of olefin is arranged behind a reactor for producing the low carbon alcohol by the synthesis gas, wherein deionized water enters the olefin hydration reactor by segments, and low-grade olefin passes through a catalyst bed layer from bottom to top. Reaction products enter a separation device, and unreacted synthesis gas, lower-grade olefin and deionized water arerespectively returned to the reactor for recycling. The invention controls unit energy consumption via a material recycling mode, and effectively increases the yield of the alcohol and the total conversion rate of the raw materials.

Description

technical field [0001] The invention relates to the field of alcohol preparation, in particular to a method for continuously producing low-carbon alcohol from synthesis gas. Background technique [0002] With the increasing demand for energy in modern economic construction and social development, as well as the continuous enhancement of people's awareness of environmental protection, rational use of natural resources and active development of new energy systems are becoming more and more important to the survival and development of human society. After many years of exploration and research by predecessors, an important way to rationally utilize coal and natural gas has been concluded, that is, the process of producing hydrocarbons and alcohols through synthesis gas. As one of the branches of C1 chemical research, the research on the synthesis of low-carbon alcohols based on coal and natural gas via syngas is in the ascendant, and its efficient and clean utilization technolo...

AI Technical Summary

Problems solved by technology

However, there is a large amount of water in the product of this method, and the water phase contains less than 2.5wt% sec-butanol. Although the water / ene ratio is large and has the advantage of high conversion rate per pass, from the perspective of process production, the water / ene ratio is large. If the amount of circulating water is large, the energy consumption will inevitably increase, the cost will remain high, and the practical application will be difficult.

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