Process and equipment for preprocessing cellulosic ethanol raw material

Abstract

The invention provides a process and equipment for preprocessing a cellulosic ethanol raw material, which is a raw material preprocessing process for producing cellulosic ethanol by straw biomass raw materials, such as wheat straw hood, cornstalk, and the like, and shell biomass raw materials, such as rubber seed shell, palm shell, and the like. In the raw material preprocessing process, steam and compressed air are adopted; and chemical medicines and auxiliary agents are not used during steaming, the temperature is low and the time is short, so the process can effectively prevent fiber from degrading and charring, improve the yield and the separation effect by high consistency hot grinding, and reduce the pollution load. Meanwhile, the production cost and the equipment investment can be reduced, and no waste liquor drainage in the whole preprocessing process can be realized.

Description

(1) Technical field

[0001] The invention relates to the cellulosic ethanol industry, in particular to a cellulosic ethanol raw material pretreatment process and equipment. (2) Background technology

[0002] At present, ethanol production mainly uses starch and sugar as raw materials, and the production cost is high, and it is limited by the increase of population and the decrease of arable land. Raw materials of straw and seed shells mainly composed of cellulose are abundant and cheap renewable resources on the earth. Therefore, the production of cellulosic ethanol will become the development direction of fuel ethanol. The raw material pretreatment process and equipment of cellulosic ethanol production directly affect the yield, cost, pollution load and equipment investment of cellulosic ethanol production. (3) Contents of the invention

[0003] The purpose of the present invention is to provide a kind of pretreatment process suitable for the production of cellulosic eth...

Images