Process and system for producing ethanol through solid-state continuous fermentation and distillation of sorgo straws

Abstract

The invention relates to a process and a system for producing ethanol through solid-state continuous fermentation and distillation of sorgo straws, wherein the process comprises a raw material pulverizing and preprocessing step, a strain adding step, a solid-state fermentation step and a solid-state distillation step; the solid-state fermentation step is continuously finished in a multilayer multisection solid-state continuous fermentation device, and the solid-state distillation step is continuously finished in a multilayer differential pressure type solid-state continuous distillation device, thereby radically overcoming the abuse that the past solid-state fermentation and distillation processes can not continuously produce, realizing continuous, mass and automated production and processing, greatly improving the production efficiency of preparing the fuel ethanol from the sorgo straws, and achieving the purposes for lowering the production cost, improving the yield and improving the economic benefit; an adopted continuous production system device is particularly suitable for industrialized large-scale production, thereby promoting the generalization and the application of a biological energy source technology.

Description

technical field [0001] The invention relates to a process and system for preparing ethanol by solid-state fermentation and distillation of sweet sorghum straw, in particular to a process and system for producing ethanol by solid-state continuous fermentation and distillation of sweet sorghum straw. Background technique [0002] In order to accelerate the pace of energy structure adjustment and realize the sustainable and coordinated development of energy, environment and economy, all countries in the world are committed to the development of renewable energy to explore new ways to replace petroleum and other energy sources. At present, studies have found that the stalks of green energy crops such as sweet sorghum contain a large amount of effective substances such as sugar, which can be fermented and distilled to produce fuel ethanol. The production of ethanol from sweet sorghum stalks mainly adopts solid state fermentation, distillation and liquid state fermentation and dis...

AI Technical Summary

Problems solved by technology

However, the current solid-state fermentation and distillation of straw to prepare ethanol mostly follow the traditional solid-state fermentation and distillation process and equipment, which are all intermittent productio

Images