A process of saccharification and desanding for the production of ethanol by fermenting potatoes as raw materials

Abstract

The invention discloses a saccharification and sand removal process for producing ethanol through fermentation by using potatoes as raw materials. The saccharification and sand removal process comprises the following steps of: crushing the raw materials, feeding the crushed raw materials into a proportioning tank for pre-enzymolysis, then feeding the materials into a preheating tower for preheating, conducting liquefaction, feeding the liquefied materials to a flashing tank for flashing, feeding the flashed materials into a saccharification tank, adding saccharifying enzyme for saccharification treatment, conducting primary liquid-solid separation, feeding a liquid phase obtained through the primary liquid-solid separation into a secondary buffer tank, feeding a solid phase obtained through the primary liquid-solid separation into a washing tank for washing, conducting secondary liquid-solid separation to the washed materials, feeding a solid phase obtained through the secondary liquid-solid separation to a drying section, and feeding a liquid phase obtained through the secondary liquid-solid separation to a proportioning tank for proportioning; and feeding a liquid phase output from the secondary buffer tank into a primary cooler, preheating the liquid phase as cooling medium, disinfecting and cooling the preheated materials, and finally feeding the cooled materials for fermentation. In the entire saccharification and sand removal process for producing ethanol through fermentation by using potatoes as raw materials, not only can fine sand in the raw materials be removed, but also heat is effectively used, cooling water is not needed, and the goals of removing sand, saving energy and saving water are achieved.

Description

technical field [0001] The invention belongs to the technical field of ethanol production and preparation, and in particular relates to a saccharification process for fermenting and producing ethanol with potatoes as raw materials. Background technique [0002] With the shortage of petrochemical resources and the aggravation of energy crisis, the development of fuel ethanol and biofuel is an important direction of my country's energy development. Initially, the raw materials for the production of fuel ethanol in my country were mainly corn and aged wheat, but with the expansion of production scale and the rapid development of other grain deep processing, the aged grain has been exhausted, and the grain supply has begun to tighten, and the country has urgently stopped Some projects use corn as raw material, so it is of great significance to vigorously develop ethanol processing projects using non-grain crops such as potato (including cassava and sweet potato), sweet sorghum an...

AI Technical Summary

Problems solved by technology

In the liquefaction process of slurry, some energy is not effectively utilized, resulting in high energy consumption

Images