Use of low temperature boiling technology in alcohol production

Abstract

The invention relates to application of a low-temperature steam boiling technique in alcohol production. The application comprises the following steps: starch milk is fed into a precooking tank and then an alkaline substance is added to adjust pH value; low-temperature steam boiling is carried out after preheating; a small quantity of liquifying enzyme is added in a pre-liquifying tank, and is pressed and cooled down in a flash tank after heating and heat preservation; then, the liquifying enzyme is pumped into a saccharification tank by a liquifying pump, and the pH value is adjusted by sulphuric acid inside the saccharification tank; moreover, after an appropriate amount of saccharifying enzyme is added for saccharification, the temperature inside the saccharification tank is reduced tobetween 30 and 34 DEG C through a heat exchanger by a pump; and the treated starch milk is conveyed to a fermentation section for fermentation. The novel technique comprises the following key points that starch inside sweet mash is furthest converted into short-chain polysaccharide; a given amount of reducing sugar is used in yeast; and saccharification rate reaches between 20 and 40 percent. Theapplication has the advantages that the application saves a great amount of steam during producing alcohol, and can save 8,658 thousand yuan every year when annual output of alcohol is equal to 100 thousand tons; moreover, the application not only can be used in alcohol production, but also can be widely used in the corn deep processing field; meanwhile, the application has the characteristics ofscientific method, simplicity and feasibility, energy conservation, environmental protection and high cost performance of product.

Description

technical field [0001] The invention relates to the application of a new technology in the field of corn deep processing, in particular to the application of a low-temperature cooking technology in corn deep processing to alcohol production, and belongs to the technical field of raw material preparation. Background technique [0002] At present, in the process of alcohol production, most manufacturers adopt medium temperature cooking process in the liquefaction and saccharification process. There are also a few old factories that still use high-temperature cooking to produce alcohol. Produce alcohol energy consumption height, profit low with above-mentioned two kinds of methods. In recent years, although low-temperature cooking technology has been applied in several factories in alcohol production. However, since the production process adopts dry pulverization, the liquefaction and saccharification process has the disadvantages of complex production process, high energy co...

AI Technical Summary

Problems solved by technology

However, since the production process adopts dry pulverization, the liquefaction and saccharification process has the disadvantages of complex production process, high energy consumption and low production efficiency

The germ, fiber and protein in the corn are not extracted during its production process. Therefore, the purity of the starch in the liquefied mash is relatively reduced, and the production efficiency is reduced in the production process; The fermentation process mainly requires sugar, protein and trace elements), so many by-products are produced during the fermentation process, which affects the fermentation effect; when the fermented mature mash enters the distillation process for purification, it increases the workload of the next process

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