Grain dry segmented steam explosion pretreatment method for fermenting liquor by using pure grain in solid state

Abstract

The invention discloses a grain dry segmented steam explosion pretreatment method for fermenting liquor by using pure grain in solid state, which belongs to the field of liquor fermentation. The method comprises the following basic steps of: pre-balancing the moisture content of the grain; putting the grain into a two-way air inlet quick-opening steam explosion reaction tank separately or together; introducing superheated steam and high-temperature air until a certain pressure is achieved; and maintaining for a certain period of time, and quickly opening a ball valve at the bottom of the steam explosion tank after the pressure rises to a peak valve to explode a material into a normal-pressure collecting tank. In the grain treated by the method, the cell tissue is completely damaged, the curing degree of starch is high, and the utilization ratio is high in a fermenting process; meanwhile the grain is sterilized, so that bacteria are removed. By adopting the method, the grain treatment energy consumption in a liquor plant can be lowered, the liquor yield and the superior product rate are increased, and the comprehensive benefit is increased.

Description

Technical field [0001] The invention belongs to the field of liquor brewing, and in particular relates to a pre-treatment method of grain dry method segmented steam explosion for pure grain solid-state fermentation of liquor. Background technique [0002] my country is a big country in the production of liquor, which reached 5 million tons in 2008. With the improvement of people's living standards, people have higher and higher requirements for the quality of liquor. Pure grain solid-state fermented liquor is a representative of the traditional Chinese food industry. It uses pure grain as raw material and uses koji to undergo solid-state saccharification, solid-state fermentation, storage and blending after solid-state distillation to produce high-quality Chinese liquor with specific qualities. Due to the use of pure grain fermentation, there is bound to be a large amount of grain to be processed. The traditional processing method of liquor in my country is to moisten the grain ...

AI Technical Summary

Problems solved by technology

Although this process solves some problems to a certain extent, the double-set pressure vessel is used for air puffing. Not only the pressure tank is a pressure vessel, but also the decompression tank is also a pressure-resistant equipment, and the volume is often more than 10 times that of the pressure tank. , large investment

The decompression tank needs vacuum operation, which requires high-cost vacuum equipment. Such equipment is complicated to operate, has a low filling coefficient and low operational safety.

There are also a series of problems in extrusion and puffing. First, the scope of application of the equipment is limited, and the materials processed by a single machine are limited. Different raw materials require different screws and operating parameters, but it is extremely difficult to adjust the equipment and operating parameters. Second, the existing Extrusion equipment is rough in design, processing, and poor in durability, which limit the large-scale application of extrusion equipment in production, and are often used in the processing of a small amount of food

Thermal injection technology and air puffing technology have similarities in essence, but there are obvious differences in equipment and technology. Although the invention patent with publication number CN1060679A has given various operating parameters, the key parameters such as The temperature of the steam is not clearly defined, and it is difficult to use the expression of the weight of the steam into the actual operation. In fact, whether the grain can play a good puffing effect, a key factor is the physical properties of the steam and The amount of usage, the use of ordinary steam will easily lead to the existence of condensed water in the material, and the existence of condensed water has a serious negative impact on the puffing effect of grains, which makes it difficult to achieve the desired results in the implementation of the patent. This patent is automatically abandoned. This may also be an important factor