Study On Distillation Technology Of Luzhou Daqu Liquor

Food industries play an important role in our domestic economy, as well as the Chinese spirits as the traditional industry in food industries .In this paper the changes of flavor substances such as ethanol, acid, ethanol, ester in the process of Great Kpji Liquor, solid-distillation and distillation disciplinarian were studied. The different conditions of fermented grain highness, properties of steam, and refrigeration techniques were analyzed and tested by using modern system theories and methods.The changes of ethanol concentration in the process of steam and head of distillation and flavor substances such as ester, acid, ethanol in the distillation were studied in the article. The distillation efficiency of high quality products and the results concluded from the test of quality were analyzed when the fermented grain highness was different. The present study shows that the fermented grain highness should be added as high as possible under the condition that the fermented grain loosening and advantage operation was not being affected. As to the Heavy Flavor GKL,the fermented grain highness should be 0.9-1.0m. In addition, fermented grain the loosening and penetration could be increased by using double layer distillation.The properties of steam affecting on the high quality distillation efficiency and quality of ethanol were studied. Compared with the different steam pressure and the way of steam heating, the result showed that the pressure of steam should be as low as possible(0.01MPa and 0.004MPa are good)while slow heating. And undirected heating should be advocated.The effect of refrigeration technology on the high quality products distillation efficiency and the quality of ethanol were analyzed. Compared with the effect of traditional condensation and two steps distillation with condensation, refrigeration separately, the result showed that the two steps condensation had better result. Synchronously, the stimulation of new stilled liquor can be reduced with withdrawing at high temperature.Based on the above examinations, we investigated and spot-check the real production of the workshop of brewing. Control test of production and test also have been done. The results showed that the distillation efficiency of the high quality products have been increased 6.37% under the science techniques with the test. The quality of ethanol consistency and clearance were improved.