National conditions vary from different countries. Since the 1960s, our country has been attaching great importance to the research and development of glycerin produced by intoxication method. Until the 1990s, we carried out experiments on different raw materials (sugarcane molasses and starch raw materials), different process routes, high osmotic resistant inebriated parent bacteria and intoxication, and intoxication with sodium sulfite. The scale of the trial ranged from small trials to pilot trial and even built a workshop with a daily output of 500kg. Before the 1970s, sugar cane molasses was mainly used as raw material, and sodium sulfite controlled the process route of inducing the fermentation of inebriate mother fungus. The downstream project still used the oil saponification method of vapor vacuum distillation, and the distillation liquid was decolorized to obtain products. By the mid-1980s, a larger workshop had been built, with improvements planned, especially downstream. Finally, due to many problems (such as equipment corrosion, environmental pollution, poor crystal production quality, low yield, etc.), it stopped. Since 70 s, the raw material to technicians to starch and sugar cane is sweet, biological engineering with specific provisions of hypertonic yeast resistant hair, extract the downstream process continuing, analysis. the result is optimally mixed. Happy is strains, hair drunk biological parts above lead the world; What is better is the chemical part of the downstream engineering. The overall technical level is good and won the provincial and national science and technology conference results. It’s also included in the collection of related scientific and technological achievements and documents in China, but there are still seven definite distances from industrial production, which need to be seriously solved.
The Latest Development of Glycerin Fermentation in China
Since the 1990s, scientific and technical workers directly engaged in the research of this project have devoted themselves to the research and tackled the problems existing in the project. The problem has been recognized for a long time, and many peers have reached a consensus, such as downstream engineering raw material purification, to find an effective method is not easy, has been affecting the results into the transformation of productivity. On the other hand, society is still enthusiastic about the project. There’re so many people who show great concern and interest in the project, and the market demand cannot wait. Therefore, scientists and technicians are encouraged to devote themselves to research and exploration as always, especially for downstream projects. Fermentation method Glycerin, finally in the late 90s, successively established some 1000: legal glycerol of hair drunk a” factory, individual to reach thousands of tons of annual production after decades. In the beginning, it’s not very ideal, in today’s world it’s still a new field, and it will take some time for all of them to reach the standard. but it illustrates the Chinese Fermentation glycerin industrial production has been a success. By the end of 1995, there will be a capacity of 4500 t level of hair drunk law glycerin factory stands in the east of the world, into a world-class gauge is large. It’s a concept, which is equivalent to 4500 t The yield of glycerin after saponification in several provinces. Shanghai, an old industrial base, has an annual output of 100,000 tons of soap, and the yield of glycerin is only close to 4o00t. The yield of saponified glycerol in China in recent 10 years changed as follows: 30,052 t in 1985;34,100 t in 1986 and 36,800 t in 1987;37,00t in 1988;36,600 t in 1989;35,600 t in 1990, 33,300 t in 1991 and 30,500 t in 1993;From the above data, it can be seen that the production of saponified glycerin has shown an obvious trend of decline in recent years. The trend of decline was irreversible, so we had to find a new way to source glycerol. In such a big country like China, the gap between the increase of glycerol consumption and the increase of glycerol output was getting larger and larger, so relying on imported products was never an option. According to the statistics, the glycerin factories which have been built and under construction in China are distributed in Shandong, Jiangsu, Gansu, Henan, Hubei, Shanxi, and other provinces. Nevertheless, suggest everybody cannot rush forward one after another, although they want to go up, also want to make good social investigation, do well to establish a project to prove, weigh in economic benefit to calculate analysis to wait.