Epichlorohydrin by the most popular glycerol metho

2022-08-16
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Glycerol epichlorohydrin has become the mainstream of the market

glycerol epichlorohydrin has become the mainstream of the market

October 26, 2012

[China paint information] the production of glycerol, a byproduct of biodiesel, has increased rapidly and the cost has decreased significantly, which has brought great changes to the production process of epichlorohydrin. Due to the low cost, the vast majority of new large-scale epichlorohydrin plants in recent years use glycerol as raw material, and the glycerol epichlorohydrin process is becoming the mainstream of the market

the classic method of industrial production of epichlorohydrin is propylene high temperature chlorination. This method has the advantages of stable operation and high self-control level, but it has the disadvantages of low yield, high energy consumption and many "three wastes". The glycerol epichlorohydrin production technology has been successfully applied many years ago, but due to the shortage of glycerol resources and high price, the industry later abandoned this technology. With the increasing shortage of resources, countries have implemented the strategy of replacing the composite wall with reinforced concrete as the load-bearing structure, so biodiesel has developed rapidly. For every 10 tons of biodiesel produced, 1 ton of glycerol will be produced by-product. The development of biodiesel has led to a serious oversupply of glycerol worldwide, and the price has fallen sharply. This prompted the glycerol method epichlorohydrin production process to receive renewed attention

epicerol process for producing epichlorohydrin from glycerol was first developed by Solvay Belgium. The process uses glycerol, a byproduct of biofuels, as raw material. Compared with propylene high-temperature chlorination process, epicerol technology can reduce the consumption of non renewable energy by 50%, reduce greenhouse gas emissions by at least 20%, and greatly reduce water consumption and chlorination by-products

in 2007, Solvay built a 10000 t/a glycerol epichlorohydrin industrial plant in France, and then expanded its capacity to 20000 t/A, and obtained technology and application patents. After years of stable operation of the French plant, vinythai company of Thailand, a subsidiary of Solvay, adopted epicerol technology to build a 100000 ton/year epichlorohydrin plant in the industrial zone of Mata Province, Thailand, and put it into operation in Thailand in February 2012

Solvay said that it is expected that China's epichlorohydrin market will grow at an annual rate of 8% in the next few years, accounting for 35% of the total global demand by 2016. Therefore, in June this year, Solvay announced that its Thai subsidiary vinythai would build a new epichlorohydrin plant in Taixing, China, to meet China's growing market demand. The plant plans to invest 155 million euros, with an initial capacity of 100000 tons/year, and will be put into operation in the second half of 2014. In addition, Solvay plans to promote the application of this process technology in Japan and other Southeast Asian countries to meet the rapid growth of epichlorohydrin market in Asia

China has also set off a boom in the construction of glycerol epichlorohydrin projects. For example, Yangnong chemical has a capacity of 60000 tons/year, and is expanding its capacity to make the total capacity reach 1. The automotive industry will not only usher in a large period of driverless driving, but also 20000 tons/year. It is expected to be fully put into production by the end of 2012. YIHAI KERRY group, a domestic glycerin giant, will invest and build glycerin epichlorohydrin projects in Lianyungang and Shandong. At present, the 50000 T/a glycerin epichlorohydrin plant in Lianyungang has been completed, and it is expected that it can be supplied to the market within this year. It will also build the phase II 50000 T/a glycerin cyclo170 blockboard oxychloropropane plant according to the market situation. In addition, there are several projects of 30000 ~ 50000 tons/year under construction or have been put into operation

according to market analysis, the application of glycerol epichlorohydrin process will continue to expand, especially in new plants. However, the traditional propylene high temperature chlorination process will not disappear. Because these units are usually integrated with upstream chlor alkali units, CO production projects include chlor alkali, chloropropylene, epichlorohydrin, chlorohydrin rubber and other products

it is also understood that there is another production method of epichlorohydrin in the market at present - the allyl alcohol process technology of Showa electric company of Japan. Compared with the traditional propylene high-temperature chlorination method, the reaction conditions of this method are more mild and easy to control. The chlorine consumption is only about half of that of the traditional process, and the energy consumption, by-products and wastewater are reduced. This method is being further promoted. At present, this process is authorized to be applied in Taiwan's triplexchemist (the consumption demand of triplexchemist shows rigidity), China's Tianjin Chemical Industry Company and Saudi Arabia's Jubail chemical industry company, and has begun to produce epichlorohydrin products

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