This year, with the completion and production of a set of 30,000 tons/year glyoxal production plant of Shanghai Huayi Group Shangsu Vulcanization Co., Ltd., the contradiction in the overcapacity of glyoxal in China is increasingly prominent. For the current domestic product quality is not high, the problem of application areas concentrated, the future of the contradiction of excess capacity, but also need to improve the level of technology and expand the scope of application to solve.
The application area is too concentrated In 2006, the total consumption of glyoxal in China was about 45,000 tons. Among them, the consumption of glyoxal in the light industry is about 24.4% of the total consumption, 22.2% for textile printing and dyeing, 46.7% for medicine, 4.4% for the oil industry, and 2.3% for other industries. It is estimated that the total demand for glyoxal in China will reach approximately 57,000 tons in 2010, and the consumption sector will still be mainly concentrated in the three industries of medicine, textile printing and dyeing and light industry.
In the light industry, glyoxal is mainly used in the paper industry. In 2006, the demand was about 11,000 tons. With the steady development of China's national economy, people are increasingly demanding the quality of the required products, and the consumption of glyoxal in the light industry will increase steadily. It is expected that it will reach approximately 13,000 tons in 2010.
Textile printing and dyeing is one of the important fields of application of glyoxal in China. In 2006, it consumed about 10,000 tons. With the eastward shift of the World Dyestuff Industry Center, China has become a major country in the world of dye production and trade, which will greatly increase the demand for glyoxal in China and is expected to reach approximately 12,000 tons in 2010.
Glyoxylic acid, the oxidation product of glyoxal, is an organic synthesis intermediate that is relatively scarce in recent years in China. This year, with the constant development of China's pharmaceutical industry, the demand for pharmaceutical-grade glyoxal continues to increase. The demand in 2006 is about 21,000 tons, and it is expected to reach about 27,000 tons in 2010.
In addition, in the oil industry, domestic glyoxal is currently mainly used for the production of lubricants for oil transmission pipelines, and consumer users are mainly large-scale oil fields. In 2006, the demand was about 0.2 million tons, and it is expected that the demand in 2010 will reach about 0.3 million tons.
The contradiction of overcapacity is highlighted In recent years, due to promising market prospects for glyoxal, many manufacturers have invested in new or expanded glyoxal devices. At present, there are nearly 10 manufacturers of glyoxal in China, with a total production capacity of approximately 100,000 tons/year and a total output of approximately 55,000 tons/year.
Major domestic manufacturers include Shanghai Huayi Group Shangsu Vulcanization Co., Ltd. (with a production capacity of 58,000 tons/year), Hubei Hengri Chemical Industry Co., Ltd. (with a production capacity of 10,000 tons/year), and Shanghai Guangyu Fine Chemicals Co., Ltd. (Production capacity is 10,000 tons/year), Shandong Jin Yimeng Group Co., Ltd. (production capacity is 10,000 tons/year) and Hubei Huanggang Natural Pharmaceutical Co., Ltd. (production capacity is 10,000 tons/year), all adopted Glycol gas phase oxidation production process. Together with Hubei Luotian Shunhui Chemical Co., Ltd.'s 20,000-ton/year new production facility, it is expected that by 2010 China's total production capacity of glyoxal will reach approximately 120,000 tons, and the demand at that time will be only about 57,000 tons. Excess, therefore, the domestic new glyoxal project should be careful.
Two sides attacked to resolve the crisis At present, the domestic production of glyoxal ethylene glycol method, although the technology has made great progress, but compared with foreign countries still have poor product quality and high cost issues. Therefore, in the future, manufacturers should focus on improving product quality, especially the ability to remove formaldehyde, and at the same time control costs.
In addition, the production of glyoxal by the acetaldehyde method has the advantages of better product quality and wider use. Domestic research and development should be stepped up, especially to solve the existing problems such as waste water and exhaust gas pollution, and to increase research efforts in improving yield, process improvement and pollution control, and to achieve industrial production as soon as possible.
Domestic glyoxal products are currently mainly used in the textile printing and dyeing, pharmaceutical and other industries. These industries have relatively high quality requirements for glyoxal. In the future, it is necessary to vigorously develop the application market for construction, oil extraction, paint, water treatment, leather making, cement additives, etc. that do not require high quality of glyoxal, in order to expand the application range of glyoxal. At the same time, certain backbone products must be developed in the fields of textile printing and dyeing, pharmaceuticals, papermaking, and oilfield chemicals to form a stable application market for glyoxal.
At present, China's glyoxal production capacity is already in surplus. In addition to expanding the domestic consumer market, actively expanding exports is also one of the ways. Since only countries such as the United States, Japan, West Germany, and France currently have large production of glyoxal, most of the products are for personal use, with only a small amount of exports, while some countries in Russia, Australia, and Southeast Asia need to be imported from abroad. Imported glyoxal. Therefore, domestic glyoxal production enterprises should aim at the international market, continuously improve product quality, and strive to expand exports, so that China's glyoxal industry develops steadily and healthily.
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