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As of June 2006, China's annual production capacity of chlorinated aromatic hydrocarbons was mainly chlorinated benzene, p-nitrochlorobenzene, o-nitrochlorobenzene, p-dichlorobenzene, o-dichlorobenzene, p-chlorotoluene, and o-chlorotoluene. It reached 500,000 tons, 333,000 tons, 167,000 tons, 58,000 tons, 27,000 tons, 68,000 tons and 68,000 tons, respectively, an increase of 93.8%, 93%, 93%, and 152% compared with 2001. 107%, 467%, and 467%. The current production capacity of the seven major varieties accounted for 62.5%, 64.8%, 64.8%, 34%, 32%, 68.5% and 68.5% of the global production capacity. Not only the production capacity has grown rapidly, but also the major production enterprises in China have maintained a high operating rate in recent years, and their production has also grown rapidly. Products, especially its downstream products, have been exported to foreign countries, becoming the world’s major chlorinated aromatic Consumer country.
Due to the rapid expansion of domestic production capacity of chlorinated aromatic hydrocarbons in recent years, major varieties began to show an oversupply situation in 2005, prices gradually declined, and the market continued to slump. In 2006, although the prices of pure benzene and toluene for raw materials rose, the prices of major varieties continued to decline. Even during the peak sales season of chloroaromatics in March-June, market demand remained sluggish and failed to drive the market out of the downturn. In mid-June 2006, the domestic tonnage of chlorinated benzene, p-nitrochlorobenzene, o-nitrochlorobenzene, p-dichlorobenzene, o-dichlorobenzene, p-chlorotoluene and o-chlorotoluene were respectively 6,800 yuan and 6,300 yuan. 7,000 yuan, 8,500 yuan, 8,500 yuan, 10,300 yuan and 5,700 yuan; compared with the same period last year have a certain degree of decline, the current price of the seven major varieties compared with the same period last year dropped by 12.8%, 11.3%, 19.5%, 11.5 %, 34.5%, 19.5%, 3.4%. At present, the price of major varieties is basically close to the cost price, and there are almost no economic benefits for the production facilities. The profit margin has been repeatedly compressed. Under the premise of maintaining the status quo of pure benzene and toluene, the price basically has no room to continue to decline.
In view of this situation, the key to the future development of the chlorinated aromatic hydrocarbon plant is to connect the chlor-alkali plant to the next, and to connect the fine chemical product tree. At present, there are two sets of nitrochlorobenzene plants in the country without the upstream chlor-alkali equipment. Most of the dinitrochlorobenzene equipments require the purchase of chlorinated benzene. However, apart from a company, the chloro-toluene production equipment is not equipped with chlor-alkali equipment. Relying on. With the gradual expansion of production capacity, the transportation and storage of large quantities of dangerous chemicals, chlorine, are used as raw materials, which greatly increases the production costs, and the production equipment's ability to evade market risks is very fragile.
The more important development of chlorinated aromatics is to increase the development and production of downstream products. At present, there are 6 sets of chlorinated benzene production facilities in China without any downstream products. Most of the major nitrochlorobenzene enterprises support the construction of downstream products, but most companies only have 1 or 2 downstream products, and their ability to digest chloroaromatic hydrocarbons is limited; Most of the production facilities do not have downstream products, and the product sales mainly depend on the international market. In 2005, the export volume of dichlorobenzene was about 20,000 tons, accounting for nearly 50% of the total output; most of the chlorotoluene production enterprises also did not have downstream products, including orthochlorine. About 70% of toluene production is exported.
Therefore, in the future, the chlorinated aromatic hydrocarbon production equipment firstly draws on the model and experience of successful product chains at home and abroad, and develops a number of fine chemical product chains that are based on chlorinated aromatic hydrocarbons and are derived from rational support, wide depth, and recycling. To form a leafy product tree, to achieve the concept of circular economy and development model. The second is to promote cleaner production. In recent years, the prices of seven chlorinated aromatic hydrocarbons fell to the bottom of the price range from December 2005 to March 2006. The key reason is that the State Environmental Protection Administration proposed to govern the Yellow River and Yangtze River along the Yangtze River in January 2006. Due to the lagging production process of many downstream products of chlorinated aromatics, especially environmental pollution, the forced shutdown or reduction of production during the process of treatment, the shutdown, shutdown, and reduction of downstream products directly affect the demand and consumption of chlorinated aromatic products. Therefore, at present, China's chlorobenzene series products have great potential for downstream product development and product export, and the key to restricting their development lies in environmental protection. As long as we persevere in promoting the clean technology in the downstream product synthesis, the future prospects of our chlorobenzene series products are still promising. The third is to expand new application areas. Domestic chlorinated aromatics plants should focus on the development of downstream products of dichlorobenzene and o-chlorotoluene, changing the situation in which these two major species rely mainly on the international market, and developing high-purity chlorinated benzene, o-dichlorobenzene, and trichlorobenzene. Nitrochlorobenzene and meta-dichlorobenzene meet the needs of different industries to ensure the healthy and sustainable development of our chlorinated aromatics plant.
After rapid development in recent years, the production capacity and output of the main products of chlorinated aromatics in China ranks first in the world. However, at present, there has been a serious excess of chloroaromatics production capacity in China, and the equipment efficiency of the major varieties is facing a loss-making situation. Therefore, in the future development of chlorinated aromatic hydrocarbons in China, it is necessary to avoid the duplication of construction, speed up the upgrading of synthesis technology, and the production and safety management of equipment. At the same time, we will focus on the implementation of an integrated upstream-downstream strategy to extend the product chain and achieve upstream and downstream linkages.