According to Zhang Wenlei, vice chairman and secretary-general of the China Chlor-Alkali Industry Association, in the first half of this year, the new capacity of caustic soda was less than 1%, the output was 16.98 million tons, and the industry average operating rate was 82%; the new capacity of PVC was also less than 1%. %, the output is 9.34 million tons, and the industry average operating rate is 77%. Industry benefits have increased year-on-year. According to the association's statistics, the total profit of 69 key enterprises in the first half of the year was 11 billion yuan, a year-on-year increase of 50%.
Zhou Jun, the leader of the polyvinyl chloride expert group of the China Chlor-Alkali Industry Association, said that the industry has established a wastewater cascade utilization system and implemented advanced production technology to reduce the source of the process, such as the realization of the reuse of the polymer mother liquor to make the water cycle performance. Continuous improvement; the recycling and reuse of waste gas and waste residue is also remarkable. Some companies have been able to eliminate the by-product of liquid chlorine, and some have established a new solution for hydrochloric acid analysis; some companies have realized the use of calcium once and twice, turning the original waste residues into commodities for sale; Xinjiang Tianye has constructed The whole life cycle mercury balance system based on the calcium carbide method of polyvinyl chloride was developed; the furnace-producing robots in the calcium carbide production process began to be used, which improved efficiency while reducing safety risks.
Zhou Jun also pointed out that the next step for enterprises in the industry should also focus on protecting value, tapping value and creating value. While strengthening intrinsic safety and intrinsic environmental protection, it also strives to increase product added value and resource utilization efficiency and open up new application areas.
Cai Jie, deputy chief engineer of the Petroleum and Chemical Industry Planning Institute, emphasized that overcapacity and mercury catalyst problems are still problems faced by the industry. Newly built caustic soda, calcium carbide process PVC, calcium carbide, etc. are listed as restricted development projects by the state. The required advanced technological transformation and upgrading projects shall be replaced by equal or reduced quantities. Environmental supervision and safety rectification have become a "double-edged sword", which has reduced the start-up of many downstream small and medium-sized chlorine-consuming devices, causing the problem of alkali-chlorine imbalance to become more prominent.
Cai Jie suggested that the chlor-alkali chemical industry can achieve deep industrial integration with modern coal chemical industry, solve the key bottlenecks in the development process, and build a high-tech, green and environmentally friendly circular economy system. Chlor-alkali companies must also in-depth study the short-board catalog of new chemical materials, accelerate deep integration with the new chemical materials industry, and transform themselves from a basic raw material manufacturer to provide refined, high-end, differentiated and high value-added new materials and functions Chemical manufacturers.