PVC is one of the five universal resin materials, with excellent characteristics such as acid and alkali resistance, wear resistance, flame retardancy, and insulation. Currently, it has become the second largest plastic product in the world after polyethylene.
1.Domestic production capacity and output of PVC
The production process of PVC mainly includes two paths: calcium carbide method and ethylene method, with the main difference being the preparation method of vinyl chloride monomer.
From the perspective of production in recent years, PVC production has shown an increasing trend year by year, and the entire industry’s production capacity has entered a rational development stage. Market demand has gradually recovered, and production has steadily increased. According to data from China Chloroalkali Network, the overall operating rate of China’s PVC industry has remained above 50% in recent years.
2. The Development Trend of PVC Industry
(1) Strengthen the construction of industrial integration devices
Since 2007, the country has formulated a series of regulations that provide detailed regulations for the development of the PVC industry. At the same time, it encourages the construction of supporting equipment for calcium carbide and chlor alkali production enterprises, and strengthens the construction of industrial integration devices. Under the guidance of current national policies, the establishment of industrial integration devices has become an inevitable trend in the central and western regions of China, which are rich in coal, salt mines, and limestone resources. Under the role of integrated devices, by relying on rich resource advantages and matching advantages, production costs can be effectively controlled and various by-products can be recycled, Enhanced the market competitiveness and survival ability of the enterprise.
(2) Diversified production processes
In the current development of domestic PVC enterprises, the emphasis on the diversification of production equipment processes is constantly increasing, which makes their requirements for technological level increasingly high. The trend of process diversification is unstoppable. With the further development of domestic PVC production processes, enterprises need to gradually apply some new production processes while retaining the original calcium carbide process. At the same time, PVC polymerization technology will also be significantly improved, especially in terms of production capacity of polymerization reactors. In addition, it is also necessary to actively introduce advanced foreign production technologies and gradually promote them to improve the economic efficiency of the industry.
Post time: Jul-28-2023
