Among the companies that adjusted, relocated and shut down, there were 189 chemical companies involved, including chemical plants, paint and pigment factories, rubber and plastics plants, and chemical plants. Most of these companies are relatively small, some have no land use certificates, and some are unqualified units for safety improvement. Shanghai is an extremely large city in China, and it is also a petrochemical base that processes nearly 20 million tons of oil a year. However, the area of ​​the city is only 6,600 square kilometers, and the land has become a rare resource. The closure of these enterprises will not affect the development of Shanghai's chemical industry. On the contrary, some high-tech fine chemical and biopharmaceutical chemical companies will bring new opportunities for development after adjustment and relocation.
During the “11th Five-Year Plan†period, Shanghai Petrochemical and the fine chemical industry will continue to grow at a double-digit rate, and the shortage of land will become a bottleneck restricting the rapid development of the industry. Promoting land-saving and intensive use has become the most effective measure to solve the problem.
Shanghai's chemical industry promotes land-saving and intensive use, and there are mainly three approaches.
To the sea. Shanghai Chemical Industry Park has realized the development of “zero cultivated landâ€, and the planned land of 29.4 square kilometers in the chemical industry area has been formed by tidal flats and reclamation.
Teng cage for birds. Last year, Songjiang District shut down high-energy, low-output, heavy-polluting calcium carbide plants and ferroalloy plants, and introduced companies with high development potential and high technological content. This year it also adjusted 65 companies covering 1,205 acres. According to preliminary calculations, after adjusting and introducing new projects, sales revenue could jump from 338 million yuan to 2 billion yuan, and profits from negative 23.58 million yuan to more than 60 million yuan.
Industrial agglomeration. Shanghai Petrochemical will focus on the development of Bengbu-Shanghai Chemical Industry Park, improve Wusong Chemical Industry Park, upgrade Jinshan Petrochemical, adjust Gaoqiao Petrochemical, and establish the two major divisions of Jinshan and Fengxian in the chemical industry zone. These industrial parks built with the concept of "integration" are rationally equipped with production factors. The unit land yield rate is high, and land resources are saved to the maximum extent.
A driving pulley, in particular, is a powered wheel and axle that moves a conveyor belt. Also called belt conveyors, a conveyor belt is a loop of material that runs between two or more pulleys: drive pulleys and idlers. The purpose of conveyor belts is to move objects along the belt to another location. In the conveyor belt system, a drive pulley has power applied to it and an idler is a pulley that has no power. The drive pulleys will cause the belt to move toward them, while the idler pulley simply turns over and allows the belt to move. The power can be derived from a motor or can be provided by hand. The larger the materials or goods that are moved by the conveyor built the pulley is powering, the stronger the motor or other power source will need to be that drives the drive pulley.
A pulley is one of the six simple machines, along with an inclined plane, lever, wheel and axle, wedge and screw. The belts operated by drive pulleys typically have two or more layers and are usually made of rubber. The inside layer is the strong layer, called the carcass, that is next to the pulley, and the outer layer is called the cover. For strength, the carcass is usually made of cotton or plastic mesh and the cover is rubber or plastic.
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