Liquid chlorine delivery system for producing chlorinated polyethylene

Abstract

The invention discloses a liquid chlorine delivery system for producing chlorinated polyethylene. The liquid chlorine delivery system comprises a chlorine storage tank A, a chlorine storage tank B, a chlorine storage tank C and a membrane air compressor, and is characterized in that the top faces of the chlorine storage tank A, the chlorine storage tank B and the chlorine storage tank C are respectively provided with a gas inlet pipe, a gas outlet pipe and a liquid chlorine inlet pipe, the bottom faces of the chlorine storage tanks are respectively provided with a liquid chlorine outlet pipe, the gas outlet pipes of the chlorine storage tanks are connected to a total gas outlet pipe, the gas inlet pipes are connected to a total gas inlet pipe, the liquid chlorine inlet pipes are connected to a total liquid chlorine inlet pipe, the liquid chlorine outlet pipes are connected to a total liquid chlorine outlet pipe, and the pipes of each tank are provided with valves for control respectively. When the chlorinated polyethylene is produced, the total gas outlet pipe is connected with a gas inlet of the membrane air compressor, the total gas inlet pipe is connected with a gas outlet of the membrane air compressor, and the total liquid chlorine outlet pipe is connected with a workshop reaction kettle; when the liquid chlorine delivery system is used for liquid chlorine tank car unloading, the total gas outlet pipe is connected with the gas inlet of the membrane air compressor, the gas outlet of the membrane air compressor is connected with a compressed air opening of a tank car, and a liquid chlorine outlet of the tank car is connected with the liquid chlorine inlet pipes of the chlorine storage tanks.

Description

technical field [0001] The invention relates to a liquid chlorine delivery system for producing chlorinated polyethylene. Background technique [0002] Liquid chlorine is a yellow-green oily liquid that is poisonous. It is a low-pressure liquefied gas. In order to maintain the liquid state of liquid chlorine, the temperature of the chlorine storage tank must be controlled below 35°C. The periphery of the chlorine storage tank needs to be covered with insulation materials to prevent liquid chlorine Chlorine vaporizes into a gaseous form. Domestic production of chlorinated polyethylene mostly uses liquid chlorine. Some enterprises directly use small liquid chlorine cylinders, while enterprises with large liquid chlorine storage tanks use canned pumps or submerged pumps to transport liquid chlorine to the reactor. Since chlorine is a very active element, it can react with most elements (or compounds). During the transportation of liquid chlorine, it will react with the substa...

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Problems solved by technology

Since chlorine is a very active element, it can react with most elements (or compounds). During the transportation of liquid chlorine, it will react with the substances in the pipeline or the pump body to produce impurities, which will cause blockage in the pump body, thus It affects the normal operation of the pump, affects the continuous and stable output of liquid chlorine, affects the chlorination reaction, and affects the product quality; and requires maintenance, cleaning and repair of the pump body, which affects production and wastes manpower and material resources, and the liquid pump is expensive. high cost

Generally, the unloading process of liquid chlorine tank trucks adopts the method of vaporization and chlorine removal. This method requires strict control of temperature and pressure, and regular inspections to remove and wash the vaporizer to prevent the production of nitrogen trichloride. The operation is complicated. If nitrogen trichloride is not cleaned in time, storage There is a certain security risk

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