VCM (Vinyl Chloride Monomer) rectification separation device special for high-boiling residues and separation method

Abstract

The invention relates to the technical field of separation devices, and in particular relates to a VCM (Vinyl Chloride Monomer) rectification separation device special for high-boiling residues and a separation method; the VCM rectification separation device special for high-boiling residues comprises a high-boiling residue storage tank, a separation tower, an intermediate tank, a low-boiling tower, a condenser, a backflow tank and a product storage tank; a feeding pipe is fixedly connected onto the feeding end of the high-boiling residue storage tank; the discharging end of the high-boiling residue storage tank and the feeding end of the separation tower are fixedly connected together through a first pipeline; a first gas outlet pipe is fixedly connected onto the gas-liquid outlet end of the separation tower; and the liquid-phase outlet end of the separation tower and the feeding end of the intermediate tank are fixedly connected together through a second pipeline. The VCM rectification separation device special for high-boiling residues disclosed by the invention is reasonable and compact in structure and convenient to use; by means of matched use of the high-boiling residue storage tank, the separation tower, the intermediate tank, the low-boiling tower, the condenser, the backflow tank and the product storage tank, the purposes of purifying and decolourizing high-boiling residues are achieved; the VCM rectification separation device special for high-boiling residues has the characteristics of being steady to operate and good in purifying and decolourizing effect; the additional value of high-boiling residues is increased; and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of chemical separation devices, and relates to a special VCM rectification separation device and separation method for high boilers. Background technique [0002] High boiling matter is a unique organic waste in the production process of the polyvinyl chloride resin industry. It is also a heavy fraction produced by the distillation of vinyl chloride in the production process of vinyl chloride monomer. Its appearance is a yellow-black flammable liquid. The main extract of high-boiler products is 1,1-dichloroethane. Its use mainly involves chemical industry and chemical industry. It is mainly used as adhesives, coatings, insulating materials, synthetic fibers, chemical intermediates or solvents, and can also be used in Fields such as rubber solutions or varnishes. The high boilers produced by the vinyl chloride high boiling tower rectification unit are clearly listed in the 11th category of the "National Haza...

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Problems solved by technology

[0003] The present invention provides a special VCM rectification and separation device and separation method for high boilers, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of existing high boiling point Boilers with high impurity content can only be recycled at a low price, and high-boilers contain vinyl chloride gas, which pollutes the environment and cannot meet the needs of high-yield continuous production.

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