A volatile organic solvent condensation recovery device

Abstract

The invention provides a volatile organic solvent condensation and recycling device. The volatile organic solvent condensation and recycling device comprises a condenser, a mist arrester and a centrifugal type draught fan, wherein the condenser is communicated with an organic solvent steam inlet pipeline; the mist arrester is buckled on the upper part of the condenser and an exhausting chimney is additionally arranged at the upper part of the mist arrester; the centrifugal type draught fan is mounted between an outlet of the mist arrester and the exhausting chimney; the centrifugal type draught fan is connected with a PLC; and the PLC is used for controlling the rotating speed of the centrifugal type draught fan. After organic solvent steam from drying equipment enters the condenser, the organic solvent steam is uniformly distributed by a gas distribution separation plate and flows upwards; the organic solvent steam flows through a condenser coiled pipe filled with cold media and is subjected to heat exchanging and cooling, and then is condensed into liquid-state organic solvent to be collected into a liquid collector; and the solvent gas which is not completely condensed by the condenser flows upwards and passes through the dense hole net-shaped mist arrester to be coagulated into drops to flow into the liquid collector. The organic solvent steam which is not condensed passes through the exhausting chimney and is adsorbed by an adsorption tank filled with an adsorbent, so that the exhausted gas meets the environment-friendly requirements.

Description

technical field [0001] The invention relates to a volatile organic solvent condensation recovery device. Background technique [0002] In the process of surface hydrophobic modification of water-absorbing materials, equipment is generally used to graft or coat one or more layers of hydrophobic groups or organic substances on the inner and outer surfaces of the matrix material through chemical reactions. These hydrophobic groups or organic substances Before reacting to the surface of the matrix material, one or more organic solvents need to be added for the purpose of dissolution and dilution, so as to improve the reaction efficiency and quality. The organic solvent is only a consumable in the reaction process, not a component of the final product. Therefore, after the reaction is completed, the processed product must use a drying equipment to remove the organic solvent and recycle it. Otherwise, the volatilized organic solvent will bring serious environmental pollution and ...

AI Technical Summary

Problems solved by technology

However, if the existing organic solvent condensation recovery device is combined with drying equipment, the equipment that provides negative pressure needs to comprehensively consider factors such as the consumption of heat source, the nature of the volatile solvent, and the amount of volatilization. If the vacuum degree is too high, the solvent will volatilize. Too fast results in large heat loss and poor condensation effect

If a water ring vacuum pump is used, the solvent is insoluble in water and will escape into the atmosphere causing loss

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