Organic solvent comprehensive recovery liquid-phase membrane dehydration equipment and process thereof

Abstract

The invention provides organic solvent comprehensive recovery liquid-phase membrane dehydration equipment and a process thereof. The organic solvent comprehensive recovery liquid-phase membrane dehydration equipment comprises a feeding pump, a precision filter, a preheater, a heater, a membrane assembly, a finished product condenser, a back pressure valve, an activated carbon adsorber, a finished product tank, a penetrating fluid condenser, a penetrating fluid tank, a vacuum unit, a tail gas condenser and a tail gas condensate tank. the feeding pump, the precision filter, the preheater, the heater, the membrane assembly, the finished product condenser, the back pressure valve, the activated carbon adsorber and the finished product tank are sequentially connected through pipelines. A liquid phase dehydration mode is adopted, and compared with a gas phase dehydration mode, 80% or more of a heat source for heating raw materials and 80% or more of circulating water for cooling products can be saved; the method is completely operated under a liquid phase condition, so that the safety is higher; the activated carbon adsorber is arranged on the pipeline, so that the product purity and cleanliness can be improved; and a cooling recovery device is arranged at an outlet of the vacuum unit, organic matter emission is reduced, and environmental protection is facilitated.

Description

technical field [0001] The invention belongs to the technical field of pharmaceutical and chemical equipment, and in particular relates to a liquid-phase membrane dehydration equipment for comprehensive recovery of organic solvents. Background technique [0002] In the existing pervaporation membrane organic solvent dehydration recovery process, a large number of heat sources are required to vaporize the organic solvent and water together to complete the dehydration, and then use circulating water to liquefy the finished product and cool it to room temperature. [0003] Patent document CN201710476235.1 provides a pervaporation membrane organic solvent dehydration equipment, which gasifies organic solvent raw materials and water together, but requires a large amount of heat source during the gasification process, consumes a lot of energy, and exhaust gas The concentration of organic matter in the discharge also does not meet environmental protection requirements. Contents o...

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Problems solved by technology

[0003] Patent document CN201710476235.1 provides a pervaporation membrane organic solvent dehydration equipment, which gasifies organic solvent raw materials and water together, but requires a large amount of heat source during the gasification process, consumes a lot of energy, and exhaust gas The concentration of organic matter in the discharge does not meet environmental protection requirements

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