A mechanical refrigeration cold trap system for pharmaceutical factory sewage source

Abstract

The invention discloses a sewage source mechanical refrigeration cold trap system of a pharmaceutical factory, which relates to the technical field of cold trap separation in a pharmaceutical factory. Wherein the refrigerant working fluid loop in the sewage source refrigeration cold trap system and the circulating water loop in the jacketed ice-melting system respectively constitute a closed cycle, and the ice-melting cold water pipeline in the residual cold recovery device is connected to the cold trap The condensate gas pipeline of the waste cold recovery system is connected with the sewage tank of the pharmaceutical factory and the cold trap and the waste cold recovery device. The sewage source refrigeration cold trap system uses relatively stable pharmaceutical factory sewage as the heat exchange medium on the side of the condenser coil, which can improve system operation stability and operation efficiency; the refrigeration system adopts two-stage compression, which can meet the different capture temperature requirements of different gases; The jacketed ice-melting system recovers the heat from the side of the high-temperature condenser coil to de-ice the cold trap; the residual cold recoverer can effectively recover the cooling capacity of condensed gas and ice-melting water.

Description

technical field [0001] The invention relates to the technical field of cold trap separation in pharmaceutical factories, in particular to a mechanical refrigeration cold trap system for sewage sources in pharmaceutical factories. Background technique [0002] At present, domestic cold traps mostly use liquid nitrogen direct expansion and thermoelectric refrigeration. Liquid nitrogen direct expansion refrigeration has a series of problems such as high cost and difficult control; thermoelectric refrigeration is relatively simple, but there are also problems such as low efficiency and insufficient use of high-grade energy. In addition, when the gas is separated in the cold trap, the water vapor in the air exchanges heat with the refrigerant working fluid and then solidifies into ice crystals that adhere to the surface of the heat transfer coil, increasing the heat transfer resistance, which is not conducive to the normal operation of the refrigeration cycle. [0003] Pollutant...

AI Technical Summary

Problems solved by technology

Liquid nitrogen direct expansion refrigeration has a series of problems such as high cost and difficult control; thermoelectric refrigeration is relatively simple, but there are also problems such as low efficiency and insufficient use of high-grade energy

In addition, when the gas is separated in the cold trap, the water vapor in the air exchanges heat with the refrigerant working fluid and then solidifies into ice crystals that adhere to the surface of the heat transfer coil, increasing the heat transfer resistance, which is not conducive to the normal operation of the refrigeration cycle

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