Mechanical type refrigerating cold trap system for sewage source of pharmaceutical factory

Abstract

The invention discloses a mechanical type refrigerating cold trap system for a sewage source of a pharmaceutical factory, and relates to the technical field of pharmaceutical factory cold trap separation. The system mainly comprises a sewage source refrigerating cold trap system, a jacket type ice melting system and an excessive cold recycling system, wherein a refrigerant working medium loop in the sewage source refrigerating cold trap system and a circulating water loop in the jacket type ice melting system separately define a closed-type cycle; an ice melting cold water pipeline in an excessive cold recycler is connected to a cold trap and a pharmaceutical factory sewage tank; and a condensing gas pipeline of the excessive cold recycling system is connected to the cold trap and the excessive cold recycler. The sewage source refrigerating cold trap system adopts pharmaceutical factory sewage with relatively stable flow as a condenser coiled tube side heat exchange medium, and can improve system operation stability and operation efficiency; a refrigerating system adopts two-stage compression, and can meet gas trap temperature requirements of different gases; the jacket type ice melting system recycles heat at the high-temperature condenser coiled tube side for removing ice blockage for the cold trap; and the excessive cold recycler can effectively recycle cold amount of condensed gas and ice molten 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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