Non-condensable gas separation system and method based on ammonia system

Abstract

The invention discloses a non-condensable gas separation system and method based on an ammonia system. The non-condensable gas separation system based on the ammonia system is characterized in that anon-condensable gas collection point is arranged on a condensation unit of the ammonia system, and a bypass pipeline is arranged on a pipeline from a throttling unit to an evaporation unit in parallel; the non-condensable gas separation system is arranged between a gas outlet of the non-condensable gas collection point and the bypass pipeline; a nitrogen pressurizing unit, a non-condensable gas discharge and treatment unit and an ammonia water recovery unit are arranged in the non-condensable gas separation system; and the nitrogen pressurizing unit is used for realizing pressurizing separation of non-condensable mixed gas, separated ammonia water flows into a pipeline section behind the throttling unit and in front of the evaporation unit through the ammonia water recovery unit and the bypass pipeline in sequence, and the separated non-condensable gas is led to the arranged non-condensable gas discharge and treatment unit. According to the non-condensable gas separation system and method based on the ammonia system, a traditional physical cooling mode is changed, nitrogen pressurization is adopted as a main mode, cooling is adopted as an auxiliary mode, and different condensationpoint separation modes are utilized, so that separation is more sufficient, the efficiency is high, and the effect is good.

Description

technical field [0001] The invention is located in the field of refrigeration systems, and in particular relates to a non-condensable gas separation system and method based on an ammonia system. Background technique [0002] With the rapid development of the economy, refrigeration equipment plays an increasingly important role in food storage and transportation, and ammonia refrigeration systems are usually used to provide refrigeration for this purpose; the usual ammonia refrigeration systems are generally set to open screw compression Machine, evaporative condenser, evaporation temperature below -40 degrees. This working condition and characteristics lead to the phenomenon of more leakage points; thus non-condensable gas is produced. How to remove non-condensable gases has become an urgent problem to be solved. [0003] The way that non-condensable gas is mixed into the refrigeration system; for example: ①When filling the ammonia system with refrigerant and lubricating o...

AI Technical Summary

Problems solved by technology

The combination of these consequences not only reduces the cooling capacity and cooling coefficient of the device, but also may make the lubricating oil easy to oxidize and deteriorate, and aggravate the wear and tear of the compressor; the existence of non-condensable gas will affect the heat exchange of the condenser, making the condensation temperature and condensation pressure Elevation will lead to an increase in compressor power consumption, especially for ammonia refrigeration systems, because ammonia and air may explode at high temperatures, and non-condensable gases must be removed in time

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