Test run system and method of low temperature air compressor

Abstract

The invention relates to a test run system and method of a low temperature air compressor. The system comprises a liquid nitrogen supplying device, an air temperature device, a temperature regulating device, a compressor inlet buffer tank, a compressor and a compressor outlet buffer tank. The liquid nitrogen supplying device feeds the liquid nitrogen to the air temperature device to evaporate the liquid nitrogen into nitrogen; the nitrogen evaporated by the air temperature device and the nitrogen from the compressor outlet buffer tank are converged and then enter the temperature regulating device to be mixed with the liquid nitrogen from the liquid nitrogen supplying device, and the temperature of the nitrogen output from the temperature regulating device is stabilized to be equal to the air inlet temperature of the compressor; the temperature regulating device feeds the nitrogen with the temperature stabilized to the compressor inlet buffer tank, and the compressor feeds the compressed nitrogen to the compressor outlet buffer tank; and the compressor outlet buffer tank feeds the buffered nitrogen to the temperature regulating device. The test run system and method can stably control the temperature of the inlet nitrogen of the compressor, can reduce consumption of the liquid nitrogen simultaneously and reduces device using amount and floor space.

Description

technical field [0001] The invention relates to the technical field of commissioning of cryogenic gas compressors, in particular to a commissioning system and method of cryogenic gas compressors. Background technique [0002] Low-temperature substances such as liquefied natural gas, liquid ethylene, liquid propane, and butane are inevitably evaporated into corresponding low-temperature gaseous substances due to leakage of ambient heat during storage and transportation (such as low-temperature natural gas from liquefied natural gas to gaseous state, liquid ethylene to gaseous state, etc.) gaseous low-temperature ethylene, liquid propane and butane into low-temperature propane and butane gas, etc.), these evaporated gases must be recovered, otherwise it will cause overpressure of equipment and pipelines, resulting in safety hazards and waste of useful resources . The use of compressors to compress these cryogenic gases is one way to recover them. Different from ordinary comp...

AI Technical Summary

Problems solved by technology

This greatly increases the number of equipment used and the occupied area of ​​the system. When the processing capacity of the compressor is very large, the existing technology uses too many air heaters, which is difficult to realize in terms of investment and occupied area.

Images