Ammonia synthesis device refrigeration system

Abstract

The invention provides an ammonia synthesis device refrigeration system. The ammonia synthesis device refrigeration system comprises a first-stage flash drum, a second-stage flash drum, a third-stage flash drum, a flash drum ammonia gas adjusting pipeline and an ammonia compressing knockout drum, wherein the first-stage flash drum, the second-stage flash drum and the third-stage flash drum are connected in series, the two ends of the serial connection are connected to the ammonia compressing knockout drum, and the two ends of the flash drum ammonia gas adjusting pipeline are connected to the first-stage flash drum and the third-stage flash drum. According to the ammonia synthesis device refrigeration system, redundant ammonia gas of the third-stage flash drum of an ammonia compressor is introduced into the first-stage flash drum, liquid ammonia of -1 DEG C in the ammonia compressing knockout drum of a synthesis system is introduced into the third-stage flash drum of the ammonia compressor, and therefore the evaporation capacity in the flash drums can be reduced, the load of the ammonia compressor can be lowered, and the cooling capacity of the system can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of synthetic ammonia cooling equipment, and in particular relates to a refrigeration system of a synthetic ammonia device. Background technique [0002] The traditional ammonia compressor anti-surge system is to return the compressed gas from the three-stage outlet of the ammonia compressor to the first-stage, second-stage, and third-stage flash tanks to supplement the intake of the ammonia compressor, and at the same time, the liquid ammonia in the refrigeration system is in a closed cycle state , this method increases the load of the ammonia compressor in the high temperature environment in summer, the load of the water cooler at the outlet of the ammonia compressor is too high, and the heat exchange capacity decreases, resulting in overpressure at the outlet of the ammonia compressor, which seriously restricts the safety and stability of the device in high temperature weather. load operation. Contents o...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems that the load of the ammonia compressor is too high, the load of the water cooler at the outlet of the ammonia compressor is too high, the heat exchange capacity is reduced, the outlet of the ammonia compressor is overpressured, and the high-load operation of the device in high-temperature weather is not safe and stable. The invention provides a kind of ammonia compressor whose load is not high, the load of the water cooler at the outlet of the ammonia compressor is not high, the heat exchange capacity is improved, the outlet of the ammonia compressor is not overpressured, and the device operates under high load in high temperature weather, which is safe and stable and highly refrigerated. system

Images