氨冷冻压缩机密封系统改造总结

A SUMMARY OF RETROFIT TO SEAL SYSTEM OF AMMONIA REFRIGERATION COMPRESSOR

分析合成氨装置氨冷冻压缩机密封系统存在的问题,有针对性地对压缩机及密封系统进行改造,由机械浮环组合密封改为双端面串联式干气密封。改造后氨冷冻压缩机密封系统运行平稳,密封效果很好,保证了液氨的产品质量,降低了密封的固定成本及维护费用。

The problems existed in seal system of ammonia refrigeration compressor in ammonia plant are analyzed and the targeted retrofit to both the compressor and the seal system is implemented, i.e. the combined mechanical floating ring seal is changed to the double-end tandem dry gas seal. After the retrofit the running of the seal system of ammonia refrigeration compressor is stable with a good sealing effect and the product quality of liquid ammonia is guaranteed and both the fixed cost and maintenance cost reduced.