Synthetic compressor safety protection pipeline system and control method

Abstract

The invention discloses a synthetic compressor safety protection pipeline system which comprises a nitrogen main pipe, a process gas pipe, a first-stage sealing end and a synthetic compressor, whereinthe nitrogen main pipe and the process gas pipe are connected in parallel and then communicate with the first-stage sealing end, the first-stage sealing end communicates with the synthetic compressor, and a safety pipeline is arranged on the nitrogen main pipe. The safety pipeline comprises a nitrogen one-way valve and a safety valve, one end of the nitrogen one-way valve communicates with the nitrogen main pipe, and one end of the nitrogen one-way valve communicates with the safety valve and a nitrogen synthetic compressor sealing gas manual valve. A branch pipeline is arranged behind the nitrogen one-way valve on the nitrogen main pipe, and the safety valve is installed on the branch pipeline. The one-way valve and the safety valve are additionally arranged on the synthetic compressor pipeline, the one-way valve can prevent synthesis gas from leaking into a medium-pressure nitrogen pipeline, then pressure is relieved in time, it is guaranteed that the medium-pressure nitrogen main pipe is not polluted, and meanwhile the safety valve can guarantee that the pipeline is not overpressure. The invention further discloses a control method of the synthetic compressor safety protectionpipeline system.

Description

technical field [0001] The invention belongs to the technical field of pipeline protection, and in particular relates to a synthetic compressor safety protection pipeline system and a control method. Background technique [0002] Synthetic compressor process gas seal oil consists of two circuits (process gas and medium-pressure nitrogen), which serve as backups for each other. Since it was put into operation in 2012, internal leakage of the one-way valve on the medium-pressure nitrogen pipeline and shut-off valve FV12405 have repeatedly occurred. As a result, the process gas leaked into the medium-pressure nitrogen pipeline, the synthesis gas entered the medium-pressure nitrogen pipeline, and even caused the medium-pressure nitrogen safety valve of Praxair upstream of the process to trip frequently, seriously affecting the safe operation of the system and personal safety. Leakage of process gas into the medium-pressure nitrogen pipeline leads to overpressure of the medium-pr...

AI Technical Summary

Problems solved by technology

[0002] Synthetic compressor process gas seal oil consists of two circuits (process gas and medium-pressure nitrogen), which serve as backups for each other. Since it was put into operation in 2012, internal leakage of the one-way valve on the medium-pressure nitrogen pipeline and shut-off valve FV12405 have repeatedly occurred. This caused process gas to leak into the medium-pressure nitrogen pipeline, resulting in synthesis gas entering the medium-pressure nitrogen pipeline, and even causing the medium-pressure nitrogen safety valve of Praxair upstream of the process to trip frequently, seriously affecting the safe operation of the system and personal safety

Leakage of process gas into the medium-pressure nitrogen pipeline leads to overpressure of the medium-pressure nitrogen pipeline. At the same time, the overpressure also brings safety hazards to the entire group, so technical transformation is necessary

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