A synthetic compressor safety protection pipeline system and control method

Abstract

The invention discloses a synthetic compressor safety protection pipeline system, which includes a nitrogen main pipe, a process air pipe, a first-stage sealing end and a synthetic compressor. The nitrogen main pipe and the process air pipe are connected in parallel to the first-stage sealing end, and the first-stage sealing The end communicates with the synthesis compressor, and a safety pipeline is provided on the nitrogen main pipe. The safety pipeline includes a nitrogen one-way valve and a safety valve. One end of the nitrogen one-way valve is connected with the nitrogen main pipe, and one end of the nitrogen one-way valve is connected with the safety valve and the manual valve for sealing gas of the nitrogen inlet synthetic compressor. A branch pipeline is arranged behind the nitrogen check valve on the nitrogen main pipe, and a safety valve is installed on the branch pipeline. A one-way valve and a safety valve are added to the synthesis compressor pipeline. The one-way valve can prevent the syngas from leaking into the medium-pressure nitrogen pipeline and release the pressure in time to ensure that the medium-pressure nitrogen main pipe is not polluted. At the same time, the safety valve can ensure that the pipeline is not Overpressure. The invention also discloses a control method for the safety protection pipeline system of the synthetic compressor.

Description

technical field [0001] The invention belongs to the technical field of pipeline protection, and particularly relates to a synthetic compressor safety protection pipeline system and a control method. Background technique [0002] The synthetic compressor process gas seal oil consists of two circuits (process gas and medium pressure nitrogen), which are used as backup for each other. Since the operation in 2012, there have been many occurrences of internal leakage of the one-way valve on the medium pressure nitrogen pipeline, and the shut-off valve FV12405 is not closed. As a result, the process gas leaks into the medium-pressure nitrogen pipeline, and the synthesis gas enters the medium-pressure nitrogen pipeline, and even causes Praxair's medium-pressure nitrogen safety valve upstream of the process to jump frequently, which seriously affects the safe operation of the system and personal safety. The leakage of process gas into the medium-pressure nitrogen pipeline leads to o...

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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