Filter tank of BOG compressor

Abstract

The invention discloses a filter tank of a BOG compressor. The filter tank of the BOG compressor comprises a tank body, wherein a filter plate is horizontally arranged in the tank body; the filter plate divides the tank body into a first gas bin on the lower layer and a second gas bin on the upper layer; the tank body is provided with a gas inlet joint tube, a gas outlet joint tube and a slag outlet joint tube; the gas inlet joint tube is arranged on one side of the outer wall of the tank body and communicates with the first gas bin; the gas outlet joint tube is arranged on the top of the tankbody and communicates with the second gas bin; and the slag outlet joint tube is arranged on the bottom of the tank body and communicates with the first gas bin. The filter tank of the BOG compressorhas the advantages that the filter tank is suitable for a nitrogen reverse blowing device of the BOG compressor, when a filter on a gas inlet tube of the BOG compressor is blown by nitrogen, impurities at the position of the filter are blown into the filter tank and are cleaned in a centralized manner, an impurity and gas separating effect is good, and lots of impurities are accommodated, the impurities are discharged.

Description

technical field [0001] The invention relates to the field of industrial compressors, in particular to a filter tank of a BOG compressor. Background technique [0002] At present, a large amount of BOG gas with a high dew point will be produced during the unloading of LNG ships and equipment purging and replacement at the LNG receiving station, and the suction port of the BOG compressor is equipped with a 55-mesh conical filter. During the recovery of BOG, due to the temperature lower than Due to the dew point of part of the gas, it will accumulate a liquid mesh at the conical filter, resulting in a clogging effect, resulting in a decrease in the inlet pressure of the BOG compressor and unable to operate normally. This condition is especially obvious during the loading and unloading of LNG. When a liquid film appears on the inlet filter of the BOG compressor, the process operator is currently injecting nitrogen by connecting the nitrogen hose to the nitrogen injection interf...

AI Technical Summary

Problems solved by technology

Although this technical solution can solve the above-mentioned technical problems, there are still defects. The solution is to reversely purge the filter from the air outlet of the compressor, and the nitrogen gas will move backward from the compressor. It is equipped with a flow meter, so it is easy to cause damage to the flow meter when purging

On the other hand, part of the nitrogen remains in the compressor, and when it works again, it is easy to cause the compressor to start under pressure and affect the service life of the compressor

[0004] For this reason, the applicant has developed a kind of nitrogen back-purging device for BOG compressor, and the existing filter tank is not suitable for the use of this nitrogen back-purging device, so the applicant has developed a filter tank of BOG compressor to use Convenient use of the nitrogen back-purging device

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