An inter-section scale inhibition method for a centrifugal natural gas compressor set includes a method a, a method b or a method c. A heat exchanger is additionally arranged at the position between an inter-section separator outlet to a next section first stage impeller inlet, an outlet pipeline at the back of a scaling section of the centrifugal natural gas compressor set is connected with an inlet of the additionally arranged heat exchanger, an outlet of the additionally arranged heat exchanger is connected with an inlet of a cooler through a pipeline, an outlet of the cooler is connected with an inlet of a separator, an outlet of the separator is connected with an inlet of a heat exchange coil pipe arranged in the heat exchanger, and an outlet of the heat exchange coil pipe is connected with an inlet of a scaling section first stage impeller. High-temperature natural gases at an outlet behind the scaling section and low-temperature natural gases emitted from the separator are exchanged, and temperature at the separator outlet after heat exchange compensates external temperature loss and is higher than the critical temperature for generating the water dew point and the hydrocarbon dew point.

Inter-section scale inhibition method for centrifugal natural gas compressor set

The invention provides a pressurization device and method for an associated gas compressor. The pressurization device comprises an inlet pipeline, a connection pipeline and an outlet pipeline. A gas-liquid separation device is connected between the inlet pipeline and the connection pipeline, and the associated gas compressor is connected between the connection pipeline and the outlet pipeline. Associated gas enters the gas-liquid separation device through the inlet pipeline, then enters the associated gas compressor through the connecting pipeline to be separated by a gas-liquid separator of the associated gas compressor and pressurized, and is pressed into the outlet pipeline through a check valve. According to the pressurization device and method for the associated gas compressor provided by the invention, the associated gas is subjected to two-time separation before entering compressor, specifically, the associated gas is subjected to deep gas-liquid separation through the gas-liquid separation device and then subjected to secondary separation through the gas-liquid separator of the associated gas compressor; due to two-time gas-liquid separation, liquid in the associated gas is reduced, and the separated associated gas is pressurized by the associated gas compressor. The liquid check valve is added to the outlet pipeline, so that the service life of easily damaged parts of the compressor is prolonged.

Pressurization device and method for associated gas compressor

The utility model relates to a separating device for petroleum gas liquefaction, belonging to oilfield and the processing unit of the gas processing plant, which is composed of an air heat exchanger, a turbo compressor, a light hydrocarbon separator, a liquefied natural gas separator. The utility model is characterized in that the utility model is provided with a compressor, a birotor aircraft turbofan engine which is incorporated with the prime motor, a power turbine, a power turbine, a deep cooling expansion turbine, an intermediate pressure compressor, a generator, a gas vessel and a heat transfer cold box which are driven by the birotor aircraft turbofan engine. The utility model liquidizes the processed gas by the two-stage refrigeration of the by-pass air of the aerial engine and the compressed medium pressure air of the intermediate pressure compressor. The utility model can be directly modified from an aerial engine in order to decrease the cost of designing and manufacture.

Xing Shi

Papers

Separating device for petroleum gas liquefication