Synthetic compressor lubricant for compressing multi-component hydrocarbon mixture gas

Abstract

The invention provides synthetic compressor lubricant for compressing a multi-component hydrocarbon mixture gas. The synthetic compressor lubricant consists of polyalkalene glycol synthetic oil serving as base oil and an additive. The synthetic compressor lubricant comprises the following components in percentage by weight: 90 to 97 percent of polyalkalene glycol synthetic oil, 0.05 to 2 percent of antioxidant, 0.01 to 2 percent of anti-rusting agent, 0.5 to 3 percent of oiliness agent, 0.01 to 0.5 percent of metal passivator, 0.5 to 5 percent of extreme-pressure antiwear agent and 0.001 to 0.01 percent of antifoaming agent. The synthetic compressor lubricant can resist dilution of a hydrocarbon gas to a lubricant, can adapt to the compression to the hydrocarbon gas, has good compatibility with a water vapor-containing gas mixture, and meets special requirement on the oil for a multi-component hydrocarbon mixture (such as flare gas) compressor system. The problem of dilution of the multi-component hydrocarbon mixture gas (such as the flare gas or gas) to the lubricant is successfully solved; accidents, such as stop, shaft locking and the like, of a compressor, caused by reducing of viscosity, are radically avoided; and the work stoppage loss and the worker labor intensity of enterprises are reduced.

Description

technical field [0001] The invention relates to a compressor lubricating oil composition using polyether synthetic oil as base oil, and the compression medium is light hydrocarbon gas such as petrochemical refinery torch gas or oil gas field gas. More specifically, the present invention relates to a synthetic compressor oil for use in the compression of multicomponent mixed hydrocarbon gases such as refinery flare gas. Background technique [0002] The compression of hydrocarbon gas is widely used in modern industry: such as the compression and transportation of oilfield associated gas, the collection and transmission of natural gas, the polymerization cycle gas of ethylene and propylene, the recovery of refinery gas and the chemical process will encounter hydrocarbons Compression of gases. In addition to light alkanes, the light hydrocarbon mixed gas contains nitrogen, carbon monoxide, oxygen, hydrogen, water vapor and other components. [0003] In oil refineries and petr...

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Problems solved by technology

[0016] The purpose of the present invention is to propose a synthetic compressor oil for compressing multi-component mixed hydrocarbon gas, to solve the problem of dilution of lubricating oil by multi-component mixed hydrocarbon gas (such as flare gas or gas gas), and fundamentally eliminate the Accidents such as compressor downtime and shaft holding caused by viscosity reduction can reduce the loss of downtime of enterprises and the labor intensity of workers

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