Corrosion inhibition antisludging agent special for ethylene compression system

Abstract

The invention discloses a corrosion inhibition and scale inhabitation agent specially used for an ethylene compression system, belonging to the chemical engineering technical field. The compositions by weight percentage of the corrosion inhibition and scale inhabitation agent are: 20 to 35 percent of ethylenediamine, 1 to 5 percent of imidazoline, 0.1 to 1 percent of sodium hexametahposphate and 60 to 75 percent of water. The corrosion inhibition and scale inhabitation agent is a composite organic product and is a special corrosion inhibition and scale inhabitation agent developed for the ethylene compression system; the corrosion inhibition and scale inhabitation effect is good and can completely meet the requirements of the ethylene compression system; and the corrosion inhibition and scale inhabitation agent replenishes the blank of corrosion inhibition and scale inhabitation agent of the type. Simultaneously, the corrosion inhibition and scale inhabitation agent is applied to an oil and gas well and a pipeline in which sulfurated hydrogen, carbon dioxides and water coexist, which can play a good part in corrosion inhibition and scale inhabitation.

Description

1. Technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a corrosion and scale inhibitor specially used for ethylene compression systems. 2. Background technology [0002] At present, the ethylene compression system is five-stage compression, with cooling water between the stages, and the outlet gas of the fifth stage is cooled by cooling water, and then cooled by low-temperature materials and propylene refrigerant. The interstage condensate is divided into two parts: heavy component and light component. The heavy component is passed through the gasoline stripper to obtain pyrolysis gasoline fraction; the light component is passed through the condensate stripper to obtain C3 and light hydrocarbon condensate above C3. Since the outlet of the first three stages of the compressor is equipped with an acid gas removal system (alkali washing or alcohol amine liquid-alkali washing) to remove CO in the cracked gas 2 a...

AI Technical Summary

Problems solved by technology

There are many types of corrosion and scale inhibitors currently in use, but no corrosion and scale inhibitors completely targeted at ethylene compression systems have been reported

However, the use of existing corrosion and scale inhibitors is not highly targeted, and it is difficult to meet the requirements of ethylene compression systems for corrosion and scale inhibition, and the effect of corrosion and scale inhibition is relatively poor.

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