Desulfurizer used for extraction of crude oil containing hydrogen sulfide and treatment of sewage containing hydrogen sulfide

Abstract

The invention discloses a desulfurizer used for extraction of crude oil containing hydrogen sulfide and treatment of sewage containing hydrogen sulfide. The desulfurizer comprises, by mass, 25 to 40% of hydroxyethyl-hexahydro-s-triazine, 5 to 10% of micro-molecular alcohol, 1 to 2% of an osmotic agent sodium sulfosuccinate, 1 to 2% of acetic acid, 0.1 to 0.2% of sodium acetate and 0.02 to 0.04% of an antifoaming agent, with the balance being water, wherein the micro-molecular alcohol is methanol, or ethanol or a mixture of methanol and ethanol, and the antifoaming agent is a water-soluble polyether or silicone oil antifoaming agent. The desulfurizer provided by the invention has a simple formula, is intermiscible with water in any ratio and can effectively reduce hydrogen sulfide in crude oil or sewage; the desulfurizer rapidly reacts with hydrogen sulfide and a reaction product is soluble in water and does not block a pipeline; moreover, an s-triazine main agent has good scale-inhibition, anti-scale and sterilization properties; and the hydrogen sulfide removing agent in the invention overcomes the problems that an alcamine desulfurizer has rapidly reduced desulphurization efficiency at high temperature and hydrogen sulfide removed through reaction may be reversibly released again, and has a temperature application range of 0 to 120 DEG C.

Description

technical field [0001] The invention relates to a desulfurizer used for the exploitation of crude oil containing hydrogen sulfide and the treatment of sewage containing hydrogen sulfide. Background technique [0002] Hydrogen sulfide is a colorless, highly toxic, acidic gas with a special smell of rotten eggs. Even low concentrations of hydrogen sulfide are highly irritating and toxic. Due to the presence of hydrogen sulfide in crude oil mining, gathering and transportation, and treatment of sulfur-containing sewage containing hydrogen sulfide, not only the corrosion of transmission pipelines, instruments and equipment, catalyst poisoning and damage often occur, but hydrogen sulfide is highly toxic and leaks It also poses a serious threat to personal safety. [0003] At present, there are many methods to deal with hydrogen sulfide at home and abroad, and desulfurization can be divided into dry desulfurization and wet desulfurization according to its weak acidity and strong ...

AI Technical Summary

Problems solved by technology

[0005] At present, the most widely used desulfurization agent is alcohol amine as the main agent. Alcohol amine uses its weak alkalinity to react with hydrogen sulfide to remove hydrogen sulfide. It has the characteristics of fast desulfurization rate and high efficiency under low temperature conditions. However, because the reaction only uses its alkalinity to react with hydrogen sulfide to form thiocyanate, the reaction is not complete and is balanced and reversible. Under higher temperature conditions, the desulfurization efficiency of alcohol amines decreases rapidly, and the hydrogen sulfide removed by the reaction will be released again.

Images