Preparation formula of high-flashing-point water-soluble demulsifying agent

Abstract

The invention relates to a formula of a high-flashing-point water-soluble demulsifying agent. The high-flashing-point water-soluble demulsifying agent comprises the following chemical raw materials in parts by weight: 30-50 parts of epoxypropane oxirane block polymer, 20-40 parts of alcohol solvent and 20-40 parts of water. The flashing point of the water-soluble demulsifying agent prepared by replacing methyl alcohol with the high-flashing-point alcohol solvent is greater than or equal to 65 DEG C, and the water-soluble demulsifying agent has relatively strong surface activity and relatively good hydrophilcity and lipophilicity. The high-flashing-point water-soluble demulsifying agent can be used for greatly reducing the risks of production, storage, transportation and field use, which are caused by a low-flashing-point demulsifying agent using methyl alcohol and water as solvents in a crude oil gathering and transportation process, and more importantly, the high-flashing-point water-soluble demulsifying agent can be used for solving the problem that the flashing point does not meet the safe export requirements.

Description

technical field [0001] The invention relates to a formulation of a water-soluble demulsifier with a high flash point. Background technique [0002] Water-soluble demulsifier is a kind of oilfield additive commonly used in the process of crude oil gathering and transportation in oilfields. It is mainly used for demulsification and dehydration of crude oil production fluid in oilfields. Separated from water to achieve the purpose of crude oil dehydration, so as to ensure the water content standard of crude oil export. The active ingredient of domestic water-soluble demulsifiers is propylene oxide ethylene oxide block polymer, which is obtained after dilution with methanol and water as solvents. [0003] The flash point of ordinary water-soluble demulsifiers used in oil fields is generally around 20°C. On the one hand, the lower flash point brings risks to the production, storage, transportation and field use of demulsifiers, which is likely to cause safety accidents. On the ...

AI Technical Summary

Problems solved by technology

[0003] The flash point of ordinary water-soluble demulsifiers used in oil fields is generally around 20°C. On the one hand, the lower flash point brings risks to the production, storage, transportation and field use of demulsifiers, which is likely to cause safety accidents. On the other hand, The methanol solvent used to dilute the demulsifier is highly toxic to the human body, has an anesthetic effect on the central nervous system, and has a special selective effect on the optic nerve and retina

More importantly, with the promotion and use of water-soluble demulsifiers around the world, especially in countries near the equator where the site temperature is higher than 30 ° C, the flash point of ordinary water-soluble demulsifiers has not reached the safe export requirements, greatly restricting the export of demulsifiers

[0004] The invention mainly aims at the problem that the low flash point of the water-soluble demulsifier product does not meet the safety export requirements, and provides a high-flash point water-soluble demulsifier product