Crude oil desulfurizer

There are more than 100 kinds of sulfide identified in crude oil, which can be divided into three categories: the first type is acidic sulfur-containing compounds, mainly including hydrogen sulfide and mercaptan; The second category is neutral sulfur compounds, mainly sulfur ether and disulfide; The third type is good thermal stability sulfide, mainly thiophene and tetrahydrothiophene, phenylthiophenol and so on. Sulfide is usually smelly, highly toxic and corrosive, which has bad influence on the crude oil gathering, processing and the quality of finished oil. Sulfide dissolved in crude oil will seriously corrode pipelines and equipment, threatening personal safety. In the process of crude oil refining, sulfide will lead to a series of problems such as equipment corrosion, catalyst inactivation, and unqualified sulfur content in finished oil.

The sulfides in petroleum are mainly divided into inorganic sulfides and organic sulfides. The inorganic sulfides are easier to be removed, while the organic sulfides require different desulfurization technologies. Desulphurizer is a chemical used to remove sulfur compounds in petroleum to improve the quality of petroleum and reduce environmental pollution and equipment corrosion. Among them, crude oil desulfurizer is an oil-soluble heterocycle compound used for chemical removal of hydrogen sulfide and mercaptan in crude oil, which produces irreversible reaction with hydrogen sulfide, the reaction speed is fast, and the increase of temperature is conducive to the removal of mercaptan.

Our company’s desulfurization products are triazine compounds,

The triazine compound prepared by our company not only improves the reaction efficiency of the reaction with hydrogen sulfide, but also improves the lipophilicity. The incomplete formaldehyde can denature the protein in the SRB, TGB and FB anaerobic bacteria parasitized in the oil and gas gathering and transportation pipeline, thus effectively inhibiting the bacterial multiplication and growth.

The combination of organic phosphonic acid in the product can effectively reduce the pH value of the product and delay the scaling trend of carbonate and sulfate in the highly mineralized water environment. Moreover, organic phosphonic acid is a very effective scale inhibitor, preventing carbonate and sulfate scaling through crystal distortion and dissolution limit effect.

Heterocyclic organic amines are organic amines with high boiling point, which can react with hydrogen sulfide in crude oil to form stable thiazine compounds under high temperature conditions.

Through the van der Waals adsorption between the N atom on the imidazoline ring and the Fe atom on the inner surface of the oil and gas gathering and transportation pipeline, the water-soluble imidazoline forms a dense protective film on the inner surface of the pipeline, thereby isolating the direct contact between the corrosive medium and the metal surface, and playing an effective anti-corrosion role.

The high temperature resistant desulfurizer for oil and gas fields provided by the invention has good desulfurization effect under the high temperature condition of 90℃, stable performance, cheap and easy to obtain raw materials, low cost, and is conducive to popularization and application in oil and gas fields.