The first set of mixed hydrocarbon rectification desulfurization unit in Northwest Oilfield was put into operation

Sinopec News.
com Xun Tahe Oilfield crude oil negative pressure gas stripping desulfurization process, the mixed hydrocarbons produced after the gas stripping gas condensation is high in hydrogen sulfide, the previous treatment process is the alkali elution sulfur process, the desulfurization effect is good, but the desulfurization cost is high.
Disposal of waste lye is difficult, corrosive to equipment, has safety risks, and is not environmentally friendly
.

To this end, the Petroleum Engineering Technology Research Institute of Northwest Oilfield Branch carried out technical research, using the idea of ​​physical desulfurization, using the principle of rectification and gas-liquid equilibrium, and based on the boiling points and relative volatilization of hydrogen sulfide, part of organic sulfur and various components in mixed hydrocarbons.
The difference in degree of hydrogen sulfide and part of organic sulfur are separated from mixed hydrocarbons
.

The mixed hydrocarbon rectification desulfurization process reduces the traditional alkali elution sulfur process from level 4 to level 1, avoiding secondary pollutants, greatly shortening the treatment process, and greatly simplifying production operations
.

In addition, a mixed-hydrocarbon rectification desulfurization model was established, and key technical parameters such as rectification temperature, pressure, reflux ratio, and tower temperature were established to achieve precise control of the separation of sulfur components
.

After the technical transformation of mixed hydrocarbon fractionation and desulfurization technology, the operating cost will be reduced by 92.
8 yuan/ton, and the quality will increase by 300 yuan/ton
.

(Li Jing)