Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for deep desulfurization of gasoline and equipment for deep desulfurization of gasoline

A deep desulfurization and gasoline technology, applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc., can solve the problems of reduced sulfide extraction, excessive impurities, unfavorable hydrogenation units, etc., and achieve the effect of avoiding large losses.

Active Publication Date: 2020-08-18
CHINA PETROLEUM & CHEM CORP +1
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional liquid-liquid solvent extraction usually has low desulfurization efficiency, and absorbs more non-sulfide hydrocarbons, which need to be washed and separated later, and the separated sulfur-containing materials also carry more impurities, which is not conducive to transportation. In particular, the recovered solvent is often incompletely regenerated, resulting in a decline in the ability to extract sulfides when the solvent is recycled.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for deep desulfurization of gasoline and equipment for deep desulfurization of gasoline
  • Method for deep desulfurization of gasoline and equipment for deep desulfurization of gasoline
  • Method for deep desulfurization of gasoline and equipment for deep desulfurization of gasoline

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0079] In the present invention, there is no special limitation on the preparation method of the adsorbent, and there is no special limitation on the shape of the adsorbent.

[0080] Preferably, the sulfur content in the adsorbed light fraction obtained after the adsorbent adsorption step is ≯10 μg / g.

[0081] Solvent extraction under preferred conditions related to the present invention is provided below:

[0082]The solvent extraction transfers the thiophene-based sulfur compounds in the middle fraction to the extraction solvent to form a sulfur-containing solvent.

[0083] Preferably, the solvent extraction is carried out in an extractive distillation tower, and the middle fraction obtained after fractionation enters the tower from the middle part of the extractive distillation tower, and the extraction solvent enters the tower from the upper part of the extractive distillation tower, Under the selectivity of the solvent, the thiophene-based sulfur compounds in the middle ...

Embodiment 1

[0177] This embodiment adopts figure 1 The equipment shown in Table 1 performs advanced desulfurization treatment on the gasoline feedstock A.

[0178] The gasoline A is fractionated into light fraction, middle fraction and heavy fraction. The fractionation temperature of light fraction and middle fraction is 60°C, and the fractionation temperature of middle fraction and heavy fraction is 120°C. The yields (by mass fraction) of light fraction, middle fraction and heavy fraction after fractionation are about 20%, 45%, and 35%, respectively.

[0179] In the lye extraction system, the volume ratio of light fraction and lye in contact is 8:2, the temperature is 25°C, and the pressure is 0.6MPa, and the light fraction after lye extraction is obtained; the sulfur-containing alkali that has absorbed mercaptan The liquid is oxidized under the action of ARC-01 catalyst. During the oxidation process, the amount of air injected is 2.4 times the theoretical amount, the pressure during oxid...

Embodiment 2

[0203] This embodiment adopts figure 2 The equipment shown is for advanced desulfurization of gasoline feedstock E.

[0204] The gasoline E is fractionated into light fraction, middle fraction and heavy fraction. The fractionation temperature of light fraction and middle fraction is 55°C, and the fractionation temperature of middle fraction and heavy fraction is 120°C. The yields (in terms of mass fraction) of light fraction, middle fraction and heavy fraction after fractionation are about 25%, 35%, and 40%, respectively.

[0205] In the adsorption system for light fractions, the adsorbent used is SSA-01. The temperature of the adsorption contact is 140°C, the pressure is 0.6MPa, and the liquid hourly space velocity is 0.5h -1 . The sulfur content of the light fraction after adsorption is ≯1μg / g.

[0206] In the solvent extraction system, the middle fraction obtained after the fractionation is subjected to solvent extraction distillation in a solvent extraction distillati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of hydrocarbon material refining and discloses a method and device for deep desulfurization of gasoline. The method comprises 1, fractionating gasoline raw materialsto obtain a light fraction, a middle fraction and a heavy fraction, 2, contacting the light fraction and an alkaline solution for alkali solution extraction, then oxidizing the sulfur-containing alkali solution, contacting the oxidized sulfur-containing alkali solution and a hydrocarbon solvent and carrying out reverse extraction treatment, or contacting the light fraction and an adsorbent, 3, contacting the middle fraction and an extraction solvent, carrying out solvent extraction, and carrying out distillation to separate sulfides from the sulfur-containing solvent, 4, contacting the heavyfraction and a hydrodesulfurization catalyst, and carrying out selective hydrodesulfurization, and 5, mixing the light fraction subjected to alkaline solution extraction or adsorption, the heavy fraction subjected to hydrogenation and the middle fraction subjected to solvent extraction to obtain a gasoline product. The method and device can acquire a lower sulfur gasoline product without a large octane number loss.

Description

technical field [0001] The present invention relates to the refining field of hydrocarbon materials, in particular, to a method for deep desulfurization of gasoline and a device for deep desulfurization of gasoline, and more specifically, to a kind of sulfur-containing gasoline through hydrogenation and non-hydrogenation A combination of deep desulfurization process. Background technique [0002] As we all know, the emission of toxic and harmful substances in automobile exhaust seriously affects the air quality. For this reason, countries all over the world have set stricter and stricter standards for the quality of oil used as engine fuel. From January 1, 2013, my country has implemented No. IV emission standards nationwide, and has implemented No. V emission standards in Beijing, Shanghai and other major cities. No. Ⅳ and No. Ⅴ emission standards respectively stipulate that the sulfur content in motor gasoline shall not exceed 50 μg / g and 10 μg / g. [0003] The sulfur in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/202C10G2400/02
Inventor 潘光成赵杰习远兵唐文成李涛常春艳赵丽萍吴明清陶志平田龙胜褚阳李明丰胡志海
Owner CHINA PETROLEUM & CHEM CORP