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System and method for catalyzing hydrocarbon for recombinant production of high-quality gasoline

A high-quality, heavy gasoline technology, used in gasoline stabilization, refined hydrocarbon oil, petroleum industry, etc., to achieve the effect of low sulfur content and low olefin content

Active Publication Date: 2012-11-14
丁冉峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasingly stringent environmental protection requirements and the continuous improvement of gasoline and diesel standards, the existing catalytic hydrocarbon processing method through fractionation tower fractionation shows the following deficiencies One is that the quality of gasoline and diesel oil produced by this treatment method needs to be improved: the olefin content of gasoline is on the high side, and the octane number (RON) is on the low side, and the cetane number of diesel oil is on the low side, and the stability does not meet the requirements; The above-mentioned processing method cannot produce gasoline of various grades at the same time, and the product variety is single; the third is that the ratio of the produced diesel oil and gasoline does not match the market demand, diesel oil cannot meet the demand, and gasoline supply exceeds demand
The improvement of catalytic cracking process or catalyst cannot fundamentally solve the problem of sulfur. Hydrodesulfurization of catalytic cracking feedstock is impossible to be applied on a large scale due to large investment, high operating costs, and limited conditions of existing refineries. Refineries for sour crude oils are not suitable, and over-reduction of olefins in catalytic cracking units can exacerbate light products and gasoline octane number (RON) losses

Method used

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  • System and method for catalyzing hydrocarbon for recombinant production of high-quality gasoline
  • System and method for catalyzing hydrocarbon for recombinant production of high-quality gasoline

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Experimental program
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Effect test

Embodiment 1

[0035] Such as Picture 1-1 Shown is a schematic flow chart of one of the embodiments of the present invention. The distillation range is 30-205°C, the sulfur content is 100ppm, the mercaptan content is 5ppm, the olefin content is 30% (v), the diene content is 0.1% (v), the aromatic content is 15% (v), octane The alkane number (RON) is 89 and the density is 728 kg / m 3 The stable gasoline (catalyzed gasoline) is first hydrotreated in the hydrogenation unit 3-1 with a flow rate of 100,000 tons / year, and the catalyst in the hydrogenation unit 3-1 is a selective hydrogenation catalyst GHT-20; The volume space velocity ratio of the hydrogenation unit 3-1 is 2; the hydrogen / oil volume ratio is 150; the operating temperature is 230° C., and the operating pressure is 0.6 MPa (absolute); The tower top temperature of tower 1 is 82 ℃, and tower bottom temperature is 190 ℃, and tower top pressure is 0.2MPa (absolute), and tower bottom pressure is 0.25MPa (absolute), fractionation obtai...

Embodiment 2

[0056] Such as Figure 1-2 Shown is a schematic flow chart of Embodiment 2 of the present invention. The distillation range is 30-205°C, the sulfur content is 2000ppm, the mercaptan content is 50ppm, the olefin content is 40% (v), the diene content is 1.0% (v), the aromatic content is 19% (v), octane The alkane number (RON) is 91 and the density is 728 kg / m 3 The stable gasoline (catalyzed gasoline) is first hydrotreated in the hydrogenation unit 3-1 with a flow rate of 100,000 tons / year, and the catalyst in the hydrogenation unit 3-1 is a selective hydrogenation catalyst GHT-20; The volume space velocity ratio of the hydrogenation unit 3-1 is 3; the hydrogen / oil volume ratio is 200; the operating temperature is 240° C., and the operating pressure is 1.0 MPa (absolute); The tower top temperature of tower 1 is 86 ℃, and tower bottom temperature is 192 ℃, and tower top pressure is 0.2MPa (absolute), and tower bottom pressure is 0.25MPa (absolute), fractionation obtains light ...

Embodiment 3

[0060] Such as Figure 1-2 Shown is a schematic flow chart of the third embodiment of the present invention. The distillation range is 30-205°C, the sulfur content is 2000ppm, the mercaptan content is 50ppm, the olefin content is 40% (v), the diene content is 1.0% (v), the aromatic content is 19% (v), octane The alkane number (RON) is 91 and the density is 728 kg / m 3 The stable gasoline (catalyzed gasoline) is first hydrotreated in the hydrogenation unit 3-1 with a flow rate of 100,000 tons / year, and the catalyst in the hydrogenation unit 3-1 is a selective hydrogenation catalyst GHT-20; The volume space velocity ratio of the hydrogenation unit 3-1 is 3; the hydrogen / oil volume ratio is 200; the operating temperature is 240° C., and the operating pressure is 1.0 MPa (absolute); The tower top temperature of tower 1 is 86 ℃, and tower bottom temperature is 192 ℃, and tower top pressure is 0.2MPa (absolute), and tower bottom pressure is 0.25MPa (absolute), fractionation obtain...

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Abstract

The invention discloses a system and a method for preparing high-quality gasoline by recombination of catalytic hydrocarbon. The system comprises a distilling apparatus and an extraction system, and is characterized in that a front hydrogenation unit is connected with the distilling apparatus; the upper part of the distilling apparatus is provided with a light-gasoline pipeline, and the lower part of the distilling apparatus is connected with a heavy-gasoline hydrogenation unit through a heavy-gasoline pipeline; the heavy-gasoline hydrogenation unit is connected with the extraction system through a pipeline; and the lower part of the extraction system is connected with the light-gasoline pipeline on the upper part of the distilling apparatus through a pipeline. Compared with the prior art, the front hydrogenation unit and the catalyst of the heavy-gasoline hydrogenation unit are more pertinent; and the sulfur content of obtained blend gasoline is lower, and the olefin content is lower.

Description

technical field [0001] The invention relates to a system and method for preparing high-quality gasoline by catalyzing hydrocarbon recombination. Background technique [0002] Catalytic cracking, catalytic cracking and heavy oil catalytic cracking technologies are the core technologies of oil refining. Catalytic cracking is divided into wax oil catalytic cracking and heavy oil catalytic cracking; the oil produced from these processes is collectively called catalytic hydrocarbons, and the obtained catalytic hydrocarbons are generally The fractionation tower can fractionate dry steam, liquefied gas, gasoline, diesel, heavy oil and other products, among which gasoline and diesel account for more than 70% of the total supply of gasoline and diesel in the market. [0003] Along with more and more stringent environmental protection requirements, the standard of gasoline, diesel oil improves constantly, and the processing method of existing catalytic hydrocarbon through fractionati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G7/02C10G21/00C10G45/00
Inventor 丁冉峰
Owner 丁冉峰