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

A high-quality, catalytic hydrocarbon technology, which is applied in the direction of gasoline stabilization, refined hydrocarbon oil, and aromatics hydrogenation, can solve the problems of high operating costs, low octane number, and high olefin content, and achieve low cost and high sulfur content. The effect of low, low olefin content

Active Publication Date: 2009-05-13
丁冉峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

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Embodiment 1

[0036] As shown in FIG. 1 , it is a schematic flow chart of an 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% (v), the aromatic content is 19% (v), octane The alkane number (RON) is 91 and the density is 728 kg / m 3The stable gasoline (catalytic gasoline) is cut and fractionated in distillation tower 1 with a flow rate of 100,000 tons / year. The tower top temperature of distillation tower 1 is 67 ° C, the tower bottom temperature is 186 ° C, and the tower top pressure is 0.2 MPa (absolute ), the tower bottom pressure is 0.25MPa (absolute), fractionation obtains light gasoline, medium gasoline and heavy gasoline respectively, and described light gasoline (distillation range is 30-65 ℃) is steamed by distillation tower 1 top, and its steaming amount is 30,000 tons / year, produced after hydrogenation by the hydrogenation unit 3-3, the catal...

Embodiment 2

[0057] As shown in FIG. 2 , it is a schematic flowchart of an embodiment of the present invention. The distillation range is 30-205°C, the sulfur content is 600ppm, the mercaptan content is 20ppm, the olefin content is 30% (v), the diene content is 0.5% (v), the aromatic content is 13% (v), octane The alkane number (RON) is 87 and the density is 722 kg / m 3 The stable gasoline is cut and fractionated in distillation tower 1 with a flow rate of 100,000 tons / year. The temperature at the top of distillation tower 1 is 67°C, the temperature at the bottom of the tower is 186°C, and the pressure at the top of the tower is 0.2MPa (absolutely). The pressure is 0.25MPa (absolute), and fractional distillation obtains light gasoline, medium gasoline and heavy gasoline respectively, and described light gasoline (distillation range is 30-65 ℃) is steamed through the upper part of distillation tower 1, and its steaming amount is 30,000 tons / In 2009, it was produced after hydrogenation by t...

Embodiment 3

[0062] As shown in FIG. 3 , it is a schematic flowchart of an embodiment of the present invention. The distillation range is 30-205°C, the sulfur content is 100ppm, the mercaptan content is 10ppm, the olefin content is 20% (v), the diene content is 0.8% (v), the aromatic content is 10% (v), octane The alkane number (RON) is 84 and the density is 726 kg / m 3The stable gasoline is cut and fractionated in distillation tower 1 with a flow rate of 100,000 tons / year. The temperature at the top of distillation tower 1 is 68°C, the temperature at the bottom of the tower is 188°C, and the pressure at the top of the tower is 0.11MPa (absolutely). The pressure is 0.12 MPa (absolute), fractional distillation obtains light gasoline, medium gasoline and heavy gasoline respectively, and described light gasoline (distillation range is 30-65 ℃) is distilled through the upper part of distillation tower 1, and its total distilled volume is 25,000 tons / year, wherein 50% of the distilled volume is...

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Abstract

The invention discloses a system and a method for preparing high-quality gasoline by recombination of catalyzed hydrocarbon. The system comprises a distillation apparatus and an extraction systems, and is characterized in that the upper part of the distillation apparatus is connected with a light gasoline hydrogenation device; the lower part of the distillation apparatus is provided with a heavy gasoline pipeline; the middle part of the distillation apparatus is provided with a medium gasoline pipeline; the medium gasoline pipeline and the heavy gasoline pipeline are connected with the extraction system respectively; and the medium gasoline is respectively provided with hydrogenation devices after extraction. Compared with the prior art, catalysts and parameters in the hydrogenation devices of the system for preparing the high-quality gasoline by recombination of catalyzed hydrocarbon are more pertinent, and the effect of reducing sulfur and olefin is obvious.

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 fractionatio...

Claims

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Application Information

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IPC IPC(8): C10G7/02C10G21/00C10G45/44
Inventor 丁冉峰
Owner 丁冉峰
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