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

A technology of heavy gasoline and catalytic hydrocarbons, which is applied in the direction of gasoline stabilization, refining hydrocarbon oil, and aromatics hydrorefining, etc., which can solve the problems of high operating costs, high olefin content, and low octane number, and achieve low cost and low olefin content. Low, low sulfur effect

Active Publication Date: 2009-05-13
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
  • System and method for catalyzing hydrocarbon for recombinant production of high-quality gasoline

Examples

Experimental program
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Effect test

Embodiment 1

[0034] As shown in Figure 1, the distillation range is 30-205°C, the sulfur content is 300ppm, the mercaptan content is 8.0ppm, the olefin content is 40% (v), the diene content is 1% (v), and the aromatic hydrocarbon content is 19%(v), octane number (RON) 91, density 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 temperature at the top of distillation tower 1 is 67°C, the temperature at the bottom of the tower is 186°C, and the distillation range of light-medium gasoline is 65°C. -90°C; the distillation range of medium gasoline is 90-160°C. Tower top pressure is 0.2MPa (absolute), tower bottom pressure is 0.25MPa (absolute), fractionation obtains light gasoline, light-medium gasoline, medium gasoline and heavy gasoline respectively, and described light gasoline (distillation range is 30-65 ℃) Steam through the upper part of the distillation tower 1, and its steaming capacity is 20,0...

Embodiment 2

[0052] As shown in Figure 2, the distillation range is 30-205°C, the sulfur content is 300ppm, the mercaptan content is 8.0ppm, the olefin content is 40% (v), the diene content is 1% (v), and the aromatic hydrocarbon content is 19%(v), octane number (RON) 91, density 728 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 distillation range of light-medium gasoline is 65-90°C; The distillation range of medium gasoline is 90-160°C. Tower top pressure is 0.2MPa (absolute), tower bottom pressure is 0.25MPa (absolute), fractionation obtains light gasoline, light-medium gasoline, medium gasoline and heavy gasoline respectively, and described light gasoline (distillation range is 30-65 ℃) Steam through the upper part of the distillation tower 1, and its steaming capacity is 20,000 tons / year; the middle...

Embodiment 3

[0057] As shown in Figure 3, the distillation range is 30-205 ° C, the sulfur content is 100 ppm, the mercaptan content is 5.0 ppm, the olefin content is 30% (v), the diene content is 0.1% (v), and the aromatic content is 15%(v), octane number (RON) 89, density 728 kg / m 3The stable gasoline (catalytic gasoline) is cut and fractionated in the distillation tower 1 with a flow rate of 100,000 tons / year. The temperature at the top of the distillation tower 1 is 68°C, the temperature at the bottom of the tower is 188°C, and the distillation range of light-medium gasoline is 65°C. -90°C; the distillation range of medium gasoline is 90-160°C. Tower top pressure is 0.2MPa (absolute), tower bottom pressure is 0.25MPa (absolute), fractionation obtains light gasoline, light-medium gasoline, medium gasoline and heavy gasoline respectively, and described light gasoline (distillation range is 30-65 ℃) Steam through the upper part of the distillation tower 1, and its steaming capacity is 18...

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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 is characterized in that a hydrogenation device is connected with a distillation apparatus; the upper part and the lower part of the distillation apparatus are provided with a light gasoline pipeline and a heavy gasoline pipeline respectively; 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 an extraction device respectively; the upper part of the extraction device is connected with a water scrubbing system through a pipeline; the lower part of the extraction device is connected with the light gasoline pipeline on the upper part of a catalytic unit through a pipeline; and the medium gasoline is respectively provided with hydrogenation devices after extraction. Compared with the prior art, catalysts and parameters in a raffinate oil hydrogenation device and an aromatic hydrocarbon hydrogenation are more pertinent, and the effect of reducing sulfur and olefin is obvious.

Description

technical field [0001] The invention relates to a catalytic hydrocarbon recombination treatment system and a method thereof, in particular to a system and a method for preparing high-quality gasoline by catalytic 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 improv...

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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