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

A high-quality, hydrocarbon-catalyzed technology, used in gasoline stabilization, refined hydrocarbon oil, petroleum industry, etc., can solve the problems of low octane number, high olefin content, large investment, etc., and achieve low sulfur content and low olefin content. Effect

Inactive 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

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Experimental program
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Embodiment 1

[0035] As shown in FIG. 1-1, it is a schematic flowchart of this embodiment. 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) (RON) is 89, and the density is 728 kg / m 3 The stable gasoline (catalytic gasoline) is cut and fractionated in the distillation tower 1 with a flow rate of 100,000 tons / year. The tower top temperature of the distillation tower 1 is 82 ° C, the tower bottom temperature is 186 ° C, and the tower top pressure is 0.2 MPa (absolute ), the pressure at the bottom of the tower is 0.25MPa (absolutely), and light gasoline and heavy gasoline are obtained respectively. tons / year, and then enter the hydrogenation unit 3-1 for hydroprocessing; the catalyst of the hydrogenation unit 3-1 is a selective hydrogenation catalyst GHT-20; the volume space velocity ratio of the hydrogenation unit 3-1 is ...

Embodiment 2

[0054] As shown in Fig. 1-2, it is a schematic flowchart of this embodiment. 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) (RON) is 91, and the density is 728 kg / m 3 The 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 86 ° C, the tower bottom temperature is 192 ° C, and the tower top pressure is 0.2 MPa (absolute ), the pressure at the bottom of the tower is 0.25MPa (absolute), and the fractional distillation obtains light gasoline and heavy gasoline respectively. 10,000 tons / year, and then enter the hydrogenation unit 3-1 for hydroprocessing; the catalyst of the hydrogenation unit 3-1 is a selective hydrogenation catalyst GHT-20; the volume space velocity ratio of the hydr...

Embodiment 3

[0058] As shown in FIG. 2 , it is a schematic flow chart of this embodiment. The distillation range is 30-205°C, the sulfur content is 80ppm, the mercaptan content is 3ppm, the olefin content is 25% (v), the diene content is 0.05% (v), the aromatic content is 15% (v), octane The alkane number (RON) (RON) is 88, and the density is 728 kg / m 3 The stable gasoline (catalytic gasoline) is cut and fractionated in the distillation tower 1 with a flow rate of 100,000 tons / year. The tower top temperature of the distillation tower 1 is 82 ° 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 and heavy gasoline respectively, and described light gasoline (distillation range is 30-80 ℃) is steamed by distillation tower 1 top, and its total steaming amount is 4 10,000 tons / year; the heavy gasoline (distillation range is 80-205°C) enters the hydrogenation unit 3 f...

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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 catalytic distillation apparatus, and is characterized in that the upper part of the catalytic distillation apparatus is provided with a light-gasoline pipeline, and the lower part of the catalytic distillation apparatus is connected with a hydrogenation unit through a heavy-gasoline pipeline; heavy gasoline after hydrogenation is connected with an extraction device through a pipeline; and the upper part of the extraction device is connected with a water scrubbing system through a pipeline, and the lower part of the extraction device is connected with the light-gasoline pipeline on the upper part of the catalytic distillation apparatus through a pipeline. Compared with the prior art, the system and method have the advantages that the amount of catalyst used is greatly reduced; and special catalyst and parameters are adopted aiming at light gasoline, so that the sulfur reduction effect and the olefin reduction effect are 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): C10G7/02C10G21/00C10G45/00
Inventor 丁冉峰
Owner 丁冉峰
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