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System and method for preparing high quality petrol

A high-quality, gasoline-based technology, applied in the petroleum industry, hydrocarbon distillation, etc., to achieve the effects of low cost, increased oil extraction, and small scale

Inactive Publication Date: 2013-04-10
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
[0008]Eluting sulfur with alkali cannot remove olefins, and it will also cause environmental pollution; through hydrogenation of light gasoline, not only energy consumption is high, but the cost is also high

Method used

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  • System and method for preparing high quality petrol
  • System and method for preparing high quality petrol
  • System and method for preparing high quality petrol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 Shown is a schematic flow chart of Embodiment 1 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 (catalytic gasoline) is cut and fractionated in the distillation tower 1 with a flow rate of 60,000 tons / year. The tower top temperature of the distillation tower 1 is 82 ° C, the tower bottom temperature is 190 ° 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. / year, then enter the light gasoline extraction system 2-1 for extraction and separation, and separate the extracted oil and raffinate; the solvent used in the described extraction system 2-1 is sulfolane, and the ex...

Embodiment 2

[0054] like figure 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 800ppm, the mercaptan content is 9ppm, the olefin content is 36% (v), the diene content is 0.9% (v), the aromatic content is 17% (v), octane The alkane number (RON) is 91 and the density is 731 kg / m 3 The stable gasoline (catalytic gasoline) is cut and fractionated in the distillation tower 1 with a flow rate of 60,000 tons / year; meanwhile, the distillation range is 30-205°C, the sulfur content is 200ppm, the mercaptan content is 1ppm, and the olefin content is less than 0.1% (v) (trace, undetectable), diene content less than 0.01% (v) (trace, undetectable), aromatics content 8% (v), octane number (RON) 82, Density is 732 kg / m 3 The naphtha is cut and fractionated in the distillation tower 1 with a flow rate of 20,000 tons / year; at the same time, the distillation range is 30-205°C, the sulfur content is 150ppm, the mercapt...

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Abstract

The invention discloses a device and a method for preparing high quality petrol. The system comprises a distillation device and is characterized in that the upper part of the distillation device is connected with a light petrol extraction system by a pipeline, the upper part of the light petrol extraction system directly extracts the product by a pipeline; the lower part of the light petrol extraction system is connected with a hydrogenation unit by a pipeline; the lower part of the distillation device is connected with the hydrogenation unit by a pipeline; the hydrogenation unit is connected with a heavy petrol extraction system by a pipeline; the upper part of the heavy petrol extraction directly extracts the product, and the lower part of the heavy petrol extraction system is connected with a pipeline at the upper part of the light petrol extraction system by a pipeline. The device and the method can perform deolefination and remove mercaptans and diene and has small scale and low cost.

Description

technical field [0001] The invention relates to a device and a method for preparing high-quality gasoline. [0002] Background technique [0003] 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. [0004] 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 fractionation column fractionation shows ...

Claims

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Application Information

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