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Device and method for producing ultra-low sulphur gasoline by inferior catalytic gasoline hydrogenation upgrading

A catalytic gasoline and hydrogenation upgrading technology, which is applied in the fields of hydrotreating process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problems of waste of resources and large loss of octane number, and achieve energy saving and small loss of octane number , the effect of good combustion performance

Inactive Publication Date: 2017-08-04
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The ultra-low sulfur gasoline produced by the existing technology still has a large octane loss, and the liquid yield of the product is only 98%wt, resulting in a waste of resources

Method used

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  • Device and method for producing ultra-low sulphur gasoline by inferior catalytic gasoline hydrogenation upgrading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] This embodiment provides a device for producing ultra-low-sulfur gasoline by hydrogenation and upgrading of inferior catalytic gasoline. Stripping tower 4, octane recovery reactor 5, heat separation tank 6, stabilizing tower 7, and stripping tower overhead air cooler 8, reflux tank 9, reaction product air cooler 10, cold separation tank 11 and the circulation connected in sequence Hydrogen desulfurizer 12 and circulating hydrogen compressor 13.

[0070] Hydrogen sulfide stripper 4 top outlets, stripper top air cooler 8, the inlet of reflux tank 9 are connected in sequence, and the outlet of reflux tank 9 is connected with hydrogen sulfide stripper 4 top inlets; The top outlet of heat separation tank 6, The inlets of the reaction product air cooler 10 and the cold separation tank 11 are connected in sequence, and the outlet of the cold separation tank 11 is connected with the connecting pipeline between the hot separation tank 6 and the stabilizing tower 7 .

[0071] Th...

Embodiment 2

[0073] In this example, the device for producing ultra-low-sulfur gasoline by hydro-upgrading of inferior catalytic gasoline provided in Example 1 is used, and the inferior-quality catalytic gasoline is subjected to hydro-upgrading treatment to produce ultra-low-sulfur gasoline.

[0074] Introduce inferior catalytic gasoline and fresh hydrogen into the pre-hydrogenation reactor 1, under hydrogen partial pressure 2.5Mpa, temperature 150°C, volume space velocity 4.0h -1 The hydrogenation reaction is carried out under certain conditions, wherein the volume ratio of fresh hydrogen to inferior catalytic gasoline is 5:1, and the pre-hydrogenation catalyst includes the following components in mass percentage: Ni and Cu oxides 20%, and the balance is alumina carrier. The specific surface area of ​​the prehydrogenation catalyst is 260m 2 / g, the pore volume is 0.45ml / g. The product obtained by the above hydrogenation reaction enters the fractionation tower 2 for fractionation to obta...

Embodiment 3

[0078] In this example, the device for producing ultra-low-sulfur gasoline by hydro-upgrading of inferior catalytic gasoline provided in Example 1 is used, and the inferior-quality catalytic gasoline is subjected to hydro-upgrading treatment to produce ultra-low-sulfur gasoline.

[0079] Introduce inferior catalytic gasoline and fresh hydrogen into the pre-hydrogenation reactor 1, under hydrogen partial pressure 2.0Mpa, temperature 100°C, volume space velocity 2.5h -1 The hydrogenation reaction is carried out under certain conditions, wherein the volume ratio of fresh hydrogen to inferior catalytic gasoline is 4:1, and the pre-hydrogenation catalyst includes the following components in mass percentage: 12% oxides of Zn and Ge, and the balance is alumina carrier. The specific surface area of ​​the prehydrogenation catalyst is 220m 2 / g, the pore volume is 0.25ml / g. The product obtained by the above hydrogenation reaction enters the fractionation tower 2 for fractionation to o...

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Abstract

The invention discloses a device and a method for producing ultra-low sulphur gasoline by inferior catalytic gasoline hydrogenation upgrading, and belongs to the field of treatment of catalytic gasoline hydrogenation upgrading. The device comprises a pre-hydrogenation reactor, a fractionating tower, a hydrogenation desulphurization reactor, a hydrogen sulfide stripping tower, an octane number recovery reactor, a heat separation tank, a stabilization tower, a stripping tower top air cooler, a backflow tank, a reaction product air cooler and a cold separation tank which are in sequential connection, wherein a top outlet of the hydrogen sulfide stripping tower, the stripping tower top air cooler and an inlet of the backflow tank are sequentially connected; an outlet of the backflow tank is connected with the top inlet of the hydrogen sulfide stripping tower; a top outlet of the heat separation tank, the reaction product air cooler and an inlet of the cold separation tank are sequentially connected; the cold separation tank outlet is connected with a connecting pipeline between the heat separation tank and the stabilization tower. The device provided by the invention has the advantages that the sulphur in the inferior catalytic gasoline is removed through the hydrogenation desulphurization reactor and the octane number recovery reactor; the sulphur content of the obtained ultra-low sulphur gasoline is less than or equal to 10 mu g.g<-1>; the octane number loss is low; the liquid yield is high.

Description

technical field [0001] The invention relates to the field of catalytic gasoline hydrogenation treatment, in particular to a device and method for producing ultra-low sulfur gasoline by hydrogenation and upgrading of inferior catalytic gasoline. Background technique [0002] Automobile exhaust contains harmful substances such as solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead and sulfur oxides, and is one of the main sources of air pollution. In order to improve the air quality, my country requires gasoline for automobiles to use sulfur content less than or equal to 10μg·g -1 ultra-low sulfur gasoline. Low-quality catalytic gasoline with high sulfur and high olefins is a commonly used chemical product. At present, ultra-low sulfur gasoline is often produced by hydrodesulfurization of inferior catalytic gasoline. [0003] The prior art provides a method for producing ultra-low-sulfur gasoline through hydrodesulfurization of inf...

Claims

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Application Information

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IPC IPC(8): C10G65/02
CPCC10G65/02C10G2300/202
Inventor 刘传强夏少青王国旗胡耀强刘晓步相春娥刘瑞萍孙嫚王佩瑜
Owner BC P INC CHINA NAT PETROLEUM CORP
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