Process of selectively hydrogenating and desulfurizing inferior gasoline

A technology for hydrodesulfurization and inferior gasoline, applied in refining to remove heteroatoms, etc., can solve problems such as complex process flow, and achieve the effects of utilizing system heat, avoiding excessive hydrogenation, and reducing octane number loss

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the method process is complex

Method used

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  • Process of selectively hydrogenating and desulfurizing inferior gasoline

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] Preparation of a highly active WO by co-impregnation 3 (10.0wt%)-NiO(2.0wt%)-P 2 o 5 (1.5wt%) / Al 2 o 3 catalyst.

[0038] Take by weighing 1000g pseudo-thin water aluminum hydroxide powder (Al 2 o 3 Dry basis content is 78wt%), adding accounted for Al 2 o 3 Dry basis 5wt% squash powder extrusion aid, mass concentration 10% nitric acid aqueous solution 200ml, mix and roll and mix into plastic powder, use extruder to prepare cylindrical strips with a diameter of 1.5mm, dry at 120°C 8 hours, calcination at 500°C for 5 hours to prepare a catalyst carrier;

[0039] Press Catalyst on WO 3 content of 10.0wt%, NiO content of 2.0wt% and P 2 o 5 The content is 1.5wt%. Take quantitative ammonium metatungstate, nickel nitrate and phosphoric acid, add deionized water to make 100ml impregnation solution, and then spray it on 160g of the above-mentioned catalyst carrier. Drying at 120°C for 6 hours and calcining at 480°C for 6 hours prepared WO 3 (10.0wt%)-NiO(2.0wt%)-P ...

example 2

[0041] Preparation of a low activity MoO by co-impregnation 3 (3.0wt%)-CoO(1.0wt%)-K 2 O(2.0wt%) / Al 2 o 3 catalyst.

[0042] The catalyst carrier was prepared with reference to Example 1.

[0043] MoO on Catalyst 3 content of 3.0wt%, CoO content of 1.0wt% and K 2 O content is 2.0wt%, take quantitative ammonium molybdate, cobalt nitrate and potassium nitrate, add deionized water, be made into 110ml impregnation liquid, then, spray on the above-mentioned catalyst carrier of 165g. Drying at 120°C for 8 hours and calcining at 500°C for 4 hours prepared MoO 3 (3.0wt%)-CoO(1.0wt%)-K 2 O(2.0wt%) / Al 2 o 3 catalyst. The catalyst is referred to as LAC-1 for short, and the specific surface area and pore volume properties of the catalyst are shown in Table 1 by low-temperature nitrogen adsorption BET method.

example 3

[0045] Preparation of a highly active MoO by a stepwise impregnation method 3 (13.0wt%)-CoO(4.0wt%)-P 2 o 5 (1.5wt%)-K 2 O-(2.0wt%) / Al 2 o 3 catalyst.

[0046] The catalyst carrier was prepared with reference to Example 1.

[0047] Press Catalyst on P 2 o 5 The content is 1.5wt%, K 2 O content is 2.0wt%, take quantitative phosphoric acid, potassium nitrate, add deionized water, be made into 120ml impregnating solution, then, spray on the above-mentioned catalyst carrier of 160g. P 2 o 5 (1.5wt%)-K 2 O-(2.0wt%) / Al 2 o 3 Catalyst intermediate.

[0048] MoO on Catalyst 3 The content is 13.0wt%, and the CoO content is 4.0wt%. Take quantitative molybdenum oxide and basic cobalt carbonate, add deionized water to make 60ml impregnation solution, and then spray it on 80g of the above-mentioned catalyst intermediate. Highly active MoO was prepared by drying at 120°C for 8 hours and calcining at 490°C for 6 hours 3 (13.0wt%)-CoO(4.0wt%)-P 2 o 5 (1.5wt%)-K 2 O-(2.0wt%...

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Abstract

The process of selectively hydrogenating and desulfurizing inferior gasoline includes selectively hydrogenating and desulfurizing inferior gasoline, separating oil from gas, eliminating mercaptan and other steps. In the step of selectively hydrogenating and desulfurizing inferior gasoline, one kind of high activity hydrogenating and desulfurizing catalyst in the upstream and one kind of low activity hydrogenating and desulfurizing catalyst in the downstream are applied. The hydrogenating and desulfurizing has the great amount of heat produced in the hydrogenating and desulfurizing reaction well utilized, so that the present invention has lowered hydrogen consumption, high heat efficiency, prevention of over hydrogenation, inhibition of saturating hydrogenation of olefin and lowered octane value loss.

Description

technical field [0001] The invention relates to a method for producing clean gasoline, in particular to a process for high-selective hydrodesulfurization of inferior gasoline. Background technique [0002] Reducing the sulfur content of gasoline can greatly reduce the emission of harmful substances in automobile exhaust. Therefore, the new standards of clean gasoline in various countries in the world have put forward stricter and stricter restrictions on sulfur content. The European Class IV vehicle exhaust emission standard (EU2005 standard) stipulates that the sulfur content of gasoline after 2005 is ≯50μg / g, and the olefin content is ≯18v%. , the olefin content≯14v%; the European Union plans to implement the new standard of "sulfur-free gasoline (ULSG)" with a sulfur content of less than 10μg / g in 2009. The State Environmental Protection Administration of China stipulates that on July 1, 2005, the national gasoline will implement the Euro II emission standard (sulfur con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/02
Inventor 赵乐平庞宏方向晨王继锋关明华尤百玲段为宇李扬
Owner CHINA PETROLEUM & CHEM CORP
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