Selective hydrogenation desulfurization method for bastard gasoline

A technology for hydrodesulfurization and low-quality gasoline, which is applied in refining to remove heteroatoms, etc. It can solve the problems of high equipment investment and operating costs, complex process flow, etc., to improve the selectivity of hydrodesulfurization, simplify the operation process, eliminate strong inhibitory effect

Active Publication Date: 2008-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the process of this method is complicated, and special high-pressure hydrogen sulfide removal equipment is required, and the equipment capital and operating costs are relatively high.

Method used

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  • Selective hydrogenation desulfurization method for bastard 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 invention discloses a selective hydrodesulfurization method for poor quality gasoline, which is characterized in that, the method comprises the hydrodesulfurization treatment of poor quality gasoline material and the separation of the hydrodesulfurization product, wherein the hydrodesulfurization process of the poor quality gasoline material is as followings: the poor quality gasoline material, a hydrogen sulfide removing agent and hydrogen are contacted to a selective hydrodesulfurization catalyst, and selective hydrodesulfurization reaction is carried out under hydrodesulfurization reaction conditions. Compared with the method not using hydrogen sulfide removing agent, the invention has the advantages that, H2S is removed in the hydrodesulfurization reaction process, so not only the strong inhibition effect of the H2S to thiophene-type sulfide HDS is eliminated, the mercaptan generated by the rearrangement reaction between the H2S and olefin is also avoided; therefore, not only the hydrodesulfurization selectivity is increased, the subsequent deodorization facility can also be cancelled, and the operation flow is simplified; the method can produce clean gasoline having the sulfur content is not more than 50Mu g / g and the mercaptan sulfur content is not more than 10Mu g / g under the condition of low loss of octane number.

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): C10G45/06
Inventor 赵乐平尤百玲方向晨王继锋关明华庞宏段为宇李扬
Owner CHINA PETROLEUM & CHEM CORP
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