Mercaptan etherification catalyst

A catalyst and etherification technology, applied in physical/chemical process catalysts, catalyst activation/preparation, sulfide preparation, etc., can solve problems such as a large number of alkali residues, environmental pollution, etc., and achieve high desulfurization efficiency, low price, and good selection. Effects of Sexual Hydrogenation

Active Publication Date: 2011-07-20
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two processes still use the traditional lye desulfurization unit, and a large amount of alkali slag will be produced in the LCN alkali extraction desulfurization unit, causing serious environmental pollution

Method used

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  • Mercaptan etherification catalyst
  • Mercaptan etherification catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This example prepares a kind of Ni / Al by impregnation loading method 2 o 3 catalyst. Weigh 100g pseudo-boehmite powder (Al 2 o 3 Dry basis content is 70wt%), adding accounted for Al 2 o 3 Dry base 5wt% Tianjing powder additive 3.5g, mass concentration 5wt% nitric acid aqueous solution 80g, mix and roll and mix into plastic powder, prepare the cylindrical strip that diameter is 1.5mm with extrusion machine, dry at 100 ℃ 8h, calcination at 500°C for 2h, Al 2 o 3 carrier. Loading of active components: Take 13.68g of nickel nitrate according to the amount of NiO content on the final catalyst accounting for 15wt% of the carrier, add 14.87g of deionized water to make a solution, then impregnate 20g of the above carrier for 8h, dry at 100°C for 10h, 500°C Lower roasting for 2h to prepare NiO / Al 2 o 3 catalyst.

[0031] Put the catalyst above into a fixed-bed reactor, and reduce it at 450°C for 4 hours at a pressure of 0.2MPa and a hydrogen-oil volume ratio of 300:1;...

Embodiment 2

[0033] This example adopts example 1 method to make Al 2 o 3 Carrier, the loading of active components accounts for 10wt% of the total weight of the catalyst according to the NiO content on the final catalyst, MoO 3 The content accounts for 3wt% of the total weight of the catalyst. Quantitatively weigh 8.92g of nickel nitrate and 0.85g of ammonium molybdate, add 16.69g of water to prepare a solution, then impregnate with 20g of the above carrier for 8h, dry at 100°C for 10h, and roast at 500°C 2h, prepared NiO-MoO 3 / Al 2 o 3 catalyst.

[0034] Ni-Mo-S / Al is prepared by reduction and vulcanization method in Example 1 2 o 3 Catalyst, abbreviated as TE-2 catalyst.

Embodiment 3

[0036] To the Al prepared in example 1 2 o 3 The carrier is modified by using MgO in a loading mode, and the magnesium nitrate of 0.93g is weighed according to the amount that the MgO content accounts for 1wt% of the carrier weight, and 19.8g of deionized water is added to form a solution, and then mixed with 20g of Al 2 o 3 The carrier was impregnated for 8 hours, dried at 100°C for 10 hours, and calcined at 500°C for 2 hours to prepare MgO-Al 2 o 3 Composite modified carrier.

[0037] Using the same raw materials and methods as impregnated, reduced and vulcanized in Example 1 and Example 2, Ni-S / MgO-Al was prepared 2 o 3 and Ni-Mo-S / MgO-Al 2 o 3 Catalysts are abbreviated as TE-3 and TE-4 catalysts.

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Abstract

The invention discloses a mercaptan etherification catalyst. The catalyst is characterized in that: a metal oxide is added into an alumina carrier for modifying, wherein the metal oxide is an oxide of one metal or mixture of a plurality of metal oxides in Be, Mg, Ca, Sr, Ba, La and Ce; the metal oxide is 0.1 to 20 weight percent of the carrier; an active ingredient is loaded on the carrier, the active ingredient is one or two of Fe and Ni, the oxide content of the active ingredient is 5 to 40 weight percent of the total weight of the catalyst, or the active ingredient consists of Mo and one or two of Fe and Ni, the oxide content of one metal of Fe and Ni or the oxide content of two metals of Fe and Ni is 5 to 40 weight percent of the total weight of the catalyst, and the oxide content of Mo is 1 to 10 weight percent of the total weight of the catalyst; and the catalyst is reduced and vulcanized before use. The catalyst is used for removing mercaptan and dialkene in full-fraction catalytically cracked gasoline, the mercaptan removal efficiency is high, and no alkali slag is discharged.

Description

technical field [0001] The invention relates to a catalyst for etherification of mercaptans, in particular to a catalyst for reacting mercaptans in light fractions such as catalytic cracking gasoline, catalytic cracking gasoline and coker gasoline with diolefins to generate sulfide compounds. Background technique [0002] With the background of increasingly stringent environmental requirements, the sulfur content in oil products is also required to be higher and higher. The total sulfur content of gasoline in developed countries in Europe and the United States has been required to be within 10 μg·g -1 The following high standard requirements, domestic gasoline has also been fully upgraded to National III standard gasoline, while Beijing and Shanghai have implemented a total sulfur content of no more than 50μg·g -1 National IV standard gasoline. [0003] Catalytic cracking (FCC) gasoline is currently the main source of gasoline. The output of FCC gasoline in my country accou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/883B01J23/78B01J23/887B01J23/83B01J37/18B01J37/20C07C321/18C07C319/18
Inventor 柯明申志兵蒋庆哲宋昭峥张雅洁刘基扬于沛
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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