Preparation method of a deep hydrodesulfurization catalyst and application of the catalyst

A desulfurization catalyst, deep hydrogenation technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as low olefin saturation rate, achieve large pore volume and specific surface area, metal content The effect of low and high water absorption

Active Publication Date: 2020-06-19
洛阳金达石化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this catalyst to treat catalytic cracking gasoline raw materials, the olefin saturation rate is low

Method used

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  • Preparation method of a deep hydrodesulfurization catalyst and application of the catalyst
  • Preparation method of a deep hydrodesulfurization catalyst and application of the catalyst

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Effect test

preparation example Construction

[0035] One, the preparation steps of catalyst carrier are:

[0036] 1. Raw materials are pre-mixed, and pseudo-boehmite, solid aluminum sol, and activated α-alumina powder are mixed according to the net weight ratio of 70-90:30-5:0-10, and 1-20% of the weight of the bond is added Put the agent and 1%~30% pore expander into the mixer, dry mix for 10~60 minutes, take out the powder and pass it through the 20~60 mesh screen to remove the coarse particles;

[0037] 2. Preparation of mud-making solution: based on the total weight of the powder in step 1, weigh 0.5-10% of phosphoric acid and acetic acid by weight and dissolve them in deionized water with 60-150% of the total weight of the powder;

[0038] 3. Put the powder into the mud-making machine, add the mud-making solution obtained in step 2, and seal the mixture for 5-30 minutes to make the powder into mud;

[0039] 4. Send the mud material obtained in step 3 into the mud refining machine, and train the mud material into a d...

Embodiment 1

[0049] a. Put 5.9kg of pseudo-boehmite, 3.6kg of solid alumina sol, 0.5kg of activated α-alumina powder, 0.2kg of safflower gum, and 2kg of starch into the conical mixer, take it out and put it into the conical mixer after 15 minutes of mixing inside the clay machine;

[0050] b. Then dissolve 0.5kg of citric acid monohydrate, 0.32kg of phosphoric acid, and 0.2kg of acetic acid in 8.8kg of deionized water, and finally add the aqueous solution into the mud making machine by spraying, and make mud for 8 minutes. After the mud becomes a block take out;

[0051] c. Load metal on the catalyst carrier obtained in step b: Dissolve 40 grams of metal salts ammonium metatungstate, ammonium heptamolybdate, cobalt nitrate hexahydrate, nickel nitrate hexahydrate and phosphoric acid in 105 grams of water, without precipitation and with After a long period of stability, the catalyst carrier is fully impregnated in the metal solution and then dried and roasted. The conditions for drying and ...

Embodiment 2

[0055] a. Put 6.7kg of pseudo-boehmite, 2.8kg of solid aluminum sol, 0.5kg of activated α-alumina powder, 0.2kg of safflower gum, and 2kg of starch into the conical mixer, take it out and put it into the mixer after 15 minutes of mixing inside the clay machine;

[0056] b. Then dissolve 0.5kg of citric acid monohydrate, 0.5kg of phosphoric acid, and 0.35kg of acetic acid in 8.8kg of deionized water, and finally add the aqueous solution into the mud making machine in the form of spraying, and make mud for 8 minutes. After the mud becomes a block take out;

[0057] c. Load metal on the carrier obtained in step b: Dissolve 40 grams of metal salt and phosphoric acid in 105 grams of water. After no precipitation and long-term stability, the carrier is fully immersed in the metal solution and then dried and The conditions of roasting, drying and roasting are as follows: drying in an oven at 55°C for 13 hours, and roasting in an oxidizing atmosphere at a temperature of 750°C for 7 h...

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Abstract

The invention discloses a preparation method of a catalyst for deep hydrodesulfurization. The preparation method comprises the steps of: mixing pseudo-boehmite, solid aluminum sol, active alpha-alumina powder, binder and a pore-expanding agent evenly in a mixer, then adding a mixed aqueous solution of phosphoric acid and acetic acid, kneading the powder material into a mud shape, and then performing kneading, extrusion molding, drying, breaking and calcining to obtain a catalyst carrier; and loading metal W, Mo, Co, Ni and P by using an impregnation method, and performing drying and calciningto obtain the catalyst for deep hydrodesulfurization. The prepared catalyst has the characteristics of high water absorption, a large pore volume and large specific surface area, high metal dispersity, more active central sites at edges, good activities in hydrodenitrogenation, aromatic saturation and ultra-deep hydrodesulfurization, high mechanical strength and low metal content.

Description

technical field [0001] The invention belongs to the technical field of hydrodesulfurization, and in particular relates to a preparation method of a deep hydrodesulfurization catalyst and an application of the catalyst. Background technique [0002] The heavy and inferior quality of crude oil has led to the further expansion of the trend of high sulfur in crude oil. According to reports, currently the world's low-sulfur crude oil accounts for only 17wt%, and high-sulfur crude oil with sulfur content > 2wt% is as high as 58wt%. The SOx, NOx, CH and soot emitted during the combustion process of sulfur, nitrogen and aromatics in diesel will lead to the formation of acid rain, photochemical smog, carcinogens, etc., causing serious pollution to the environment and serious harm to the health of residents. Based on this, governments of various countries are paying more and more attention to air cleanliness, and the requirements for vehicle diesel specifications are becoming more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J35/10B01J37/02C10G45/08
CPCB01J27/19B01J35/1019B01J35/1038B01J35/1042B01J35/1061B01J35/1076B01J35/109B01J37/0201C10G2300/202C10G2300/70
Inventor 赵华韩明徐翠翠牛同治王进才姚光纯
Owner 洛阳金达石化有限责任公司
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