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High-activity heavy distillate oil hydrotreatment catalyst preparation method

A heavy distillate oil, hydrotreating technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of lack of support structure for active components, low catalyst strength, and low metal loss rate and other problems, to achieve the effect of catalyst activity improvement, good hydrogenation activity, and large metal loading

Active Publication Date: 2016-12-07
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bulk hydrogenation catalyst is prepared by this method, the preparation method is simple, the metal loss rate is low, and the catalyst activity is high, but because the active component lacks an effective support structure, the catalyst has the problems of low strength, easy wear, and low service life

Method used

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  • High-activity heavy distillate oil hydrotreatment catalyst preparation method
  • High-activity heavy distillate oil hydrotreatment catalyst preparation method
  • High-activity heavy distillate oil hydrotreatment catalyst preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 40g of nickel acetate and 20g of oxalic acid, add them into deionized water and stir to dissolve, set the volume to 300mL for later use, and record it as A-1; take 84g of molybdenum oxide, add 198g of ammonia water, stir to dissolve, and make the volume to 300mL with deionized water for later use. It is B-1; take 108g of macroporous pseudoboehmite and 13g of nano-titanium dioxide powder, add it to 125mL of silica sol, adjust the speed of the stirring paddle to 300r / min, stir and beat for 30min, and obtain slurry C-1.

[0027] Heat the slurry C-1 to 60°C, keep the temperature constant, add the solution A-1 and the solution B-1 into the slurry C-1 at a constant speed under stirring, and seal the precipitation reaction for 1.5h. After the reaction, filter out the mother liquor. The filter cake was washed with deionized water.

[0028] Put the filter cake after washing and removing the impurity ions into a wheel-type mixer, add 6g of nitric acid, 5g of scallop powder, ...

Embodiment 2

[0030] Take 48g of nickel acetate and 39g of tartaric acid, add them into deionized water and stir to dissolve, set the volume to 300mL for later use, and record it as A-2; take 122g of ammonium paramolybdate and 33g of sodium carbonate, add them into deionized water, stir to dissolve, and set the volume to 300mL For later use, record it as B-2; take 86g of macroporous pseudo-boehmite and 10g of nano-titanium dioxide powder, add it to 100mL of silica sol, adjust the rotation speed of the stirring paddle to 300r / min, stir and beat for 30min, and obtain slurry C-2.

[0031] Heat the slurry C-2 to 60°C, keep the temperature constant, add the solution A-2 and the solution B-2 into the slurry C-2 at a constant speed under stirring, seal the precipitation reaction for 1 hour, filter the mother liquor after the reaction, and use The filter cake was washed with deionized water.

[0032] The filter cake after washing to remove miscellaneous ions was placed in a wheel-type mixer, and 6 g ...

Embodiment 3

[0034] Take 56g of nickel acetate and 45g of malic acid, add them into deionized water and stir to dissolve, set the volume to 300mL for later use, and record it as A-3; take 142g of ammonium paramolybdate and 39g of sodium hydroxide, add them into deionized water, stir to dissolve, and set the volume to To 300mL for later use, record it as B-3; take 65g of macroporous pseudo-boehmite and 8g of nano-titanium dioxide powder, add it to 75mL of silica sol, adjust the speed of the stirring paddle to 300r / min, stir and beat for 30min, and obtain slurry C-3 .

[0035] Heat the slurry C-3 to 60°C, keep the temperature constant, add the solution A-3 and the solution B-3 into the slurry C-3 at a constant speed while stirring, seal the solution for precipitation reaction for 0.5h, filter the mother liquor after the reaction, The filter cake was washed with deionized water.

[0036] The filter cake after washing to remove the impurity ions was placed in a wheel-type mixer, and 6 g of ni...

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Abstract

The invention relates to a high-activity heavy distillate oil hydrotreatment catalyst preparation method which includes the steps: selecting VIII-group metal nickel soluble salt and polyhydroxy acid complexing agents to prepare acid solution; selecting VIB-group metal molybdenum soluble salt and alkaline precipitants to prepare alkaline solution; mixing large pore volume pseudo boehmite, nanometer titania powder and silica sol to form suspension slurry serving as a substrate, merging flow, adding the acid solution and the alkaline solution, performing closed reaction, uniformly dispersing metal components in titanium-silicon-aluminum media, performing filtration and washing to obtain catalyst precursor filter cakes after reaction, and curing, forming, drying and roasting the catalyst precursor filter cakes to obtain finished catalysts. Compared with bulk phase hydrogenation catalysts prepared by an existing method, the catalysts prepared by the method have the advantages of high mechanical strength, low abrasion, large pore volume, high metal dispersity, good hydrogenation activity, long service life and the like, and are particularly suitable for hydrotreatment of inferior heavy distillate oil which is high in sulfur-nitrogen content, large in polycyclic aromatic hydrocarbon proportion and difficult to process.

Description

technical field [0001] The invention belongs to the field of oil refining, and in particular relates to a preparation method of a high-activity heavy distillate oil hydrotreating catalyst. Background technique [0002] With the increasingly stringent environmental protection regulations at home and abroad, oil refineries are facing more stringent challenges for clean fuel production. Diesel-free sulfur has become the development trend of new diesel standards in various countries and regions around the world, and refineries are out of economic benefits and investment costs. Considering that, it is also hoped that the hydrogenation unit can achieve the highest possible raw material processing capacity at a lower operating pressure and reaction temperature, which requires researchers to develop more active hydrogenation catalysts to cope with the ever-increasing environmental protection requirements and market need. At present, the diesel hydrogenation catalysts used in indust...

Claims

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Application Information

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IPC IPC(8): B01J23/883C10G45/08C10G45/50
CPCC10G45/08C10G45/50B01J23/002B01J23/883B01J37/0018B01J37/031B01J2523/00C10G2300/70B01J35/615B01J35/633B01J35/647B01J2523/31B01J2523/41B01J2523/47B01J2523/68B01J2523/847
Inventor 张国辉于海斌张景成张玉婷臧甲忠耿姗南军朱金剑肖寒张尚强彭雪峰宋国良王帅张雪梅
Owner CHINA NAT OFFSHORE OIL CORP
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