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Method for extracting tungsten and nickel from petroleum hydrogenation waste catalyst

A waste catalyst and catalyst technology, which is applied in the extraction of tungsten and nickel, and the extraction of tungsten and nickel from waste catalysts in petroleum hydrogenation, can solve the problems of rare comprehensive recovery and utilization, achieve great recovery and utilization value and economic benefits, and realize recycling. , the effect of improving the technical service level and product market competitiveness

Inactive Publication Date: 2016-01-27
刘楚玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a lot of research and reports have been carried out on the recovery of useful metals in spent catalysts at home and abroad, but mainly for the cobalt-nickel system, vanadium-molybdenum system, and cobalt-molybdenum system. There are few reports on the comprehensive recycling of tungsten

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for extracting tungsten and nickel from spent petroleum hydrogenation catalysts, comprising the steps of:

[0030] (1) Dry the spent catalyst in a vacuum drying oven at 80°C for 24 hours to remove its moisture;

[0031] (2) Then place it in a sealed laboratory sample preparation pulverizer for pulverization;

[0032] (3) Grinding and sieving the crushed catalyst;

[0033] (4) Put the sieved spent catalyst into the muffle furnace, set the temperature of the muffle furnace to 500°C, and the oxidation roasting time to 3h.

[0034] (5) In the calcined catalyst according to WO 3 Add sodium carbonate to 4 times the amount, and continue roasting in the muffle furnace. The temperature of the muffle furnace is 600 ° C, and the oxidation roasting time is 3 hours;

[0035] (6) Dissolve the roasted powder in a constant temperature water bath, stir and heat, the solid-to-liquid ratio is 1:3, the leaching temperature is 80°C, and the leaching time is 1h;

[0036] (7) Aft...

Embodiment 2

[0040] A method for extracting tungsten and nickel from spent petroleum hydrogenation catalysts, comprising the steps of:

[0041] (1) Dry the spent catalyst in a vacuum drying oven at 90°C for 36 hours to remove its moisture;

[0042] (2) Then place it in a sealed laboratory sample preparation pulverizer for pulverization;

[0043] (3) Grinding and sieving the crushed catalyst;

[0044] (4) Put the sieved spent catalyst into the muffle furnace, set the temperature of the muffle furnace to 600°C, and the oxidation roasting time to 4h.

[0045] (5) In the calcined catalyst according to WO 3 Add sodium carbonate to 5 times the amount, and continue roasting in the muffle furnace. The temperature of the muffle furnace is 700 ° C, and the oxidation roasting time is 4 hours;

[0046] (6) Dissolve the roasted powder in a constant temperature water bath, stir and heat, the solid-to-liquid ratio is 1:4, the leaching temperature is 90°C, and the leaching time is 2 hours;

[0047] (7...

Embodiment 3

[0051] A method for extracting tungsten and nickel from spent petroleum hydrogenation catalysts, comprising the steps of:

[0052] (1) Dry the spent catalyst in a vacuum drying oven at 100°C for 48 hours to remove its moisture;

[0053] (2) Then place it in a sealed laboratory sample preparation pulverizer for pulverization;

[0054] (3) Grinding and sieving the crushed catalyst;

[0055] (4) Put the sieved spent catalyst into the muffle furnace, set the temperature of the muffle furnace to 700°C, and the oxidation roasting time to 5h.

[0056] (5) In the calcined catalyst according to WO 3Add sodium carbonate to 7 times the amount, and continue roasting in the muffle furnace. The temperature of the muffle furnace is 800 ° C, and the oxidation roasting time is 5 hours;

[0057] (6) Dissolve the calcined powder in a constant temperature water bath, stir and heat, the solid-to-liquid ratio is 1:5, the leaching temperature is 100°C, and the leaching time is 3 hours;

[0058] ...

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Abstract

The invention relates to a method for extracting tungsten and nickel from a petroleum hydrogenation waste catalyst, and belongs to the technical field of petrochemical industry. The method comprises oxidation roasting, sodiumination roasting and a leaching test; the oxidation roasting refers to removing water of the waste catalyst in a vacuum drying oven, and then, putting the waste catalyst into a sealed type sample preparation comminutor for comminution; certain mass of the waste catalyst which is grinded and screened is put into a muffle furnace to carry out oxidation roasting for 3-5 hours; sulfides are converted into oxides; and the waste catalyst and sodium carbonate are put into the muffle furnace in certain proportion to carry out high-temperature roasting, so that tungsten oxide is converted into soluble sodium tungstate. The method can reduce environmental pollution, realizes resource cyclic utilization, and is beneficial for reducing production cost of a catalyst manufacturing enterprise, and improving technological level of service and product market competitiveness; and the recycled tungsten and nickel have a great recovery use value and great economic benefits.

Description

technical field [0001] The invention relates to a method for extracting tungsten and nickel, in particular to a method for extracting tungsten and nickel from waste petroleum hydrogenation catalysts, and belongs to the technical field of petrochemical industry. Background technique [0002] Catalysts are widely used in petroleum refining and chemical industries, and about 80% of the reactions in modern chemical production are inseparable from corresponding catalysts. The annual consumption of catalysts in the world is about 800,000 tons (excluding sulfuric acid and hydrofluoric acid catalysts for alkylation), of which, about 415,000 tons are catalysts for oil refining, about 335,000 tons are catalysts for chemical industry, and about It is 47,000 tons. Catalysts usually contain aluminum-silicon carriers, such as rare metals such as molybdenum, cobalt, vanadium, nickel, etc. These metals have special structures and activities, which can improve the impurity removal rate of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/00C22B34/36
CPCY02P10/20
Inventor 刘楚玲
Owner 刘楚玲
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