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Resourceful utilization method of waste catalyst

A waste catalyst and recycling technology, applied in the field of environmental protection and comprehensive utilization of resources, can solve the problems of resource loss such as heavy metals, incomplete metal recovery, pollution, etc., to achieve the effect of resource regeneration and utilization

Inactive Publication Date: 2015-05-20
DALIAN DONGTAI RESOURCE RENEWABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former not only causes groundwater and soil pollution, but also causes the loss of resources such as heavy metals, while the latter is incomplete in metal recovery and ignores the utilization of other components of spent catalysts (carbon deposits, oil, sulfur, alumina / nickel) , resulting in waste of resources and secondary pollution to the environment, so it is of practical significance to develop new resource utilization technologies for waste catalysts so that waste resources can be recycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Refinery spent catalyst 500t, spent catalyst The appearance is black, clover-shaped, particle size φ1.3×(3~5)mm, spent catalyst Contains 4.6% ceramic balls, 7.4% carbon deposits, 12.2% oil, 5.4% sulfur, 5.3% molybdenum, 7.5% vanadium, 5.2% nickel, and 11.9% aluminum, of which molybdenum, vanadium, and nickel exist in the form of metal sulfides, and aluminum is in the form of exist in the form of metal oxides.

[0037] (1) Use a 10×10mm sieve to sieve out spent catalyst Medium porcelain balls, siftedspent catalyst , Put it into the deoiling furnace for deoiling, decarbonization and desulfurization treatment, the residence time is 70min, the temperature is 960°C, and the steam with a pressure of 0.3Mpa is produced. The steam generated is used for leaching water heating and pipeline heat tracing.

[0038] (2) The deoiled material after deoiling in step (1) is mixed with sodium salt at a ratio of 3.4:1, and the ingredients are mixed with a mixer and water, and then sent ...

Embodiment 2

[0051] Refinery spent catalyst 1000t, spent catalyst The appearance is black, clover-shaped, particle size φ1.3×(3~5) mm, spent catalyst Contains 4.3% ceramic balls, 8.2% carbon deposits, 10.7% oil, 4.8% sulfur, 4.6% molybdenum, 6.7% vanadium, 5.4% nickel, and 12.3% aluminum, of which molybdenum, vanadium, and nickel exist in the form of metal sulfides, and aluminum is in the form of exist in the form of metal oxides.

[0052] (1) Use a 10×10mm sieve to sieve out spent catalyst Medium porcelain balls, sifted spent catalyst , Put it into the deoiling furnace for deoiling, decarbonization and desulfurization treatment, the residence time is 60min, the temperature is 970°C, and the steam with a pressure of 0.3Mpa is produced. The steam generated is used for leaching water heating and pipeline heat tracing.

[0053] (2) The deoiled material after deoiling in step (1) is mixed with sodium salt at a ratio of 3.8:1, and the ingredients are mixed with a mixer and water, and then s...

Embodiment 3

[0066] Pick spent catalyst 1500t, spent catalyst The appearance is black, clover-shaped, particle size φ1.3×(3~5)mm, spent catalyst Contains 4.9% ceramic balls, 9.3% carbon deposits, 11.2% oil, 5.8% sulfur, 6.2% molybdenum, 7.8% vanadium, 5.3% nickel, and 10.6% aluminum, of which molybdenum, vanadium, and nickel exist in the form of metal sulfides, and aluminum is in the form of exist in the form of metal oxides.

[0067] (1) Use a 10×10mm sieve to sieve out spent catalyst Medium porcelain balls, sifted spent catalyst , Put it into the deoiling furnace for deoiling, decarbonization and desulfurization treatment, the residence time is 60min, the temperature is 980°C, and the steam with a pressure of 0.3Mpa is produced, and the steam generated is used for leaching water heating and pipeline heat tracing.

[0068] (2) The deoiled material after deoiling in step (1) is mixed with sodium salt at a ratio of 4:1, and the ingredients are mixed with a mixer and water, and then sent...

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PUM

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Abstract

The invention relates to a resourceful utilization method of a waste catalyst. The resourceful utilization method comprises the following steps of putting the waste catalyst into a de-oiling furnace and carrying out de-oiling, decarburization and desulfurization treatment by virtue of the heat value to obtain a de-oiled material; mixing and stirring the de-oiled material and sodium salt to obtain a mixture, putting the mixture into a rotary kiln and carrying out sodium modification and roasting on the mixture at 900-1100 DEG C to obtain a sodium-modified material; carrying out multistage leaching on the sodium-modified material, recovering metallic nickel and aluminum to obtain a nickel-aluminum powder product and a leaching solution; adding a sulfate precipitating agent, precipitating to remove silicon, aluminum and phosphorus impurities to obtain a mixed solution of sodium molybdate and sodium vanadate; separating molybdenum from vanadium by virtue of an ion exchange method to obtain a sodium molybdate solution and a pure sodium vanadate solution; adding an ammonium salt precipitating agent into the pure sodium vanadate solution, precipitating to recover vanadium to obtain a high-purity ammonium metavanadate product and a sodium sulfate solution; extracting, purifying and enriching molybdenum with a solvent to obtain a pure sodium molybdate solution and a sodium sulfate solution; adding a sulfuric acid precipitating agent into the sodium molybdate solution and precipitating to recover molybdenum to obtain a high-purity molybdic acid product and a sodium sulfate solution; carrying out ion exchange on the sodium sulfate solution, recovering molybdenum and vanadium in the solution, carrying out multi-effect concentration crystallization to obtain a product anhydrous sodium sulfate, recovering sodium sulfate in the produced solution and returning condensed water.

Description

technical field [0001] The invention relates to metallurgical technologies such as oxidative roasting, solvent extraction, ion exchange, concentrated crystallization, chemical precipitation, etc., uses waste catalysts as resources, and produces corresponding chemical products from each component, and belongs to the field of environmental protection and resource comprehensive utilization. Background technique [0002] The secondary processing capacity of crude oil is gradually increasing, which makes the amount of scrapped refining catalysts increase year by year. The activity of refining catalysts will gradually decrease with time during the use process, which will eventually lead to the catalyst being scrapped. The main reasons for catalyst deactivation: First, carbon deposition and deactivation. The carbon-containing deposits on the catalyst surface are called coking. Due to the deposition of carbon-containing substances and other substances in the pores of the catalyst, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00C01G31/00C01D5/00C01F11/46C22B7/00C22B21/00C22B23/00
CPCC01D5/00C01F11/46C01G31/00C01G39/00C22B7/009C22B21/003C22B23/026Y02P10/20
Inventor 李俊梁昌雄邵成志刘忠军迟洪建于校生管殿春
Owner DALIAN DONGTAI RESOURCE RENEWABLE
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