In situ outer prevulcanization method for hydrogenation catalyst

A hydrogenation catalyst and pre-sulfiding technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of long vulcanization process, high processing cost, flammable vulcanizing agent, etc.

Inactive Publication Date: 2004-12-29
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) The vulcanizing agent added in the vulcanization process and the water and hydrogen sulfide generated by the reaction can easily cause corrosion of the high-pressure reactor and related equipment, resulting in equipment damage and potential safety hazards. This phenomenon has occurred many times at home and abroad
[0005] (3) The vulcanization process is longer, delaying the start time
[0006] (4) The vulcanizing agent used is flammable and toxic, and pollutes the environment during the vul

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: the preparation of catalyst carrier

[0024] Take by weighing 131g of alumina (macroporous pseudoboehmite produced by Shandong Aluminum Company) with a water content of 27.1%, 4.6g of phosphorus pentoxide (chemically pure reagent), 2.0g of scallion powder, and add 2% after fully mixing 80ml of nitric acid aqueous solution, after fully kneading, extrude into a cylindrical strip with a diameter of 1.6mm on an extruder, and bake in an oven at 110-120°C for 6-12 hours to obtain a dry carrier. Then it was placed in a muffle furnace and calcined in air at a temperature of 500° C. for 4 hours to obtain a catalyst carrier.

Embodiment 2

[0025] Embodiment 2: the preparation of active component impregnation solution

[0026] Weigh molybdenum trioxide (technical grade reagent) 31.3g, basic nickel carbonate (technical grade reagent) 5.43g, add 1.97ml phosphoric acid (85%) and 70ml distilled water, place in the there-necked flask with stirring and condenser, stir Heating to 80-90°C to dissolve, and obtain a blue-green clear solution.

Embodiment 3

[0027] Example 3: Impregnation of Active Components

[0028] Weigh 100 g of the carrier prepared in Example 1, impregnate the carrier with 70 ml of the active component impregnating solution prepared in Example 1, and dry the impregnated carrier in an oven at 110 to 120° C. for 12 hours to obtain Mo and Ni-loaded, Dry Catalyst A.

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PUM

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Abstract

The in-situ hydrogenation catalyst pre-sulfurizing method is to use ammonium sulfide solution containing sulfur to treat petroleum fraction hydrogenating catalyst with oxide of IVB metal Mo or W and VIII metal Co or Ni or their precursor loaded and to convert the oxide of the active component or their precursor into metal sulfide with hydrogenation activity. The outside pre-sulfuizing of the hydrogenation catalyst is utilized to replace available inside pre-sulfuizing, which has complicated operation and expensive cost. The method is suitable for all kinds of petroleum fraction hydrogenating catalyst and the processed catalyst has hydrogenation activity reaching or even exceeding that of internal pre-sulfurized one.

Description

technical field [0001] The invention relates to a new method for off-site presulfurization of hydrogenation catalysts, which belongs to the presulfurization technology of hydrogenation catalysts in petrochemical industry. It mainly uses a new type of sulfiding agent to carry out "outside" presulfurization of hydrogenation catalyst to achieve the purpose of "inside" presulfurization which was complex in operation and expensive in the past. The technology is characterized by the use of sulfur-containing ammonium sulfide [(NH 4 ) 2 S] solution treatment of any petroleum fraction hydrogenation catalyst loaded with Mo, W of Group IVB and Co, Ni oxides of Group VIII or their precursors, and make the active components (Mo, W, Co, A method for converting Ni) oxides or their precursors into metal sulfides with hydrogenation activity. Background technique [0002] The hydrogenation process of petroleum fractions is the key technology for producing clean oil products, among which, t...

Claims

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Application Information

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IPC IPC(8): B01J37/20
Inventor 刘晨光柴永明赵会吉赵瑞玉殷长龙邢金仙方朝亮于建宁
Owner BC P INC CHINA NAT PETROLEUM CORP
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