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Coal tar hydrogenation pretreatment catalyst and preparation method thereof

A technology of hydrotreating pretreatment and catalyst, applied in refining to remove heteroatoms, etc., can solve the problems of low removal rate, inability to meet subsequent deep hydrogenation feed, waste of resources, etc. Long, high metal removal effect

Inactive Publication Date: 2015-04-29
SICHUAN KAIWOSI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the national coal tar output has exceeded 20 million tons per year, but the actual deep processing of coal tar is less than 8 million tons per year, which is a serious waste of resources
[0007] Although the above-mentioned catalysts have improved the amount of metal removal, their removal rate is still small, which cannot meet the needs of subsequent deep hydrogenation feed.

Method used

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  • Coal tar hydrogenation pretreatment catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Take 141.0 g of macroporous dry rubber powder, add 3.0 g of scallop powder, 2.5 g of borax (analytical pure), and mix well. Dissolve 8.0g of commercially available PVA1788 powder in 115mL of water under stirring and heating slowly. After the dissolution is complete, add it to the above-mentioned uniformly mixed dry rubber powder. Strips, the extruded strips were dried at 120°C for 5 hours, baked at 550°C for 3 hours, and then taken out, which was designated as carrier A.

[0042] Take 4.01g of molybdenum oxide (AR), 1.40g of basic nickel carbonate (AR), 0.81g of concentrated phosphoric acid (AR), add 100mL of water, continue to heat and reflux under stirring, stop heating after the solution becomes transparent, and cool down to room temperature for later use. Take 80 g of carrier sample A and impregnate it by the pore saturation method. After impregnation, let it air in a fume hood for 3 hours, then dry it at 120° C. for 3 hours, and bake it in a muffle furnace at 350° C...

Embodiment 2

[0044] Take 141.0 g of macroporous dry rubber powder, add 3.0 g of scallop powder, 2.5 g of boric acid (analytical pure), and mix well. Dissolve 8.0g of commercially available PVA1788 powder in 115mL of water under stirring and heating slowly. After the dissolution is complete, add it to the well-mixed dry rubber powder. , the extruded strips were dried at 120°C for 5 hours, then calcined at 550°C for 3 hours and then taken out to obtain a carrier.

[0045] Take 4.01g of molybdenum oxide (AR), 1.40g of basic nickel carbonate (AR), 0.81g of concentrated phosphoric acid (AR), add 100mL of water, continue to heat and reflux under stirring, stop heating after the solution becomes transparent, and cool down to room temperature for later use. Take 80 g of the carrier, impregnate it by pore saturation method, after impregnation, let it air in the fume hood for 3 hours, dry it at 120°C for 3 hours, and bake it in a muffle furnace at 350°C for 20 hours to obtain the catalyst.

Embodiment 3

[0047] Take 141.0 g of macroporous dry rubber powder, add 3.0 g of starch, 2.5 g of borax (analytical pure), and mix well. Dissolve 8.0g of commercially available PVA1788 powder in 115mL of water under stirring and heating slowly. After the dissolution is complete, add it to the well-mixed dry rubber powder. , the extruded strips were dried at 120°C for 5 hours, then calcined at 550°C for 3 hours and then taken out to obtain a carrier.

[0048] Take 4.01g of molybdenum oxide (AR), 1.40g of basic nickel carbonate (AR), 0.81g of concentrated phosphoric acid (AR), add 100mL of water, continue to heat and reflux under stirring, stop heating after the solution becomes transparent, and cool down to room temperature for later use. Take 80 g of the carrier, impregnate it by pore saturation method, after impregnation, let it air in the fume hood for 3 hours, dry it at 120°C for 3 hours, and bake it in a muffle furnace at 350°C for 20 hours to obtain the catalyst.

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Abstract

The invention provides a coal tar hydrogenation pretreatment catalyst and a preparation method thereof. The preparation method comprises the following steps: A: taking macroporous dry glue powder of which the main phase is pseudoboehmite; B. dissolving polyvinyl alcohol in water, and adding acid to obtain an acidic glue solution; C. evenly mixing the acidic glue solution, macroporous dry glue powder and assistants, and carrying out strip molding to obtain dry strips; D. carrying out high-temperature roasting on the dry strips to obtain an alumina support; and E. impregnating the alumina support in metal components, and roasting to obtain the macroporous guard catalyst. The catalyst has the advantages of high hydrogenation demetallization activity, high metal removal rate, long operation cycle, mild operating conditions and low requirements for equipment.

Description

technical field [0001] The invention relates to the technical field of coal tar hydrogenation, in particular to a coal tar hydrogenation pretreatment catalyst and a preparation method thereof. Background technique [0002] With the rapid development of the world economy, oil resources as fuel are becoming more and more tense, and the price of oil has risen from more than 20 US dollars a few years ago to nearly 100 US dollars now, and as the economies of developing countries such as China and India continue to Steady growth, oil is becoming more and more scarce. my country's current oil imports have exceeded 200 million tons, accounting for more than half of the total consumption, and this trend is still continuing. Therefore, the emergence of new alternative energy sources or fuels has great impact on our people. Economic development is of paramount importance. [0003] Coal tar is an organic mixture dominated by aromatic hydrocarbons, which can be processed into various chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J23/882B01J23/888C10G45/08
Inventor 吴建明
Owner SICHUAN KAIWOSI ENERGY TECH
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