Coal tar hydrogenation catalyst, and preparation method and application thereof

A technology of hydrogenation catalyst and coal tar, which is applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instrument and method, etc., can solve the problems of limited improvement range, and achieve the effect of reducing waste water generation, improving water resistance, and good wear resistance

Active Publication Date: 2021-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent improves the wear resistance of the catalyst by adding alumina cellulose, and does not start from the direction of the source carrier material, and the improvement range is limited

Method used

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  • Coal tar hydrogenation catalyst, and preparation method and application thereof
  • Coal tar hydrogenation catalyst, and preparation method and application thereof
  • Coal tar hydrogenation catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Mix and co-cook with aluminum hydroxide and sodium hydroxide to form a concentration of 345gAl 2 o 3 / L solution, and then diluted with 3.5wt% NaOH aqueous solution to prepare a caustic ratio of 1.30 and a concentration of 40 gAl 2 o 3 / L of sodium metaaluminate solution for use; the preparation concentration is 50gSiO 2 / L, a water glass solution with a modulus of 2.8 for use; prepare a C9 monoalkyl ether phosphate (pKa=4.3, HLB=7) solution with a concentration of 0.2g / mL for use; use D001 with a mesh size of 60 mesh Pore ​​strongly acidic styrene-based cation-exchange resin is prepared into a suspension with a solid content of 50 wt%.

[0067] Add 800mL deionized water into the 5000mL reactor as the bottom water, start stirring and heating, after the deionized water is heated to 70°C, add the above four materials into the reactor in parallel, and control the flow rate of sodium metaaluminate to 15mL / min, the flow velocity of water glass is 13mL / min, the flow velo...

Embodiment 2

[0072] Other conditions are the same as embodiment 1, just change the concentration of water glass into 30gSiO 2 / L, flow rate is 13.3 mL / min, 60 purpose D001 macroporous strongly acidic styrenic cation exchange resin is changed to 80 purpose D002 macroporous strong acidic styrenic cation exchange resin, and the pH value of the slurry in the reactor is changed to 8.5. The obtained slurry was aged at 250° C. for 7 hours to obtain high-silicon pseudo-boehmite a2, carrier Z-2 and catalyst C-2. The specific properties of the catalyst are shown in Table 1.

Embodiment 3

[0074] Other conditions are the same as in Example 1, except that C9 monoalkyl ether phosphate is changed to C9 alkyl phosphate (pKa=4.8, HLB=5), the pH value of the gel is adjusted to 9.0, and the drying condition is changed to 150°C for 6 hours , to obtain high silicon pseudo-boehmite a3.

[0075] Take 1000g of the manufactured a3 pseudo-boehmite raw material, add 7.3g of carbon black and 32.47g of rhodium nitrate, and then shape it into a ball, and roast the balled sample at 800°C for 3 hours to obtain a carrier Z3 with a particle size of 0.3-0.7mm. The properties are shown in Table 1.

[0076] Weigh 51.61g of phosphoric acid, add 900mL of distilled water, then add 140.18g of molybdenum oxide and 64.25g of basic nickel carbonate in sequence, heat and stir until completely dissolved, then dilute the solution to 1000mL with distilled water to obtain solution L2.

[0077] Carrier Z3 was saturated and impregnated with solution L2, dried at 110°C for 4 hours, and calcined at 55...

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Abstract

The invention discloses a coal tar hydrogenation catalyst and a preparation method thereof. The preparation method comprises the following steps: firstly preparing high-silicon pseudo-boehmite, then mixing the obtained high-silicon pseudo-boehmite with an auxiliary agent, molding, drying and roasting to obtain a carrier, finally introducing an active metal component onto the obtained carrier, and further drying and roasting to obtain the catalyst. According to the preparation method of the coal tar hydrogenation catalyst, the high-silicon pseudo-boehmite is adopted as a raw material in the preparation process, and the auxiliary agent is added in the carrier preparation process and enters an aluminum oxide structure to form a water-resistant component, so that the water resistance of the catalyst is improved, and the coal tar hydrogenation catalyst with good wear resistance and hydrogenation performance is prepared.

Description

technical field [0001] The invention relates to the field of petrochemical industry, and relates to the preparation and application of a coal tar hydrogenation catalyst, in particular to the preparation and application of an ebullated bed coal tar hydrogenation catalyst. Background technique [0002] China is a country rich in coal, low in gas, and short of oil, and the processing and utilization of coal tar has been increasingly valued by the state. Coal tar is a liquid by-product obtained in the pyrolysis process of coal. It has a pungent odor, is black or dark brown, and is viscous. The yield is about 3% to 4%. [0003] Coal tar raw materials contain a large amount of unsaturated hydrocarbons such as olefins and polycyclic aromatic hydrocarbons, as well as sulfur and nitrogen compounds, which have the characteristics of high acidity, high colloid content, and poor product stability (light stability, storage stability, oxidation stability) and so on. , so direct combustio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46B01J23/755B01J27/19B01J35/00B01J35/02B01J35/10B01J37/02B01J37/30B01J32/00C10G45/08
CPCB01J27/19B01J35/1019B01J35/1042B01J35/023B01J37/30B01J23/755B01J23/464B01J37/0201B01J35/002C10G45/08C10G2300/202
Inventor 朱慧红金浩吕振辉刘璐杨光杨涛
Owner CHINA PETROLEUM & CHEM CORP
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