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High-sulfur-nitrogen raw oil aromatic hydrocarbon adsorbent and preparation method thereof

A technology of adsorbent and raw oil, applied in chemical instruments and methods, refined hydrocarbon oil, petroleum industry, etc., to achieve the effect of enhancing synergistic adsorption capacity, improving performance and stabilizing operation

Pending Publication Date: 2022-08-09
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patents mainly process high-sulfur-nitrogen feedstock oil such as straight-run gasoline and diesel through catalytic reaction and adsorption separation. Among them, the adsorption and separation process for processing straight-run gasoline and diesel still requires pretreatment to remove sulfur and nitrogen compounds, so as to avoid sulfur and nitrogen Compounds cause the deactivation of the adsorbent. There is no adsorbent that can not be affected by the sulfur and nitrogen compounds in the raw oil, and can realize the adsorption and separation of high-purity aromatics

Method used

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  • High-sulfur-nitrogen raw oil aromatic hydrocarbon adsorbent and preparation method thereof
  • High-sulfur-nitrogen raw oil aromatic hydrocarbon adsorbent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Pore channel modification: Weigh 10kg of silica gel, add 50kg of an aqueous solution containing 250g of dodecylphenol polyoxyethylene ether OP-10, treat at 40°C for 12h, and then filter to obtain micelles formed by water and OP-10 The filter cake that fills the pore structure.

[0027] (2) metal activation: the n-butylamine solution of 405g aluminum isopropoxide and 20kg ethylene glycol was weighed for peptization, wherein the ethylene glycol mass concentration was 30%, and the n-butylamine mass concentration was 5%, and then with the step (1) The obtained filter cake is mixed, treated at 60° C. for 24 hours, filtered, washed and dried to obtain an adsorbent precursor.

[0028] (3) Stability adjustment: place the adsorbent precursor obtained in step (2) in an autoclave, add a mixed solvent of benzothiophene and pyridine with a mass ratio of 5, treat at 120°C for 12h, then filter and dry , calcined at 500 °C for 12 h to obtain the adsorbent.

[0029] (4) Adsorbent ...

Embodiment 2

[0031] (1) Pore modification: Weigh 10kg of amorphous silica-alumina, add 100kg of an aqueous solution containing 1500g of nonylphenol polyoxyethylene ether TX-10, treat at 100°C for 2h, and then filter to obtain a glue formed by water and TX-10 The bundles fill the filter cake of the pore structure.

[0032](2) Metal activation: Weigh 10635g of tetrabutyl titanate and 20kg of triethylamine solution of ethylene glycol for peptization, wherein the ethylene glycol mass concentration is 60%, the triethylamine mass concentration is 20%, and then with the step (1) The obtained filter cake is mixed, treated at 120° C. for 4 hours, filtered, washed and dried to obtain the adsorbent precursor.

[0033] (3) Stability adjustment: place the adsorbent precursor obtained in step (2) in an autoclave, add a mixed solvent of benzyl mercaptan and quinoline with a mass ratio of 30, treat at 200° C. for 2 hours, then filter and dry , calcined at 700 °C for 2 h to obtain the adsorbent.

[0034]...

Embodiment 3

[0036] (1) Pore modification: Weigh 10kg of alumina, add 80kg of an aqueous solution containing 800g of nonylphenol polyoxyethylene ether TX-10, treat at 60°C for 8h, and then filter to obtain a micellar filling formed by water and TX-10 Filter cake with pore structure.

[0037] (2) metal activation: weighing 1500g of tetraethyl titanate and 20kg of ethylenediamine solution of 2-propylene glycol for peptization, wherein the 2-propylene glycol mass concentration is 40%, the ethylenediamine mass concentration is 10%, and then with the step (1) The obtained filter cake is mixed, treated at 100° C. for 6 hours, filtered, washed and dried to obtain the adsorbent precursor.

[0038] (3) Stability adjustment: place the adsorbent precursor obtained in step (2) in an autoclave, add a mixed solvent of phenylene sulfide and acridine with a mass ratio of 10, treat at 150°C for 8h, then filter, bake Dry and calcined at 550 °C for 6 h to obtain the adsorbent.

[0039] (4) Evaluation of ad...

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Abstract

The invention discloses a high-sulfur-nitrogen raw oil aromatic hydrocarbon adsorbent and a preparation method thereof, the adsorbent is a metal modified silicon-aluminum adsorbent, and the adsorbent is prepared through the processes of pore modification, metal activation and stability adjustment. The adsorbent disclosed by the invention is applied to a simulated moving bed adsorption separation process, has a selective adsorption effect on aromatic hydrocarbon in high-sulfur-nitrogen raw oil, and is repeatedly used after being desorbed and regenerated by a desorption agent, so that the purity of aromatic hydrocarbon components is greater than 99%, and the purity of non-aromatic hydrocarbon components is greater than 99%.

Description

technical field [0001] The invention relates to an aromatic hydrocarbon adsorbent for high-sulfur-nitrogen feedstock oil and a preparation method. Background technique [0002] At present, my country is still in the stage of medium and high-speed development. As one of the pillar industries to ensure the development of the national economy, the refining and chemical industry still has great potential for development. Based on the processing and utilization of fossil energy, the refining and chemical industry has a large industrial scale, a large amount of energy consumption, and a large total carbon emission. Focusing on the realization of the "dual carbon" goal, it is urgent to implement new development concepts and explore new development models, so as to achieve low carbon emissions. Carbon transition development. Under the national policy of "dual carbon" and "dual control", my country's refining and chemical industry is facing a severe development situation. The overal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/10B01J20/18B01J20/28B01J20/30C10G25/00C10G25/08
CPCB01J20/103B01J20/08B01J20/18B01J20/2803B01J20/0211B01J20/0251B01J20/0248C10G25/003C10G25/08C10G2300/201C10G2300/1037
Inventor 于海斌臧甲忠李滨孙振海李犇洪美花姜雪丹隋芝宇李佳
Owner CNOOC TIANJIN CHEM RES & DESIGN INST