Preparation method of copper-based desulfurizer, copper-based desulfurizer and preparation system

A desulfurizer, copper-based technology, applied in the preparation of copper-based desulfurizers, copper-based desulfurizers and preparation systems, can solve the problems of material waste, acid rain, environmental pollution, etc., to ensure the safety of human life, good dispersion performance, The effect of enriching the pore structure

Inactive Publication Date: 2018-12-04
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, coal accounts for more than 90% of the available reserves of China's energy and mineral resources, and oil and gas account for less than 10%. The consumption structure is neither safe nor sustainable
[0015] (1) In the prior art, inorganic alkalis are generally used for precipitation. Due to the solubility of inorganic alkalis, there are fewer types of alkalis available for precipitating agents. Inorganic alkalis such as sodium carbonate and sodium hydroxide are relatively alkaline. During the reaction process, the controllability and adjustability of the pH range are limited, and the reaction is more violent
[0016] (2) In the prior art, the desulfurizer is obtained by precipitating the active component and mixing it with the auxiliary agent after drying. The defect of this method is that the auxiliary agent and the active group are mechanically mixed, and some raw materials are still in the granular state during the mixing process. Therefore, the raw mate...

Method used

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  • Preparation method of copper-based desulfurizer, copper-based desulfurizer and preparation system
  • Preparation method of copper-based desulfurizer, copper-based desulfurizer and preparation system
  • Preparation method of copper-based desulfurizer, copper-based desulfurizer and preparation system

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preparation example Construction

[0051] figure 1 , the preparation method of the copper-based desulfurizer provided by the embodiment of the present invention comprises:

[0052] S101: Select Cu 2+ As the source of active components, add a mixed solution prepared by one or several soluble salts of metal aluminum salts with a mass fraction of 30% to 70% relative to the main active component, and use organic amines such as alcohol amines , the polyene polyamine is used as a precipitating agent, the pH is controlled under the conditions of heating in a water bath and mechanical stirring, and a composite hydroxide precipitate A is obtained by coprecipitation;

[0053] S102: Aging the obtained composite colloid A to a stable state, then adding 1-10% molecular sieve as a channel aid, 1-10% polyethylene glycol as a dispersant, heating and stirring mechanically after ultrasonication in a water bath, and controlling 8

[0054] S103: The obtained mixed sediment B is centrifuged...

Embodiment 1

[0057] 1. Weigh 0.04mol of AlCl 3 .6H 2 O, 0.08mol of Cu(NO 3 ) 2 , configured as Cu(NO 3 ) 2 The solution A with a mass fraction of 10% was poured into a 500mL three-necked flask for later use.

[0058] 2. Weigh again 0.121 mol of diethylenetriamine (EDTA), and configure it into 10% lye B for later use.

[0059] 3. Will be loaded with Cu(NO 3 ) 2 Place the three-neck flask of solution A in a water bath at 70°C, start stirring at 400r / min, and add alkali solution B to Cu(NO 3 ) 2 In solution A, the dropping time is controlled at about 1.5h, and the control is 8

[0060] 4. After the dropwise addition was completed, continue to keep warm and stir for 1 hour, then stop the reaction, and place the obtained precipitate at the reaction temperature to age for 18 hours.

[0061] 5. After the aging is completed, add 5% 13X molecular sieve as a channel aid and 5% polyethylene glycol as a dispersant, ultrasonicate for 1 hour in a water bath at 70°C, and centrifuge and...

Embodiment 2

[0066] 1. Weigh 0.06mol of AlCl 3 .6H 2 O, 0.08mol of Cu(NO 3 ) 2 , configured as Cu(NO 3 ) 2 The solution A with a mass fraction of 10% was poured into a 500mL three-necked flask for later use.

[0067] 2. Weigh again 0.147 mol of diethylenetriamine (EDTA), and configure it into 10% lye B for later use.

[0068] 3. Will be loaded with Cu(NO 3 ) 2 Place the three-neck flask of solution A in a water bath at 70°C, start stirring at 400r / min, and add alkali solution B to Cu(NO 3 ) 2 In solution A, the dropping time is controlled at about 1.5h, and the control is 8

[0069] 4. After the dropwise addition is completed, continue to keep warm and stir for 1 hour, then stop the reaction to obtain the obtained precipitate and age it at the reaction temperature for 18 hours.

[0070] 5. After the aging is completed, add 5% 13X molecular sieve as a channel aid and 5% polyethylene glycol as a dispersant, ultrasonicate for 1 hour in a water bath at 70°C, and centrifuge a...

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PUM

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Abstract

Belonging to the technical field of environmental protection and chemical industry, the invention discloses a preparation method of a copper-based desulfurizer, a copper-based desulfurizer and a preparation system. The preparation method includes: selecting Cu<2+> as the active component source, selecting Al<3+> as the carrier source, adopting alcohol amine as the precipitant, and using coprecipitation technique to prepare a compound hydroxide precipitate, then adding a molecular sieve and polyethylene glycol as the pore-forming agent, conducting full mechanical stirring, then carrying out aging, washing, drying, roasting and grinding, then adding a certain amount of binder, and performing kneading molding, thus obtaining the high-precision copper-based desulfurizer. The desulfurizer prepared with alcohol amine organic alkali as the precipitant has abundant pore structure, which makes the desulfurization precision reach 10ppb or below. Therefore, in the process of indirect coal liquefaction to produce various chemicals, the desulfurizer plays an important role in deep purification of syngas and prevention of downstream Fischer-Tropsch synthesis noble metal catalyst poisoning.

Description

technical field [0001] The invention belongs to the technical fields of environmental protection and chemical industry, and in particular relates to a preparation method of a copper-based desulfurizer, a copper-based desulfurizer and a preparation system. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] At present, coal accounts for more than 90% of the available reserves of China's energy and mineral resources, and oil and gas account for less than 10%. The consumption structure is neither safe nor sustainable. [0004] Therefore, the development of coal liquefaction products and clean fuel utilization technology is an inevitable choice to solve the shortage of petroleum energy in my country. Coal liquefaction is a process in which coal is used as raw material and oil is obtained under the action of a catalyst, mainly including direct liquefaction and indirect liquefaction; the direct liquefaction o...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/52C10L1/00
CPCB01D53/81B01D53/52B01D2251/602C10L1/00
Inventor 夏明桂何秋瑾王彩凤夏广曲瑞娜王琦彭雄义王伟明吴剑虹薛志勇陈飞飞
Owner WUHAN TEXTILE UNIV
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