Copper series purifying agent and preparation method thereof

A purification agent and copper-based technology, applied in hydrogen separation, using solid contact hydrogen separation, etc., can solve the problem of less research on purification agents

Active Publication Date: 2012-03-28
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the research on purifiers for removing As, S, Cl and other elements is relatively extensive, while the research on purifiers for Fe, Ni and other elements is less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Weigh Zn(NO 3 ) 2 ·6H 2 O37.74g, Al(NO 3 ) 3 9H 2 O90.55g, Mg(NO 3 ) 2 ·6H 2 O40.57g, add 10% deionized water to make 1000ml solution; Weigh anhydrous Na 2 CO 3 80.0g was dubbed into 1000ml solution. The two solutions are heated to 70-80°C for co-precipitation, the pH of the end point is controlled to be 7.0-7.5, and the aging time is 0.5-1h.

[0024] Weigh Zn(NO 3 ) 2 ·6H 2 O78.93g, Cu(NO 3 ) 2 ·3H 2 O226.5g, add 10% deionized water to make 1500ml solution; weigh anhydrous Na 2 CO 3 135.07g was dubbed into 1500ml solution. Heat the two solutions to 80°C-90°C and co-precipitate into the above solution, control the end point pH to 6.5-7.0, add 30g active γ-Al after aging for 0.5-1h 2 o 3 , continue heating and aging at constant temperature for 1-2 hours, then stop heating, filter, wash the precipitate with deionized water at 80°C to 90°C, dry at 100°C, and calcinate at 380°C for 4 hours. Then add 1% graphite and 10% deionized water, mix w...

Embodiment 2

[0025] Example 2: Weigh Zn(NO 3 ) 2 ·6H 2 O40.49g, Al(NO 3 ) 3 9H 2 Add 10% deionized water to O108.66g to make 1000ml solution; weigh anhydrous Na 2 CO 3 66.83g was made into 1000ml solution. The two solutions are heated to 70-80°C for co-precipitation, the pH of the end point is controlled to be 7.0-7.5, and the aging time is 0.5-1h.

[0026] Weigh Zn(NO 3 ) 2 ·6H 2 O94.72g, Cu(NO 3 ) 2 ·3H 2 O2 26.5g, add deionized water to make 1500ml solution; weigh anhydrous Na 2 CO 3 139.78g was dubbed into 1500ml solution. Heat the two solutions to 80-90°C and co-precipitate into the above mixed solution, control the end point pH to 6.5-7.0, add 20g of active γ-Al after aging for 0.5-1h 2 o 3 , continue heating and aging at constant temperature for 1-2 hours, stop heating, filter, wash the precipitate with deionized water at 80-90°C, dry at 100°C, and calcinate at 380°C for 4 hours. Then add 1% graphite and 10% deionized water, mix well, and press into tablets.

Embodiment 3

[0027] Example 3: Weigh Zn(NO 3 ) 2 ·6H 2 O37.74g, Al(NO 3 ) 3 9H 2 O90.55g, Mn(NO 3 ) 2 (50%) 40.0g, add 10% deionized water to make 1000ml solution; weigh anhydrous Na 2 CO 3 80.7g was dubbed into 1000ml solution. Heat the two solutions to 70-80°C for co-precipitation, control pH = 7.0-7.5 as the end point, and age for 0.5-1h.

[0028] Weigh Zn(NO 3 ) 2 ·6H 2 O78.93g, Cu(NO 3 ) 2 ·3H 2 O2 26.5g, add deionized water to make 1500ml solution; weigh anhydrous Na 2 CO 3135.07g was dubbed into 1500ml solution. Heat the two solutions to 80-90°C and co-precipitate into the above mixed solution, control the end point pH to 6.5-7.0, add 30g of coconut shell activated carbon after aging for 0.5-1h, continue heating and aging at constant temperature for 1-2h, then stop heating. Filter, wash the precipitate with deionized water at 80-90°C, dry at 100°C, and calcinate at 380°C for 4 hours. Then add 1% graphite and 10% deionized water, mix well, and press into tablets....

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PUM

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Abstract

The invention relates to a copper series purifying agent and a preparation method thereof. The purifying agent is a carrier system, is loaded with Cu and also loaded with one or more metals, such as Zn, Al, Mg, Zr and Mn or metal oxides thereof; and the prepared purifying agent can effectively eliminate Fe(CO)5 and Ni(CO)4 in a synthesis gas and plays a role of removing O2. The preparation methodcomprises the following steps of: mixing, cocurrent flow coprecipitation, ageing, carrier loading, drying, tableting and forming and the like. The purifying gent prepared by the preparation method issuitable for the synthesis gas containing CO, CO2 and H2 and is especially suitable for a device for synthesizing methanol by using the synthesis gas.

Description

technical field [0001] The invention relates to the field of purifying agents, in particular to a copper-based purifying agent and a preparation method thereof. [0002] Background technique [0003] Synthesis gas is the raw material gas for the synthesis of a series of C1 chemicals such as methanol, dimethyl ether, and olefins. The catalyst used in the synthesis reaction is sensitive to impurities, especially As, S, Fe, Ni, Cl and O 2 A small amount of impurities will cause the activity of the catalyst to decrease or lose its activity, and the service life of the catalyst will be significantly shortened. Therefore, deep purification of synthesis gas has become a key technology in the chemical synthesis process. [0004] For Fe and Ni elements, they generally appear as Fe(CO) in syngas 5 and Ni(CO) 4 form exists. These carbonyl compounds decompose on the catalyst and deposit on the surface to block the active sites of the catalyst or provide undesired catalytic activity...

Claims

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Application Information

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IPC IPC(8): C01B3/56
Inventor 艾珍王莉吴砚会邱传珪
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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