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Anti sulfur deoxidizing catalyst, its preparing process and application method

A sulfur-resistant deoxidation catalyst, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of poor poisoning ability, short life, low activity, etc., and achieve strong sulfur poisoning resistance. performance effect

Active Publication Date: 2005-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the hydrogen deoxygenation catalysts in the prior art have disadvantages such as poor resistance to poisoning by impurities such as sulfide and CO, low activity, and short life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0025] Weigh 0.21 g of sponge Pt, dissolve in aqua regia, and dilute to 150 ml of chloroplatinic acid aqueous solution. Add 1.6 grams of sulfur content of 8% (wt) (NH 4 ) 2 S aqueous solution with NH 3 Use water or dilute HCl to adjust the pH between 7 and 8 to prepare an impregnating solution. Weigh 260 grams of Ф5 spherical γ-Al 2 o 3 Put the carrier into the impregnating solution, shake the beaker until all the impregnating solution is loaded on the alumina carrier. Dry at 120°C for 3 hours. Divide it into eight parts, and bake at 150°C, 200°C, 250°C, 300°C, 350°C, 450°C under air atmosphere, 300°C, 350°C under nitrogen atmosphere for 3 hours respectively. The Pt content of the prepared catalyst was 0.08% (wt), and the S / Pt molar ratio was 1.74. The performance of the obtained catalyst was evaluated in 180°C, 2MPa synthesis gas, and the results are shown in Table 1.

[0026] Example

Embodiment 9～13

[0028] Take by weighing 0.133 gram of sponge Pt, dissolve with aqua regia, be diluted into 100ml chloroplatinic acid aqueous solution, be divided into every part of 20ml, totally five parts of dipping liquid, add respectively 0.04, 0.20, 0.28, 0.56, 1.12 gram of sulfur content 8% (wt ) of (NH 4 ) 2 S aqueous solution. use NH 3 Adjust the pH between 7 and 8 with water or dilute HCl. Add 33 grams of Ф3 gear-shaped r-Al to each dipping solution 2 o 3 carrier, shake the beaker until all the impregnating solution is covered with Al 2 o 3 absorb. Dry at 120°C for 3 hours, and bake at 300°C for 4 hours in an air atmosphere to obtain the catalyst of the present invention. At 180℃, 2MPa, space velocity 3000hr -1 The deoxidation performance of the catalyst was evaluated in the synthetic gas, and the results are shown in Table 2.

[0029] Example

Embodiment 14～16

[0031] Prepare three batches of catalysts according to the method of Example 4, select Ф3 spherical r-Al 2 o 3 As a carrier, the same amount of sulfur-containing 8% (wt) (NH 4 ) 2 S aqueous solution 0.20 gram, the content of control catalyst metal Pt is 0.04% (wt), 0.08% (wt) and 0.12% (wt), the S / Pt molar ratio of the catalyst of preparation is respectively 3.48, 1.74 and 0.87, at 180 ℃ , 2MPa syngas for deoxidation performance evaluation, the results are shown in Table 3.

[0032] Example

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PUM

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Abstract

The invention unfurls a kind of off O catalyst and its producing way and application. The catalyst of the invention is made of carry and the active parts on carry PtS, rate by carry weight: Pt: 0.01--0.5%(wt), S / Pt mol rate: 0.1--50, the carry is chosen in three oxide two aluminum, numerator sieve, two oxide silicon and active carbon. The invention apply the catalyst in taking off O to COS of 1--500ppm, O of 0.5 %( vacuum) of having hydrogen. Temperature is 25-450 degC, press is 1--15MPa. The catalyst of the invention has the strong ability to offence S poison, very well to be used in taking off O in the air including S.

Description

technical field [0001] The invention relates to a deoxidation catalyst, in particular to a catalyst for removing trace oxygen in various gases (especially sulfur-containing gases), its preparation method and application. Background technique [0002] As we all know, because the air contains a lot of oxygen, most gases will inevitably introduce trace oxygen impurities in the production process, such as hydrogen production by electrolysis of water, air pressure swing adsorption or cryogenic nitrogen production, and partial oxidation of heavy oil to synthesis gas (CO and H 2 mixed gas) and other production processes. In syngas, CO, CO 2 In many gases such as , alkanes, natural gas, olefins, etc., in addition to trace oxygen impurities, there are also trace amounts of hydrogen sulfide (H 2 S), carbonyl sulfide (COS) and other sulfur impurities. In general, the presence of trace amounts of oxygen and sulfur in the gas will deactivate the main catalyst in the subsequent synthes...

Claims

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Application Information

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IPC IPC(8): B01J27/045
Inventor 吕顺丰周维先吴秀香秦燕璜周智泉
Owner CHINA PETROLEUM & CHEM CORP
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