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Synthetic gas desulfurizing agent as well as preparation method and application thereof

A desulfurization agent and synthetic gas technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of low desulfurization accuracy, increase the difficulty of production control, increase investment costs and operating costs, and achieve good structural stability Effect

Active Publication Date: 2020-09-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of wet desulfurization is that it is generally used in normal temperature and low temperature desulfurization process. For high-temperature syngas, the operating energy consumption is too high, and there are also shortcomings such as low desulfurization accuracy.
However, due to the installation of the syngas hydrogenation process, the investment cost and operating cost are correspondingly increased, and the difficulty of production control is also increased.

Method used

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  • Synthetic gas desulfurizing agent as well as preparation method and application thereof
  • Synthetic gas desulfurizing agent as well as preparation method and application thereof
  • Synthetic gas desulfurizing agent as well as preparation method and application thereof

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preparation example Construction

[0052] In a second aspect, an embodiment of the present invention provides a method for preparing the above-mentioned syngas desulfurizer, comprising the following steps: forming and roasting a slurry containing precursors of each component to obtain a syngas desulfurizer.

[0053] The concrete steps of the preparation of above-mentioned syngas desulfurizer are as follows:

[0054] Add a certain amount of deionized water to the alumina sol or silica sol, then slowly add pseudo-boehmite and / or hydrated titanium dioxide powder and stir for 6-10 hours to obtain a slurry, and continue to add metered phosphoric acid and / or ammonium phosphate and / or and / or ammonium hydrogen phosphate and / or ammonium dihydrogen phosphate and / or boric acid, copper oxide and / or gallium nitrate and / or chloride, nano basic zinc carbonate and / or nano oxide Zinc and / or zinc nitrate and / or zinc chloride, etc., the whole slurry is stirred and homogenized for 6-10 hours, and the solid content of the slurry i...

Embodiment 1

[0067] Get aluminum sol 1058g (Al 2 o 3 Content 21%), slowly add ammonium dihydrogen phosphate 27g, copper nitrate 94g, basic zinc carbonate 1500g, then stir for 5.0 hours. Under the conditions of furnace temperature 400°C, outlet temperature 200°C, and spray pressure 4.0MPa, it is spray-dried and shaped. The molded syngas desulfurizer was dried at 150°C for 5.0 hours and calcined at 600°C for 5.0 hours to obtain the syngas desulfurizer E01.

[0068] Dissolve 190g of nickel nitrate and 207g of cobalt nitrate in 600ml of water, soak the synthesis gas desulfurization agent E01 at 50°C for 6 hours, then dry at 110°C for 4 hours, and finally roast at 500°C for 5 hours to obtain the synthesis gas desulfurization Agent E001.

[0069] Syngas desulfurizer E001 is used at normal pressure, temperature 400°C, space velocity 2000h －1 Under certain conditions, the finished synthesis gas desulfurizer E1 can be obtained by reducing it with hydrogen for 60 minutes.

Embodiment 2

[0071] Get aluminum sol 1184g (Al 2 o 3 Content 21%), slowly add 27g of ammonium dihydrogen phosphate, 80g of copper nitrate, 1500g of basic zinc carbonate, and then stir for 5.0 hours. Under the conditions of furnace temperature 400°C, outlet temperature 200°C, and spray pressure 4.0MPa, it is spray-dried and shaped. The shaped adsorbent was dried at 150°C for 5.0 hours and calcined at 600°C for 5.0 hours to obtain the synthesis gas desulfurizer E02.

[0072] Dissolve 138g of nickel nitrate, 41g of ammonium paramolybdate, and 132g of cobalt nitrate in 600ml of water, use this solution to soak the synthesis gas desulfurizer E02 at 50°C for 6 hours, then dry at 110°C for 4 hours, and finally roast at 500°C for 5 hours. hours to get the synthesis gas desulfurizer E002.

[0073] Syngas desulfurizer E002 is used at normal pressure, temperature 400°C, and space velocity 2000h －1 Under certain conditions, the finished synthesis gas desulfurizer E2 can be obtained by reducing it ...

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Abstract

The invention discloses a synthetic gas desulfurizing agent as well as a preparation method and application thereof. The synthesis gas desulfurizing agent is prepared by modifying a conventional zincoxide desulfurizing agent through a metal oxide and a non-metal oxide. The prepared desulfurizing agent has very good structural stability, and still has high sulfide removal capacity under the conditions of high water vapor partial pressure and high-temperature oxidation. The synthetic gas desulfurizing agent is a renewable solid desulfurizer for removing hydrogen sulfide and organic sulfur fromsynthetic gas, is suitable for a fluidized bed high-temperature desulfurization process, can remove hydrogen sulfide and organic sulfur from the synthetic gas, and can save energy and reduce consumption.

Description

technical field [0001] The invention relates to the technical field of syngas desulfurizers, in particular to a synthesis gas desulfurizer and its preparation method and application. Background technique [0002] Coal gasification to synthesis gas (including fuel gas) is the basis of new coal chemical industry. Traditionally, it is mainly used to synthesize ammonia. At present, it is mainly used to produce methanol, ethylene glycol, natural gas and some special oil products. It is also used in some fine chemicals. Synthesis of products. [0003] Sulfur-containing compounds in syngas will not only cause corrosion of production equipment and pipelines and affect production safety, but more seriously, cause poisoning and deactivation of catalysts in subsequent chemical reactions, directly affecting the yield and quality of final products. Removing sulfur-containing compounds in syngas can not only improve safety production and ensure subsequent reaction efficiency, but also re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48B01D53/52B01D53/83C10K1/00C10K1/30
CPCB01D53/48B01D53/52B01D53/83C10K1/004C10K1/30B01D2251/602B01D2257/306B01D2257/308
Inventor 郝代军亢万忠李欣任潇航赵国忠沈方峡俞安平吴奇妙李治刘丹禾刘林娇李静静魏小波董晓伟
Owner CHINA PETROLEUM & CHEM CORP
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