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Liquid condition petroleum hydrocarbon arsenic removal catalyst, producing method and use of the same

A technology of liquid petroleum and arsenic removal agent, applied in the direction of refining with metal salts, etc., can solve problems such as blank, and achieve the effects of high arsenic capacity, improved transmission performance, and good water resistance.

Inactive Publication Date: 2008-05-07
上海化工研究院天地科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] According to the above, it can be seen that the research on the double mesoporous-microporous molecular sieve-based liquid petroleum hydrocarbon room temperature arsenic removal material or arsenic removal agent is still blank.

Method used

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preparation example Construction

[0046] The present invention also provides a preparation method for the arsenic removal agent, which comprises compounding the arsenic removal active component on a double mesopore-microporous molecular sieve, and then mixing the molecular sieve compounded with the active component and the structure forming auxiliary material by a conventional method and forming, and finally heat-treating the formed green body to form the arsenic-removing agent.

[0047] In a preferred example, the preparation method comprises the steps of:

[0048] (i) compounding the double mesoporous-microporous molecular sieve with the active component precursor, wherein said double mesoporous-microporous molecular sieve has micropores below 2nm and an average small pore diameter of 2-20nm, With an average macropore diameter of 6-50nm, the macropore volume is not less than 10% of the total pore volume, and the total pore volume is 0.8-1.9cm 3 / g, specific surface area 300-1200m 2 / g;

[0049] (ii) addin...

Embodiment 1

[0052] Preparation of double mesoporous-microporous molecular sieves:

[0053] 8.6 grams of Triton X-114 (purchased from Amresco) were dissolved in 200 mL of aqueous hydrochloric acid at pH=1.5, and 16 mL of water glass (27% SiO 2 , 14% NaOH) was dissolved in 200 mL of water and added to the above solution under stirring. And stirred at 40°C for 20h to obtain a white cloudy liquid, this mixture was added into a polytetrafluoroethylene-lined crystallization kettle and crystallized at 80°C for 48 hours. The obtained solid matter was filtered with a glass sand core funnel and washed until there was no chloride ion in the filtrate. After heat treatment at 550° C. for 4 hours, a white powder of double mesopore-micropore molecular sieves was obtained with a yield of 87%. The average micropore aperture of gained double mesopore-micropore molecular sieve material is 0.7nm, and the average aperture of small hole is 2.4nm, and macropore aperture is 9-21nm, and macropore pore volume acc...

Embodiment 2

[0059] Tetraethyl orthosilicate, cetyltrimethylammonium bromide, water and ammonia water were mixed and stirred at room temperature for 20 h at a molar ratio of 1:0.2:160:1.5 to obtain a white cloudy liquid, which was added to the Crystallization was carried out at 80°C for 48 hours in a polytetrafluoroethylene-lined crystallization kettle. The resulting solid material was filtered through a fritted glass funnel and washed until neutral. The above-washed substance was added to an alkaline aqueous solution (pH=10) containing 5% S123, (purchased from Aldrich Company, average molecular weight of ethylene oxide-propylene oxide copolymer: 4000). Heat and stir in a water bath at 40°C for 10 h to obtain a white turbid liquid. This mixture was added to a polytetrafluoroethylene-lined crystallization kettle and crystallized at 100°C for 24 hours. The obtained solid matter was filtered with a glass sand core funnel and washed until neutral, and after heat treatment at 550° C. for 4 hou...

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Abstract

The invention relates to a normal temperature de-arsenic agent for liquid petroleum hydrocarbons, and the preparation method and the usage of the de-arsenic agent. The de-arsenic agent comprises the following components: 55 to 59 weight account of molecular sieve comprising active arsenic removing component and provided with double middle pore-micropore structure, and 1 to 50 weight account of auxiliary materials for frame forming; the molecular sieve and the auxiliary materials for frame forming react under certain conditions to produce the de-arsenic agent; the de-arsenic agent is used for the normal temperature arsenic removal of liquid petroleum hydrocarbons. Compared with the prior art, the invention has the advantages of high arsenic capacity, good waterproof property, good arsenic removing performance and other advantages.

Description

technical field [0001] The invention relates to an additive for petroleum processing and separation, in particular to a normal-temperature dearsenic agent for liquid petroleum hydrocarbons. Background technique [0002] It is well known that arsenic compounds in petroleum hydrocarbons, especially liquid petroleum hydrocarbons, have obvious negative effects on their subsequent processing. The most prominent problem is the poisoning caused by the catalyst. Arsenic compounds are also easy to deposit on the surface of pipelines, corrode pipelines, and cause hidden dangers. In severe cases, arsenic will prevent certain processes from proceeding smoothly. Such arsenic will seriously affect the quality and economic benefits of the product. Therefore, the content of arsenic compounds in petroleum hydrocarbons must be controlled within certain standards. For example, the arsenic content of naphtha products should be less than 20 ng / g. In order to remove arsenic from petroleum hy...

Claims

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Application Information

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IPC IPC(8): C10G29/06
Inventor 曹育才张长远
Owner 上海化工研究院天地科技发展有限公司
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