Preparation method of supported dearsenic agent and dearsenic agent prepared by same

A supported, arsenic removal technology, applied in chemical instruments and methods, refined hydrocarbon oil, physical/chemical process catalysts, etc., can solve the problems of low arsenic removal rate, low production capacity and low production energy consumption of arsenic removers , to achieve the effect of reducing energy consumption, excellent effect and simplifying the production process

Inactive Publication Date: 2009-12-02
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the disadvantages of low arsenic removal rate, high energy consumption and low production capacity in the preparation process of the arsenic removal agent in the prior art, and provide a high arsenic removal rate and low production energy consumption. , a preparation method of a load-type arsenic removal agent suitable for large-scale industrial production, and a load-type arsenic removal agent obtained by the preparation method

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  • Preparation method of supported dearsenic agent and dearsenic agent prepared by same

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preparation example Construction

[0019] The preparation method of the arsenic removal agent of the present invention can be divided into three steps: a step of preparing a solution, a step of loading an active component, and a drying step. These three steps are illustrated and described respectively below.

[0020] Preparation of solution steps

[0021] Dissolve one or more of copper sulfate, copper nitrate and copper nitrite and / or one or more of zinc sulfate, zinc nitrate and zinc nitrite in water to prepare an aqueous solution with a concentration of 5% to the saturation concentration of the solute in the solution at normal temperature and pressure.

[0022] Loading active ingredient step

[0023] The prepared solution containing the active metal salt is loaded on the carrier by impregnation or spraying. In the present invention, it is preferred to load the soluble copper salt and / or zinc salt on the carrier by equal-volume spray-dipping or equal-volume impregnation, mainly to avoid waste of active c...

Embodiment 1

[0027] Example 1 Preparation of modified arsenic removal agent C1

[0028] Prepare a solution of copper nitrite and copper sulfate with a concentration of 15%. Then the equal volume of the prepared solution was sprayed and impregnated onto the spherical carrier of 200g alumina. After drying at 200°C for 3 hours, the finished arsenic removal agent C1 was obtained, wherein the total content of copper nitrite and copper sulfate in C1 was 12.9 wt%. Its arsenic removal performance is shown in Table 1.

Embodiment 2

[0029] Example 2 Preparation of modified arsenic removal agent C2

[0030] Prepare a mixed solution of copper sulfate and zinc sulfate with a concentration of 13%. Then, 200 g of activated carbon and silica mixture spherical carrier were immersed in the prepared mixed solution. After drying at 50°C for 20 hours, the finished arsenic removal agent C2 was obtained, wherein the total content of copper sulfate and zinc sulfate in C2 was 12wt%. Its arsenic removal performance is shown in Table 1.

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Abstract

The invention relates to a preparation method of supported dearsenic agent, comprising the following steps: a)) preparing water solution with soluble cupric salt and/or soluble zinc salt; b)) loading the soluble cupric salt and/or soluble zinc salt on a carrier to obtain the carrier loading active metal; c)) drying the carrier loading active metal at 50-200 DEG C for 3-20h to obtain the finished dearsenic agent. The dearsenic agent prepared by the method of the invention is composed of active constituent and carrier, the active constituent comprises soluble cupric salt and/or soluble zinc salt, and the content of the active constituent in the dearsenic agent is more than 7wt% and less than 13wt%. The dearsenic agent of the invention has the advantages of high dearsenic rate, low energy consumption and suitability for large-scale industrialized production.

Description

technical field [0001] The invention belongs to the field of arsenic removal catalysts, in particular to an arsenic removal agent for high-precision removal of arsenic compounds in various liquid oil products and a preparation method thereof. Background technique [0002] In recent years, with the continuous exploitation of crude oil, the content of arsenic in oil has been increasing year by year. Products obtained from the secondary processing of high-arsenic oils, such as the polymerization of propylene, ethylene and other materials or their deep processing, the arsine in the materials will cause the poisoning of the catalyst used, which requires high-precision arsenic removal of the materials , so the research on arsenic removal agents has received extensive attention. [0003] Chinese patent CN118540C discloses a method for removing arsenic from hydrocarbon oil and an arsenic removal agent suitable for the method. The arsenic removal agent consists of an active componen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J27/055B01J27/25C10G27/00
Inventor 刘玉珍李景斌
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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