Arsenic removal agent, and preparation method and use thereof

A technology for removing arsenic and carrier, which is applied in refining with metal oxides, treating hydrocarbon oil, petroleum industry, etc. It can solve the problems of unfavorable selective arsenic removal reaction, low MoO3 content, high reaction temperature, etc., and achieve good arsenic removal effect, The effect of stable arsenic removal effect and simple preparation method

Active Publication Date: 2019-01-22
昆山市精细化工研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the arsenic removal agent of this invention is a Mo-Ni-P system, the content of MoO3 is relatively low, and the reaction temperature is relatively high, preferably at 260-340°C, which is not conducive to the selective arsenic removal reaction

Method used

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  • Arsenic removal agent, and preparation method and use thereof
  • Arsenic removal agent, and preparation method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The arsenic removal agent of this embodiment includes a carrier and an active component loaded on the carrier, the carrier is a mixture of activated carbon and alumina, the mass ratio of activated carbon to alumina is 3:1, and the specific surface area of ​​alumina is 100m 2 / g, the active component is the active component of the Ni-Cu-Mo-Co system, wherein, taking the mass of the carrier as 100%, the mass percentage of Ni is 10%, the mass percentage of Cu is 5%, and the mass percentage of Mo is 5%, and the mass percentage of Co is 2%.

[0047] The preparation method of the arsenic removal agent of the present embodiment comprises the following steps:

[0048] 1) At 40°C, use a strong oxidizing acid solution to impregnate the carrier for 1 hour, immerse the acid-treated carrier in an aqueous solution of soluble nickel salt, filter the filtrate, dry at 100°C for 3 hours, and roast at 600°C 1.5h, obtain the carrier that is loaded with Ni;

[0049] 2) immersing the Ni-lo...

Embodiment 2

[0053] The arsenic removal agent of this embodiment includes a carrier and an active component loaded on the carrier, the carrier is a mixture of activated carbon and alumina, the mass ratio of activated carbon to alumina is 1:1, and the specific surface area of ​​alumina is 200m 2 / g, the active component is the active component of the Ni-Cu-Mo-Co system, wherein, taking the mass of the carrier as 100%, the mass percentage of Ni is 15%, the mass percentage of Cu is 8%, and the mass percentage of Mo is 3%, and the mass percentage of Co is 3%.

[0054] The preparation method of the arsenic removal agent of the present embodiment comprises the following steps:

[0055] 1) At 40°C, impregnate the carrier with a strong oxidizing acid solution for 1 hour, immerse the acid-treated carrier in an aqueous solution of soluble nickel salt, filter off the filtrate, dry at 100°C for 5 hours, and roast at 400°C 5h, obtain the carrier that is loaded with Ni;

[0056] 2) immersing the Ni-lo...

Embodiment 3

[0060] The arsenic removal agent of this embodiment includes a carrier and an active component loaded on the carrier, the carrier is a mixture of activated carbon and alumina, the mass ratio of activated carbon to alumina is 5:1, and the specific surface area of ​​alumina is 400m 2 / g, the active component is the Ni-Cu-Mo-Co system active component, wherein, based on the mass of the carrier as 100%, the mass percentage of Ni is 20%, the mass percentage of Cu is 6%, and the mass percentage of Mo is 2%, and the mass percentage of Co is 2%.

[0061] The preparation method of the arsenic removal agent of the present embodiment comprises the following steps:

[0062] 1) At 20°C, impregnate the carrier with a strong oxidizing acid solution for 2 hours, immerse the acid-treated carrier in an aqueous solution of soluble nickel salt, filter the filtrate, dry at 120°C for 3 hours, and roast at 400°C 4h, obtain the carrier that is loaded with Ni;

[0063] 2) immersing the Ni-loaded car...

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Abstract

The invention provides an arsenic removal agent, and a preparation method and a use thereof. The arsenic removal agent comprises a carrier and an active component loaded on the carrier, the carrier isa mixture of activated carbon and alumina, and the active component is a Ni-Cu-Mo-Co based active component; with the mass of the carrier as 100%, the mass percentage of Ni is 10-20%, the mass percentage of Cu is 5-10%, the mass percentage of Mo is 1-5%, and the mass percentage of Co is 1-3%. The preparation method of the arsenic removal agent is simple, and the impregnation and roasting processis simple; the prepared arsenic removal agent has high arsenic removal rate, high arsenic removal precision and long service life at room temperature when being used for arsenic removal from gasoline,and is of great significance for reducing atmospheric arsenic emission.

Description

technical field [0001] The invention belongs to the technical field of arsenic removal agent, and relates to an arsenic removal agent and its preparation method and application. Background technique [0002] With the increasing uncertainty of the supply and demand of oil resources and the change of energy structure, my country's foreign dependence on crude oil has also been adjusted. The composition of crude oil is becoming more and more complex, and the arsenic content in low-quality crude oil is increasing. For example, the arsenic content in Daqing naphtha is 130-300 ppb, the arsenic content in Daqing evertop oil is more than 1 ppm, and the arsenic content in naphtha produced in Xinjiang is 135 ppb or even close to 200 ppb. Trace amounts of arsenic in petroleum hydrocarbons, some exist in the form of organic arsenic compounds, and some exist in the form of arsine. The existence of arsenic will bring great harm to industrial production and the environment. A small amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/16
CPCC10G29/16C10G2300/205Y02P10/20
Inventor 张林生徐琦苗树运安全建
Owner 昆山市精细化工研究所有限公司
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