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A composite metal oxide desulfurization and dearsenic agent and its preparation method

A technology for desulfurization, arsenic removal, and composite metals, which is applied in the fields of refining metal oxides, chemical instruments and methods, and other chemical processes. It can solve problems such as high production costs, high energy consumption, and complicated preparation processes, and achieve low production costs. , low energy consumption and simple preparation process

Active Publication Date: 2021-10-26
HUBEI HUABANG CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a composite metal oxide desulfurization and arsenic removal agent and its preparation method, and solve the problems of complex preparation process, high energy consumption and high production cost of the existing desulfurization and arsenic removal agents in the prior art. technical problem

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  • A composite metal oxide desulfurization and dearsenic agent and its preparation method
  • A composite metal oxide desulfurization and dearsenic agent and its preparation method
  • A composite metal oxide desulfurization and dearsenic agent and its preparation method

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preparation example Construction

[0025] For the second solution of the present invention, the present invention proposes a kind of preparation method of composite metal oxide desulfurization and dearsenic agent, such as figure 1 , including the following steps:

[0026] S1: preparing the first metal composite oxide; S2: preparing the second metal oxide; S3: mixed molding; S4: roasting activation;

[0027] The method for preparing the composite metal oxide desulfurization and arsenic removal agent provided in the above second solution is used to prepare the composite metal oxide desulfurization and arsenic removal agent provided in the first solution of the present invention.

[0028] In the present invention, the reasons for separately preparing the first metal composite oxide and the second metal oxide are as follows:

[0029] (1) The precipitation environments of the first metal ion and the second metal ion are different, resulting in inconsistent precipitation sequences of the first metal ion and the seco...

Embodiment 1

[0043] This embodiment provides a composite metal oxide desulfurization and arsenic removal agent, obtained through the following steps:

[0044] S1: Weigh the calculated amounts of zinc nitrate, manganese sulfate, molybdenum acetate and cobalt chloride according to the ratio of the mass fraction of metal oxides in the desulfurization and arsenic removal agent being 20%, 5%, 8%, and 8%, and then add water to prepare The first metal mixed salt solution with a total salt mass concentration of 15%; followed by a urea solution with a mass fraction of 12% to precipitate the first metal, precipitation conditions: a water bath at 40°C, an alkali-salt molar ratio of 2:1, and a reaction time of 1.5 h;

[0045] S2: Take the copper nitrate solution and lead acetate according to the ratio of 35% and 8% of the metal oxide mass fraction in the desulfurization and arsenic removal agent, and then add water to prepare the second metal mixed salt with a total salt mass concentration of 12%. So...

Embodiment 2

[0049] This embodiment provides a composite metal oxide desulfurization and arsenic removal agent, obtained through the following steps:

[0050] S1: Weigh the calculated amount of zinc chloride, manganese nitrate, molybdenum nitrate and cobalt sulfate according to the ratio of the mass fraction of metal oxides in the desulfurization and arsenic removal agent being 25%, 5%, 5% and 5% respectively, and then add water to prepare The total salt mass concentration is the first metal mixed salt solution of 18%; then the first metal is precipitated by a sodium carbonate solution with a mass fraction of 12%, the precipitation condition: a water bath at 45°C, the alkali-salt molar ratio is 2:1, and the reaction time 1.5h;

[0051] S2: According to the mass fraction of metal oxides in the desulfurization and dearsenic agent being 32% and 10% respectively, take the calculated cupric chloride solution and lead nitrate, and then add water to prepare the second metal mixture with a total s...

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Abstract

The invention discloses a composite metal oxide desulfurization and arsenic removal agent and a preparation method thereof. The composite metal oxide desulfurization and arsenic removal agent is composed of the following raw materials in terms of mass percentage: 25% to 45% of the first metal composite oxide, 20%-48% of the second metal oxide, 1%-15% of the promoter and 5%-20% of the carrier; the above-mentioned first metal is at least two of zinc, manganese, molybdenum, and cobalt; the above-mentioned second metal is copper , one or more of lead. The composite metal oxide desulfurization and arsenic removal agent provided by the invention has excellent desulfurization ability, and also has the properties of high precision in arsenic and phosphorus removal, high arsenic capacity, developed pore structure, and stable properties; The preparation method of the arsenic agent has the advantages of simple preparation process, low energy consumption and low production cost.

Description

technical field [0001] The invention relates to the technical fields of environmental protection and petrochemical industry, in particular to a composite metal oxide desulfurization and arsenic removal agent and a preparation method thereof. Background technique [0002] As my country's energy industry gradually transforms from "fuel" to "chemical industry", the utilization rate of petroleum light hydrocarbon resources is getting higher and higher. Low-carbon hydrocarbons are an important raw material for petrochemicals. In the plastics industry, which has developed rapidly in recent years, it has promoted the integration and recovery of low-carbon hydrocarbon resources in major refineries. Low-carbon hydrocarbons come from dry gas recovery devices, gas fractionation devices, liquefied gas devices, and cracking devices. Heavy metals, sulfides, nitrides, salts, halogens and other impurities in crude oil migrate to downstream products during the refining process. Low-carbon h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/08C10G29/16
CPCC10G29/16C10G2300/202
Inventor 任家君邓国伟毛满意罗念常贺飞霍晓剑白雪琴常思乔武卫华熊丽霞黄艳刚
Owner HUBEI HUABANG CHEM
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