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A kind of loaded arsenic removal agent and preparation method thereof

A load-type, arsenic removal technology, applied in the field of coal chemical industry, can solve the problems of small adsorption capacity, poor performance stability, and low arsenic removal rate of the arsenic remover, and achieves increased Lewis acid position and strength, good crystallinity, and production technology. simple effect

Active Publication Date: 2018-09-18
FUZHOU UNIV ASSET MANAGEMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the present invention aims to solve the problems of small adsorption capacity, low arsenic removal rate and poor performance stability of the arsenic removal agent in the prior art, so as to provide a Highly loaded arsenic removal agent and preparation method thereof

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  • A kind of loaded arsenic removal agent and preparation method thereof
  • A kind of loaded arsenic removal agent and preparation method thereof

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Embodiment 1

[0033] This embodiment provides a loaded arsenic removal agent, which includes a carrier and an active component loaded on the carrier; the carrier is porous amorphous magnesium-aluminum spinel, and the active component is CuO; the specific surface area of ​​the magnesium-aluminum spinel is 172.5m 2 / g.

[0034] Preferably, calculated by the weight of CuO, the active component accounts for 15wt% of the carrier.

[0035] The preparation method of loaded type arsenic removal agent comprises the following steps:

[0036] S1. Knead the magnesium source and the aluminum source with the acidic aqueous solution, and the molar ratio of the aluminum source and the magnesium source is MgO / Al 2 o 3 The calculation is 1:2, the acidic aqueous solution is nitric acid aqueous solution, the concentration is 2mol / L;

[0037] In this embodiment, the aluminum source is Al 2 o 3 ·H 2 O, the source of magnesium is light MgO.

[0038] S2. Add 0.5wt% of the total amount of the mixture to the...

Embodiment 2

[0044] This embodiment provides a loaded arsenic removal agent, which includes a carrier and an active component loaded on the carrier; the carrier is porous amorphous magnesium-aluminum spinel, and the active component is CuO; the specific surface area of ​​the magnesium-aluminum spinel is 158.7m 2 / g.

[0045] Preferably, calculated by the weight of CuO, the active component accounts for 15wt% of the carrier.

[0046] The preparation method of loaded type arsenic removal agent comprises the following steps:

[0047] S1. Knead the magnesium source and the aluminum source with the acidic aqueous solution, and the molar ratio of the aluminum source and the magnesium source is MgO / Al 2 o 3 The calculation is 1:2, the acidic aqueous solution is nitric acid aqueous solution, the concentration is 2mol / L;

[0048] In this embodiment, the aluminum source is Al 2 o 3 ·H 2 O, the source of magnesium is light MgO.

[0049] S2. Add 0.5wt% of the total amount of the mixture to the...

Embodiment 3

[0055] This embodiment provides a loaded arsenic removal agent, which includes a carrier and an active component loaded on the carrier; the carrier is porous amorphous magnesium-aluminum spinel, and the active component is CuO; the specific surface area of ​​the magnesium-aluminum spinel is 170.4m 2 / g.

[0056] Preferably, calculated by the weight of CuO, the active component accounts for 15wt% of the carrier.

[0057] The preparation method of loaded type arsenic removal agent comprises the following steps:

[0058] S1. Knead the magnesium source and the aluminum source with the acidic aqueous solution, and the molar ratio of the aluminum source and the magnesium source is MgO / Al 2 o 3 The calculation is 1:2, the acidic aqueous solution is nitric acid aqueous solution, the concentration is 2mol / L;

[0059] In this embodiment, the aluminum source is Al 2 o 3 ·H 2 O, the source of magnesium is light MgO.

[0060] S2. Add 0.5wt% of the total amount of the mixture to the...

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Abstract

The supported arsenic removal agent of the present invention includes a carrier and an active component loaded on the carrier; the carrier is porous amorphous magnesium aluminum spinel, and the active component is CuO and / or NiO. Since the carrier is porous amorphous magnesium-aluminum spinel with good crystallinity, the material is internally bound by strong Mg- and Al-O ionic bonds, which fundamentally effectively improves the strength and hydration resistance of the material. The preparation method of the load-type arsenic removal agent of the present invention has simple production process and low production cost.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a loaded arsenic removal agent and a preparation method thereof. Background technique [0002] Coal is an important resource in my country, and coal-to-synthesis gas technology is one of the main ways to utilize coal resources. Raw coal contains arsenic compounds, and the crude gas produced mainly contains AsH 3 However, many catalysts used in the coal industry, such as high-temperature shift catalysts, are very sensitive to arsenic compounds. Hundreds of ppb (parts per billion) arsenic compounds can cause catalyst poisoning and deactivation, affecting the normal operation of the device. Therefore, in chemical synthesis, the purification of coal-to-synthesis gas is a key technology to be solved, and the research and development of arsenic removal agent has important practical significance and application value. [0003] At present, there are two main methods for removing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/30C02F1/28C02F101/20
CPCB01J20/04B01J20/06C02F1/281C02F2101/103C02F2101/20
Inventor 江莉龙曹彦宁沈丽娟赵素云冯续
Owner FUZHOU UNIV ASSET MANAGEMENT CO LTD
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