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Sulfur and mercury removing agent prepared by using nickel cobaltate as raw material and preparation method thereof

A technology for nickel cobalt oxide and raw materials, applied in separation methods, chemical instruments and methods, molecular sieve catalysts, etc., can solve the problems of long desulfurization and mercury removal cycle, damage to the metabolic function of biological cells, atmospheric environmental pollution, etc., and achieve desulfurization and mercury removal efficiency. The effect of reducing the environmental pollution rate and improving the removal efficiency

Inactive Publication Date: 2017-04-26
YINYU MINERALS WUCHUAN AUTONOMOUS COUNTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coal is the main energy resource in our country; coal combustion is accompanied by the emission of waste gas, and coal contains a large amount of sulfide and mercury, mercury is highly toxic and easy to volatilize, in the process of coal combustion, accompanied by flue gas Volatilizes into the environment, causing air pollution; not only that, mercury will also have a serious impact on organisms, especially destroying the metabolic function of biological cells; sulfide will enter in the form of sulfur dioxide gas during coal combustion In the environment, there is a large amount of sulfur dioxide in the air. As the rain falls, sulfur dioxide, oxygen and water form acid rain and fall to the surface, causing damage to surface crops, vegetation, industrial factories and mines, etc., which has brought great damage to production and life. Therefore, it is necessary to desulfurize and demercurize the flue gas emitted from coal combustion
[0003] At present, there are many treatment technologies for flue gas desulfurization and mercury removal, but most of them use separate desulfurization or demercury treatment agents for stepwise desulfurization and mercury removal, which not only results in a longer desulfurization and mercury removal cycle, but also desulfurization and mercury removal costs. Based on this, a treatment method that simultaneously desulfurizes and demercures appears in the prior art, and the selection of raw materials for desulfurization and demercury reduces the cost of desulfurization and demercury. For example, the patent application number is 201610149557, using low Grade pyrolusite is used as a raw material, so that during the contact reaction process with the flue gas, the removal of sulfur dioxide and mercury in the flue gas can be achieved, the content of sulfur dioxide, mercury, etc. in the flue gas emission process can be reduced, and the cost can be reduced; however, this treatment method It can only increase the removal rate of sulfur dioxide to about 70%, and the removal rate of mercury to about 64%, so that the flue gas still contains a large amount of sulfide and mercury components. After being discharged into the environment, serious Beyond the self-purification ability of the environment, it will still cause a great degree of pollution to the environment

Method used

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  • Sulfur and mercury removing agent prepared by using nickel cobaltate as raw material and preparation method thereof

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preparation example Construction

[0030] In some embodiments, the preparation method of a desulfurization and mercury removal agent prepared from nickel cobaltate comprises the following steps:

[0031] (1) After nickel cobaltate, ferric manganate and potassium chromate are prepared into 40-70 mesh powders respectively, mix them uniformly to obtain mixed powders;

[0032] (2) Add water to the mixed powder to prepare a slurry, and immerse the carrier in the slurry for 10-20 minutes, filter it, and prepare the filter cake into a spherical shape, using a temperature of 100-120°C and a vacuum of 0.02 -0.08MPa treatment for 8-10min, that is.

[0033] In some embodiments, the step further includes mixing the filter cake with pyrolusite powder, kneading it into a slurry, and then preparing it into a spherical shape.

Embodiment 1

[0035] The desulfurization and mercury removal agent prepared from nickel cobaltate is composed of active components and carriers. The raw material components of the active components are 1 kg of nickel cobaltate, 3 kg of ferric manganate, and 1 kg of potassium chromate; the active components account for the mass of the desulfurization and mercury removal agent 15%. The carrier is aluminum oxide, and the aluminum oxide is γ-Al 2 o 3 .

[0036] The preparation method comprises the following steps:

[0037] (1) After nickel cobaltate, ferric manganate and potassium chromate are prepared into 40 mesh powders respectively, mix them uniformly to obtain mixed powders;

[0038] (2) Add water to the mixed powder to prepare a slurry, and immerse the carrier in the slurry for 10 minutes, filter it, prepare the filter cake into a spherical shape, and treat it at a temperature of 100 °C and a vacuum of 0.02 MPa for 8 minutes. Instantly.

Embodiment 2

[0040] The desulfurization and mercury removal agent prepared from nickel cobaltate is composed of active components and carriers. The raw materials of the active components are 3kg of nickel cobaltate, 7kg of ferric manganate and 7kg of potassium chromate by weight; the active components account for the mass of desulfurization and mercury removal agent 47% of. The carrier is silica.

[0041] The preparation method comprises the following steps:

[0042] (1) After nickel cobaltate, ferric manganate and potassium chromate are prepared into 70 mesh powders respectively, mix them uniformly to obtain mixed powders;

[0043] (2) Add water to the mixed powder to prepare a slurry, and immerse the carrier in the slurry for 20 minutes, filter it, prepare the filter cake into a spherical shape, and treat it at a temperature of 120 °C and a vacuum of 0.08 MPa for 10 minutes. Instantly.

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Abstract

The invention relates to the technical field of sulfur and mercury removal, specifically to a sulfur and mercury removing agent prepared by using nickel cobaltate as a raw material and a preparation method thereof. According to the invention, the sulfur and mercury removing agent is prepared by using nickel cobaltate, iron manganate and potassium chromate, or nickel cobaltate, iron manganate, potassium chromate and pyrolusite powder as raw materials, so the sulfur and mercury removing efficiency is excellent; the removing rate of sulfur and mercury in waste gas containing sulfur and mercury reaches 98% or above; meanwhile, the selected raw materials are easily available, so the cost of the sulfur and mercury removing agent is low.

Description

technical field [0001] The invention relates to the technical field of desulfurization and mercury removal, in particular to a desulfurization and mercury removal agent prepared from nickel cobaltate as a raw material and a preparation method thereof. Background technique [0002] Coal is the main energy resource in our country; coal combustion is accompanied by the emission of waste gas, and coal contains a large amount of sulfide and mercury, mercury is highly toxic and easy to volatilize, in the process of coal combustion, accompanied by flue gas Volatilizes into the environment, causing air pollution; not only that, mercury will also have a serious impact on organisms, especially destroying the metabolic function of biological cells; sulfide will enter in the form of sulfur dioxide gas during coal combustion In the environment, there is a large amount of sulfur dioxide in the air. As the rain falls, sulfur dioxide, oxygen and water form acid rain and fall to the surface,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J29/78B01D53/86B01D53/50B01D53/64B01J20/04B01J20/08B01J20/10B01J20/18
Inventor 李军旗鲁圣军黎志英刘利黄碧芳金会心陈庆唐道文赵平原王丽远陈肖虎
Owner YINYU MINERALS WUCHUAN AUTONOMOUS COUNTY