Flue gas adsorption desulfurizer and preparation method thereof

An adsorption desulfurization and flue gas technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problems of high investment costs, complicated regeneration, and large water consumption for washing, and achieve increased Desulfurization capacity, high-efficiency adsorption, and large specific surface area

Inactive Publication Date: 2014-04-23
WUHU ZHONGLU IND
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  • Abstract
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Problems solved by technology

Another method is wet desulfurization, which mainly adopts spraying method, and uses alkaline aqueous solution to absorb sulfur dioxide in flue gas. Large area, high requirements for equipment anti-corrosion
Another method is the activated carbon adsorption method, which has a short service life of activated carbon, complicated regeneration, low desulfurization efficiency, large water consumption for washing, easy to cause secondary pollution, and high price of activated carbon, which increases the cost.
[000

Method used

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Example Embodiment

[0010] A flue gas adsorption desulfurizer, made from the following parts by weight (kg) of raw materials: charcoal 110, zinc chloride 11, magnesium chloride 33, calcium oxide 22, attapulgite 53, straw 22, expanded graphite 3.5, expanded perlite 33. Eclipta prostrata 33, raw astragalus 17, peanut shell 13, glycerin 2.5, polyoxyethylene stearate 2.5, additives 4.5, appropriate amount of water; the additives are made of the following parts by weight (kg) of raw materials :Montmorillonite powder 10, titanium dioxide 2, jade powder 12, zinc gluconate 1, magnesium oxide 3, flour 3, appropriate amount of water; its preparation method is to add flour to water, heat and stir into a paste, then add other ingredients to make The sludge is then sent to the calciner for calcination at 450-500°C for 4-5 hours, and after cooling, it is crushed into 100-150 mesh powder to obtain.

[0011] The preparation method of the flue gas adsorption desulfurizer includes the following steps: pulverize straw...

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Abstract

A flue gas adsorption desulfurizer is prepared from the following raw materials by weight: 100-120 parts of charcoal, 10-12 parts of zinc chloride, 30-35 parts of magnesium chloride, 20-24 parts of calcium oxide, 50-55 parts of attapulgite, 20-24 parts of straw, 3-4 parts of expandable graphite, 30-35 parts of expanded perlite, 30-35 parts of eclipta alba, 15-18 parts of raw radix astragali, 12-14 parts of peanut shells, 2-3 parts of glycerin, 2-3 parts of stearic acid polyoxyethylene ester, 4-5 parts of auxiliary agents, and a proper amount of water. By using plant raw materials such as straw and the like, through high temperature charring and processing with chemicals such as zinc chloride and the like, the desulfurizer of the invention is provided with a form with a developed pore structure and a large specific surface area, has high-efficient adsorption effect, also generates alkaline substances, and realizes high-efficient desulfurization; by using expandable graphite, expanded perlite and attapulgite, the desulfurizer of the invention has developed pores, and increased desulfurization capacity; the desulfurizer of the invention can also reduce the discharge of harmful gas such as flue dust, carbon monoxide, and the like, and reduce flue gas blackness.

Description

Technical field [0001] The invention relates to a desulfurizer, in particular to a flue gas adsorption desulfurizer and a preparation method thereof. Background technique [0002] At present, there are three main methods for flue gas desulfurization: one is the combustion method of sulfur fixation, which is to add a certain amount of sulfur fixation agent to the coal, so that the sulfur dioxide generated during the combustion of the coal reacts with the sulfur fixation agent, and the sulfate is discharged together with the slag , This method is costly. The other method is wet desulfurization. The spray method is mainly used to absorb sulfur dioxide in the flue gas with an alkaline aqueous solution. This method uses a large amount of water, and the product after desulfurization is difficult to handle, which is prone to secondary pollution and high investment costs. Large area, high equipment anti-corrosion requirements. Another method is the activated carbon adsorption method. T...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
Inventor 陈金莲
Owner WUHU ZHONGLU IND
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