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Industrial tail gas high-efficiency desulfurizer and preparation method thereof

A technology for industrial tail gas and desulfurization agent, applied in separation methods, chemical instruments and methods, gas treatment and other directions, can solve the problems of low reaction activity of absorbent slaked lime, affecting product storage and application effects, and unstable properties of sodium bicarbonate, etc. Achieve the effect of easy market acceptance, simple structure and strong promotion

Pending Publication Date: 2021-06-22
河北驰田环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Exhaust gas from industries such as iron and steel, coking, cement, coal-fired power generation, refractory material production, and waste incineration has become one of the major problems in urban economic development. How to control exhaust emissions has also attracted widespread attention. The composition is extremely complex, and the main pollutants are smoke, acid gas, etc. At present, most of the domestic use semi-dry method to treat the acid gas in the tail gas. The removal of acid gas is not complete and cannot meet higher standards of emission requirements. Sodium bicarbonate can be used to solve the above-mentioned acid gas treatment in industrial tail gas, which has a better treatment effect than hydrated lime. With the continuous development of science and technology, people are more interested in desulfurizers. The manufacturing process requirements are getting higher and higher
[0003] Existing desulfurizers have certain disadvantages when used. Sodium bicarbonate is unstable in nature, and it will be decomposed into sodium carbonate and water in an environment with a processing temperature higher than 40 ° C. It is also easy to absorb moisture in the air during storage. The phenomenon of agglomeration affects the storage and application effect of the product, is not conducive to people's use, and brings certain adverse effects to people's use process. Therefore, we propose a high-efficiency desulfurizer for industrial tail gas and its preparation method

Method used

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  • Industrial tail gas high-efficiency desulfurizer and preparation method thereof
  • Industrial tail gas high-efficiency desulfurizer and preparation method thereof
  • Industrial tail gas high-efficiency desulfurizer and preparation method thereof

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preparation example Construction

[0030] Such as Figure 1-6 As shown, a high-efficiency desulfurizer for industrial tail gas and its preparation method include the following raw materials: taking common baking soda products as raw materials, sodium bicarbonate products, and anti-caking agents with feldspar minerals as main components, and the addition ratio is 0.5-40%.

[0031] Further, feldspar mineral products include orthoclase, albite, anorthite, barium feldspar, barium ice feldspar, microcline, sanidine and all minerals with feldspar as the main component.

[0032] Further, feldspar mineral products can be used alone as an anti-caking agent. When used alone, the proportion of feldspar added is 0.5% or more, that is, the proportion of baking soda in the product is less than 99.5%, and the proportion of feldspar powder is greater than 0.5%.

[0033] A preparation method of an industrial tail gas high-efficiency desulfurizer, comprising the following steps:

[0034] S1: Use ordinary baking soda products a...

Embodiment 1

[0045] Application case of using feldspar alone as anti-caking agent

[0046] The proportioning ratio is 4% feldspar, 96% baking soda product, and the D50 value of the product is about 10um. After mixing evenly, it is sealed and stored. One group is under pressure with a pressure of 1000kg / ㎡, and one group is not under pressure; another two groups are used Baking soda products with the same particle size, without adding any anti-caking agent, are sealed and stored, and used as a control group for comparative experiments. One group is under pressure, the pressure is 1000kg / ㎡, and the other group is not under pressure;

[0047] After 1 day, 10 days, 20 days, and 30 days of natural storage, open the product package, take a sample to detect the proportion of product agglomeration, use the +2mm sieve as a reference data, and compare it with the pure sodium bicarbonate product stored in the same state;

[0048] From the comparison results, the effect of using orthoclase as an anti-c...

Embodiment 2

[0051] Application case of using high-efficiency desulfurizer to treat acidic industrial waste gas in cement industry

[0052] The production capacity of the production line is 2,500 tons / h. The original process uses calcium hydroxide for treatment, and the dosage is 300kg / h. The concentration of sulfur dioxide in the flue gas can be reduced to 8mg / m 3 , in the grinding state, and the spray tower is in operation, the winter emission standard tends to be stricter, the state requires cement industry enterprises to control production according to the total emission, so the enterprise hopes to reduce the emission standard to near zero, in the condition of calcium hydroxide process In this situation, even if the usage is greatly increased, the concentration of sulfur dioxide cannot be further reduced;

[0053] Use the B100 type high-efficiency desulfurizer product, the main component is baking soda, and the proportion of feldspar powder is 4%. Add this product to the outlet of the ...

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Abstract

The invention discloses an industrial tail gas high-efficiency desulfurizer and a preparation method thereof, the industrial tail gas high-efficiency desulfurizer comprises the following raw materials: a common sodium bicarbonate product as a raw material, a sodium bicarbonate product and an anti-blocking agent with feldspar minerals as main components, the addition proportion is 0.5-40%. The feldspar mineral product comprises orthoclase, albite, anorthite, celsian, celsian, microcline, sanidine and all minerals with the feldspar as the main component, the feldspar mineral product can be independently used as an anti-blocking agent, and the addition proportion of the feldspar is 0.5% or above when the feldspar mineral product is independently used. According to the industrial tail gas high-efficiency desulfurizer and the preparation method thereof, sodium bicarbonate has obvious advantages in keeping the dispersibility of a product in a long-term storage process and preventing caking performance, is low in cost, is easily accepted by the market, has very strong generalization performance, and is worthy of popularization. The method has the characteristics of high acid gas removal efficiency, low consumption, low comprehensive cost and the like, and brings better use prospects.

Description

technical field [0001] The invention relates to the field of tail gas treatment, in particular to a high-efficiency desulfurizer for industrial tail gas and a preparation method thereof. Background technique [0002] Exhaust gas from industries such as iron and steel, coking, cement, coal-fired power generation, refractory material production, and waste incineration has become one of the major problems in urban economic development. How to control exhaust emissions has also attracted widespread attention. The composition is extremely complex, and the main pollutants are smoke, acid gas, etc. At present, most of the domestic use semi-dry method to treat the acid gas in the tail gas. The removal of acid gas is not complete and cannot meet higher standards of emission requirements. Sodium bicarbonate can be used to solve the above-mentioned acid gas treatment in industrial tail gas, which has a better treatment effect than hydrated lime. With the continuous development of scien...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/50
CPCB01D53/508B01D2258/0283B01D2251/304B01D2251/60
Inventor 王志刚王小申
Owner 河北驰田环保科技有限公司
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