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Filler for smoke desulfurization and denitrification and preparation method thereof

A technology for desulfurization, denitrification, and flue gas, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of high flue gas pollution index, insignificant desulfurization and denitrification effect, waste of industrial sulfuric acid resources, etc., so as to avoid physical harm. , excellent desulfurization effect

Active Publication Date: 2017-02-22
LIAONING BEIHUAN PURIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, in order to reduce the pollution index of nitrogen and sulfur compounds in flue gas, flue gas desulfurization and denitrification technology is usually used, which is divided into two categories: wet method and dry method. Although the wet method is relatively mature, there are many problems, such as: The water consumption is large, and a large amount of water resources are wasted; secondary pollution is formed. Wet treatment processes sulfur, nitrate and other pollutants in the air into the treatment liquid. The polluted liquid does not undergo secondary treatment. If it is directly discharged, it will cause secondary pollution. ; The treated sulfuric acid cannot be recycled, resulting in a waste of industrial sulfuric acid resources
Although dry desulfurization and denitrification solves many shortcomings of wet desulfurization and denitrification, it is still in the exploratory stage in my country. Some existing manufacturers treat dry desulfurization and denitrification at the same time. As a result, the effect of desulfurization and denitrification is not obvious. Smoke pollution index is still high

Method used

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  • Filler for smoke desulfurization and denitrification and preparation method thereof
  • Filler for smoke desulfurization and denitrification and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 4 parts of MgO, MgCl 2 ·6H 2 O 6 parts, phosphoric acid 0.1 part, glass fiber 1 part, adhesive neoprene rubber powder 0.5 part, hydrogen peroxide 0.8 part.

[0026] The preparation method of the filler for flue gas desulfurization and denitrification comprises the following steps.

[0027] (1) Ingredients and stirring: Weigh magnesium oxide, magnesium chloride, glass fiber, rubber powder and phosphoric acid according to the proportion by weight, put them into a stirrer and stir at 2000r / min, stir for 10 min; then add hair Foaming agent, continue to stir for 2 minutes.

[0028] (2) Molding and foaming treatment: Add the mixed material stirred in step (1) into the mold, let it stand for 45 minutes for foaming, put it into a constant temperature workshop with an ambient temperature of 50°C, store it for 2 days, and increase the curing strength. Take out the finished product and set aside.

[0029] In the flue gas desulfurization and denitrification process, the packing...

Embodiment 2

[0031] 5 parts of MgO, MgCl 2 ·6H 2 O 5 parts, phosphoric acid 0.5 parts, glass fiber 0.2 parts, nitrile rubber powder 0.8 parts, hydrogen peroxide 0.5 parts.

Embodiment 3

[0033] 6 parts of MgO, MgCl 2 ·6H 2 8 parts of O, 0.4 parts of phosphoric acid, 0.8 parts of glass fiber, 1 part of polyisobutylene rubber powder, and 1 part of hydrogen peroxide.

[0034] 1. Example test.

[0035] 1. Test location: Zhangwu County.

[0036] 2. Test time: September 6th.

[0037] 3. Test conditions: The packing prepared in Example 1 is used to treat the flue gas discharged from a 2-ton coal-fired steam boiler, the air volume is 10,000 air volume, and the diameter of the desulfurization and denitrification tower is Φ1200 and the height is 13 meters.

[0038] 4. Test results: See Table 1.

[0039] Table 1 The content of sulfur and nitrogen compounds before and after flue gas treatment.

[0040]

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Abstract

The invention belongs to the technical field of smoke control, and particularly relates to filler for smoke desulfurization and denitrification and a preparation method thereof. The filler is prepared from, by weight, 4-6 parts of magnesium oxide, 5-8 parts of magnesium chloride, 0.1-0.5 part of phosphoric acid, 0.2-1 part of glass fiber, 0.5-1 part of adhesive and 0.5-1 part of foaming agent. The filler block can be directly placed in a container for smoke to pass through (desulfurization tower or denitrification tower) in smoke desulfurization and denitrification; a water spraying pipe is arranged at the upper portion of the container, and water is used for collecting and adsorbing crystal substances produced on the surface of the filler in the reaction process. The filler block is low in cost, can effectively remove nitrogen compounds and sulfur compounds in smoke and can not cause secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of flue gas control, and in particular relates to a filler for flue gas desulfurization and denitrification and a preparation method thereof. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of flue gas is very complex, including water vapor, SO 2 , N 2 , O 2 , CO , CO 2 and other hydrocarbons and nitrogen oxides. Soot includes fuel ash, coal particles, oil droplets, and pyrolysis products. Therefore, the pollution of flue gas to the environment is the compound pollution of various poisons. High smoke concentration can cause acute poisoning, manifested as cough, sore throat, chest tightness, asthma, headache, stinging eyes, etc., and severe cases may die. The most common is chronic poisoning, which can cause irritation to the mucous membrane of the respiratory tract and lead to chronic bronchitis. Yokkaichi ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/82B01D53/56B01D53/48
CPCB01D53/02B01D53/48B01D53/565B01D53/82B01D2251/402B01D2258/0283
Inventor 李德生王会强
Owner LIAONING BEIHUAN PURIFICATION TECH
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