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Kiln tail gas treatment method

A technology for tail gas treatment and kiln, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of low treatment efficiency, poor comprehensive effect, high construction cost, etc., and achieves low price, low cost, comprehensive good effect

Inactive Publication Date: 2015-09-02
杜小卫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] There are many ways to deal with exhaust gas, but many of them have high cost and low treatment efficiency. There are many technologies that can only deal with a certain pollutant, and the comprehensive effect is poor. Therefore, there is an urgent need for a comprehensive Good effect, low treatment cost, high-efficiency and energy-saving kiln tail gas treatment method

Method used

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  • Kiln tail gas treatment method

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Experimental program
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Effect test

Embodiment 1

[0017] Reduce the exhaust gas from the kiln to 350°C and pass it into the reaction tank. The solution in the reaction tank is composed of ammonia water and TiO 2 as the carrier, with V 2 o 5 or V 2 o 5 -WO 3 or V 2 o 5 -MoO 3 As the active ingredient, it is made into a corrugated catalyst composition, and it is destocked in the reaction pool. The treated gas is passed into the spray tower and then sprayed with lye. The lye is made by dissolving limestone in water. Desulfurization treatment is carried out in the spray tower to obtain gypsum deposits. The desulfurized gas is discharged into the filter cover, filtered and dust removed, and the filtered gas can be directly discharged into the air.

Embodiment 2

[0019] The tail gas discharged from the kiln is lowered to 380°C and passed into the reaction tank. The solution in the reaction tank is composed of urea and TiO 2 as the carrier, with V 2 o 5 or V 2 o 5 -WO 3 or V 2 o 5 -MoO 3 As the active ingredient, it is made into a honeycomb catalyst composition, and it is processed in the reaction pool for destocking. The treated gas is passed into the spray tower and then sprayed with lye. The lye is made by dissolving slaked lime in water. Desulfurization treatment is carried out in the spray tower to obtain gypsum deposits. The desulfurized gas is discharged into the filter cover, filtered and dust removed, and the filtered gas can be directly discharged into the air.

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Abstract

The invention provides a kiln tail gas treatment method and relates to the field of waste gas treatment. The method comprises the following steps: (1) cooling tail gas exhausted from a kiln, leading the tail gas into a reaction pool, adding a reduction agent and a catalyst, and performing denitrification treatment; (2) spraying an alkali liquid into the gas subjected to the treatment in the first step, and performing desulfurization treatment; and (3) performing dust collection on the gas subjected to the treatment in the second step and directly exhausting the purified gas. According to the method, the kiln tail gas can be effectively purified and treated and exhausted up to standard; the method has the efficient and energy-saving effects; the comprehensive effect is good and additional economic value is generated, and thus the function of saving energy and protecting the environment is realized.

Description

technical field [0001] The invention relates to the field of waste gas treatment, in particular to a kiln tail gas treatment method. Background technique [0002] In my country's industry, kilns exist in many factories. However, the use of kilns has caused a large amount of exhaust emissions, which have become an important source of air pollution. These tail gases contain a large amount of sulfides and nitrogen oxides. These harmful tail gases will have a significant impact on the natural environment, causing natural disasters such as acid rain, and affecting the natural environment and human physical and mental health. [0003] There are many ways to deal with exhaust gas, but many of them have high cost and low treatment efficiency. There are many technologies that can only deal with a certain pollutant, and the comprehensive effect is poor. Therefore, there is an urgent need for a comprehensive The utility model has the advantages of good effect, low treatment cost, hig...

Claims

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Application Information

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IPC IPC(8): B01D53/90B01D53/78B01D53/56B01D53/48B01D46/00
Inventor 杜小卫
Owner 杜小卫
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