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A kind of kiln exhaust gas treatment method

A tail gas treatment and kiln technology, which is applied in the field of ceramic manufacturing, can solve the problems of secondary pollution, poor treatment effect and high treatment cost, and achieve the effects of saving production cost, low treatment cost and improving production efficiency

Active Publication Date: 2016-06-29
潘广松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide a kiln tail gas treatment method with good comprehensive effect, high efficiency and energy saving, and realizing the concept of recycling and environmental protection; Utilization, and the comprehensive treatment of kiln exhaust gas and dust-bearing gas purification, solves the problems of high treatment cost, poor treatment effect and related secondary pollution, can effectively improve the utilization rate of tail gas and make the tail gas discharge up to standard, which has the advantages of energy saving The advantages of environmental protection are conducive to the promotion and application of this method in industrial production

Method used

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  • A kind of kiln exhaust gas treatment method

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Effect test

Embodiment 1

[0028] In this embodiment, the temperature of the gas in the hot blast stove is 1000° C., the exhaust gas, the high temperature gas of 1000° C. and the ammonia water are neutralized and the temperature drops to 700° C. The following is described as an example.

[0029] The flow chart of the kiln tail gas treatment method of the present invention is as follows figure 1 As shown, the method for treating kiln tail gas of the present invention includes the following steps:

[0030] In the first step, the tail gas discharged from the kiln is used as a gas regulator and added to the hot blast stove for heating and generating high-temperature dry gas. At this time, the gas temperature in the hot blast stove is heated to 1000°C by the coal water slurry fuel; and at this time Adding ammonia water for exhaust denitrification; after adding kiln tail gas and ammonia water, the temperature of the exhaust gas of the hot blast stove drops to 700°C.

[0031] In the second step, the gas with a tempe...

Embodiment 2

[0036] In this embodiment, the temperature of the gas in the hot blast stove is 1100°C, the exhaust gas, the high temperature gas at 1100°C and the ammonia water are neutralized and the temperature drops to 800°C for the following description.

[0037] The flow chart of the kiln tail gas treatment method of the present invention is as follows figure 1 As shown, the method for treating kiln tail gas of the present invention includes the following steps:

[0038] In the first step, the tail gas discharged from the kiln is used as a gas regulator to be added to the hot blast stove for heating and generating high-temperature dry gas. At this time, the gas temperature in the hot blast stove is heated to 1100°C by the coal water slurry fuel; and at this time Adding ammonia water to denitrify the tail gas; after adding the kiln tail gas and ammonia water, the temperature of the hot blast stove exhaust gas drops to 800°C.

[0039] In the second step, the gas with a temperature of 800°C obta...

Embodiment 3

[0044] In this embodiment, the temperature of the gas in the hot blast stove is 1200°C, the exhaust gas, the high-temperature gas at 1200°C and the ammonia water are neutralized and the temperature drops to 900°C for the following description.

[0045] The flow chart of the kiln tail gas treatment method of the present invention is as follows figure 1 As shown, the method for treating kiln tail gas of the present invention includes the following steps:

[0046] In the first step, the tail gas discharged from the kiln is used as a gas regulator to be added to the hot blast stove for heating and generating high-temperature dry gas. At this time, the gas temperature in the hot blast stove is heated to 1200°C by the coal water slurry fuel; and at this time Ammonia water is added to denitrify the tail gas; after the kiln tail gas and ammonia water are added, the temperature of the exhaust gas of the hot blast stove drops to 900°C.

[0047] In the second step, the gas with a temperature o...

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Abstract

The invention provides a method for treating tail gases from kilns. The method has good comprehensive effects and is efficient and energy-saving. The method comprises the following steps of: 1. adding tail gases, as gas modifiers, exhausted by kilns to a heating device used for heating to generate high-temperature dried gases, and carrying out denitrification treatment; 2. introducing the gases obtained after completing the step 1 into a spray tower to come into contact with slurry to be dried so as to obtain dry powder; 3. introducing the remaining gases after completing the step 2 into a sprinkling tower to be desulfurized and dedusted, exhausting the purified gases outwards, and discharging liquid and silt after reaction to a settling tank to serve as raw materials. The treatment method has the advantages and beneficial effects that the tail gases from the kilns can be effectively purified and exhausted up to the standard; meanwhile, in a process of purifying the tail gases from the kilns, the dry powder and the raw materials are obtained by reasonably recovering and utilizing the heat from the tail gases, thus not only improving the effect of purifying the tail gases from the kilns but also increasing the utilization rates of the tail gases from the kilns so as to achieve the effects of energy conservation and environment friendliness.

Description

Technical field [0001] The invention relates to the field of ceramic manufacturing, and more specifically, to a method for processing exhaust gas from a ceramic kiln. Background technique [0002] Among the decoration materials used in our country, ceramic tiles are a necessary product in a large amount. However, ceramic production is also an important source of air pollution. Because of the characteristics of ceramics that must be fired at high temperatures to be porcelain, the ceramic industry has always been an industry with high energy consumption, high resource consumption and high pollution. In the production process of ceramic products, due to the combustion of fuels such as natural gas, liquefied gas, coal gas, light diesel, heavy oil, coal, etc., a large amount of sulfur compounds, oxygen and nitrogen compounds and fluorine compounds will be released. These harmful exhaust gases will cause serious damage to the natural environment. Impact, cause natural disasters such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/75B01D53/78B01D53/56B01D53/48B01D47/06B01D1/14
Inventor 潘广松
Owner 潘广松