Dust-containing gas treatment method for dry method dedusting system
A dry dust removal and treatment method technology, applied in separation methods, chemical instruments and methods, furnaces, etc., can solve the problems of condensation, dust removal system failure, high investment and operating costs, and achieves simple and easy methods and low investment costs. , the effect of low implementation cost
Active Publication Date: 2009-12-09
SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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Problems solved by technology
The existence of these moisture not only affects the quality of the gas itself, but also affects the smooth progress of subsequent processes
In the dry dust removal system, once the flue gas temperature is too low, it may condense, causing the cloth bag of the bag filter to be blocked or the insulation degree of the electrostatic precipitator to be reduced, resulting in the failure of the dust removal system, etc.
[0004] In the dry dust removal system, in order to prevent the failure of the dust removal system due to the low flue gas temperature, the method of heating the low-temperature flue gas is usually used. The investment and operation costs are high, and the response speed is low and the control is complicated. , is a last resort
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[0016] The specific implementation of the present invention should try to grasp the following key points: 1. The powdery desiccant should be mixed into the dusty gas to be dehumidified by spraying as much as possible, so that it can be evenly distributed in the dusty gas; 2. The powdery desiccant should be dehumidified as soon as possible 3. Since the calcium oxide-based powder desiccant is cheap and easy to get, it is recommended to use it first; 4. On the premise that the final dust removal effect meets the environmental protection requirements, try to use a finer powder 5. Note that the present invention can achieve better results when used in dry dust removal.
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Abstract
A method for treating dust-containing gas in a dry dust removal system, which is especially suitable for a dry dust removal system. The main method of this method is to mix powder desiccant into the dust-containing gas, and use the desiccant to absorb moisture, so as to achieve the purpose of coping with the condensation of flue gas. The powdery desiccant can be mainly calcium oxide. The dehumidification method is especially suitable for dry dust removal systems, because in this system, preventing the condensation of flue gas is of great significance; the traditional idea is to heat the flue gas, while the idea of the present invention is to reduce the moisture in the flue gas, To achieve the purpose of anti-condensation in a more economical, simpler and more effective way. The main advantages of the present invention are: 1. The method is simple and easy to implement; the desiccant used is cheap and easy to obtain; the investment cost is low; and it is especially suitable for dehumidification of dust-containing gas. 2. Quick response; convenient control, etc.
Description
Technical field [0001] The invention belongs to a method for treating dust-containing gas in a dry dust removal system, and is particularly suitable for the dry dust removal system. Background technique [0002] The dry dust removal system is a kind of dust removal system actively promoted by the country. It includes coarse dust collector, fine dust collector, pipeline and fan, etc. The method of dry dust removal includes the steps of rough dust removal and fine dust removal in a dry state to eliminate most of the smoke and dust in the flue gas, so that it can meet or exceed the national flue gas emission standards. [0003] Many dusty gases, such as gas directly discharged from industrial furnaces such as blast furnaces, coke ovens or converters, often contain a large amount of moisture. The existence of these moisture not only affects the quality of the gas itself, but also affects the smooth progress of subsequent processes. In the dry dust removal system, once the flu...
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IPC IPC(8): B01D53/26C21B5/06
Inventor 姚朝胜钱纲黄东升衣忠德刘忠泉魏新民
Owner SHANDONG PROVINCE METALLURGICAL ENG CO LTD