System of producing ammonium sulfite through flue gas desulfurization and method thereof

A technology of ammonium sulfite and ammonium bisulfite, applied in the field of desulfurization, can solve problems such as low cost and ammonia escape, and achieve the effects of low cost, solving ammonia escape and saving water resources

Inactive Publication Date: 2015-10-14
张波
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Problems solved by technology

[0004] The purpose of the present invention is also to provide a desulfurization method of the above-mentioned flue gas desulfurizati

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  • System of producing ammonium sulfite through flue gas desulfurization and method thereof

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Embodiment Construction

[0025] Examples, see figure 1 , a system for preparing ammonium sulfite from flue gas desulfurization provided in this embodiment includes a tower body 1, the lower part of the tower body 1 is provided with a flue gas inlet 11, and the position below the corresponding flue gas inlet 11 is located in the tower There is a liquid storage section 2 inside the body 1, and a water washing cooling section 3, a primary absorption section 4, and a secondary absorption section 5 are arranged in the tower body 1 above the flue gas inlet 11 in order from bottom to top. , Washing purification section 6 and defogging section 7.

[0026] The liquid storage section 2 includes a desulfurization liquid distributor 21 and a separator 22 arranged in sequence from bottom to top.

[0027] The water washing and cooling section 3 includes a water washing and cooling spray layer 31 and a first-stage circulating absorption liquid accumulation tank 32 arranged in sequence from bottom to top.

[0028] ...

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Abstract

The invention discloses a system of producing ammonium sulfite through flue gas desulfurization, which includes a column body and an out-column conversion system. A flue gas inlet is arranged on the lower section of the column body. A liquid storage section is arranged in the column body at the position corresponding to the lower section of the flue gas inlet. In the column body, a water-washing temperature-reducing section, a primary absorption section, a secondary absorption section, a purifying and water-washing section and a defogging section are arranged corresponding to the upper position of the flue gas inlet in a successively manner from the bottom to the top. An ammonium sulfite conversion system is arranged outside the column and includes an ammonia gas feeding system and a cyclic adjustment system. The system is smart and reasonable in structure design and solves the problem of high operation cost effectively. The system integrates both absorption and production so that the system is free of waste liquid emission and limits escape and emission of ammonia. A method of producing the ammonium sulfite through flue gas desulfurization is simple in process, is energy-saving and environment-protecting, is low in cost, is safe and stable in operations, can turn waste into resources, and is an important development direction of environment-friendly desulfurization.

Description

technical field [0001] The invention belongs to the technical field of desulfurization, and in particular relates to a method for preparing ammonium sulfite from flue gas desulfurization. Background technique [0002] The desulfurization technology widely used at home and abroad today is mainly wet flue gas desulfurization. Wet flue gas desulfurization is commonly used calcium method using lime or limestone, and the desulfurization efficiency can reach 90%. The disadvantage is that the project is huge, the initial investment and operation costs are high, and it is easy to form secondary pollution. The common ammonia desulfurization product is mostly ammonium sulfate. Although it can be used as agricultural fertilizer, the price is generally low, and the desulfurization investment is high, so it is difficult to have economic benefits. Contents of the invention [0003] In view of the above-mentioned deficiencies, the purpose of the present invention is to provide a flue ga...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/50C01C1/22
Inventor 张波
Owner 张波
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