Ammonia desulfurization technology and device utilizing high potential energy

An ammonia-based desulfurization, high-level technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of poor oxidation effect, large equipment investment, high power consumption, etc., to reduce height, save operating costs, simplify The effect of tower structure

Active Publication Date: 2009-11-18
江苏世纪江南投资有限公司
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Problems solved by technology

[0006] In order to overcome the deficiencies of the existing technology, effectively utilize the energy of the high-level absorption liquid, and simultaneously solve the problems of large investment, high power consumption, and poor oxidation e

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  • Ammonia desulfurization technology and device utilizing high potential energy

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Embodiment Construction

[0020] Process and device of the present invention are described in further detail below in conjunction with accompanying drawing:

[0021] Such as figure 1 As shown, it includes a desulfurization tower (3) and a concentrated crystallization tank (12) located outside the tower, an oxidation connector (8), a low-level circulation pump (10), a high-level circulation pump (13), and a slurry pump (14) And the centrifugal drying system (15); the desulfurization tower (3) is divided into an upper section and a lower section, and there is a gas cap (5) between the upper section and the lower section that only passes through the flue gas. Since there are only two layers of design, it is greatly The height of the desulfurization tower (3) is shortened, thereby reducing the cost; the upper section of the desulfurization tower (3) is provided with an exhaust port (7) and a nozzle (4); the lower section of the desulfurization tower (3) is provided with a nozzle (4), The smoke inlet (1), ...

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Abstract

The invention belongs to the field of environmental protection equipment, which relates to an ammonia desulfurization technology and a device utilizing high potential energy. The device comprises a desulfurizing tower, a concentrated crystallizing pool, an oxidation communication device, a low-level circulation pump, a high-level circulation pump, a crystal pulp pump and a centrifugal drying system which are positioned outside the tower; the desulfurizing tower is divided into an upper layer section and a lower layer section, and a gas cap through which only flue gas can pass is arranged between the upper layer section and the lower layer section; the lower layer section of the desulfurizing tower and the oxidation communication device are both provided with an oxidation gas distributor and an oxidation gas deflector; and spray heads are 2 to 4 layers. Under the precondition that normal desulfurization efficiency is ensured, the invention not only saves the investment but also reduces the running cost.

Description

Technical field [0001] The invention belongs to the field of environmental protection equipment and relates to an ammonia method desulfurization process utilizing high potential energy, and is especially suitable for desulfurization in thermal power plants or desulfurization where the original limestone method is changed to ammonia method. Background technique [0002] At present, the known ammonia-based desulfurization device consists of a desulfurization tower, a primary circulation pump, a secondary circulation pump, a circulation tank, and post-treatment facilities, and the absorption liquid is ammonia solution. Ammonia desulfurization can achieve no waste residue and waste liquid discharge, and the product ammonium sulfate can be used. In order to save energy, the desulfurization tower is usually divided into upper, middle and lower layers. The upper layer is mainly to absorb and purify sulfur dioxide, and the purpose of the middle layer is to initially absorb sulfur di...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/48
Inventor 刘荣甫何金整
Owner 江苏世纪江南投资有限公司
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