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System for removing high-concentration sulfur dioxide in flue gas by means of cascading twin-tower wet method

A sulfur dioxide, high-concentration technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as increasing spray density and consuming doubled electric energy.

Inactive Publication Date: 2015-11-11
湖南高华环保股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When a large unit burns high-sulfur coal, high-concentration sulfur dioxide is produced. The single-tower spraying of the wet desulfurization system is used to achieve higher desulfurization efficiency. The usual method is to increase the spray density and slurry circulation volume. At the same time, the power and head of the slurry circulation pump are required. The bigger it is, the more power it consumes

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  • System for removing high-concentration sulfur dioxide in flue gas by means of cascading twin-tower wet method
  • System for removing high-concentration sulfur dioxide in flue gas by means of cascading twin-tower wet method
  • System for removing high-concentration sulfur dioxide in flue gas by means of cascading twin-tower wet method

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Embodiment Construction

[0025] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0026] In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, t...

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Abstract

A system for removing high-concentration sulfur dioxide in flue gas by means of a cascading twin-tower wet method comprises purification towers and a smoke exhaust tower. A solution pool, spraying assemblies and a condenser are arranged inside the purification towers. Each spraying assembly comprises a spraying pipe. Anticorrosion nozzles are arranged on each spraying pipe. A gas inlet and a gas outlet are formed in the purification towers. The purification towers comprise the front tower and the rear tower. The gas outlet of the front tower and the gas inlet of the rear tower are connected through a pipeline to form a twin-tower purification set. The smoke exhaust tower is connected with a second ventilation pipeline. The cascading twin-tower method spraying method is adopted, and the sulfur removal efficiency of a single purification tower can be decreased; due to the fact that the number of the purification towers is increased, the sulfur removal efficiency of the whole purification set can still be ensured even though the sulfur removal efficiency of the single purification tower is decreased.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment equipment, and more specifically relates to a system for removing high-concentration sulfur dioxide from flue gas by wet method in series with two towers. Background technique [0002] At present, the desulfurization system needs to consume a large part of energy (mainly electric energy) while removing sulfur dioxide in the flue gas. The higher the sulfur content of coal, the higher the energy consumption to achieve the same desulfurization efficiency. [0003] Wet desulfurization process In all desulfurization processes, the power consumption of the system is the highest during operation, usually accounting for about 0.6-1% of the power generation, and the high-sulfur coal unit can be as high as more than 3%. At present, domestic wet desulfurization generally adopts single absorption tower, and the desulfurization process adopted is mainly limestone gypsum wet desulfurization process. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
Inventor 李滔
Owner 湖南高华环保股份有限公司
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