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Dry process stack gas desulfur system using multi tower in parallel structure

A technology of dry flue gas desulfurization and parallel connection, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve problems such as not being able to meet the fluidization requirements of large-scale flue gas desulfurization reactions, and achieve low desulfurization technical requirements. , lower height, and lower water consumption

Inactive Publication Date: 2005-09-07
WUHAN KAIDI ELECTRIC POWER CO LTD
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Problems solved by technology

However, all current fluidized dry desulfurization technologies cannot meet the fluidization requirements of large-scale flue gas desulfurization reactions when the unit capacity is large

Method used

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  • Dry process stack gas desulfur system using multi tower in parallel structure
  • Dry process stack gas desulfur system using multi tower in parallel structure
  • Dry process stack gas desulfur system using multi tower in parallel structure

Examples

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Embodiment Construction

[0023] The present invention provides an example of a thermal power generation unit with a single installed capacity of 600MW, and adopts a dry flue gas desulfurization reaction system with the characteristic of parallel connection of two sub-desulfurization reaction towers.

[0024] First, the flue gas discharged from the combustion equipment passes through a flue gas pre-dust removal device 6 (such as electrostatic precipitator, bag filter, inertial separation dust collector or their combination), to remove about 90% of the fly ash in the flue gas, after The flue gas after pre-dust removal is sent into the flue gas mixing chamber 4, and the flue gas is evenly distributed to the flue gas injection acceleration of each sub-desulfurization reaction tower 1 through the flue gas deflector 2 arranged in the flue gas mixing chamber 4 In the device 3 (such as a Venturi nozzle), the outlet velocity range of the flue gas jet is maintained at 10-55m / s, and is accelerated to enter the bo...

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Abstract

A dry-method fume-desulfurizing system with parallel more towers features that its desulfurizing reaction tower is composed of 2 or more desulfurizing reaction subtowers, whose fume mixing chambers at their bottom are parallelly connected to form a large desulfurizing reaction system with wide regulation range. Said fume mixing chamber has the guide plate for uniformly distributing the fume to the fume jet accelerator in each substower. There is a composite fume jet in the middle of said subtower to form a strong turbulent mixing region.

Description

technical field [0001] The invention relates to a large-scale dry flue gas desulfurization method, which belongs to the technical field of flue gas desulfurization, and in particular relates to a large-scale dry desulfurization system and process in flue gas discharged from various large-scale combustion equipment. Background technique [0002] The control of sulfur dioxide gas pollution has always been the focus of environmental protection in most countries in the world, and the pollutants produced by it are the largest source of pollution that has caused damage to the ecological environment in my country. At present, it has become the top priority of air pollution control in my country. [0003] At present, the treatment of sulfur dioxide generally adopts the wet lime-gypsum method (W-FGD) in foreign countries. Although the above-mentioned method has a good removal effect, it has huge investment, large water consumption, large floor area, complex sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/50B01D53/83
Inventor 徐尹生徐志安刘亚丽李雄浩张泽林冲胡永锋
Owner WUHAN KAIDI ELECTRIC POWER CO LTD
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