Method and device for synergistically removing fine particles via wet-process flue gas desulfurization

A wet flue gas desulfurization and fine particle technology, which is applied to combined devices, separation methods, chemical instruments and methods, etc., can solve the problem of increased equipment costs, removal of fine particles, uneven mixing of steam and flue gas containing fine particles, etc. problem, to achieve the effect of good effect, equipment investment and construction cost saving

Active Publication Date: 2013-03-13
SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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  • Application Information

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Problems solved by technology

However, this technology to promote the condensation and growth of fine particles in flue gas desulfurization usually needs to add a flue gas humidity adjustment chamber and a phase change condensation chamber to the existing flue gas wet desulfurization device. However, the steam in t

Method used

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  • Method and device for synergistically removing fine particles via wet-process flue gas desulfurization
  • Method and device for synergistically removing fine particles via wet-process flue gas desulfurization
  • Method and device for synergistically removing fine particles via wet-process flue gas desulfurization

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Embodiment 1

[0029] Taking the flue gas of a coal-fired boiler as the processing object, the flue gas volume is 1.0×10 5 N m 3 / h, the temperature of the original flue gas is 118°C, and the mass concentration of the flue dust at the inlet of the desulfurization tower is 70mg / Nm 3 , SO 2 Concentration 1747 mg / Nm 3 , with limestone slurry as the absorbent, the section of the clean flue gas uniform distributor 9 is divided into 16 pieces of equal area, and 3 pieces of flue partitions 11 are set at an angle of 30° to the flow direction of the flue gas, and the steam phase changes The amount of steam injected into the area is 0.04kg / Nm 3 ;After the flue gas is treated, the temperature of the flue gas at the chimney outlet is 49°C, and the mass concentration of the flue gas is 28mg / Nm 3 , to meet the emission concentration of smoke and dust stipulated in the "Emission Standard of Air Pollution for Thermal Power Plants" (GB13233-2011) less than 30mg / Nm 3 emission standard, SO 2 Concentratio...

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Abstract

The invention provides a method and a device for synergistically removing fine particles via wet-process flue gas desulfurization, belonging to the technical field of control of fine particulate matters in smoke. The method is characterized by comprising the steps of simply reforming a desulfurization flue in a wet-process desulfurization device, establishing a steam phase change area to ensure that the fine particles condense and grow, establishing a collision condensation area to ensure that the fine particles further condense and grow, effectively capturing the condensed and grown fine particles by using a flue demister and discharging the fine particles out from an outlet of a flue. The device for realizing the method is characterized in that an outlet of an absorption tower is connected with an increasing coupling at the inlet end of the desulfurization flue, the outlet end of the desulfurization flue is connected with a reducing pipe at the outlet of the flue, and a smoke uniform distributor, a steam nozzle, a cleaning process water nozzle, a flue water collection port and the flue demister are arranged in sequence along the flow direction of the smoke. The method and the device have the beneficial effects of saving the equipment investment cost and having good fine particle removal effect through simply reforming the original facility.

Description

technical field [0001] The invention belongs to the technical field of fine particulate matter control in flue gas, and in particular relates to a method and device for wet flue gas desulfurization and collaborative removal of fine particulate matter. Background technique [0002] In the wet flue gas desulfurization (WFGD) process, on the one hand, the particulate matter in the flue gas can be synergistically removed by the washing effect of the desulfurization slurry; Fine particulate matter and SO in flue gas 2 The complex heterogeneous reaction process between such gaseous components may itself form PM with a diameter less than or equal to 2.5 microns 2.5 fine particles. while PM 2.5 Fine particles, although small in size, have a greater impact on human health and the quality of the atmospheric environment. In February 2012, the State Council agreed to release PM 2.5 Listed as one of the monitoring indicators. However, PM 2.5 The treatment effect is often poor. ...

Claims

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Application Information

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IPC IPC(8): B01D50/00
Inventor 高继贤洪小松阎冬张小娟杨春琪
Owner SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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