Doublestage desulfurizing and dedusting apparatus

A technology for desulfurization, dust removal, and dust removal devices, which is used in the separation of dispersed particles, chemical instruments and methods, and the use of liquid separators. problems, to achieve the effect of compact equipment, space saving and easy installation

Active Publication Date: 2004-11-10
北京德厚朴化工技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation of adding alkali, due to the small packing and device space inside the equipment, the anti-scaling ability is poor, and the desulfurization liquid generates calcium sulfate and calcium carbonate crystals under the action of high-temperature flue gas to block the equipment, causing the equipment to not operate normally; in addition, because there is no The special flue gas demisting device causes the fan to carry water, which cannot effectively remove the liquid droplets in the flue gas

Method used

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  • Doublestage desulfurizing and dedusting apparatus
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  • Doublestage desulfurizing and dedusting apparatus

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Embodiment Construction

[0011] The secondary desulfurization and dust removal device of the present invention includes a casing and an alkali liquor circulation system. Its shell is a tank with an open top and bottom.

[0012] A supporting partition 4 is fixed on the lower part of the tank body, and a plurality of circular holes are arranged on the plate, and each hole is correspondingly fixed with a low-velocity Venturi tube 2 with a flow rate of 15-20 meters per second. On the top of the inner pipe, a deflector strikes the baffle plate 3 is fixed. The corresponding low-velocity Venturi tube position below the supporting partition is provided with a shower nozzle 1 communicated with the lye pipe, and this shower nozzle is a low-resistance nozzle that requires its resistance to drop within 2 meters of water column. The surface of the supporting partition is also coated with a coating 9 made of water glass and cast stone powder.

[0013] A mounting plate 5 is also fixed on the upper part of the tank...

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Abstract

The invention is a two-stage desulfurizing and dust-cleaning device, including a shell and a lye circulating system, and its character lies in that it is composed of low-resistance spray head, low-speed venturi tube, impact baffle and annular-arranged baffling plate demister, which are installed in turn from top to bottom. Its beneficial effect: during two-stage desulfurization circulation, adopting a low-speed venturi tube plus impact baffle structure to make the gas resistance low and desulfurizing efficiency high and play a role in primary dehydrating, and the low-resistance demister on the top of the desulfurizing tower can thoroughly eliminate fine water drops in the fume, ensuring that the fume carries no water. It is of a unit structure, convenient for installing and overhauling, the baffling plate can thoroughly dehydrate all the more because of vertical installation, avoiding secondary carrying of the fume, and it has higher flow speed and compacter device, saving the space.

Description

technical field [0001] The invention relates to boiler desulfurization and dust removal technology, in particular to a secondary desulfurization and dust removal device. Background technique [0002] Flue gas desulfurization and dust removal of small and medium-sized power plants and large and medium-sized industrial boilers is related to the air quality and environmental protection in the region, and is closely related to the health of the people. In the prior art in this field, a separate dust collector, or a dust collector shared by flue gas dust removal and desulfurization is often used. This type of dust collector has a good effect on the removal of smoke particles, but has a poor effect on desulfurization. Especially in the combined work of dust removal and desulfurization, fouling often occurs. During the operation of adding alkali, due to the small packing and device space inside the equipment, the anti-scaling ability is poor, and the desulfurization liquid generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/00B01D53/78
Inventor 彭铁成刘宗瑜
Owner 北京德厚朴化工技术股份有限公司
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