Double stage desulfurizing and dedusting apparatus

A technology for desulfurization and dust removal and dust removal devices, which is applied in the direction of dispersed particle separation, chemical instruments and methods, and the use of liquid separation agents, etc. It can solve the problem of calcium sulfate and calcium carbonate crystals clogging equipment, unable to effectively remove liquid droplets, and equipment cannot operate normally, etc. problems, to achieve the effect of compact equipment, saving space and easy installation

Inactive Publication Date: 2006-06-14
北京德厚朴化工技术股份有限公司
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  • 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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  • Double stage desulfurizing and dedusting apparatus
  • Double stage desulfurizing and dedusting apparatus
  • Double stage 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 diversion impact 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 body...

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Abstract

The invention is a two-stage desulfurization and dust removal device. It includes a shell and a lye circulation system, and is characterized in that it is composed of low-resistance nozzles, low-speed Venturi tubes, impact baffles and circularly arranged baffle demisters that are installed sequentially from bottom to top. The beneficial effects of the present invention are: in the secondary desulfurization cycle, the structure of low-speed Venturi + impact baffle is adopted, so that the air resistance is low, the desulfurization efficiency is high, and it plays the role of primary dehydration; The device can completely remove the fine water droplets in the flue gas to ensure that the flue gas does not contain water. This structure has changed the plane layout of the traditional demister, and changed it to a unit structure. The perimeter of the dehydration flap is increased per unit area, which is more convenient for installation and maintenance, and the dehydration is more thorough due to the vertical installation of the deflector. , avoiding the secondary entrainment of flue gas, allowing a higher flow rate than flat installation, making the equipment more compact and saving 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 Patents(China)
IPC IPC(8): B01D47/10B01D53/78B01D47/00
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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