Combined high-effective wet desulfurization dust-removing equipment

Abstract

The combined high-effective wet desulfurizing dust-removing equipment includes lower dry type cyclone dust collector, its bottom portion is equipped with ash exhauster, ash discharging device and outward ash-exhausting cylinder, a lower external cyclone body is set on the outward ash-exhausting cylinder. It is characterized by that in the interior of outward ash-exhausting cylinder an internal ash-exhausting cylinder is set, on the internal ash-exhausting cylinder and in lower external cyclone body interior oa lower internal cyclone body is set, one side of lower internal cyclone body is equipped with guide vane, on the top plate or the lower internal cyclone body a tornadotron is set, and on the lower dry-type cyclone dust collector an upper wet desulfurizing dust-removing device is set,and said tornadotron is connected with upper wet desulfurizing dust-removing device.

Description

(1) Technical field: [0001] The invention relates to the technical field of flue gas desulfurization and dust removal for industrial boilers, in particular to a combined high-efficiency wet desulfurization and dust collector which combines dry dust removal and wet desulfurization dust removal. (two) background technology: [0002] At present, the flue gas desulfurization of industrial boilers generally adopts post-combustion desulfurization. Post-combustion desulfurization is divided into three types: dry method, dry-wet method and wet method. Among these three desulfurization methods, wet desulfurization is the most commonly used. The basic process of wet desulfurization It is to wash the flue gas with a desulfurizing agent solution in the desulfurization reaction tower, so that the two have a strong chemical reaction and mass transfer process, so as to remove the sulfide in the flue gas and achieve the purpose of purifying the flue gas. [0003] The existing industrial boi...

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Problems solved by technology

The integrated wet desulfurization dust collector can be divided into two categories. One is the common stone water film dust collector. This kind of dust collector covers a large area and has a long installation period. The fan is overloaded, the water consumption is large, and it is easy to cause secondary pollution. The sedimentation tank has a large volume and needs to be equipped with sludge removal equipment; the other type is a steel wet desulfurization dust collector. The disadvantage is that the desulfurization water is used once (some also can be recycled), waste water and easily cause secondary pollution, the PH value of desulfurization water is difficult to adjust, rely on manual intermittent sewage discharge, the operation effect fluctuates, the desulfurization effect cannot be achieved stably, and the exhaust smoke carries water, which corrodes the internal machine and chimney

[0006] In addition, the applicant applied for a patent number of 02213128.0 on March 1, 2002, and the project name is a patent for a combined high-efficiency wet desulfurization dust collector. In addition, there is a certain amount of moisture in the flue gas of the wet desulfurization and dust removal device on the upper part, which will corrode the induced draft fan and the chimney; there is also a chemical dosing balance tank device on the external sedimentation tank, which is complex and costly. high

[0007] Therefore, a combined high-efficiency wet desulfurization dust collector with high dust removal efficiency, good desulfurization effect, no corrosion of induced draft fan and chimney, reduced flue gas flow resistance, water saving, eradication of sewage secondary pollution, simple equipment, and low cost has not been seen so far. see

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