Energy-saving high effective desulfurizing and dust control method and equipment using remaining heat

A desulfurization and dust removal, energy-saving technology, applied in the direction of separation methods, chemical instruments and methods, and the use of liquid separation agents, etc., can solve the problems of insufficient energy utilization, large flue gas resistance, and large energy consumption, and achieve desulfurization and dust removal efficiency High and low operating costs

Inactive Publication Date: 2004-01-14
ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

However, the setting of the nozzle of the Venturi scrubber greatly reduces the resistance of the flue gas, and a high-power induced draft fan is required to make the whole system operate normally, and the energy consumption is quite large.
However, the energy carried by the high-temperature flue gas is not fully utilized, resulting in waste

Method used

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  • Energy-saving high effective desulfurizing and dust control method and equipment using remaining heat
  • Energy-saving high effective desulfurizing and dust control method and equipment using remaining heat

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Embodiment Construction

[0017] As shown in the figure, an energy-saving desulfurization and dust removal device for waste heat utilization includes a venturi tube and a desulfurization and dust removal tower 1. The venturi tube is composed of a contraction section 6, a mixing section 5, and a diffusion section 4. The contraction section 5 is equipped with The main heat exchanger 7, the auxiliary heat exchanger 8 and the nozzle 9, the inlet of the inner pipe of the main heat exchanger 7 communicates with the clear water tank 3 through the water pump 2, and the outlet communicates with the tail of the nozzle 9; the inlet of the inner pipe of the auxiliary heat exchanger 8 passes through The circulating water pump 10 is connected with the circulating water pool 11 of the desulfurization and dedusting tower 1 , and the outlet communicates with the middle part of the nozzle 9 .

[0018] The nozzle 9 is a water vapor two-phase nozzle, and the direction of the nozzle is consistent with the flow direction of ...

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Abstract

An energy-saving efficient desulfurizing and dusting method and apparatus using afterheat is disclosed. Said method features that the residual of high-temp fume is used to heat water to become steam, which is then sprayed out at high speed by the nozzle of Venturi tube to provide power for forcing the fume to pass through said apparatus. Said apparatus is composed of Ventiru tube and desulfurizing-dusting tower. In the contraction segment of venturi tube, there are primary heat exchanger, secondary heat exchanger and nozzle. Its advantages are low cost and high efficiency of 90% of desulfurizing and 99.5% for dusting.

Description

technical field [0001] The invention relates to a method and device for desulfurization and dust removal of flue gas for kilns and boilers, in particular to an energy-saving and high-efficiency desulfurization and dust removal method and device for utilizing the waste heat of flue gas. Background technique [0002] In the desulfurization and dust removal devices for furnace and boiler flue gas, when the desulfurization and dust removal efficiency is required to be high, the Venturi tube is widely used. Venturi tube belt liquid spraying device can be used for flue gas desulfurization and dust removal of various furnaces and boilers, and can also be used for dust removal and desulfurization of various processes. It has high desulfurization and dust removal efficiency, small dust particle size collected, low investment cost, It can be used to deal with viscous dust and combustible dust. But Venturi has a big weakness, that is, the resistance drop is lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/10B01D53/79
Inventor 吴忠标程常杰
Owner ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH
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