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Semi-dry circulating cyclone bed desulfurizing tower

A technology of desulfurization tower and swirling bed, which is applied in the field of circulating swirling bed semi-dry flue gas desulfurization, which can solve the problems of small flow field shear force, low air turbulence intensity, and low utilization rate of desulfurization agent

Inactive Publication Date: 2014-01-01
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method solves the problems of relatively small shear force of the flow field in the traditional desulfurization tower, low air turbulence intensity, insufficient contact between flue gas and desulfurizer, and low utilization rate of desulfurizer

Method used

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  • Semi-dry circulating cyclone bed desulfurizing tower
  • Semi-dry circulating cyclone bed desulfurizing tower
  • Semi-dry circulating cyclone bed desulfurizing tower

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Embodiment Construction

[0031] figure 1 It is the structural diagram of the circulating swirl bed desulfurization tower. When a semi-dry circulating swirling bed desulfurization tower of the present invention is used, the flue gas enters the circulating desulfurization reactor (4) from the flue gas inlet pipe (1) through the Venturi tube (2). Due to the suction effect of the Venturi tube (2), the absorbent particles in the dust chamber are drawn into the circulating desulfurization reactor (4). A guide vane (6) is arranged at the outlet of the circulating desulfurization reactor (4) to form a rotation when the flue gas flows out, so that a strong rotating flow field is formed in the circulating fluidized bed desulfurization tower. The fresh desulfurization absorbent is ejected from the desulfurization absorbent outlet pipe (13) in the center of the circulating desulfurization reactor (4) located at the center of the bottom of the desulfurization tower, and shoots to the distributor (7). The materia...

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Abstract

The invention discloses a semi-dry circulating cyclone bed desulfurizing tower. By providing a tangential exhaust gas inlet structure of the desulfurizing tower, a rotating flow field is established inside the desulfurizing tower so as to sufficient mixing and contact of exhaust gas, so that the desulfurizing reaction process inside the desulfurizing tower is intensified, a desulfurizing agent is sufficiently utilized, the desulfurizing efficiency is improved; and secondary air is arranged to intensify the intensity of a rotating flow, so that separation of gas from solid is achieved inside the desulfurizing tower. By adopting the structure, an external cyclone separator in a conventional circulating fluidized bed desulfurizing process is omitted, so that the semi-dry circulating cyclone bed desulfurizing tower is compact in structure and easy to install and maintain.

Description

technical field [0001] The invention relates to a flue gas desulfurization tower, in particular to a circulating swirl bed semi-dry flue gas desulfurization technology. The invention makes the air flow in the circulating swirl bed desulfurization tower in a rotating state by setting a rotating air intake structure, strengthens the turbulence intensity of the air flow, and makes the desulfurizer fully contact with the flue gas, thereby improving the desulfurization efficiency. The air intake structure strengthens the rotation intensity of the dust-laden airflow, and performs the gas-solid separation process, so that the gas-solid separation and flue gas desulfurization are completed in one tower. Background technique [0002] Flue gas desulfurization (FGD-flue gas desulfurization) According to the form of sulfide absorbent and by-products, desulfurization technology can be divided into three types: dry method, semi-dry method and wet method. Dry desulfurization process mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/50B01D45/12
Inventor 宋健斐张慧敏严超宇魏耀东
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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