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Device for keeping negative pressure in chimney after assembling fume desulfating device

A technology of desulfurization device and holding device, which is applied in the direction of exhaust gas exhaust device, combustion product treatment, combustion method, etc., can solve problems such as chimney corrosion, achieve the effects of avoiding the influence of corrosion, ensuring normal operation, and easy operation of the device

Active Publication Date: 2006-06-14
孙克勤 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the SO in the flue gas after installing the FGD device 2 The concentration is greatly reduced, but if there are no anti-corrosion measures in the positive pressure area, long-term accumulation will also cause corrosion to the chimney

Method used

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  • Device for keeping negative pressure in chimney after assembling fume desulfating device
  • Device for keeping negative pressure in chimney after assembling fume desulfating device
  • Device for keeping negative pressure in chimney after assembling fume desulfating device

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] The device is composed of an axial flow fan 2, a vibration damping base 3, and a diffuser tube 4, wherein the vibration damping base 3 is a hollow ring, and the axial flow fan 2 is fixed on the vibration damping base 3 and is located on the vibration damping base 3. The middle of the diffuser tube 4 is a trumpet-shaped hollow ring with a large upper part and a smaller lower part.

[0013] 1. Before adopting the device of the present invention, the current situation of the chimney will be evaluated, including the structure and material of the chimney, corrosion or damage, design life and service life, operating conditions, etc. After evaluating and analyzing the possible load and vibration conditions of the chimney, the design and installation of the device of the present invention are started.

[0014] 2. Design of the device. When designing the device, the de...

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Abstract

The invention relates to chimney inner negative pressure holding device after setting flue gas desulfurization device. It includes axial flow fan, vibration reduction base, and pressure expansion tube. The vibration reduction base is hollow circular ring. The axial flow fan is fixed at the middle of the vibration reduction base. The pressure expansion tube is horn shape hollow circular ring. And its opening is towards up. Its down opening is connected to the upper vibration reduction base. The device is set at outlet of the chimney upper. The system can keep chimney inner negative pressure, and prevent chimney inner lining and external cylinder from corroding by the harmful gas. Its operation is simple. And it can reduce vibration to the least.

Description

technical field [0001] The invention relates to a set of equipment system for maintaining negative pressure operation in the chimney after installing a flue gas desulfurization (FGD) device or for increasing the negative pressure in the chimney or other facilities for pipe exhaust in similar fields, which belongs to environmental protection equipment technical field. Background technique [0002] The chimney is an important production equipment structure in a thermal power plant. Most of them are reinforced concrete structures. The safe operation of the power plant requires that the life of the chimney is at least the same as or even longer than that of the boiler. In terms of the structural design of the chimney, it is generally required that the chimney should operate under negative pressure throughout the whole process, so that there is basically no problem of flue gas seeping into the outer wall of the chimney. If there is a positive pressure in the chimney, the flue ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/00F23J13/00
Inventor 孙克勤顾华敏
Owner 孙克勤
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