Flue current equalizer device and design method

A flow equalizer and flue technology, which is applied in the field of flue flow equalizer device and design, can solve the problems of corrosion risk, no general design method, and inability to adapt to high-humidity flue gas of desulfurization tower, so as to reduce operation and maintenance cost, shorten the time consumed by simulation, and improve the effect of stability

Active Publication Date: 2019-01-18
浙江西安交通大学研究院
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  • Claims
  • Application Information

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Problems solved by technology

This method realizes flue gas equalization of the variable cross-section flue by installing a figure-eight-shaped flow equalizer on the variable cross-section flue. The device is simple, and the equalizer is made of steel plate, which cannot

Method used

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  • Flue current equalizer device and design method
  • Flue current equalizer device and design method
  • Flue current equalizer device and design method

Examples

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Embodiment 1

[0038] Embodiment 1, flue flow equalizer device, such as Figure 1-5 As shown, including flow equalizer 3 arranged in variable cross-section flue,

[0039] The variable-section flue includes a variable-section flue inlet section 1, a variable-section flue amplification section 2, and a variable-section flue outlet section 4 connected in sequence, and the diameter of the variable-section flue inlet section 1 is smaller than that of the variable-section flue outlet section 4. diameter.

[0040] When the variable cross-section flue is not equipped with a flow equalizer 3, the flue gas velocity distribution in the variable cross-section flue inlet section 1 is uniform. The flue gas velocity distribution in the outlet section 4 is uneven, the flue gas velocity is fast in the center of the flue, and the flue velocity near the avoiding position of the flue is slow.

[0041] In the present invention, a flue gas passing through the flow equalizer 3 is placed at the junction of the va...

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Abstract

The invention provides a flue current equalizer device, which comprises an equalizer arranged in a variable-cross-section flue, wherein a rectangular array consisting of equalizing holes is arranged on the equalizer; the diameters of the equalizing holes in the equalizer are sequentially increased from the center position to the edge position of the equalizer. The invention also provides a designmethod of the flue equalizer device. The method comprises the following steps of using a flue three-dimensional simplified model; using CAD fluid simulation software to perform calculation optimization on the structure parameter of a variable-cross-section flue smoke gas equalizer; further, the flue three-dimensional simplified model is used in the device; the lattice quantity of the flue three-dimensional model is greatly reduced; the CAD fluid simulation consumption time is shortened; the whole design speed is accelerated; further, the equalizer uses fluoroplastic materials; good material performance such as anti-corrosion and no ash staining can be realized; the operation stability of the equalizer is improved; the operation and maintenance cost is reduced.

Description

technical field [0001] The patent of the present invention belongs to the technical field of low-temperature flue gas flow equalization in the thermal power generation industry, that is, the flue flow equalizer and the design method at the inlet variable cross-section flue of the flue gas treatment equipment downstream of the desulfurization tower, and specifically relates to a flue flow equalizer Devices and design methods. Background technique [0002] In September 2014, the National Development and Reform Commission, the Energy Bureau, and the Ministry of the Environment jointly issued the "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020)", which put forward the most stringent standards in history for the emissions of my country's thermal power industry, that is, in 6%O 2 Under certain conditions, the smoke emission concentration is not higher than 10mg / Nm 3 . Coal-fired power plants across the country have start...

Claims

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Application Information

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IPC IPC(8): B01D53/48F23J13/00
CPCB01D53/48F23J13/00
Inventor 谭厚章阮仁晖
Owner 浙江西安交通大学研究院
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