Double-delta wing type static mixer and gas mixing method

A technology of static mixer and static mixing device, which is applied in the direction of chemical instruments and methods, gas treatment, separation methods, etc., can solve the problems of flow field deterioration, serious dust accumulation, and increased system resistance, so as to achieve low smoke resistance, Retrofit costs are low and the effect of reducing losses

Pending Publication Date: 2020-06-09
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical engineering applications, especially for ultra-low emission renovation projects, some static mixers improve the mixing efficiency on the one hand, but bring about a series of problems such as increased system resistance, serious dust accumulation, and deterioration of the flow field.

Method used

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  • Double-delta wing type static mixer and gas mixing method
  • Double-delta wing type static mixer and gas mixing method
  • Double-delta wing type static mixer and gas mixing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 of the present invention: a double-delta airfoil static mixer comprises a group of static mixing devices 1, the static mixing device 1 includes at least one double-delta airfoil mixing unit 2, and the double-delta airfoil mixing unit 2 includes two The horizontally arranged mixing monomer 3 and the two vertically arranged mixing monomers 4, the two horizontally arranged mixing monomers 3 are arranged symmetrically with the first diagonal line 5, and the two vertically arranged mixing monomers 4 are arranged in a second pair The corner lines 6 are arranged symmetrically, and the tips of the two horizontally arranged mixed monomers 3) and the two vertically arranged mixed monomers 4 meet at one point.

Embodiment 2

[0035] Embodiment 2 of the present invention: a double delta airfoil static mixer, including two sets of static mixing devices 1, both of which are installed in the flue of the out-of-stock system. Static mixing device 1 comprises at least one double delta wing type mixing unit 2, double delta wing type mixing unit 2 comprises two horizontally arranged mixing cells 3 and two vertically arranged mixing cells 4, two horizontally arranged mixing cells The body 3 is symmetrically arranged on the first diagonal line 5, and the two longitudinally arranged mixed monomers 4 are arranged symmetrically on the second diagonal line 6, and the two horizontally arranged mixed monomers 3 and the two vertically arranged mixed monomers 4 A tip of each meets at one point. Two horizontally arranged mixing cells 3 and two vertically arranged mixing cells 4 all include rectifying blades 7, first rotating blades 8 and second rotating blades 9, one side of the first rotating blade 8 and one side of ...

Embodiment 3

[0036] Embodiment 3 of the present invention: a kind of double delta airfoil static mixer, comprises a group of static mixing device 1, and static mixing device 1 comprises four double delta airfoil mixing units 2, four double delta airfoil mixing units successively connect. The double delta airfoil mixing unit 2 includes two horizontally arranged mixing cells 3 and two vertically arranged mixing cells 4, the two horizontally arranged mixing cells 3 are symmetrically arranged on the first diagonal line 5, and the two vertically arranged The arranged mixing units 4 are arranged symmetrically with respect to the second diagonal line 6 , and the tips of the two horizontally arranged mixing units 3 and the two vertically arranged mixing units 4 meet at one point. Two horizontally arranged mixing cells 3 and two vertically arranged mixing cells 4 all include rectifying blades 7, first rotating blades 8 and second rotating blades 9, one side of the first rotating blade 8 and one sid...

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PUM

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Abstract

The invention discloses a double-delta wing type static mixer. The double-delta wing type static mixer comprises at least one group of static mixing devices, wherein each static mixing device comprises at least one double-delta wing type mixing unit. Each double-delta wing type mixing unit comprises two transversely-arranged mixing single bodies and two longitudinally-arranged mixing single bodies, wherein the two transversely-arranged mixing single bodies are symmetrically arranged about a first diagonal line, the two longitudinally-arranged mixing single bodies are symmetrically arranged about a second diagonal line, and one tip end of each of the two transversely-arranged mixing single bodies and one tip end of each of the two longitudinally-arranged mixing single bodies are connected to one point. The invention further discloses a gas mixing method. The double-delta wing type static mixer is simple in structure, easy to arrange, good in gas mixing effect, small in resistance, smallin influence on an original flow field in a flue and suitable for project transformation.

Description

technical field [0001] The invention relates to the field of industrial flue gas purification of coal-fired boilers, industrial boilers, sintering machines, etc., in particular to a double delta airfoil static mixer and a gas mixing method. Background technique [0002] Selective catalytic reduction (SCR) flue gas denitrification technology, as an efficient nitrogen oxide (NOx) control technology, has been widely used in coal-fired power plants. However, due to the load of coal-fired units, variable coal quality, and lack of theoretical guidance for on-site operation, many problems often occur in the SCR flue gas denitrification system during operation, such as catalyst wear, low ammonia utilization rate, and denitrification efficiency that cannot reach the design requirements etc. The flue gas denitrification ammonia injection mixing system is an important part of the selective catalytic reduction (SCR) method. Whether ammonia and flue gas can be mixed stably and uniformly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/56
CPCB01D53/8631B01D2251/2062B01D2258/0283
Inventor 耿宣汪洋王争荣苏军划胡小夫李伟王桦
Owner CHINA HUADIAN ENG
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