CN103111224A - Flash mixer - Google Patents
Flash mixer Download PDFInfo
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- CN103111224A CN103111224A CN2012104562992A CN201210456299A CN103111224A CN 103111224 A CN103111224 A CN 103111224A CN 2012104562992 A CN2012104562992 A CN 2012104562992A CN 201210456299 A CN201210456299 A CN 201210456299A CN 103111224 A CN103111224 A CN 103111224A
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- urceolus
- flash mixer
- deflector
- inner core
- flue gas
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Abstract
The invention provides a flash mixer. The flash mixer is characterized by comprising an outer cylinder, an inner cylinder and a guide plate, wherein the outer cylinder is arranged on the periphery of the inner cylinder, and the outer cylinder is connected with the inner cylinder through the guide plate. The flash mixer provided by the invention has the advantages that the structure is reasonable, the high-temperature hot air and clean smoke are uniformly mixed as soon as possible, the expensive high-temperature resistant antirot substances are reduced, and the clean flue gas after heating is discharged at a uniform temperature.
Description
Technical field
The present invention is mainly used in the wet desulfurization system of thermal power plant, adopt in the technique of a kind of high-temperature hot air by the clean flue gas of direct Hybrid Heating low temperature, be mainly used in realizing accelerating two kinds of gaseous material rapid mixing, guarantee to realize the rapid mixing of two kinds of gaseous materials in shorter time, shorter distance.
Background technology
In recent years, along with the attention of country to environmental protection, fired power generating unit adopts Wet Limestone-gypsum sulfur removal technology to remove the SO in the boiler emission flue gas
2The wet desulfurization system absorption tower clean flue-gas temperature of outlet has at present clean flue gas discharging and does not heat direct discharging dual mode 50 ℃ of left and right.Heating can make clean flue-gas temperature raise, and improves the rising height of flue gas, be conducive to pollutant diffusion, avoid the generation of misty rain phenomenon.Do not heat corrosion and the chimney that can shine into back-end ductwork and occur " gypsum rain " on every side, affect surrounding enviroment and resident living.
At present clean flue gas heats the following several mode that mainly contains again:
⑴ adopt gas-gas heat exchanger, i.e. GGH.It is a kind of of heat accumulating type heating.In wet desulfurization system, with it, undesulfured flue gas (being generally 130～150 ℃) is removed to heat the flue gas of desulfurization, generally be heated to 80 ℃, then enter smoke stack emission.
⑵ vapour-hot-air heater.Namely with the clean flue gas of vapours heating, be characterized in that design and running is simple, initial cost is little, but operating cost is higher, is prone to burn into pipe adventitious deposit thing and affects heat transfer effect.Domestic seldom power plant adopts this heater.
⑶ bypass reheat.During the flue gas partial desulfurization, the not former hot flue gas of desulfurization and the clean flue gas dual disposal of FGD, mixed flue-gas temperature depends on bypass exhaust gas volumn and flue gas relative temperature.Along with environmental requirement improves, at present domestic seldom employing.
⑷ boiler high temperature air heat.Utilize boiler island hot blast allowance, draw high temperature air, natural pressure reduction by steam generator system and FGD system, do not increase any auxiliary power, heat air delivery directly mixes with the clean flue gas of the low temperature after desulfurization to the absorption tower outlet of FGD system, does not adopt any heat-transfer surface, eliminated because there being the problems such as corrosion that heat-transfer surface occurs and fouling, be applied in part thermal power plant at present.
In the technique that adopts the boiler hot air heating, due to hot blast temperature up to more than 250 ℃, anti-corrosion material in clean flue and chimney bears maximum temperature and is no more than 170 ℃, therefore need to guarantee that high-temperature hot-air and clean flue gas mix as early as possible, reduce the use of adopting expensive high-temperature resistant anti-corrosive material, after heating, clean flue-gas temperature is discharged uniformly.But in above-mentioned several modes, effect is all undesirable.
Summary of the invention
Goal of the invention: the invention provides a kind of flash mixer, its objective is high-temperature hot-air and the inhomogeneous problem of clean flue gas mixing in solution thermal power plant wet desulfurization system in the past.
Technical scheme: the present invention is achieved through the following technical solutions:
A kind of flash mixer is characterized in that: this flash mixer comprises urceolus, inner core and deflector; Urceolus is arranged on the periphery of inner core, and urceolus is connected by deflector with inner core.
Urceolus and inner core are cylinder-like structure, and inner diameter of steel flue is 1/3～1/4 of urceolus diameter.
The urceolus of flash mixer and the axial length of inner core are 0.5m～1m.
Deflector is 6～8.
The rectangular triangle build of deflector, one of them inclined-plane of deflector and the axial direction of urceolus are 60 ° of angles, and edged surface is identical with the urceolus axial direction always, and another right angle face of deflector and the outer section of inner/outer tube are in one plane.
Advantage and effect:
The invention provides a kind of flash mixer, it is characterized in that: this flash mixer comprises urceolus, inner core and deflector; Urceolus is arranged on the periphery of inner core, and urceolus is connected by deflector with inner core.
The present invention is rational in infrastructure, and can guarantee that high-temperature hot-air and clean flue gas mix as early as possible, reduces the use of adopting expensive high-temperature resistant anti-corrosive material, and after heating, clean flue-gas temperature is discharged uniformly.
Description of drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of opposite side of the present invention.
The specific embodiment:The present invention will be further described below in conjunction with accompanying drawing:
The invention provides a kind of flash mixer, it is characterized in that: this flash mixer comprises urceolus 1, inner core 2 and deflector 3; Urceolus 1 is arranged on the periphery of inner core 2, and urceolus 1 is connected by deflector 3 with inner core 2.
Urceolus 1 and inner core 2 are cylinder-like structure, and inner diameter of steel flue is 1/3～1/4 of urceolus diameter.
The urceolus 1 of flash mixer and the axial length of inner core 2 are 0.5m～1m.
The rectangular triangle build of deflector, namely triangular prism shaped, and the cross section of this triangular prism is right angled triangle, one of them inclined-plane of deflector and the axial direction of urceolus are 60 ° of angles, what make the direction of Air Flow and inner/outer tube axially is 60 ° of angles, one right-angle side is identical with the urceolus axial direction, and another right-angle side of deflector and the outer section of inner/outer tube are in one plane.
In the system that adopts the clean flue gas of high temperature air heating, because there are certain deviation in two kinds of gaseous medium temperature, density, if mix inequality, will cause damage to the inner wall of stack anti-corrosion material, therefore adopt the port at hot-flow flue to adopt this patented technology, strengthen the mixing of two kinds of gaseous mediums.
The main function of flash mixer of the present invention is as follows:
⑴ the air flow condition in inner core is that orthoscopic flows, and the Air Flow in urceolus is due to the effect that is subject to flow deflector, flow regime is rotary and flows, two strands of air-flows are different conditions and leave blender, contact with clean flue gas, increased the contact area of hot blast with clean flue gas, heat exchange is more abundant.
⑵ the one side of deflector is 60 ° of directions arranges, makes the hot blast that leaves blender have stronger tangential velocity, clean flue gas disturbance is mixed strengthen.
⑶ because the hot-air rotation spray penetrates flash mixer, forms clean smoke backflow district at mixer outlet, makes hot-air and clean flue gas rapid mixing.
⑷ the hot air temperature in blender is up to 300 ℃, the clean flue-gas temperature of absorption tower outlet is only 50 ℃, and by the effect of flash mixer, two kinds of gaseous mediums are before entering chimney, the mixed clean flue-gas temperature deviation of section is less than 2 ℃, realizes fully mixing of hot-air and clean flue gas.
The flash mixer effect sees the following form:
Boiler load is under 70% and 100% nominal output, keeping under the boiler accidental conditions, extract under the operating mode of hot secondary air regulation baffle plate standard-sized sheet hot secondary air flow is measured respectively, the measuring position is on the horizontal hot-flow flue of dust remover roof, and clean flue-gas temperature point position is positioned on the chimney gas approach.Experimental measurement the results are shown in Table 1.Can find out by result of the test, two clean flue-gas temperatures of operating mode lower stack and design load be deviation-0.4 ℃ and-0.9 ℃ respectively, can satisfy the designing requirement of extracting the clean flue gas of Hot-blast Heating, the flash mixer design effect is good, realize hot-air and clean flue gas quick, fully mix.
Claims (5)
1. flash mixer, it is characterized in that: this flash mixer comprises urceolus (1), inner core (2) and deflector (3); Urceolus (1) is arranged on the periphery of inner core (2), and urceolus (1) is connected by deflector (3) with inner core (2).
2. flash mixer according to claim 1, it is characterized in that: urceolus (1) and inner core (2) are cylinder-like structure, and inner diameter of steel flue is 1/3～1/4 of urceolus diameter.
3. flash mixer according to claim 2, it is characterized in that: the axial length of the urceolus of flash mixer (1) and inner core (2) is 0.5m～1m.
4. flash mixer according to claim 1, it is characterized in that: deflector (3) is 6～8.
5. flash mixer according to claim 1, it is characterized in that: the rectangular triangle build of deflector, one of them inclined-plane of deflector and the axial direction of urceolus are 60 ° of angles, edged surface is identical with the urceolus axial direction always, and another right angle face of deflector and the outer section of inner/outer tube are in one plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104562992A CN103111224A (en) | 2012-11-14 | 2012-11-14 | Flash mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104562992A CN103111224A (en) | 2012-11-14 | 2012-11-14 | Flash mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103111224A true CN103111224A (en) | 2013-05-22 |
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ID=48409635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104562992A Pending CN103111224A (en) | 2012-11-14 | 2012-11-14 | Flash mixer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103111224A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240014A (en) * | 2013-05-30 | 2013-08-14 | 中冶华天南京工程技术有限公司 | Flue gas mixing device |
| CN105597605A (en) * | 2016-02-22 | 2016-05-25 | 宁夏朗盛精密制造技术有限公司 | Anti-precipitation stirring barrel |
| CN110333326A (en) * | 2019-08-07 | 2019-10-15 | 马鞍山钢铁股份有限公司 | A kind of sintering circulating flue gas simulation system and experimental method |
Citations (6)
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|---|---|---|---|---|
| EP0663236A1 (en) * | 1994-01-12 | 1995-07-19 | Haldor Topsoe A/S | Method and apparatus for mixing gases |
| CN1917937A (en) * | 2004-02-16 | 2007-02-21 | 风神有限公司 | Mixing element and static fluid mixer using the same |
| CN201565262U (en) * | 2009-12-17 | 2010-09-01 | 航天环境工程有限公司 | SCR denitration vertical mixing-increaser |
| CN101821497A (en) * | 2007-08-10 | 2010-09-01 | 京特·克劳斯 | Flow energy installation |
| CN101903704A (en) * | 2007-12-19 | 2010-12-01 | J·勒梅 | Device and method for stabilising the pressure and the flow of a gaseous mixture supplied to a surface-combustion cylindrical burner |
| CN102451625A (en) * | 2010-10-15 | 2012-05-16 | 中国石油化工股份有限公司 | Self-suction gas-liquid mixing impeller |
-
2012
- 2012-11-14 CN CN2012104562992A patent/CN103111224A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0663236A1 (en) * | 1994-01-12 | 1995-07-19 | Haldor Topsoe A/S | Method and apparatus for mixing gases |
| CN1917937A (en) * | 2004-02-16 | 2007-02-21 | 风神有限公司 | Mixing element and static fluid mixer using the same |
| CN101821497A (en) * | 2007-08-10 | 2010-09-01 | 京特·克劳斯 | Flow energy installation |
| CN101903704A (en) * | 2007-12-19 | 2010-12-01 | J·勒梅 | Device and method for stabilising the pressure and the flow of a gaseous mixture supplied to a surface-combustion cylindrical burner |
| CN201565262U (en) * | 2009-12-17 | 2010-09-01 | 航天环境工程有限公司 | SCR denitration vertical mixing-increaser |
| CN102451625A (en) * | 2010-10-15 | 2012-05-16 | 中国石油化工股份有限公司 | Self-suction gas-liquid mixing impeller |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240014A (en) * | 2013-05-30 | 2013-08-14 | 中冶华天南京工程技术有限公司 | Flue gas mixing device |
| CN103240014B (en) * | 2013-05-30 | 2015-09-02 | 中冶华天南京工程技术有限公司 | Flue gas mixing arrangement |
| CN105597605A (en) * | 2016-02-22 | 2016-05-25 | 宁夏朗盛精密制造技术有限公司 | Anti-precipitation stirring barrel |
| CN105597605B (en) * | 2016-02-22 | 2018-06-22 | 宁夏朗盛精密制造技术有限公司 | Anti- precipitation agitator |
| CN110333326A (en) * | 2019-08-07 | 2019-10-15 | 马鞍山钢铁股份有限公司 | A kind of sintering circulating flue gas simulation system and experimental method |
| CN110333326B (en) * | 2019-08-07 | 2024-04-16 | 马鞍山钢铁股份有限公司 | Sintering circulation flue gas simulation system and experimental method |
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Application publication date: 20130522 |