CN104888604A - Tangential cyclone type ammonium hydroxide vaporizer - Google Patents
Tangential cyclone type ammonium hydroxide vaporizer Download PDFInfo
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- CN104888604A CN104888604A CN201510279521.XA CN201510279521A CN104888604A CN 104888604 A CN104888604 A CN 104888604A CN 201510279521 A CN201510279521 A CN 201510279521A CN 104888604 A CN104888604 A CN 104888604A
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- hot air
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Abstract
The invention discloses a tangential cyclone type ammonium hydroxide vaporizer and belongs to the technical filed of environment protection equipment. The vaporizer comprises a cylinder body, a hot air inlet, an ammonium hydroxide spray gun and a hot air outlet, wherein the hot air inlet is arranged at the upper part of the cylinder body, the hot air outlet is arranged at the lower part of the cylinder body; the ammonium hydroxide spray gun is fixedly arranged in the cylinder body; the hot air inlet is formed in the tangential line position of the excircle of the cylinder body. Compared with the prior art, the tangential cyclone type ammonium hydroxide vaporizer has the characteristics that hot air enters the cylinder body in a tangential rotation manner and forms strong thermal medium exchange with ammonium hydroxide fog drops, the turbulence of the inside hot air is greatly increased so that the hot air and the ammonium hydroxide fog drops are in sufficient contact and the drying and evaporating efficiency of the ammonium hydroxide fog drops are improved; meanwhile, the stay time of the hot air in a reactor is prolonged, the reactor height is lowered and raw materials are saved.
Description
Technical field
The present invention relates to a kind of chemical industry and prepare liquid vaporising device, particularly a kind of ammoniacal liquor vaporizer of tangential swirl blowing-type.
Background technology
Selective catalytic reduction flue gas denitration (SCR) is that a kind of operation controls the mature technology simple, denitration efficiency is high.Amino reductive, under catalyst action, optionally generates N2 and H2O with the nitrogen oxide generation reduction reaction in flue gas, thus removes the nitrogen oxide in flue gas, realize pollution reduction.
Current denitrification reducing agent mainly contains liquefied ammonia, urea, ammoniacal liquor three kinds.Wherein, liquefied ammonia is the Class B dangerous material of national regulation, and its transport, storage are all subject to strict restriction; Urea is nontoxic without dangerous, but urea pyrolysis needs to consume a large amount of heats, and there is the problem such as deliquescence and easy Crystallization Plugging; Ammoniacal liquor properties between above two kinds of reducing agents, but has the power plant of ammoniacal liquor accessory substance for surrounding, adopt ammoniacal liquor to have more advantage as denitrification reducing agent.
In prior art, use ammoniacal liquor as reducing agent ammonia, must first ammoniacal liquor be vaporized.Current ammoniacal liquor vapourizing unit many employings single flow, i.e. heat smoke and ammoniacal liquor droplet flow the mode of hybrid radial by evaporimeter.There is in tower the shortcomings such as hot blast perturbation is little, hot blast is short at dwell time in the tower, hot blast skewness in this vaporizer, require higher to height for reactor, in ammoniacal liquor vaporizer engineering application example, the height of vaporizer often needs more than 4m, not only increase investment construction cost, bring difficulty also to the enforcement of the denitration improvement project of some narrow space simultaneously.
Summary of the invention
The technical issues that need to address of the present invention are for above-mentioned the deficiencies in the prior art, and provide a kind of and can increase ammoniacal liquor and air contact surfaces amasss, makes full use of the tangential swirl air blast vaporizer of internal tank volume.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of tangential swirl type ammoniacal liquor vaporizer, comprises cylindrical shell, hot-wind inlet, ammonia water spray gun and hot-blast outlet; Described hot-wind inlet is positioned at the top portion of cylindrical shell, and described hot-blast outlet is positioned at cylindrical shell bottom, and described ammonia water spray gun is positioned at cylindrical shell internal fixtion and arranges; Described hot-wind inlet is nozzle structure, and the air-flow entering hot-wind inlet is positioned at the tangent position of close cylindrical shell cylindrical.
as further preferred version, described hot-blast outlet is conduction orientation nozzle structure down, and the internal diameter of hot-blast outlet diminishes from top to bottom gradually.
as further preferred version, the tube wall of hot-blast outlet is 30 °-60 ° at the angle of inclination that vertical direction is formed.
as further preferred version, described ammonia water spray gun is arranged near hot-wind inlet.
beneficial effect:
Compared with prior art, a kind of tangential swirl type ammoniacal liquor vaporizer of the present invention, mainly through hot blast is tangentially entered vaporizer cylindrical shell from the side, in cylindrical shell, form spiral air flow, considerably increase the perturbation of inner hot blast, make itself and ammoniacal liquor droplet form strong caloic to exchange, abundant contact is so that evenly, improve the dry evaporation efficiency of ammoniacal liquor droplet, extend the time of staying of hot blast in reactor simultaneously, reduce height for reactor, save raw material; The internal diameter of hot-blast outlet diminishes from top to bottom gradually, adds the contact surface of cylindrical shell and ammoniacal liquor liquid, can increase the accumulation time of ammoniacal liquor liquid in cylinder like this, fully contacts with air and evaporates; Ammonia water spray gun is arranged near hot-wind inlet; Hot-wind inlet wind speed is comparatively large, is conducive to the rapid diffusive evaporation of atomized ammonia.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is air-flow guiding figure in the present invention;
Wherein, 1-cylindrical shell, 2-hot-wind inlet, 3-ammonia water spray gun, 4-hot-blast outlet.
Detailed description of the invention
The preferred technical solution of the present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of tangential swirl type ammoniacal liquor vaporizer of the present invention, comprises cylindrical shell 1, hot-wind inlet 2, ammonia water spray gun 3 and hot-blast outlet 4;
Described hot-wind inlet 2 is generally positioned at the top portion of cylindrical shell 1, need above ammonia water spray gun 3, described hot-blast outlet 4 is positioned at cylindrical shell 1 bottom, but hot-wind inlet 2 also can be arranged on cylindrical shell 1 bottom, hot-blast outlet 4 also can be arranged on cylindrical shell 1 top, determines according to actual working environment;
Described ammonia water spray gun 3 is positioned at cylindrical shell 1 internal fixtion and arranges, ammonia water spray gun 3 is generally and is welded on an inwall place or is lifted on an inner top in cylindrical shell 1, cylinder outside is provided with ammoniacal liquor input pipe, ammonia water spray gun 3 is arranged near hot-wind inlet 2, increase the time that ammoniacal liquor liquid is lowered through air in cylinder, reach and fully contact with air; Described hot-wind inlet 2 is nozzle structure, and the air-flow that extraneous air can be concentrated to enter in cylinder leads, and avoid air-flow to enter in cylinder and do not form spiral air flow, hot-wind inlet 2, at the tangent position of cylindrical shell 1 cylindrical, ensure that air-flow curls up the flow direction along cylinder inwall in cylinder.
Described hot-blast outlet 4 is conduction orientation nozzle structure down, and the internal diameter of hot-blast outlet 4 diminishes from top to bottom gradually, and the tube wall of hot-blast outlet 4 is 30 °-60 ° at the angle of inclination that vertical direction is formed, and reduces the bore flowing out the mouth of pipe, centralized collection liquid.
Described ammonia water spray gun 3 is arranged near hot-wind inlet 2; Hot-wind inlet wind speed is comparatively large, is conducive to the rapid diffusive evaporation of atomized ammonia.
Introduce on a small quantity from the high-temperature gas of boiler, such as boiler smoke or boiler one/Secondary Air decompose the thermal source of vaporization as ammoniacal liquor, it is inner that hot blast tangentially enters cylindrical shell 1 from hot-wind inlet 2 along vaporizer side, form spiral down current, ammonia water spray gun 3 is arranged in the position near hot-wind inlet 2 in cylindrical shell 1.Under hot blast eddy flow drives, ammoniacal liquor droplet and hot blast mix strongly, are mixed by heat vaporized one-tenth ammonia and steam with the gas uniform of heat.Three's gaseous mixture flows out from hot-blast outlet 4 subsequently, is introduced in follow-up denitration reaction district.
For vaporization thermal source, hot blast temperature should be greater than 250 DEG C, and the gaseous mixture speed of ammonia water spray gun 3 should control at about 0.3 ~ 1m/s.
Ammonia water spray gun should adopt 316 or 316L material make, and easy access and replacing.
For reducing the loss of heat in vaporescence, vaporizer outside should arrange heat-insulation layer.
The foregoing is only the present invention's example, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equal replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a tangential swirl type ammoniacal liquor vaporizer, is characterized in that: comprise cylindrical shell (1), hot-wind inlet (2), ammonia water spray gun (3) and hot-blast outlet (4); Described hot-wind inlet (2) is positioned at cylindrical shell (1) top portion, and described hot-blast outlet (4) is positioned at cylindrical shell (1) bottom, and described ammonia water spray gun (3) is positioned at cylindrical shell (1) internal fixtion and arranges; Described hot-wind inlet (2) is nozzle structure, and the air-flow entering hot-wind inlet (2) is positioned at the tangent position of close cylindrical shell (1) cylindrical.
2. a kind of tangential swirl type ammoniacal liquor vaporizer according to claim 1, is characterized in that: described hot-blast outlet (4) diminishes from top to bottom gradually for conduction orientation nozzle structure down, the internal diameter of hot-blast outlet (4).
3. a kind of tangential swirl type ammoniacal liquor vaporizer according to claim 2, is characterized in that: the tube wall of hot-blast outlet (4) is 30 °-60 ° at the angle of inclination that vertical direction is formed.
4. a kind of tangential swirl type ammoniacal liquor vaporizer according to claim 2, is characterized in that: described ammonia water spray gun (3) is arranged near hot-wind inlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510279521.XA CN104888604A (en) | 2015-05-28 | 2015-05-28 | Tangential cyclone type ammonium hydroxide vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510279521.XA CN104888604A (en) | 2015-05-28 | 2015-05-28 | Tangential cyclone type ammonium hydroxide vaporizer |
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| Publication Number | Publication Date |
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| CN104888604A true CN104888604A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510279521.XA Pending CN104888604A (en) | 2015-05-28 | 2015-05-28 | Tangential cyclone type ammonium hydroxide vaporizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634385A (en) * | 2021-07-12 | 2021-11-12 | 中国人民解放军国防科技大学 | Vortex spraying atomization device |
| CN114642890A (en) * | 2020-12-18 | 2022-06-21 | 中核四0四有限公司 | UO prepared by uranyl nitrate atomization drying pyrolysis denitration3Hot air distribution device |
| CN110065954B (en) * | 2019-05-22 | 2023-12-01 | 湖南省约伯能源科技有限公司 | Ammonia gas generating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106813A (en) * | 2000-09-29 | 2002-04-10 | Kawasaki Heavy Ind Ltd | Burner for low calorie gas combustion |
| DE102007015537A1 (en) * | 2007-03-30 | 2008-10-02 | Siemens Ag | Burner for gasification unit including ring channel (2) for introduction of oxidizing agent useful in coal gasification reactors permits alteration in number of swirling flows without removing burner from reactor |
| CN204746101U (en) * | 2015-05-28 | 2015-11-11 | 江苏中顺节能科技有限公司 | Tangential cyclone -type aqueous ammonia vaporizer |
-
2015
- 2015-05-28 CN CN201510279521.XA patent/CN104888604A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106813A (en) * | 2000-09-29 | 2002-04-10 | Kawasaki Heavy Ind Ltd | Burner for low calorie gas combustion |
| DE102007015537A1 (en) * | 2007-03-30 | 2008-10-02 | Siemens Ag | Burner for gasification unit including ring channel (2) for introduction of oxidizing agent useful in coal gasification reactors permits alteration in number of swirling flows without removing burner from reactor |
| CN204746101U (en) * | 2015-05-28 | 2015-11-11 | 江苏中顺节能科技有限公司 | Tangential cyclone -type aqueous ammonia vaporizer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110065954B (en) * | 2019-05-22 | 2023-12-01 | 湖南省约伯能源科技有限公司 | Ammonia gas generating device |
| CN114642890A (en) * | 2020-12-18 | 2022-06-21 | 中核四0四有限公司 | UO prepared by uranyl nitrate atomization drying pyrolysis denitration3Hot air distribution device |
| CN113634385A (en) * | 2021-07-12 | 2021-11-12 | 中国人民解放军国防科技大学 | Vortex spraying atomization device |
| CN113634385B (en) * | 2021-07-12 | 2022-04-01 | 中国人民解放军国防科技大学 | Vortex spraying atomization device |
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Application publication date: 20150909 |