CN105289348A - Venturi tube type ammonia mixer - Google Patents
Venturi tube type ammonia mixer Download PDFInfo
- Publication number
- CN105289348A CN105289348A CN201510786581.0A CN201510786581A CN105289348A CN 105289348 A CN105289348 A CN 105289348A CN 201510786581 A CN201510786581 A CN 201510786581A CN 105289348 A CN105289348 A CN 105289348A
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- Prior art keywords
- venturi
- ammonia
- venturi tube
- porous
- plate
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 79
- 239000006185 dispersion Substances 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 17
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- -1 this Chemical compound 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
A provided Venturi tube type ammonia mixer comprises a Venturi tube, an ammonia spraying tube, a circular dispersion baffle plate and a porous dispersion plate group; the Venturi tube possesses a throat part at the position with the smallest cross section area, and the axes of the ammonia spraying tube and the throat part are superposed; the end part of the ammonia spraying tube is an ammonia spraying port; one end of the Venturi tube is an outlet, and the circular dispersion baffle plate is disposed in the outlet and exactly faces the ammonia spraying port; and the outlet of the Venturi tube is connected with a wind tube, and the porous dispersion plate is disposed in the wind tube. The flue gas velocity is improved at the throat part by utilizing the Venturi tube, also ammonia is sprayed into the throat part, a jet flow is formed through cooperation of the high-speed flue gas and ammonia at the outlet of the Venturi tube and is dispersed after bumping the circular dispersion baffle plate; and then the mixed flue gas flows via the porous dispersion plate group and is further repeatedly mixed under the flow-disturbing effect, and ammonia is uniformly dispersed in the flue gas when the mixed gas arrives at the mixer outlet.
Description
Technical field
The present invention relates to ammonia blender manufacturing technology, particularly relate to a kind of venturi-type ammonia blender, belong to denitrating catalyst process equipment manufacturing technology field.
Background technology
Full-scale SCR denitration processing performance evaluation system is a kind of experimental provision for measuring assessment SCR denitration performance indications.Wherein ammonia mixing arrangement is as one of important integral link of system, and its effect evenly spreads among flue gas using the ammonia as reducing agent, to meet the experiment condition of reactor inlet ammonia in flue gas uniform composition dispersion, reaches the accuracy requirement of measurement result.
In prior art, because airduct size in this evaluation system is usually less, shorter from the duct length spray ammonia mouth to reactor inlet, for realizing the dispersed of ammonia in limited mixing apart from interior, therefore need arranging special tubular type ammonia blender.So, need a kind of venturi tube structure in prior art badly and ammonia homodisperse tubular type ammonia mixer structure can be realized in limited distance.
Summary of the invention
The invention provides a kind of venturi-type ammonia blender for making ammonia and flue gas can mix fully, uniformly before entering the reactor in full-scale SCR denitration processing performance evaluation system.
Venturi-type ammonia blender provided by the invention, comprising: Venturi tube, spray ammonia pipe, circular dispersion baffle plate and porous dispersion plate group;
The minimum place of area of section of described Venturi tube is trunnion portion; Described spray ammonia pipe is arranged at described trunnion portion, and the axis of described spray ammonia pipe and the axes coincide in described trunnion portion; The end of described spray ammonia pipe is spray ammonia mouth;
One end of described Venturi tube is outlet, and described circular dispersion baffle plate is arranged in described outlet, and just to described spray ammonia mouth;
The outlet of described Venturi tube is also connected with airduct, and described porous dispersion plate group is arranged in described airduct.
Venturi-type ammonia blender as above, wherein, described porous dispersion plate group comprises: fixed porous plate, and the detachable porous plate of polylith;
Described fixed porous plate is fixed in described airduct, and described fixed porous plate is provided with fixed axis; Axis and the described Venturi axis of described fixed axis coincide;
The detachable porous plate of described polylith is installed on described fixed axis.
Venturi-type ammonia blender as above, wherein, all be arranged in parallel between the detachable porous plate of described polylith.
Venturi-type ammonia blender as above, wherein, the perforate on adjacent two blocks of described detachable porous plates is all not corresponding on the axis direction of described fixed axis.
Venturi-type ammonia blender as above wherein, is Flange joint between described airduct and described Venturi tube.
Venturi-type ammonia blender as above, wherein, the axis perpendicular in described circular dispersion baffle plate and described trunnion portion.
Venturi-type ammonia blender as above, wherein, each described detachable porous plate comprises: disc and sleeve pipe; Described sleeve pipe is arranged at the center of described disc, and described disc is located on described fixed axis by described casing pipe sleeve.
Venturi-type ammonia blender as above, wherein, described circular dispersion baffle plate comprises: circular baffle plate and barrier support;
Described barrier support is fixed on the inwall of described outlet, and described circular baffle plate is fixed on the center of described barrier support.
Venturi-type ammonia blender of the present invention, utilizes Venturi tube to improve flue gas flow rate in trunnion portion, sprays into ammonia simultaneously at this place.High velocity smoke is worked in coordination with ammonia and is formed jet at Venturi tube back segment, and clashes into circular dispersion baffle plate and disperse, in this flue gas and ammonia generation mixed once; Mixed flue gas flows through porous dispersion plate group more afterwards, repeatedly mixes further under flow-disturbing effect, and when arriving mixer outlet place, ammonia has been dispersed among flue gas.
Accompanying drawing explanation
Fig. 1 is the structural representation of the venturi-type ammonia blender of the embodiment of the present invention;
Fig. 2 is the enlarged diagram of circular dispersion baffle plate in Fig. 1;
Fig. 3 is the schematic cross-section of Fig. 2;
Fig. 4 is the enlarged diagram of detachable porous plate in Fig. 1;
Fig. 5 is the schematic cross-section of Fig. 4;
Fig. 6 is the enlarged diagram of fixed porous plate in Fig. 1;
Fig. 7 is the schematic cross-section of Fig. 6.
Detailed description of the invention
As shown in Figure 1, venturi-type ammonia blender provided by the invention, comprising: Venturi tube 1, spray ammonia pipe 2, circular dispersion baffle plate 3 and porous dispersion plate group.Venturi tube 1 comprises trunnion portion 10 and outlet 11.The minimum place of area of section of described Venturi tube 1 is trunnion portion 10; Described spray ammonia pipe 2 is arranged at described trunnion portion 10, and the axis of described spray ammonia pipe 2 and the axes coincide in described trunnion portion 10; The end of described spray ammonia pipe 2 is spray ammonia mouth.Spray ammonia pipe 2 is generally positioned on the axis of Venturi tube 1, and is positioned at the center in trunnion portion 10.In the venturi-type ammonia blender of the present embodiment, in order to promote dispersion effect, the general axis perpendicular with described trunnion portion 10 of described circular dispersion baffle plate 3.
One end of described Venturi tube 1 is outlet 11, and neck one end of Venturi tube 1 is mixer entrance A.Described circular dispersion baffle plate 3 is arranged in described outlet 11, and just to described spray ammonia mouth; Certain, dispersion baffle plate has perforate or space.
The outlet of described Venturi tube 1 is also connected with airduct 6, and described porous dispersion plate group is arranged in described airduct 6.Generally, as shown in Figure 6 and Figure 7, described porous dispersion plate group comprises: fixed porous plate 5, and the detachable porous plate 4 of polylith; Described fixed porous plate 5 is fixed in described airduct 6, and described fixed porous plate 5 is provided with fixed axis 52; The axis of described fixed axis 52 and described Venturi tube 1 axes coincide; The detachable porous plate of described polylith 4 is installed on described fixed axis 52.Fixed porous plate 5 also comprises fixed disk 51, and fixed axis 52 is arranged on fixed disk 51; The edge of fixed disk 51 is fixedly connected with airduct 6.
In addition, Flange joint is generally between described airduct 6 and described Venturi tube 1.
Venturi-type ammonia blender of the present invention, in use, flue gas is entered by mixer entrance A, ammonia entered by B and by be arranged in Venturi tube trunnion portion spray ammonia pipe spray after, first clash into circular dispersion baffle plate, then realize after porous dispersion plate group and fully the mixing of flue gas.Concrete, because spray ammonia pipe is arranged at Venturi tube trunnion portion, spray ammonia mouth is positioned at axis place of trunnion portion, and spray ammonia direction is consistent with flue gas flow direction, circular dispersion baffle arrangement in for spraying ammonia mouth position so that disperse after ammonia impingement baffles.Porous dispersion plate group is arranged in circular dispersion baffle plate downstream, and flue gas mixes after flowing through porous dispersion plate group with ammonia, is finally discharged by mixer outlet C.
Venturi-type ammonia blender of the present invention, owing to adopting single-point spray ammonia form, structure is simply easy to control and regulation.And the jet that venturi is formed adds that circular plate washer disperses, and be aided with the dispersion of porous plate flow-disturbing, multiple dispersal mechanism can guarantee the ammonia mixed effect realizing efficient stable.In addition this apparatus structure is compact, and is connected with airduct by multistage form of flanges, and porous dispersion plate adopts Demountable, is easy to dismounting and maintenance.
At the venturi-type ammonia blender of the present embodiment, further, all be arranged in parallel between the detachable porous plate 4 of described polylith.More preferred, the perforate on adjacent two blocks of described detachable porous plates 4 is all not corresponding on the axis direction of described fixed axis 52.Because the detachable porous plate of polylith is separated by certain spacing to each other, flue gas mixes after flowing through porous plate with ammonia.Meanwhile, in detachable porous plate, the position, duct of adjacent plate body is interlaced, and namely adjacent plate body does not form through hole in same pipeline section position.Further ensure the Homogeneous phase mixing of flue gas like this, further increase mixed effect.
As shown in Figure 5 and Figure 6, in embodiments of the present invention, each described detachable porous plate 4 comprises: disc 41 and sleeve pipe 42; Described sleeve pipe 42 is arranged at the center of described disc 41, is generally perpendicular to disc 41; And described disc 41 is set on described fixed axis 52 by described sleeve pipe 42.Greatly facilitate the installation of detachable porous plate 4 like this.
As shown in Figures 2 and 3, in embodiments of the present invention, described circular dispersion baffle plate 3 comprises: circular baffle plate 31 and barrier support 32; Described barrier support 32 is fixed on the inwall of described outlet 11, and described circular baffle plate 31 is fixed on the center of described barrier support 32.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a venturi-type ammonia blender, is characterized in that, comprising: Venturi tube, spray ammonia pipe, circular dispersion baffle plate and porous dispersion plate group;
The minimum place of area of section of described Venturi tube is trunnion portion; Described spray ammonia pipe is arranged at described trunnion portion, and the axis of described spray ammonia pipe and the axes coincide in described trunnion portion; The end of described spray ammonia pipe is spray ammonia mouth;
One end of described Venturi tube is outlet, and described circular dispersion baffle plate is arranged in described outlet, and just to described spray ammonia mouth;
The outlet of described Venturi tube is also connected with airduct, and described porous dispersion plate group is arranged in described airduct.
2. venturi-type ammonia blender according to claim 1, is characterized in that, described porous dispersion plate group comprises: fixed porous plate, and the detachable porous plate of polylith;
Described fixed porous plate is fixed in described airduct, and described fixed porous plate is provided with fixed axis; Axis and the described Venturi axis of described fixed axis coincide;
The detachable porous plate of described polylith is installed on described fixed axis.
3. venturi-type ammonia blender according to claim 2, is characterized in that, all be arranged in parallel between the detachable porous plate of described polylith.
4. venturi-type ammonia blender according to claim 3, is characterized in that, the perforate on adjacent two blocks of described detachable porous plates is all not corresponding on the axis direction of described fixed axis.
5., according to the arbitrary described venturi-type ammonia blender of claim 1-4, it is characterized in that, be Flange joint between described airduct and described Venturi tube.
6., according to the arbitrary described venturi-type ammonia blender of claim 1-4, it is characterized in that, the axis perpendicular in described circular dispersion baffle plate and described trunnion portion.
7. venturi-type ammonia blender according to claim 2, is characterized in that, each described detachable porous plate comprises: disc and sleeve pipe; Described sleeve pipe is arranged at the center of described disc, and described disc is located on described fixed axis by described casing pipe sleeve.
8., according to the arbitrary described venturi-type ammonia blender of claim 1-4, it is characterized in that, described circular dispersion baffle plate comprises: circular baffle plate and barrier support;
Described barrier support is fixed on the inwall of described outlet, and described circular baffle plate is fixed on the center of described barrier support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786581.0A CN105289348A (en) | 2015-11-16 | 2015-11-16 | Venturi tube type ammonia mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786581.0A CN105289348A (en) | 2015-11-16 | 2015-11-16 | Venturi tube type ammonia mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105289348A true CN105289348A (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510786581.0A Pending CN105289348A (en) | 2015-11-16 | 2015-11-16 | Venturi tube type ammonia mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105289348A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180464A (en) * | 2019-06-28 | 2019-08-30 | 邢台旭阳化工有限公司 | Phthalic anhydride gas phase naphthalene feeder |
| CN111826173A (en) * | 2019-10-24 | 2020-10-27 | 中国船舶重工集团公司第七一一研究所 | Reaction device, production system and production method for preparing low-carbon olefin |
| CN113599970A (en) * | 2021-09-02 | 2021-11-05 | 洛阳万基炭素有限公司 | Adsorption device for asphalt smoke tar black method |
| CN114432851A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | SO removal of flue gas3System and method |
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| JP2011121038A (en) * | 2009-12-10 | 2011-06-23 | Masao Uratani | Static mixer |
| CN201988343U (en) * | 2011-03-15 | 2011-09-28 | 天津力冠能源科技有限公司 | Ammonia gas and air Venturi mixer |
| CN202277811U (en) * | 2011-10-08 | 2012-06-20 | 中国成达工程有限公司 | Ammonia and air mixing device |
| CN202844901U (en) * | 2012-09-29 | 2013-04-03 | 上海门普来新材料股份有限公司 | Porous jet mixer |
| CN103846026A (en) * | 2014-02-10 | 2014-06-11 | 西安交通大学 | Venturi mixer with adjustable shrinkage hole on throat |
| CN205109431U (en) * | 2015-11-16 | 2016-03-30 | 国电科学技术研究院 | Venturi formula ammonia blender |
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2015
- 2015-11-16 CN CN201510786581.0A patent/CN105289348A/en active Pending
Patent Citations (6)
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| JP2011121038A (en) * | 2009-12-10 | 2011-06-23 | Masao Uratani | Static mixer |
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Non-Patent Citations (1)
| Title |
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| 张国忠主编: "现代混凝土泵车及施工应用技术", 中国建材工业出版社, pages: 147 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180464A (en) * | 2019-06-28 | 2019-08-30 | 邢台旭阳化工有限公司 | Phthalic anhydride gas phase naphthalene feeder |
| CN111826173A (en) * | 2019-10-24 | 2020-10-27 | 中国船舶重工集团公司第七一一研究所 | Reaction device, production system and production method for preparing low-carbon olefin |
| CN114432851A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | SO removal of flue gas3System and method |
| CN113599970A (en) * | 2021-09-02 | 2021-11-05 | 洛阳万基炭素有限公司 | Adsorption device for asphalt smoke tar black method |
| CN113599970B (en) * | 2021-09-02 | 2023-11-21 | 洛阳万基炭素有限公司 | Asphalt smoke and tar black method adsorption device |
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