CN105664747B - A kind of static mixer for urea seeding hydrolysis - Google Patents
A kind of static mixer for urea seeding hydrolysis Download PDFInfo
- Publication number
- CN105664747B CN105664747B CN201610170314.5A CN201610170314A CN105664747B CN 105664747 B CN105664747 B CN 105664747B CN 201610170314 A CN201610170314 A CN 201610170314A CN 105664747 B CN105664747 B CN 105664747B
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- inner cylinder
- section
- blender
- outlet section
- wind
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
A kind of static mixer for urea seeding hydrolysis, the blender contain blender inner cylinder, blender outer barrel, spiral stream guidance section, mixing chamber and mixer outlet section；Blender inner cylinder includes dilution wind inlet straight section, inner cylinder wind outlet section and inner cylinder closed section along airflow direction successively；Spiral stream guidance section is arranged between inner cylinder wind outlet section and mixing chamber；Axially disposed multiple rows of air-out aperture on the wall of inner cylinder wind outlet section；Ammonia entrance is provided with the blender outer tube wall close to inner cylinder wind outlet section front end.The static mixer not only has simple in construction, the advantages that pressure drop is smaller, and ammonia and air can be sufficiently mixed, and because inner cylinder is connected with outer barrel by flange, convenient disassembly, therefore be easy to safeguard and overhaul.
Description
Technical field
The present invention relates to gas mixing apparatus, ammonia, air in more particularly to a kind of thermal power plant gametic fertility system
Static mixing device.
Background technology
China's main electric power is supplied as coal-fired thermal power generation, and oxynitrides NOx caused by fire coal be cause optical haze and
Acid rain major pollutant, the Main Means for controlling NOx emission are denitrating flue gas, in the denitrating technique of numerous flue gases, selection
Property catalysis reduction (SCR) be efficiency highest, a kind of and method that technology and technique are most ripe, at present, the most frequently used SCR skills
Art is based in the presence of metallic catalyst, and the NOx in flue gas is reduced into N using ammonia2And H2O.In SCR denitration system
In, it is an important factor for influenceing SCR denitration efficiency that whether ammonia and air, which can be well mixed, so to ammonia, air
Blender requires very high.
The species of blender is relatively more at present, but mostly has that blender pressure drop is larger, mixture homogeneity is poor, complicated
And safeguard the defects of inconvenient.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art to exist, there is provided a kind of to be used for what urea seeding hydrolyzed
Static mixer, make it have small pressure drop, ammonia and air and be well mixed, and it is simple in construction the features such as.
Technical scheme is as follows：
A kind of static mixer for urea seeding hydrolysis, it is characterised in that：The blender contains blender inner cylinder, mixed
Clutch outer barrel, spiral stream guidance section, mixing chamber and mixer outlet section；The both ends of blender outer barrel pass through flange and blender respectively
Inner cylinder is fixedly connected with mixer outlet section；Blender inner cylinder includes dilution wind inlet straight section successively along airflow direction, inner cylinder goes out
Wind section and inner cylinder closed section；Axially disposed multiple rows of air-out aperture on the wall of inner cylinder wind outlet section, it is circumferentially uniform often to arrange aperture
Arrangement；Ammonia entrance is provided with the blender outer tube wall close to inner cylinder wind outlet section front end, spiral stream guidance section is arranged on inner cylinder and gone out
Between wind section and mixing chamber, the spiral stream guidance section is made up of the spiral deflector being arranged on outer tube inner wall face, and described is interior
In the cavity of cylinder closed section insertion spiral stream guidance section.
In above-mentioned technical proposal, blender outer barrel caliber is 70~90mm；Dilute the caliber of wind inlet straight section for 40~
60mm, length are 250~300mm；The length of inner cylinder wind outlet section is 100~120mm, and caliber is equal with dilution wind inlet straight section；
The caliber of inner cylinder closed section is 25~35mm, and spiral stream guidance segment length is 160~180mm；The length of mixing chamber be 120~
140mm。
Preferably, the length of inner cylinder closed section is equal with spiral stream guidance segment length；Mixer outlet section caliber and dilution wind
The caliber of import straight section is equal, and its length is 120~150mm.
It is highly preferred that being provided with eight discharge wind apertures on the inner cylinder wind outlet section, often row is uniformly distributed circumferentially 8~10,
Air-out small aperture is 5~8mm.Thermocouple insertion reserved opening is provided with the outer tube wall of mixing chamber.
The present invention compared with prior art, the technique effect of specific advantages below and high-lighting：The static mixer is not only
With the advantages that simple in construction, pressure drop is smaller, and ammonia and air can be sufficiently mixed, and because inner cylinder and outer barrel pass through flange
Connection, convenient disassembly, therefore be easy to safeguard and overhaul.
Brief description of the drawings
Fig. 1 is the principle schematic diagram of the embodiment of the present invention.
In figure：1- dilutes wind entrance；2- ammonia entrances；3- mixed gas outlets；4- spiral deflectors；5- blender inner cylinders；
6- thermocouple insert ports；7- inner cylinder closed sections；8- inner cylinder wind outlet sections；9- mixing chambers；10- mixer outlet sections；11- air-out is small
Hole；12- blender outer barrels；13- spiral stream guidance sections；14- dilutes wind inlet straight section.
Embodiment
The structural principle and the course of work of the present invention are described further below in conjunction with the accompanying drawings.
As shown in figure 1, the static mixer provided by the invention blender contain blender inner cylinder 5, blender outer barrel 12,
Spiral stream guidance section 13, mixing chamber 9 and mixer outlet section 10；The both ends of blender outer barrel pass through flange and blender inner cylinder respectively
It is fixedly connected with mixer outlet section；Blender inner cylinder includes dilution wind inlet straight section 14, inner cylinder air-out along airflow direction successively
Section 8 and inner cylinder closed section 7；Axially disposed multiple rows of air-out aperture 11 on the wall of inner cylinder wind outlet section 8, it is circumferentially equal often to arrange aperture
Even arrangement, eight discharge wind apertures are generally provided with inner cylinder wind outlet section 8, often row is uniformly distributed circumferentially 8~10, air-out
Small aperture is 5~8mm.Ammonia entrance 2, spiral stream guidance section are provided with the blender outer tube wall close to inner cylinder wind outlet section front end
13 are arranged between inner cylinder wind outlet section and mixing chamber 9, and the spiral stream guidance section is the spiral stream guidance by being arranged on outer tube inner wall face
Plate 4 is formed, in the cavity of described inner cylinder closed section insertion spiral stream guidance section.
Blender outer barrel caliber is 70~90mm；The caliber of dilution wind inlet straight section be 40~60mm, length for 250~
300mm；The length of inner cylinder wind outlet section is 100~120mm, and caliber is equal with dilution wind inlet straight section；The caliber of inner cylinder closed section
For 25~35mm, spiral stream guidance segment length is 160~180mm；The length of mixing chamber is 120~140mm.The length of inner cylinder closed section
Degree is equal with spiral stream guidance segment length；Mixer outlet section caliber is equal with the caliber for diluting wind inlet straight section, and its length is 120
~150mm.
Leave thermocouple insertion reserved opening 6 in the outside wall surface of the mixing chamber of static mixer, its caliber and flange size by
The supporting determination of thermocouple manufacturer.
In addition to the material selection 304L stainless steels of blender inner cylinder 5, remaining tubing, flange are carbon steel.
The course of work of static mixer is as follows：Dilution wind (air) from dilution wind entrance 1 enter dilution wind inlet it is straight
In section 14, after inner cylinder wind outlet section is flowed out by air-out aperture 11, contacted with the ammonia come in from ammonia imports 2 and tentatively mixed
Close, flow into afterwards in spiral stream guidance section 13, form the mixed airflow of rotation, ammonia is fully contacted and is mixed with dilution wind, it is dilute
Ammonia density is released to less than 5%, then the static mixing again in mixing chamber 9, finally the space 10 outside blender main body is pressed
Blender is left after drop.
Claims (5)
- A kind of 1. static mixer for urea seeding hydrolysis, it is characterised in that：The blender contain blender inner cylinder (5), Blender outer barrel (12), spiral stream guidance section (13), mixing chamber (9) and mixer outlet section (10)；The both ends of blender outer barrel point It is not fixedly connected by flange with blender inner cylinder and mixer outlet section；Blender inner cylinder includes dilution successively along airflow direction Wind inlet straight section (14), inner cylinder wind outlet section (8) and inner cylinder closed section (7)；It is axially disposed more on the wall of inner cylinder wind outlet section (8) Wind aperture (11) is discharged, aperture is often arranged and is circumferentially evenly arranged；Set on the blender outer tube wall close to inner cylinder wind outlet section front end Have ammonia entrance (2), spiral stream guidance section (13) is arranged between inner cylinder wind outlet section and mixing chamber (9), the spiral stream guidance section be by The spiral deflector (4) being arranged on outer tube inner wall face is formed, in the cavity of described inner cylinder closed section insertion spiral stream guidance section.
- 2. according to a kind of static mixer for urea seeding hydrolysis described in claim 1, it is characterised in that：Outside blender Cylinder (12) caliber is 70~90mm；The caliber for diluting wind inlet straight section (14) is 40~60mm, and length is 250~300mm；Inner cylinder The length of wind outlet section (8) is 100~120mm, and caliber is equal with dilution wind inlet straight section；The caliber of inner cylinder closed section (7) is 25 ~35mm, spiral stream guidance section (13) length are 160~180mm；The length of mixing chamber (9) is 120~140mm.
- 3. according to a kind of static mixer for urea seeding hydrolysis described in claim 2, it is characterised in that：Inner cylinder is closed The length of section (7) and spiral stream guidance section (13) equal length；Mixer outlet section (10) caliber and dilution wind inlet straight section (14) Caliber it is equal, its length is 120~150mm.
- A kind of 4. static mixer for urea seeding hydrolysis according to claim 1,2 or 3, it is characterised in that：Institute State and eight discharge wind apertures are provided with inner cylinder wind outlet section (8), often row is uniformly distributed circumferentially 8~10, and air-out small aperture is 5~ 8mm。
- A kind of 5. static mixer for urea seeding hydrolysis according to claim 1, it is characterised in that：In mixing chamber (9) outer tube wall is provided with thermocouple insertion reserved opening (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170314.5A CN105664747B (en) | 2016-03-23 | 2016-03-23 | A kind of static mixer for urea seeding hydrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170314.5A CN105664747B (en) | 2016-03-23 | 2016-03-23 | A kind of static mixer for urea seeding hydrolysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105664747A CN105664747A (en) | 2016-06-15 |
| CN105664747B true CN105664747B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610170314.5A Active CN105664747B (en) | 2016-03-23 | 2016-03-23 | A kind of static mixer for urea seeding hydrolysis |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605039A (en) * | 2019-04-19 | 2019-12-24 | 郑州轻院产业技术研究院有限公司 | Bi-component adhesive mixer |
| CN111841349B (en) * | 2019-04-24 | 2022-05-10 | 中石化广州工程有限公司 | Jet type natural gas drag reducer premixing device |
| CA3155325A1 (en) * | 2019-11-04 | 2021-05-14 | Parker-Hannifin Corporation | Inline mixer device, methods of mixing, and methods of making an inline mixer device |
| CN110898692A (en) * | 2019-11-25 | 2020-03-24 | 大连兆和环境科技股份有限公司 | High-temperature efficient static gas mixing tank and use method thereof |
| CN113006977B (en) * | 2021-03-12 | 2023-02-03 | 中国人民解放军国防科技大学 | Gas premixing device and flow control method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4989062B2 (en) * | 2005-04-28 | 2012-08-01 | バブコック日立株式会社 | Fluid mixing device |
| CN102908920B (en) * | 2012-11-08 | 2015-07-22 | 中国华电工程(集团)有限公司 | Ammonia and air mixer for denitrification device |
| CN203425725U (en) * | 2013-08-01 | 2014-02-12 | 中国大唐集团环境技术有限公司 | Ammonia gas and air mixer in ammonia-spraying denitration system of thermal power plant |
| CN205495376U (en) * | 2016-03-23 | 2016-08-24 | 北京新叶能源科技有限公司 | A static mixer for urea seeding is hydrolysised |
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| CN105664747A (en) | 2016-06-15 |
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Address after: 100083 1905, 19th floor, block a, building 1, yard 10, Xueqing Road, Haidian District, Beijing Patentee after: BEIJING NEW LEAF ENERGY TECHNOLOGY Co.,Ltd. Address before: 100190 Room 203, building 30, No.13, Beiertiao, Zhongguancun, Haidian District, Beijing Patentee before: BEIJING NEW LEAF ENERGY TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20210428 Address after: Room 321, No. 42, Guangzhou road, Nantong Development Zone, Jiangsu Province Patentee after: Nantong Xinye Energy Technology Co.,Ltd. Address before: 1905, 19 / F, block a, building 1, yard 10, Xueqing Road, Haidian District, Beijing 100083 Patentee before: BEIJING NEW LEAF ENERGY TECHNOLOGY Co.,Ltd. |