CN107441923B - External shower nozzle of denitration spray gun - Google Patents
External shower nozzle of denitration spray gun Download PDFInfo
- Publication number
- CN107441923B CN107441923B CN201710670518.XA CN201710670518A CN107441923B CN 107441923 B CN107441923 B CN 107441923B CN 201710670518 A CN201710670518 A CN 201710670518A CN 107441923 B CN107441923 B CN 107441923B
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- CN
- China
- Prior art keywords
- spray gun
- atomizer
- mounting seat
- support frame
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
Abstract
The invention discloses an external spray head of a denitration spray gun, which comprises a mounting seat (1) fixedly connected on the spray head of the spray gun, an atomizer (2) erected right ahead of a spray nozzle of the spray gun, and a support frame fixedly connected between the mounting seat and the atomizer by a support frame, wherein the atomizer is a bullet-shaped stop member, one end of the support frame is connected on the mounting seat, the other end of the support frame is connected on a support rod (3) on the waist position of the stop member, the support rods are three support rods arranged at equal intervals, and the mounting seat is a mounting nut fixedly connected on the outer periphery of the spray nozzle of the spray gun. Compared with the prior art, the invention can improve the working safety and stability of the selective non-catalytic reduction denitration spray gun and ensure that no safety accident occurs in the working operation of the spray gun, thereby protecting the boiler from being damaged.
Description
Technical Field
The invention relates to the field of boiler denitration atomizing spray guns, in particular to an external spray head of a denitration spray gun.
Background
The commonly adopted technical principle of the existing two-fluid spray gun is that compressed air and a reducing agent at certain pressure are sprayed simultaneously, the reducing agent is atomized in the spray gun by utilizing the compressed air, the mixing of gas and liquid is realized in the spray gun nozzle, and a good atomization spraying effect is obtained by maintaining the pressure of the liquid gas in a stable range; when the pressure of compressed air is reduced to be lower than the safe air pressure, the liquid can not achieve the atomization effect and is directly sprayed out of the spray gun in the form of a water column, and the installation position of the selective non-catalytic reduction denitration spray gun of the boiler of the thermal power plant is usually arranged on the water-cooled wall of the boiler, so that once the situation occurs, the combustion state of the boiler is influenced, the water-cooled wall of the boiler is exploded, and the consequence is very serious. Therefore, controlling the compressed air line pressure supplied by the lance to within the desired range is extremely important to ensure stable operation of the lance.
At present, the technologies for preventing potential safety hazards caused by insufficient supply of compressed air pressure of a denitration atomization spray gun by a selective non-catalytic reduction method mainly comprise two types: firstly, adopting an automatic instrument and a system to control: a pipeline air flow meter is matched with a DCS/PLC central control system, and when the pressure of a compressed air pipeline is lower than a set value, the supply of a reducing agent is stopped; and secondly, controlling the supply of the reducing agent through mechanical parts such as a spring arranged in the spray gun, and when the pressure of the compressed air pipeline is lower than a set value, closing the reducing agent injection pipeline by the interlocking device to stop the supply of the reducing agent. The methods have hidden dangers, and the use of the spray gun is influenced by the safety of an automatic instrument in the measurement and signal transmission processes; the use of the latter spray gun relies on the stable operation of mechanical parts, the wear of which during long-term use will have an impact on safety.
Disclosure of Invention
In view of the above, the technical problems to be solved by the present invention are: the external denitration spray gun spray head can improve the safety and stability of the work of a selective non-catalytic reduction denitration spray gun and ensure that no safety accident occurs in the work operation of the selective non-catalytic reduction denitration spray gun, thereby protecting a boiler from being damaged.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the utility model provides an external shower nozzle of denitration spray gun, wherein, includes the mount pad that is used for linking admittedly on the spray gun shower nozzle, is used for erectting the atomizer in spray gun nozzle dead ahead, the strut links admittedly the support frame between mount pad and the atomizer.
Preferably, the atomizer is a bullet-shaped stopper, and the support frame is a support rod with one end connected to the mounting seat and the other end connected to the waist of the stopper.
Preferably, the supporting rods are three and are arranged at equal intervals.
Preferably, the mounting seat is a mounting nut for screw-fastening connection to the outer periphery of the lance nozzle.
According to the technical scheme, the beneficial effects of the invention are as follows:
compared with the prior art, the invention can improve the working safety and stability of the selective non-catalytic reduction denitration spray gun and ensure that no safety accident occurs in the working operation of the spray gun, thereby protecting the boiler from being damaged. Specifically, the invention is used for being installed on the outer side of the periphery of a nozzle of a spray gun through a mounting nut, so that when a selective non-catalytic reduction method system works normally, a reducing agent is sprayed into a boiler hearth in a spray mode, the spray angle of the spray gun is usually 45-60 degrees, an atomizer is positioned in a range covered by a spraying area, and the existence of the atomizer does not influence the normal movement track of spray droplet particles; when the selective non-catalytic reduction method system works abnormally, the pressure supply of a compressed air pipeline is insufficient, the reducing agent is sprayed out of the spray gun in a water column form at high pressure, the water column can be rapidly dispersed and atomized when contacting the atomizer at high pressure, and spray liquid drop particles enter a boiler furnace in a form, so that the occurrence of safety accidents of pipe penetration or pipe explosion of the boiler water wall caused by the fact that the surface temperature of the water wall is rapidly reduced due to the fact that the water column is directly sprayed to the opposite furnace at high pressure is avoided, and the safety and the practicability are high. In addition, the spray gun nozzle is simple in structure, can be applied to the existing spray gun nozzles with different sizes in an adaptive mode, and is convenient to install and reliable in operation.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
1. A mounting seat; 2, an atomizer; 3. A support rod.
Detailed Description
For those skilled in the art to further understand the features and technical content of the present invention, refer to the following detailed description and the accompanying drawings.
Referring to fig. 1, the invention provides an external spray head of a denitration spray gun, which comprises a mounting seat 1 fixedly connected to the spray head of the spray gun, an atomizer 2 erected right in front of a spray nozzle of the spray gun, and a support frame fixedly connected between the mounting seat and the atomizer, wherein the atomizer is a bullet-shaped stop member, the support frame is a support rod 3 with one end connected to the mounting seat and the other end connected to the waist of the stop member, the support rods are three support rods arranged at equal intervals, and the mounting seat is a mounting nut fixedly connected to the outer periphery of the spray nozzle of the spray gun.
However, the above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, so that the equivalent structural changes made by using the contents of the present specification and the attached drawings are included in the scope of the present invention.
Claims (2)
1. The external denitration spray gun nozzle is characterized by comprising a mounting seat (1) fixedly connected to the spray gun nozzle, an atomizer (2) erected right ahead of the spray gun nozzle, and a support frame fixedly connected between the mounting seat and the atomizer, wherein the atomizer is a bullet-shaped stop member, one end of the support frame is connected to the mounting seat, the other end of the support frame is connected to a support rod (3) on the waist of the stop member, and the three support rods are arranged at equal intervals.
2. The external denitration lance showerhead of claim 1 wherein the mounting block is a mounting nut for screw attachment to the outer periphery of the lance nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670518.XA CN107441923B (en) | 2017-08-08 | 2017-08-08 | External shower nozzle of denitration spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670518.XA CN107441923B (en) | 2017-08-08 | 2017-08-08 | External shower nozzle of denitration spray gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107441923A CN107441923A (en) | 2017-12-08 |
| CN107441923B true CN107441923B (en) | 2020-02-18 |
Family
ID=60489459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710670518.XA Active CN107441923B (en) | 2017-08-08 | 2017-08-08 | External shower nozzle of denitration spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107441923B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002131226A (en) * | 2000-10-27 | 2002-05-09 | Shimadzu Corp | Atomic absorption spectrophotometer |
| CN202606321U (en) * | 2012-06-01 | 2012-12-19 | 杜运军 | Ball type impingement atomization nozzle |
| CN203648374U (en) * | 2014-01-09 | 2014-06-18 | 天津泰宏环保科技有限公司 | Atomization equipment for purifying air |
| CN203664062U (en) * | 2013-11-18 | 2014-06-25 | 西安工程大学 | Target type impinging stream nozzle with booster cavity |
| CN203990985U (en) * | 2014-08-14 | 2014-12-10 | 陕西金翼通风科技有限公司 | A kind of target formula impinging stream nozzle of atomization non-blind area |
| CN204429518U (en) * | 2014-11-07 | 2015-07-01 | 深圳市瑞辰达环保科技有限公司 | For the atomizer of exhaust treatment system |
| CN204486065U (en) * | 2015-02-11 | 2015-07-22 | 深圳市东方祺胜实业有限公司 | A kind of impacting type atomizer |
| CN205495858U (en) * | 2016-05-23 | 2016-08-24 | 浙江中孚环境设备有限公司 | Atomizing spraying nozzle |
| CN106670008A (en) * | 2017-02-08 | 2017-05-17 | 秦皇岛首创思泰意达环保科技有限公司 | Double-fluid atomizing nozzle automatic control method and device |
| CN206316347U (en) * | 2016-12-13 | 2017-07-11 | 泸州市诚润机械有限公司 | A kind of spray gun of flap nozzle |
-
2017
- 2017-08-08 CN CN201710670518.XA patent/CN107441923B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002131226A (en) * | 2000-10-27 | 2002-05-09 | Shimadzu Corp | Atomic absorption spectrophotometer |
| CN202606321U (en) * | 2012-06-01 | 2012-12-19 | 杜运军 | Ball type impingement atomization nozzle |
| CN203664062U (en) * | 2013-11-18 | 2014-06-25 | 西安工程大学 | Target type impinging stream nozzle with booster cavity |
| CN203648374U (en) * | 2014-01-09 | 2014-06-18 | 天津泰宏环保科技有限公司 | Atomization equipment for purifying air |
| CN203990985U (en) * | 2014-08-14 | 2014-12-10 | 陕西金翼通风科技有限公司 | A kind of target formula impinging stream nozzle of atomization non-blind area |
| CN204429518U (en) * | 2014-11-07 | 2015-07-01 | 深圳市瑞辰达环保科技有限公司 | For the atomizer of exhaust treatment system |
| CN204486065U (en) * | 2015-02-11 | 2015-07-22 | 深圳市东方祺胜实业有限公司 | A kind of impacting type atomizer |
| CN205495858U (en) * | 2016-05-23 | 2016-08-24 | 浙江中孚环境设备有限公司 | Atomizing spraying nozzle |
| CN206316347U (en) * | 2016-12-13 | 2017-07-11 | 泸州市诚润机械有限公司 | A kind of spray gun of flap nozzle |
| CN106670008A (en) * | 2017-02-08 | 2017-05-17 | 秦皇岛首创思泰意达环保科技有限公司 | Double-fluid atomizing nozzle automatic control method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107441923A (en) | 2017-12-08 |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An external nozzle of denitration spray gun Effective date of registration: 20210714 Granted publication date: 20200218 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Tianhe branch Pledgor: GUANGDONG TIANRUI TECHNOLOGY Co.,Ltd. Registration number: Y2021440000234 |
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