CN110860200A - High-efficient cooling sprayer - Google Patents
High-efficient cooling sprayer Download PDFInfo
- Publication number
- CN110860200A CN110860200A CN201810984544.4A CN201810984544A CN110860200A CN 110860200 A CN110860200 A CN 110860200A CN 201810984544 A CN201810984544 A CN 201810984544A CN 110860200 A CN110860200 A CN 110860200A
- Authority
- CN
- China
- Prior art keywords
- cooling
- injection pipe
- cooling jacket
- gas
- liquid
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000004378 air conditioning Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 12
- 239000004202 carbamide Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a high-efficiency cooling injector which comprises an injection pipe, wherein one end of the injection pipe is connected with a gas-liquid mixer, the gas-liquid mixer is provided with a liquid inlet and a compressed air inlet, the other end of the injection pipe is connected with an atomizing nozzle and arranged in a cooling sleeve, the atomizing nozzle is arranged at an opening corresponding to the cooling sleeve, the cooling sleeve is also communicated with a cold air inlet valve, and cold air is introduced into the cooling sleeve through the cold air inlet valve.
Description
Technical Field
The invention relates to an efficient cooling ejector, and belongs to the technical field of environment-friendly machinery.
Background
Denitration is a process for removing nitrogen oxides from combustion flue gas, and has been proposed as a worldwide problem because of the importance of preventing environmental pollution. The mainstream process in the world comprises the following steps: SCR and SNCR.
The Selective Catalytic Reduction (SCR), the most mature flue gas denitration technology at present, is a post-furnace denitration method, and the commercial operation is completed in the late 60-70 s of the 20 th century in japan at the earliest, and the Selective Catalytic Reduction (SCR) is a method called "selectivity" because a reducing agent (NH3, urea) selectively reacts with NOx to form N2 and H2O under the action of a metal catalyst instead of being oxidized by O2. The worldwide popular SCR process is mainly divided into 2 types of ammonia process SCR and urea process SCR. In the 2 methods, the NOx (mainly NO) is reduced to N2 and water which have little influence on the atmosphere by using the NOx reduction function of ammonia under the action of a catalyst, and the reducing agent is NH 3.
In the conventional denitration apparatus, a urea solution is used as a reducing agent, and the urea solution is crystallized at a high temperature. If the urea injector is not well protected, urea crystallization can easily occur, clogging the injector.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: to overcome the above problems, a highly efficient cooling injector is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a high-efficient cooling sprayer, includes the injection pipe, the one end connection gas-liquid mixer of injection pipe, gas-liquid mixer is provided with liquid entry and compressed air entry, atomizer is connected to the other end of injection pipe and sets up at the cooling jacket intraductally, atomizer sets up the opening part that cooling jacket corresponds, cooling jacket still intercommunication has the air conditioning admission valve, and air conditioning lets in the cooling jacket intraductally through the air conditioning admission valve.
Preferably, the injection pipe is fitted into the cooling jacket by a snap fitting.
Preferably, the cooling jacket is further provided with one or more flanges.
The invention has the beneficial effects that: according to the invention, the cooling sleeve is additionally arranged outside the injection pipe and is connected with the compressed air, so that the temperature of the urea conveying injection part of the injector can be effectively reduced, urea crystallization and blockage are prevented, and the injection efficiency is higher.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a block diagram of one embodiment of the present invention.
The labels in the figure are: 1-a gas-liquid mixer, 2-a quick coupler, 3-a flange, 4-a cooling sleeve, 5-an atomizing nozzle, 6-a cold air inlet valve, 7-an injection pipe, 11-a compressed air inlet and 12-a liquid inlet.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1
The efficient cooling injector shown in fig. 1 comprises an injection pipe 7, wherein the injection pipe 7 is used for injecting urea solution, one end of the injection pipe 7 is connected with a gas-liquid mixer 1, the gas-liquid mixer 1 is provided with a liquid inlet 12 and a compressed air inlet 11, the liquid inlet 12 is connected with the urea solution, the compressed air inlet is externally connected with compressed air to pressurize and inject the liquid, the other end of the injection pipe 7 is connected with an atomizing nozzle 5 and arranged in a cooling sleeve 4, the atomizing nozzle 5 is arranged at an opening corresponding to the cooling sleeve 4, the atomized liquid is sprayed out from the opening of the cooling sleeve 4, the cooling sleeve 4 is also communicated with a cold air inlet valve 6, and cold air is introduced into the cooling sleeve 4 through the cold air inlet valve 6.
According to the invention, the cooling sleeve 4 is additionally arranged outside the injection pipe 7, and compressed air is introduced, so that the temperature of the urea conveying and injecting part of the injector can be effectively reduced, urea crystallization and blockage are prevented, and the injection efficiency is higher.
In a preferred embodiment, the injection pipe 7 is installed in the cooling jacket 4 through the quick coupler 2, and installation is more convenient.
In a preferred embodiment, the cooling jacket 4 is further provided with one or more flanges 3, and if the length of the cooling jacket 4 is too long during actual installation, the flanges 3 for connection can be provided as required.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides a high-efficient cooling sprayer, its characterized in that, includes the injection pipe, the one end of injection pipe is connected gas-liquid mixer, gas-liquid mixer is provided with liquid entry and compressed air entry, atomizer is connected and is set up at the cooling jacket intraductally to the other end of injection pipe, atomizer sets up the opening part that cooling jacket corresponds, cooling jacket still intercommunication has the air conditioning admission valve, and air conditioning lets in the cooling jacket intraductally through the air conditioning admission valve.
2. A high efficiency cooling spray as claimed in claim 1 wherein said spray tube is encased within said cooling jacket by a snap fit.
3. A high efficiency cooling injector in accordance with claim 1 wherein said cooling jacket is further provided with one or more flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984544.4A CN110860200A (en) | 2018-08-28 | 2018-08-28 | High-efficient cooling sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984544.4A CN110860200A (en) | 2018-08-28 | 2018-08-28 | High-efficient cooling sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110860200A true CN110860200A (en) | 2020-03-06 |
Family
ID=69651299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810984544.4A Pending CN110860200A (en) | 2018-08-28 | 2018-08-28 | High-efficient cooling sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110860200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11583803B2 (en) * | 2019-01-30 | 2023-02-21 | Mitsubishi Heavy Industries, Ltd. | Reducing agent supply device and denitration device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203043831U (en) * | 2012-11-30 | 2013-07-10 | 北京北科欧远科技有限公司 | Reducing agent injection device used for SNCR (Selective Non-Catalytic Reduction) denitration |
| CN203971758U (en) * | 2014-07-30 | 2014-12-03 | 北京洛卡环保技术有限公司 | A kind of denitrating flue gas spraying urea liquid emitter |
| CN204220334U (en) * | 2014-10-13 | 2015-03-25 | 北京洛卡环保技术有限公司 | A kind of denitrating flue gas directly sprays spraying urea liquid emitter |
| CN204544529U (en) * | 2015-04-08 | 2015-08-12 | 张卿 | A kind of for the air cooling spray gun device in SNCR technique |
| CN204602468U (en) * | 2015-05-04 | 2015-09-02 | 云南燊永环保科技有限公司 | A kind of denitration spray gun device |
| CN206215007U (en) * | 2016-11-30 | 2017-06-06 | 云南华电昆明发电有限公司 | A kind of denitrating flue gas spray gun |
| WO2018042055A1 (en) * | 2016-09-05 | 2018-03-08 | Yara International Asa | Injection lance for injecting a liquid reducing reagent into a flue gas from the combustion of fuel in a boiler or furnace to reduce the amount of nitrogen oxides in the flue gas |
| CN208911814U (en) * | 2018-08-28 | 2019-05-31 | 艾克赛尔能源科技江苏有限公司 | A kind of efficient cooling injection device |
-
2018
- 2018-08-28 CN CN201810984544.4A patent/CN110860200A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203043831U (en) * | 2012-11-30 | 2013-07-10 | 北京北科欧远科技有限公司 | Reducing agent injection device used for SNCR (Selective Non-Catalytic Reduction) denitration |
| CN203971758U (en) * | 2014-07-30 | 2014-12-03 | 北京洛卡环保技术有限公司 | A kind of denitrating flue gas spraying urea liquid emitter |
| CN204220334U (en) * | 2014-10-13 | 2015-03-25 | 北京洛卡环保技术有限公司 | A kind of denitrating flue gas directly sprays spraying urea liquid emitter |
| CN204544529U (en) * | 2015-04-08 | 2015-08-12 | 张卿 | A kind of for the air cooling spray gun device in SNCR technique |
| CN204602468U (en) * | 2015-05-04 | 2015-09-02 | 云南燊永环保科技有限公司 | A kind of denitration spray gun device |
| WO2018042055A1 (en) * | 2016-09-05 | 2018-03-08 | Yara International Asa | Injection lance for injecting a liquid reducing reagent into a flue gas from the combustion of fuel in a boiler or furnace to reduce the amount of nitrogen oxides in the flue gas |
| CN206215007U (en) * | 2016-11-30 | 2017-06-06 | 云南华电昆明发电有限公司 | A kind of denitrating flue gas spray gun |
| CN208911814U (en) * | 2018-08-28 | 2019-05-31 | 艾克赛尔能源科技江苏有限公司 | A kind of efficient cooling injection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11583803B2 (en) * | 2019-01-30 | 2023-02-21 | Mitsubishi Heavy Industries, Ltd. | Reducing agent supply device and denitration device |
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