CN113019087A - Denitration urea solution spray gun blockage automatic monitoring system and working method thereof - Google Patents
Denitration urea solution spray gun blockage automatic monitoring system and working method thereof Download PDFInfo
- Publication number
- CN113019087A CN113019087A CN202110239204.0A CN202110239204A CN113019087A CN 113019087 A CN113019087 A CN 113019087A CN 202110239204 A CN202110239204 A CN 202110239204A CN 113019087 A CN113019087 A CN 113019087A
- Authority
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- China
- Prior art keywords
- urea solution
- spray gun
- solution spray
- wireless signal
- temperature
- 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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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000004202 carbamide Substances 0.000 title claims abstract description 66
- 239000007921 spray Substances 0.000 title claims abstract description 58
- 238000012544 monitoring process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 46
- 238000005516 engineering process Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 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
- B01D53/346—Controlling the process
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- 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)
- Treating Waste Gases (AREA)
Abstract
The invention discloses an automatic monitoring system for the blockage of a denitration urea solution spray gun and a working method thereof. The thermocouple measures the temperature of the pipe wall of the urea solution spray gun, the temperature data is sent out through the wireless signal transmitter, the temperature data sent out by the wireless signal transmitter is received by the wireless signal receiver, and the temperature data received by the wireless signal receiver is displayed by the temperature display. The centralized control personnel can judge whether the urea solution spray gun is blocked in real time according to the temperature data displayed by the temperature display. The device has a simple structure, and can timely find the problem of blockage of the urea solution spray gun caused by crystallization of the urea solution or impurities of the urea solution.
Description
Technical Field
The invention relates to the technical field of flue gas treatment equipment, in particular to an automatic monitoring system for blockage of a denitration urea solution spray gun.
Background
The SNCR denitration technology is a flue gas denitration technology widely adopted at home and abroad at present. In the SNCR system, a urea solution spray gun and a gas-liquid mixing head are often used, and the urea solution is sprayed from a nozzle in a form of mist from a liquid by the pressure action of compressed air. However, the urea solution is an aqueous solution, and when the temperature of the working environment is too low, crystallization occurs, and when crystals accumulate at the nozzle, the nozzle is blocked. Furthermore, impurities in the urea solution can also cause nozzle clogging. If not in time, will seriously restrict the improvement of denitration efficiency and influence the ammonia spraying uniformity of each flue section to constitute big influence to the stability of SNCR denitration operating mode. How to detect the blockage of the spray gun and output signals is one of key technologies for realizing automatic monitoring of the blockage of the denitration urea solution spray gun.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a reasonably designed automatic monitoring system for the blockage of a denitration urea solution spray gun and a working method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a denitration urea solution spray gun blocks up automatic monitoring system, includes the urea solution spray gun, characterized by, install the thermocouple on the pipe wall of urea solution spray gun, the thermocouple passes through data connection line and is connected with wireless signal transmitter, wireless signal transmitter and wireless signal receiver communication are connected, wireless signal receiver passes through data connection line and is connected with the temperature display.
According to the above configuration, the thermocouple measures the temperature of the pipe wall of the urea solution spray gun, the temperature data is transmitted by the wireless signal transmitter, the temperature data transmitted by the wireless signal transmitter is received by the wireless signal receiver, and the temperature data received by the wireless signal receiver is displayed by the temperature display. The centralized control personnel can judge whether the urea solution spray gun is blocked in real time according to the temperature data displayed by the temperature display.
When the urea solution is sprayed, the temperature of the pipe wall of the blocked urea solution spray gun is relatively lower than that of the pipe wall of a normal urea solution spray gun. The temperature of the pipe wall of a normal urea solution spray gun is usually between 50 and 60 ℃, and the temperature of the pipe wall of a urea solution spray gun which is blocked for a long time is usually below 30 ℃. And installing iron wall temperature thermocouples on the pipe wall of each urea solution spray gun, sending a signal to the detected pipe wall temperature of each urea solution spray gun through a wireless signal transmitter, receiving the signal at a wireless signal receiver of the main control room, and displaying the pipe wall temperature of each urea solution spray gun on a temperature display. The serial number of the blocked urea solution spray gun can be judged according to the temperature change of the pipe wall of each urea solution spray gun, so that a master control worker can timely treat the blocked urea solution spray gun, and the denitration efficiency reduction caused by the blockage of the urea solution spray gun is avoided.
Compared with the prior art, the invention has the following advantages and effects: the device has a simple structure, and can timely find the problem of blockage of the urea solution spray gun caused by crystallization of the urea solution or impurities of the urea solution.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: thermocouple 1, wireless signal transmitter 2, wireless signal receiver 3, temperature display 4, urea solution spray gun 5, data link 6.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to fig. 1, in this embodiment, an automatic monitoring system for denitration urea solution spray gun blockage includes urea solution spray gun 5, and install thermocouple 1 on the pipe wall of urea solution spray gun 5, thermocouple 1 is connected with wireless signal transmitter 2 through data connecting line 6, and wireless signal transmitter 2 is connected with wireless signal receiver 3 communication, and wireless signal receiver 3 is connected with temperature display 4 through data connecting line 6.
According to the above configuration, the thermocouple 1 measures the temperature of the pipe wall of the urea solution spray gun 5, temperature data is transmitted by the wireless signal transmitter 2, the wireless signal receiver 3 receives the temperature data transmitted by the wireless signal transmitter 2, and the temperature display 4 displays the temperature data received by the wireless signal receiver 3. The centralized control personnel can judge whether the urea solution spray gun 5 is blocked or not in real time according to the temperature data displayed by the temperature display 4.
When the urea solution is sprayed, the temperature of the pipe wall of the blocked urea solution spray gun 5 is relatively lower than that of the pipe wall of the normal urea solution spray gun 5. The normal pipe wall temperature of the urea solution spray gun 5 is usually between 50 ℃ and 60 ℃, and the pipe wall temperature of the urea solution spray gun 5 which is blocked for a long time is usually below 30 ℃. The method is characterized in that an iron wall temperature thermocouple 1 is arranged on the wall of each urea solution spray gun 5, the detected wall temperature of each urea solution spray gun 5 sends a signal through a wireless signal transmitter 2, a wireless signal receiver 3 of a main control room receives the signal, and the wall temperature of each urea solution spray gun 5 is displayed on a temperature display 4. The number of the blocked urea solution spray gun 5 can be judged according to the temperature change of the pipe wall of each urea solution spray gun 5, so that the blocked urea solution spray gun 5 can be timely treated by main control personnel, and the denitration efficiency is prevented from being reduced due to the blockage of the urea solution spray gun 5.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (2)
1. An automatic denitration urea solution spray gun blockage monitoring system comprises a urea solution spray gun (5) and is characterized in that a thermocouple (1) is installed on the pipe wall of the urea solution spray gun (5), the thermocouple (1) is connected with a wireless signal transmitter (2) through a data connecting line (6), the wireless signal transmitter (2) is in communication connection with a wireless signal receiver (3), and the wireless signal receiver (3) is connected with a temperature display (4) through the data connecting line (6);
when the device works, the thermocouple (1) measures the temperature of the pipe wall of the urea solution spray gun (5), temperature data is sent out through the wireless signal transmitter (2), the wireless signal receiver (3) receives the temperature data sent out by the wireless signal transmitter (2), and the temperature display (4) displays the temperature data received by the wireless signal receiver (3); the centralized control personnel judge whether the urea solution spray gun (5) is blocked or not in real time according to the temperature data displayed by the temperature display (4).
2. The operating method of the denitration urea solution spray gun blockage automatic monitoring system as claimed in claim 1, is characterized by comprising the following steps: installing an iron wall temperature thermocouple (1) on the wall of each urea solution spray gun (5), sending a signal to the detected wall temperature of each urea solution spray gun (5) through a wireless signal transmitter (2), receiving the signal at a wireless signal receiver (3) of a main control room, and displaying the wall temperature of each urea solution spray gun (5) on a temperature display (4); the number of the blocked urea solution spray gun (5) is judged according to the temperature change of the pipe wall of each urea solution spray gun (5), and the master control personnel can timely treat the blocked urea solution spray gun (5) to avoid the reduction of denitration efficiency caused by the blockage of the urea solution spray gun (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110239204.0A CN113019087A (en) | 2021-03-04 | 2021-03-04 | Denitration urea solution spray gun blockage automatic monitoring system and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110239204.0A CN113019087A (en) | 2021-03-04 | 2021-03-04 | Denitration urea solution spray gun blockage automatic monitoring system and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113019087A true CN113019087A (en) | 2021-06-25 |
Family
ID=76466655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110239204.0A Pending CN113019087A (en) | 2021-03-04 | 2021-03-04 | Denitration urea solution spray gun blockage automatic monitoring system and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113019087A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101076657A (en) * | 2004-11-05 | 2007-11-21 | 日产柴油机车工业株式会社 | Exhaust gas purification apparatus |
| CN102052133A (en) * | 2009-11-06 | 2011-05-11 | 博世株式会社 | Reducing agent injection valve abnormality detection device and abnormality detection method |
| CN210207288U (en) * | 2019-05-21 | 2020-03-31 | 辽宁远景产学研环保技术有限公司 | Solid particle spray gun capable of measuring temperature |
| CN112316703A (en) * | 2020-09-30 | 2021-02-05 | 广东华电韶关热电有限公司 | Intelligent monitoring method and system for urea solution spray gun for flue gas denitration |
-
2021
- 2021-03-04 CN CN202110239204.0A patent/CN113019087A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101076657A (en) * | 2004-11-05 | 2007-11-21 | 日产柴油机车工业株式会社 | Exhaust gas purification apparatus |
| CN102052133A (en) * | 2009-11-06 | 2011-05-11 | 博世株式会社 | Reducing agent injection valve abnormality detection device and abnormality detection method |
| CN210207288U (en) * | 2019-05-21 | 2020-03-31 | 辽宁远景产学研环保技术有限公司 | Solid particle spray gun capable of measuring temperature |
| CN112316703A (en) * | 2020-09-30 | 2021-02-05 | 广东华电韶关热电有限公司 | Intelligent monitoring method and system for urea solution spray gun for flue gas denitration |
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Application publication date: 20210625 |
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