CN215675290U - Boiler nitrogen oxide discharges allies oneself with accuse device - Google Patents
Boiler nitrogen oxide discharges allies oneself with accuse device Download PDFInfo
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- CN215675290U CN215675290U CN202121759245.4U CN202121759245U CN215675290U CN 215675290 U CN215675290 U CN 215675290U CN 202121759245 U CN202121759245 U CN 202121759245U CN 215675290 U CN215675290 U CN 215675290U
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- nitrogen oxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a boiler nitrogen oxide emission joint control device, which comprises a low-nitrogen burner arranged on a boiler, a nitrogen oxide analyzer arranged on a flue of the boiler and a control system for controlling the low-nitrogen burner and the nitrogen oxide analyzer; the air door baffle of low nitrogen combustor is by first servo motor drive control, the gas butterfly valve of low nitrogen combustor is by second servo motor drive control, nitrogen oxide analysis appearance and control system are connected communication, first servo motor and second servo motor and control system are connected communication. The utility model carries out joint control on the low-nitrogen combustor, the nitrogen oxide analyzer and the control system, and adjusts the opening degree of the air door baffle of the low-nitrogen combustor and the gas supply quantity in real time through the nitrogen oxide concentration monitoring result, namely, adjusts the combustion state of the boiler, so that the combustion is more sufficient, the standard emission of the nitrogen oxide in flue gas is ensured, and the fuel can be saved to a certain extent.
Description
Technical Field
The utility model relates to a boiler nitrogen oxide emission joint control device, and belongs to the field of environmental protection.
Background
Concentration of nitrogen oxidesThe degree is an important index for judging whether the boiler smoke emission reaches the standard or not, and national and local governments set corresponding emission standards for the concentration of nitrogen oxides in the boiler smoke, for example, environmental management departments at the sites of the applicants require that the standard of the nitrogen oxides in the boiler smoke is less than 50mg/m3. The new boiler can generally reach the standard and discharge when being installed and debugged, but along with the increase of the operation time of the boiler, various factors such as mechanical aging, fuel change and the like can change the combustion state, the discharge value can change, and if the emission value is not monitored, the standard exceeding discharge is easily caused. In the prior art, a monitoring instrument is mainly adopted to monitor the concentration of nitrogen oxides in boiler flue gas, and the boiler flue gas nitrogen oxides concentration monitoring instrument has the main functions of concentration monitoring and early warning, but does not participate in control and regulation of the combustion state of a boiler.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects, the utility model provides a boiler nitrogen oxide emission joint control device, which adopts the technical scheme that:
a boiler nitrogen oxide emission joint control device comprises a low-nitrogen burner arranged on a boiler, a nitrogen oxide analyzer arranged on a flue of the boiler and a control system for controlling the low-nitrogen burner and the nitrogen oxide analyzer; the air door baffle of low nitrogen combustor is by first servo motor drive control, the gas butterfly valve of low nitrogen combustor is by second servo motor drive control, nitrogen oxide analysis appearance and control system are connected communication, first servo motor and second servo motor and control system are connected communication.
Further, the probe of the nitrogen oxide analyzer is installed in a flue behind an SCR denitration system of the boiler.
Further, the nitrogen oxide analyzer is an online nitrogen oxide analyzer.
Further, the nitrogen oxide analyzer is provided with an alarm unit.
Further, the boiler is a gas boiler or an oil boiler.
Compared with the prior art, the utility model has the beneficial effects that: the utility model carries out joint control on the low-nitrogen combustor, the nitrogen oxide analyzer and the control system, and adjusts the opening degree of the air door baffle of the low-nitrogen combustor and the gas supply quantity in real time through the nitrogen oxide concentration monitoring result, namely, adjusts the combustion state of the boiler, so that the combustion is more sufficient, the standard emission of the nitrogen oxide in flue gas is ensured, and the fuel can be saved to a certain extent.
Drawings
Fig. 1 is a schematic diagram of the connection relationship of the joint control device of the present invention.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example (b):
referring to fig. 1, a boiler nitrogen oxide emission joint control device includes a low-nitrogen burner 1 disposed on a gas boiler, a nitrogen oxide analyzer 2 disposed on a flue of the gas boiler, and a control system 3 for controlling the low-nitrogen burner 1 and the nitrogen oxide analyzer 2; the air door baffle of low nitrogen combustor 1 is by 4 drive control of first servo motor, the gas butterfly valve of low nitrogen combustor 1 is by 5 drive control of second servo motor, nitrogen oxide analysis appearance 2 is connected communication with control system 3, communication is connected with control system 3 to first servo motor 4 and second servo motor 5.
Further, the probe of the nitrogen oxide analyzer 2 is installed in a flue after an SCR denitration system of the gas boiler.
Further, the nitrogen oxide analyzer 2 is an online nitrogen oxide analyzer, and the nitrogen oxide analyzer 2 has an alarm unit 6.
The low-nitrogen burner can be obtained commercially, such as the types of the low-nitrogen burners of the type RS70, RS100 and the like, and the air door baffle and the gas butterfly valve of the series of low-nitrogen burners are controlled by a servo motor. The control system is connected with the online nitrogen oxide analyzer, the control air door baffle and the servo motor of the gas butterfly valve, and the boiler nitrogen oxide emission joint control device can be formed.
When in use, firstly, the parameter equipment is carried out, and the environmental management department at the place of the applicant requires the emission limit of oxynitride in the flue gas of the boilerA value of 50mg/m3For example, the joint control value is preset to 45mg/m3The alarm value is preset to 50mg/m3. When the nitrogen oxide analyzer monitors that the concentration of nitrogen oxide in the flue gas is more than 45mg/m in the working process of the gas-fired boiler3When the combustion chamber is used, the opening degree of the air door baffle is increased, the gas supply amount is reduced, the combustion is more sufficient, and the concentration of nitrogen oxides is reduced. When the nitrogen oxide analyzer monitors that the concentration of nitrogen oxide in the flue gas is more than 50mg/m3And sending an alarm to perform manual intervention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (5)
1. The utility model provides a boiler nitrogen oxide discharges allies oneself with accuse device which characterized in that: the system comprises a low-nitrogen burner arranged on a boiler, a nitrogen oxide analyzer arranged on a flue of the boiler and a control system for controlling the low-nitrogen burner and the nitrogen oxide analyzer; the air door baffle of low nitrogen combustor is by first servo motor drive control, the gas butterfly valve of low nitrogen combustor is by second servo motor drive control, nitrogen oxide analysis appearance and control system are connected communication, first servo motor and second servo motor and control system are connected communication.
2. The boiler nitrogen oxide emission joint control device according to claim 1, characterized in that: and a probe of the nitrogen oxide analyzer is arranged in a flue behind an SCR denitration system of the boiler.
3. The boiler nitrogen oxide emission joint control device according to claim 1, characterized in that: the nitrogen oxide analyzer is an online nitrogen oxide analyzer.
4. The boiler nitrogen oxide emission joint control device according to claim 1, characterized in that: the nitrogen oxide analyzer is provided with an alarm unit.
5. The boiler nitrogen oxide emission joint control device according to claim 1, characterized in that: the boiler is a gas boiler or an oil boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759245.4U CN215675290U (en) | 2021-07-30 | 2021-07-30 | Boiler nitrogen oxide discharges allies oneself with accuse device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759245.4U CN215675290U (en) | 2021-07-30 | 2021-07-30 | Boiler nitrogen oxide discharges allies oneself with accuse device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215675290U true CN215675290U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121759245.4U Active CN215675290U (en) | 2021-07-30 | 2021-07-30 | Boiler nitrogen oxide discharges allies oneself with accuse device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215675290U (en) |
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2021
- 2021-07-30 CN CN202121759245.4U patent/CN215675290U/en active Active
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