CN115853619A - Combustor system suitable for diesel engine tail gas treatment in use - Google Patents
Combustor system suitable for diesel engine tail gas treatment in use Download PDFInfo
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- CN115853619A CN115853619A CN202310131520.5A CN202310131520A CN115853619A CN 115853619 A CN115853619 A CN 115853619A CN 202310131520 A CN202310131520 A CN 202310131520A CN 115853619 A CN115853619 A CN 115853619A
- Authority
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- Prior art keywords
- cdpf
- catalyst
- tail gas
- combustor
- burner
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- WWHFPJVBJUJTEA-UHFFFAOYSA-N n'-[3-chloro-4,5-bis(prop-2-ynoxy)phenyl]-n-methoxymethanimidamide Chemical compound CONC=NC1=CC(Cl)=C(OCC#C)C(OCC#C)=C1 WWHFPJVBJUJTEA-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000003054 catalyst Substances 0.000 claims abstract description 46
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 40
- 239000000446 fuel Substances 0.000 claims description 34
- 230000008929 regeneration Effects 0.000 claims description 25
- 238000011069 regeneration method Methods 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 9
- 239000013618 particulate matter Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 2
- 238000005067 remediation Methods 0.000 claims 5
- 239000000295 fuel oil Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000004071 soot Substances 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 238000000889 atomisation Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a burner system suitable for treating tail gas of an in-use diesel engine. The combustor is of a cylindrical structure, the front end of the combustor is provided with a mixed combustion device, the middle part of the combustor is radially filled with a DOC (catalyst oxidation catalyst) and a CDPF (continuous catalytic reduction) catalyst, and the rear end of the combustor is provided with a fire-proof cap tail end cover. The system can better solve the problem that a large amount of tail gas of the diesel engine in use, which is badly discharged, low in exhaust temperature and complex in operation condition, exists in the market; the combustor device is provided with a premixing cavity and a combustion cavity, which is beneficial to improving the utilization rate of fuel oil; the tail end cover adopts a fireproof cap structure, so that safety accidents caused by leakage of high-temperature substances such as sparks and the like generated by oxidation and combustion of soot are prevented; the gas-assisted nozzle is adopted to spray fuel oil, so that fuel oil atomization and mixing are facilitated; meanwhile, a large amount of thermal management calibration between the diesel engine and the aftertreatment system is not needed, the aftertreatment thermal management calibration is independent, and the system product has the characteristics of installation and arrangement, simplicity in use, convenience in maintenance and the like.
Description
Technical Field
The invention relates to the technical field of diesel engine tail gas purification, in particular to a burner system suitable for diesel engine tail gas treatment.
Background
The exhaust emission of the diesel engine mainly comprises harmful substances such as particulate matters and the like, and has great harm to human health and atmospheric pollution; with the tightening of air pollution control policy, the purification of tail gas of diesel oil machinery is very important. At present, a large number of non-road diesel machines with severe emission exist in the market, and the machines have the characteristics of low exhaust temperature, complex operation working conditions and the like, and are not beneficial to treating harmful substances such as particulate matters in tail gas.
Disclosure of Invention
The invention discloses a burner system suitable for treating tail gas of a diesel engine according to the defects of the prior art. The invention aims to provide a method for treating harmful substances such as particles in tail gas by combining a burner with a DOC (catalyst introduction) catalyst and a CDPF (continuous catalytic reduction) catalyst; meanwhile, the running state of the burner system and the tail gas purification condition can be monitored through the monitoring terminal and the monitoring platform, so that the normal running of the system is further ensured, and the tail gas treatment effect is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a burner system suitable for using the diesel engine tail gas to administer, the burner is the tubular structure, the front end of the tubular structure sets up the mixed combustion device, DOC catalyst converter and CDPF catalyst converter of radial filling of the middle part, the rear end is the end cap of fire cap;
the mixed burner device comprises an oil-gas premixing cavity, a combustion cavity and a tail gas inlet, wherein the tail gas inlet is formed in the side wall of the combustion cavity, a mass flow meter is arranged at the tail gas inlet and used for obtaining the flow of tail gas, a fuel pump and an air pump are connected in parallel with an air-assisted nozzle, and an outlet of the air-assisted nozzle is formed in the oil-gas premixing cavity at the front end of an ignition device of the combustion cavity; the front end and the rear end of the DOC catalyst are respectively provided with a combustor outlet temperature sensor and a CDPF inlet temperature sensor; the front end and the rear end of the CDPF catalyst are respectively provided with a CDPF differential pressure sensor, and the rear end of the CDPF catalyst is provided with a CDPF outlet temperature sensor; a particle sensor is arranged at the rear outlet;
the fuel pump, the air pump, the mass flowmeter, the temperature sensors, the differential pressure sensor and the particulate matter sensor are all in control connection with the monitoring system.
The monitoring system further comprises a controller, a monitoring terminal and a computer monitoring platform; the controller is connected with the monitoring terminal, and the monitoring terminal is connected with the computer monitoring platform through a wireless network.
And the mixed burner device, the DOC catalyst, the CDPF catalyst and the tail end cover of the fire-proof cap are connected through a hoop and a flange to form a cylindrical structure.
Further, a flame/spark baffle is designed inside the tail end cover device of the fire prevention cap.
The controller is further used for collecting output signals of the fuel pump, the air pump, the ignition device, the mass flowmeter, the combustor outlet temperature sensor, the CDPF inlet temperature sensor, the CDPF differential pressure sensor and the CDPF outlet temperature sensor, processing and performing numerical analysis, calculating fuel injection quantity, driving the fuel pump, the air-assisted nozzle and the ignition device to work, controlling the temperatures of the CDPF inlet and the like, and realizing regeneration and tail gas purification of the CDPF catalyst.
The monitoring terminal is further used for monitoring the running state and the tail gas purification state of the system, displaying the running state and the parameter values of the system on the monitoring terminal, and meanwhile, uploading data to the computer monitoring platform through a wireless network.
The invention is suitable for the burner operation working principle of using diesel engine tail gas to manage including: the control system judges the CDPF regeneration time through two dimensions of CDPF differential pressure and diesel engine running time, and takes the maximum value of the calculation results of the CDPF regeneration time and the diesel engine running time. When the particles collected by the CDPF reach a certain value and the regeneration requirement is activated, the control system controls the fuel pump, the air pump and the air-assisted nozzle to spray oil into the mixed burner device, the fuel oil is fully mixed in the mixed burner device and is ignited and combusted through the ignition device to improve the temperature of tail gas, and the high-temperature tail gas enters the DOC catalyst and the CDPF catalyst in sequence to promote the oxidation combustion reaction of the particles in the CDPF so as to realize the regeneration of the CDPF.
The specific operation method of the system comprises the following steps: the control system identifies that the CDPF differential pressure exceeds a maximum differential pressure threshold value or the running time of the system for last CDPF regeneration exceeds a threshold value, and then triggering judgment; if the judgment result meets the following conditions: when the voltage detection value of the battery is higher than the lowest threshold value, the temperature sensor, the differential pressure sensor, the fuel pump, the air pump and the ignition device have no fault, the controller sends out a signal, an alarm indicator lamp of the monitoring terminal is on and sends out an alarm sound to prompt a worker that the CDPF needs to be regenerated and the system has regeneration conditions, the worker turns on a regeneration switch on the monitoring terminal, and the system enters a CDPF regeneration state; resetting regeneration time and starting timing, the fuel pump and the air pump work, the controller controls the fuel injection quantity of the diesel nozzle by adjusting the fuel pump and the air pump, fuel is fully mixed in the burner device and is ignited and combusted through the ignition device to improve the temperature of tail gas, and high-temperature tail gas enters the DOC catalyst and the CDPF catalyst in sequence to promote oxidation combustion reaction of particles in the CDPF so as to realize regeneration of the CDPF. Meanwhile, the control system performs PI regulation on the fuel injection quantity according to the CDPF inlet temperature and the outlet temperature, and controls the CDPF inlet temperature and the outlet temperature not to exceed the highest threshold value. During the CDPF regeneration process, the control system continuously monitors the state of the system, if the state is monitored: if the CDPF inlet temperature and outlet temperature exceed the maximum temperature threshold or the battery voltage detection value is lower than the minimum threshold, and the temperature sensor, the differential pressure sensor, the fuel pump, the air pump and the ignition device have faults, the CDPF regeneration is interrupted, the fuel injection is stopped, and the regeneration indicator lamp is turned off.
The invention provides a burner system suitable for treating tail gas of an in-use diesel engine and an operation method thereof, and the system can better solve the problem that the tail gas of the in-use diesel engine, which is discharged badly in large quantity, has low exhaust temperature and complex operation working condition, is treated in the market; the combustor device is provided with a premixing cavity and a combustion cavity, which is beneficial to improving the utilization rate of fuel oil; the tail end cover adopts a fire-proof cap structure, so that safety accidents caused by leakage of high-temperature substances such as sparks and the like generated by oxidation and combustion of soot are prevented; the gas-assisted nozzle is adopted to spray fuel oil, so that fuel oil atomization and mixing are facilitated; meanwhile, a large amount of thermal management calibration between the diesel engine and the aftertreatment system is not needed, the aftertreatment thermal management calibration is independent, and the system product has the characteristics of installation and arrangement, simplicity in use, convenience in maintenance and the like.
Drawings
FIG. 1 is a schematic view of the burner system of the present invention.
Wherein, 01 is the controller, 02 is the fuel pump, 03 is the air pump, 04 is the gas-assisted nozzle, 05 is ignition, 06 is mass flowmeter, 07 is combustor export temperature sensor, 08 is CDPF entry temperature sensor, 09 is CDPF differential pressure sensor, 10 is CDPF export temperature sensor, 11 is the particulate matter sensor, 12 is monitor terminal, 13 computer monitor platform, 14 is the mixed combustor device, 15 is the DOC catalyst, 16 is the CDPF catalyst, 17 is the fire prevention cap tail end lid.
Detailed Description
The present invention is further described below in conjunction with the following detailed description which is further illustrative of the principles of the present invention and is not intended to limit the invention in any way, nor is it intended that the invention be limited to the same or similar techniques.
The invention relates to a burner system suitable for treating tail gas of a diesel engine, which is of a tubular structure, wherein the front end of the tubular structure is provided with a mixed combustion device 14, the middle part of the tubular structure is radially filled with a DOC (catalyst oxidation catalyst) catalyst 15 and a CDPF (continuous catalytic reduction) catalyst 16, and the rear end of the tubular structure is provided with a fireproof cap tail end cover 17.
The burner system comprises a controller 01, a fuel pump 02, an air pump 03, an air-assisted nozzle 04, an ignition device 05, a mass flowmeter 06, a burner outlet temperature sensor 07, a CDPF inlet temperature sensor 08, a CDPF differential pressure sensor 09, a CDPF outlet temperature sensor 10, a particulate matter sensor 11, a burner device 14, a DOC catalyst 15, a CDPF catalyst 16 and a fire-proof cap tail end cover device 17; the monitoring system comprises a controller 01, a monitoring terminal 12 and a computer monitoring platform 13.
The fuel pump 02 is connected to the air pump 03 at one end thereof with the air assist nozzle 04, and the air assist nozzle 04 and the ignition device 05 are mounted and fixed at one end to the hybrid burner apparatus 14.
One end of the mass flowmeter 06, the burner outlet temperature sensor 07, the CDPF inlet temperature sensor 08, the CDPF differential pressure sensor 09, the CDPF outlet temperature sensor 10 and the particulate matter sensor 11 is respectively fixed on the burner device 14, the DOC catalyst 15, the CDPF catalyst 16 and the fireproof cap tail end cover 17.
The hybrid burner assembly 14, DOC catalyst 15, CDPF catalyst 16, and the fire cap end cap assembly 17 are connected by clips, flanges, or other means.
The other ends of the fuel pump 02, the air pump 03, the ignition device 05, the mass flowmeter 06, the burner outlet temperature sensor 07, the CDPF inlet temperature sensor 08, the CDPF differential pressure sensor 09 and the CDPF outlet temperature sensor 10 are connected with the controller.
The other end of the particulate matter sensor 11 and the controller 01 are connected with a monitoring terminal 12, and the monitoring terminal 12 is connected with a computer monitoring platform 13 through a wireless network.
An oil-gas premixing cavity and a combustion cavity are designed in the combustor device 14, and fuel oil can be fully mixed and combusted.
The inside design of fire prevention cap tail end lid 17 has flame/spark baffle, prevents that high temperature material such as spark that soot oxidation burning appears from revealing and arousing the incident.
The controller 01 processes and numerically analyzes output signals of the fuel pump 02, the air pump 03, the ignition device 05, the mass flowmeter 06, the burner outlet temperature sensor 07, the CDPF inlet temperature sensor 08, the CDPF differential pressure sensor 09 and the CDPF outlet temperature sensor 10, calculates fuel injection amount and the like, drives the fuel pump 02, the air pump 03, the air-assisted nozzle 04 and the ignition device 05 to work, controls the temperature of the inlet of the CDPF catalyst 16 and the like, and achieves the purposes of regeneration of the CDPF catalyst and purification of tail gas.
The monitoring system mainly monitors the running state and the tail gas purification state of the system, the running state and the parameter values of the system are displayed on the monitoring terminal 12, meanwhile, the monitoring terminal 12 uploads the data to the computer monitoring platform 13 through a wireless network, and the real-time running record of the system equipment can be remotely checked through the computer monitoring platform 13, so that the long-term running and the health monitoring of a system product are facilitated.
The invention is suitable for the burner system operation method for treating the tail gas of the diesel engine, which specifically comprises the following steps: the controller 01 identifies that the CDPF differential pressure exceeds a maximum differential pressure threshold, or the system running time from the last CDPF regeneration exceeds a threshold, and then triggers judgment; if the judgment result meets the following conditions: when the battery voltage detection value is higher than the lowest threshold value, the temperature sensor, the CDPF differential pressure sensor 09, the fuel pump 02, the air pump 03 and the ignition device 05 have no faults, the controller sends out a signal, an alarm indicator lamp of the monitoring terminal 12 is on and sends out an alarm sound to prompt a worker that the CDPF needs to be regenerated and the system has regeneration conditions, and the worker presses a regeneration switch on the monitoring terminal 12 for a long time to enable the system to enter a CDPF regeneration state; resetting regeneration time and beginning timing, fuel pump, air pump work, the fuel injection quantity of diesel oil nozzle is controlled through adjusting fuel pump, air pump etc. to the controller, and the fuel is intensive mixing and is igniteed the burning through ignition and improve the tail gas temperature in the combustor device, and high temperature tail gas gets into DOC catalyst converter, CDPF catalyst converter successively, and particulate matter carries out the oxidation combustion reaction among the promotion CDPF, realizes CDPF regeneration. Meanwhile, the controller performs PI regulation on the fuel injection quantity according to the inlet temperature and the outlet temperature of the CDPF catalyst, and controls the inlet temperature and the outlet temperature of the CDPF catalyst not to exceed the highest threshold value. During the CDPF regeneration process, the controller continuously monitors the state of the system, and if the state is monitored: when the inlet temperature and the outlet temperature of the CDPF catalyst exceed the highest temperature threshold or the voltage detection value of the battery is lower than the lowest threshold, and the temperature sensor, the CDPF differential pressure sensor, the fuel pump, the air pump and the ignition device have faults, the CDPF regeneration is interrupted, the fuel injection is stopped, and the regeneration indicator lamp is turned off.
Claims (6)
1. The utility model provides a combustor system suitable for administer with diesel engine tail gas which characterized in that: the combustor is of a cylindrical structure, the front end of the cylindrical structure is provided with a mixed combustion device, the middle part of the cylindrical structure is radially filled with a DOC (catalyst oxidation catalyst) and a CDPF (continuous catalytic reduction) catalyst, and the rear end of the cylindrical structure is provided with a fire-proof cap tail end cover;
the mixed burner device comprises an oil-gas premixing cavity, a combustion cavity and a tail gas inlet, wherein the tail gas inlet is formed in the side wall of the combustion cavity, a mass flow meter is arranged at the tail gas inlet and used for obtaining the flow of tail gas, a fuel pump and an air pump are connected in parallel with an air-assisted nozzle, and an outlet of the air-assisted nozzle is formed in the oil-gas premixing cavity at the front end of an ignition device of the combustion cavity; the front end and the rear end of the DOC catalyst are respectively provided with a combustor outlet temperature sensor and a CDPF inlet temperature sensor; the front end and the rear end of the CDPF catalyst are respectively provided with a CDPF differential pressure sensor, and the rear end of the CDPF catalyst is provided with a CDPF outlet temperature sensor; a particle sensor is arranged at the outlet of the rear end;
the fuel pump, the air pump, the mass flowmeter, the temperature sensors, the differential pressure sensor and the particulate matter sensor are all in control connection with the monitoring system.
2. The burner system suitable for diesel exhaust remediation of claim 1, wherein: the monitoring system comprises a controller, a monitoring terminal and a computer monitoring platform; the controller is connected with the monitoring terminal, and the monitoring terminal is connected with the computer monitoring platform through a wireless network.
3. The burner system suitable for diesel exhaust remediation of claim 1, wherein: the mixed burner device, the DOC catalyst, the CDPF catalyst and the tail end cover of the fire-proof cap are connected through the anchor ear and the flange to form a cylindrical structure.
4. The burner system suitable for diesel exhaust remediation of claim 1, wherein: and a flame/spark baffle is designed in the tail end cover device of the fire-proof cap.
5. The burner system suitable for diesel exhaust remediation of claim 1, wherein: the controller is used for collecting output signals of the fuel pump, the air pump, the ignition device, the mass flowmeter, the burner outlet temperature sensor, the CDPF inlet temperature sensor, the CDPF differential pressure sensor and the CDPF outlet temperature sensor, processing and performing numerical analysis, calculating fuel injection quantity, driving the fuel pump, the air-assisted nozzle and the ignition device to work, controlling the temperatures of the CDPF inlet and the like, and realizing regeneration and tail gas purification of the CDPF catalyst.
6. The burner system suitable for diesel exhaust remediation of claim 2, wherein: the monitoring terminal is used for monitoring the running state and the tail gas purification state of the system, displaying the running state and the parameter values of the system on the monitoring terminal, and simultaneously uploading data to the computer monitoring platform through a wireless network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310131520.5A CN115853619A (en) | 2023-02-17 | 2023-02-17 | Combustor system suitable for diesel engine tail gas treatment in use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310131520.5A CN115853619A (en) | 2023-02-17 | 2023-02-17 | Combustor system suitable for diesel engine tail gas treatment in use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115853619A true CN115853619A (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310131520.5A Pending CN115853619A (en) | 2023-02-17 | 2023-02-17 | Combustor system suitable for diesel engine tail gas treatment in use |
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| CN (1) | CN115853619A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100542803B1 (en) * | 2005-06-22 | 2006-01-11 | 한국기계연구원 | Burner for regeneration of diesel particulate filter |
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| CN113250792A (en) * | 2021-04-22 | 2021-08-13 | 南京朗森自动化设备有限公司 | Combustion purification method with DPF regeneration function |
| CN114233438A (en) * | 2021-12-22 | 2022-03-25 | 凯龙高科技股份有限公司 | Diesel engine tail gas after-treatment method and device |
-
2023
- 2023-02-17 CN CN202310131520.5A patent/CN115853619A/en active Pending
Patent Citations (11)
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|---|---|---|---|---|
| US20060016176A1 (en) * | 2004-07-23 | 2006-01-26 | Hilden David L | Diesel exhaust aftertreatment device regeneration system |
| KR100542803B1 (en) * | 2005-06-22 | 2006-01-11 | 한국기계연구원 | Burner for regeneration of diesel particulate filter |
| CN102182533A (en) * | 2009-12-01 | 2011-09-14 | 通用汽车环球科技运作有限责任公司 | Air assisted injector, and injection system and exhaust treatment system incorporating the same |
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