CN205918473U - Diesel generating set tail -gas clean -up equipment - Google Patents
Diesel generating set tail -gas clean -up equipment Download PDFInfo
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- CN205918473U CN205918473U CN201620442197.9U CN201620442197U CN205918473U CN 205918473 U CN205918473 U CN 205918473U CN 201620442197 U CN201620442197 U CN 201620442197U CN 205918473 U CN205918473 U CN 205918473U
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- tail gas
- gas
- pressure
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- bypass valve
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a diesel generating set tail -gas clean -up equipment, including tail gas cleanup unit and automatic control device. Tail gas cleanup unit includes air inlet subassembly, more than one purification unit, bypass unit and gas outlet subassembly, the air inlet subassembly includes preceding gas collector (2) and one or more air inlet (1), the gas outlet subassembly is including back gas collector (11) and one or more gas outlet (12), purification unit includes along heating element (5), catalysis subassembly (7) that tail gas outflow direction set gradually, grain catcher (9) and big bellows (10), the bypass unit includes bypass pipe (8), bypass valve (3) and ripplet pipe (4). The utility model discloses prevent blocking up, explosion -proof, tail gas treatment and odor -removal effect are obvious, continued work and long service life.
Description
Technical field
This utility model belongs to the tail gas clean-up field of diesel engine, especially tail gas from diesel electric generator purification techniques neck
Domain.
Background technology
Diesel generating set initial start stage (about 3min), exhaust opening is emerged a large amount of black smokes, after diesel engine is stable, black
Though cigarette is reduced, exist all the time, particularly in cold season, exhaust opening can produce a large amount of smog.Diesel generating set is arranged
Put and in tail gas, contain a large amount of soot particulates, hydro carbons, carbon monoxide, carbon dioxide, oxynitride, vapor, oxygen, nitrogen
Gas, sulfur dioxide etc., main matter is soot particulate, and its discharge capacity is about tens times of gasoline engine, untreated can cause
Heavy environmental pollution.Existing diesel vent gas treatment generally adopts " continuously trapping decomposition technique (crt) ", and this technology is by one group of oxygen
Change catalyst unit (doc) and catcher (dpf) composition, trap the particulate matter (black smoke main component) in waste gas using dpf, simultaneously
So that dpf is regenerated under certain condition using doc, can achieve to exhaust particulate thing (pm), hydrocarbons (hc), carbon monoxide
(co), the continuous catalysis of harmful gass such as nitrogen oxides (nox), trapping and decomposition.This method concrete principle is: when diesel oil is sent out
Group of motors on-load running hours, exhaust temperature can reach more than 400 DEG C, is gathered in the soot in wall flow type ceramic filter element
Particulate matter (pm), the harmful substance such as co, thc are burned under catalyst action to be decomposed, and reaches the purpose of regeneration.
Above-mentioned method solves the problems, such as high pollution during diesel generating set continuous service, but works as diesel oil in use
When generating set is in underload or intermittent duty, because soot particulate (pm), co, thc etc. are continuously increased, dpf breathability
It is deteriorated, diesel exhaust gas resistance can be continuously increased.Therefore prior art is there is problems in that when diesel-driven generator idling, load
When low or just having started, because exhaust temperature is too low, doc cannot normal work, easily cause dpf blocking；For solving this problem, have
People's pre-buried heater strip in the core component cordierite honeycomb ceramic (filter element) of dpf, doc cannot normal work when, actively again
Raw dpf, easily vigorous combustion (detonation) again in this mode, leads to dpf to lose efficacy, and also results in cordierite honeycomb ceramic and produces
Cost uprises and not easy care.
Utility model content
For overcoming the deficiencies in the prior art, this utility model provides a kind of tail gas from diesel electric generator to purify and sets
Standby, this system tail gas clean-up efficiency high, and avoid the risk that thermal explosion leads to dpf to lose efficacy with dpf blocking.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of tail gas from diesel electric generator cleaning equipment, including exhaust gas cleaner, described exhaust gas cleaner include into
QI KOU assembly, more than one clean unit, bypass block and gas outlet assembly, described air inlet assembly includes front gas collector
(2) and more than one air inlet (1), described air inlet (1) is arranged on front gas collector (2)；Described gas outlet assembly includes
Gas collector (11) and more than one gas outlet (12) afterwards, described gas outlet (12) is arranged on rear gas collector (11)；Described net
Change the heating assembly (5) that unit includes setting gradually along tail gas stream outgoing direction, catalytic module (7), grain catcher (9) and big
Corrugated tube (10), and described heating assembly (5) connects with front gas collector (2), and described big ripple pipe (10) and rear gas collector
(11) connect；Described bypass block includes bypass pipe (8), bypass valve (3) and small corrugated pipe (4), and described bypass pipe (8) one end leads to
Cross bypass valve (3) to be connected with front gas collector (2), the other end is connected with rear gas collector (11) by small corrugated pipe (4).
Further, also include automaton, described automaton includes monitoring sensing unit, control process
Unit and performance element, described monitoring sensing unit includes temperature sensor (51) and pressure transducer (52), described temperature
Sensor (51) and pressure transducer (52) are installed in heating assembly (5), in front gas collector (2) or rear gas collector (11),
And described temperature sensor (51) is used for detecting the temperature of tail gas, and this temperature signal is sent to control transmitter, and described
Pressure transducer (52) is used for detecting the pressure of tail gas, and this pressure signal is sent to control transmitter；Described performance element
Including electric heater (53) and bypass valve control (31), described electric heater (53) is installed in heating assembly (5), and described
Bypass valve control (31) is connected with bypass valve (3)；Described control process unit includes controlling transmitter and plc controller,
Control interface, inputs display end, and described control transmitter is used for temperature signal and the pressure detecting temperature sensor (51)
The pressure signal that force transducer (52) detects sends plc controller to；Described plc controller receives by inputting display end input
Control parameter, and by control transmitter send temperature signal and pressure signal be compared with control parameter, with judgement be
No startup electric heater (53) heating and whether start bypass valve control (31) open bypass valve (3)；Described input display end
For inputting control parameter, described control parameter includes catalytic module (7) operating temperature and the first preset pressure and second and presets
Pressure reduction, shows temperature and the pressure reduction of measurement simultaneously；Described control interface control the startup of electric heater (53) to close and
The switch of bypass valve control (31).
Preferred: described grain catcher (9) is wall flow type ceramic filter element grain catcher (dpf).
Preferred: described catalytic module (7) is the oxidation catalysiss unit (doc) of metal material or (doc) of ceramic material；
Described wall flow type ceramic filter element is made using carbofrax material, especially the patent " of Patent No. cn200510010967.9
Microparticles collection device and its their preparation method that kind of ceramic catalyst carrier and this carrier are constituted " listed by method preparation viscous
The filter element that the carbofrax material of soil sintering is made.
Preferred: the exhaust temperature that described heating assembly (5) is flowed out is between 200-550 DEG C.Described heating assembly (5) stream
The tail gas pressure going out is between less than 8kpa.
Preferred: the first described preset pressure is set to: 5kpa-15kpa；The second described preset pressure should be greater than
One preset pressure, and the second preset pressure is: 8kpa-20kpa.
Preferred: described temperature sensor is the above thermocouple of k indexing for precision.
Preferred: between less than 50 μm, pore wall thickness is less than 0.4mm in the aperture of described grain catcher (9).
Preferred: the percent opening 40-60% of described grain catcher (9), hole count 10-47 every square centimeter.
Preferred: can be with catalyst layer in described wall flow type ceramic filter element.
A kind of tail gas from diesel electric generator purification method,
Input catalytic module (7) operating temperature and the first preset pressure and the second preset pressure in input display end；Will
Diesel generating set starts, and the tail gas of diesel generating set enters into cleaning system, temperature sensor (51) detection tail now
Temperature degree, pressure transducer (52) detection tail gas pressure now；Control the temperature that temperature sensor (51) is detected by transmitter
The pressure signal that signal and pressure transducer (52) detect sends plc controller to；Plc controller will control transmitter to send
Temperature signal is compared with the operating temperature of input catalytic module (7), if exhaust temperature is less than the work temperature of catalytic module (7)
Degree, starts electric heater (53) auxiliary heating by control interface, until exhaust temperature rises to catalytic module (7) work temperature
Stop electric heater (53) when spending；
The pressure signal controlling transmitter to send is compared by plc controller with the first preset pressure, if pressure signal
Reach the first preset pressure, electric heater (53) is started by control interface and assists heating to carry out catalytic regeneration so that tail
Atmospheric pressure reduces, and when pressure signal is less than the first preset pressure, stops electric heater (53) heating by control interface；
If pressure signal reaches the second preset pressure, bypass valve control (31) is started by control interface and opens bypass valve (3),
Partial tail gas are made to enter in bypass pipe (8) from bypass valve (3).
When diesel generating set just starts, when exhaust temperature is less than the operating temperature of input catalytic module (7), starts electricity and add
Hot device auxiliary heating, temperature rises to and stops during the operating temperature of input catalytic module (7)；During diesel generating set normal work,
Exhaust temperature is higher, is able to maintain that the normal work of catalyst, and electric heater does not run.
When tail gas import and export pressure reduction reaches the first preset pressure, filter element blocking but serious when, automatically play a galvanic electricity and add
Hot device carries out catalytic regeneration, after pressure reduction falls after rise, stops electric heater；When tail gas import and export pressure reduction reaches the second preset pressure, filter
Core blocking is serious, automatically starts electric heater and carries out catalytic regeneration, open bypass valve, it is to avoid diesel engine back pressure is excessive simultaneously, damages
Bad electromotor, and warning annunciator maintainer overhauled.Pressure reduction closes bypass valve after falling after rise, and it is pre- that pressure reduction falls back to first
If when below pressure reduction, stop electric heater.
The tail gas from diesel electric generator cleaning equipment that this utility model provides, compared to existing technology, has following beneficial effect
Really:
1. black smoke process and deodorizing effect substantially, light tight rate is close to zero.
2. when diesel generating set starts, cleaning system automatic and control, simple to operate.
3. the filter element that system uses is carbofrax material, the especially patent " of Patent No. cn200510010967.9
Microparticles collection device and its their preparation method that kind of ceramic catalyst carrier and this carrier are constituted " listed by method preparation viscous
The silicon carbide wall flow ceramic element of soil sintering, long service life, operating cost is low, and heat resisting temperature is high, does not exist and leads because of thermal explosion
Cause the situation that filter element lost efficacy.
4. intelligent regenerative control system, effective control can regenerate, reduces energy expenditure.
5. it is designed with automatic by pass valve open function it is ensured that the normal work of diesel generating set in abnormal cases, keep away
Exempt to block, because of cleaning system, the situation leading to diesel generating set cannot work.
6. modular construction, installs simple, is easy to safeguard.
Brief description
Fig. 1 is the first structural representation of the present utility model；
Fig. 2 is this utility model tail gas control section schematic diagram；
Fig. 3 is second structural representation of the present utility model；
Fig. 4 is the third structural representation of the present utility model；
Fig. 5 is the 4th kind of structural representation of the present utility model；
Wherein, 1 is air inlet, and 2 is front gas collector, and 3 is bypass valve, and 31 is bypass valve control, and 4 is small corrugated pipe, and 5 are
Heating assembly, 51 is temperature sensor, and 52 is pressure transducer, and 53 is electric heater, and 7 is catalytic module (doc), and 8 is bypass
Pipe, 9 is grain catcher (dpf), and 10 is big ripple pipe, and 11 is rear gas collector, and 12 is gas outlet.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.
Embodiment 1
A kind of tail gas from diesel electric generator cleaning equipment, as shown in Figure 1, 2, including exhaust gas cleaner and automatically control dress
Put, described exhaust gas cleaner includes air inlet assembly, two clean units, bypass block and gas outlet assembly, described enter
QI KOU assembly includes front gas collector 2 and an air inlet 1, and described air inlet 1 is arranged on front gas collector 2；Described gas outlet group
Part includes rear gas collector 11 and a gas outlet 12, and described gas outlet 12 is arranged on rear gas collector 11；Described clean unit bag
Include heating assembly 5, catalytic module 7, grain catcher 9 and the big ripple pipe 10 setting gradually along tail gas stream outgoing direction, and institute
State heating assembly 5 to connect with front gas collector 2, and described big ripple pipe 10 is connected with rear gas collector 11；Described bypass block includes
Bypass pipe 8, bypass valve 3 and small corrugated pipe 4, described bypass pipe 8 one end is connected with front gas collector 2 by bypass valve 3, and the other end leads to
Cross small corrugated pipe 4 to be connected with rear gas collector 11.
Described automaton includes monitoring sensing unit, control process unit and performance element, and described monitoring passes
Sense unit includes temperature sensor 51 and pressure transducer 52, and described temperature sensor 51 and pressure transducer 52 are installed in and add
In hot assembly 5, and described temperature sensor 51 is used for detecting the temperature in the overheated assembly of tail gas stream 5, and this temperature signal is passed
Give control transmitter, and described pressure transducer 52 is used for detecting the pressure that tail gas flows through in heating assembly 5, and by this pressure
Signal sends control transmitter to；Described performance element includes electric heater 53 and bypass valve control 31, described electric heater
53 are installed in heating assembly 5, and described bypass valve control 31 is connected with bypass valve 3；Described control process unit includes
Control transmitter and plc controller, control interface, input display end, described input display end is used for inputting control parameter,
Described control parameter includes catalytic module 7 operating temperature and the first preset pressure and the second preset pressure, shows measurement simultaneously
Temperature and pressure reduction；Described control interface controls the switch starting closing and bypass valve control 31 of electric heater 53.
The described temperature signal controlling transmitter to be used for detecting K-type thermocouple 51 is converted to the temperature signal of numeric type, and sends to
Plc controller, the pressure signal being simultaneously used for detecting pressure transducer 52 is converted to the pressure signal of numeric type, and sends to
Plc controller；The described plc controller reception control parameter being inputted by input, the temperature receiving control transmitter transmission
Signal and pressure signal, and temperature signal is compared with control parameter, if temperature signal, not in control parameter, starts
Electric heater 53 heats；Pressure signal is compared with control parameter, if pressure signal, not in control parameter, is controlled simultaneously
Bypass valve 3 opened by system bypass valve control 31.
Described grain catcher 9 is wall flow type ceramic filter element grain catcher dpf.
Described catalytic module 7 is the oxidation catalysiss unit (doc) of metal material or (doc) of ceramic material；Described wall stream
Formula ceramic element adopts a kind of patent " ceramic catalyst load of carbofrax material especially Patent No. cn200510010967.9
Microparticles collection device and its their preparation method that body and this carrier are constituted " listed by method preparation vitrified bond carborundum
Material is made.
The exhaust temperature that described heating assembly 5 flows out is between 200-550 DEG C.The tail gas pressure that described heating assembly 5 flows out
Power is between less than 8kpa.
The first described preset pressure is set to: 5kpa-15kpa；The second described preset pressure should be greater than first and presets
Pressure reduction, and the second preset pressure is: 8kpa-20kpa.
Described temperature sensor is the above thermocouple of k indexing for precision.
Between less than 50 μm, pore wall thickness is less than 0.4mm in the aperture of described grain catcher 9.
The percent opening 40-60% of described grain catcher 9, hole count 10-47 every square centimeter.
Can be with catalyst layer in described wall flow type ceramic filter element.
A kind of tail gas from diesel electric generator purification method,
Input catalytic module 7 operating temperature and the first preset pressure and the second preset pressure in input display end；By bavin
Oily hair group of motors starts, and the tail gas of diesel generating set enters into cleaning system, and temperature sensor 51 detects tail gas temperature now
Degree, pressure transducer 52 detects tail gas pressure now；Control the temperature signal that temperature sensor 51 detects by transmitter and pressure
The pressure signal of force transducer 52 detection sends plc controller to；Plc controller by control transmitter send temperature signal with
The operating temperature of input catalytic module 7 is compared, if exhaust temperature is less than the operating temperature of catalytic module 7, is connect by controlling
Mouth circuit start electric heater 53 auxiliary heating, until exhaust temperature rises to stopping electric heater during catalytic module 7 operating temperature
53.
The pressure signal controlling transmitter to send is compared by plc controller with the first preset pressure, if pressure signal
Reach the first preset pressure, electric heater 53 is started by control interface and assists heating to carry out catalytic regeneration so that tail gas
Reduced pressure, when pressure signal is less than the first preset pressure, stops electric heater 53 by control interface and heats；If pressure
Force signal reaches the second preset pressure, starts bypass valve control 31 by control interface and opens bypass valve 3, makes part tail
Gas enters in bypass pipe 8 from bypass valve 3.
When diesel generating set just starts, when exhaust temperature is less than the operating temperature of input catalytic module 7, starts electricity and add
Hot device auxiliary heating, temperature stops when rising to the operating temperature of input catalytic module 7；During diesel generating set normal work, tail
Temperature degree is higher, is able to maintain that the normal work of catalyst, and electric heater does not run.
Preset pressure one is set to 5kpa, and preset pressure two is set to 8kpa.When tail gas import and export pressure reduction reaches 5kpa
When, filter element blocking but serious when, automatically start electric heater and carry out catalytic regeneration, when pressure reduction falls back to below 5kpa, stop
Only electric heater；Tail gas import and export pressure reduction reaches preset pressure: when tail gas import and export pressure reduction reaches 8kpa, filter element blocking is tight
During weight, automatically start electric heater and carry out catalytic regeneration, open bypass valve, it is to avoid diesel engine back pressure is excessive simultaneously, damage and generate electricity
Machine, when pressure reduction falls back to below 8kpa, cuts out bypass valve, when pressure reduction falls back to below 5kpa, stops electric heater.
This device is used for 200kw generating set, and black smoke clearance reaches 95%；Hc clearance reaches 88%, co clearance
Reach 89%.
Embodiment 2
A kind of tail gas from diesel electric generator cleaning equipment, as shown in Fig. 3,2, including exhaust gas cleaner and automatically control dress
Put, described exhaust gas cleaner includes air inlet assembly, two clean units, bypass block and gas outlet assembly, described enter
QI KOU assembly includes front gas collector 2 and two air inlets 1；Described rear QI KOU assembly includes rear gas collector 11 and two gas outlets
12；Described air inlet 1 is arranged on front gas collector 2；Described gas outlet 12 is arranged on rear gas collector 11, described clean unit bag
Include heating assembly 5, catalytic module 7, grain catcher 9 and the big ripple pipe 10 setting gradually along tail gas stream outgoing direction, and institute
State heating assembly 5 to connect with front gas collector 2, and described big ripple pipe 10 is connected with rear gas collector 11；Described bypass block includes
Bypass pipe 8, bypass valve 3, described bypass pipe 8 one end is connected with front gas collector 2 by bypass valve 3, the other end directly with rear gas collection
Device 11 connects.
Described automaton includes monitoring sensing unit, control process unit and performance element, and described monitoring passes
Sense unit includes temperature sensor 51 and pressure transducer 52, before described temperature sensor 51 and pressure transducer 52 are installed in
In gas collector 2, and described temperature sensor 51 is used for detecting the temperature of non-purified tail gas, and this temperature signal is sent to control
Transmitter, and described pressure transducer 52 is used for detecting the pressure of non-purified tail gas, and this pressure signal is sent to control change
Send device；Described performance element includes electric heater 53 and bypass valve control 31, and described electric heater 53 is installed on heating assembly 5
Interior, and described bypass valve control 31 is connected with bypass valve 3；Described control process unit includes controlling transmitter and plc control
Device processed, control interface, input display end, described input display end is used for inputting control parameter, and described control parameter includes
Catalytic module 7 operating temperature and the first preset pressure and the second preset pressure, show temperature and the pressure reduction of measurement simultaneously；Described control
Interface circuit processed controls the switch starting cut out and bypass valve control 31 of electric heater 53.Described control transmitter is used for
The temperature signal that K-type thermocouple 51 is detected is converted to the temperature signal of numeric type, and sends plc controller to, is simultaneously used for
The pressure signal that pressure transducer 52 is detected is converted to the pressure signal of numeric type, and sends plc controller to；Described plc
Control parameter, the temperature signal receiving control transmitter transmission and pressure signal that controller reception is inputted by input, and
Temperature signal is compared with control parameter, if temperature signal is not in control parameter, starts electric heater 53 and heat；With
When pressure signal is compared with control parameter, if pressure signal is not in control parameter, control bypass valve control 31
Open bypass valve 3.
When diesel generating set just starts, when exhaust temperature is less than the operating temperature of doc, starts electric heater auxiliary and add
Heat, temperature rises to and stops during doc operating temperature；During diesel generating set normal work, exhaust temperature is higher, is able to maintain that catalysis
The normal work of agent, electric heater does not run.
Preset pressure one is set to 7kpa, and preset pressure two is set to 12kpa.When tail gas import and export pressure reduction reaches 7kpa
When, filter element blocking but serious when, automatically start electric heater and carry out catalytic regeneration, when pressure reduction falls back to below 7kpa, stop
Only electric heater；Tail gas import and export pressure reduction reaches preset pressure: 12kpa, when filter element blocking is serious, automatically starts electric heater
Carry out catalytic regeneration, open bypass valve simultaneously, it is to avoid diesel engine back pressure is excessive, damage electromotor, pressure reduction falls back to below 12kpa
When, close bypass valve, when pressure reduction falls back to below 7kpa, stop electric heater.
This device is used for 350kw generating set, and black smoke clearance reaches 93%；Hc clearance reaches 90%, co clearance
Reach 87%.
Embodiment 3
A kind of tail gas from diesel electric generator cleaning equipment, as shown in Fig. 4,2, including exhaust gas cleaner and automatically control dress
Put, described exhaust gas cleaner includes air inlet assembly, two clean units, bypass block and gas outlet assembly, described enter
QI KOU assembly includes front gas collector 2 and two air inlets 1；Described rear QI KOU assembly includes rear gas collector 11 and a gas outlet
12；Described air inlet 1 is arranged on front gas collector 2；Described gas outlet 12 is arranged on rear gas collector 11, described clean unit bag
Include heating assembly 5, catalytic module 7, grain catcher 9 and the big ripple pipe 10 setting gradually along tail gas stream outgoing direction, and institute
State heating assembly 5 to connect with front gas collector 2, and described big ripple pipe 10 is connected with rear gas collector 11；Described bypass block includes
Bypass pipe 8, bypass valve 3 and small corrugated pipe 4, described bypass pipe 8 one end is connected with front gas collector 2 by bypass valve 3, and the other end leads to
Cross small corrugated pipe 4 to be connected with rear gas collector 11.
Described automaton includes monitoring sensing unit, control process unit and performance element, and described monitoring passes
Sense unit includes temperature sensor 51 and pressure transducer 52, before described temperature sensor 51 and pressure transducer 52 are installed in
In gas collector 2 and rear gas collector 11, and described temperature sensor 51 is used for detecting the temperature of tail gas, and this temperature signal is transmitted
To control transmitter, and described pressure transducer 52 is used for detecting the pressure of tail gas, and this pressure signal is sent to control change
Send device；Described performance element includes electric heater 53 and bypass valve control 31, and described electric heater 53 is installed on heating assembly 5
Interior, and described bypass valve control 31 is connected with bypass valve 3；Described control process unit includes controlling transmitter and plc control
Device processed, control interface, input display end, described input display end is used for inputting control parameter, and described control parameter includes
Catalytic module 7 operating temperature and the first preset pressure and the second preset pressure, show temperature and the pressure reduction of measurement simultaneously；Described control
Interface circuit processed controls the switch starting cut out and bypass valve control 31 of electric heater 53.Described control transmitter is used for
The temperature signal that K-type thermocouple 51 is detected is converted to the temperature signal of numeric type, and sends plc controller to, is simultaneously used for
The pressure signal that pressure transducer 52 is detected is converted to the pressure signal of numeric type, and sends plc controller to；Described plc
Control parameter, the temperature signal receiving control transmitter transmission and pressure signal that controller reception is inputted by input, and
Temperature signal is compared with control parameter, if temperature signal is not in control parameter, starts electric heater 53 and heat；With
When pressure signal is compared with control parameter, if pressure signal is not in control parameter, control bypass valve control 31
Open bypass valve 3.
When diesel generating set just starts, when exhaust temperature is less than the operating temperature of doc, starts electric heater auxiliary and add
Heat, temperature rises to and stops during doc operating temperature；During diesel generating set normal work, exhaust temperature is higher, is able to maintain that catalysis
The normal work of agent, electric heater does not run.
Preset pressure one is set to 15kpa, and preset pressure two is set to 20kpa.When tail gas import and export pressure reduction reaches
During 15kpa, filter element blocking but serious when, automatically start electric heater and carry out catalytic regeneration, pressure reduction falls back to below 15kpa
When, stop electric heater；Tail gas import and export pressure reduction reaches preset pressure: when tail gas import and export pressure reduction reaches 20kpa, filter element
Blocking is serious, automatically starts electric heater and carries out catalytic regeneration, open bypass valve, it is to avoid diesel engine back pressure is excessive simultaneously, damages
Electromotor, when pressure reduction falls back to below 20kpa, cuts out bypass valve, when pressure reduction falls back to below 15kpa, stops electric heater.
This device is used for 600kw generating set, and black smoke clearance reaches 93%；Hc clearance reaches 88%, co clearance
Reach 87%.
Embodiment 4
A kind of tail gas from diesel electric generator cleaning equipment, as shown in Fig. 5,2, including exhaust gas cleaner and automatically control dress
Put, described exhaust gas cleaner includes air inlet assembly, two clean units, bypass block and gas outlet assembly, described enter
QI KOU assembly includes front gas collector 2 and two air inlets 1；Described rear QI KOU assembly includes rear gas collector 11 and three gas outlets
12；Described air inlet 1 is arranged on front gas collector 2；Described gas outlet 12 is arranged on rear gas collector 11, described clean unit bag
Include heating assembly 5, catalytic module 7, grain catcher 9 and the big ripple pipe 10 setting gradually along tail gas stream outgoing direction, and institute
State heating assembly 5 to connect with front gas collector 2, and described big ripple pipe 10 is connected with rear gas collector 11；Described bypass block includes
Bypass pipe 8, bypass valve 3 and small corrugated pipe 4, described bypass pipe 8 one end is connected with front gas collector 2 by bypass valve 3, and the other end leads to
Cross small corrugated pipe 4 to be connected with rear gas collector 11.
As shown in Fig. 2 described automaton includes monitoring sensing unit, control process unit and performance element,
Described monitoring sensing unit includes temperature sensor 51 and pressure transducer 52, described temperature sensor 51 and pressure transducer 52
It is installed in front gas collector 2 and heating assembly 5, and described temperature sensor 51 is used for detecting the temperature of non-purified tail gas, and
This temperature signal is sent to control transmitter, and described pressure transducer 52 is used for detecting the pressure of non-purified tail gas, and will
This pressure signal sends control transmitter to；Described performance element includes electric heater 53 and bypass valve control 31, described electricity
Heater 53 is installed in heating assembly 5, and described bypass valve control 31 is connected with bypass valve 3；Described control process list
Unit includes controlling transmitter and plc controller, control interface, inputs display end, and described input display end is used for input control
Parameter processed, described control parameter includes catalytic module 7 operating temperature and the first preset pressure and the second preset pressure, shows simultaneously
The temperature of measurement and pressure reduction；Described control interface controls starting of electric heater 53 to close and bypass valve control 31
Switch.The described temperature signal controlling transmitter to be used for detecting K-type thermocouple 51 is converted to the temperature signal of numeric type, and passes
Give plc controller, the pressure signal being simultaneously used for detecting pressure transducer 52 is converted to the pressure signal of numeric type, and passes
Give plc controller；The control parameter that described plc controller reception is inputted by input, reception control transmitter to send
Temperature signal and pressure signal, and temperature signal is compared with control parameter, if temperature signal is not in control parameter,
Start electric heater 53 to heat；Pressure signal is compared with control parameter simultaneously, if pressure signal is not in control parameter,
Bypass valve control 31 is then controlled to open bypass valve 3.
When diesel generating set just starts, when exhaust temperature is less than the operating temperature of doc, starts electric heater auxiliary and add
Heat, temperature rises to and stops during doc operating temperature；During diesel generating set normal work, exhaust temperature is higher, is able to maintain that catalysis
The normal work of agent, electric heater does not run.
Preset pressure one is set to 9kpa, and preset pressure two is set to 16kpa.When tail gas import and export pressure reduction reaches 9kpa
When, filter element blocking but serious when, automatically start electric heater and carry out catalytic regeneration, when pressure reduction falls back to below 9kpa, stop
Only electric heater；Tail gas import and export pressure reduction reaches preset pressure: 16kpa, when filter element blocking is serious, automatically starts electric heater
Carry out catalytic regeneration, open bypass valve simultaneously, it is to avoid diesel engine back pressure is excessive, damage electromotor, pressure reduction falls back to below 16kpa
When, close bypass valve, when pressure reduction falls back to below 9kpa, stop electric heater.
This device is used for 1200kw generating set, and black smoke clearance reaches 94%；Hc clearance reaches 90%, co clearance
Reach 88%.
Claims (10)
1. a kind of tail gas from diesel electric generator cleaning equipment it is characterised in that: include exhaust gas cleaner, described tail gas clean-up dress
Put including air inlet assembly, more than one clean unit, bypass block and gas outlet assembly, described air inlet assembly includes
Front gas collector (2) and more than one air inlet (1), described air inlet (1) is arranged on front gas collector (2)；Described gas outlet
Assembly includes rear gas collector (11) and more than one gas outlet (12), and described gas outlet (12) is arranged at rear gas collector (11)
On；Heating assembly (5) that described clean unit includes setting gradually along tail gas stream outgoing direction, catalytic module (7), grain catcher
(9) and big ripple pipe (10), and described heating assembly (5) connects with front gas collector (2), and described big ripple pipe (10) and after
Gas collector (11) connects；Described bypass block includes bypass pipe (8), bypass valve (3) and small corrugated pipe (4), described bypass pipe (8)
One end is connected with front gas collector (2) by bypass valve (3), and the other end is connected with rear gas collector (11) by small corrugated pipe (4).
2. tail gas from diesel electric generator cleaning equipment according to claim 1 it is characterised in that: also include automatically controlling dress
Put, described automaton includes monitoring sensing unit, control process unit and performance element, described monitoring sensing unit
Including temperature sensor (51) and pressure transducer (52), described temperature sensor (51) and pressure transducer (52) are installed in
Heating assembly (5) is interior, front gas collector (2) or rear gas collector (11) are interior, and described temperature sensor (51) is used for detecting tail gas
Temperature, and this temperature signal is sent to control transmitter, and described pressure transducer (52) is used for detecting the pressure of tail gas, and
This pressure signal is sent to control transmitter；Described performance element includes electric heater (53) and bypass valve control (31),
Described electric heater (53) is installed in heating assembly (5), and described bypass valve control (31) is connected with bypass valve (3)；
Described control process unit includes controlling transmitter, plc controller, control interface and input display end, and described control becomes
Send device to be used for the temperature signal that detects temperature sensor (51) and pressure signal that pressure transducer (52) detects sends plc to
Controller；Described plc controller receives the control parameter by inputting display end input, and the temperature that transmitter will be controlled to send
Signal and pressure signal are compared with control parameter, to judge whether to start electric heater (53) heating and whether to start bypass
Bypass valve (3) opened by valve control (31)；Described input display end is used for inputting control parameter, and described control parameter includes being catalyzed
Assembly (7) operating temperature and the first preset pressure and the second preset pressure；Described control interface controls electric heater (53)
Startup close and bypass valve control (31) switch.
3. tail gas from diesel electric generator cleaning equipment according to claim 1 it is characterised in that: described grain catcher
(9) it is wall flow type ceramic filter element grain catcher.
4. tail gas from diesel electric generator cleaning equipment according to claim 3 it is characterised in that: described catalytic module (7)
Oxidation catalysiss unit for metal material or the oxidation catalysiss unit of ceramic material；Described wall flow type ceramic filter element adopts carborundum
The filter element that material is made.
5. tail gas from diesel electric generator cleaning equipment according to claim 1 it is characterised in that: described heating assembly (5)
The exhaust temperature flowing out is between 200-550 DEG C；The tail gas pressure that described heating assembly (5) is flowed out is less than between 8kpa.
6. tail gas from diesel electric generator cleaning equipment according to claim 2 it is characterised in that: the described first default pressure
Difference is set to: 5kpa-15kpa；The second described preset pressure should be greater than the first preset pressure, and the second preset pressure is:
8kpa-20kpa.
7. tail gas from diesel electric generator cleaning equipment according to claim 2 it is characterised in that: described temperature sensor
It is the above thermocouple of k indexing for precision.
8. tail gas from diesel electric generator cleaning equipment according to claim 2 it is characterised in that: described grain catcher
(9) between less than 50 μm, pore wall thickness is less than 0.4mm in aperture.
9. tail gas from diesel electric generator cleaning equipment according to claim 2 it is characterised in that: described grain catcher
(9) percent opening 40-60%, hole count 10-47 every square centimeter.
10. tail gas from diesel electric generator cleaning equipment according to claim 3 it is characterised in that: described wall flow type ceramic
It is coated with catalyst layer in filter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620442197.9U CN205918473U (en) | 2016-05-16 | 2016-05-16 | Diesel generating set tail -gas clean -up equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620442197.9U CN205918473U (en) | 2016-05-16 | 2016-05-16 | Diesel generating set tail -gas clean -up equipment |
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| Publication Number | Publication Date |
|---|---|
| CN205918473U true CN205918473U (en) | 2017-02-01 |
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|---|---|---|---|
| CN201620442197.9U Expired - Fee Related CN205918473U (en) | 2016-05-16 | 2016-05-16 | Diesel generating set tail -gas clean -up equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401703A (en) * | 2016-05-16 | 2017-02-15 | 云南菲尔特环保科技股份有限公司 | Tail gas purification system and tail gas purification method for diesel generator set |
-
2016
- 2016-05-16 CN CN201620442197.9U patent/CN205918473U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401703A (en) * | 2016-05-16 | 2017-02-15 | 云南菲尔特环保科技股份有限公司 | Tail gas purification system and tail gas purification method for diesel generator set |
| CN106401703B (en) * | 2016-05-16 | 2019-11-08 | 云南菲尔特环保科技股份有限公司 | Tail gas from diesel electric generator purification system and purification method |
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Granted publication date: 20170201 Termination date: 20190516 |