CN205485558U - Coal slurry boiler control system - Google Patents
Coal slurry boiler control system Download PDFInfo
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- CN205485558U CN205485558U CN201620270219.8U CN201620270219U CN205485558U CN 205485558 U CN205485558 U CN 205485558U CN 201620270219 U CN201620270219 U CN 201620270219U CN 205485558 U CN205485558 U CN 205485558U
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Abstract
The utility model discloses a coal slurry boiler control system aims at solving shortcomings such as current coal slurry boiler degree of automation is low, temperature pressure control inaccuracy, and its technical scheme main points are: a coal slurry boiler control system, includes supply of fuel system, combustor, combustion -supporting system, rouses induced draft system, furnace body and rifle cleaning system, the supply of fuel system includes mud storage tank, supplies stuff pump and filter, be equipped with burning torch and thick liquid rifle on the combustor, combustion -supporting system includes diesel fuel tank, diesel pump and oil gun, drum induced draft system includes air -blower and draught fan, rifle cleaning system links to each other with the thick liquid rifle, rifle cleaning system includes the sweeping gas valve and washs the water valve, supply stuff pump, combustor, diesel pump, air -blower, draught fan, sweeping gas valve and wash the water valve all to link to each other with the PLC controller. The utility model discloses a coal slurry boiler control system degree of automation is high, can interior pressure and the temperature of accurate control boiler.
Description
Technical field
This utility model relates to boiler technology field, more specifically, it relates to a kind of coal water slurry boiler control system.
Background technology
In tradition coal-burning boiler, coal fuel is solid-state combustion system, water-coal-slurry be the additive of the coal by about 70%, the water of 29% and 1% obtained by Physical Processing a kind of low stain, high efficiency, can the coal based fluid fuel of pipeline conveying, the revolutionary combustion system that solid-state combustion system is changed into high-pressure liquid atomization spray combustion of coal water slurry boiler.The mode of this similar fuel oil burning, fully incorporates liquid fuel, the Chemical Physics feature of empty gas and water various burning factor, and promote fuel burn-off rate increases substantially (relative coal-burning boiler).Manage according to liquid coal base fuel burner, boiler whole system is optimized replacement design, both substantially increased the final efficiency of utilization of boiler, and decreased again the gas emissions of major pollutants, thus coal water slurry boiler adequately achieves the industrial efficiency that environmental protection is the most energy-conservation.Existing a lot of coal water slurry boiler product also exists the shortcoming low to temperature, Stress control inaccuracy and automaticity.
For the problems referred to above, at present, the Chinese patent of Publication No. CN202040809U discloses a kind of control device for coal water slurry burner, its drip irrigation device is: include pump for mortar transmission rotational speed control module, air output baffle controls module and absorbing quantity baffle opening control module, heat medium temperature sensor it is connected to respectively outside described pump for mortar transmission rotational speed control module, slurry quantity sensor and oxygen amount harvester one, little modeling block and tolerance module one is set gradually with heat medium temperature sensor on the circuit being wherein connected, described air output baffle controls module-external is connected to tolerance module two respectively, oxygen amount harvester two and tolerance module three, described air output baffle controls module connects air output sensor and oxygen content sensor additionally by comparator；Tolerance module four, difference engine and oxygen amount harvester three it is connected to respectively outside described absorbing quantity baffle opening control module.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of coal water slurry boiler control system, PLC is utilized to control fuel system, burner, combustion-supporting system, drum induced draught system, body of heater and rifle purging system, improve automaticity, accurately control the pressure and temperature in boiler.
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of coal water slurry boiler control system, including fuel system, burner, combustion-supporting system, drum induced draught system, body of heater and rifle purging system, described fuel system includes the slurry supply pump that slurry can communicates and the filter filtering the fuel pumped out from slurry supply pump with slurry can；Described filter communicates with burner provides fuel to burner, and described burner is provided with the burning torch for lighting fuel and the slurry rifle to body of heater injection fuel；Described combustion-supporting system includes diesel fuel tank, for pumping out the diesel pump of oil plant and the oil gun to inject oil plant to oil-burning machine that is connected with burner；Described bulging induced draught system includes being connected with burner with to the aerator of burner oxygen supply and for controlling the air-introduced machine of body of heater pressure；Described rifle purging system is connected for cleaning slurry rifle after the burning ceases with slurry rifle, and described rifle purging system includes the purging air valve communicated with slurry rifle and cleans water valve；Described slurry supply pump, burner, diesel pump, aerator, air-introduced machine, purging air valve are all connected with PLC with cleaning water valve.
By using technique scheme, fuel system is to store and the center of supply water-coal-slurry, store in slurry can and supply water-coal-slurry used in everyday, slurry supply pump is connected with slurry can, when using coal water slurry boiler, slurry supply pump pumps out water-coal-slurry in slurry can, fuel is provided for boiler, filter is used for stirring and filtering water-coal-slurry, on the one hand water-coal-slurry is stirred and filter pressing, the cinder making granule bigger deposits to filter bottom, be conducive to the flowing of high viscosity water coal slurry simultaneously, on the other hand filter water-coal-slurry producing, transport, the impurity being doped into during handling and use, improve the quality of water-coal-slurry, avoid starching rifle blocking；Burner sends into burner hearth for the air required for fuel and burning, make fuel according to certain rapid, stable catching fire of air flow structure, continuous stratification time supply air, fuel and air is made to be sufficiently mixed, improve combustion intensity, burning torch is used for lighting fuel, and slurry rifle is used for injecting fuel into body of heater；Combustion-supporting system includes diesel fuel tank, diesel pump and oil gun, and combustion-supporting system is for aid lighting water-coal-slurry to realize the abundant burning of water-coal-slurry, and diesel fuel tank deposits diesel oil, and the diesel oil being stored in diesel fuel tank is pumped out by diesel pump, sprays into burner through oil gun；Drum induced draught system provides the oxygen needed for burning for the fuel in burner and body of heater, pressure in regulating stove body simultaneously, aerator is blown into air in burner, air mixes with fuel makes full combustion of fuel, air in air-introduced machine sucking-off burner controls the pressure in body of heater, simultaneously by burn in the body of heater flue gas produced and residue sucking-off with clean in holding furnace body；Rifle purging system is for cleaning up slurry rifle after burning terminates, and purging air valve and cleaning water valve control the entrance of purging air and rinse water respectively；Slurry supply pump, burner, diesel pump, aerator, air-introduced machine, purging air valve are all connected with PLC with cleaning water valve, complete the Automated condtrol to these unit by PLC.
During boiler work, first start aerator and air-introduced machine, when blast reaches predetermined value, opening the air door purging burner hearth on burner, regulate in the frequency of air-introduced machine makes burner hearth simultaneously and be in certain negative pressure state, burning torch and oil gun move to operating position subsequently, diesel pump pumps out diesel oil from diesel fuel tank, spraying into burner by oil gun, burning torch igniting makes diesel combustion, and rear burning torch of having lighted a fire is deactivated position；When temperature reaches to whitewash desired temperature, slurry rifle enters whitewashing station and sprays into water-coal-slurry catching fire in burner hearth and light, and is now slurry oil mixed combustion；When fire box temperature reaches de-oiling temperature setting value, diesel pump quits work, oil gun is deactivated position simultaneously, enter into pure slurry combustion phases, in this stage, slurry supply pump frequency and blower frequency linkage regulation, make air and water-coal-slurry keep suitable ratio with time water-coal-slurry fully burn, the frequency of air-introduced machine simultaneously, keeps tiny structure in making burner hearth, prevents spray and combustion instability outside high-temperature flue gas and flare；After burning terminates, slurry rifle to overfall station and performs rifle cleaning procedure from whitewashing Switch of working position, first open purging air valve, spray into purging air and slurry remaining in slurry rifle is blown into burner hearth, be then turned on cleaning water valve, spray into rinse water slurry rifle is washed, finally it is again turned on purging air valve, the remaining slurry in slurry rifle and water are blown off, it is ensured that next time, whitewashing was unobstructed, it is then shut off aerator and burner, after burner hearth cooling, stops air-introduced machine.
This utility model is further arranged to: described burning torch and oil gun are respectively connected with cylinder, stretching by PLC control of described cylinder.
By using technique scheme, burning torch and oil gun be respectively connected with cylinder, by controlling the movement of cylinder and realize burning torch and oil gun moving and deactivate position fast and accurately.
This utility model is further arranged to: described slurry supply pump, aerator and air-introduced machine are by independent transducer drive.
By using technique scheme, slurry supply pump, aerator and air-introduced machine are by independent transducer drive, improve slurry supply pump, aerator and the control accuracy of air-introduced machine, it is ensured that in combustion process, air and water-coal-slurry keep suitable ratio, keep rational tiny structure in burner hearth simultaneously.
This utility model is further arranged to: be provided with high-energy flame igniter in described burning torch.
By using technique scheme, it is provided with hard flame igniter in burning torch, the reliability of increasing ignition, success rate.
This utility model is further arranged to: be provided with effusion meter between described slurry can and slurry supply pump.
By using technique scheme, effusion meter is set between slurry can and slurry supply pump, it is simple to monitoring water-coal-slurry flows out the flow of slurry can.
This utility model is further arranged to: be provided with economizer in described body of heater.
By using technique scheme, economizer is set, improves heat absorption mean temperature, increase cycle efficieny, absorb the heat of low-temperature flue gas, reduce the exhaust gas temperature of flue gas, save the energy.
This utility model is further arranged to: be provided with temperature-detecting device in described body of heater, and described temperature-detecting device is connected with PLC.
By using technique scheme, temperature-detecting device is set, temperature in detecting burner hearth, temperature-detecting device is connected with PLC, when in temperature-detecting device detects burner hearth, temperature is too high, PLC controls slurry supply pump and suitably reduces the supply of fuel, prevents the phenomenon of burner hearth coking.
In sum, this utility model has the advantages that
One, utilizes PLC to control fuel system, burner, combustion-supporting system, drum induced draught system, body of heater and rifle purging system, improves automaticity, accurately control the pressure and temperature in boiler；
Its two, burning torch and oil gun are respectively connected with cylinder, it is achieved burning torch and oil gun move fast and accurately；
Its three, slurry supply pump, aerator and air-introduced machine, by independent transducer drive, improve the control accuracy of slurry supply pump, aerator and air-introduced machine；
Its four, high-energy flame igniter is set, the reliability of increasing ignition, success rate；
Its five, effusion meter is set, it is simple to monitoring water-coal-slurry flow；
Its six, economizer is set, saves the energy；
Its seven, temperature-detecting device is set, prevents the phenomenon of burner hearth coking.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment；
Fig. 2 is the present embodiment control system block diagram.
In figure: 1, PLC；2, fuel system；21, slurry can；22, slurry supply pump；23, filter；24, effusion meter；3, burner；31, burning torch；32, slurry rifle；4, combustion-supporting system；41, diesel fuel tank；42, diesel pump；5, induced draught system is roused；51, aerator；52, air-introduced machine；6, rifle purging system；61, purging air valve；62, water valve is cleaned；63, air compressor machine；64, feed pipe；65, feed pump；7, body of heater；71, economizer；72, temperature-detecting device.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is described in detail.
A kind of coal water slurry boiler control system, as depicted in figs. 1 and 2, including fuel system 2, burner 3, combustion-supporting system 4, drum induced draught system 5, body of heater 7 and rifle purging system 6, fuel system 2 includes slurry can 21, slurry supply pump 22 and the filter 23 being sequentially connected with, effusion meter 24 it is provided with between slurry can 21 and slurry supply pump, 22 filters 23 communicate setting with burner 3, burner 3 is provided with burning torch 31 and slurry rifle 32, burning torch 31 connects the movement having cylinder control point firelock 31, is provided with high-energy flame igniter in burning torch 31；Burner 3 communicates with body of heater 7, provides the flame needed for heating for body of heater 7, is provided with the temperature-detecting device 2 temperature in detecting burner hearth in body of heater 7, and the discharge flue of body of heater 7 afterbody is provided with economizer 71；Combustion-supporting system 4 includes diesel fuel tank 41, diesel pump 42 and the slurry oil gun being sequentially connected with, and oil gun communicates setting with burner 3, and oil gun connects the movement having cylinder to control oil gun；Drum induced draught system 5 includes aerator 51 and air-introduced machine 52, and aerator 51 is connected with burner 3, and air-introduced machine 52 communicates with body of heater 7；Rifle purging system 6 includes purging air valve 61 and cleaning water valve 62, purging air valve 61 is all connected with slurry rifle 32 with cleaning water valve 62, purging air valve 61 is connected with air compressor machine 63 for providing purging air, cleans water valve 62 and is communicated with feed pump 65 and to water pot for providing rinse water；Slurry supply pump 22, burner 3, cylinder, diesel pump 42, aerator 51, air-introduced machine 52, purging air valve 61, cleaning water valve 62 are all connected with PLC 1 with temperature-detecting device 72, and slurry supply pump 22, aerator 51 and air-introduced machine 52 are by independent transducer drive.
Fuel system 2 is to store and the center of supply water-coal-slurry, store in slurry can 21 and supply water-coal-slurry used in everyday, slurry supply pump 22 is connected with slurry can 21, when using coal water slurry boiler, slurry supply pump 22 pumps out water-coal-slurry in slurry can 21, fuel is provided for boiler, effusion meter 24 is for monitoring the flow of water-coal-slurry, filter 23 is used for stirring and filtering water-coal-slurry, on the one hand water-coal-slurry is stirred and filter pressing, the cinder making granule bigger deposits to bottom filter 23, be conducive to the flowing of high viscosity water coal slurry simultaneously, on the other hand filter water-coal-slurry producing, transport, the impurity being doped into during handling and use, improve the quality of water-coal-slurry, avoid starching rifle 32 to block；Burner 3 sends into burner hearth for the air required for fuel and burning, make fuel according to certain rapid, stable catching fire of air flow structure, continuous stratification time supply air, fuel and air is made to be sufficiently mixed, improving combustion intensity, burning torch 31 is used for lighting fuel, and slurry rifle 32 is used for injecting fuel into body of heater 7, hard flame igniter it is provided with, the reliability of increasing ignition and success rate in burning torch 31；Combustion-supporting system 4 includes diesel fuel tank 41, diesel pump 42 and oil gun, combustion-supporting system 4 burns to realize the abundant of water-coal-slurry for aid lighting water-coal-slurry, diesel fuel tank 41 deposits diesel oil, and the diesel pump 42 being stored in diesel fuel tank 41 is gone out by diesel pump 42, sprays into burner 3 through oil gun；Drum induced draught system 5 provides the oxygen needed for burning for the fuel in burner 3 and body of heater 7, pressure in regulation body of heater 7 simultaneously, aerator 51 is blown into air in burner 3, air mixes with fuel makes full combustion of fuel, air in air-introduced machine 52 sucking-off burner 3 controls the pressure in body of heater 7, simultaneously by burn in body of heater 7 flue gas produced and residue sucking-off with clean in keeping body of heater 7；Rifle purging system 6 is for cleaning up slurry rifle 32 after burning terminates, and purging air valve 61 and cleaning water valve 62 control purging air and the entrance of rinse water respectively；Economizer 71 is set, improves heat absorption mean temperature, increase cycle efficieny, absorb the heat of low-temperature flue gas, reduce the exhaust gas temperature of flue gas, save the energy；Slurry supply pump 22, burner 3, cylinder, diesel pump 42, aerator 51, air-introduced machine 52, purging air valve 6, cleaning water valve 62 are all connected with PLC 1 with temperature-detecting device 72, complete the Automated condtrol to these unit by PLC 1；Slurry supply pump 22, aerator 51 and air-introduced machine 52, by independent transducer drive, improve slurry supply pump 22, aerator 51 and the control accuracy of air-introduced machine 52, it is ensured that in combustion process, air and water-coal-slurry keep suitable ratio, keep rational tiny structure in burner hearth simultaneously；Temperature-detecting device 72 is for detecting the temperature in burner hearth, and when in temperature-detecting device 72 detects burner hearth, temperature is too high, PLC control 1 slurry supply pump processed suitably reduces the supply of fuel, prevents the phenomenon of burner hearth coking.
During boiler work; first start aerator 51 and air-introduced machine 52, when blast reaches predetermined value, open the air door purging burner hearth on burner 3; the frequency of regulation air-introduced machine 52 is in certain negative pressure state in making burner hearth simultaneously; burning torch 31 and oil gun move to operating position subsequently, and diesel pump 42 pumps out diesel oil from diesel fuel tank 41, sprays into burner 3 by oil gun; burning torch 31 igniting makes diesel combustion; rear burning torch 31 of having lighted a fire is deactivated position, if loss of ignition, then stopping alarm；When temperature reaches to whitewash desired temperature, slurry rifle 32 enters whitewashing station and sprays into water-coal-slurry catching fire in burner hearth and light, and is now slurry oil mixed combustion；When fire box temperature reaches de-oiling temperature setting value, diesel pump 42 quits work, oil gun is deactivated position simultaneously, enter into pure slurry combustion phases, in this stage, slurry supply pump 22 frequency and the linkage regulation of aerator 51 frequency, make air and water-coal-slurry keep suitable ratio with time water-coal-slurry fully burn, the frequency of air-introduced machine 52 simultaneously, keeps tiny structure in making burner hearth, prevents spray and combustion instability outside high-temperature flue gas and flare；After burning terminates, slurry rifle 32 to overfall station and performs rifle cleaning procedure from whitewashing Switch of working position, first open purging air valve 61, spray into purging air and slurry remaining in slurry rifle 32 is blown into burner hearth, close after purging 10 seconds, it is then turned on cleaning water valve 62, spray into rinse water slurry rifle 32 is washed, close after cleaning the 2-4 second, finally it is again turned on purging the air valve 6120-30 second, the remaining slurry in slurry rifle 32 and water are blown off, it is ensured that next time, whitewashing was unobstructed, it is then shut off aerator 51 and burner 3, after burner hearth cooling, stops air-introduced machine 52.By the above scheme, improve the automaticity of coal water slurry boiler, accurately control the pressure and temperature in boiler.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (7)
1. a coal water slurry boiler control system, it is characterized in that: include fuel system (2), burner (3), combustion-supporting system (4), drum induced draught system (5), body of heater (7) and rifle purging system (6), described fuel system (2) includes the slurry supply pump (22) that slurry can (21) communicates and the filter (23) filtering the fuel pumped out from slurry supply pump (22) with slurry can (21)；Described filter (23) communicates with burner (3) provides fuel to burner (3), and described burner (3) is provided with the burning torch (31) for lighting fuel and the slurry rifle (32) to body of heater (7) injection fuel；Described combustion-supporting system (4) includes diesel fuel tank (41), for pumping out the diesel pump (42) of oil plant and the oil gun to inject oil plant to oil-burning machine that is connected with burner (3)；Described bulging induced draught system (5) includes being connected with burner (3) with to the aerator (51) of burner (3) oxygen supply and the air-introduced machine (52) being used for controlling body of heater (7) pressure；Described rifle purging system (6) is connected with slurry rifle (32) for cleaning slurry rifle (32) after the burning ceases, and described rifle purging system (6) includes the purging air valve (61) communicated with slurry rifle (32) and cleans water valve (62)；Described slurry supply pump (22), burner (3), diesel pump (42), aerator (51), air-introduced machine (52), purging air valve (61) are all connected with PLC (1) with cleaning water valve (62).
Coal water slurry boiler control system the most according to claim 1, it is characterised in that: described burning torch (31) and oil gun are respectively connected with cylinder, and the flexible of described cylinder is controlled by PLC (1).
Coal water slurry boiler control system the most according to claim 1, it is characterised in that: described slurry supply pump (22), aerator (51) and air-introduced machine (52) are by independent transducer drive.
Coal water slurry boiler control system the most according to claim 1, it is characterised in that: described burning torch is provided with high-energy flame igniter in (31).
Coal water slurry boiler control system the most according to claim 1, it is characterised in that: it is provided with effusion meter (24) between described slurry can (21) and slurry supply pump (22).
Coal water slurry boiler control system the most according to claim 1, it is characterised in that: it is provided with economizer (71) in described body of heater (7).
Coal water slurry boiler control system the most according to claim 1, it is characterised in that: being provided with temperature-detecting device (72) in described body of heater (7), described temperature-detecting device (72) is connected with PLC (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270219.8U CN205485558U (en) | 2016-03-31 | 2016-03-31 | Coal slurry boiler control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620270219.8U CN205485558U (en) | 2016-03-31 | 2016-03-31 | Coal slurry boiler control system |
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| CN205485558U true CN205485558U (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224943A (en) * | 2016-08-30 | 2016-12-14 | 王政 | Water coal pulp fluidized bed boiler systems |
| CN106224940A (en) * | 2016-08-30 | 2016-12-14 | 王政 | A kind of water coal pulp fluidized bed boiler structure of multiple stage separation |
-
2016
- 2016-03-31 CN CN201620270219.8U patent/CN205485558U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224943A (en) * | 2016-08-30 | 2016-12-14 | 王政 | Water coal pulp fluidized bed boiler systems |
| CN106224940A (en) * | 2016-08-30 | 2016-12-14 | 王政 | A kind of water coal pulp fluidized bed boiler structure of multiple stage separation |
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