CN201575718U - High-temperature flue gas cooling and tempering equipment - Google Patents
High-temperature flue gas cooling and tempering equipment Download PDFInfo
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- CN201575718U CN201575718U CN2009200148821U CN200920014882U CN201575718U CN 201575718 U CN201575718 U CN 201575718U CN 2009200148821 U CN2009200148821 U CN 2009200148821U CN 200920014882 U CN200920014882 U CN 200920014882U CN 201575718 U CN201575718 U CN 201575718U
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Abstract
The utility model provides high-temperature flue gas cooling and tempering equipment which comprises a two-fluid electric controller as well as a water pipe and a gas pipe both arranged between a high-temperature flue gas inlet and a high-temperature flue gas outlet. The high-temperature flue gas cooling and tempering equipment is characterized in that a low-pressure pump is arranged inside the gas pipe; the low-pressure gas pipe is incorporated with the water pipe in the front of a spray gun; two frequency converters are arranged to regulate the pressure and the flow of a water pump and a gas pump; the nozzle diameter (Phi) of the spray gun ranges from 6 mm to 7 mm; the diameter of the atomized particles is less than 300 micrometers; temperature sensors are arranged in the positions of the inlet and the flue gas outlet of a humidifying tower; the outlet temperature is controlled within the range from 130 degrees to 150 degrees; the difference between the flue gas input temperature and the flue gas outlet temperature, the inner volume of the tower and the down stroke of atomization are calculated during the control operation routine; the two frequency converters are operated to control the gas pressure of the water pump and the gas pump within the range from 0.4 MPa to 0.6 MPa; and the operating power is automatically regulated when the gas flow and the water flow are within the range from 5 T/H to 25 T/H. The water mist has fine particle size and uniform particle size distribution, so that the accurate control of temperature is achieved and the retention time of atomized particles and the risk of wet bottom are reduced. The high-temperature flue gas cooling and tempering equipment, as the dust removal equipment, can increase the density and reduce the volume and the flow speed of the flue gas, thereby improving the dust removing performance. In addition, the particle size of water mist is reduced to significantly achieve the control of temperature and humidity.
Description
Technical field the utility model relates to the treatment facility that discharges flue gas, a kind of quenching and tempering device for cooling high-temperature fume.
Background technology
The cooling high-temperature fume equipment of Cun Zaiing adopts water under high pressure substantially in the market, by special nozzle, relies on the hyperpressure of water, atomizes.This equipment life is short, the fault rate height, and high-pressure pump efficient is low, the energy consumption height.The pressure variation causes unstable properties to cause atomizing effect poor, and spray diameter the longer time of staying, causes phenomenon of the wet end easily at the 300-600 micron.Because the spraying granule size is uneven and temperature humidity is lacked effective control measure, dust discharges with flue gas most probably, influences dust removing effects.Must expand cooling system equipment if exhaust gas volumn just increases, problems can not satisfy the actual production requirement.Particularly the chimney dust exhausting concentration in the most cement plants of China seriously surpasses national building materials environmental protection standard, and one of reason is that cement plant kiln tail conditioning Tower spray effect is bad, causes the deduster flue gas concentration can not be lower than the 100mg/NM of national building materials environmental protection standard
3, can not satisfy deduster like this is that dust collector efficiency can not be given full play to the requirement of flue gas.
Summary of the invention
This novel purpose provides a kind of quenching and tempering device for cooling high-temperature fume, adopts compressed air to participate in water atomization, customizes respectively at various industrial environment, alleviates pollute, cut down the consumption of energy satisfactory for result.
This quenching and tempering device for cooling high-temperature fume, comprise two-fluid electric apparatus control apparatus, the water, the air pipe that between high-temperature flue gas entry and outlet, are provided with, it is characterized in that low-lift pump is set in the gas circuit, the low pressure gas circuit is incorporated water lines into before spray gun, two frequency converters are set regulate the pressure and the flow of water pump, air pump, nozzle bore
Spraying grain diameter all is provided with temperature sensor less than 300 microns in conditioning Tower import and smoke outlet, and outlet temperature is controlled at 130 ℃～150 ℃; The control operation procedure calculates at the temperature difference, the tower internal volume of gas approach temperature and outlet temperature, the journey of spraying, and regulates operation power automatically by two Frequency Converter Control water pumps, air pump in low pressure value scope 0.4～0.6MPa, throughput, discharge 5～25T/H scope; Switch board is established touch screen operation, and PLC is communicated with the circuit of controlled parts.
Following table is the effect contrast of quenching and tempering device for cooling high-temperature fume of the present invention and prior art
Superior function: at the tail gas of cement industry, the participation of two-fluid lance technology of the present invention and Compressed Gas, the cooling water of use can be river, Chi Shui and recirculated water, because of establishing filter, nozzle has bigger unimpeded aperture again:
Can not stop up, because water quality requirement is reduced, operating cost reduces.
Because negative pressure design, although the aperture of nozzle is bigger, the spraying granule that produces fine and closely woven, 300 microns of maximum gauges, therefore reduced atomizing particle holdup time and the danger of the wet end, more important is that the water smoke particle diameter of ejection is tiny and even, thereby better realization is to accuracy control over temperature.
The cleaner of the present invention's design reduces smoke density increase, volume and speed, has improved dust removal performance.Can implement temperature and humidity control because the water smoke granularity is little more significantly, significantly reduce the discharging that dust is carried dioxin and furans secretly, lower the environmental protection cost.
The low-lift pump energy consumption that present technique adopts is low.The energy of compressor consumes low, flue gas can be cooled off fast, thereby more effectively reduce flue gas volume.The low-lift pump and the low pressure pipeline system of configuration, equipment cost, low pressure pumping plant maintenance are little, equipment failure rate also reduces, and prolong service life.
Can not occur phenomenon of the wet end at the bottom of the conditioning Tower, can not produce caking, adopt anti-abrasive material, maintenance is little.
Description of drawings
Fig. 1 is the process chart of quenching and tempering device of the present invention;
Fig. 2 is the spray gun structure schematic diagram in the quenching and tempering device;
Fig. 3 is the control device schematic diagram in this equipment;
Fig. 4 is water, the gas execution unit schematic diagram of this equipment configuration;
The specific embodiment
The example 1 of this quenching and tempering device for cooling high-temperature fume is the production that is used for the cement plant.Fume emission requires the conditioning Tower outlet temperature to maintain in 130 ℃～150 ℃ temperature ranges.
Referring to Fig. 1: the technology of the present invention is water lines 6, the air pipe 7 that is provided with between the high-temperature flue gas entry 9 of conditioning Tower and outlet 10, in conditioning Tower, establish inlet temperature sensor 1 and outlet temperature sensor 5, it is characterized in that in the air pipe 7 low-lift pump being set, see Fig. 4: gas circuit outlet valve 36, gas circuit cutting-off valve 42, gas circuit pressure sensor 41, electromagnetic flowmeter 40, gas hand valve 43 and magnetic valve 44, instrumentation have water route pressure sensor 37, and control system PLC and frequency converter all are installed in the two-fluid mist cooling switch board 39 and implement execution of program instructions.On water pump intake header road, pressure transmitter 37 is set.Dispose also in the system that cutting-off valve 38 is used for detecting water route pressure between valve water route outlet valve 35 and water route and the gas circuit, and establish gas circuit and water route block blind plate 51, establish the water storage that water tank overflow pipe 46, blowoff valve 47, filter element 48 and liquid level gauge 50 can satisfy the equipment long-term stability in the water tank 49.
Water insert two-fluid electric apparatus control apparatus 2 behind the source of the gas, two vertical multi-stage centrifugal water pumps (the using and the reserved) with external frequency converter, adopt variable speed regulate, according to the operation procedure of setting in the control device 2, control water pump 1# and the work of water pump 2# time in turn.
Two-fluid electric apparatus control apparatus 2, as shown in Figure 3: switch board 3 is established touch-screen 34 operation, the circuit that is connected by cable between PLC and the touch-screen: PLC connected system power supply 17, alarm 18, inlet temperature signal 19, outlet temperature signal 20, system running state 21, system remote startup/stop signal 22, water route compression pump 23, gas circuit compression pump 24, the water route flow, Pressure gauge unit 25, control alarm signal 27 in the feedback, control alarm signal 28 in the feedback, 1# water pump 29 is opened/stops in control, 2# water pump 30 is opened/stops in control, exhanst gas outlet temperature sensor signal 31, the three-phase electricity that is connected with the 1# water pump, the three-phase electricity that links to each other with the 2# water pump.Job control program calculating is also passed through two water pumps 45 of two Frequency Converter Control.The control index: compressed air is regulated operation power automatically in low pressure value scope 0.4～0.6MPa, discharge 5～25T/H scope.
Spray gun structure as shown in Figure 2: between the mounting flange 12 of spray gun 4 and spray gun waterway inlet flange 16 in the water pipe by the gas access flange 11 vertical low pressure gas roads of inserting, front end gas block panel 13 and water route bellows 14 that the flue gas of setting up defences in spray gun 4 tube chambers flows backwards, the aperture of spray gun 4 front end nozzles 15
Example 1: the conditioning Tower exhaust gas volumn 480 of cement producing line, 000Am3/h, inlet temperature is greater than 330 ℃, during equipment work, cooling water is boosted by variable frequency pump and is adjusted to certain pressure 0.4～1.2MPa and flow 18～25T/H in device filtration back after filtration from the water source water tank, then the water yield only need be regulated 6～18T/H when conditioning Tower has only 20% exhaust gas volumn, deliver to spray gun 4 through water lines 6 outlets this moment, under the effect of compressed air 0.4～0.6MPa, atomize, produce 200～300 microns of maximum atomizing particles, produce best atomizing particle 20～70 μ m, differ greatly, water smoke is evaporation rapidly in high-temperature flue gas, absorbs a large amount of heats of flue gas, flue-gas temperature is reduced rapidly and maintains in the certain temperature range 130 ℃～150 ℃.When outlet thermometric component detection flue-gas temperature surpasses the desired temperature scope, under the operation procedure control of controller, provide the control variable frequency pump and regulate rotating speed automatically, increase pressure of supply water and flow, make that the rotating speed of water pump constantly increases in the work, injection flow rate constantly increases, thereby flue-gas temperature is reduced in the specified scope; When outlet temperature reduced above temperature design value scope, under the control of controller, variable frequency pump was regulated rotating speed automatically, reduces pressure of supply water and flow, and injection flow rate is reduced, thereby made flue-gas temperature go back up to interior 130 ℃～150 ℃ of specified scope.Wherein the working method of 2 water pumps is the using and the reserved, the working time of every water pump is open to operating personnel by the mode of touch-screen setup parameter, operating personnel can set the working time of every water pump according to on-site actual situations, when the water pump controller that quits work can start another pump working automatically according to program setting, thereby guarantee that every water pump can both effectively be used.
The design's basic principle is the evaporative cooling principle, by the various controls that are used for varying environment, make the cooling media particle density maximization in the unit are, promptly atomizing particle is accomplished minimum, increase the cooling medium and the contact area of the medium of being lowered the temperature, the cooling medium was evaporated in the shortest time in the landing process, reach the purpose of fast cooling, and do not produce ponding.
Referring to Fig. 3, starting the flue gas cooling system can realize by touch-screen or by middle control DCS system remote startup/stop signal 22 on the spot, and system enters " RUN " state 28 and begins and regulates best gas-vapor mix ratio according to detected outlet temperature 20 control liquid revolution speeds 33 and air pressure 24 control valves.
Stopping the flue gas cooling system can realize that by touch-screen or by middle control DCS system remote startup/stop signal 22 system enters " shutdown " state 21 on the spot, and under this state, system does not spray, and does not have temperature control.Some alarm signal 26 can make system enter " shutdown " state (all breaking down) as two pumps at this moment system send warning knowledge signal can for buzzer 18.The operator can start safe mode 17 by (on the spot or long-range) makes system works under the safe mode flow.Under this pattern, nozzle is with manual flow spraying value default or Long-distance Control, and the control flue gas particle is below 300 microns, and normal air pressure 24 and hydraulic pressure 23 remains unchanged, and amount of liquid is regulated automatically according to outlet temperature 31.When system works under safe mode, some alert if can be invalid.
System is provided with according to control and handles warning and warning distinctively.
Write down instrument fault, warning message and machine halt trouble in the alarm logging respectively:
(1), instrument fault comprises: flowmeter fault, pressure transmitter fault, frequency converter failure.Instrument fault belongs to intermediate alarm level system and does not shut down under safe mode.
(2), warning message comprises: warning when inlet temperature surpasses operating personnel's design temperature 50%, water pump are inhaled the vacuum warning and are worked as water pump with certain rotating speed operation, and do not have hydraulic pressure water pump suction vacuum under safe mode can move pump certainly in the respective line.Warning message belongs to the general alarm grade equipment to be had alarm lamp prompting but not to shut down.
(3), machine halt trouble comprises: flowmeter fault, 2 frequency converters all are out of order, equipment entrance air pressure is lower than setting pressure 20% fault, and machine halt trouble belongs to the highest alarm level equipment downtime.
The integrated alarm indication will be sent to Central Control Room in the scene when above alarm condition occurring, and operating personnel can confirm the onsite alarming situation by alarm logging.
Claims (4)
1. quenching and tempering device for cooling high-temperature fume, comprise two-fluid electric apparatus control apparatus, the water, the air pipe that between high-temperature flue gas entry and outlet, are provided with, it is characterized in that low-lift pump is set in the gas circuit, the low pressure gas circuit is incorporated water lines into before spray gun, two frequency converters are set regulate water pump, air pump pressure, flow, in conditioning Tower import and smoke outlet temperature sensor is set all, outlet temperature is controlled at 130 ℃～150 ℃; The control operation procedure calculates at the temperature difference, the tower internal volume of gas approach temperature and outlet temperature, the journey of spraying and passes through two Frequency Converter Control water, air pump at low pressure value scope 0.4～0.6MPa, the interior adjusting automatically of throughput discharge 5～25T/H scope operation power; The PLC switch board is established touch screen operation, is communicated with the circuit of controlled parts.
2. quenching and tempering device for cooling high-temperature fume according to claim 1 is characterized in that the nozzle φ 6～7mm of spray gun.
3. quenching and tempering device for cooling high-temperature fume according to claim 1, the maximum gauge that it is characterized in that the water atomization particle that produced is less than 300 microns; When conditioning Tower has only 20% exhaust gas volumn, the water yield that then enters spray gun is adjusted to 6～18T/H, under the effect of compressed air 0.4～0.6MPa, atomize, can produce tiny atomizing particle to 20～70 μ m, with automatic regulating pondage of the variation of exhaust gas volumn and pressure, make water smoke in high-temperature flue gas, evaporate, make flue-gas temperature to reduce rapidly rapidly and maintain in 130 ℃～150 ℃ temperature ranges.
4. quenching and tempering device for cooling high-temperature fume according to claim 1 is characterized in that the circuit of stube cable between PLC and the touch-screen: PLC connected system power supply (17), alarm (18), inlet temperature signal (19), outlet temperature signal (20), system running state (21), system remote startup/stop signal (22), water route compression pump (23), gas circuit compression pump (24), the water route flow, Pressure gauge unit 25, control alarm signal (27) in the feedback, control alarm signal (28) in the feedback, 1# water pump (29) is opened/stops in control, 2# water pump (30) is opened/stops in control, exhanst gas outlet temperature sensor signal (31) and three-phase electricity that is connected with the 1# water pump and the three-phase electricity that links to each other with the 2# water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200148821U CN201575718U (en) | 2009-06-26 | 2009-06-26 | High-temperature flue gas cooling and tempering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200148821U CN201575718U (en) | 2009-06-26 | 2009-06-26 | High-temperature flue gas cooling and tempering equipment |
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| Publication Number | Publication Date |
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| CN201575718U true CN201575718U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200148821U Expired - Fee Related CN201575718U (en) | 2009-06-26 | 2009-06-26 | High-temperature flue gas cooling and tempering equipment |
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| CN (1) | CN201575718U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909014A (en) * | 2014-04-01 | 2014-07-09 | 安徽博隆机械制造有限公司 | Humidifier tower system in cement plant |
| CN104162530A (en) * | 2014-07-21 | 2014-11-26 | 苏州凯枫瑞电子科技有限公司 | Spinning workshop dust removing system based on remote control |
| CN104164718A (en) * | 2014-07-21 | 2014-11-26 | 苏州凯枫瑞电子科技有限公司 | Dedusting pipeline structure in textile workshop |
-
2009
- 2009-06-26 CN CN2009200148821U patent/CN201575718U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909014A (en) * | 2014-04-01 | 2014-07-09 | 安徽博隆机械制造有限公司 | Humidifier tower system in cement plant |
| CN104162530A (en) * | 2014-07-21 | 2014-11-26 | 苏州凯枫瑞电子科技有限公司 | Spinning workshop dust removing system based on remote control |
| CN104164718A (en) * | 2014-07-21 | 2014-11-26 | 苏州凯枫瑞电子科技有限公司 | Dedusting pipeline structure in textile workshop |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20130626 |