CN102226649A - Industrial high-temperature waste gas conditioning and automatic constant-temperature system - Google Patents
Industrial high-temperature waste gas conditioning and automatic constant-temperature system Download PDFInfo
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- CN102226649A CN102226649A CN2011100924275A CN201110092427A CN102226649A CN 102226649 A CN102226649 A CN 102226649A CN 2011100924275 A CN2011100924275 A CN 2011100924275A CN 201110092427 A CN201110092427 A CN 201110092427A CN 102226649 A CN102226649 A CN 102226649A
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- backwater
- water
- supply
- temperature
- endless tube
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses an industrial high-temperature waste gas conditioning and automatic constant-temperature system which comprises: a water-pump water-supply parallel pipeline with two ways or more ways, one or a plurality of water-supply or backwater ring pipes, a plurality of reflux spray guns, a blower block-blowing system, and a control system; one end of the water-pump water-supply parallel pipeline is connected to a water tank, and the other end is respectively communicated with one or more than one of the water-supply ring pipes on a humidifying and cooling tower disposed outdoors through pipelines; a ring pipe-controlled water-supply or backwater electric valve is disposed on each water-supply or backwater ring pipe, or a spray gun-controlled water-supply or backwater electric valve is disposed on each reflux spray gun installed on the water-supply or backwater ring pipes; a backwater outlet of the reflux spray gun is communicated with the backwater ring pipe, and a flow control valve is disposed on a backwater main pipe which communicates the backwater ring pipe with the water tank; The invention can realize large-range, intelligent and accurate constant-temperature control of industrial high-temperature waste gas by variable water spray in the humidifying and cooling tower.
Description
Technical field
The present invention relates to a kind of thermostatic control system that is used for the industrial high temperature waste gas in the humidifying cooling tower.
Background technology
The high-temp waste gas of cement factory kiln hood, kiln tail, iron and steel factory smelts high-temp waste gas, the high-temp waste gas of heat power plant boiler and the high-temp waste gas in chemical plant all need push back stream spray technique or low pressure double fluid spray technique it is carried out modified, thermostatic control in the humidifying cooling tower in the utilization.Traditional constant temperature system comprises water pump, supply channel, water return pipeline, backflow spray gun and flow regulating and controlling valve door etc.Described backflow spray gun is distributed in the sidewall of humidifying cooling tower, and the backflow gun slot is positioned at the humidifying cooling tower.Described backflow spray gun is communicated with some confessions that are distributed in humidifying cooling tower periphery, backwater ring respectively, and described confession, backwater ring are communicated with outdoor water tank or discharge opening by water pump.Because the pipeline structure of traditional water supply and backwater mode simple and that flow control is set is manually and can not realizes carrying out the regulation and control of science from carse, medium and small three levels, so can not realize on a large scale, intelligent and thermostatic control accurately.
Summary of the invention
The purpose of this invention is to provide the modified and automatic constant temperature system of a kind of industrial high temperature waste gas, with solve in the humidifying cooling tower to technical problems such as industrial high temperature waste gas on a large scale, intelligent and thermostatic controls accurately.
Modified and the automatic constant temperature system of industrial high temperature waste gas of the present invention comprises: two-way or above water pump water supply parallel pipeline, one or several confessions, backwater endless tube, some Zhi Huiliu spray guns, blower fan blow stifled system and control system; Each bar water pump supply channel of described parallel connection is equipped with a water pump, an electrically operated valve and a manually-operated gate, this water pump supply channel one end is connected with water tank, and the other end is communicated with by pipeline respectively with one or several water supply endless tubes on being located at outdoor humidifying cooling tower; For being provided with endless tube control on, the backwater endless tube, or be provided with gun controls on for each backflow spray gun of installing on, the backwater endless tube at each for, backwater electrically operated valve for, backwater electrically operated valve; The backwater outlet of described backflow spray gun is communicated with the backwater endless tube, and the return main that the backwater endless tube is communicated with water tank is provided with flow control valve; Described control system comprises one group of temperature probe and PLC programmable controller of being arranged on high-temp waste gas outlet, conditioning Tower inlet, conditioning Tower outlet and dust-precipitator inlet; The output signal of temperature probe is sent into the PLC programmable controller, and the output control signal of PLC programmable controller is delivered to connected water pump, supply channel control electrically operated valve, the endless tube control flow control valve for the gun controls confession on, backwater electrically operated valve or each the backflow spray gun, backwater electrically operated valve, return main.
The present invention has following advantage: by spray spray water in the humidifying cooling tower, and press water pump pipeline, confession, backwater endless tube, backflow spray gun, multistage regulation devices such as the adjusting that refluxes, automatically control injection flow rate, above-mentioned industry Industrial Stoves are produced 150 ℃ to 400 ℃, continue the high-temp waste gas that is difficult for carrying out UTILIZATION OF VESIDUAL HEAT IN of generation, or temperature＜1000 ℃, because of not continuing to produce the high-temp waste gas that is difficult for carrying out UTILIZATION OF VESIDUAL HEAT IN, carry out the modified and thermostatic control of decreasing temperature and increasing humidity, EGT can be controlled at target temperature value ± 5 ℃ of scopes in; The present invention has that adjustable range is wide, intelligent, positive effect such as the security of lowering equipment investment and operating cost and raising production equipment and stability.
Description of drawings
Fig. 1 is that system pipeline of the present invention is formed schematic diagram.
Number among the figure: the 1st, that supplies water connects tank port, the 2nd, filter, 3, the 6th, water pump, 4, the 5th, discharge opening, 7,9,15,17 electrically operated valves, 8, the 10th, manually-operated gate, the 11st, backwater connect tank port, the 12nd, the water supply ring, 19 that circling water flow rate control valve, 13, the 18th, pressure sensor, the 14th, the blower fan, 16 that blows stifled system are mounted in humidifying cooling tower periphery is mounted in the backwater ring of humidifying cooling tower periphery.
The specific embodiment
Industrial high temperature waste gas of the present invention composition and operation principle modified and automatic constant temperature system are described as follows in conjunction with Fig. 1:
This system comprises following capital equipment:
A, three water pumps, every water pump installed power 37～45kw only illustrates two water pumps 3,6 among the figure; Described water pump 3,6 is communicated with water tank by the tank port 1 that connects of filter 2, water supply.
Piezoelectricity movable valve 7,9 among b, three DN65PN40 (exit of pump with), the moving ball valve of piezoelectricity (every backflow spray gun is equipped with two electrical ball valves) among 32 DN20PN40, press two-seater electric control valve 12 (to regulate the return pressure of water return pipeline among two DN25PN40, the using and the reserved), support the automatic water-supply of various flows.Also be provided with manually-operated gate 8,10 at exit of pump
Press single spray backflow spray gun (not shown among the c, 16, it is installed with the structure on traditional humidifying cooling tower, enter in the tower outward by tower), this spray gun is under normal running (operation) conditions, can make fully atomizing of water spray, fogdrop diameter is between the 80 μ m-180 μ m, both can improve cooling efficient, can avoid phenomenon of the wet end of conditioning Tower again, and provide reliable support humidification is modified.According to primary Calculation, adopt 16 spray guns that injection flow rate is 2.5t/h, injection flow rate can be regulated arbitrarily, can satisfy the operation demand under kiln, the various working conditions of raw mill system.On each backflow spray gun, be provided with the gun controls electrically operated valve.Described backflow spray gun is installed on several confessions, the backwater endless tube 16,19.
Another kind of scheme is not establish electrically operated valve on the backflow spray gun, is provided with endless tube control electrically operated valve 15,17 on each road confession, backwater endless tube 16.On the return main that the backwater ring connects, be provided with flow control valve 12.Be equipped with discharge opening 4,5 on water supply and the water return pipeline.Water return pipeline is connected with water tank by the tank port 11 that connects of backwater.
D, a cover electrical apparatus control system comprise electrical control cubicles, cable, for the said equipment provides power.
E, a cover automation control system comprise that the temperature measuring equipment (comprising temperature transducer), two of PLC programmable controller (but hard disk matrix permanent recording accident information wherein), a cover control software, 4 to 7 covers overlaps switch checkout equipments, control loop and communication cable etc.The automatic operation of above-mentioned all electromechanical equipments of this system's control guarantees to make injection flow rate free adjustment between 1～40t/h under the atomizing effect good premise.This system communicates by letter with the connection of cement plant Central Control Room, guarantees and the operation of cement firing system synchronism stability.System opens, stops being controlled by Central Control Room.Described temperature measuring equipment comprises the temperature probe that is positioned at high-temp waste gas outlet, conditioning Tower inlet, conditioning Tower outlet and dust-precipitator inlet.
In Fig. 1, also comprise blower fan 14 and pressure sensor 13,18
The water pump operation mode
The maximum processing of conditioning Tower exhaust gas volumn is 960,000 m
3/ h (temperature is low), the minimum treat exhaust gas volumn is 660,000 m
3/ h (temperature height), different working conditions, the various variations of the temperature of flue gas, flow, humidity, dust content such as conditioning Tower work need be opened, stops in the face of raw mill, the kiln condition is unusual.For satisfying above-mentioned various variation, and guarantee that economical operation, system adopt the pump group method of operation.
When the kiln system isolated operation, about 660,000 m of air quantity
3/ h, EGT are that carrying capacity is bigger about 320 ℃, and two water pumps start simultaneously, and output is 40m
3/ h, constant temperature system can be controlled at the conditioning Tower outlet temperature in 130 ℃ ± 5 ℃ the interval;
When rotary kiln and raw mill synchronous operation, because of raw mill (especially Vertical Mill) waste gas itself has certain moisture content, and temperature is in about 100 ℃, only opens a water pump and supplies water, and constant temperature system can be controlled at the conditioning Tower outlet temperature in 130 ℃ ± 5 ℃ the interval;
When the kiln system isolated operation and when abnormal high temperature occurring, three water pumps are opened simultaneously, and this moment, maximum output surpassed 40t/h, and constant temperature system still can be controlled at the conditioning Tower outlet temperature in 140 ℃ ± 5 ℃ the interval;
General cement plant raw mill and rotary kiln synchronous operation rate are 85%, learn by the above method of operation, to account for more than 80% of annual total run time the running time of separate unit water pump, separate unit pump motor power is 45kw only, so for auto temperature controlled system, low cost movement is taken one-tenth as the leading factor the method for operation.
Claims (1)
1. modified and automatic constant temperature system of industrial high temperature waste gas is characterized in that it comprises: two-way or above water pump water supply parallel pipeline, one or several confessions, backwater endless tube, some Zhi Huiliu spray guns, blower fan blow stifled system and control system; Each bar water pump supply channel of described parallel connection is equipped with a water pump, an electrically operated valve and a manually-operated gate, this water pump supply channel one end is connected with water tank, and the other end is communicated with by pipeline respectively with one or several water supply endless tubes on being located at outdoor humidifying cooling tower; For being provided with endless tube control on, the backwater endless tube, or be provided with gun controls on for each backflow spray gun of installing on, the backwater endless tube at each for, backwater electrically operated valve for, backwater electrically operated valve; The backwater outlet of described backflow spray gun is communicated with the backwater endless tube, and the return main that the backwater endless tube is communicated with water tank is provided with flow control valve; Described control system comprises one group of temperature probe and PLC programmable controller of being arranged on high-temp waste gas outlet, conditioning Tower inlet, conditioning Tower outlet and dust-precipitator inlet; The output signal of temperature probe is sent into the PLC programmable controller, and the output control signal of PLC programmable controller is delivered to connected water pump, supply channel control electrically operated valve, the endless tube control flow control valve for the gun controls confession on, backwater electrically operated valve or each the backflow spray gun, backwater electrically operated valve, return main.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100924275A CN102226649B (en) | 2011-04-13 | 2011-04-13 | Industrial high-temperature waste gas conditioning and automatic constant-temperature system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100924275A CN102226649B (en) | 2011-04-13 | 2011-04-13 | Industrial high-temperature waste gas conditioning and automatic constant-temperature system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226649A true CN102226649A (en) | 2011-10-26 |
| CN102226649B CN102226649B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100924275A Expired - Fee Related CN102226649B (en) | 2011-04-13 | 2011-04-13 | Industrial high-temperature waste gas conditioning and automatic constant-temperature system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB528938A (en) * | 1939-05-17 | 1940-11-11 | L G Mouchel And Partners Ltd | Improvements in or relating to water cooling towers |
| US3997635A (en) * | 1974-09-02 | 1976-12-14 | Aktiebolaget Carl Munters | Method and device for evaporative cooling |
| CN88101956A (en) * | 1987-04-06 | 1988-10-26 | 株式会社日立制作所 | Automatic water supply device and control method thereof |
| CN2072865U (en) * | 1989-10-18 | 1991-03-13 | 石家庄市阀门二厂 | Atomizing spray gun with high pressure and reverse flow |
| FR2775338A1 (en) * | 1998-02-24 | 1999-08-27 | Caldor | AIR-COOLED WATER COOLER FOR FUME CONDENSER BOILERS AND BOILERS EQUIPPED WITH THIS AERO-COOLER |
| CN2513280Y (en) * | 2001-12-07 | 2002-09-25 | 孙诗杰 | Multichannel parallel circulation cooling water supply device for hydropower station unit |
| CN101596389A (en) * | 2009-06-26 | 2009-12-09 | 沈阳信成科技有限公司 | Quenching and tempering device for cooling high-temperature fume |
| CN201688721U (en) * | 2010-05-11 | 2010-12-29 | 上海泉友制冷设备工程有限公司 | Cooling tower system device |
| CN202024621U (en) * | 2011-04-13 | 2011-11-02 | 杨盛林 | Tempering and automatic constant temperature system for industrial high temperature waste gas |
-
2011
- 2011-04-13 CN CN2011100924275A patent/CN102226649B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB528938A (en) * | 1939-05-17 | 1940-11-11 | L G Mouchel And Partners Ltd | Improvements in or relating to water cooling towers |
| US3997635A (en) * | 1974-09-02 | 1976-12-14 | Aktiebolaget Carl Munters | Method and device for evaporative cooling |
| CN88101956A (en) * | 1987-04-06 | 1988-10-26 | 株式会社日立制作所 | Automatic water supply device and control method thereof |
| CN2072865U (en) * | 1989-10-18 | 1991-03-13 | 石家庄市阀门二厂 | Atomizing spray gun with high pressure and reverse flow |
| FR2775338A1 (en) * | 1998-02-24 | 1999-08-27 | Caldor | AIR-COOLED WATER COOLER FOR FUME CONDENSER BOILERS AND BOILERS EQUIPPED WITH THIS AERO-COOLER |
| CN2513280Y (en) * | 2001-12-07 | 2002-09-25 | 孙诗杰 | Multichannel parallel circulation cooling water supply device for hydropower station unit |
| CN101596389A (en) * | 2009-06-26 | 2009-12-09 | 沈阳信成科技有限公司 | Quenching and tempering device for cooling high-temperature fume |
| CN201688721U (en) * | 2010-05-11 | 2010-12-29 | 上海泉友制冷设备工程有限公司 | Cooling tower system device |
| CN202024621U (en) * | 2011-04-13 | 2011-11-02 | 杨盛林 | Tempering and automatic constant temperature system for industrial high temperature waste gas |
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| CN102226649B (en) | 2012-11-28 |
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Granted publication date: 20121128 |