CN101289289A - Quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove - Google Patents
Quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove Download PDFInfo
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- CN101289289A CN101289289A CNA2007100527325A CN200710052732A CN101289289A CN 101289289 A CN101289289 A CN 101289289A CN A2007100527325 A CNA2007100527325 A CN A2007100527325A CN 200710052732 A CN200710052732 A CN 200710052732A CN 101289289 A CN101289289 A CN 101289289A
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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Abstract
The invention relates to an energy-saving self-control device for sharply quenching and cooling rotary kiln clinkers, which pertains to the technical field of dry cement production and essentially solves the problem of the non-ideal effect of a grate cooler in cooling the clinkers in the existing rotary kiln. The self-control device of the invention is essentially characterized by comprising a spray gun, a compressed air source, a high pressure water pump, a motor, a water tank and a control circuit which consists of a singlechip controller, a programmable controller, a frequency converter and a detecting circuit; the singlechip controller consists of a singlechip and a peripheral interface circuit; the detecting circuit consists of temperature, pressure and water flow detecting circuits; a temperature sensor and the spray gun are installed at an entrance where the grate cooler is connected with a kiln head hood. A temperature controller is connected with the peripheral interface circuit of the singlechip, the frequency converter and a PLC expansion module; a pressure controller and a water flow controller are connected with the expansion module of the programmable controller; a pressure sensor and a water flow sensor are installed at the water outlet of the high pressure water pump. The energy-saving self-control device of the invention is essentially applied to sharply quenching and cooling the clinkers in the novel dry cement production equipment.
Description
Technical field
The invention belongs to the cement produced with the dry method production technical field, be specifically related to a kind of New Type Dry-process Cement Production equipment carries out the chilling cooling to grog self-con-tained unit that is used for.
Technical background
Grate cooler cooling grog has mostly been adopted in the production of present domestic new dry process rotary kiln cement, but cooling performance is unsatisfactory, go out the grate cooler clinker temperature generally still more than 150 ℃, high-temperature flue gas also has a strong impact on the safe operation of dust precipitator, too high conveying and the grinding that also affects grog of clinker temperature.At present, most producers adopt the mode that cooling air blasted and exported at cooler direct trickle that strengthens for solving the high problem of clinker temperature, though solved the problem of temperature to a certain extent, but blast too much air and increased the blower fan power consumption on the one hand, secondary air temperature is difficult to improve on the other hand, and is unfavorable to the calcining of kiln.
Summary of the invention
Purpose of the present invention provides a kind of grate cooler exit clinker temperature that reduces at above-mentioned weak point exactly, can improve the rotary kiln calcination condition simultaneously, improve clinker strength, the quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove of save energy.
Technical solution of the present invention is: a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove, it is characterized in that: comprise spray gun, the compressed air source, high-pressure hydraulic pump, motor and the water tank that link to each other with this spray gun, by the pilot circuit of the control spray gun current formed of programmable logic controller, frequency transformer and testing circuit of singlechip controller, band expansion module, spray gun is installed in the ingress of kiln hood cover connection grate cooler; Singlechip controller is made up of micro-chip and peripheral interface circuit; Testing circuit is made up of temperature, pressure and discharge testing circuit; Temperature sensing circuit is made up of temperature sensor and temperature controller, and temperature sensor is installed in the ingress that the kiln hood cover connects grate cooler, and temperature controller is connected with SCM peripheral interface circuit, Frequency Converter Control end and programmable logic controller expansion module; Pressure detection circuit is made up of pressure transmitter and pressure controller, and pressure controller is connected with the programmable logic controller expansion module; The discharge testing circuit is made up of water flow sensor and discharge controller, and the discharge controller is connected with the programmable logic controller expansion module; Pressure transmitter and water flow sensor are installed on the high-pressure hydraulic pump water outlet.
Be provided with temperature sensor in the exit of described kiln hood cover connection grate cooler in the technical solution of the present invention, this temperature sensor is connected with temperature controller.
Spray gun is formed by shower nozzle with by the wear-resisting withstand voltage heat resisting pipe that is threaded in the technical solution of the present invention; Shower nozzle is made of tubular shower nozzle base, adjusting cone valve, adjusting screw(rod), water supply connector, inlet suction port, bell nozzle and rear end cap, the bell nozzle is fixed on being threaded on the tubular shower nozzle base excircle, the conical surface of regulating cone valve cooperates with the bell nozzle, regulate cone valve and be fixed on the rear end cap with being threaded, water supply connector, inlet suction port are fixed on the shower nozzle base excircle.
Also comprise micro computer in the pilot circuit described in the technical solution of the present invention, micro computer is connected with programmable logic controller by data-interface.
Temperature sensor described in the technical solution of the present invention is a thermopair.
Fixedly below the high-pressure hydraulic pump, the water tank internal fixing has water level automatic control device to water tank described in the technical solution of the present invention.
Spray gun described in the technical solution of the present invention stretches into position on the interior castor bed of grate cooler.
Spray gun described in the technical solution of the present invention is to be arranged side by side in grate cooler above the castor bed.
The present invention is owing to adopt by spray gun, compressed air source, high-pressure hydraulic pump, motor, the quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove of water tank and pilot circuit, pilot circuit is by singlechip controller, the programmable logic controller of band expansion module, frequency transformer and testing circuit are formed, spray gun and temperature sensor are located at the ingress that kiln hood cover in the New Type Dry-process Cement Production equipment connects grate cooler, thereby pilot circuit can be controlled the discharge of spray gun according to the temperature of ingress, realization is to the chilling cooling of grog, the exit clinker temperature of grate cooler is reduced to below 100 ℃, simultaneously, the vaporize water that produces enters kiln under the suction function of system, the water-gas reaction that pyrolytic decomposition produces in the kiln calcining, realize comprehensive utilization of energy, to save energy, improve clinker strength, improve calcining process and play positive promoter action.
The present invention has following positively effect:
1, the kiln discharge clinker temperature can reduce below 100 ℃.
2, the grog production energy consumption reduces 5-10%.
3, the grog grindability is good.Go into to grind clinker temperature low, can reduce slimeball and material agglomeration in the mill; Fast cold grog fragility is big, and tiny crack is many, easily pulverizes.Can improve cement grinding mill output 5-10%, grinding pow consumption reduces 2-3KWh/t cement.
4, clinker quality improves: the grog speed of cooling is accelerated, the actual C of grog
3S content improves, and the grog crackle, defective is many, activity is high, can make clinker strength raising 2-4MPa.Avoid powder phenomenon-tion simultaneously, the kiln discharge clinker dust is few, reduces dust discharge and loss of material.
5, improve the grog stability: the grog chilling, MgO, fCaO crystallization are tiny, and part fCaO and water or steam chemical combination are cleared up.
6, water-gas reaction can be quickened hard coal and burning environment of inferior quality coal, and rotary kiln burning hard coal and low grade coal are had short burning effect.
7, steam enters clinkering zone and decomposes and can suitably reduce flame temperature, reduces the NOx discharging.One of measure that the Europe cement burning reduces discharging NOx is exactly to adopt the interior water spray means of kiln to reduce flame temperature.
It is low to the invention solves present grate cooler cooling efficiency, and clinker temperature is higher, and the problem of thermal waste is cooling off and carrying out energy-conservation well combining.The present invention is mainly used in the chilling cooling of in the New Type Dry-process Cement Production equipment grog being carried out.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of shower nozzle;
Fig. 3 is pilot circuit figure.
Embodiment
Structure of the present invention as shown in Figure 1.1 is pilot circuit among the figure, and 2 is frequency transformer, and 3 is water tank, 4 is motor, and 5 is high-pressure hydraulic pump, and 6 is spray gun, 7 is air compressor, and 8 is temperature sensor, and 9 is grate cooler, 10 is the kiln hood cover, and 11 is rotary kiln, 12 decomposing furnaces, 13 micro computers, 14 is pressure transmitter, and 15 is water flow sensor, and 16 is chain mat machine.Wherein, grate cooler 9, kiln hood cover 10, rotary kiln 11, decomposing furnace 12, chain mat machine 16 are the integral part in the existing New Type Dry-process Cement Production equipment.At kiln hood cover 10 tops temperature sensor 8 is installed, in kiln hood cover 10 bottoms and grate cooler 9 flue gas cover tops spray gun 6 is installed, spray gun 6 quantity are according to the output and the clinker temperature decision of kiln, spray gun 6 connects by the orchid that sends out in installation site perforate welding, the welding of sending out an end and tapping blue, the other end and lance tube welding, two halves are sent out orchid and are connected by bolt, two joints are arranged on the shower nozzle of spray gun, one connects water-cooled tube, and one connects compressed air pipe, and water-cooled tube links to each other with high-pressure hydraulic pump 5 water outlets, tracheae links to each other with air compressor 7 air outlets, and two joints are equipped with the wear-resisting withstand voltage heat resisting pipe that is threaded.Temperature sensor 8 can be a thermopair, is fixed on kiln hood cover 10 tops, and temperature sensor 8 connects temperature controller, temperature controller connection control circuit 1 by compensating lead wire.Temperature controller is set with the upper and lower limit temperature, by pilot circuit 1 control of conversion device 2, frequency transformer 2 control motors 4, frequency transformer 2 and motor 4 are worked in the upper and lower limit temperature range that temperature controller is set, frequency transformer 2 frequencies change with variation of temperature, and motor 4 changes its rotating speed according to the variation of frequency.Motor 4 drives high-pressure hydraulic pump 5 work by vee-belt, the below of high-pressure hydraulic pump 5 is fixed with water tank 3, high-pressure pump 5 is imported spray gun 6 with the water pressurization back that sucks by high-pressure water pipe, another import input pressurized air of shower nozzle in the water input, water is atomized, spray into after spray gun 6 makes water fogging on the castor bed of grate cooler 9, the high temperature chamotte and the bed of combing are lowered the temperature.Pressure transmitter 14 and water flow sensor 15 are installed on the water outlet of high-pressure hydraulic pump 4, and water flow sensor 15 is a water ga(u)ge.
Shower nozzle as shown in Figure 2.17 is tubular shower nozzle base among the figure, and 18 is rear end cap, and 19 for regulating cone valve, and 20 is adjusting screw(rod), and 21 is nozzle, and 22 are water supply connector, and 23 is inlet suction port, and 24 is retaining screw, and 25 is tommy.Shower nozzle is made of tubular shower nozzle base 17, adjusting cone valve 19, adjusting screw(rod) 20, water supply connector 22, inlet suction port 23, bell nozzle 21 and rear end cap 18, bell nozzle 21 usefulness are threaded and are fixed on tubular shower nozzle base 17 excircles, the conical surface of regulating cone valve 19 cooperates with bell nozzle 21, adjusting cone valve 19 usefulness are threaded and are fixed on the rear end cap 18, and water supply connector 22, inlet suction port 23 are fixed on shower nozzle base 17 excircles.Regulate the position of cone valve 19 vertically, can change the injection flow rate of nozzle 21.
Pilot circuit as shown in Figure 3.Pilot circuit 1 is made up of programmable logic controller (PLC) 27, CVF-J215W frequency transformer (VVVF) 2 and the testing circuit of singlechip controller 26, S7-200CN band expansion module.Singlechip controller 26 is made up of single chip computer AT 89C51 and peripheral interface circuit, and input interface circuit is made up of coupling mechanism and accessory circuit, and output interface circuit is made up of triode and rly..Testing circuit is made up of temperature, pressure and discharge testing circuit.Temperature sensing circuit is made up of temperature sensor 8 and temperature controller, and temperature sensor 8 is installed in the ingress that the kiln hood cover connects grate cooler, and temperature controller is connected with SCM peripheral interface circuit, Frequency Converter Control end and programmable logic controller expansion module.Pressure detection circuit is made up of pressure transmitter 14 and pressure controller, and pressure controller is connected with the programmable logic controller expansion module.The discharge testing circuit is made up of water flow sensor 15 and discharge controller, and the discharge controller is connected with the programmable logic controller expansion module.Micro computer 13 is connected with programmable logic controller (PLC) 27 by data-interface.
The temperature upper and lower limit that temperature measurer is set is by switch AL
1And AL
2The input aperture X6 of order sheet machine controller respectively, three-phase supply A, B, C meet input terminus R, S, the T of frequency transformer through contactor KM, and output terminal U, the V of frequency transformer, W connect motor M.Be connected to start-stop push button SB1 and the SB2 of converter power supply KM on X1 and the X3 respectively, be connected to the working coil of KM on the delivery port Y3, on the X5 of the input aperture of singlechip controller, be connected to the fault normally opened contact TA of frequency transformer 1, when system breaks down, this normally opened contact TA closure, the pilot lamp HD2 that is connected on the singlechip controller delivery port Y0 is bright, and system quits work automatically.The water inlet of water tank 3 is controlled by magnetic valve KA11, water level is controlled automatically by liquid level relay YW1 in the water tank 3, the input aperture X4 of the secondary contact order sheet machine controller of the liquid level relay YW1 of water tank 3, the delivery port Y5 of entering water electromagnetic valve KA11 working coil order sheet machine controller.
The PLC input aperture is connected to the frequency transformer operation for 0.0,0.1 mouthful and enables the break-make button, and SB3, SB4, PLC delivery port Y0.0 are connected to the working coil that the frequency transformer operation enables relay KA1.Y0.0-Y0.7 can set different temperature output valves, in order to regulate spray flow.Temperature controller, tensimeter, under meter are received the PLC module, and PLC27 is connected realization communication with micro computer 13, and micro computer 13 deposits temperature, pressure, traffic timing in hard disk, the form of historical data with curve and form shown, and can set the upper and lower limit alarming value.
Principle of work: the sky that closes is opened QF1, presses SB1, KM adhesive, and frequency transformer 2 is connected power supply, pilot lamp HL3 is bright, for motor starting is got ready, enable starting push button SB3 by low-converter, the KA1 adhesive, as this moment temperature in span of control, temperature controller upper and lower limit contact, AL1, AL2 are in off-state, the KA10 adhesive, frequency transformer 2 operations, water pump begins spray cooling.Press operation stop button SB4, frequency transformer 2 quits work, and stops water spray in the rotary kiln, presses SB2 frequency transformer 2 and cuts off power supply.
Be provided with three water levels in upper, middle and lower in the water tank 3, i.e. H among Fig. 3, C, L, single-phase air switch QF2 closes, liquid level relay YW1 work, be lower than lower limit water level L feelings subordinate, liquid level relay YW1 secondary contact closure, the working coil work of magnetic valve KA11, magnetic valve KA11 gets electric adhesive, water inlet pipe is opened into water, and when reaching upper limit water level H, the secondary contact of liquid level relay YW1 disconnect, magnetic valve KA11 dead electricity disconnects, and water inlet stops.
Claims (8)
1, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove, it is characterized in that: comprise spray gun (6), the compressed air source (7) that links to each other with this spray gun (6), high-pressure hydraulic pump (5), motor (4) and water tank (3), by the pilot circuit (1) of control spray gun (6) current formed of programmable logic controller (27), frequency transformer (2) and testing circuit of singlechip controller (26), band expansion module, spray gun (6) is installed in the ingress of kiln hood cover (10) connection grate cooler (9); Singlechip controller (26) is made up of micro-chip and peripheral interface circuit; Testing circuit is made up of temperature, pressure and discharge testing circuit; Temperature sensing circuit is made up of temperature sensor (8) and temperature controller, temperature sensor (8) is installed in the ingress that kiln hood cover (10) connects grate cooler (9), and temperature controller is connected with SCM peripheral interface circuit, Frequency Converter Control end and programmable logic controller expansion module; Pressure detection circuit is made up of pressure transmitter and pressure controller, and pressure controller is connected with the programmable logic controller expansion module; The discharge testing circuit is made up of water flow sensor and discharge controller, and the discharge controller is connected with the programmable logic controller expansion module; Pressure transmitter and water flow sensor are installed on high-pressure hydraulic pump (5) water outlet.
2, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 is characterized in that: the exit that connects grate cooler (9) at described kiln hood cover (10) is provided with temperature sensor (8), and this temperature sensor (8) is connected with temperature controller.
3, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 and 2 is characterized in that: described spray gun (6) is formed by shower nozzle with by the wear-resisting withstand voltage heat resisting pipe that is threaded; Shower nozzle is made of tubular shower nozzle base (17), adjusting cone valve (19), adjusting screw(rod) (20), water supply connector (22), inlet suction port (23), bell nozzle (21) and rear end cap (18), bell nozzle (21) is fixed on being threaded on tubular shower nozzle base (17) excircle, the conical surface of regulating cone valve (19) cooperates with bell nozzle (21), regulate cone valve (19) and be fixed on being threaded on the rear end cap (18), water supply connector (22), inlet suction port (23) are fixed on shower nozzle base (17) excircle.
4, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 and 2 is characterized in that: also comprise micro computer (13) in the described pilot circuit, micro computer (13) is connected with programmable logic controller by data-interface.
5, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 and 2 is characterized in that: described temperature sensor (8) is a thermopair.
6, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 and 2 is characterized in that: fixedly below the high-pressure hydraulic pump (5), water tank (3) internal fixing has water level automatic control device to described water tank (3).
7, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 and 2 is characterized in that: described spray gun (6) stretches into position on the interior castor bed of grate cooler (9).
8, a kind of quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove according to claim 1 and 2 is characterized in that: described spray gun (6) is to be arranged side by side castor bed top in grate cooler (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100527325A CN101289289A (en) | 2007-07-13 | 2007-07-13 | Quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100527325A CN101289289A (en) | 2007-07-13 | 2007-07-13 | Quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove |
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| Publication Number | Publication Date |
|---|---|
| CN101289289A true CN101289289A (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100527325A Pending CN101289289A (en) | 2007-07-13 | 2007-07-13 | Quenching, temperature-reducing and self-controlling device for chamotte of energy-conserving rotating stove |
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| CN (1) | CN101289289A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107894B (en) * | 2009-12-28 | 2013-01-02 | 中国铝业股份有限公司 | Alumina clinker cooling device |
| CN104446054A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method capable of improving 28-day strength of clinker |
| CN112444133A (en) * | 2019-08-27 | 2021-03-05 | 湖北宜飞复合新材料有限公司 | Water spraying device for cement clinker cooling machine |
-
2007
- 2007-07-13 CN CNA2007100527325A patent/CN101289289A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107894B (en) * | 2009-12-28 | 2013-01-02 | 中国铝业股份有限公司 | Alumina clinker cooling device |
| CN104446054A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method capable of improving 28-day strength of clinker |
| CN112444133A (en) * | 2019-08-27 | 2021-03-05 | 湖北宜飞复合新材料有限公司 | Water spraying device for cement clinker cooling machine |
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Open date: 20081022 |