CN211111742U - Control system for process of producing magnesite light burning powder by scintillation boiling calciner - Google Patents
Control system for process of producing magnesite light burning powder by scintillation boiling calciner Download PDFInfo
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- CN211111742U CN211111742U CN201921994090.5U CN201921994090U CN211111742U CN 211111742 U CN211111742 U CN 211111742U CN 201921994090 U CN201921994090 U CN 201921994090U CN 211111742 U CN211111742 U CN 211111742U
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Abstract
the utility model provides a burning furnace production magnesite light burning powder process control system is forged in scintillation boiling, this system include host computer, P L C controller, drying system, preheat system, light burning system, cooling system, the utility model discloses a production process accurate control of magnesite light burning powder carries out accurate measurement to the material loading, carries out accurate measurement to the gas and the air distribution of high temperature combustion chamber, carries out the analysis to tail gas component to guarantee that the burning is complete, the accurate control of energy consumption index, product quality is stable, and full production line is by P L C system control automatic operation, and unmanned aerial vehicle operation has reached energy saving and emission reduction and has saved artificial effect.
Description
Technical Field
The utility model belongs to the technical field of magnesite, a scintillation boiling calciner production magnesite light burnt powder process control system is provided very much.
Background
At present, the production process of producing magnesite light-burned powder by a flash fluidized bed combustion furnace is an outdated simple power distribution design, and all operations are controlled by an operator on a cabinet body by using simple button type operation. The simple operation mode determines that the accurate measurement is not carried out in the feeding process, the temperature control is completely operated by manual observation, and the air distribution of the combustion device is also simple mechanical interlocking control. Therefore, the current situation that the production capacity and the energy consumption cannot be accurately calculated and the full combustion of the fuel gas of the combustor cannot be controlled is generated. Energy waste, pollution caused by incomplete combustion and unstable product quality can be caused.
SUMMERY OF THE UTILITY MODEL
in order to solve the technical problem, the utility model aims at providing a burning furnace production magnesite light burnt powder process control system is forged in scintillation boiling has realized that full production line is by the automatic operation of PL C system control, and no manual operation has reached energy saving and emission reduction and has saved artificial effect.
in order to realize the aim, the utility model adopts the following technical proposal that the process control system for producing magnesite light burning powder by the scintillation boiling calciner comprises an upper computer, a P-L-C controller, a drying system, a preheating system, a light burning system and a cooling system;
The drying system comprises a scraper plate feeding machine, a belt conveyor, a belt scale, a drying and feeding machine, a flash evaporation dryer, drying cyclones, a drying cloth bag, a drying induced draft fan and a first chimney;
The preheating system comprises a primary preheating device, a secondary preheating device and a tertiary preheating device;
The light burning system comprises an automatic burner, a high-temperature combustion chamber, a first-stage calcining furnace, a second-stage calcining furnace and a high-temperature recovery device;
The cooling system comprises a primary cooling device, a secondary cooling device, a cooling recovery cloth bag, a cooling induced draft fan and a storage bin;
The drying system comprises a drying system, a scraper feeder, a belt scale, a flash dryer, a drying cyclone, a drying induced draft fan, a first chimney and a second chimney, wherein the scraper feeder of the drying system is connected with the belt scale through a belt conveyor, the belt scale is communicated with a feed inlet of the drying feeder through a pipeline, the drying feeder is connected with the flash dryer, an air outlet of the flash dryer is communicated with an air inlet of the drying cyclone through a pipeline, an air outlet of the drying cyclone is communicated with an air inlet of a drying cloth bag through a pipeline, an air outlet of the drying cloth bag is communicated with the drying induced draft fan through a;
An air outlet of a third-stage preheating device of the preheating system is communicated with an air inlet of a second-stage preheating device through a pipeline, an air outlet of the second-stage preheating device is communicated with an air inlet of a first-stage preheating device through a pipeline, and an air outlet of the first-stage preheating device is communicated with an air inlet pipe of an air inlet of the drying machine through a pipeline;
The discharge port of the drying cyclone is communicated with the pipeline of the air inlet of the primary preheating device, the discharge port of the drying cloth bag is communicated with the pipeline of the air inlet of the secondary preheating device after sequentially passing through 3 screw conveyors, the discharge port at the bottom of the primary preheating device is communicated with the pipeline of the air inlet of the secondary preheating device through a pipeline, the material in the primary preheating device is conveyed into the secondary preheating device from the primary preheating device, the discharge port at the bottom of the secondary preheating device is communicated with the pipeline of the air inlet of the tertiary preheating device through a pipeline, the material in the secondary preheating device is conveyed into the tertiary preheating device,
An automatic burner is installed on one side of a high-temperature combustion chamber of the light burning system, the automatic burner is connected with a primary fan, the other side of the high-temperature combustion chamber is sequentially connected with a first-stage calcining furnace and a second-stage calcining furnace, a bottom discharge port of a third-stage preheating device is communicated with a feed port of the high-temperature combustion chamber through a pipeline, preheated materials are conveyed into the high-temperature combustion chamber, an air outlet of the second-stage calcining furnace is communicated with an air inlet of a high-temperature recovery device through a pipeline, high-temperature hot air passing through an air outlet of the second-stage calcining furnace carries the materials into the high-temperature recovery device, and an air outlet of;
The air inlet of a primary cooling device of the cooling system is provided with a first air inlet pipe for conveying outdoor clean air, the discharge port at the bottom of the high-temperature recovery device is communicated with the first air inlet pipe through a pipeline, the air inlet of a secondary cooling device is provided with a second air inlet pipe for conveying outdoor clean air, the discharge port at the bottom of the cooling device is communicated with the second air inlet pipe through a pipeline, the air outlet of the primary cooling device and the air outlet of the secondary cooling device are both communicated with the air inlet of a cooling recovery cloth bag through pipelines, the air outlet of the cooling recovery cloth bag is communicated with a cooling induced draft fan through a pipeline, the cooling induced draft fan is communicated with a second chimney through a first branch pipeline to discharge tail gas outdoors, and simultaneously, the tail gas is communicated with a primary air fan of a light burning system; the discharge hole at the bottom of the secondary cooling device and the discharge hole at the bottom of the cooling recovery cloth bag are respectively communicated with the storage bin through pipelines;
The belt weigher is provided with a feeding metering device, the drying and feeding machine is provided with a material stirring device, an air inlet of the flash dryer is connected with an air inlet pipe, the air inlet pipe is provided with an air-to-air electric regulating valve, a first pressure transmitter and a first temperature transmitter are arranged at the air inlet, a second temperature transmitter is arranged at the air outlet, the flash dryer is additionally connected with a spray water header pipe, and the spray water header pipe is provided with a spray electric regulating valve and a spray manual regulating valve;
A third temperature transmitter and a fourth temperature transmitter are respectively arranged at an air inlet and an air outlet of a drying cloth bag in the drying system, a drying pulse is arranged above the drying cloth bag and is communicated with a compressed air conveying main pipe through a pipeline, a first filter, a first air inlet manual ball valve and a first manual pressure regulating valve are arranged on the pipeline connected with the compressed air conveying main pipe, a third air distribution valve is arranged at the air inlet of the drying cloth bag, a second pressure transmitter is also arranged at the air outlet of the drying cloth bag, and a first differential pressure transmitter is arranged on the body of the drying cloth bag;
A first air inlet flow meter and a tail gas component analysis device are arranged at an air inlet of the drying induced draft fan;
The air outlets of the primary preheating device, the secondary preheating device and the tertiary preheating device in the preheating system are respectively provided with a fifth temperature transmitter, a sixth temperature transmitter and a seventh temperature transmitter;
The high-temperature combustion chamber in the light burning system is provided with an eighth temperature transmitter and a third pressure transmitter, the feed inlet of the first-stage calcining furnace, the feed inlet of the second-stage calcining furnace and the air outlet of the second-stage calcining furnace are respectively provided with a ninth temperature transmitter, a tenth temperature transmitter and an eleventh temperature transmitter, the inlet of the automatic burner is connected with a gas conveying main pipe, gas is conveyed into the high-temperature combustion chamber through the automatic burner, a gas metering device and a natural gas component online detector are arranged on the gas conveying main pipe, and a second air inlet flow meter is arranged at the air inlet of the primary air fan;
A twelfth temperature transmitter, a fourth pressure transmitter and a first air distribution valve are arranged on a first air inlet pipe of an air inlet of a primary cooling device in the cooling system, a thirteenth temperature transmitter, a fifth pressure transmitter and a second air distribution valve are arranged on a second air inlet pipe of an air inlet of a secondary cooling device, a cooling recovery cloth bag is communicated with a compressed air conveying main pipe through a pipeline, a second filter and a second manual pressure regulating valve of a second air inlet manual ball valve are arranged on the pipeline connected with the compressed air conveying main pipe, in addition, a fourteenth temperature transmitter and a fifteenth temperature transmitter are respectively arranged at the air inlet and the air outlet of the cooling recovery cloth bag, a fourth air distribution valve is also arranged at the air inlet of the cooling recovery cloth bag, a second differential pressure transmitter is arranged on the cooling recovery cloth bag body, and a sixteenth temperature transmitter and a seventeenth temperature transmitter are respectively arranged at a discharge port of the primary cooling device and a discharge port of the, a third air inlet flow meter is arranged at the air inlet of the cooling draught fan;
each temperature transmitter, each pressure transmitter, each differential pressure transmitter, each filter, each air inlet flowmeter, each air distribution valve, a feeding metering device, an air-to-air electric regulating valve, a fuel gas metering device, a natural gas component online detector, a tail gas component analysis device and a water spraying electric regulating valve are respectively connected with a PLC (programmable logic controller), and the PLC is connected with an upper computer;
the material discharging valve at the bottom of the drying cyclone, the drying cloth bag, the primary preheating device, the secondary preheating device, the tertiary preheating device, the high-temperature recovery device, the primary cooling device, the secondary cooling device, the cooling recovery cloth bag and the storage bin is provided with a variable frequency speed regulating device, in addition, the variable frequency speed regulating device is also arranged on the drying feeder, the material stirring device, the drying draught fan, the primary fan and the cooling draught fan to control the rotating speed, and the variable frequency speed regulating device is respectively connected with the P L C controller.
furthermore, the automatic burner and an eleventh temperature transmitter at the air outlet of the secondary calciner are interlocked through a P L C controller, the flame size of the automatic burner is controlled according to the temperature at the air outlet of the secondary calciner, the P L C controller adjusts the ratio of the gas to the primary air volume according to the gas flow feedback value of the gas metering device and the air volume feedback value of a second air inlet flow meter of the primary air fan, and after the adjustment is fixed and adjusted by the mechanical interlocking, the variable frequency speed adjusting device of the primary air fan is finely adjusted, so that the full combustion is ensured.
furthermore, the variable frequency speed regulation device of the drying induced draft fan is interlocked with a third pressure transmitter of the high-temperature combustion chamber through a P L C controller, and the P L C controller adjusts the air volume of the drying induced draft fan through the variable frequency speed regulation device according to a pressure feedback value of the third pressure transmitter to ensure that the pressure of the high-temperature combustion chamber is-150 Pa-50 Pa.
furthermore, the variable frequency speed regulation device of the cooling draught fan is interlocked with a fourth pressure transmitter of the air inlet of the primary cooling device through a P L C controller, and the P L C controller adjusts the air volume of the cooling draught fan through the variable frequency speed regulation device according to the pressure feedback value of the fourth pressure transmitter, so that the pressure of the air inlets of the primary cooling device and the secondary cooling device is ensured to be less than-1200 Pa.
furthermore, a third air distribution valve of the air inlet of the drying cloth bag and an air-to-air electric control valve of the air inlet of the flash evaporation dryer are linked with a third temperature transmitter of the air inlet of the drying cloth bag through a P L C controller, when the temperature is higher than 200 ℃, the third air distribution valve of the air inlet of the drying cloth bag is opened, the opening degree is controlled by the temperature of the third temperature transmitter of the air inlet of the drying cloth bag, when the temperature exceeds 280 ℃, the third air distribution valve is opened to ensure that the safety of the filter bag does not exceed the use temperature, in addition, the drying pulse is linked with a first differential pressure transmitter on the drying cloth bag through the P L C controller, when the resistance exceeds 1000Pa, the pulse is started, and the cycle is carried.
furthermore, a fourth air distribution valve of an air inlet of the cooling and recycling cloth bag is interlocked with a fourteenth temperature transmitter at the air inlet of the cooling and recycling cloth bag through a PLC (programmable logic controller), the fourth air distribution valve is opened when the temperature is higher than 240 ℃, the opening degree is controlled by the temperature of the fourteenth temperature transmitter at the air inlet of the cooling and recycling cloth bag, so that the safety of the filter bag is ensured not to exceed the use temperature, a pulse of the cooling and recycling cloth bag is arranged on the cooling and recycling cloth bag, the pulse of the cooling and recycling cloth bag is interlocked with a second differential pressure transmitter on the cooling cloth bag, and the pulse is started when the resistance exceeds 1000Pa, so that the cycle.
compared with the prior art, the utility model has the advantages of the utility model discloses a production process accurate control of magnesite light-burned powder carries out the accurate measurement to the material loading, carries out the accurate measurement to the gas and the air distribution of high temperature combustion chamber, carries out the analysis to tail gas component to guarantee that the burning is complete, the accurate control of energy consumption index, product quality is stable, full production line is by the automatic operation of P L C system control, and no manual operation has reached energy saving and emission reduction and has saved artificial effect.
Drawings
Fig. 1 is a schematic structural view of the present invention;
In the figure: 1-scraper feeding machine, 2-belt conveyor, 3-belt scale, 4-drying feeder, 5-flash dryer, 6-drying cyclone, 7-drying cloth bag, 71-drying pulse, 8-drying induced draft fan and 9-first chimney;
10-a first-stage preheating device, 11-a second-stage preheating device and 12-a third-stage preheating device;
13-an automatic combustor, 14-a high-temperature combustion chamber, 15-a primary calciner, 16-a secondary calciner and 17-a high-temperature recovery device;
18-a primary cooling device, 19-a secondary cooling device, 20-a cooling recovery cloth bag, 21-a cooling draught fan, 22-a storage bin, 23-a first air inlet pipe, 24-a second air inlet pipe, 25-a first branch pipeline, 26-a second branch pipeline, 27-a second chimney and 28-a primary air fan; 29-an air inlet pipe; 30-a compressed air conveying main pipe, 31-a fuel gas conveying main pipe, 32-a spiral conveyor and 33-a variable frequency speed regulating device; 34-a main spray water pipe;
3001-charging metering device, 4001-material stirring device, 5001-first pressure transmitter, 5002-first temperature transmitter, 5003-second temperature transmitter, 5004-water spraying electric regulating valve, 5005-water spraying manual regulating valve, 7001-third temperature transmitter, 7002-fourth temperature transmitter, 7003-first filter, 7004-first air inlet manual ball valve, 7005-first manual pressure regulating valve, 7006-second pressure transmitter, 7007-first differential pressure transmitter and 7008-third air distribution valve; 8001-first inlet air flow meter, 8002-tail gas component analysis device, 1001-fifth temperature transmitter, 1101-sixth temperature transmitter, 1201-seventh temperature transmitter, 1401-eighth temperature transmitter, 1402-third pressure transmitter, 1501-ninth temperature transmitter, 1601-tenth temperature transmitter, 1602-eleventh temperature transmitter, 3101-gas metering device, 3102-natural gas component on-line detector, 2801-second inlet air flow meter, 2301-twelfth temperature transmitter, 2302-fourth pressure transmitter, 2303-first air distribution valve, 2401-thirteenth temperature transmitter, 2402-fifth pressure transmitter, 2403-second air distribution valve, 2001-second filter, 2002-second inlet air manual ball valve, 2003-second manual pressure regulating valve, 2004-fourteenth temperature transmitter, 2005-fifteenth temperature transmitter, 2006-second differential pressure transmitter, 2007-fourth air distribution valve, 1801-sixteenth temperature transmitter, 1901-seventeenth temperature transmitter, 2901-air electric control valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A control system for a process of producing magnesite light burning powder by a scintillation boiling calciner comprises an upper computer, a P L C controller, a drying system, a preheating system, a light burning system and a cooling system;
The drying system comprises a scraper plate feeding machine 1, a belt conveyor 2, a belt scale 3, a drying feeder 4, a flash evaporation dryer 5, a drying cyclone 6, a drying cloth bag 7, a drying induced draft fan 8 and a first chimney 9;
The preheating system comprises a primary preheating device 10, a secondary preheating device 11 and a tertiary preheating device 12;
The light burning system comprises an automatic combustor 13, a high-temperature combustor 14, a primary calciner 15, a secondary calciner 16 and a high-temperature recovery device 17;
The cooling system comprises a primary cooling device 18, a secondary cooling device 19, a cooling recovery cloth bag 20, a cooling induced draft fan 21 and a storage bin 22;
The scraper blade feeding machine 1 of the drying system is connected with the belt scale 3 through the belt conveyor 2, the belt scale 3 is communicated with a feeding hole of the drying feeder 4 through a pipeline, the drying feeder 4 is connected with the flash evaporation dryer 5, an air outlet of the flash evaporation dryer 5 is communicated with an air inlet of the drying cyclone 6 through a pipeline, an air outlet of the drying cyclone 6 is communicated with an air inlet of the drying cloth bag 7 through a pipeline, an air outlet of the drying cloth bag 7 is communicated with the drying induced draft fan 8 through a pipeline, the drying induced draft fan 8 is communicated with the first chimney 9 through a pipeline, and tail gas is discharged to outdoor atmosphere;
An air outlet of a third-stage preheating device 12 of the preheating system is communicated with an air inlet of a second-stage preheating device 11 through a pipeline, an air outlet of the second-stage preheating device 11 is communicated with an air inlet of a first-stage preheating device 10 through a pipeline, and an air outlet of the first-stage preheating device 10 is communicated with an air inlet pipe 29 of an air inlet of the flash drying machine through a pipeline;
The discharge port of the drying cyclone 6 is communicated with the pipeline of the air inlet of the primary preheating device 10, the discharge port of the drying cloth bag 7 is communicated with the pipeline of the air inlet of the secondary preheating device 11 after sequentially passing through 3 screw conveyors 32, the discharge port at the bottom of the primary preheating device 10 is communicated with the pipeline of the air inlet of the secondary preheating device 11 through a pipeline, materials in the primary preheating device 10 are conveyed into the secondary preheating device 11 from the primary preheating device 10, the discharge port at the bottom of the secondary preheating device 11 is communicated with the pipeline of the air inlet of the tertiary preheating device 12 through a pipeline, and the materials in the secondary preheating device 11 are conveyed into the tertiary preheating device 12;
An automatic burner 13 is installed on one side of a high-temperature combustion chamber 14 of the light burning system, the automatic burner 13 is connected with a primary fan, the other side of the high-temperature combustion chamber 14 is sequentially connected with a first-stage calcining furnace 15 and a second-stage calcining furnace 16, a bottom discharge port of a third-stage preheating device 12 is communicated with a feed port of the high-temperature combustion chamber 14 through a pipeline, preheated materials are conveyed into the high-temperature combustion chamber 14, an air outlet of the second-stage calcining furnace 16 is communicated with an air inlet of a high-temperature recovery device 17 through a pipeline, high-temperature hot air passing through an air outlet of the second-stage calcining furnace carries the materials into the high-temperature recovery device 17, and an air outlet of the high-;
A first air inlet pipe 23 for conveying outdoor clean air is arranged at an air inlet of a first-stage cooling device 18 of the cooling system, a discharge hole at the bottom of a high-temperature recovery device 17 is communicated with the first air inlet pipe 23 through a pipeline, a second air inlet pipe 24 for conveying outdoor clean air is arranged at an air inlet of a second-stage cooling device 19, and the bottom discharge port of the cooling device is communicated with a second air inlet pipe 24 through a pipeline, the air outlet of the primary cooling device 18 and the air outlet of the secondary cooling device 19 are communicated with the air inlet of a cooling recovery cloth bag 20 through pipelines, the air outlet of the cooling recovery cloth bag 20 is communicated with a cooling induced draft fan 21 through a pipeline, the cooling induced draft fan 21 is communicated with a second chimney 27 through a first branch pipeline 25 to discharge tail gas to the outside, meanwhile, the second branch pipeline 26 is communicated with a primary fan 28 of the light burning system and is conveyed to the light burning system; the discharge hole at the bottom of the secondary cooling device 19 and the discharge hole at the bottom of the cooling recovery cloth bag 20 are respectively communicated with the storage bin 22 through pipelines;
The belt scale 3 is provided with a charging metering device 3001, the drying and charging machine 4 is provided with a material stirring device 4001, an air inlet of the flash drying machine 5 is connected with an air inlet pipe 29, the air inlet pipe 29 is provided with an air-to-air electric regulating valve 2901, the air inlet is provided with a first pressure transmitter 5001 and a first temperature transmitter 5002, the air outlet is provided with a second temperature transmitter 5003, the flash drying machine 5 is additionally connected with a spray water header pipe 34, and the spray water header pipe 34 is provided with a spray water electric regulating valve 5004 and a spray water manual regulating valve 5005;
A third temperature transmitter 7001 and a fourth temperature transmitter 7002 are respectively arranged at an air inlet and an air outlet of a drying cloth bag 7 in the drying system, a drying pulse 71 is arranged above the drying cloth bag 7, the drying pulse 71 is communicated with a compressed air conveying main pipe 30 through a pipeline, a first filter 7003, a first air inlet manual ball valve 7004 and a first manual pressure regulating valve 7005 are arranged on the pipeline connected with the compressed air conveying main pipe 30, a third air distribution valve 7008 is arranged at the air inlet of the drying cloth bag 7, a second pressure transmitter 7006 is also arranged at the air outlet of the drying cloth bag 7, and in addition, a first differential pressure transmitter 7007 is arranged on the body of the drying cloth bag 7;
A first air inlet flow meter 8001 and a tail gas component analysis device 8002 are arranged at an air inlet of the drying induced draft fan 8;
The air outlets of the primary preheating device 10, the secondary preheating device 11 and the tertiary preheating device 12 in the preheating system are respectively provided with a fifth temperature transmitter 1001, a sixth temperature transmitter 1101 and a seventh temperature transmitter 1201;
A high-temperature combustion chamber 14 in the light burning system is provided with an eighth temperature transmitter 1401 and a third pressure transmitter 1402, a feed inlet of a first-stage calciner 15, a feed inlet of a second-stage calciner 16 and an air outlet of the second-stage calciner 16 are respectively provided with a ninth temperature transmitter 1501, a tenth temperature transmitter 1601 and an eleventh temperature transmitter 1602, an inlet of an automatic burner 13 is connected with a gas conveying main pipe 31, gas is conveyed into the high-temperature combustion chamber 14 through the automatic burner 13, a gas metering device 3101 and a natural gas component on-line detector 3102 are arranged on the gas conveying main pipe 31, and an air inlet of a primary fan 28 is provided with a second air inlet flow meter 2801;
A twelfth temperature transmitter 2301, a fourth pressure transmitter 2302 and a first air distribution valve 2303 are arranged on a first air inlet pipe 23 of an air inlet of a primary cooling device 18 in the cooling system, a thirteenth temperature transmitter 2401, a fifth pressure transmitter 2402 and a second air distribution valve 2403 are arranged on a second air inlet pipe 24 of an air inlet of a secondary cooling device 19, a cooling recovery cloth bag 20 is communicated with a compressed air conveying main pipe 30 through a pipeline, a second filter 2001, a second manual air inlet ball valve 2002 and a second manual pressure regulating valve 2003 are arranged on a pipeline connected with the compressed air conveying main pipe 30, a fourteenth temperature transmitter 2004 and a fifteenth temperature transmitter 2005 are arranged at an air inlet and an air outlet of the cooling recovery cloth bag 20 respectively, a fourth air distribution valve 2007 is arranged at an air inlet of the cooling recovery cloth bag 20, a second differential pressure transmitter 2006 is arranged on a body of the cooling recovery cloth bag 20, and a sixteenth temperature transmitter 2005 is arranged at a discharge port of the primary cooling device 18 and a discharge port of the secondary A third air inlet flowmeter 2101 for calculating the cooling temperature of the material is arranged at an air inlet of the cooling induced draft fan 21 of the transmitters 1801 and the seventeenth temperature transmitter 1901;
the temperature transmitters (a first temperature transmitter 5002, a second temperature transmitter 5003, a third temperature transmitter 7001, a fourth temperature transmitter 7002, a fifth temperature transmitter 1001, a sixth temperature transmitter 1101, a seventh temperature transmitter 1201, an eighth temperature transmitter 1401, a ninth temperature transmitter 1501, a tenth temperature transmitter 1601, an eleventh temperature transmitter 1602, a twelfth temperature transmitter 2301, a thirteenth temperature transmitter 2401, a fourteenth temperature transmitter 2004, a fifteenth temperature transmitter 2005, a sixteenth temperature transmitter 1801 and a seventeenth temperature transmitter 1901), the pressure transmitters (a first pressure transmitter 5001, a second pressure transmitter 7006, a third pressure transmitter 1402, a fourth pressure transmitter 2302 and a fifth pressure transmitter 2402), the differential pressure transmitters (a first differential pressure transmitter 7007 and a second differential pressure transmitter 2006), the filters (a first filter 7003 and a second filter 2001), the air intake flowmeters (a first air intake flowmeter 8001 and a second air intake flowmeter 2801), the air distribution valves (a first air distribution valve 2303, a second air distribution valve 2403, a third air distribution valve 2403 and a third air distribution valve 2408), the electric water injection and air distribution control and water and air distribution control devices are respectively connected with the electric feeding and the air distribution control device 3002.
the drying cyclone 6, the drying cloth bag 7, the primary preheating device 10, the secondary preheating device 11, the tertiary preheating device 2, the high-temperature recovery device 17, the primary cooling device 18, the secondary cooling device 19, the cooling recovery cloth bag 20 and a discharge valve at the bottom of the storage bin 22 are respectively provided with a variable frequency speed regulating device 33, in addition, the drying feeder 4, the material stirring device 4001, the drying induced draft fan 8, the primary air fan 28 and the cooling induced draft fan 21 are also respectively provided with the variable frequency speed regulating device 33 to control the rotating speed, the variable frequency speed regulating device 33 is respectively connected with the PLC, and the variable frequency speed regulating device 33 is respectively connected with the PLC.
The utility model discloses a material is walked to walk from drying system, is preheated system, light burning system to cooling system.
the automatic burner 13 and the eleventh temperature transmitter 1602 of the air outlet of the secondary calciner 16 are linked through a P L C controller, the flame size of the automatic burner 13 is controlled according to the temperature of the air outlet of the secondary calciner 16, the P L C controller adjusts the ratio of the gas to the primary air volume according to the gas flow feedback value of the gas metering device 3101 and the air volume feedback value of the second air inlet flow meter 2801 of the primary fan 28, and after the adjustment is fixed and adjusted by the mechanical linkage, the variable frequency speed adjusting device of the primary fan is finely adjusted, so that the full combustion is ensured.
the variable frequency speed regulation device of the drying induced draft fan 8 is interlocked with the third pressure transmitter 1402 of the high-temperature combustion chamber 14 through the PLC controller, and the PLC controller adjusts the air volume of the drying induced draft fan 8 through the variable frequency speed regulation device according to the pressure feedback value of the third pressure transmitter 1402, so that the pressure of the high-temperature combustion chamber 14 is guaranteed to be-150 Pa-50 Pa.
the variable frequency speed regulation device of the cooling draught fan 21 is interlocked with the fourth pressure transmitter 2302 of the air inlet of the primary cooling device 18 through the P L C controller, and the P L C controller adjusts the air volume of the cooling draught fan 21 through the variable frequency speed regulation device according to the pressure feedback value of the fourth pressure transmitter 2302 to ensure that the pressure of the air inlets of the primary cooling device 18 and the secondary cooling device 19 is less than-1200 Pa.
the third air distribution valve 7008 at the air inlet of the drying cloth bag 7 and the air-to-air electric control valve 2901 at the air inlet of the flash dryer 8 are interlocked with the third temperature transmitter 7001 at the air inlet of the drying cloth bag 7 through a P L C controller, when the temperature is higher than 200 ℃, the third air distribution valve 7008 at the air inlet of the drying cloth bag 7 is opened, the opening degree is controlled by the temperature of the third temperature transmitter 7001 at the air inlet of the drying cloth bag, when the temperature exceeds 280 ℃, the third air distribution valve 7008 is opened to ensure that the safety of a filter bag does not exceed the use temperature, in addition, the drying pulse 71 and the first differential pressure transmitter 7007 on the drying cloth bag 7007 are interlocked through the P L C controller, and when the resistance exceeds 1000Pa, the pulse is started to sequentially.
a fourth air distribution valve 2007 at the air inlet of the cooling and recovery cloth bag is interlocked with a fourteenth temperature transmitter 2006 at the air inlet of the cooling and recovery cloth bag 20 through a PLC controller, the fourth air distribution valve 2007 is opened when the temperature is higher than 240 ℃, the opening degree is controlled by the temperature of the fourteenth temperature transmitter 2006 at the air inlet of the cooling and recovery cloth bag, so that the safety of the filter bag is guaranteed not to exceed the use temperature, a cooling and recovery cloth bag pulse is arranged on the cooling and recovery cloth bag, the cooling and recovery cloth bag pulse is interlocked with a second differential pressure transmitter 2006 on the cooling cloth bag, and the pulse is started to circulate in sequence when the resistance exceeds 1000 Pa.
And a tail gas component analysis device 8002 arranged at an air inlet of the drying induced draft fan detects the content results of oxygen and carbon monoxide and transmits the content results to an upper computer to judge whether the combustion of the combustor is complete.
the utility model discloses an each electric element all feeds back the detected signal to the PLC controller, sets up the host computer demonstration by the PLC controller to set up parameter by the host computer and realize whole system normal operating by the control of the PLC controller.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. A control system for a process of producing magnesite light burning powder by a scintillation boiling calciner is characterized by comprising an upper computer, a P L C controller, a drying system, a preheating system, a light burning system and a cooling system;
The drying system comprises a scraper plate feeding machine, a belt conveyor, a belt scale, a drying and feeding machine, a flash evaporation dryer, drying cyclones, a drying cloth bag, a drying induced draft fan and a first chimney;
The preheating system comprises a primary preheating device, a secondary preheating device and a tertiary preheating device;
The light burning system comprises an automatic burner, a high-temperature combustion chamber, a first-stage calcining furnace, a second-stage calcining furnace and a high-temperature recovery device;
The cooling system comprises a primary cooling device, a secondary cooling device, a cooling recovery cloth bag, a cooling induced draft fan and a storage bin;
The drying system comprises a drying system, a scraper feeder, a belt scale, a flash dryer, a drying cyclone, a drying induced draft fan, a first chimney and a second chimney, wherein the scraper feeder of the drying system is connected with the belt scale through a belt conveyor, the belt scale is communicated with a feed inlet of the drying feeder through a pipeline, the drying feeder is connected with the flash dryer, an air outlet of the flash dryer is communicated with an air inlet of the drying cyclone through a pipeline, an air outlet of the drying cyclone is communicated with an air inlet of a drying cloth bag through a pipeline, an air outlet of the drying cloth bag is communicated with the drying induced draft fan through a;
An air outlet of a third-stage preheating device of the preheating system is communicated with an air inlet of a second-stage preheating device through a pipeline, an air outlet of the second-stage preheating device is communicated with an air inlet of a first-stage preheating device through a pipeline, and an air outlet of the first-stage preheating device is communicated with an air inlet pipe of an air inlet of the drying machine through a pipeline;
The discharge port of the drying cyclone is communicated with the pipeline of the air inlet of the primary preheating device, the discharge port of the drying cloth bag is communicated with the pipeline of the air inlet of the secondary preheating device after sequentially passing through 3 screw conveyors, the discharge port at the bottom of the primary preheating device is communicated with the pipeline of the air inlet of the secondary preheating device through a pipeline, the material in the primary preheating device is conveyed into the secondary preheating device from the primary preheating device, the discharge port at the bottom of the secondary preheating device is communicated with the pipeline of the air inlet of the tertiary preheating device through a pipeline, the material in the secondary preheating device is conveyed into the tertiary preheating device,
An automatic burner is installed on one side of a high-temperature combustion chamber of the light burning system, the automatic burner is connected with a primary fan, the other side of the high-temperature combustion chamber is sequentially connected with a first-stage calcining furnace and a second-stage calcining furnace, a bottom discharge port of a third-stage preheating device is communicated with a feed port of the high-temperature combustion chamber through a pipeline, preheated materials are conveyed into the high-temperature combustion chamber, an air outlet of the second-stage calcining furnace is communicated with an air inlet of a high-temperature recovery device through a pipeline, high-temperature hot air passing through an air outlet of the second-stage calcining furnace carries the materials into the high-temperature recovery device, and an air outlet of;
The air inlet of a primary cooling device of the cooling system is provided with a first air inlet pipe for conveying outdoor clean air, the discharge port at the bottom of the high-temperature recovery device is communicated with the first air inlet pipe through a pipeline, the air inlet of a secondary cooling device is provided with a second air inlet pipe for conveying outdoor clean air, the discharge port at the bottom of the cooling device is communicated with the second air inlet pipe through a pipeline, the air outlet of the primary cooling device and the air outlet of the secondary cooling device are both communicated with the air inlet of a cooling recovery cloth bag through pipelines, the air outlet of the cooling recovery cloth bag is communicated with a cooling induced draft fan through a pipeline, the cooling induced draft fan is communicated with a second chimney through a first branch pipeline to discharge tail gas outdoors, and simultaneously, the tail gas is communicated with a primary air fan of a light burning system; the discharge hole at the bottom of the secondary cooling device and the discharge hole at the bottom of the cooling recovery cloth bag are respectively communicated with the storage bin through pipelines;
The belt weigher is provided with a feeding metering device, the drying and feeding machine is provided with a material stirring device, an air inlet of the flash dryer is connected with an air inlet pipe, the air inlet pipe is provided with an air-to-air electric regulating valve, a first pressure transmitter and a first temperature transmitter are arranged at the air inlet, a second temperature transmitter is arranged at the air outlet, the flash dryer is additionally connected with a spray water header pipe, and the spray water header pipe is provided with a spray electric regulating valve and a spray manual regulating valve;
A third temperature transmitter and a fourth temperature transmitter are respectively arranged at an air inlet and an air outlet of a drying cloth bag in the drying system, a drying pulse is arranged above the drying cloth bag and is communicated with a compressed air conveying main pipe through a pipeline, a first filter, a first air inlet manual ball valve and a first manual pressure regulating valve are arranged on the pipeline connected with the compressed air conveying main pipe, a third air distribution valve is arranged at the air inlet of the drying cloth bag, a second pressure transmitter is also arranged at the air outlet of the drying cloth bag, and a first differential pressure transmitter is arranged on the body of the drying cloth bag;
A first air inlet flow meter and a tail gas component analysis device are arranged at an air inlet of the drying induced draft fan;
The air outlets of the primary preheating device, the secondary preheating device and the tertiary preheating device in the preheating system are respectively provided with a fifth temperature transmitter, a sixth temperature transmitter and a seventh temperature transmitter;
The high-temperature combustion chamber in the light burning system is provided with an eighth temperature transmitter and a third pressure transmitter, the feed inlet of the first-stage calcining furnace, the feed inlet of the second-stage calcining furnace and the air outlet of the second-stage calcining furnace are respectively provided with a ninth temperature transmitter, a tenth temperature transmitter and an eleventh temperature transmitter, the inlet of the automatic burner is connected with a gas conveying main pipe, gas is conveyed into the high-temperature combustion chamber through the automatic burner, a gas metering device and a natural gas component online detector are arranged on the gas conveying main pipe, and a second air inlet flow meter is arranged at the air inlet of the primary air fan;
A twelfth temperature transmitter, a fourth pressure transmitter and a first air distribution valve are arranged on a first air inlet pipe of an air inlet of a primary cooling device in the cooling system, a thirteenth temperature transmitter, a fifth pressure transmitter and a second air distribution valve are arranged on a second air inlet pipe of an air inlet of a secondary cooling device, a cooling recovery cloth bag is communicated with a compressed air conveying main pipe through a pipeline, a second filter and a second manual pressure regulating valve of a second air inlet manual ball valve are arranged on the pipeline connected with the compressed air conveying main pipe, in addition, a fourteenth temperature transmitter and a fifteenth temperature transmitter are respectively arranged at the air inlet and the air outlet of the cooling recovery cloth bag, a fourth air distribution valve is also arranged at the air inlet of the cooling recovery cloth bag, a second differential pressure transmitter is arranged on the cooling recovery cloth bag body, and a sixteenth temperature transmitter and a seventeenth temperature transmitter are respectively arranged at a discharge port of the primary cooling device and a discharge port of the, a third air inlet flow meter is arranged at the air inlet of the cooling draught fan;
each temperature transmitter, each pressure transmitter, each differential pressure transmitter, each filter, each air inlet flowmeter, each air distribution valve, a feeding metering device, an air-to-air electric regulating valve, a fuel gas metering device, a natural gas component online detector, a tail gas component analysis device and a water spraying electric regulating valve are respectively connected with a PLC (programmable logic controller), and the PLC is connected with an upper computer;
the material discharging valve at the bottom of the drying cyclone, the drying cloth bag, the primary preheating device, the secondary preheating device, the tertiary preheating device, the high-temperature recovery device, the primary cooling device, the secondary cooling device, the cooling recovery cloth bag and the storage bin is provided with a variable frequency speed regulating device, in addition, the variable frequency speed regulating device is also arranged on the drying feeder, the material stirring device, the drying draught fan, the primary fan and the cooling draught fan to control the rotating speed, and the variable frequency speed regulating device is respectively connected with the P L C controller.
2. the system for controlling the process of producing magnesite light burning powder by the scintillation boiling calciner as claimed in claim 1, wherein the automatic burner is interlocked with the eleventh temperature transmitter at the air outlet of the secondary calciner through a P L C controller, the flame size of the automatic burner is controlled according to the air outlet temperature of the secondary calciner, the P L C controller adjusts the ratio of the gas to the primary air volume according to the gas flow feedback value of the gas metering device and the air volume feedback value of the secondary air flow meter of the primary air fan, and after the adjustment is fixed and adjusted by the mechanical interlocking, the variable frequency speed adjusting device of the primary air fan is finely adjusted to ensure the full combustion.
3. the system for controlling the process of producing the magnesite light burning powder by the scintillation boiling calciner as claimed in claim 1, wherein the variable frequency speed regulation device of the drying induced draft fan is interlocked with the third pressure transmitter of the high temperature combustion chamber through a P L C controller, and the P L C controller adjusts the air volume of the drying induced draft fan through the variable frequency speed regulation device according to the pressure feedback value of the third pressure transmitter, so as to ensure that the pressure of the high temperature combustion chamber is-150 Pa-50 Pa.
4. the system for controlling the process of producing magnesite light burning powder by the scintillation boiling calciner as claimed in claim 1, wherein the variable frequency speed control device of the cooling draught fan is interlocked with the fourth pressure transmitter of the air inlet of the primary cooling device by a P L C controller, and the P L C controller adjusts the air volume of the cooling draught fan by the variable frequency speed control device according to the pressure feedback value of the fourth pressure transmitter, so as to ensure that the pressure of the air inlet of the primary cooling device and the air inlet of the secondary cooling device is less than-1200 Pa.
5. the system for controlling the process of producing magnesite light burning powder by the scintillation boiling calciner as claimed in claim 1, wherein the third air distribution valve at the air inlet of the drying cloth bag and the air-to-air electric control valve at the air inlet of the flash evaporation dryer are interlocked with the third temperature transmitter at the air inlet of the drying cloth bag by a P L C controller, when the temperature is higher than 200 ℃, the third air distribution valve at the air inlet of the drying cloth bag is opened, the opening degree is controlled by the temperature of the third temperature transmitter at the air inlet of the drying cloth bag, when the temperature exceeds 280 ℃, the third air distribution valve is opened to ensure that the safety of the filter bag does not exceed the use temperature, in addition, the drying pulse is interlocked with the first differential pressure transmitter on the drying cloth bag by the P L C controller, when the resistance exceeds 1000Pa, the pulse is started, and the process is.
6. the system for controlling the process of producing magnesite light burning powder by the scintillation boiling calciner as claimed in claim 1, wherein the fourth air distribution valve at the air inlet of the cooling recovery cloth bag is interlocked with the fourteenth temperature transmitter at the air inlet of the cooling recovery cloth bag by a P L C controller, when the temperature is higher than 240 ℃, the fourth air distribution valve is opened, the opening degree is controlled by the temperature of the fourteenth temperature transmitter at the air inlet of the cooling recovery cloth bag, so as to ensure that the safety of the filter bag does not exceed the use temperature, the cooling recovery cloth bag is provided with a cooling recovery cloth bag pulse, the cooling recovery cloth bag pulse is interlocked with the second differential pressure transmitter on the cooling cloth bag, and when the resistance exceeds 1000Pa, the pulse is started to cycle sequentially.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114291834A (en) * | 2022-01-05 | 2022-04-08 | 新疆圣雄电石有限公司 | Device for producing active calcium oxide by using wet-process carbide slag and using method |
| CN115218639A (en) * | 2022-06-08 | 2022-10-21 | 河钢承德钒钛新材料有限公司 | Method for intelligently producing tablet vanadium based on expert control system |
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2019
- 2019-11-19 CN CN201921994090.5U patent/CN211111742U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114291834A (en) * | 2022-01-05 | 2022-04-08 | 新疆圣雄电石有限公司 | Device for producing active calcium oxide by using wet-process carbide slag and using method |
| CN115218639A (en) * | 2022-06-08 | 2022-10-21 | 河钢承德钒钛新材料有限公司 | Method for intelligently producing tablet vanadium based on expert control system |
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