CN107314671A - The system and method for the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace - Google Patents
The system and method for the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace Download PDFInfo
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- CN107314671A CN107314671A CN201710640013.9A CN201710640013A CN107314671A CN 107314671 A CN107314671 A CN 107314671A CN 201710640013 A CN201710640013 A CN 201710640013A CN 107314671 A CN107314671 A CN 107314671A
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- rotary hearth
- hearth furnace
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/06—Details, accessories, or equipment peculiar to furnaces of this type
- F27B13/14—Arrangement of controlling, monitoring, alarm or like devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/16—Treatment involving a chemical reaction
- F27M2003/165—Reduction
Abstract
The invention provides a kind of real-time detection of atmosphere constituent in rotary hearth furnace and the system and method for combustion control, including：Pneumatic driving and reversing mechanism；Combined type is popped one's head in, and combined type probe can be moved back and forth on rail plate, and stretches into rotary hearth furnace to monitor the data of atmosphere constituent in rotary hearth furnace；Air source box, is moved, and the bleed pressure of cylinder is detected for controlling the source of the gas of cylinder so as to promote combined type to pop one's head on slide rail；Instrument main frame, pops one's head in for sending control instruction to air source box, combined type, to control combined type probe to be moved on slide rail and collect the Monitoring Data of combined type probe；PLC, is optimized for being optimized according to the control of the Monitoring Data of instrument main frame receipt progress combustion model, and sending a command to combustion controller to the burning condition in rotary hearth furnace.Each item data that the present invention is popped one's head in detection rotary hearth furnace by combined type, and comprehensive all data carry out being optimized to the burning situation in rotary hearth furnace for adaptability, improve efficiency of combustion.
Description
Technical field
Atmosphere constituent in control field, specifically exactly a kind of rotary hearth furnace is reclaimed the invention belongs to iron content solid waste to detect in real time
System and optimized control method of combustion.
Background technology
The Direct Reduction of carbonaceous pelletizing is sufficiently complex in rotary hearth furnace, and carbonaceous pelletizing is that a numerous materials coexist and phase
Interaction, the system reacted to each other is related to the physicochemical change of complexity.After raw material and binding agent mixing pressure ball, through drying baking
Dry to be transported in rotary hearth furnace siege, with the rotation of furnace bottom, furnace charge sequentially passes through heating zone, reducing zone, there are about more than 85%
Ferriferous oxide is reduced into metallized pellet, and numerous studies show, carbon-to-oxygen ratio, air-fuel ratio are that carbonaceous pelletizing is direct in influence furnace bottom
Reduce carbon containing too low in topmost factor, burner hearth, be unfavorable for the reduction of carbonaceous pelletizing, ultimately result in resultant metal rate mistake
It is low, reduce product quality.It is carbon containing it is too high can cause the increase of inner flue gas of the stove amount, bring excess load to steam generator system, the whole system of influence
The stability of system.Therefore, various atmosphere constituents in stove (particularly CO, CO are understood and grasped in the rotary hearth furnace course of work2、O2) contain
Measure significant to the production for instructing rotary hearth furnace.
At present, domestic and international rotary hearth furnace is using coal gas, air mass flow and the burning of temperature feedback control stove, and operating personnel are only
Burning situation can be optimized according to the temperature in stove, due to and can not obtain what pelletizing pyroreaction itself in stove was produced
CO contents, it is impossible to true to understand air-fuel ratio distribution, it is impossible to accurate control gas-air consumption, therefore, in order to obtain furnace atmosphere
Distribution, control Deoxidation Atmosphere in Furnace, reduction the energy consume excessively, instruct steady production, it is necessary to develop new technology.
The content of the invention
The purpose of the present invention, is to provide atmosphere constituent real-time detecting system and combustion control side in a kind of rotary hearth furnace
Method, rotary hearth furnace process is the most technique of current processing Metallurgical dust containing zinc commercial practice, by domestic and international extensive concern, mesh
Preceding domestic rotary hearth furnace technology is also immature, and further rotary hearth furnace process is studied, and atmosphere constituent is real in exploitation rotary hearth furnace
When detecting system and optimized control method of combustion to rotary hearth furnace process maturation and promote it is significant.Concrete scheme is such as
Under：
The system of the real-time detection of atmosphere constituent and combustion control in a kind of rotary hearth furnace, including：
Combustion controller；
Pneumatic driving and reversing mechanism, is fixed on the side wall of the rotary hearth furnace, and the pneumatic driving and reversing mechanism has rail plate, gas
Cylinder and propeller, the propeller are promoted by the cylinder and reciprocatingly slided on the rail plate；
Combined type is popped one's head in, on the rail plate, and the combined type probe can be past on the rail plate
Move again, and the through hole opened up by rotary hearth furnace side wall stretches into rotary hearth furnace to monitor the data of atmosphere constituent in rotary hearth furnace；
Air source box, is connected with combined type probe and pneumatic driving and reversing mechanism, for controlling the source of the gas of cylinder to promote compound
Formula probe is moved on slide rail, and the bleed pressure of cylinder is detected；
Instrument main frame, is connected with air source box, combined type probe, is popped one's head in for sending control instruction to air source box, combined type,
To control combined type probe to be moved on slide rail and collect the Monitoring Data of combined type probe；
PLC, is connected with instrument main frame, for carrying out combustion model according to the Monitoring Data of instrument main frame receipt
Control to optimize, and send a command to combustion controller and the burning condition in rotary hearth furnace is optimized.
Further, the combined type probe includes O2Monitoring modular, CO monitoring modulars, CO2Monitoring modular, temperature detection
Module.
Further, protection sleeve, the protective case are additionally provided with the lead to the hole site that rotary hearth furnace side wall is opened up
Cylinder is arranged on the travel path of the combined type probe, for protecting combined type to pop one's head in；
One end of the outer jointing jacket cylinder is fixed on the support frame of pneumatic driving and reversing mechanism, and the other end is arranged on rotary hearth furnace
In through hole.
Further, the protection sleeve is the cylinder for the double-decker being made of stainless steel and superalloy material, and
The protection sleeve is connected with the air source box；
The air source box is toward the protection sleeve purge gas, to be cleaned to the protection sleeve, and to described
The combined type probe in sleeve is protected to carry out purging cooling.
Further, it is provided with and renovates in the front end of the protection sleeve.
Further, the step of control of PLC progress combustion model optimizes includes：
CO content datas to collection are handled, and be will be less than 0 and are rejected more than 70% data；
To the O of collection2Content data is handled, and be will be less than 0 and is rejected more than 25% data；
To the CO of collection2Content data is handled, and be will be less than 0 and is rejected more than 30% data；
Processing data is carried out to the temperature data of collection, 0 is will be less than and the data more than 1400 DEG C is rejected；
Calculate the air-fuel ratio in rotary hearth furnace, the air-fuel ratio=rotary hearth furnace air inlet amount：Into coal gas amount；
According to formula theoretical air requirement V0=1/21*CO content datas, amount of actual air for combustion V=aV0Calculate as industrial furnace
The coefficient of excess air a in exit；
According to temperature data, O2Content data, CO2It is bent that content data, air-fuel ratio, coefficient of excess record temperature in rotary hearth furnace
Line and various content curves, and combustion controller is sent a control signal to, with the air being adjusted into rotary hearth furnace and combustion gas ratio
Example, realizes optimal combustion control；
After any number exceeds predetermined threshold value, alarm signal is sent.
The method that the present invention also provides a kind of real-time detection of atmosphere constituent in rotary hearth furnace and combustion control, including it is as follows
Step：
Gather temperature data, CO content datas, the O of rotary hearth furnace2Content data, CO2Content data；
CO content datas to collection are handled, and be will be less than 0 and are rejected more than 70% data；
To the O of collection2Content data is handled, and be will be less than 0 and is rejected more than 25% data；
To the CO of collection2Content data is handled, and be will be less than 0 and is rejected more than 30% data；
Processing data is carried out to the temperature data of collection, 0 is will be less than and the data more than 1400 DEG C is rejected；
Calculate the air-fuel ratio in rotary hearth furnace, the air-fuel ratio=rotary hearth furnace air inlet amount：Into coal gas amount；
According to formula theoretical air requirement V0=1/21*CO content datas, amount of actual air for combustion V=aV0Calculate as industrial furnace
The coefficient of excess air a in exit；
According to temperature data, O2Content data, CO2It is bent that content data, air-fuel ratio, coefficient of excess record temperature in rotary hearth furnace
Line and various content curves；
According to temperature data, O2Content data, CO2Content data, air-fuel ratio, coefficient of excess are adjusted into rotary hearth furnace
Air and gas proportion, realize optimal combustion control；
Wherein, after any number exceeds predetermined threshold value, alarm signal is sent.
The advantage of the invention is that：
1st, a through hole is opened up by the side wall in rotary hearth furnace so that outside combined type probe can be stretched into by the through hole
Rotary hearth furnace is interior and detects each item data, and the calculating of multinomial critical data, and comprehensive all data are carried out according to the data of detection
Carry out being adjusted to rotary hearth furnace combustion controller for adaptability, so as to be optimized to the burning situation in rotary hearth furnace, improve combustion
Burn efficiency.
2nd, outside combined type is popped one's head in by electric sliding rail come into/out rotary hearth furnace, by being controlled by air source box
System, it is convenient and safe.
3rd, combined type is protected to pop one's head in by protection sleeve, while source of the gas power can be provided by air source box, on the one hand
It can be pointed to protect sleeve interior and stretched into the probe of the combined type in rotary hearth furnace to be purged, and then it is cooled,
On the other hand it can also ensure that it is cleaned；
4th, it is provided with and renovates, after combined type probe is exited, renovate and automatically fall off, the end for protecting sleeve is closed,
To avoid heat radiation in stove.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only some of the present invention
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
The letter of the system of the real-time detection of atmosphere constituent and combustion control in a kind of rotary hearth furnace that Fig. 1 provides for the present invention
Want schematic diagram；
The stream of the method for the real-time detection of atmosphere constituent and combustion control in a kind of rotary hearth furnace that Fig. 2 provides for the present invention
Cheng Tu；
Fig. 3 carries out the flow chart of Combustion System for PID controller in one embodiment.
Embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And, it is obvious to the skilled person that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Explain technical scheme.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, this
Invention can also have other embodiment.
There is provided atmosphere constituent real-time detecting system and combustion control side in a kind of rotary hearth furnace for the purpose of the present invention
Method, various atmosphere constituents (are particularly CO, CO in stove in the understanding rotary hearth furnace course of work in real time2、O2) distribution, while optimizing combustion
Controlling model is burnt, Deoxidation Atmosphere in Furnace can be effectively controlled, the reduction energy is consumed excessively, and not only energy-conservation also helps guidance surely
Fixed production.The present invention can the extensive use on the hot industry stove such as rotary hearth furnace, in real time detection reaction in furnace atmosphere in it is various
The content of composition, instructs hearth combustion control, to reduction stove energy consumption, improves product quality significant.
Embodiment one
In the present embodiment, the invention provides atmosphere constituent in a kind of rotary hearth furnace detection and combustion control in real time
System, the system is mainly included：
Combustion controller (such as PID controller), for controlling the burning situation in rotary hearth furnace；
Pneumatic driving and reversing mechanism 3, is fixed on the side wall of rotary hearth furnace 1, pneumatic driving and reversing mechanism 3 have rail plate, cylinder and
Propeller, propeller is promoted by cylinder and reciprocatingly slided on rail plate；
Combined type probe 4, on rail plate, combined type probe 4 can be moved back and forth on rail plate, and be led to
The through hole that the side wall of rotary hearth furnace 1 opens up is crossed to stretch into rotary hearth furnace 1 to monitor the data of atmosphere constituent in rotary hearth furnace 1；
Air source box 6, is connected with combined type probe 4 and pneumatic driving and reversing mechanism 3, multiple so as to promote for controlling the source of the gas of cylinder
Box-like probe 4 is moved on slide rail, and the bleed pressure of cylinder is detected；
Instrument main frame 5, is connected with air source box 6, combined type probe 4, for sending control instruction to air source box 6, combined type
Probe 4, to control combined type probe 4 to be moved on slide rail and collect the Monitoring Data of combined type probe 4；
PLC 7, is connected with instrument main frame 5, for carrying out burning mould according to the Monitoring Data of the receipt of instrument main frame 5
The control optimization of type, and send a command to combustion controller the burning condition in rotary hearth furnace 1 is optimized.
In an optional embodiment of the invention, combined type probe 4 includes O2Monitoring modular, CO monitoring modulars, CO2Monitoring
Module, temperature detecting module, can detect every key parameter in rotary hearth furnace by combined type probe 4, be subsequently to be fired
Burn optimization and foundation is provided.
It is different from prior art operation personnel to be only capable of controlling burning condition according to in-furnace temperature, the present invention is by turning bottom
The side wall of stove opens up a through hole so that outside combined type probe 4 can be stretched into rotary hearth furnace by the through hole and detect items
Data, including temperature data, CO content datas, O2Content data, CO2Content data, multinomial pass is carried out according to the data of detection
The calculating of key data, and comprehensive all data carry out being adjusted to rotary hearth furnace combustion controller for adaptability, so as to rotary hearth furnace
Interior burning situation is optimized, and improves efficiency of combustion.Further, outside combined type probe 4 is entered by electric sliding rail
Enter/rotary hearth furnace is exited, it is controlled by air source box, it is convenient and safe.Due to sensing CO content datas, O2Content data, CO2Contain
The sensor of amount data involves great expense, therefore after in-furnace temperature is too high, pneumatic driving and reversing mechanism can drive combined type probe certainly
It is dynamic to be exited out of stove, to protect combined type to pop one's head in.
, may be right if to sense temperature in rotary hearth furnace too high for combined type probe 4 in an optional embodiment of the invention
Combined type probe 4 causes damage, and instrument main frame 5 automatically controls air source box 6 to exit combined type probe 4 from rotary hearth furnace.
In an optional embodiment of the invention, protective case is additionally provided with the lead to the hole site that the side wall of rotary hearth furnace 1 is opened up
Cylinder 2, protection sleeve 2 is arranged on the travel path of combined type probe 4, for protecting combined type probe 4；Outer jointing jacket cylinder 2
One end is fixed on the support frame of pneumatic driving and reversing mechanism 3, and the other end is arranged in the through hole of rotary hearth furnace 1.Protect the front end of sleeve 2
Outside rotary hearth furnace, rear end is located in the furnace wall of rotary hearth furnace.
In an optional embodiment of the invention, protect sleeve 2 to be made of high-quality stainless steel and superalloy material
Double-decker cylinder, and protection sleeve 2 be connected with air source box 6；Air source box 6 is toward the protection purge gas of sleeve 2, with to protection
Combined type probe 4 in sleeve 2 carries out purging cooling and cleaned.Air source box 6 is act as：1st, provide to protection sleeve 2
The source of the gas for being cleaned and being cooled；2nd, the pneumatic source of the gas of cylinder needed for the propeller of pneumatic driving and reversing mechanism is filtered, regulated and controled,
Bleed pressure is detected, and when there is stopping the supple of gas or steam failure, sends alarm signal.
In an optional embodiment of the invention, it is provided with the front end of protection sleeve 2 and renovates 8.Work as compressed air pressure
When temperature less than setting value or the sensing of combined type probe 4 exceedes setting value, monitoring probe can be exited out of burner hearth automatically, with
Protection probe safety, after monitoring probe is exited, renovate to close automatically, to avoid heat radiation in stove.Optionally, 8 are renovated to lead to
The front end that hinge is fixed on protection sleeve 2 is crossed, before combined type probe 4 is stretched into rotary hearth furnace, will renovate on 8 and turn over so that be multiple
Box-like probe 4 can enter in protection sleeve 2；When combined type probe 4 is exited completely out of burner hearth, turn under gravity
Lid is down turned over automatically, the opening of protection sleeve 2 is closed, to avoid heat radiation in stove.
In an optional embodiment of the invention, it is referred to shown in Fig. 2, PLC 7 carries out the control of combustion model
The step of optimization, includes：
CO content datas to collection are handled, and be will be less than 0 and are rejected more than 70% data, because coal gas is used
Coal gas of converter, CO contents are less than 0 in 50-65%, therefore the CO component contents of collection, and the value more than 70% is regarded as falseness
Signal, the false data that automatic rejection interference signal (for example breaking) is brought；
To the O of collection2Content data is handled, and be will be less than 0 and is rejected more than 25% data, the O2 in coal gas of converter contains
Amount is below 2%, and the oxygen content maximum in air is 21%, therefore the O of collection2Component content is less than 0, the value more than 25%
It is regarded as spurious signal, the false data that automatic rejection interference signal (for example breaking) is brought；
To the CO of collection2Content data is handled, and be will be less than 0 and is rejected more than 30% data, the CO in coal gas of converter2
Oxygen content maximum of the content in 15-20%, air is 0.03%, therefore the CO of collection2Component content is less than 0, is more than
30% value is regarded as spurious signal, the false data that automatic rejection interference signal (for example breaking) is brought；
Processing data is carried out to the temperature data of collection, 0 is will be less than and the data more than 1400 DEG C is rejected, rotary hearth furnace design
Temperature 0-1400 degree, therefore the temperature of collection is less than 0 degree, the value more than 1400 degree is regarded as spurious signal, automatic rejection
The false data that interference signal is brought, such as data exception after thermocouple break；
Calculate the air-fuel ratio in rotary hearth furnace 1, air-fuel ratio=rotary hearth furnace air inlet amount：Into coal gas amount；
According to formula theoretical air requirement V0=1/21*CO content datas, amount of actual air for combustion V=aV0Calculate as industrial furnace
The coefficient of excess air a in exit, excess air coefficient is the important indicator of rotary hearth furnace operation, and a is too big then to increase flue gas volume,
Flue gas loss is caused, too small, it cannot be guaranteed that fuel burns completely, a refers to air excess (surplus) coefficient in industrial furnace exit,
It is preferred that, a numerical value is between 1.1-1.2；
According to temperature data, O2Content data, CO2It is bent that content data, air-fuel ratio, coefficient of excess record temperature in rotary hearth furnace
Line and various content curves, and send a control signal to combustion controller, by PID regulator automatically control each section of coal gas and
The aperture and flow of air adjustment valve, realize optimal combustion control, and the energy is not wasted, high efficiency, are rapidly achieved setting mesh
Mark, realizes optimal combustion control；
In addition, after any number exceeds predetermined threshold value, instrument main frame sends alarm signal, reminds operating personnel.
Fig. 3 shows the flow chart of PID regulator control.
Embodiment two
In the present embodiment, the invention provides atmosphere constituent in a kind of rotary hearth furnace detection and combustion control in real time
Method, as shown in Fig. 2 comprising the following steps：
Gather temperature data, CO content datas, the O of burning situation in rotary hearth furnace2Content data, CO2Content data；
CO content datas to collection are handled, and be will be less than 0 and are rejected more than 70% data；
To the O of collection2Content data is handled, and be will be less than 0 and is rejected more than 25% data；
To the CO of collection2Content data is handled, and be will be less than 0 and is rejected more than 30% data；
Processing data is carried out to the temperature data of collection, 0 is will be less than and the data more than 1400 DEG C is rejected；
Calculate the air-fuel ratio in rotary hearth furnace, air-fuel ratio=rotary hearth furnace air inlet amount：Into coal gas amount；
According to formula theoretical air requirement V0=1/21*CO content datas, amount of actual air for combustion V=aV0Calculate as industrial furnace
The coefficient of excess air a in exit；
According to temperature data, O2Content data, CO2It is bent that content data, air-fuel ratio, coefficient of excess record temperature in rotary hearth furnace
Line and various content curves；
According to temperature data, O2Content data, CO2Content data, air-fuel ratio, coefficient of excess are adjusted into rotary hearth furnace
Air and gas proportion, realize optimal combustion control；
After any number exceeds predetermined threshold value, alarm signal is sent.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply；Any those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and techniques content make many possible variations and modification to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this has no effect on the substantive content of the present invention.Therefore, every content without departing from technical solution of the present invention, foundation
The technical spirit of the present invention still falls within the present invention to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of technical scheme protection.
Claims (7)
1. the system of the real-time detection of atmosphere constituent and combustion control in a kind of rotary hearth furnace, it is characterised in that including：
Combustion controller,
Pneumatic driving and reversing mechanism, is fixed on the side wall of the rotary hearth furnace, the pneumatic driving and reversing mechanism have rail plate, cylinder and
Propeller, the propeller is promoted by the cylinder and reciprocatingly slided on the rail plate；
Combined type is popped one's head in, on the rail plate, and the combined type probe can back and forth be moved on the rail plate
Move, and the through hole opened up by rotary hearth furnace side wall stretches into rotary hearth furnace to monitor the data of atmosphere constituent in rotary hearth furnace；
Air source box, is connected with combined type probe and pneumatic driving and reversing mechanism, for controlling the source of the gas of cylinder to promote combined type to visit
Head is moved on slide rail；
Instrument main frame, is connected with air source box, combined type probe, is popped one's head in for sending control instruction to air source box, combined type, to control
Combined type probe processed moves on slide rail and collects the Monitoring Data of combined type probe；
PLC, is connected with instrument main frame, the control for carrying out combustion model according to the Monitoring Data of instrument main frame receipt
Optimize, and send a command to combustion controller and the burning condition in rotary hearth furnace is optimized.
2. the system of the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace as claimed in claim 1, its feature exists
In the combined type probe includes O2Monitoring modular, CO monitoring modulars, CO2Monitoring modular, temperature detecting module.
3. the system of the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace as claimed in claim 1, its feature exists
In being additionally provided with protection sleeve at the lead to the hole site that rotary hearth furnace side wall is opened up, the protection sleeve is arranged on described multiple
On the travel path of box-like probe, for protecting combined type to pop one's head in；
One end of the outer jointing jacket cylinder is fixed on the support frame of pneumatic driving and reversing mechanism, and the other end is arranged on the through hole of rotary hearth furnace
In.
4. the system of the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace as claimed in claim 3, its feature exists
In, the protection sleeve be the cylinder for the double-decker being made of stainless steel and superalloy material, and the protection sleeve with
The air source box is connected；
The air source box is toward the combined type probe purge gas in the protection sleeve, so that combined type probe is cooled and protected
Hold cleaning.
5. the system of the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace as claimed in claim 3, its feature exists
In being provided with and renovate in the front end of the protection sleeve.
6. the system of the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace as claimed in claim 2, its feature exists
In the step of control that PLC carries out combustion model optimizes includes：
CO content datas to collection are handled, and be will be less than 0 and are rejected more than 70% data；
To the O of collection2Content data is handled, and be will be less than 0 and is rejected more than 25% data；
To the CO of collection2Content data is handled, and be will be less than 0 and is rejected more than 30% data；
Processing data is carried out to the temperature data of collection, 0 is will be less than and the data more than 1400 DEG C is rejected；
Calculate the air-fuel ratio in rotary hearth furnace, the air-fuel ratio=rotary hearth furnace air inlet amount：Into coal gas amount；
According to formula theoretical air requirement V0=1/21*CO content datas, amount of actual air for combustion V=aV0Calculate and exported for industrial furnace
The coefficient of excess air a at place；
According to temperature data, O2Content data, CO2Content data, air-fuel ratio, coefficient of excess record rotary hearth furnace in temperature curve and
Various content curves, and combustion controller is sent a control signal to, it is real with the air and gas proportion being adjusted into rotary hearth furnace
Existing optimal combustion control；
After any number exceeds predetermined threshold value, alarm signal is sent.
7. a kind of method of the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace, it is characterised in that including following step
Suddenly：
Gather temperature data, CO content datas, the O of rotary hearth furnace2Content data, CO2Content data；
CO content datas to collection are handled, and be will be less than 0 and are rejected more than 70% data；
To the O of collection2Content data is handled, and be will be less than 0 and is rejected more than 25% data；
To the CO of collection2Content data is handled, and be will be less than 0 and is rejected more than 30% data；
Processing data is carried out to the temperature data of collection, 0 is will be less than and the data more than 1400 DEG C is rejected；
Calculate the air-fuel ratio in rotary hearth furnace, the air-fuel ratio=rotary hearth furnace air inlet amount：Into coal gas amount；
According to formula theoretical air requirement V0=1/21*CO content datas, amount of actual air for combustion V=aV0Calculate and exported for industrial furnace
The coefficient of excess air a at place；
According to temperature data, O2Content data, CO2Content data, air-fuel ratio, coefficient of excess record rotary hearth furnace in temperature curve and
Various content curves；
According to temperature data, O2Content data, CO2Content data, air-fuel ratio, coefficient of excess are adjusted into the air in rotary hearth furnace
And gas proportion, realize optimal combustion control；
Wherein, after any number exceeds predetermined threshold value, alarm signal is sent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710640013.9A CN107314671A (en) | 2017-07-31 | 2017-07-31 | The system and method for the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace |
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| CN201710640013.9A CN107314671A (en) | 2017-07-31 | 2017-07-31 | The system and method for the real-time detection of atmosphere constituent and combustion control in rotary hearth furnace |
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Cited By (3)
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| CN108489539A (en) * | 2018-03-15 | 2018-09-04 | 芜湖超源力工业设计有限公司 | A kind of Industrial Stoves safety detection device |
| CN111223529A (en) * | 2018-11-26 | 2020-06-02 | 斗山重工业建设有限公司 | Combustion optimization device and method thereof |
| CN115406260A (en) * | 2022-08-02 | 2022-11-29 | 重庆赛迪热工环保工程技术有限公司 | Method and system applied to intelligent control of combustion of rotary hearth furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108489539A (en) * | 2018-03-15 | 2018-09-04 | 芜湖超源力工业设计有限公司 | A kind of Industrial Stoves safety detection device |
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