CN104880093B - Method for intelligently controlling temperatures of furnaces and kilns - Google Patents
Method for intelligently controlling temperatures of furnaces and kilns Download PDFInfo
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- CN104880093B CN104880093B CN201510169298.3A CN201510169298A CN104880093B CN 104880093 B CN104880093 B CN 104880093B CN 201510169298 A CN201510169298 A CN 201510169298A CN 104880093 B CN104880093 B CN 104880093B
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Abstract
The invention discloses a method for intelligently controlling the temperatures of furnaces and kilns. The method includes acquiring kiln head output values by means of speed change (fuzzy) PID (proportion, integration and differentiation) operation according to feedback temperatures of kiln heads of the rotary kilns; outputting the kiln head output values to coal scales of the kiln heads and controlling coal injection rates of coal of the kiln heads to be within certain ranges; acquiring set values of speed change (fuzzy) PID temperatures, namely, actual set temperatures of the decomposing furnaces, by means of operation by the aid of temperature control subsystems of the decomposing furnaces; computing errors and error change rates by the aid of feedback temperatures of outlets of the decomposing furnaces and the actual set temperatures of the decomposing furnaces, acquiring speed change PID (fuzzy) values by the aid of the computed errors and the computed error change rates, and acquiring output values of the decomposing furnaces by means of speed change (fuzzy) PID operation according to the feedback temperatures of the outlets of the decomposing furnaces; outputting the output values of the decomposing furnaces to coal scales of the decomposing furnaces and controlling coal injection rates of the decomposing furnaces to be within certain ranges.
Description
Technical field
A kind of the present invention relates to cement furnace control technology field, more particularly to kiln temperature intelligent control method.
Background technology
Cement furnace, the control operation mode of various smelting rotary kiln electric control systems are all generally manually to see both at home and abroad
The stability of fire, manual control mode, its control accuracy and operation is all excessively poor, therefore I combines and am engaged in electrical control for many years
Experience, and the understanding and its summary to each stove technique, and each big stove experiment experience at home, special invention one kind are now directed to
A kind of intelligent control method also not having both at home and abroad and flow process, its control process are controlled for full automatic artificial intelligent.Due to each stove
Kiln major part fuel is all that come as fuel, and the response speed of coal combustion is slow using coal, and the control ratio of its temperature is more delayed.
The content of the invention
It is an object of the invention to provide a kind of kiln temperature intelligent control method, effectively solving above-mentioned technical problem.
For effectively solving above-mentioned technical problem, the technical scheme that the present invention takes is as follows：
Kiln temperature intelligent control method, its method are comprised the following steps：
(1) kiln temperature control subsystem and dore furnace control subsystem are set；
(2) kiln temperature control：Pid algorithm temperature is arranged by the kiln temperature control subsystem and sets mould
Block, obtains kiln tail PID design temperature by data operation, with kiln end temperature as feedback, and obtains kiln tail output based on pid algorithm
Value；
The kiln tail output valve is exported and setting value is controlled to temperature of kiln head, set with temperature of kiln head by temperature of kiln head feedback
Definite value, calculates error and error rate, obtains the pid value of shift PID, is fed back according to temperature of kiln head, is transported by shift PID
Calculate and obtain kiln hood output valve；
Send the kiln hood output valve to kiln hood coal scale to control within the specific limits injecting coal quantity；
(3) calciner temperature control：Shift PID temperature is obtained by the calciner temperature control subsystem sequential operation
Setting value, both dore furnace actual set temperature；
By decomposition furnace outlet Temperature Feedback value, decomposition furnace outlet desired temperature, calculation error and error rate, obtain
The pid value of shift PID is obtained, output valve is calculated according to decomposition furnace outlet Temperature Feedback application shift PID；
Send the output valve to dore furnace coal scale to control within the specific limits injecting coal quantity.
Particularly, step (1) is further comprising the steps of：
The kiln temperature control subsystem and dore furnace control subsystem are based on same control platform, transport including PID
Module, signal feedback module and data transmission module is calculated, and realizes that variable is adjusted, examined by data statisticss interface and display window
Survey and monitor in real time.
Particularly, step (2) comprise the following steps：
(2-1) with double PID controls, PID1 using rotary kiln temperature variable as feedback signal, its computing output valve
Export to the desired temperature of PID2, its design temperature is controlled within limits, and PID2 is with rotary kiln end temperature variable
Used as feedback signal, PID2 uses the injecting coal quantity of its kiln hood scale of shift PID algorithm controls so as to temperature of kiln head, both secondary air temperature
Control is within limits；
(2-2) first with kiln end temperature sensor as feedback, according to kiln end temperature setting value, with the algorithm of PID, computing
Go out the span of control of temperature of kiln head, i.e. output valve to export to the desired temperature of shift PID, if its kiln end temperature is low, which is defeated
Go out just increase, i.e. the design temperature of kiln hood is also increased by, if its kiln end temperature is high, its output reduces.
(2-3) the temperature of kiln head set point of rotary kiln：Such as rotary kiln end temperature standard is controlled at 1100 DEG C or so,
Temperature is set in 1080-1140 DEG C, and it is 1080 DEG C that the output valve of kiln tail PID corresponds to kiln hood design temperature in minimum, kiln tail PID
Output valve in maximum correspondence design temperature be 1140 DEG C, its correspondence be output as linear output relationship.
Beneficial effects of the present invention are：
1st, the kiln temperature intelligent control method that the present invention is provided, is capable of achieving to automatically control the temperature of cement furnace dore furnace
Degree, temperature control precision are high, and its temperature fluctuation range is less than artificial, after temperature control precision is improved, can suitably reduce which
Temperature, can make temperature control within the scope of 850 ± 3 DEG C, so reduce temperature, its coal consumption also relative reduction reaches section
The purpose that can be reduced discharging.
2nd, it is capable of achieving to automatically control kiln temperature, its temperature control precision is high, temperature fluctuation range is less than manually controlling,
After temperature control precision is improved, its kiln temperature can be suitably reduced, its rotary kiln end maximum temperature fluctuation 1120 can be made
Within the scope of DEG C ± 25 DEG C (effect of most energy-conservation), kiln end temperature is controlled within the scope of 1030 DEG C ± 3 DEG C, and suitable control its
Negative pressure in kiln, so that it may determine the actual temperature of its burning zone, the value of precise control free calcium；Its kiln temperature fluctuation range becomes
Little, its fuel also must lack by use, also reach the purpose of energy-saving and emission-reduction.
3rd, rotary kiln, calciner temperature fluctuation range are little, and in its kiln, refractory material service life increases, the maintenance week of its kiln
Phase is elongated, and which burns till a section temperature stabilization, improves clinker strength, and its cement quality is improved, in cement furnace rotary kiln burning solid
During waste rubbish, possible rotary kiln end temperature fluctuation range can become big, and its maximum fluctuation is within the scope of 1050-1150 DEG C.
The present invention is described in detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is kiln temperature control flow chart in kiln temperature intelligent control method of the present invention；
Fig. 2 is calciner temperature control flow chart in kiln temperature intelligent control method of the present invention；
Fig. 3 is kiln temperature control fuzzy control search table in kiln temperature intelligent control method of the present invention；
Fig. 4 is calciner temperature control fuzzy control search table in kiln temperature intelligent control method of the present invention.
Specific embodiment
Embodiment 1：
In the present embodiment, the composition original paper of the conventional known structure does not do explanatory note and display in figure.
As Figure 1-4, kiln temperature intelligent control method disclosed in the present embodiment, kiln temperature intelligent control method,
Its method is comprised the following steps：
(1) kiln temperature control subsystem and dore furnace control subsystem are set；The kiln temperature controls subsystem
System and dore furnace control subsystem are based on same control platform, including PID arithmetic module and signal feedback module, and pass through data
Statistics interface and display window realize that variable is adjusted, detected and monitor in real time.
(2) kiln temperature control：Pid algorithm temperature is arranged by the kiln temperature control subsystem and sets mould
Block, obtains kiln tail PID design temperature by data operation, with kiln end temperature as feedback, and obtains kiln tail output based on pid algorithm
Value；
The kiln tail output valve is passed to into temperature of kiln head control setting value, is set by temperature of kiln head feedback and temperature of kiln head
Value, calculates error and error rate, obtains the pid value of shift PID, is fed back according to temperature of kiln head, by shift PID computing
Obtain kiln hood output valve；
The kiln hood output valve is passed to kiln hood coal scale to control within the specific limits injecting coal quantity；
(2-1) with double PID controls, PID1 using rotary kiln temperature variable as feedback signal, its computing output valve
The desired temperature of PID2 is passed to, its design temperature is controlled within limits, PID2 is made with rotary kiln end temperature variable
For feedback signal, injecting coal quantities of the PID2 with its kiln hood scale of shift PID algorithm controls so as to temperature of kiln head, both secondary wind temperature control
System is within limits；
(2-2) first with kiln end temperature sensor as feedback, according to kiln end temperature setting value, with the algorithm of PID, computing
Go out the desired temperature that the span of control of temperature of kiln head, i.e. output valve pass to shift PID, if its kiln end temperature is low, its output
Just increase, i.e. the design temperature of kiln hood is also increased by, if its kiln end temperature is high, its output reduces.
(2-3) the temperature of kiln head set point of rotary kiln：Such as rotary kiln end temperature standard is controlled at 1100 DEG C or so,
Temperature is set in 1080-1140 DEG C, and it is 1080 DEG C that the output valve of kiln tail PID corresponds to kiln hood design temperature in minimum, kiln tail PID
Output valve in maximum correspondence design temperature be 1140 DEG C, its correspondence be output as linear output relationship.
(3) calciner temperature control：Shift PID temperature is obtained by the calciner temperature control subsystem sequential operation
Setting value, both dore furnace actual set temperature；
By decomposition furnace outlet Temperature Feedback value, decomposition furnace outlet desired temperature, calculation error and error rate, obtain
The pid value of shift PID is obtained, output valve is calculated according to decomposition furnace outlet Temperature Feedback application shift PID；
The output valve is passed to dore furnace coal scale to control within the specific limits injecting coal quantity.
Applicant state, person of ordinary skill in the field on the basis of above-described embodiment, by above-described embodiment
Step, it is combined with the technical scheme of Summary, so as to produce new method, and the record scope of the present invention it
One, the application no longer enumerates the other embodiment of these steps for making description simple and clear.
In the present embodiment, main operational principle is as described below：
1st, calciner temperature is automatically controlled：
With decomposition furnace outlet temperature or head temperature as feedback signal, with its dore furnace coal of shift PID algorithm controls
The injecting coal quantity of scale so as to which temperature control is within limits.
Parameter：
Calciner temperature error P just (just represented with P) here=such as design temperature is at 850 DEG C, then this temperature value
Just within the scope of 840-860 DEG C, (± 10 DEG C) this parameter can be adjusted according to practical situation.
Calciner temperature error is little+(here with P it is little+represent)=such as design temperature is at 850 DEG C, then this temperature value
Just within the scope of 860-870 DEG C (temperature be higher than 10 DEG C of design temperature and be less than within 20 DEG C) this parameter can be according to practical situation
Adjustment.
In calciner temperature error+(here with P+represent)=such as design temperature is at 850 DEG C, then this temperature value
Just within the scope of 870-880 DEG C (temperature be higher than 20 DEG C of design temperature and be less than within 30 DEG C) this parameter can be according to practical situation
Adjustment.
Calciner temperature error is big+(here with P it is big+represent)=such as design temperature is at 850 DEG C, then this temperature value
Just more than 880 DEG C, (temperature higher than design temperature more than 30 DEG C) this parameter can be adjusted according to practical situation.
Calciner temperature error is little-(here with P it is little-represent)=such as design temperature is at 850 DEG C, then this temperature value
Just within the scope of 835-840 DEG C, (temperature is less than within 10 DEG C to 15 DEG C of design temperature) this parameter can be adjusted according to practical situation
It is whole.
In calciner temperature error-(here with P-represent)=such as design temperature is at 850 DEG C, then this temperature value
Just within the scope of 830-835 DEG C (temperature is less than within the scope of 15 DEG C to 20 DEG C of design temperature) this parameter can be according to practical situation
Adjustment.
Calciner temperature error is big-(here with P it is big-represent)=such as design temperature is at 850 DEG C, then this temperature value
Just below 830 DEG C, (temperature is less than below 20 DEG C of design temperature) this parameter can be adjusted according to practical situation.
(PV) feedback temperature：Decomposition furnace outlet (temperature sensor) temperature or top (temperature sensor) temperature.
(SSV) design temperature:Design temperature at the top of decomposition furnace outlet design temperature or dore furnace.
(SV) pid algorithm design temperature:(the actual set temperature of PID, its value is according to feedback for decomposition furnace outlet design temperature
The error change of temperature and change) or dore furnace at the top of design temperature (the actual set temperature of PID, its value according to feedback temperature
The error change of degree and change).
The actual value of PID：P values, I values, D values (its value can be set according to practical adjustments)
(OUT) computing output valve：Dore furnace coal scale injecting coal quantity.
The wherein control process of temperature：
When (PV) feedback temperature (calciner temperature)=P just, then (SV) pid algorithm design temperature=(SSV) setting temperature
Degree.
When (PV) feedback temperature (calciner temperature)=P it is little+, then (SV) pid algorithm design temperature=(SSV) setting temperature
- 10 DEG C (this temperature can set according to actual needs and can set greatly little) of degree.
When in (PV) feedback temperature (calciner temperature)=P+, then (SV) pid algorithm design temperature=(SSV) setting temperature
- 20 DEG C (this temperature can set according to actual needs and can set greatly little) of degree.
When (PV) feedback temperature (calciner temperature)=P it is big+, then (SV) pid algorithm design temperature=(SSV) setting temperature
- 30 DEG C (this temperature can set according to actual needs and can set greatly little) of degree.
When (PV) feedback temperature (calciner temperature)=P it is little-, then (SV) pid algorithm design temperature=(SSV) setting temperature
+ 10 DEG C (this temperature can set according to actual needs and can set greatly little) of degree.
When in (PV) feedback temperature (calciner temperature)=P-, then (SV) pid algorithm design temperature=(SSV) setting temperature
+ 20 DEG C (this temperature can set according to actual needs and can set greatly little) of degree.
When (PV) feedback temperature (calciner temperature)=P it is big-, then (SV) pid algorithm design temperature=(SS design temperatures
+ 30 DEG C (this temperature can set according to actual needs and can set greatly little).
Temperature controlling range can also be increased or be reduced according to the fluctuation range of its temperature.
Shift PID (fuzzy) control method：
When error and the big error rate change of temperature：Value P value (gain) increase of its PID, the I times of integration reduce
(integral action increasing), D derivative times reduce (differential action reduction).
As shown in Figure 4：When the error and error rate change hour of temperature：The value P value (gain) of its PID reduces, I integrations
Time increases (integral action reduction), and D derivative times increase (differential action increasing).
In its fuzzy control search table：
E=temperature errors, EC=temperature error rates of change, KP=PID gains,
The Ki=PID times of integration, KD=PID derivative times.
Pid value can need adjustment, such as its value that will also refine its EC, E, KP, Ki, Kd increase table according to practical adjustments
Size, such as EC rise to 4 or 5, E be also added to 4 or 5, its output KP, Ki, Kd also relative increase.
The actual value of PID：
P values=setting value * KP, I values=setting value * Ki, D values=setting value * Kd；
The control of dore furnace coal scale injecting coal quantity：
PID output valves (controlled quentity controlled variable) are controlled into the injecting coal quantity of dore furnace coal scale, its span of control is according to actual production, coal heat
Depending on matter and raw material analysis need.Such as raw material yield controls to change in the range of dore furnace coal (8-12T/H) in 220T/H,
In 240T/H, control dore furnace rotor weigher changes in the range of (9-13T/H) such as raw material yield.
2nd, kiln temperature Automatic Control Theory explanation
(1) with double PID controls, using rotary kiln temperature variable as feedback signal, its computing output valve is defeated for PID1
Go out to the desired temperature of PID2, its design temperature is controlled within limits, PID2 is made with rotary kiln end temperature variable
For feedback signal, injecting coal quantities of the PID2 with its kiln hood scale of shift PID algorithm controls so as to temperature of kiln head, both secondary wind temperature control
System is within limits.
(2) following important explanation is drawn according to above control method：As the control of kiln temperature is a large time delay
Control, which burns till stage casing prior art and cannot temporarily carry out thermometric, I with major technique be first to use kiln end temperature sensor
As feedback, according to kiln end temperature setting value, with the algorithm of PID, the span of control of temperature of kiln head is calculated, that is, which is defeated
Go out the desired temperature that value sends shift PID to, if its kiln end temperature is low, its output is with regard to increase i.e. the setting temperature of kiln hood
Degree is also increased by, if its kiln end temperature is high, its output reduces namely its kiln hood design temperature and is also reduced by.
(3) the temperature of kiln head set point of its rotary kiln is set as desired, such as rotary kiln end temperature (secondary wind
Temperature) control is generally required in 1100 DEG C or so the values for most value energy-conservation, my temperature is set in 1080 DEG C of lower limit, 1140 DEG C of the upper limit,
Namely the output valve of its kiln tail PID correspondence kiln hood design temperature in minimum is 1080 DEG C, and the output valve of kiln tail PID is in maximum
When correspondence design temperature be 1140 DEG C, its correspondence be output as linear output relationship.Explanation：Its temperature of kiln head set point according to return
Depending on the practical situation of the kiln condition of rotary kiln and calcined by rotary kiln.
Parameter：
Little (being represented with P- the is little here)=rotary kiln end feedback temperature of rotary kiln end temperature (secondary air temperature) error is little
Depending on rotary kiln end temperature setting minima (such as less than 10 DEG C) practical situation of this temperature according to rotary kiln.
(represented with P- here) in rotary kiln end temperature error=rotary kiln end feedback temperature be less than rotary kiln
Depending on head temperature sets minima (such as less than 20 DEG C) this temperature according to the practical situation of rotary kiln.
Rotary kiln end temperature (secondary air temperature) error (being represented with P- is big here)=rotary kiln end feedback temperature is less than
Depending on rotary kiln end temperature sets minima (such as less than 30 DEG C) this temperature according to the practical situation of rotary kiln.
Rotary kiln end temperature (secondary air temperature) error (being represented with P- significantly here)=rotary kiln end feedback temperature is little
Depending on rotary kiln end temperature setting minima (such as less than less than 40 DEG C) practical situation of this temperature according to rotary kiln.
Increase or reduce the value that its temperature sets P- above according to actual temperature.
Above rotary kiln end temperature error P- can be set according to practical situation.
(PV1) PID1 feedback temperatures：Rotary kiln (temperature sensor) temperature.
(PV2) PID2 feedback temperatures：Rotary kiln end secondary air temperature (temperature sensor) temperature.
(SV1) PID1 rotary kilns design temperature:Rotary kiln design temperature.
(SSV1) PID1 algorithms design temperature:PID1 algorithm kiln tail actual temperature setting values are (with actual set rotary kiln
The feedback temperature of the feedback temperature of head and rotary kiln changes and changes).
(OUT1) output valve of PID1：PID2 rotary kiln end desired temperatures.
(OUT2) output valve of PID2：The injecting coal quantity of kiln hood scale.
P is little=and 10 DEG C, in P=20 DEG C, P is big=and 30 DEG C, significantly=40 DEG C of P；
P is little, in P, P is big, P is worth significantly can need adjustment according to actual control.
The control process of rotary kiln temperature：
Following control condition is not met, then (SSV1) PID1 algorithm design temperatures=(SV1) PID1 rotary kilns set
Constant temperature degree.Meet following control condition, (SSV1) the following noodles part control of the temperature of PID1 algorithms setting.
When the feedback temperature (rotary kiln temperature) of PID1>PID1 rotary kiln design temperatures, and rotary kiln
Temperature error=P- is little for head, then (SSV1) PID1 algorithms design temperature=(SV1) PID1 rotary kiln design temperature+P are little,
Such as+10 DEG C.
When the feedback temperature (rotary kiln temperature) of PID1>PID1 rotary kiln design temperatures, and rotary kiln
Head temperature error
In=P-, then (SSV1) in PID1 algorithms design temperature=(SV1) PID1 rotary kiln design temperature+P, than
Such as+20 DEG C.
When the feedback temperature (rotary kiln temperature) of PID1>Rotary kiln design temperature, and rotary kiln end temperature
Error=P- is big for degree, then (SSV1) PID1 algorithms design temperature=(SV1) PID1 rotary kiln design temperatures+P is big, such as
+30℃。
When the feedback temperature (rotary kiln temperature) of PID1>Rotary kiln design temperature, and rotary kiln end temperature
Spend error=P- significantly so (SSV1) PID1 algorithm design temperatures=(SV1) PID1 rotary kiln design temperatures+P significantly,
Such as+40 DEG C.
Can adjusting according to actual needs for temperatures above increases its temperature for adding, and appropriate increasing according to actual needs
The number of times of Jia Qijia.
The control process of rotary kiln end temperature (secondary air temperature)：
Using rotary kiln end temperature (secondary air temperature) as feedback, rotary kiln PID1 (OUT1) computing output valve conduct
Kiln hood (secondary air temperature) desired temperature, with shift PID computing, controls its kiln hood scale injecting coal quantity so as to which temperature of kiln head is (secondary
Pathogenic wind-warm) control is within limits.
Shift PID (fuzzy) control method
When error and the big error rate change of temperature：Value P value (gain) increase of its PID, the I times of integration reduce
(integral action increasing), D derivative times reduce (differential action reduction).
When the error and error rate change hour of temperature：The value P value (gain) of its PID reduces, and the I times of integration increase
(integral action reduction), D derivative times increase (differential action increasing).
As shown in Figure 3：
Fuzzy control search table
E=temperature errors, EC=temperature error rates of change, KP=PID gains, the Ki=PID times of integration, KD=PID is micro-
Between timesharing；
Pid value can need adjustment, such as its value that will also refine its EC, E, KP, Ki, Kd increase table according to practical adjustments
Size, such as EC rise to 4 or 5, E be also added to 4 or 5, its output KP, Ki, Kd also relative increase.
The actual value of PID：
P values=setting value * KP, I values=setting value * Ki, D values=setting value * Kd；
The control of kiln hood coal scale injecting coal quantity：
By PID2 output valves (controlled quentity controlled variable) control rotary kiln end scale injecting coal quantity, its span of control according to actual production,
Depending on coal caloic and raw material analysis need., in 220T/H, control rotary kiln end scale is in (6-7T/H) model for such as raw material yield
Interior change is enclosed, in 240T/H, control rotary kiln end scale changes in the range of (6-7.5T/H) such as raw material yield.
The technology path for being different from prior art in the present embodiment is：
1st, the kiln temperature intelligent control method that the present invention is provided, is capable of achieving to automatically control the temperature of cement furnace dore furnace
Degree, temperature control precision are high, and its temperature fluctuation range is less than artificial, after temperature control precision is improved, can suitably reduce which
Temperature, can make temperature control within the scope of 850 ± 3 DEG C, so reducing temperature controlling range, its coal consumption is also relative to drop
It is low, reach the purpose of energy-saving and emission-reduction.
2nd, it is capable of achieving to automatically control kiln temperature, its temperature control precision is high, temperature fluctuation range is less than manually controlling,
After temperature control precision is improved, its kiln temperature can be suitably reduced, its rotary kiln end maximum temperature fluctuation 1120 can be made
Within the scope of DEG C ± 25 DEG C (effect of most energy-conservation), kiln end temperature is controlled within the scope of 1030 DEG C ± 3 DEG C, and suitable control its
Negative pressure in kiln, so that it may obtain the actual temperature of its burning zone, the value of precise control free calcium；Its kiln temperature fluctuation range becomes
Little, its fuel also must lack by use, also reach the purpose of energy-saving and emission-reduction.
3rd, rotary kiln, calciner temperature fluctuation range are little, and in its kiln, refractory material service life increases, the maintenance of its kiln
Cycle is elongated, and which burns till a section temperature stabilization, improves clinker strength, and its cement quality is improved, solid in the burning of cement furnace rotary kiln
During body waste rubbish, possible rotary kiln end temperature fluctuation range can become big, its maximum fluctuation 1050-1150 DEG C of scope it
It is interior.
The another statement of applicant, the present invention illustrate the implementation method of the present invention and apparatus structure by above-described embodiment,
But above-mentioned embodiment is the invention is not limited in, that is, does not mean that the present invention has to rely on said method and structure could be real
Apply.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention, to implementation method selected by the present invention etc.
Effect replacement and the addition of step, the selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and disclosure.
The present invention is not limited to above-mentioned embodiment, all to adopt with analog structure of the present invention and its method to realize the present invention
All embodiments of purpose are within the scope of the present invention.
Claims (3)
1. kiln temperature intelligent control method, it is characterised in that its method is comprised the following steps：
(1) kiln temperature control subsystem and calciner temperature control subsystem are set；
(2) kiln temperature control：By the kiln temperature control subsystem, kiln tail PID is obtained by data operation and is set
Constant temperature degree, with kiln end temperature as feedback, and obtains output valve based on pid algorithm；
The output valve is exported and gives temperature of kiln head setting value, by kiln hood feedback temperature and kiln hood design temperature, calculate mistake
Difference and error rate, obtain the pid value of shift PID by the error for calculating and error rate, anti-according to temperature of kiln head
Feedback, obtains kiln hood output valve by shift PID computing；
The kiln hood output valve is exported and injecting coal quantity is controlled within the specific limits to kiln hood coal scale；
(3) calciner temperature control：The setting of fuzzy temperature is obtained by the calciner temperature control subsystem sequential operation
It is worth, both dore furnace actual set temperature；
By decomposition furnace outlet feedback temperature and dore furnace actual set temperature, error and error rate is calculated, is become
The pid value of fast PID, according to decomposition furnace outlet feedback temperature application shift PID computing, calculates output valve；
The output valve is exported and injecting coal quantity is controlled within the specific limits to dore furnace coal scale.
2. kiln temperature intelligent control method according to claim 1, it is characterised in that step (1) also include with
Lower step：
The kiln temperature control subsystem and dore furnace control subsystem are based on same control platform, including PID arithmetic mould
Block, signal feedback module and data transmission module, and by data statisticss interface and display window realize variable adjust, detection and
Monitor in real time.
3. kiln temperature intelligent control method according to claim 1, it is characterised in that described step (2) include following
Step：
(2-1) with double PID controls, using rotary kiln temperature variable as feedback signal, its computing output valve is exported PID1
To the desired temperature of PID2, its design temperature is controlled within limits, PID2 using rotary kiln end temperature variable as
Feedback signal, PID2 is with the injecting coal quantity of shift PID algorithm controls its kiln hood scales in certain limit so as to temperature of kiln head, and both two
Secondary pathogenic wind-warm is controlled within limits；
(2-2) first with kiln end temperature sensor as feedback, according to kiln end temperature setting value, with the algorithm of PID, computing kiln discharge
The span of control of head temperature, i.e. output valve is exported to the desired temperature of shift PID, if its kiln end temperature is low, its output is just
Increase, the i.e. design temperature of kiln hood are also increased by, if its kiln end temperature is high, its output reduces, i.e. its kiln hood design temperature
It is reduced by；
(2-3) the temperature of kiln head set point of rotary kiln：Such as rotary kiln end temperature standard control at 1100 DEG C or so, temperature
Be set in 1080-1140 DEG C, the output valve of the kiln tail PID correspondence kiln hood design temperature in minimum is 1080 DEG C, kiln tail PID it is defeated
It is 1140 DEG C to go out value correspondence design temperature in maximum, and its correspondence is output as linear output relationship.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169298.3A CN104880093B (en) | 2015-04-10 | 2015-04-10 | Method for intelligently controlling temperatures of furnaces and kilns |
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| CN201510169298.3A CN104880093B (en) | 2015-04-10 | 2015-04-10 | Method for intelligently controlling temperatures of furnaces and kilns |
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| Publication Number | Publication Date |
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| CN104880093A CN104880093A (en) | 2015-09-02 |
| CN104880093B true CN104880093B (en) | 2017-03-22 |
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| CN105953597A (en) * | 2016-05-05 | 2016-09-21 | 胡柳新 | Kiln tail temperature transformation method |
| CN108571734B (en) * | 2018-04-12 | 2020-10-30 | 阮红艺 | Control device for garbage combustion temperature |
| CN109780878A (en) * | 2019-02-21 | 2019-05-21 | 四川中天炬矿业有限公司 | Automatically control the rotary kiln of heating temperature |
| CN109813132A (en) * | 2019-02-21 | 2019-05-28 | 四川中天炬矿业有限公司 | A kind of electric heater unit for revolving burner |
| CN111240190A (en) * | 2020-04-14 | 2020-06-05 | 福建三钢闽光股份有限公司 | PID controller based on variable fuzzy interval time sequence |
| CN111580384B (en) * | 2020-06-08 | 2023-03-31 | 济南大学 | Automatic adjusting method for parameters of PID control system for decomposing furnace temperature in cement production |
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| JPH06281364A (en) * | 1993-03-30 | 1994-10-07 | Ngk Insulators Ltd | Temperature control method for heating furnace |
| US5456761A (en) * | 1993-07-15 | 1995-10-10 | Alcan International Limited | High temperature and abrasion resistant temperature measuring device |
| MXPA04005896A (en) * | 2001-12-21 | 2004-09-13 | Enviroscrub Technologies Corp | Pretreatment and regeneration of oxides of manganese. |
| CN202630710U (en) * | 2012-03-28 | 2012-12-26 | 曲大伟 | Plasma baking furnace and ignition temperature automatic control system for rotary kiln |
| CN202694173U (en) * | 2012-07-02 | 2013-01-23 | 葛洲坝集团水泥有限公司 | Cement decomposition furnace with temperature PID fuzzy control system |
| CN104142625A (en) * | 2013-05-06 | 2014-11-12 | 宁夏嘉翔自控技术有限公司 | PID control algorithm of ferrosilicon process semicontinuous magnesium smelting furnace charge calcination automatic control system |
| CN103217013B (en) * | 2013-05-13 | 2015-02-11 | 北京和隆优化科技股份有限公司 | Optimization control method of temperature gradient inside rotary kiln |
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