CN113282120A - Time-limited heating method and temperature control method for heating furnace - Google Patents
Time-limited heating method and temperature control method for heating furnace Download PDFInfo
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Abstract
The invention discloses a time-limited heating method and a temperature control method for a heating furnace, wherein the time-limited heating method specifically comprises the following steps: step 1, confirming a target temperature interval and a heating-up stop time; step 2, acquiring a real-time temperature and an actual heating rate, calculating a temperature difference value and a residual heating time length between the real-time temperature and a target temperature interval, calculating a target heating rate by adopting the temperature difference value and the residual heating time length, and enabling the heating furnace to maintain the current state, and to carry out heating on the heating furnace or to carry out cooling on the heating furnace according to the actual heating rate and the target heating rate; and 3, repeating the step 2 until the real-time temperature falls on the target temperature interval, the real-time temperature exceeds the upper limit of the target temperature interval or the temperature rise stopping time is reached. The time-limited heating method provided by the invention is used for adjusting the firepower gear of the heating furnace by combining the target heating rate and the actual heating rate, so that the time-limited heating is realized; the temperature control method realizes the automatic control of the temperature of the heating furnace after the heating furnace is heated in a limited time.
Description
Technical Field
The application relates to the technical field of heating furnaces, in particular to a time-limited heating method and a temperature control method for a heating furnace.
Background
In the heating process of the starting of the heating furnace, the temperature of the heating furnace needs to be adjusted to a target temperature interval within a set time, and in order to reasonably and quickly raise the temperature to the target temperature interval, the firepower of the heating furnace needs to be reasonably controlled. At present, domestic oil field enterprises generally adopt a manual on-duty mode to control a heating furnace, on one hand, a large amount of manpower input is needed, and on the other hand, all-weather accurate control cannot be guaranteed so that great energy waste exists.
Disclosure of Invention
In view of the above technical problems, the present application provides a temperature raising method for safely and quickly raising the temperature of a heating furnace to a target temperature, and provides a temperature control method for a heating furnace on the basis of a time-limited temperature raising method for a heating furnace.
A time-limited temperature rise method for a heating furnace comprises the following steps:
step 1, confirming a target temperature interval and a heating-up stop time;
step 2, acquiring a real-time temperature, calculating an actual heating rate of the heating furnace in a preset time period, calculating a temperature difference value between the real-time temperature and a lower limit temperature of a target temperature interval, calculating a residual heating duration of a current time and a heating stop time, calculating a target heating rate by using the temperature difference value and the residual heating duration, and enabling the heating furnace to maintain the current situation, and to carry out heating on the heating furnace or carry out fire reduction on the heating furnace according to the magnitude relation between the actual heating rate and the target heating rate;
and 3, repeating the step 2 until the real-time temperature falls on the target temperature interval, the real-time temperature exceeds the upper limit of the target temperature interval or the temperature rise stopping time is reached.
Preferably, the step 2 of igniting the heating furnace, reducing the temperature of the heating furnace or maintaining the current situation of the heating furnace according to the magnitude relationship between the actual temperature rise rate and the target temperature rise rate specifically includes:
when the ratio of the actual heating rate to the target heating rate is less than 1, the heating furnace is ignited;
when the ratio of the actual heating rate to the target heating rate is greater than 1 and smaller than a first set value, the heating furnace maintains the current situation;
and when the ratio of the actual heating rate to the target heating rate is larger than a first set value, reducing the fire of the heating furnace.
Preferably, when the ratio of the actual heating rate to the target heating rate is smaller than a second set value, the heating furnace is heated at least twice at one time; and when the ratio of the actual heating rate to the target heating rate is greater than a second set value and less than 1, the heating furnace is once ignited.
Preferably, when the ratio of the actual heating rate to the target heating rate is greater than the first set value and less than the third set value, the heating furnace is subjected to one-time fire reduction; when the ratio of the actual heating rate to the target heating rate is larger than a third set value, the heating furnace is subjected to fire reduction at least twice at one time.
Preferably, the specific method for calculating the actual temperature rise rate of the heating furnace in the preset time period is as follows: the method comprises the steps of collecting a plurality of temperature data of a heating furnace in a preset time period, fitting the plurality of temperature data to obtain a fit line, and calculating the slope of the fit line to be the real-time actual heating rate.
A temperature control method comprises the time-limited temperature rising method for the heating furnace, and further comprises the following steps of 4:
setting a hosting temperature interval, acquiring the current temperature of the heating furnace, confirming the temperature change rate of the heating furnace in a preset time period, and setting a target change interval of the temperature change of the heating furnace according to the relation between the current temperature and the hosting temperature interval;
when the current temperature is lower than the upper limit temperature of the hosting temperature interval, maintaining the heating furnace at the current state, and carrying out ignition or fire reduction on the heating furnace according to the relation between the temperature change rate and the target change interval;
and when the current temperature is higher than the upper limit temperature of the hosting temperature interval, maintaining the heating furnace in the current state or reducing the fire of the heating furnace according to the relation between the temperature change rate and the target change interval.
Preferably, when the current temperature is lower than the upper limit temperature of the escrow temperature interval, the step of maintaining the current state of the heating furnace, the step of igniting the heating furnace, or the step of reducing the temperature of the heating furnace according to the relationship between the temperature change rate and the target change interval specifically includes:
if the temperature change rate falls on the target change interval, maintaining the current situation of the heating furnace;
and if the temperature change rate falls outside the target change interval, carrying out fire lifting or fire lowering on the heating furnace.
Preferably, when the current temperature is less than the upper limit temperature of the escrow temperature section, a temperature difference between the current temperature and the lower limit temperature of the escrow temperature section is divided into a plurality of difference sections, and a target variation section corresponding to each difference section is set.
Preferably, when the current temperature is greater than the upper limit temperature of the escrow temperature interval, the maintaining of the heating furnace in the current state or the reducing of the fire of the heating furnace according to the relationship between the temperature change rate and the target change interval specifically includes:
if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is larger than a fourth set value, reducing the fire of the heating furnace;
if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than a fourth set value, and the temperature change rate falls on a target change interval, keeping the heating furnace at the current state;
and if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than a fourth set value, and the temperature change rate falls outside the target change interval, reducing the fire of the heating furnace.
Preferably, if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is greater than a fourth set value, the reducing the temperature of the heating furnace specifically includes:
if the temperature change rate falls on a target change interval, reducing the temperature of the heating furnace once;
and if the temperature change rate is outside the target change interval, reducing the temperature of the heating furnace twice.
Compared with the prior art, the method has the following advantages:
(1) according to the time-limited heating method for the heating furnace, the firepower gear of the heating furnace is adjusted at any time by monitoring the temperature difference between the real-time temperature and the lower limit temperature of the target temperature interval and combining the target heating rate and the actual heating rate, so that the temperature of the heating furnace can be stably increased to the target temperature interval;
(2) according to the temperature control method, after the time-limited temperature rise method for the heating furnace is adopted to finish time-limited temperature rise, the firepower of the heating furnace is regulated and controlled according to the temperature change rate and the relation between the current temperature and the temperature interval of the support tube, so that the heating furnace is continuously heated and cooled or is maintained in the target temperature interval after the temperature is raised in a time-limited mode, and automatic control of the heating furnace is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a flowchart of a time-limited temperature-raising method for a heating furnace according to embodiment 1 of the present application;
fig. 2 is a flowchart of a method for controlling temperature according to embodiment 2 of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application.
The embodiments of the present application are set forth in the invention publication with reference to publication No. CN108829063A, and in the present embodiment, the operation of raising the temperature of the heating furnace is referred to as raising the fire, that is, raising the fire gear; the operation of lowering the temperature of the heating furnace is called fire lowering, namely, lowering the fire gear; the first fire lifting is a first fire raising gear, the first fire lowering is a first fire lowering gear, the second fire lowering is a second fire lowering gear, and the first fire raising gear and the second fire lowering gear are two fire lowering gears.
Example 1
The present embodiment proposes a time-limited temperature raising method for a heating furnace, and it should be known to those skilled in the art that the time-limited temperature raising method for a heating furnace described in the present embodiment is suitable for a case where a real-time temperature is less than a lower limit temperature of a target temperature interval.
Referring to fig. 1, the method for raising the temperature of the heating furnace in a limited time according to this embodiment specifically includes the following steps:
step 1, confirming a target temperature interval and a heating-up stop time;
step 2, acquiring a real-time temperature, calculating an actual heating rate of the heating furnace in a preset time period, calculating a temperature difference value between the real-time temperature and a lower limit temperature of a target temperature interval, calculating a residual heating duration of a current time and a heating stop time, calculating a target heating rate by using the temperature difference value and the residual heating duration, and enabling the heating furnace to maintain the current situation, and to carry out heating on the heating furnace or carry out fire reduction on the heating furnace according to the magnitude relation between the actual heating rate and the target heating rate;
and 3, repeating the step 2 until the real-time temperature falls on the target temperature interval, the real-time temperature exceeds the upper limit of the target temperature interval or the temperature rise stopping time is reached.
The application discloses a time-limited heating method for a heating furnace is through monitoring the temperature difference between the lower limit temperature between real-time temperature and the target temperature interval to combine target heating rate and actual heating rate to adjust the firepower gear of the heating furnace at any time, thereby adjust the temperature change in the next preset time according to the temperature change in the previous preset time period, so that the temperature of the heating furnace can rise stably, the adjustment of the temperature is more accurate, the energy is saved, the heating furnace is not required to be controlled by manpower, and the manpower is saved.
Specifically, in step 3, the time-limited temperature rise of the heating furnace is ended after the real-time temperature falls on the target temperature interval, the real-time temperature exceeds the upper limit of the target temperature interval or the temperature rise stop time is reached.
Preferably, the step 2 of igniting the heating furnace, reducing the temperature of the heating furnace or maintaining the current situation of the heating furnace according to the magnitude relationship between the actual temperature rise rate and the target temperature rise rate specifically includes:
when the ratio of the actual heating rate to the target heating rate is less than 1, the heating furnace is ignited;
when the ratio of the actual heating rate to the target heating rate is greater than 1 and smaller than a first set value, the heating furnace maintains the current situation;
and when the ratio of the actual heating rate to the target heating rate is larger than a first set value, reducing the fire of the heating furnace.
When the ratio of the actual heating rate to the target heating rate is less than 1, namely the actual heating rate of the heating furnace is less than the target heating rate within a preset time period, the temperature rise rate of the heating furnace is slow, and a firepower gear needs to be increased for the heating furnace.
Those skilled in the art should know that the first set value is greater than 1, and when the ratio of the actual heating rate to the target heating rate is greater than 1 and less than the first set value, the actual heating rate is close to the target heating rate, so that the heating furnace keeps the current fire power and the temperature of the heating furnace is raised steadily; the ratio of the actual heating rate to the target heating rate is larger than the first set value, the temperature rise speed in the heating furnace is too high, the stable operation of the heating furnace is not facilitated, and the heating furnace may be damaged.
Preferably, when the ratio of the actual heating rate to the target heating rate is smaller than a second set value, the heating furnace is heated at least twice at one time; and when the ratio of the actual heating rate to the target heating rate is greater than a second set value and less than 1, the heating furnace is once ignited.
Those skilled in the art should know that the second set value is less than 1, and when the ratio of the actual heating rate to the target heating rate is less than the second set value, which indicates that the actual heating rate is greatly different from the target heating rate, the operator should fire the heating furnace to increase the actual heating rate of the heating furnace to approach the target heating rate as soon as possible.
Preferably, when the ratio of the actual heating rate to the target heating rate is greater than the first set value and less than the third set value, the heating furnace is subjected to one-time fire reduction; when the ratio of the actual heating rate to the target heating rate is larger than a third set value, the heating furnace is subjected to fire reduction at least twice at one time.
Those skilled in the art should know that the third setting value is greater than 1, and when the ratio of the actual heating rate to the target heating rate is greater than the third setting value, the worker should reduce the temperature of the heating furnace to decrease the actual heating rate of the heating furnace as fast as possible and approach the target heating rate.
In this embodiment, a specific method for calculating the actual temperature increase rate of the heating furnace in the preset time period is as follows: the method comprises the steps of collecting a plurality of temperature data of a heating furnace in a preset time period, fitting the plurality of temperature data to obtain a fit line, and calculating the slope of the fit line to be the real-time actual heating rate.
The linear fitting after collecting a plurality of temperature data belongs to the common technical means, and the detailed description is omitted in the application.
In this embodiment, the target temperature range is set to 72 to 75 ℃, and after the temperature rise stop time is 3 hours, the first set value is 1.3, the second set value is 0.8, and the third set value is 1.5.
After the heating furnace is started and operates for 10min, the real-time temperature reaches 30 ℃, temperature data of the heating furnace in 10min is obtained and a fit line is obtained after fitting, the slope of the fit line is 2.4, the actual heating rate of the heating furnace is 2.4 ℃/h, the temperature difference between the current temperature and the lower limit temperature of a target temperature interval is 42 ℃, the residual heating time is 350min, the target heating rate is 7.2 ℃/h, the ratio of the actual heating rate to the target heating rate is smaller than a second set value, and the heating furnace is heated twice;
and after the heating furnace operates for 10min again, the real-time temperature reaches 31 ℃, the actual heating rate of the heating furnace within 10min is 6 ℃/h, the temperature difference between the current temperature and the lower limit temperature of the target temperature interval is 41 ℃, the residual heating time is 340min, the target heating rate is 7.24 ℃/h through calculation, the ratio of the actual heating rate to the target heating rate is greater than a second set value, and the heating furnace is heated for one gear.
And ending the time-limited temperature rise of the heating furnace when the temperature of the heating furnace falls within the range of 72-75 ℃, the temperature of the heating furnace is more than 75 ℃ or the time reaches 3 hours.
Example 2
Referring to fig. 2, this embodiment proposes a temperature control method based on embodiment 1, specifically including the time-limited temperature raising method for a heating furnace as described in embodiment 1, that is, adopting the time-limited temperature raising method for a heating furnace as described in embodiment 1, and after the real-time temperature falls on a target temperature interval, the real-time temperature exceeds an upper limit of the target temperature interval, or reaches a temperature raising stop time, and the time-limited temperature raising of the heating furnace is finished, further including step 4:
setting a hosting temperature interval, acquiring the current temperature of the heating furnace, confirming the temperature change rate of the heating furnace in a preset time period, and setting a target change interval according to the relationship between the current temperature and the hosting temperature interval;
when the current temperature is lower than the upper limit temperature of the hosting temperature interval, maintaining the heating furnace at the current state, and carrying out ignition or fire reduction on the heating furnace according to the relation between the temperature change rate and the target change interval;
and when the current temperature is higher than the upper limit temperature of the hosting temperature interval, maintaining the heating furnace in the current state or reducing the fire of the heating furnace according to the relation between the temperature change rate and the target change interval.
After the heating furnace is heated to the target temperature interval within the time limit after the furnace is started, the heating furnace needs to be continuously heated, cooled or maintained within the current target temperature interval.
Preferably, when the current temperature is lower than the upper limit temperature of the escrow temperature interval, the step of maintaining the current state of the heating furnace, the step of igniting the heating furnace, or the step of reducing the temperature of the heating furnace according to the relationship between the temperature change rate and the target change interval specifically includes:
if the temperature change rate falls on the target change interval, maintaining the current situation of the heating furnace;
and if the temperature change rate falls outside the target change interval, carrying out fire lifting or fire lowering on the heating furnace.
When the current temperature is lower than the lower limit temperature of the hosting temperature interval or falls on the hosting temperature interval, if the temperature change rate falls on the target change interval, the heating furnace is kept in the current state; if the temperature change rate is outside the target change interval and is greater than the upper limit of the target change interval, reducing the fire of the heating furnace; and if the temperature change rate falls outside the target change interval and is less than the lower limit of the target change interval, the heating furnace is ignited.
Taking the example that the heating furnace continues to heat after finishing the limited temperature rise, the hosting temperature interval is 50-75 ℃, the current temperature of the heating furnace is 30 ℃ after heating for 10min, the temperature rise speed of the heating furnace in the past 10min is 2.4 ℃/h, the target change interval is set to be 10-14 ℃/h, the current temperature is lower than the lower limit temperature of the hosting temperature interval, the temperature change rate falls outside the target change interval and is lower than the lower limit of the target change interval, and the heating furnace needs to be ignited.
If the temperature change rate of the heating furnace in the past 10min falls within the range of 10-14 ℃/h, maintaining the current situation of the heating furnace; and if the temperature change rate of the heating furnace in the past 10min is more than 14 ℃/h, reducing the temperature of the heating furnace.
Preferably, when the current temperature is less than the upper limit temperature of the escrow temperature section, a temperature difference between the current temperature and the lower limit temperature of the escrow temperature section is divided into a plurality of difference sections, and a target variation section corresponding to each difference section is set.
In this embodiment, taking the example that the heating furnace continues to heat up after the heating furnace finishes the limited temperature rise, the temperature difference between the current temperature and the lower limit temperature of the hosting temperature interval is divided into three intervals of 0-5 ℃, 5-15 ℃ and more than 15 ℃, and the target change intervals corresponding to the three intervals are 3-6 ℃/h, 6-10 ℃/h and 10-14 ℃/h respectively.
In this embodiment, a corresponding target variation interval is set according to the temperature difference, so that the temperature of the heating furnace is adjusted at a reasonable speed under the condition of different temperature differences.
Preferably, when the current temperature is greater than the upper limit temperature of the escrow temperature interval, the maintaining of the current state of the heating furnace or the fire reduction of the heating furnace according to the relationship between the temperature change rate and the target change interval specifically includes:
if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is larger than a fourth set value, reducing the fire of the heating furnace;
if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than a fourth set value, and the temperature change rate falls on a target change interval, keeping the heating furnace at the current state;
and if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than a fourth set value, and the temperature change rate falls outside the target change interval, reducing the fire of the heating furnace.
When the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is larger than a fourth set value, the difference between the current temperature and the upper limit temperature of the hosting temperature interval is larger, and the heating furnace is subjected to fire reduction so as to reduce the temperature of the heating furnace as soon as possible;
after the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than the fourth set value, the current temperature is close to the upper limit temperature of the hosting temperature interval, and the heating furnace is maintained at the current state or is subjected to fire reduction according to the relation between the temperature change rate in the current preset time period and the target change interval, so that the temperature change rate in the next preset time period is controlled to enable the current temperature to be stably reduced and fall on the hosting temperature interval.
Specifically, if the temperature change rate falls on a target change interval, the heating furnace is subjected to fire reduction once; and if the temperature change rate is outside the target change interval, reducing the temperature of the heating furnace twice.
Taking the heating process of the heating furnace as an example, the fourth set value is 5 ℃/h, the target change interval is that the speed of temperature change is less than or equal to-3 ℃/h, the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is greater than 5 ℃, and if the temperature change rate in the current preset time period is greater than-3 ℃/h, the heating furnace is subjected to fire reduction twice; and if the temperature change rate in the current preset time period is less than or equal to-3 ℃/h, reducing the temperature of the heating furnace once.
And when the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is greater than a fourth set value, the difference between the current temperature and the upper limit temperature of the hosting temperature interval is larger, and if the temperature change rate falls outside the target change interval, the heating furnace is subjected to fire reduction twice, so that the temperature of the heating furnace is reduced as soon as possible.
The foregoing is illustrative of one embodiment provided in connection with the detailed description and is not intended to limit the disclosure to the particular embodiments described. Similar or identical methods, structures, etc. as used herein, or several technical deductions or substitutions made on the premise of the idea of the present application, should be considered as the protection scope of the present application.
Claims (10)
1. A time-limited temperature rise method for a heating furnace is characterized by comprising the following steps:
step 1, confirming a target temperature interval and a heating-up stop time;
step 2, acquiring a real-time temperature, calculating an actual heating rate of the heating furnace in a preset time period, calculating a temperature difference value between the real-time temperature and a lower limit temperature of a target temperature interval, calculating a residual heating duration of a current time and a heating stop time, calculating a target heating rate by using the temperature difference value and the residual heating duration, and enabling the heating furnace to maintain the current situation, and to carry out heating on the heating furnace or carry out fire reduction on the heating furnace according to the magnitude relation between the actual heating rate and the target heating rate;
and 3, repeating the step 2 until the real-time temperature falls on the target temperature interval, the real-time temperature exceeds the upper limit of the target temperature interval or the temperature rise stopping time is reached.
2. The time-limited heating method for the heating furnace according to claim 1, wherein the step 2 of raising the temperature of the heating furnace, lowering the temperature of the heating furnace, or maintaining the current state of the heating furnace according to the magnitude relationship between the actual temperature-raising rate and the target temperature-raising rate specifically comprises:
when the ratio of the actual heating rate to the target heating rate is less than 1, the heating furnace is ignited;
when the ratio of the actual heating rate to the target heating rate is greater than 1 and smaller than a first set value, the heating furnace maintains the current situation;
and when the ratio of the actual heating rate to the target heating rate is larger than a first set value, reducing the fire of the heating furnace.
3. The time-limited heating method for the heating furnace according to claim 2, wherein when the ratio of the actual heating rate to the target heating rate is less than a second set value, the heating furnace is once ignited at least twice; and when the ratio of the actual heating rate to the target heating rate is greater than a second set value and less than 1, the heating furnace is once ignited.
4. The time-limited heating method for the heating furnace according to claim 2, wherein when the ratio of the actual heating rate to the target heating rate is greater than the first set value and less than the third set value, the heating furnace is once fired; when the ratio of the actual heating rate to the target heating rate is larger than a third set value, the heating furnace is subjected to fire reduction at least twice at one time.
5. The time-limited heating method for the heating furnace according to claim 1, wherein the specific method for calculating the actual heating rate of the heating furnace in the preset time period is as follows: the method comprises the steps of collecting a plurality of temperature data of a heating furnace in a preset time period, fitting the plurality of temperature data to obtain a fit line, and calculating the slope of the fit line to be the real-time actual heating rate.
6. A temperature control method comprising the time-limited temperature raising method for a heating furnace according to any one of claims 1 to 5, further comprising step 4:
setting a hosting temperature interval, acquiring the current temperature of the heating furnace, confirming the temperature change rate of the heating furnace in a preset time period, and setting a target change interval of the temperature change of the heating furnace according to the relation between the current temperature and the hosting temperature interval;
when the current temperature is lower than the upper limit temperature of the hosting temperature interval, maintaining the heating furnace at the current state, and carrying out ignition or fire reduction on the heating furnace according to the relation between the temperature change rate and the target change interval;
and when the current temperature is higher than the upper limit temperature of the hosting temperature interval, maintaining the heating furnace in the current state or reducing the fire of the heating furnace according to the relation between the temperature change rate and the target change interval.
7. The method according to claim 6, wherein when the current temperature is lower than the upper limit temperature of the escrow temperature interval, the maintaining of the heating furnace as it is, the warming of the heating furnace, or the cooling of the heating furnace according to the relationship between the temperature change rate and the target change interval specifically includes:
if the temperature change rate falls on the target change interval, maintaining the current situation of the heating furnace;
and if the temperature change rate falls outside the target change interval, carrying out fire lifting or fire lowering on the heating furnace.
8. The temperature control method according to claim 7, wherein when the current temperature is less than the upper limit temperature of the escrow temperature interval, a temperature difference between the current temperature and the lower limit temperature of the escrow temperature interval is divided into a plurality of difference intervals, and target variation intervals corresponding to the respective difference intervals are set.
9. The method according to claim 6, wherein when the current temperature is greater than the upper limit temperature of the escrow temperature interval, the maintaining the current state of the heating furnace or the reducing the temperature of the heating furnace according to the relationship between the temperature change rate and the target change interval specifically comprises:
if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is larger than a fourth set value, reducing the fire of the heating furnace;
if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than a fourth set value, and the temperature change rate falls on a target change interval, keeping the heating furnace at the current state;
and if the temperature difference between the current temperature and the upper limit temperature of the hosting temperature interval is smaller than a fourth set value, and the temperature change rate falls outside the target change interval, reducing the fire of the heating furnace.
10. The method according to claim 9, wherein if the temperature difference between the current temperature and the upper limit temperature of the escrow temperature interval is greater than a fourth set value, the reducing the temperature of the heating furnace specifically comprises:
if the temperature change rate falls on a target change interval, reducing the temperature of the heating furnace once;
and if the temperature change rate is outside the target change interval, reducing the temperature of the heating furnace twice.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114489195A (en) * | 2021-12-30 | 2022-05-13 | 成都安则优科技有限公司 | Constant-temperature crystal oscillator stepping type heating method, device and system |
| CN116116354A (en) * | 2023-02-07 | 2023-05-16 | 安庆瑞泰化工有限公司 | Modified polyester resin polycondensation reaction equipment with intelligent temperature control forming function |
| CN117389358A (en) * | 2023-12-12 | 2024-01-12 | 广东摩尔物联技术有限公司 | Temperature control method, device, control equipment and reaction kettle |
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| CN114489195A (en) * | 2021-12-30 | 2022-05-13 | 成都安则优科技有限公司 | Constant-temperature crystal oscillator stepping type heating method, device and system |
| CN116116354A (en) * | 2023-02-07 | 2023-05-16 | 安庆瑞泰化工有限公司 | Modified polyester resin polycondensation reaction equipment with intelligent temperature control forming function |
| CN117389358A (en) * | 2023-12-12 | 2024-01-12 | 广东摩尔物联技术有限公司 | Temperature control method, device, control equipment and reaction kettle |
| CN117389358B (en) * | 2023-12-12 | 2024-03-01 | 广东摩尔物联技术有限公司 | Temperature control method, device, control equipment and reaction kettle |
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