CN114149164B - Hot-blast stove temperature regulation control method, storage medium and centrifugal dehydration drying system - Google Patents
Hot-blast stove temperature regulation control method, storage medium and centrifugal dehydration drying system Download PDFInfo
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- CN114149164B CN114149164B CN202111362059.1A CN202111362059A CN114149164B CN 114149164 B CN114149164 B CN 114149164B CN 202111362059 A CN202111362059 A CN 202111362059A CN 114149164 B CN114149164 B CN 114149164B
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- preset
- hydraulic torque
- temperature
- blast stove
- hot blast
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
Abstract
The invention relates to a hot blast stove temperature regulation control method, a storage medium and a centrifugal dehydration drying system, and relates to the technical field of centrifugal dehydration drying, wherein the centrifugal dehydration drying system is stopped, a feed pump and a dosing pump stop working, and a cleaning water electromagnetic valve is opened; the hot blast stove keeps the original set temperature to operate; comparing the current hydraulic torque with a first preset hydraulic torque value; reducing the frequency of a main machine of the drying centrifugal machine to a first preset frequency, and simultaneously increasing the original set temperature of the hot blast stove to the first preset temperature; comparing the current hydraulic torque with a second preset hydraulic torque value; reducing the operating frequency of the hydraulic station to a second preset frequency; judging the magnitudes of the hydraulic torque and a third preset hydraulic torque value, and judging whether the hearth temperature of the hot blast stove reaches a first preset temperature or not; and closing the hot blast stove. The cyclone separator has the advantages that the problems of pipeline wet mud accumulation, cyclone separator wet mud accumulation and the like caused by insufficient system heat can be avoided, the maintenance cost is reduced, and the labor intensity of workers is reduced.
Description
Technical Field
The invention relates to the technical field of centrifugal dehydration and drying, in particular to a hot blast stove temperature regulation control method, a storage medium and a centrifugal dehydration and drying system.
Background
In a centrifugal dehydration drying system, a hot blast stove is used as a heat source, the temperature regulation control of the hot blast stove in the normal operation process is important, and the hot blast stove is directly related to the stability of the system. However, if the temperature of the hot blast stove is improperly adjusted in the shutdown process of the centrifugal dehydration drying system, wet mud can be accumulated in a pipeline behind the drying centrifuge and in the cyclone separator, and the stable operation of the whole system is influenced.
In the shutdown process of the centrifugal dehydration drying system, although the feed pump and the dosing pump are turned off first, no new materials need to be treated, a large amount of materials still remain in the drying centrifuge cavity, which need to be converted into dry powder by using heat consumption and collected by the cyclone separator, and a large amount of cleaning water is discharged when the drying centrifuge is stopped, which also needs to be converted into steam by using heat consumption and discharged by using the exhaust gas discharge fan.
If the temperature control of the hot blast stove and the time control of stopping the hot blast stove are not good in the process, wet mud in a pipeline behind a drying centrifuge is easily accumulated, even a great amount of wet mud is accumulated in a cyclone separator, a manhole is required to be opened for cleaning the wet mud, and the wet mud is manually cleaned in the pipeline, so that the labor intensity is high.
The foregoing description is provided for general background information and does not necessarily constitute prior art.
Disclosure of Invention
The invention aims to provide a hot blast stove temperature regulation control method, a storage medium and a centrifugal dehydration drying system, which can avoid the problems of pipeline wet mud accumulation, cyclone separator wet mud accumulation and the like caused by insufficient system heat, reduce maintenance cost and reduce labor intensity of workers.
The invention provides a hot blast stove temperature regulation control method, which comprises the following steps:
s1: stopping the centrifugal dehydration drying system, stopping working of the feeding pump and the dosing pump, opening the cleaning water electromagnetic valve, and entering the step S2;
s2: the hot blast stove keeps the original set temperature to operate, and the step S3 is carried out;
s3: comparing the current hydraulic torque with a first preset hydraulic torque value;
if the hydraulic torque is more than or equal to the first preset hydraulic torque value, re-entering the step S2;
if the hydraulic torque is smaller than the first preset hydraulic torque value, entering a step S4;
s4: reducing the frequency of a main machine of the drying centrifugal machine to a first preset frequency, simultaneously increasing the original set temperature of the hot blast stove to the first preset temperature, and entering into the step S5;
s5: comparing the current hydraulic torque with a second preset hydraulic torque value;
if the hydraulic torque is more than or equal to the second preset hydraulic torque value, re-entering the step S4;
if the hydraulic torque is smaller than the second preset hydraulic torque value, entering a step S6;
s6: reducing the operation frequency of the hydraulic station to a second preset frequency, and entering into the step S7;
s7: judging the magnitudes of the hydraulic torque and a third preset hydraulic torque value, and judging whether the hearth temperature of the hot blast stove reaches a first preset temperature or not;
if the hydraulic torque is not less than the third preset hydraulic torque value, the hearth temperature of the hot blast stove does not reach the first preset temperature, and the step S6 is restarted;
if the hydraulic torque is more than or equal to the third preset hydraulic torque value, the hearth temperature of the hot blast stove reaches the first preset temperature, and the step S6 is re-entered;
if the hydraulic torque is smaller than the third preset hydraulic torque value, the hearth temperature of the hot blast stove does not reach the first preset temperature, and the step S6 is re-entered;
if the hydraulic torque is smaller than the third preset hydraulic torque value, the hearth temperature of the hot-blast stove reaches the first preset temperature, and then the step S8 is carried out;
s8: and closing the hot blast stove.
Further, the first preset hydraulic torque value is 30bar, the first preset frequency is 20Hz, the first preset temperature is 240 ℃, the second preset hydraulic torque value is 20bar, the second preset frequency is 10Hz, and the third preset hydraulic torque value is 15bar.
The invention also provides a computer storage medium, which comprises a computer program, wherein when the computer program is executed, the temperature of the hot blast stove is regulated and controlled by executing the hot blast stove temperature regulation and control method.
Further, the computer storage medium may be a PLC program controller.
The invention also provides a centrifugal dewatering and drying system, which is controlled by adopting the hot blast stove temperature regulation control method.
According to the hot-blast stove temperature regulation control method, the storage medium and the centrifugal dehydration drying system, when the centrifugal dehydration drying system is stopped, the problems of pipeline wet mud accumulation, cyclone separator wet mud accumulation and the like caused by insufficient heat of the hot-blast stove can be avoided through regulation control of the stove temperature of the hot-blast stove, so that the maintenance cost is reduced, and the labor intensity of workers is reduced.
Drawings
Fig. 1 is a schematic flow chart of a method for controlling temperature adjustment of a hot blast stove according to an embodiment of the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
The terms first, second, third, fourth and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
Fig. 1 is a schematic flow chart of a method for controlling temperature adjustment of a hot blast stove according to an embodiment of the present invention. Referring to fig. 1, the method for controlling temperature adjustment of a hot blast stove provided in this embodiment includes the following steps:
s1: stopping the centrifugal dehydration drying system, stopping working of the feeding pump and the dosing pump, opening the cleaning water electromagnetic valve, and entering the step S2;
s2: the hot blast stove keeps the original set temperature to run, is used for continuously processing the residual materials in the centrifugal dehydration drying system, and enter the step S3;
s3: comparing the current hydraulic torque with a first preset hydraulic torque value, wherein the first preset hydraulic torque value is 30bar;
if the hydraulic torque is more than or equal to the first preset hydraulic torque value, re-entering the step S2;
if the hydraulic torque is smaller than the first preset hydraulic torque value, the residual materials in the centrifugal dehydration drying system are greatly reduced, and the step S4 is performed;
s4: reducing the frequency of a main machine of the drying centrifugal machine to a first preset frequency, starting low-speed cleaning, wherein the first preset frequency is 20Hz, simultaneously increasing the original set temperature of the hot blast stove to the first preset temperature, providing enough heat for the subsequent treatment of cleaning water, and entering the step S5, wherein the first preset temperature is 240 ℃;
s5: comparing the current hydraulic torque with a second preset hydraulic torque value, wherein the second preset hydraulic torque value is 20bar;
if the hydraulic torque is more than or equal to the second preset hydraulic torque value, re-entering the step S4;
if the hydraulic torque is smaller than the second preset hydraulic torque value, entering a step S6;
s6: reducing the operating frequency of the hydraulic station to a second preset frequency to ensure the dryness of the solid-phase end discharge of the drying centrifuge, reducing the heat consumption of a centrifugal dehydration drying system, wherein the second preset frequency is 10Hz, and entering into the step S7;
s7: judging the magnitudes of hydraulic torque and a third preset hydraulic torque value, wherein the third preset hydraulic torque value is 15bar, and meanwhile, whether the hearth temperature of the hot blast stove reaches a first preset temperature or not;
if the hydraulic torque is not less than the third preset hydraulic torque value, the hearth temperature of the hot blast stove does not reach the first preset temperature, and the step S6 is restarted; if the hydraulic torque is more than or equal to the third preset hydraulic torque value, the hearth temperature of the hot blast stove reaches the first preset temperature, and the step S6 is re-entered; if the hydraulic torque is smaller than the third preset hydraulic torque value, the hearth temperature of the hot blast stove does not reach the first preset temperature, and the step S6 is re-entered;
if the hydraulic torque is smaller than the third preset hydraulic torque value, and the hearth temperature of the hot air furnace reaches the first preset temperature (240 ℃), the residual materials in the centrifugal dehydration drying system are almost emptied, the operation of the hot air furnace and the drying centrifuge can be stopped, the waste heat in the centrifugal dehydration drying system is utilized to evaporate the cleaning water in the drying centrifuge cavity, and finally, the waste gas is discharged out of the pipeline of the centrifugal dehydration drying system by the waste gas discharge fan, and the hot air furnace is closed.
The embodiment also provides a computer storage medium, which comprises a computer program, and when the computer program is executed, the temperature of the hot blast stove is regulated and controlled by executing the hot blast stove temperature regulation control method. In particular, the computer storage medium may be a PLC program controller.
The embodiment also provides a centrifugal dewatering and drying system, which is controlled by adopting the hot blast stove temperature regulation control method; for other technical features of the centrifugal dewatering and drying system, please refer to the prior art, and the description thereof is omitted herein.
Based on the above description, the invention has the advantages that:
1. according to the hot-blast stove temperature regulation control method provided by the invention, when the centrifugal dehydration drying system is stopped, the problems of pipeline wet mud accumulation, cyclone separator wet mud accumulation and the like caused by insufficient system heat can be avoided through regulating and controlling the stove temperature of the hot-blast stove, so that the maintenance cost is reduced, and the labor intensity of workers is reduced.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The hot blast stove temperature regulation control method is characterized by comprising the following steps of:
s1: stopping the centrifugal dehydration drying system, stopping working of the feeding pump and the dosing pump, opening the cleaning water electromagnetic valve, and entering the step S2;
s2: the hot blast stove keeps the original set temperature to operate, and the step S3 is carried out;
s3: comparing the current hydraulic torque with a first preset hydraulic torque value;
if the hydraulic torque is more than or equal to the first preset hydraulic torque value, re-entering the step S2;
if the hydraulic torque is smaller than the first preset hydraulic torque value, entering a step S4;
s4: reducing the frequency of a main machine of the drying centrifugal machine to a first preset frequency, simultaneously increasing the original set temperature of the hot blast stove to the first preset temperature, and entering into the step S5;
s5: comparing the current hydraulic torque with a second preset hydraulic torque value;
if the hydraulic torque is more than or equal to the second preset hydraulic torque value, re-entering the step S4;
if the hydraulic torque is smaller than the second preset hydraulic torque value, entering a step S6;
s6: reducing the operation frequency of the hydraulic station to a second preset frequency, and entering into the step S7;
s7: judging the magnitudes of the hydraulic torque and a third preset hydraulic torque value, and judging whether the hearth temperature of the hot blast stove reaches a first preset temperature or not;
if the hydraulic torque is not less than the third preset hydraulic torque value, the hearth temperature of the hot blast stove does not reach the first preset temperature, and the step S6 is restarted;
if the hydraulic torque is more than or equal to the third preset hydraulic torque value, the hearth temperature of the hot blast stove reaches the first preset temperature, and the step S6 is re-entered;
if the hydraulic torque is smaller than the third preset hydraulic torque value, the hearth temperature of the hot blast stove does not reach the first preset temperature, and the step S6 is re-entered;
if the hydraulic torque is smaller than the third preset hydraulic torque value, the hearth temperature of the hot-blast stove reaches the first preset temperature, and then the step S8 is carried out;
s8: and closing the hot blast stove.
2. The hot blast stove temperature regulation control method according to claim 1, wherein the first preset hydraulic torque value is 30bar, the first preset frequency is 20Hz, the first preset temperature is 240 ℃, the second preset hydraulic torque value is 20bar, the second preset frequency is 10Hz, and the third preset hydraulic torque value is 15bar.
3. A computer storage medium comprising a computer program which, when executed, performs the stove temperature regulation control method of any one of claims 1 to 2 for regulating and controlling the temperature of the stove.
4. A computer storage medium according to claim 3, wherein the computer storage medium is a PLC program controller.
5. A centrifugal dewatering and drying system, characterized in that the centrifugal dewatering and drying system is controlled by adopting the hot blast stove temperature regulation control method according to any one of claims 1 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362059.1A CN114149164B (en) | 2021-11-17 | 2021-11-17 | Hot-blast stove temperature regulation control method, storage medium and centrifugal dehydration drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111362059.1A CN114149164B (en) | 2021-11-17 | 2021-11-17 | Hot-blast stove temperature regulation control method, storage medium and centrifugal dehydration drying system |
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| Publication Number | Publication Date |
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| CN114149164A CN114149164A (en) | 2022-03-08 |
| CN114149164B true CN114149164B (en) | 2023-09-22 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB403752A (en) * | 1931-07-16 | 1934-01-04 | Bailey Meter Co | Improvements relating to the remote control of boiler feedwater regulators and the like |
| CA1129038A (en) * | 1978-05-08 | 1982-08-03 | Chun-Keung Leung | Timing optimization control |
| US5616995A (en) * | 1993-02-22 | 1997-04-01 | General Electric Company | Systems and methods for controlling a draft inducer for a furnace |
| WO2001053750A1 (en) * | 2000-01-10 | 2001-07-26 | Lochinvar Corporation | Water heater with continuously variable air and fuel input |
| KR200315647Y1 (en) * | 2003-03-11 | 2003-06-09 | 코리아세이브에너텍(주) | automatic opening and shutting device of boiler stovepipe |
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2021
- 2021-11-17 CN CN202111362059.1A patent/CN114149164B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB403752A (en) * | 1931-07-16 | 1934-01-04 | Bailey Meter Co | Improvements relating to the remote control of boiler feedwater regulators and the like |
| CA1129038A (en) * | 1978-05-08 | 1982-08-03 | Chun-Keung Leung | Timing optimization control |
| US5616995A (en) * | 1993-02-22 | 1997-04-01 | General Electric Company | Systems and methods for controlling a draft inducer for a furnace |
| WO2001053750A1 (en) * | 2000-01-10 | 2001-07-26 | Lochinvar Corporation | Water heater with continuously variable air and fuel input |
| KR200315647Y1 (en) * | 2003-03-11 | 2003-06-09 | 코리아세이브에너텍(주) | automatic opening and shutting device of boiler stovepipe |
| CN205137884U (en) * | 2015-10-21 | 2016-04-06 | 上海市离心机械研究所有限公司 | Centrifugal dehydration mummification system hot -blast furnace improvement structure |
| JP2018188963A (en) * | 2017-04-28 | 2018-11-29 | 株式会社パロマ | Motor driver for water heater, and water heater |
| JP2020051711A (en) * | 2018-09-28 | 2020-04-02 | ダイニチ工業株式会社 | Hot air heating device |
| CN109437506A (en) * | 2018-12-19 | 2019-03-08 | 上海市离心机械研究所有限公司 | Centrifugal drying integral system and its fast cooling method |
| CN112393251A (en) * | 2020-10-14 | 2021-02-23 | 上海市政工程设计研究总院（集团）有限公司 | Method for controlling temperature of hearth of sludge incinerator |
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| CN114149164A (en) | 2022-03-08 |
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