CN113432113A - System and method for adjusting temperature of superheated steam by using coal-fired boiler desuperheating water - Google Patents
System and method for adjusting temperature of superheated steam by using coal-fired boiler desuperheating water Download PDFInfo
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- CN113432113A CN113432113A CN202110802916.9A CN202110802916A CN113432113A CN 113432113 A CN113432113 A CN 113432113A CN 202110802916 A CN202110802916 A CN 202110802916A CN 113432113 A CN113432113 A CN 113432113A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 238000010977 unit operation Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
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Abstract
The invention discloses a system and a method for regulating the temperature of superheated steam by using coal-fired boiler desuperheating water. Superheated steam sequentially passes through a low-temperature superheater inlet header, a low-temperature superheater outlet header, a platen superheater inlet header, a platen superheater outlet header, a high-temperature superheater inlet header, a high-temperature superheater and a high-temperature superheater outlet header along the flowing direction. Four groups of low-temperature superheaters and outlet header thereof are arranged along the width of the boiler; four groups of screen superheaters and outlet headers thereof are arranged along the width of the boiler. And superheater primary desuperheating water is arranged between the outlet of the low-temperature superheater and the inlet header of the platen superheater, and superheater secondary desuperheating water is arranged between the outlet of the platen superheater and the inlet header of the high-temperature superheater. The method realizes the quick, flexible and economic adjustment of the superheated steam parameters, avoids the adjustment method of simply and extensively inputting the desuperheating water when the superheater has overtemperature, effectively reduces the use amount and frequency of the desuperheating water, and improves the economical efficiency of unit operation.
Description
Technical Field
The invention belongs to the technical field of coal-fired power generating sets, and particularly relates to a system and a method for adjusting the temperature of superheated steam by using water for reducing temperature of a coal-fired boiler.
Background
Under the influence of coal resources, most of domestic coal-fired power generating sets have different degrees of actual coal types deviating from design conditions, frequent change of coal quality causes changes of boiler combustion characteristics, and problems such as deviation of combustion, overheating of a heating surface, difficulty in adjustment of steam parameters and the like cannot be solved through traditional combustion adjustment and optimization, so that a system of a traditional coal-fired power generating set needs to be optimized to meet operation requirements in a new form.
The existing coal-fired generating set basically adopts secondary or tertiary superheater desuperheating water for a superheated steam desuperheating system, no matter a subcritical or supercritical unit, the spraying mode adopts the design of the left side and the right side on a heating surface outlet header pipeline, and generally, the left side and the right side of a front heating surface header and a rear heating surface header are crossed once to reduce the nonuniformity of steam temperature. Although the left and right side partitions and the inlet and outlet headers are crossed, for a large-capacity high-parameter boiler, the span area in the width direction is large, the tube array mode of an internal heating surface is complex, and in addition, the uneven heat absorption of the heating surface is easily generated due to the dust deposition, coking and the like formed by long-term operation, so that the over-spraying and extensive adjustment of the temperature-reducing water quantity are caused, and the economical efficiency of unit operation is influenced. Therefore, the method has the advantages of simple logic and reliable operation, and only needs to judge the overtemperature condition of the heating surface according to the temperature monitoring condition on the outlet header of the heating surface and directly reduces the temperature by spraying water. The defects are extensive adjustment and poor economy. Namely, the overtemperature position and reason of the heating surface are not accurately judged by zoning, and adjustment measures are pertinently taken. The economic impact of water spray cooling on the unit is obvious, and according to statistics, the coal consumption of the unit for generating electricity is increased by 0.01-0.04 g/kWh (the smaller the unit capacity is, the larger the impact is) when the temperature reduction water amount of superheated steam is increased by 1 t/h.
Through theoretical analysis and experiments, the superheated steam overtemperature of many units is mainly caused by unbalanced heat absorption distribution of the heating surfaces, for example, the heat absorption of the heating surfaces of different regions can be accurately monitored, and the heat absorption of the heating surfaces of each region can be dynamically adjusted and controlled in real time, so that the use of the desuperheater water of the superheater can be effectively reduced, and the flexibility and the economy of superheated steam parameter adjustment are improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for adjusting the temperature of superheated steam by using coal-fired boiler desuperheating water, so that the flexibility and the economy of superheated steam parameter adjustment are improved.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a system for regulating the temperature of superheated steam by attemperation water of a coal-fired boiler comprises a low-temperature superheater inlet header, a low-temperature superheater outlet header, a platen superheater inlet header, a platen superheater outlet header, a high-temperature superheater inlet header, a high-temperature superheater outlet header and a steam turbine high-pressure cylinder;
superheated steam enters the low-temperature superheater from the low-temperature superheater inlet header and then enters the low-temperature superheater outlet header after heat absorption, four groups of low-temperature superheater outlet headers are arranged along the width direction of the boiler, and the superheated steam enters the platen superheater inlet header through the low-temperature superheater outlet header; superheated steam enters the platen superheater from the platen superheater inlet header and is absorbed by heat and then reaches the platen superheater outlet header, four groups of platen superheater outlet headers are arranged along the width direction of the boiler, and the superheated steam enters the high-temperature superheater inlet header from the platen superheater outlet header; and then the superheated steam enters the high-temperature superheater from the high-temperature superheater inlet header, is subjected to heat absorption to the high-temperature superheater outlet header and finally enters the high-pressure cylinder of the steam turbine to do work.
The invention has the further improvement that the low-temperature superheater outlet header and the platen superheater outlet header are both provided with temperature measuring points, so that the heat absorption capacity of the corresponding heating surface can be monitored and judged in real time, and the opening of a superheater desuperheating water regulating valve on a pipeline corresponding to each outlet header is guided to be regulated, so that the temperature of superheated steam is regulated.
The invention has the further improvement that the outlets of the low-temperature superheaters are connected with four groups of low-temperature superheater outlet header tanks, and the low-temperature superheater outlet header tanks are uniformly arranged along the width direction of the boiler.
The invention is further improved in that a pipeline connected with the low-temperature superheater outlet header is provided with a superheater primary desuperheating water regulating valve for regulating the temperature of superheated steam.
The invention is further improved in that the outlets of the platen superheaters are connected with four groups of platen superheater outlet header tanks, and the platen superheater outlet header tanks are uniformly arranged along the width direction of the boiler.
The invention is further improved in that a pipeline connected with the outlet header of the platen superheater is provided with a secondary superheater desuperheating water regulating valve for regulating the temperature of superheated steam.
A method for adjusting the temperature of superheated steam by attemperation water of a coal-fired boiler is based on a system for adjusting the temperature of superheated steam by attemperation water of the coal-fired boiler, and comprises the following steps:
before entering a high-pressure cylinder of a steam turbine to do work, superheated steam of the boiler sequentially passes through a low-temperature superheater, a platen superheater and a high-temperature superheater; superheated steam firstly enters from a low-temperature superheater inlet header and is absorbed by the low-temperature superheater to a low-temperature superheater outlet header, the low-temperature superheater is arranged along the width direction of the boiler and is uniformly divided into four groups, each group is correspondingly connected with a low-temperature superheater outlet header, a temperature measuring point is arranged on the low-temperature superheater outlet header, and the steam temperature is accurately regulated by a superheater primary desuperheating water regulating valve on a superheated steam connecting pipeline through real-time temperature monitoring and comparison with the designed temperature; secondly, superheated steam enters from an inlet header of the platen superheater and is absorbed by the platen superheater to an outlet header of the platen superheater, the platen superheater is arranged along the width direction of the boiler and is uniformly divided into four groups, each group is correspondingly connected with an outlet header of the platen superheater, a temperature measuring point is arranged on the outlet header of the platen superheater, and the temperature of the steam is accurately regulated by a secondary superheater temperature reduction water regulating valve on a superheated steam connecting pipeline through real-time temperature monitoring and comparison with the designed temperature; finally, superheated steam enters from the high-temperature superheater inlet header, absorbs heat through the high-temperature superheater, flows through the high-temperature superheater outlet header and then enters the high-pressure cylinder to do work.
The method is further improved in that the method controls the heat absorption capacity of different positions of the heating surface in a partitioning manner, so that the effects of accurately adjusting the temperature of the superheated steam and reducing the use amount of the desuperheating water are achieved.
The invention has at least the following beneficial technical effects:
the system and the method for regulating the temperature of the superheated steam by the desuperheating water of the coal-fired power generation boiler have the advantages that during specific operation, the low-temperature superheater, the platen superheater and the corresponding outlet header thereof are subjected to regional accurate monitoring control, the heat absorption capacity condition of each heating surface is monitored in real time through the working medium temperature measuring point of each heating surface outlet header, and the desuperheating water regulating valve of the superheater correspondingly connected with a pipeline is regulated, so that the use of the desuperheating water quantity is accurately controlled. The system method realizes real-time monitoring and judgment of the superheated steam parameters, and quickly and reasonably adjusts the heat absorption capacity of the working medium on each heating surface, thereby effectively avoiding the adjustment method of simply and extensively putting the desuperheating water into the superheater during overtemperature, effectively reducing the use amount and frequency of the desuperheating water, and improving the flexibility and economy of superheated steam temperature adjustment.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Description of reference numerals:
1 is low temperature over heater entry header, 2 is low temperature over heater, 3 is low temperature over heater export header, 4 is platen over heater entry header, 5 is platen over heater, 6 is platen over heater export header, 7 is high temperature over heater entry header, 8 is high temperature over heater, 9 is high temperature over heater export header, 10 is the steam turbine high pressure jar, 11 is over heater one-level desuperheating water governing valve, 12 is over heater second grade desuperheating water governing valve.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the reheated steam parameter adjusting system of the coal-fired power generating unit comprises a low-temperature superheater inlet header 1, a low-temperature superheater 2, a low-temperature superheater outlet header 3, a platen superheater inlet header 4, a platen superheater 5, a platen superheater outlet header 6, a high-temperature superheater inlet header 7, a high-temperature superheater 8, a high-temperature superheater outlet header 9, a steam turbine high-pressure cylinder 10, a superheater primary desuperheating water adjusting valve 11 and a superheater secondary desuperheating water adjusting valve 12.
Superheated steam sequentially passes through a low-temperature superheater inlet header 1, a low-temperature superheater 2, a low-temperature superheater outlet header 3, a platen superheater inlet header 4, a platen superheater 5, a platen superheater outlet header 6, a high-temperature superheater inlet header 7, a high-temperature superheater 8, a high-temperature superheater outlet header 9 and a steam turbine high-pressure cylinder 10 along the flowing direction. Wherein, the low-temperature overheaters 2 and the corresponding low-temperature overheater outlet header 3 are uniformly arranged along the width direction of the boiler, and four groups are arranged in total; the platen superheaters 4 and the corresponding platen superheater outlet headers 5 are uniformly arranged along the width direction of the boiler, and four groups are arranged in total. A pipeline between the low-temperature superheater outlet header 3 and the platen superheater inlet header 4 is provided with superheater primary desuperheating water 11, and a pipeline between the platen superheater outlet header 6 and the high-temperature superheater inlet header 7 is provided with superheater secondary desuperheating water 12.
The method for adjusting the superheated steam parameters of the coal-fired generator set comprises the following steps of:
before entering a high-pressure cylinder of a steam turbine to do work, superheated steam of the boiler sequentially passes through a low-temperature superheater 2, a platen superheater 5 and a high-temperature superheater 8. Superheated steam firstly enters from a low-temperature superheater inlet header 1, and then enters into a low-temperature superheater outlet header 3 after the heat absorption of the low-temperature superheater 2, the low-temperature superheater 2 is arranged along the width direction of the boiler and is uniformly divided into four groups, each group is correspondingly connected with the low-temperature superheater outlet header 3, a temperature measuring point is arranged at the outlet header of the low-temperature superheater, the temperature is accurately regulated by a superheater one-level desuperheating water regulating valve 11 on a superheated steam connecting pipeline through real-time temperature monitoring and design temperature comparison. Next, superheated steam enters from a platen superheater inlet header 4, and after the superheated steam passes through the heat absorption effect of a platen superheater 5, the superheated steam reaches a platen superheater outlet header 6, the platen superheater 5 is arranged along the width direction of the boiler and is uniformly divided into four groups, each group is correspondingly connected with the platen superheater outlet header 6, a temperature measuring point is arranged on the platen superheater outlet header, and the temperature is accurately adjusted by a superheater secondary desuperheating water adjusting valve 12 on a superheated steam connecting pipeline through real-time temperature monitoring and comparison with the designed temperature. Finally, superheated steam enters from the high-temperature superheater inlet header 7, absorbs heat through the high-temperature superheater 8, flows through the high-temperature superheater outlet header 9, and then enters the high-pressure cylinder 10 to do work.
The invention combines the unit equipment and the running condition of the coal-fired power plant, monitors and judges the heat absorption capacity condition of each heating surface in real time through accurately partitioning the heating surface of the superheater and the corresponding outlet header equipment thereof, accurately sets the superheater desuperheating water regulating valve, and quickly and reasonably regulates the heat absorption capacity of working media in different partitions of each heating surface, thereby effectively avoiding a method of simply and roughly inputting a large amount of desuperheating water when the superheater is over-heated, effectively reducing the use amount and frequency of the desuperheating water, and improving the flexibility and the economy of regulating the temperature of superheated steam.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A system for regulating the temperature of superheated steam by using desuperheating water of a coal-fired boiler is characterized by comprising a low-temperature superheater inlet header (1), a low-temperature superheater (2), a low-temperature superheater outlet header (3), a platen superheater inlet header (4), a platen superheater (5), a platen superheater outlet header (6), a high-temperature superheater inlet header (7), a high-temperature superheater (8), a high-temperature superheater outlet header (9) and a steam turbine high-pressure cylinder (10);
superheated steam enters a low-temperature superheater (2) from a low-temperature superheater inlet header (1) and then enters a low-temperature superheater outlet header (3) after heat absorption, four groups of low-temperature superheater outlet headers (3) are arranged in the width direction of the boiler, and the superheated steam enters a platen superheater inlet header (4) from the low-temperature superheater outlet header (3); superheated steam enters a platen superheater (5) from a platen superheater inlet header (4) and is absorbed by heat and then reaches a platen superheater outlet header (6), four groups of platen superheater outlet headers (6) are arranged along the width direction of the boiler, and the superheated steam enters a high-temperature superheater inlet header (7) from the platen superheater outlet header (6); and then the superheated steam enters the high-temperature superheater (8) from the high-temperature superheater inlet header (7), enters the high-temperature superheater outlet header (9) after the heat absorption effect, and finally enters the steam turbine high-pressure cylinder (10) to do work.
2. The system for regulating the temperature of superheated steam by using attemperation water of a coal-fired boiler as claimed in claim 1, wherein temperature measuring points are arranged on both the low-temperature superheater outlet header (3) and the platen superheater outlet header (6), so that the heat absorption capacity of the corresponding heated surface can be monitored and judged in real time, and the opening degree of an attemperation water regulating valve on a pipeline corresponding to each outlet header can be guided to be regulated, and the temperature of superheated steam can be regulated.
3. The system for regulating the temperature of superheated steam by using water for reducing the temperature of a coal-fired boiler as claimed in claim 1, wherein outlets of the low-temperature superheaters (2) are connected with four groups of low-temperature superheater outlet header tanks (3), and the low-temperature superheater outlet header tanks (3) are uniformly arranged along the width direction of the boiler.
4. The system for regulating the temperature of the superheated steam by the attemperation water of the coal-fired boiler according to claim 3, wherein a pipeline connected with the low-temperature superheater outlet header (3) is provided with a superheater primary attemperation water regulating valve (11) for regulating the temperature of the superheated steam.
5. The system for regulating the temperature of superheated steam by using desuperheating water of a coal-fired boiler as claimed in claim 4, wherein the outlets of the platen superheaters (5) are connected with four groups of platen superheater outlet header tanks (6), and the platen superheater outlet header tanks (6) are uniformly arranged along the width direction of the boiler.
6. The system for regulating the temperature of the superheated steam by the attemperation water of the coal-fired boiler as recited in claim 5, wherein a superheater secondary attemperation water regulating valve (12) is arranged on a pipeline connected with the platen superheater outlet header (6) for regulating the temperature of the superheated steam.
7. A method for adjusting the temperature of superheated steam by attemperation water of a coal-fired boiler, which is based on the system for adjusting the temperature of superheated steam by attemperation water of a coal-fired boiler, according to claim 6, and comprises the following steps:
before entering a high-pressure cylinder of a steam turbine to do work, superheated steam of the boiler sequentially passes through a low-temperature superheater (2), a platen superheater (5) and a high-temperature superheater (8); superheated steam firstly enters from a low-temperature superheater inlet header (1) and is absorbed by heat of a low-temperature superheater (2) to a low-temperature superheater outlet header (3), the low-temperature superheater (2) is arranged along the width direction of the boiler and is uniformly divided into four groups, each group is correspondingly connected with the low-temperature superheater outlet header (3), a temperature measuring point is arranged on the low-temperature superheater outlet header, and the steam temperature is accurately regulated by a superheater primary desuperheating water regulating valve (11) on a superheated steam connecting pipeline through real-time temperature monitoring and comparison with the designed temperature; next, superheated steam enters from an inlet header (4) of the platen superheater and is absorbed by the platen superheater (5) and then flows to an outlet header (6) of the platen superheater, the platen superheater (5) is arranged along the width direction of the boiler and is uniformly divided into four groups, each group is correspondingly connected with the outlet header (6) of the platen superheater, temperature measuring points are arranged on the outlet header of the platen superheater, and the temperature of the steam is accurately regulated by a superheater secondary desuperheating water regulating valve (12) on a superheated steam connecting pipeline through real-time temperature monitoring and comparison with the designed temperature; finally, superheated steam enters from a high-temperature superheater inlet header (7), absorbs heat through a high-temperature superheater (8), flows through a high-temperature superheater outlet header (9), and then enters a high-pressure cylinder (10) to do work.
8. The method for regulating the temperature of the superheated steam by the desuperheating water of the coal-fired boiler as claimed in claim 7, wherein the method controls the heat absorption amount of different positions of the heating surface by zones, thereby achieving the effects of accurately regulating the temperature of the superheated steam and reducing the use amount of the desuperheating water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110802916.9A CN113432113A (en) | 2021-07-15 | 2021-07-15 | System and method for adjusting temperature of superheated steam by using coal-fired boiler desuperheating water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110802916.9A CN113432113A (en) | 2021-07-15 | 2021-07-15 | System and method for adjusting temperature of superheated steam by using coal-fired boiler desuperheating water |
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| JPH0336407A (en) * | 1989-05-17 | 1991-02-18 | Westinghouse Electric Corp <We> | Reheat system and method for improving heat consumption thereof |
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| CN107101194A (en) * | 2017-06-16 | 2017-08-29 | 重庆大学 | Steam Temperature Control of Boilers |
| CN108386829A (en) * | 2018-03-01 | 2018-08-10 | 北京德普新源科技发展有限公司 | A kind of temprature control method of boiler overheating steam, device and system |
| CN108870374A (en) * | 2018-08-14 | 2018-11-23 | 哈尔滨锅炉厂有限责任公司 | A kind of small collection box structure of superheater for waste incinerator |
| CN110805921A (en) * | 2019-11-12 | 2020-02-18 | 哈尔滨锅炉厂有限责任公司 | Flexible frame structure for heat preservation bearing of header and scattered pipe of flue gas heat exchanger |
| CN112377891A (en) * | 2020-11-10 | 2021-02-19 | 西安热工研究院有限公司 | Energy-conserving power plant boiler over heater temperature reduction water system of degree of depth |
| CN112594667A (en) * | 2020-12-30 | 2021-04-02 | 中冶焦耐(大连)工程技术有限公司 | System and method for adjusting reheat steam temperature of high-temperature ultrahigh-pressure reheat dry quenching boiler |
-
2021
- 2021-07-15 CN CN202110802916.9A patent/CN113432113A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0336407A (en) * | 1989-05-17 | 1991-02-18 | Westinghouse Electric Corp <We> | Reheat system and method for improving heat consumption thereof |
| CN105423268A (en) * | 2015-12-03 | 2016-03-23 | 西安热工研究院有限公司 | Three-way power station boiler suitable for 700 DEG C steam parameter |
| CN107101194A (en) * | 2017-06-16 | 2017-08-29 | 重庆大学 | Steam Temperature Control of Boilers |
| CN108386829A (en) * | 2018-03-01 | 2018-08-10 | 北京德普新源科技发展有限公司 | A kind of temprature control method of boiler overheating steam, device and system |
| CN108870374A (en) * | 2018-08-14 | 2018-11-23 | 哈尔滨锅炉厂有限责任公司 | A kind of small collection box structure of superheater for waste incinerator |
| CN110805921A (en) * | 2019-11-12 | 2020-02-18 | 哈尔滨锅炉厂有限责任公司 | Flexible frame structure for heat preservation bearing of header and scattered pipe of flue gas heat exchanger |
| CN112377891A (en) * | 2020-11-10 | 2021-02-19 | 西安热工研究院有限公司 | Energy-conserving power plant boiler over heater temperature reduction water system of degree of depth |
| CN112594667A (en) * | 2020-12-30 | 2021-04-02 | 中冶焦耐(大连)工程技术有限公司 | System and method for adjusting reheat steam temperature of high-temperature ultrahigh-pressure reheat dry quenching boiler |
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