WO2014040491A1 - Chaudière de type tour dotée d'un réchauffeur primaire et d'un réchauffeur secondaire - Google Patents

Chaudière de type tour dotée d'un réchauffeur primaire et d'un réchauffeur secondaire Download PDF

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Publication number
WO2014040491A1
WO2014040491A1 PCT/CN2013/082333 CN2013082333W WO2014040491A1 WO 2014040491 A1 WO2014040491 A1 WO 2014040491A1 CN 2013082333 W CN2013082333 W CN 2013082333W WO 2014040491 A1 WO2014040491 A1 WO 2014040491A1
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Prior art keywords
reheater
temperature
low
steam
superheater
Prior art date
Application number
PCT/CN2013/082333
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English (en)
Chinese (zh)
Inventor
姚丹花
诸育枫
徐雪元
倪建军
Original Assignee
上海锅炉厂有限公司
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Application filed by 上海锅炉厂有限公司 filed Critical 上海锅炉厂有限公司
Priority to PL409128A priority Critical patent/PL237933B1/pl
Publication of WO2014040491A1 publication Critical patent/WO2014040491A1/fr
Priority to ZA2014/06664A priority patent/ZA201406664B/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
    • F22G1/04—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler by diverting flow or hot flue gases to separate superheaters operating in reheating cycle, e.g. for reheating steam between a high-pressure turbine stage and an intermediate turbine stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/001—Controlling by flue gas dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways

Definitions

  • the invention relates to a boiler having two reheaters for the power industry. Background technique
  • the steam becomes a relatively low pressure after working in the high pressure cylinder of the steam turbine, is discharged by the high pressure cylinder, enters the boiler and is heated in a reheater, and is supplied to the steam turbine for one reheating medium pressure cylinder to be discharged after work, and enters the boiler.
  • the secondary reheater is heated and supplied to the secondary reheating intermediate cylinder and the low pressure cylinder of the steam turbine for work.
  • This thermodynamic cycle with two reheats is more efficient than a reheating thermodynamic cycle.
  • the above boiler with secondary reheat is used in a power plant.
  • the factors affecting the thermal cycle efficiency are mainly the steam pressure, steam temperature and reheating number used for work.
  • the steam temperature of the current reheat unit is generally 600 °C.
  • the temperature of the existing secondary reheat unit superheater and reheater is generally low, not exceeding 580 °C.
  • the present invention proposes a secondary reheat boiler in which both the superheated steam temperature and the reheated steam temperature reach 60 CTC or more.
  • the heat absorption ratio of the primary reheat boiler superheater and reheater is about 80:20.
  • the reheater has a lower heat absorption ratio, and only one reheat outlet temperature reaches 60 CTC or more.
  • the reheater is arranged in a region where the smoke temperature region is from loocrc to 8oo °c, and convection heat is used.
  • the heat absorption ratio of the secondary reheat boiler superheater and the primary reheater and the secondary reheater of the present invention is about 71:17:12.
  • the reheater has a large heat absorption ratio, and the reheating outlet temperature reaches 60 CTC or more.
  • the adjustment of the primary reheat steam temperature generally adopts one of the means of swinging the burner and adjusting the flue gas baffle to satisfy the requirement. How to adjust the steam temperature of the two reheaters is another difficulty due to the presence of two reheaters.
  • the ultra-supercritical boiler or supercritical boiler referred to in the present invention refers to the pressure of the working fluid in the boiler.
  • the working fluid in the boiler is water.
  • the critical pressure of water is: 22.115MPa, 374°C.
  • the critical point of water the working medium pressure in the furnace.
  • Asia For critical boilers more than this pressure is a supercritical boiler.
  • the steam temperature in the furnace is not lower than 593 °C or the steam pressure is not lower than 31 MPa. It is called ultra-supercritical, and ultra-supercritical is also in the supercritical range.
  • the invention has been filed on April 7, 2011 by the applicant.
  • the invention is entitled: A tower-type boiler with flue-divided and adjustable flow rate, application number 201110085966.6.;
  • the invention name applied for on December 21st was 350MW supercritical tower type lignite boiler, application number 201110432324.9.
  • the object of the present invention is to provide a boiler with two reheaters, the outlet temperature of the superheater, the primary reheater and the secondary reheater can reach 600 ° C - 695 ° C, according to the engineering It is desirable that the temperature is preferably 610 ° C - 620 ° C and 630 ° C - 650 ° C.
  • a tower type boiler with two reheaters the boiler is a supercritical boiler, the heating surface of the boiler comprises a heat exchanger, a primary reheater and a secondary reheater; the superheater comprises a low temperature superheater and a high temperature superheater;
  • feed water enters the front and rear flue economizers, and the front and rear flue economizers are arranged in parallel.
  • the economizer outlet water enters the water wall from the lower part of the furnace, the water wall outlet is connected to the separator, and the separator outlet steam Enter the low temperature superheater and the high temperature superheater in turn, and finally enter the steam turbine to do work;
  • the steam of the primary reheater comes from the steam exhaust of the steam turbine. From the low to high flow direction of the steam side, the primary reheater includes a reheating low temperature reheater and a reheating high temperature reheater in sequence; finally, the steam enters the steam turbine. Do work;
  • the steam of the primary reheater becomes the exhaust of the steam turbine after the work of the steam turbine; the steam of the secondary reheater comes from the steam exhaust of the steam turbine, and the temperature from the steam side is viewed from low to high, including secondary reheating and low temperature. Heater, secondary reheating high temperature reheater; finally the steam enters the steam turbine to do work;
  • the primary reheater and the secondary reheater are arranged in parallel in the vertical flue of the furnace.
  • the primary reheating high temperature reheater is divided into a cold section and a hot section
  • the secondary reheating high temperature reheater is divided into a cold section and a hot section
  • the low temperature superheater is viewed from the steam flow direction, including the low temperature superheater suspension inlet pipe, the low temperature superheater vertical section heating surface and the low temperature superheater screen pipe section; 1.
  • the secondary reheating high temperature reheater cold section is arranged in advance, that is, placed under the high temperature superheater, in the area with strong radiation characteristics, absorbing part of the radiant heat, and the second reheating high temperature reheater hot section Arranged above the high temperature superheater;
  • the upper vertical flue of the furnace is arranged in series along the flue gas flow with a low temperature superheater screen pipe section, one and two reheating high temperature reheater cold section, a high temperature superheater, a secondary reheating high temperature reheater hot section, one , secondary reheat low temperature reheater, economizer and low temperature superheater suspension inlet pipe; primary reheater cold section and secondary reheater cold section are arranged in parallel, primary reheater hot section and secondary reheat The hot sections are arranged in parallel, and the primary reheat low temperature reheater and the secondary reheat low temperature reheater are arranged in parallel.
  • the low temperature superheater screen tube section has a large distance between the screen and the screen, and is capable of transmitting heat radiation; the low temperature superheater vertical section heating surface can also be suspended above the economizer and reheater of the low temperature superheater screen tube section. , high temperature superheater;
  • the first and second reheating high temperature reheater cold section is designed as a screen tube type, and some are arranged above the gap between the screen and the screen of the low temperature superheater to receive heat radiation;
  • the first and second reheating high temperature reheater cold section also includes a vertical section heating surface, and the cold section and the hot section are connected by a vertical section heating surface disposed in the vertical flue.
  • the flue gas passage is separated into the front and rear flue by the separated flue partition wall, and the front flue is arranged with a reheating low temperature reheater.
  • the rear flue is arranged with a secondary reheat low temperature reheating and a rear flue economizer; the separated flue partition wall extends to the second flue inlet, and a flue gas block is arranged here
  • the plate is used to adjust the flue gas flow before and after the flue;
  • the separating flue partition wall is composed of a suspended tubular membrane wall which is taken as part of the low temperature superheater from the low temperature superheater inlet header, returned to the low temperature superheater outlet header or returned to the intermediate mixing Container
  • the primary reheater is placed close to the front wall, and the secondary reheater is placed close to the rear wall.
  • the steam temperature of the superheater, the primary reheater and the secondary reheater reaches 600 ° C to 695 ° C ;
  • the percentage of heat absorption of the secondary reheat boiler superheater and the primary reheater and the secondary reheater is, the superheater sucks
  • the heat is 65%_75%
  • the heat absorption of the primary reheater is 15%-25%
  • the heat absorption of the secondary reheater is 10%_15%
  • the sum of the three is 100%.
  • the steam pressure in the superheater is 28 MPa-35 MP a
  • the steam pressure in the secondary reheater is 5 MPa-14 MPa ;
  • the steam pressure in the secondary reheater is 2 MPa _ 5 MPa.
  • the furnace is composed of a membrane water wall, the lower water wall adopts a spiral tube; and the upper water wall adopts a vertical tube arrangement;
  • the feed water After the feed water enters the front and rear flue economizers, it then enters the lower part of the furnace spiral around the pipe ring, enters the intermediate mixing header, the upper vertical pipe screen of the furnace, the separator, the low temperature superheater and the high temperature superheater, and finally the steam enters the high pressure of the turbine.
  • the cylinder works.
  • the superheater steam temperature is controlled by the coal-water ratio adjustment and the two-stage water spray; 1.
  • the secondary reheater steam temperature is synchronously adjusted by the burner swing, and the first and second reheater chambers are adjusted by the flue gas baffle Endothermic balance; a small amount of water spray is placed on the outlet pipe of the low temperature reheater.
  • the present invention places a part of the reheater heating surface in the flue near the furnace portion, thereby absorbing the radiant heat of a part of the furnace, thereby achieving a sufficient temperature rise with a small area.
  • the reheating device has the characteristics of the radiant heating surface, which is also beneficial for ensuring the reheater outlet rated temperature when the load is reduced.
  • the radiant heat is greatly reduced after passing through the heated surface.
  • the reheater In order to make the reheater with two outlet temperatures above 60CTC, it can absorb part of the radiant heat and ensure a high heat transfer temperature difference.
  • the present invention does not employ the commonly used series type, but employs a method in which two reheaters are arranged in parallel.
  • the difference between this secondary reheating scheme and the conventional primary reheating scheme is to increase the steam required to reach 600 °C or more. That is to say, in general, the temperature of the flue gas generated by the combustion of the boiler is constant, and a hot surface with a high temperature is required. Endothermic, how to arrange? Because the heat transfer is to have a certain temperature difference, generally two series of outlet surfaces with an outlet temperature of 60 CTC are placed in series, and the subsequent flue gas temperature is insufficient to heat the third heating surface to 600 ° C. Therefore, the present invention adopts A parallel scheme allows the two heated surfaces to share a relatively high smoke temperature. The purpose of the reheater part is to improve the heat transfer efficiency, and the second is to oscillate the burner. Has a higher sensitivity.
  • the steam temperature of the radiant heat reheater should not be too high, otherwise the metal wall temperature will be high, resulting in no alternative materials.
  • the low temperature superheater there is no safety problem. This is because the superheater has a higher pressure than the reheater, and the steam heat transfer characteristics are better. The steam characteristics determine the same steam temperature. The temperature of the metal tube wall is higher than that of the superheater, so the reheater cannot be blindly advanced.
  • the current high-parameter secondary reheating scheme must accurately calculate the heating surface layout, which not only meets the temperature but also achieves safety and reliability.
  • the temperature regulation characteristics of the reheater are combined by adjusting the excess air ratio and the flue gas baffle adjustment by the oscillating burner.
  • the center of the flame in the furnace is raised or lowered by the oscillation of the burner, and the outlet temperature of the reheater having the radiation characteristics is thus increased or decreased. Since the two reheaters are arranged in parallel and in the same smoke temperature region, their trends are the same. Increasing the excess air ratio increases the flow rate of the flue gas passing through the heated surface, and also has the effect of increasing the heat exchange of the reheater.
  • the upper flue is divided into two flue front and rear flue by the partition wall of the suspended membrane wall, and the low temperature section of the primary reheater and the low temperature section of the secondary reheater are arranged in the two flues respectively, the hanging duct membrane
  • the wall is drawn from the low temperature superheater inlet header, back to the low temperature superheater outlet header or back to the intermediate mixing header.
  • the middle partition wall extends all the way to the tail flue inlet, where two flue gas flow regulating baffles are placed.
  • the purpose is to control the flue gas flow of the two flue gases before and after by adjusting the opening degree of the baffle to achieve the purpose of adjusting the steam temperature rise of the first and second low temperature reheaters in the two flue gases before and after.
  • the temperature rise of the reheating low temperature section is increased, the temperature rise of the secondary reheating low temperature section is lowered, and vice versa.
  • the excess air ratio and adjusting the flue gas baffle it is ensured that the two reheaters reach the rated temperature at low load or fuel change.
  • the primary reheater is arranged near the front wall, and the secondary reheater is arranged close to the rear wall. Since the rear wall flue is close to the horizontal flue, the flow rate is faster than the front wall flue, and the steam of the secondary reheater The pressure is lower than the pressure of the primary reheater, and the heat transfer characteristics are worse. Therefore, the secondary reheater is arranged close to the back wall, which is beneficial to heat absorption, so that the primary and secondary reheaters absorb heat.
  • the heat absorption percentage of the secondary reheat boiler superheater and the primary reheater and the secondary reheater of the present invention is that the heat absorption of the superheater is 65%-75%, and the heat absorption of the primary reheater is 15%- 25%, the secondary reheater absorbs 10%-15%, the sum of the three is 100%, the preferred ratio is about 71: 17: 12, each ratio is floating within plus or minus 1 And for 100.
  • the steam pressure in the superheater is 30MP a -35MPa
  • the steam pressure in the primary reheater is 5MPa_13MPa
  • the steam pressure in the secondary reheater is 2MPa_5MPa.
  • the secondary reheater is of the same material and is of high grade stainless steel.
  • the grades are, for example, SA-213TP347HFG, SA-213TP310HcbN, SA-213S304H, SA-335pgl, 15CrMoG, 12CrlMoVG, SA213T12, SA213T23, SA-335T9U SA210C.
  • Figure 1 is a side view of the boiler; the reference numerals indicate: front wall water wall 1, rear wall water wall 2, intermediate mixing box 3, water wall inlet header 4, furnace roof 5, furnace 6, burner 7, Horizontal flue of the second flue, vertical flue of the second flue 9, economizer 10, primary reheat low temperature reheater 11, secondary reheat low temperature reheater 12, reheating and high temperature reheating Heat section 13, primary reheating high temperature reheater cold section 14, low temperature superheater screen section 15, low temperature superheater vertical section heating surface 16, lower part of partition (without fins) 17, partition wall with fins 18 , separator 19, low temperature superheater inlet header 20, flue gas baffle 21, low temperature superheater suspension inlet pipe 22, upper suspension pipe 23, low temperature superheater outlet header 24, vertical section heating surface 25, coal saving
  • the boiler comprises a furnace 6, the first flue is the vertical flue 32 of the furnace, the upper flute is divided into a split flue and a main flue, and the partition of the flue is divided by a fin.
  • the first flue is the vertical flue 32 of the furnace
  • the upper flute is divided into a split flue and a main flue
  • the partition of the flue is divided by a fin.
  • the second flue is divided into a horizontal flue 8 and a vertical flue 9.
  • the boiler is, for example, a boiler that uses pulverized coal.
  • the high temperature gas from the plurality of burners 7 in the lower portion of the furnace 6 passes through the furnace 6, enters the first flue 32 in the vertical direction, then enters the horizontal flue 8 of the second flue, and then enters the vertical flue 9 of the second flue. .
  • the upper vertical flue of the furnace is arranged in series along the flue gas flow with a low temperature screen superheater, a secondary reheating high temperature reheater cold section, a high temperature superheater, a secondary reheating high temperature reheater hot section and a Second reheat Low temperature reheater, front and rear wall economizer, low temperature superheater suspension inlet pipe; primary reheater cold section and secondary reheater cold section parallel arrangement, primary reheater hot section and secondary reheater hot section Parallel arrangement, one reheat low temperature reheater and two reheat low temperature reheaters are arranged in parallel.
  • the upper suspension pipe 23 is a non-circulating medium for suspending the low temperature superheater to suspend the inlet pipe 22.
  • the boiler is a 1000MW class coal-fired steam turbine generator set, a super-supercritical parameter variable-pressure operation spiral tube ring DC furnace, a single furnace, a secondary intermediate reheat, a tangential combustion method, a balanced ventilation, and a solid-state discharge. Slag, all-steel suspension tower boiler, open-air coal-fired boiler.
  • the main steam system flow is: After the feed water enters the economizer inlet header 26, it enters the front and rear flue economizers 10, and the front and rear flue economizers are arranged in parallel, and the water is saved in the coal. After heating, the device enters the economizer outlet header 27, and the water in the economizer outlet header is merged by the lower water wall inlet header 4 of the furnace, and then enters the front and rear water wall 1, 2, and is heated in the water wall to enter the water wall.
  • the outlet header 28, the water wall outlet header is connected to the steam separator 19, and the separator outlet steam sequentially enters the low temperature superheater 15 and the high temperature superheater 31, and finally enters the steam turbine to perform work.
  • Six steam separators are arranged vertically in the width direction of the boiler front, and the inlet and outlet are respectively connected with the water wall and the low temperature superheater.
  • the saturated water After entering the first-stage superheater, the saturated water passes through one connecting pipe under the barrel of each separator and enters the lower one of the storage tanks, and the water tank is provided with water level control.
  • a drain pipe below the storage tank leads to a connection piece. The connection is made hydrophobic to the recirculation system and the other to the atmospheric expansion vessel.
  • the furnace is composed of a membrane wall, and the water wall is arranged by a spiral tube and a vertical tube. From the inlet of the furnace ash hopper to the end of the high temperature superheater, a spiral pipe ring is used around the furnace; above the end of the high temperature superheater is a vertical pipe ring.
  • the superheater steam temperature is controlled by the coal-to-water ratio adjustment and two-stage water spray.
  • the steam temperature of the first and second reheaters is synchronously adjusted by the burner swing, and the heat absorption balance between the first and second reheaters is adjusted by the flue gas baffle. A small amount of water spray is set on the outlet pipe of the low temperature reheater. Key technology of the invention 1. Heating surface layout
  • the secondary reheat boiler adds a set of high temperature heating surfaces compared with the primary reheat boiler, and has a high temperature superheater, a reheating high temperature reheater and a secondary reheating high temperature reheater, and the heat absorption ratio of the reheater Significantly increased, so in the design, it is necessary to consider the reasonable matching of the heating surface to meet the change of the heat absorption of the superheated steam and the reheated steam, and at the same time meet the safety requirements brought by the increase of the reheat steam outlet temperature.
  • the heat-receiving surfaces of each stage are arranged in series, which will result in a high-temperature heating surface that cannot obtain sufficient heat exchange temperature and pressure, so that a large number of inefficient heat exchange areas need to be arranged. Therefore, in the design of the secondary reheat heating surface, the partial reheater is boldly advanced, absorbing part of the radiant heat, and the two high reheating surfaces are arranged in parallel to achieve the best heat exchange, economy and safety. balance.
  • the low-temperature superheater blocks part of the heat radiation before the cold section of the reheating reheater, the low-temperature superheater is designed as a screen-type superheater, and the distance between the screen and the screen is large, and the distance is about Yes
  • the secondary reheating high-temperature reheater cold section is designed as a screen tube type, partially arranged above the neutral position between the screen and the screen of the low-temperature superheater, capable of receiving heat radiation, where the temperature is also higher, exceeding 100 CTC.
  • the secondary reheat high temperature reheater cold section also includes vertical section heating surface (25), vertical section heating surface (25) and The secondary reheating high temperature reheater is connected to the hot section, and the vertical section heating surface (25) is disposed in the furnace, preferably in the middle of the furnace, and most preferably on both sides of the partition wall 17 without fins.
  • the low-temperature superheater also includes a vertical section heating surface 16, and the vertical section heating surface 16 can also suspend the low-temperature superheater tube screen.
  • the economizer, reheater, high temperature superheater, etc. above the section serve as the suspension point for these heating surfaces.
  • the low temperature reheater and the reheating high temperature reheater cold section are connected through a header outside the furnace. More specifically, the low temperature reheater outlet header is connected to the reheating high temperature reheater cold section inlet header through the pipeline.
  • the temperature level of the primary steam is higher than the temperature level of the secondary steam, and the temperature level of the secondary steam is higher than the temperature level of the tertiary steam.
  • the reheat steam temperature adjustment mode swing burner + flue gas baffle + water spray desuperheating.
  • the burner design can swing up and down, adjust the height of the combustion center by the swing of the burner, change the temperature of the flue gas at the outlet of the furnace through the adjustment of the combustion center, and affect the high temperature reheat.
  • the heat absorbed by the device regulates the reheat steam outlet temperature. Since a part of the second high is set a part of the heating surface that absorbs the radiant heat, the change of the flame center has a significant influence on the reheat steam temperature, which can ensure that the primary reheater reaches the rated steam temperature within a large load range.
  • the flue gas baffle temperature adjustment mode is adopted, the flue gas share in the front and rear separated flue is controlled by the baffle opening degree, and the heat absorption distribution ratio between the primary and secondary reheaters is changed to adjust the secondary reheater outlet temperature.
  • the purpose of balance At the same time, the water spray is desuperheated on the pipe of the reheater to prevent the occurrence of over-temperature and effectively control the deviation of the steam temperature on the left and right sides.
  • the steam inlet and outlet temperatures of the secondary reheat steam are relatively close.
  • the ratio of the area of the heated surface of the secondary reheater to the ratio of the first and second reheating heat is basically the same. Therefore, the secondary reheater in the form of parallel arrangement of the heating surface can ensure that the trend of the heat absorption of the two reheaters changes with load is basically the same.
  • the primary reheater is equipped with a part of the radiant heating surface, so that the boiler has the characteristics of a good reheat steam temperature at a lower load.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Chimneys And Flues (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

La présente invention a trait à une chaudière de type tour doté d'un réchauffeur primaire et d'un réchauffeur secondaire. Un surchauffeur de la chaudière comprend un surchauffeur à basse température et un surchauffeur à haute température (31). Un écoulement de circuit vapeur principal de la chaudière comprend les étapes suivantes : dans un premier temps, de l'eau d'alimentation entre dans un économiseur de charbon de carneau avant et dans un économiseur de charbon de carneau arrière (10) qui sont agencés en parallèle, puis l'eau qui sort des orifices de sortie des économiseurs de charbon (10) entre dans des parois de refroidissement par l'eau (1, 2) depuis la partie inférieure d'un foyer (6), où les orifices de sortie des parois de refroidissement par l'eau (1, 2) sont raccordés à un séparateur (19), et, pour terminer, la vapeur qui sort du séparateur (19) entre dans le surchauffeur à basse température et dans le surchauffeur à haute température (31) successivement. Dans la direction d'écoulement de la vapeur qui va d'une basse température à une haute température du côté de la vapeur, le réchauffeur primaire comprend successivement un réchauffeur à basse température de réchauffage primaire (11) et un réchauffeur à haute température de réchauffage primaire, et le réchauffeur secondaire comprend successivement un réchauffeur à basse température de réchauffage secondaire (12) et un réchauffeur à haute température de réchauffage secondaire. D'autre part, le réchauffeur primaire et le réchauffeur secondaire sont montés en parallèle dans un carneau perpendiculaire.
PCT/CN2013/082333 2012-09-11 2013-08-27 Chaudière de type tour dotée d'un réchauffeur primaire et d'un réchauffeur secondaire WO2014040491A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL409128A PL237933B1 (pl) 2012-09-11 2013-08-27 Kocioł wieżowy wyposażony w główny przegrzewacz międzystopniowy i pomocniczy przegrzewacz międzystopniowy oraz proces zachodzący w kotle wieżowym
ZA2014/06664A ZA201406664B (en) 2012-09-11 2014-09-11 Tower-type boiler with primary reheater and secondary reheater

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210335374.XA CN102889570B (zh) 2012-09-11 2012-09-11 一种具有两次再热器的塔式锅炉
CN201210335374.X 2012-09-11

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WO2014040491A1 true WO2014040491A1 (fr) 2014-03-20

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PCT/CN2013/082333 WO2014040491A1 (fr) 2012-09-11 2013-08-27 Chaudière de type tour dotée d'un réchauffeur primaire et d'un réchauffeur secondaire

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CN (1) CN102889570B (fr)
MY (1) MY176444A (fr)
PL (1) PL237933B1 (fr)
WO (1) WO2014040491A1 (fr)
ZA (1) ZA201406664B (fr)

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CN106594698A (zh) * 2016-12-30 2017-04-26 江苏东九重工股份有限公司 生物质直燃锅炉
CN108131679A (zh) * 2017-12-08 2018-06-08 中国联合工程有限公司 一种锅炉尾部装置的scr脱硝结构及其运行方法
CN108410514A (zh) * 2018-04-03 2018-08-17 山西阳煤化工机械（集团）有限公司 气化炉膜式水冷壁双集箱
CN109084320A (zh) * 2018-08-01 2018-12-25 中国电建集团江西省电力设计院有限公司 基于旁路换热器的烟气再循环系统
CN109519910A (zh) * 2017-09-19 2019-03-26 焦武军 一种分区精准传热的节能型快组装锅炉
CN110080848A (zh) * 2019-05-08 2019-08-02 上海发电设备成套设计研究院有限责任公司 一种超临界二氧化碳循环燃煤发电系统
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CN110220180B (zh) * 2019-04-30 2024-02-06 中国能源建设集团湖南省电力设计院有限公司 一种可使用低热值燃料的流化床锅炉
CN110080848A (zh) * 2019-05-08 2019-08-02 上海发电设备成套设计研究院有限责任公司 一种超临界二氧化碳循环燃煤发电系统
CN110080848B (zh) * 2019-05-08 2024-02-02 上海发电设备成套设计研究院有限责任公司 一种超临界二氧化碳循环燃煤发电系统
CN110260294A (zh) * 2019-07-19 2019-09-20 辛亮 锅炉本体高温废水余热在线回收利用系统
CN110454761A (zh) * 2019-09-04 2019-11-15 上海锅炉厂有限公司 一种高效的超临界二氧化碳锅炉工质温度调节系统和方法
CN112910017A (zh) * 2021-01-21 2021-06-04 国网山东省电力公司电力科学研究院 一种电网大功率缺口下提高超超临界二次再热机组一次调频能力的方法
CN113914950B (zh) * 2021-10-13 2023-04-28 西安热工研究院有限公司 一种超超临界二次再热多抽汽机组及热电解耦控制方法
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