CN110779007A - System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement - Google Patents

System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement Download PDF

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Publication number
CN110779007A
CN110779007A CN201911251493.5A CN201911251493A CN110779007A CN 110779007 A CN110779007 A CN 110779007A CN 201911251493 A CN201911251493 A CN 201911251493A CN 110779007 A CN110779007 A CN 110779007A
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CN
China
Prior art keywords
economizer
low
flue
inlet
bypass
Prior art date
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Pending
Application number
CN201911251493.5A
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Chinese (zh)
Inventor
吴克锋
黄莺
苗闪闪
殷亚宁
王婷
苏宏亮
韩功博
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Harbin Boiler Co Ltd
Guangdong Datang International Leizhou Power Generation Co Ltd
Original Assignee
Harbin Boiler Co Ltd
Guangdong Datang International Leizhou Power Generation Co Ltd
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Application filed by Harbin Boiler Co Ltd, Guangdong Datang International Leizhou Power Generation Co Ltd filed Critical Harbin Boiler Co Ltd
Priority to CN201911251493.5A priority Critical patent/CN110779007A/en
Publication of CN110779007A publication Critical patent/CN110779007A/en
Pending legal-status Critical Current

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    • 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
    • F22D1/003—Feed-water heater systems
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

A system for moving a high-level economizer of a tower furnace to a tail flue and improving energy level utilization and arrangement relates to the field of tower furnaces. The invention solves the problems that the existing tower furnace has higher hearth height, heavy steel structure bearing weight, longer water supply pipe and downcomer pipeline and needs to consume a large amount of manufacturing and installation cost. The flue economizer is arranged in the tail flue, the bypass flue is arranged outside the tail flue, the bypass low-temperature economizer is arranged in the bypass flue, the steam-water separator is arranged outside the tower furnace main body, the lower end of the steam-water separator is connected with the inlet end of the water storage tank through a water connecting pipe, the outlet end of the water storage tank is communicated with the inlet pipeline of a circulating pump of a recirculating pump through a drain pipe, the outlet pipeline of the circulating pump of the recirculating pump is communicated with the main water supply pipeline of an external boiler, and the upper end of the steam-water separator is communicated with the inlet header of a primary superheater of the tower furnace through a steam connecting pipe. The invention is used for reducing the height of the hearth of the tower furnace and shortening the length of the pipeline.

Description

System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement
Technical Field
The invention relates to the field of tower furnaces, in particular to a system for moving a high-level economizer of a tower furnace to a tail flue and improving energy level utilization arrangement.
Background
The heating surface of the existing tower furnace is vertically and upwards arranged, the coal economizer is arranged at the top of the furnace top, compared with a pi-shaped furnace, the height of a hearth of the tower furnace is higher, the steel structure bears heavy weight, the consumption of required steel is more, and the overall weight of the boiler is higher. The coal economizer is arranged at the top of the furnace top, and needs to consume a longer water supply pipe and a longer down pipe. Meanwhile, the flue gas adjusting baffle is arranged above the coal economizer and limited by the flue gas adjusting baffle, and the coal economizers on two sides of the middle partition plate need two groups of inlet collecting boxes and outlet collecting boxes, so that the number of the collecting boxes is large, the space is limited and the cost is high. And the working media at the outlets at the two sides have larger deviation under the influence of the smoke gas amount and the smoke temperature at the two sides of the baffle.
In conclusion, the existing tower furnace has the problems of high furnace height, heavy steel bearing, long water supply pipe and downcomer pipeline and large consumption of manufacturing and installation cost.
Disclosure of Invention
The invention aims to solve the problems that the existing tower furnace has high hearth height, heavy steel structure bearing weight, long water supply pipe and downcomer pipeline and needs to consume a large amount of manufacturing and installing cost, and further provides a system for moving a high-level economizer of the tower furnace to a tail flue and improving energy level utilization and arrangement.
The technical scheme of the invention is as follows:
a system for moving a high-level economizer of a tower furnace to a tail flue and improving energy level utilization and arrangement comprises a tower furnace main body 1, a tail flue 2, a denitration system 3 and an air preheater 4, the high-level flue gas adjusting baffle 5, the water-cooled wall 6, a water-cooled wall inlet header 7 and a water-cooled wall outlet header 8, wherein the tail flue 2 is arranged outside the tower furnace main body 1, the upper port of the tail flue 2 is communicated with the upper part of the tower furnace main body 1, the denitration system 3 and the air preheater 4 are sequentially arranged inside the tail flue 2 from top to bottom, the high-level flue gas adjusting baffle 5 is arranged inside the tower furnace main body 1, the high-level flue gas adjusting baffle 5 is arranged corresponding to the upper port of the tail flue 2, the water-cooled wall 6 is arranged on the inner wall of the tower furnace main body 1, the lower port of the water-cooled wall 6 is communicated with the water-cooled wall inlet header 7, and the upper port of the water-cooled wall 6 is communicated with the water;
the device also comprises a flue coal economizer 9, a coal economizer outlet header 10, a coal economizer inlet header 11, a bypass low-temperature coal economizer 12, a first low-temperature coal economizer inlet header 13, a first low-temperature coal economizer outlet header 14, a first outlet connecting pipe 15, a first inlet connecting pipe 16, a bypass flue 17, a downcomer 18, a steam-water separator 20, a water connecting pipe 21, a water storage tank 22, a drain pipe 23, a recirculation pump 24 and a steam connecting pipe 25, wherein the flue coal economizer 9 is arranged in the tail flue 2, the outlet end of the pipe group of the flue coal economizer 9 is communicated with the coal economizer outlet header 10, the coal economizer outlet header 10 is communicated with the water-cooled wall inlet header 7 through the downcomer 18, the inlet end of the pipe group of the flue coal economizer 9 is communicated with the coal economizer inlet header 11, the bypass flue 17 is arranged outside the tail flue 2, the upper port of the bypass flue 17 is connected with the outlet end of the denitration system 3, the lower port of a bypass flue 17 is connected with the outlet end of an air preheater 4, a bypass low-temperature economizer 12 is arranged inside the bypass flue 17, the first outlet end of a pipe group of the bypass low-temperature economizer 12 is connected with a first low-temperature economizer outlet header 14, the first low-temperature economizer outlet header 14 is communicated with an economizer inlet header 11 through a first outlet connecting pipe 15, the first inlet end of the pipe group of the bypass low-temperature economizer 12 is connected with a first low-temperature economizer inlet header 13, and the first low-temperature economizer inlet header 13 is communicated with an external boiler main water supply pipeline 19 through a first inlet connecting pipe 16;
the steam-water separator 20 is arranged outside the tower type furnace main body 1, the lower end of the steam-water separator 20 is connected with the inlet end of a water storage tank 22 through a water connecting pipe 21, the outlet end of the water storage tank 22 is communicated with a circulating pump inlet pipeline of a recirculating pump 24 through a drain pipe 23, a circulating pump outlet pipeline of the recirculating pump 24 is communicated with an external boiler main water supply pipeline 19, and the upper end of the steam-water separator 20 is communicated with an inlet header of a primary superheater of the tower type furnace through a steam connecting pipe 25.
Further, the system also comprises a second low-temperature economizer inlet header 26 and a second outlet connecting pipe 27, the second outlet end of the pipe group of the bypass low-temperature economizer 12 is connected with the second low-temperature economizer inlet header 26, and the second low-temperature economizer inlet header 26 is communicated with the economizer inlet header 11 through the second outlet connecting pipe 27.
Further, the system also comprises a second low-temperature economizer outlet header 28 and a second inlet connecting pipe 29, the second inlet end of the pipe group of the bypass low-temperature economizer 12 is connected with the second low-temperature economizer outlet header 28, and the second low-temperature economizer outlet header 28 is communicated with the external boiler main water supply pipeline 19 through the second inlet connecting pipe 29.
Further, the system also comprises a plurality of valves and a plurality of pressure gauges, wherein a first outlet connecting pipe 15 between the first low-temperature economizer outlet header 14 and the economizer inlet header 11, a first inlet connecting pipe 16 between the first low-temperature economizer inlet header 13 and the external boiler main water supply pipeline 19, a second outlet connecting pipe 27 between the second low-temperature economizer inlet header 26 and the economizer inlet header 11, and a second inlet connecting pipe 29 between the second low-temperature economizer outlet header 28 and the external boiler main water supply pipeline 19 are respectively provided with a valve and a pressure gauge.
Further, the low-level flue gas adjusting device further comprises a low-level flue gas adjusting baffle 30, the low-level flue gas adjusting baffle 30 is arranged inside the bypass flue 17 on the outlet side of the bypass low-temperature economizer 12, and the low-level flue gas adjusting baffle 30 is connected with the inner wall of the bypass flue 17.
Further, the bypass low-temperature economizer 12 adopts an H-shaped finned tube.
Compared with the prior art, the invention has the following effects:
1. the system for arranging the high-position economizer of the tower furnace to the tail flue transfers the heating surface of the original economizer of the tower furnace to the tail flue without being limited by the high-position flue gas adjusting baffle, effectively reduces the height of a hearth of the tower furnace, shortens a water supply pipe and a down pipe pipeline, reduces the steel structure bearing of a boiler, and greatly reduces the manufacturing, installation and operation costs. The difficulty of unit maintenance is reduced. After the economizer is moved to the tail flue, the limitation of the high-position flue gas adjusting baffle on the economizer outlet working medium is reduced, the flexibility and the operation economy of the high-position flue gas adjusting baffle are improved, the achievement of the steam temperature of the reheater is facilitated, meanwhile, the side deviation of the economizer outlet working medium is reduced, the header arrangement is easier, and the compression cost is lower. The exhaust gas temperature of the boiler can be controlled more flexibly, the exhaust gas temperature is further reduced, the energy level utilization is improved, and the boiler efficiency is improved by adding the bypass low-temperature economizer of the tail flue.
2. The invention is used for reducing the height of the hearth of the tower furnace, shortening the length of the pipeline, additionally arranging the flue gas bypass, adding the flue gas bypass on the tail flue to heat the low-temperature economizer, improving the water supply temperature at the inlet of the high-level economizer, further reducing the smoke exhaust temperature and improving the energy level utilization.
Drawings
FIG. 1 is a schematic structural view of a system for moving a high level economizer to a back pass arrangement of a tower furnace of the present invention;
fig. 2 is a partial enlarged view of fig. 1 at a.
Detailed Description
The first embodiment is as follows: the system for moving the high-level economizer of the tower furnace to the tail flue and improving the energy level utilization arrangement comprises a tower furnace main body 1, the tail flue 2, a denitration system 3, an air preheater 4, a high-level flue gas adjusting baffle 5, a water wall 6, a water wall inlet header 7 and a water wall outlet header 8, wherein the tail flue 2 is arranged outside the tower furnace main body 1, the upper port of the tail flue 2 is communicated with the upper part of the tower furnace main body 1, the denitration system 3 and the air preheater 4 are sequentially arranged inside the tail flue 2 from top to bottom, the high-level flue gas adjusting baffle 5 is arranged inside the tower furnace main body 1, the high-level flue gas adjusting baffle 5 is arranged corresponding to the upper port of the tail flue 2, the water wall 6 is arranged on the inner wall of the tower furnace main body 1, the lower port of the water wall 6 is communicated with the water wall inlet header 7, the upper port of the water-cooled wall 6 is communicated with a water-cooled wall outlet header 8;
the device also comprises a flue coal economizer 9, a coal economizer outlet header 10, a coal economizer inlet header 11, a bypass low-temperature coal economizer 12, a first low-temperature coal economizer inlet header 13, a first low-temperature coal economizer outlet header 14, a first outlet connecting pipe 15, a first inlet connecting pipe 16, a bypass flue 17, a downcomer 18, a steam-water separator 20, a water connecting pipe 21, a water storage tank 22, a drain pipe 23, a recirculation pump 24 and a steam connecting pipe 25, wherein the flue coal economizer 9 is arranged in the tail flue 2, the outlet end of the pipe group of the flue coal economizer 9 is communicated with the coal economizer outlet header 10, the coal economizer outlet header 10 is communicated with the water-cooled wall inlet header 7 through the downcomer 18, the inlet end of the pipe group of the flue coal economizer 9 is communicated with the coal economizer inlet header 11, the bypass flue 17 is arranged outside the tail flue 2, the upper port of the bypass flue 17 is connected with the outlet end of the denitration system 3, the lower port of a bypass flue 17 is connected with the outlet end of an air preheater 4, a bypass low-temperature economizer 12 is arranged inside the bypass flue 17, the first outlet end of a pipe group of the bypass low-temperature economizer 12 is connected with a first low-temperature economizer outlet header 14, the first low-temperature economizer outlet header 14 is communicated with an economizer inlet header 11 through a first outlet connecting pipe 15, the first inlet end of the pipe group of the bypass low-temperature economizer 12 is connected with a first low-temperature economizer inlet header 13, and the first low-temperature economizer inlet header 13 is communicated with an external boiler main water supply pipeline 19 through a first inlet connecting pipe 16;
the steam-water separator 20 is arranged outside the tower type furnace main body 1, the lower end of the steam-water separator 20 is connected with the inlet end of a water storage tank 22 through a water connecting pipe 21, the outlet end of the water storage tank 22 is communicated with a circulating pump inlet pipeline of a recirculating pump 24 through a drain pipe 23, a circulating pump outlet pipeline of the recirculating pump 24 is communicated with an external boiler main water supply pipeline 19, and the upper end of the steam-water separator 20 is communicated with an inlet header of a primary superheater of the tower type furnace through a steam connecting pipe 25.
The connection mode between the tail flue 2 and the tower furnace main body 1 is detachable connection, a flue connecting pipe is arranged on the outer wall of the tower furnace main body 1, and the upper port of the tail flue 2 is sleeved on the flue connecting pipe and locked by the existing locking ring.
The high-level flue gas adjusting baffle 5 of the embodiment is used for adjusting the amount of flue gas on the left and right sides of the middle partition wall.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 and 2, and further includes a second low-temperature economizer inlet header tank 26 and a second outlet connection pipe 27, the second outlet end of the pipe group of the bypass low-temperature economizer 12 is connected to the second low-temperature economizer inlet header tank 26, and the second low-temperature economizer inlet header tank 26 is communicated with the economizer inlet header tank 11 through the second outlet connection pipe 27. So set up, further add second low temperature economizer entry header 26, flow through second low temperature economizer entry header 26 and get into bypass low temperature economizer 12 through second export connecting pipe 27, can reduce the deviation between the screen of working medium side and intertube deviation effectively. Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: referring to fig. 1 and 2, the present embodiment is further provided with a second low-temperature economizer outlet header 28 and a second inlet connection pipe 29, the second inlet end of the pipe group of the bypass low-temperature economizer 12 is connected to the second low-temperature economizer outlet header 28, and the second low-temperature economizer outlet header 28 is communicated with the external boiler main water supply pipe 19 through the second inlet connection pipe 29. So set up, further add second low temperature economizer export collection box 28, flow out from second low temperature economizer export collection box 28, rethread second entry connecting pipe 29 flows through economizer entry collection box 11 and gets into flue economizer 9, can reduce the deviation between the screen of working medium side and intertube deviation effectively. Other compositions and connections are the same as in the first or second embodiments.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 and fig. 2, and further includes a plurality of valves and a plurality of pressure gauges, where a first outlet connection pipe 15 between the first low-temperature economizer outlet header 14 and the economizer inlet header 11, a first inlet connection pipe 16 between the first low-temperature economizer inlet header 13 and the external boiler main water supply pipeline 19, a second outlet connection pipe 27 between the second low-temperature economizer inlet header 26 and the economizer inlet header 11, and a second inlet connection pipe 29 between the second low-temperature economizer outlet header 28 and the external boiler main water supply pipeline 19 are provided with valves and pressure gauges. With the arrangement, when the heat exchangers of the flue economizer 9 and the bypass low-temperature economizer 12 run for a long time and corrosion leakage occurs, the inlet and outlet valves of the first low-temperature economizer outlet header 14, the first low-temperature economizer inlet header 13, the second low-temperature economizer inlet header 26 and the second low-temperature economizer outlet header 28 can be turned off one by one to check leakage; the pressure gauge is used for measuring the pressure value of the position. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the present embodiment is described, and the present embodiment further includes a low-level flue gas adjusting baffle 30, the low-level flue gas adjusting baffle 30 is disposed inside the bypass flue 17 on the outlet side of the bypass low-temperature economizer 12, and the low-level flue gas adjusting baffle 30 is connected to the inner wall of the bypass flue 17. So set up, bypass low temperature economizer 12 outlet side sets up low level flue gas adjusting damper 30, and adjustable air heater 4 side and bypass low temperature economizer 12 flue gas volume proportion control boiler outlet exhaust gas temperature. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
The shape and the installation mode of the low-position flue gas adjusting baffle 30 of the embodiment are the same as those of the high-position flue gas adjusting baffle 5, and the function of adjusting the flue gas quantity proportion of the flue gas adjusting baffle is the same as that of a common flue gas adjusting baffle applied to the existing tower furnace, so that the repeated description is omitted.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1, and the bypass low-temperature economizer 12 of the present embodiment employs an H-shaped finned tube. So set up, realize countercurrent flow heat transfer. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
Principle of operation
The working principle of the invention is explained in connection with fig. 1 and 2: in the starting stage, the steam separated by the steam-water separator 20 is sent to the inlet header of the primary superheater of the tower furnace through the steam connecting pipe 25, the water separated by the steam-water separator 20 enters the water storage tank 22 through the water connecting pipe 21, and is discharged into the circulating pump inlet pipeline of the recirculating pump 24 through the drain pipe 23, and is mixed with the feed water in the main feed water pipeline 19 of the external boiler as the recirculating working medium, and then flows through the first low-temperature economizer inlet header 13 through the first inlet connecting pipe 16 to enter the bypass low-temperature economizer 12, and is heated by the pipe group of the bypass low-temperature economizer 12, the heated working medium flows out from the first low-temperature economizer outlet header 14, then flows through the economizer inlet header 11 through the first outlet connecting pipe 15 to enter the flue economizer 9, and enters the economizer outlet header 10 after being heated by the pipe group of the flue economizer 9, and then enters the water-cooled wall inlet header 7 through the downcomer 18 from the economizer outlet header 10, and then the working medium is heated by the water-cooled wall 6 and enters the steam-water separator 20 through the water-cooled wall outlet header 8 to be recycled.

Claims (6)

1. A system for moving a high-level economizer of a tower furnace to a tail flue and improving energy level utilization and arrangement comprises a tower furnace main body (1), the tail flue (2), a denitration system (3), an air preheater (4), a high-level flue gas adjusting baffle (5), a water-cooled wall (6), a water-cooled wall inlet header (7) and a water-cooled wall outlet header (8), wherein the tail flue (2) is arranged outside the tower furnace main body (1), an upper port of the tail flue (2) is communicated with the upper part of the tower furnace main body (1), the denitration system (3) and the air preheater (4) are sequentially arranged inside the tail flue (2) from top to bottom, the high-level flue gas adjusting baffle (5) is arranged inside the tower furnace main body (1), the high-level flue gas adjusting baffle (5) is arranged corresponding to the upper port of the tail flue (2), the water-cooled wall (6) is arranged on the inner wall of the tower furnace main body (1), the lower port of the water-cooled wall (6) is communicated with a water-cooled wall inlet header (7), and the upper port of the water-cooled wall (6) is communicated with a water-cooled wall outlet header (8);
the method is characterized in that: the coal economizer comprises a flue coal economizer (9), a coal economizer outlet header (10), a coal economizer inlet header (11), a bypass low-temperature coal economizer (12), a first low-temperature coal economizer inlet header (13), a first low-temperature coal economizer outlet header (14), a first outlet connecting pipe (15), a first inlet connecting pipe (16), a bypass flue (17), a downcomer (18), a steam-water separator (20), a water connecting pipe (21), a water storage tank (22), a drain pipe (23), a recirculation pump (24) and a steam connecting pipe (25), wherein the flue coal economizer (9) is arranged in a tail flue (2), the outlet end of the pipe group of the flue coal economizer (9) is communicated with the coal economizer outlet header (10), the coal economizer outlet header (10) is communicated with a water cooling wall inlet header (7) through the downcomer (18), and the inlet end of the flue coal economizer (9) is communicated with the coal economizer inlet header (11), the denitration system comprises a bypass flue (17), an air preheater (4), a bypass low-temperature economizer (12), a bypass low-temperature economizer inlet header (14), a bypass low-temperature economizer outlet header (11), a bypass low-temperature economizer inlet header (13), a bypass flue (17), an upper port of the bypass flue (17) and an outlet end of a denitration system (3) are connected, a lower port of the bypass flue (17) and an outlet end of the air preheater (4) are connected, the bypass low-temperature economizer (12) is arranged inside the bypass flue (17), a first outlet end of a pipe group of the bypass low-temperature economizer (12) is connected with the first low-temperature economizer outlet header (14), the first outlet header (14) is communicated with the economizer inlet header (11) through a first outlet connecting pipe (15), a first inlet end of the pipe group of the bypass low-temperature economizer (12) is connected with the first low-temperature economizer inlet header (13;
the steam-water separator (20) is arranged outside the tower type furnace main body (1), the lower end of the steam-water separator (20) is connected with the inlet end of the water storage tank (22) through a water connecting pipe (21), the outlet end of the water storage tank (22) is communicated with a circulating pump inlet pipeline of a recirculating pump (24) through a drain pipe (23), a circulating pump outlet pipeline of the recirculating pump (24) is communicated with an external boiler main water supply pipeline (19), and the upper end of the steam-water separator (20) is communicated with an inlet header of a primary superheater of the tower type furnace through a steam connecting pipe (25).
2. The system for moving the high-level economizer of a tower furnace to the tail flue and improving the energy level utilization arrangement according to claim 1, wherein: the bypass low-temperature economizer comprises a bypass low-temperature economizer inlet collecting box (12), a first outlet connecting pipe (27), a first low-temperature economizer inlet collecting box (26) and a second low-temperature economizer inlet collecting box (26), wherein the first outlet end of the bypass low-temperature economizer inlet collecting box (26) is connected with the first low-temperature economizer inlet collecting box (11) through the first outlet connecting pipe (27).
3. The system for moving the high-level economizer of a tower furnace to the tail flue and improving the energy level utilization arrangement according to claim 1, wherein: the boiler further comprises a second low-temperature economizer outlet header (28) and a second inlet connecting pipe (29), the second inlet end of the pipe group of the bypass low-temperature economizer (12) is connected with the second low-temperature economizer outlet header (28), and the second low-temperature economizer outlet header (28) is communicated with an external boiler main water supply pipeline (19) through the second inlet connecting pipe (29).
4. A system for moving the high level economizers to the back pass and increasing the energy level utilization arrangement of a tower furnace according to claim 1, 2 or 3, wherein: the system is characterized by further comprising a plurality of valves and a plurality of pressure gauges, wherein a first outlet connecting pipe (15) between a first low-temperature economizer outlet header (14) and an economizer inlet header (11), a first inlet connecting pipe (16) between a first low-temperature economizer inlet header (13) and an external boiler main water supply pipeline (19), a second outlet connecting pipe (27) between a second low-temperature economizer inlet header (26) and the economizer inlet header (11), and a second inlet connecting pipe (29) between the second low-temperature economizer outlet header (28) and the external boiler main water supply pipeline (19) are respectively provided with a valve and a pressure gauge.
5. The system for moving the high-level economizer of a tower furnace to the tail flue and improving the energy level utilization arrangement according to claim 4, wherein: the low-level flue gas adjusting device is characterized by further comprising a low-level flue gas adjusting baffle (30), wherein the low-level flue gas adjusting baffle (30) is arranged inside a bypass flue (17) on the outlet side of the bypass low-temperature economizer (12), and the low-level flue gas adjusting baffle (30) is connected with the inner wall of the bypass flue (17).
6. The system for moving the high-level economizer of a tower furnace to the tail flue and improving the energy level utilization arrangement according to claim 5, wherein: the bypass low-temperature economizer (12) adopts an H-shaped finned tube.
CN201911251493.5A 2019-12-09 2019-12-09 System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement Pending CN110779007A (en)

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CN201911251493.5A CN110779007A (en) 2019-12-09 2019-12-09 System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement

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CN110332514A (en) * 2019-08-22 2019-10-15 哈尔滨锅炉厂有限责任公司 A kind of efficient wide load double reheat tower-type furnace economizer hierarchical arrangement system
CN211260758U (en) * 2019-12-09 2020-08-14 哈尔滨锅炉厂有限责任公司 System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement

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CN102997214A (en) * 2012-12-26 2013-03-27 哈尔滨锅炉厂有限责任公司 1,000MW ultra-supercritical tower type baffle bitangent circular boil and working method
CN103335299A (en) * 2013-04-10 2013-10-02 无锡华光锅炉股份有限公司 Superheater layout structure of blast-furnace gas boiler
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CN109681889A (en) * 2019-01-25 2019-04-26 浙江伟明环保股份有限公司 A kind of garbage burning boiler exhaust gas temperature regulator control system and operation method
CN110145732A (en) * 2019-05-13 2019-08-20 哈尔滨锅炉厂有限责任公司 Large coal powder boiler ultra-low load economizer switches bypath system
CN110332514A (en) * 2019-08-22 2019-10-15 哈尔滨锅炉厂有限责任公司 A kind of efficient wide load double reheat tower-type furnace economizer hierarchical arrangement system
CN211260758U (en) * 2019-12-09 2020-08-14 哈尔滨锅炉厂有限责任公司 System for moving high-level economizer of tower furnace to tail flue and improving energy level utilization arrangement

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