CN113464972A - Multifunctional combined waste heat recovery boiler - Google Patents

Multifunctional combined waste heat recovery boiler Download PDF

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Publication number
CN113464972A
CN113464972A CN202110730259.1A CN202110730259A CN113464972A CN 113464972 A CN113464972 A CN 113464972A CN 202110730259 A CN202110730259 A CN 202110730259A CN 113464972 A CN113464972 A CN 113464972A
Authority
CN
China
Prior art keywords
smoke chamber
heat exchanger
smoke
pipe
evaporator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110730259.1A
Other languages
Chinese (zh)
Inventor
孙正
花志田
朱丽萍
陈小琴
吕学庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Zhengyang Boiler Co ltd
Original Assignee
Jiangsu Zhengyang Boiler Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Zhengyang Boiler Co ltd filed Critical Jiangsu Zhengyang Boiler Co ltd
Priority to CN202110730259.1A priority Critical patent/CN113464972A/en
Publication of CN113464972A publication Critical patent/CN113464972A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • 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
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • 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
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • 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
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a multifunctional combined waste heat recovery boiler, which structurally comprises a heat exchanger, wherein the heat exchanger comprises an upper tube plate and a lower tube plate which are arranged in parallel, a plurality of vertically arranged smoke tubes are arranged between the upper tube plate and the lower tube plate, a water cavity is arranged in the heat exchanger, a steam pocket is arranged above the heat exchanger, the water cavity is communicated with bubbles through a down pipe and a left ascending pipe, an upper smoke chamber and a lower smoke chamber are arranged in the heat exchanger, the heat exchanger is communicated with the lower smoke chamber through the smoke tubes, one side of the lower smoke chamber is externally connected with a smoke inlet communicated with the lower smoke chamber, the upper smoke chamber is arranged between the heat exchanger and the steam pocket, the heat exchanger is communicated with the upper smoke chamber through the smoke tubes, one side of the upper smoke chamber, which is far away from the smoke inlet, is provided with a smoke outlet, the smoke outlet is communicated with the upper smoke chamber, the upper smoke chamber comprises a membrane type water cooling wall, the membrane type water cooling wall comprises an annular upper collecting tank, an annular lower collecting tank and a membrane type water cooling wall convection pipe, the annular lower collection box is connected with the steam drum through a down pipe, and the annular upper collection box is connected with the steam drum through a right ascending pipe.

Description

Multifunctional combined waste heat recovery boiler
Technical Field
The invention relates to a boiler, in particular to a multifunctional combined waste heat recovery boiler for heating a fluid medium by using smoke.
Background
The boiler is used as a heat exchange device for realizing heat conversion. The existing boilers mainly have two types, one is a chemical fuel type boiler, and the other is a waste heat type boiler which recycles heat in industrial flue gas. The waste heat boiler is used as energy-saving and environment-friendly equipment, so that energy can be effectively saved, and the influence of the discharged flue gas on the atmosphere is reduced.
Chinese patent document (publication number: CN 108731020A) discloses a boiler flue gas emission waste heat utilization device, which comprises a boiler body and a flue gas discharge port, wherein the flue gas discharge port is arranged at the top end of the boiler body, the flue gas discharge port is fixedly connected with one end of a first connecting pipe through a first flange plate, the other end of the first connecting pipe is fixedly connected with a unit air inlet of an air source heat pump unit through a second flange plate, a unit air outlet of the air source heat pump unit is fixedly connected with one end of a second connecting pipe through a third flange plate, the other end of the second connecting pipe is fixedly connected with an air inlet connector of a heat exchanger, an air outlet connector of the heat exchanger is fixedly connected with the three phase of the connecting pipe, and a water outlet connector and a water inlet connector are respectively arranged at the left side and the right side of the heat exchanger. The device simple structure absorbs the conversion to the waste heat of high temperature flue gas and uses, has avoided waste heat high temperature heat waste, and its equipment room assembly simple to operate, performance is higher. However, the device only converts the flue gas through one process, and cannot fully absorb the heat energy of the flue gas, so that the flue gas finally discharged into the air still has a part of heat energy, and a part of heat energy is wasted.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multifunctional combined waste heat recovery boiler which can fully utilize the heat energy in the flue gas, thereby reducing the waste of the heat energy.
In order to solve the technical problem, the technical scheme of the invention is as follows:
the utility model provides a many function combination formula waste heat recovery boiler, including the heat exchanger, the steam pocket, the downcomer, left tedge and right tedge, the heat exchanger includes upper tube plate and lower tube plate that two are listed as the setting, be equipped with a plurality of tobacco pipes that are vertical setting between upper tube plate and lower tube plate, be equipped with the water cavity in the heat exchanger, the steam pocket sets up the top at the heat exchanger, the water cavity communicates with each other with the bubble through downcomer and left tedge, the below of heat exchanger is provided with down the smoke chamber, the heat exchanger communicates with each other through tobacco pipe and lower smoke chamber, one side of lower smoke chamber is external to have rather than communicating flue gas import, a serial communication port: the upper smoke chamber is arranged between the heat exchanger and the steam pocket, the heat exchanger is communicated with the upper smoke chamber through a smoke tube, a smoke outlet is formed in one side, away from a smoke inlet, of the upper smoke chamber and communicated with the upper smoke chamber, the upper smoke chamber comprises a membrane water-cooling wall, the membrane water-cooling wall comprises an annular upper collection box, an annular lower collection box and a membrane water-cooling wall convection tube, the annular lower collection box is connected with the steam pocket through a descending tube, and the annular upper collection box is connected with the steam pocket through a right ascending tube.
Furthermore, an evaporator is arranged in the upper smoke chamber, the upper end of the evaporator is connected with an upper evaporator header, the lower end of the evaporator is connected with a lower evaporator header, the lower evaporator header is connected with a down pipe, and the upper evaporator header is connected with an annular upper header through a connecting pipe.
Furthermore, the evaporator comprises a plurality of heat exchange fins which are arranged on the periphery of the down pipe in a radial shape, the down pipe longitudinally penetrates through the upper smoke chamber, one end of the down pipe is connected with the steam pocket, and the other end of the down pipe is inserted into the water cavity of the heat exchanger.
Further, still include the casing, go up smoke chamber, heat exchanger and lower smoke chamber from the top down and set gradually in the casing, go up, lower smoke chamber all is provided with the quick-open inspection door of formula soon, is provided with the heat preservation between heat exchanger and the casing.
Furthermore, a filtering device is arranged between the lower smoke chamber and the heat exchanger, an ash falling device is arranged in the shell and is positioned on the other side of the lower smoke chamber, the ash falling device is connected with the filtering device through a communicating pipe, and an ash falling inspection hole is formed in the surface of the ash falling device.
Furthermore, the steam pocket is transversely arranged above the upper smoke chamber, the top of the steam pocket is fixedly provided with a safety valve, a main steam valve and an auxiliary steam valve, the outer wall of the steam pocket is provided with a pressure gauge, and the side surface of the steam pocket is provided with a water level gauge.
Compared with the prior art, the invention has the technical effects that: the multifunctional combined waste heat recovery boiler has simple structure and small occupied area; the upper smoke chamber is arranged above the heat exchanger, the membrane water-cooled wall and the evaporator in the upper smoke chamber further absorb heat energy of boiler flue gas, the heat energy in the flue gas is fully utilized, and the temperature of the flue gas discharged to the outside can be effectively reduced. Through be provided with filter equipment between smoke chamber and heat exchanger down to the dust drops in the flue gas of being convenient for, the boiler of being convenient for carries out the cleaning to the flue gas, and the dust carrying capacity of discharging in the external flue gas is little, and the exhaust flue gas is little to environmental pollution.
Drawings
Fig. 1 is a schematic view of a multipurpose combined heat recovery boiler.
In the figure, 1, a steam drum; 2. a smoke feeding chamber; 3. a heat exchanger; 4. a lower smoke chamber; 5. a flue gas inlet; 6. a flue gas outlet; 7. a left riser; 8. a right riser; 9. a down pipe; 10. an annular upper header; 11. an annular lower header; 12. an evaporator; 13. an evaporator upper header; 14. an evaporator lower header; 15. a smoke pipe; 16. an upper tube sheet; 17. a lower tube plate; 18. a heat-insulating layer; 19. a filtration device; 20. a dust falling device; 21. a housing.
Detailed Description
As shown in fig. 1, the multifunctional combined waste heat recovery boiler comprises a shell 21, an upper smoke chamber 2, a heat exchanger 3, a lower smoke chamber 4, a left ascending pipe 7, a right ascending pipe 8 and a descending pipe 9, wherein the upper smoke chamber 2, the heat exchanger 3 and the lower smoke chamber 4 are sequentially arranged in the shell 21 from top to bottom, a water cavity is arranged in the heat exchanger 3, the heat exchanger 3 comprises an upper pipe plate 16 and a lower pipe plate 17 which are arranged in parallel, a plurality of vertical smoke pipes 15 are arranged between the upper pipe plate 16 and the lower pipe plate 17, and the smoke pipes 15 are made of stainless steel. An insulating layer 18 is arranged between the heat exchanger 3 and the shell 21, so that heat exchange between the smoke and the outside air is reduced. The steam drum 1 is transversely arranged above the heat exchanger 3, water is stored in the steam drum 1, and a water level meter for controlling the water level is arranged on the steam drum 1 to limit the liquid level in the steam drum 1. The top of the steam pocket 1 is fixedly provided with a safety valve, a main steam valve and an auxiliary steam valve, and the outer wall of the steam pocket 1 is provided with a pressure gauge; the main steam valve is used for transmitting the water vapor in the left ascending pipe and the right ascending pipe, and the auxiliary steam valve is used for assisting the discharge of the water vapor. Water is injected into the water cavity and the steam drum 1, the water cavity is communicated with the steam drum 1 through the left ascending pipe 7 and the descending pipe 9, and the left ascending pipe 7, the descending pipe 9 and the steam drum 1 form a water loop.
In order to further absorb the heat energy in the flue gas, an upper smoke chamber 2 is arranged above the heat exchanger 3, and the heat exchanger 3 is communicated with the upper smoke chamber 2 through a smoke pipe 15. The down pipe 9 longitudinally penetrates the upper smoke chamber 2, one end of the down pipe 9 is connected with the steam drum 1, and the other end is inserted into the water cavity of the heat exchanger 3. The upper smoke chamber 2 comprises a membrane water-cooled wall, the membrane water-cooled wall comprises an annular upper header 10, an annular lower header 11 and a membrane water-cooled wall convection pipe, and the annular upper header 10, the membrane water-cooled wall convection pipe, the annular lower header 11, a downcomer 9, a right riser 8 and the steam pocket 1 form a water loop. And the evaporator 12 is arranged in the upper smoke chamber 2, the evaporator 12 comprises a plurality of heat exchange fins which are radially arranged on the periphery of the descending pipe 9, and the heat exchange fins are directly arranged on the descending pipe 9, so that the manufacturing is simple. The upper end of the evaporator 12 is connected with an upper evaporator header 13, the lower end of the evaporator 12 is connected with a lower evaporator header 14, the lower evaporator header 14 is connected with the downcomer 9, and the upper evaporator header 13 is connected with the annular upper header 10 through a connecting pipe. The evaporator upper header 13, the box evaporator lower header 14, the down comer 9, the connecting pipe, the annular upper header 10, the right riser 8 and the steam drum 1 form a water circuit.
A lower smoke chamber 4 is arranged below the heat exchanger 3, the heat exchanger 3 is communicated with the lower smoke chamber 4 through a smoke pipe 15, one side of the lower smoke chamber 4 is externally connected with a smoke inlet 5 communicated with the lower smoke chamber, one side of the upper smoke chamber 2 far away from the smoke inlet 5 is provided with a smoke outlet 6 communicated with the upper smoke chamber 2, and the upper smoke chamber 4 and the lower smoke chamber 4 are both provided with quick-opening check doors. A filtering device 19 is arranged between the lower smoke chamber 4 and the heat exchanger 3 and used for filtering dust in smoke, an ash falling device 20 is arranged below the heat exchanger 3 in the shell 21, the ash falling device 20 is positioned at the other side of the lower smoke chamber 4, the ash falling device 20 is connected with the filtering device 19 through a communicating pipe, and the ash falling device 20 is used for placing the dust filtered by the filtering device 19. The surface of the ash falling device 20 is provided with an ash falling inspection hole, so that the ash amount in the ash falling device 20 can be inspected from the ash falling inspection hole, and the complete cleaning is ensured.
The working principle is as follows: the steam drum 1 conveys water in the steam drum 1 to a water cavity in the heat exchanger 3, a membrane water wall and an evaporator 12 through the downcomer 9, smoke enters from a smoke inlet 5 of the lower smoke chamber 4, the smoke flows upwards, dust in the smoke is filtered through a filtering device 19 between the heat exchanger 3 and the lower smoke, and the dust falls into an ash falling device 20. The filtered flue gas enters a flue pipe 15 of the heat exchanger 3 to exchange heat energy with water in the water cavity, and the left ascending pipe 7 and the descending pipe 9 form a water loop between the steam pocket 1 and the water cavity, so that cold and hot water flows, and heating is completed. The smoke which finishes heat energy exchange flows upwards through the smoke pipe 15, enters the upper smoke chamber 2, exchanges residual heat energy with the water in the film type cold water wall and the evaporator 12, and then flows out from the smoke outlet 6; a water loop is formed between the membrane water-cooled wall and the steam drum 1 through the right ascending pipe 8 and the descending pipe 9, so that cold water and hot water flow is realized, and heating is completed; meanwhile, a water loop is formed between the evaporator 12 and the steam pocket 1 through the right ascending pipe 8, the annular upper header 10, the descending pipe 9 and the connecting pipe, so that cold water and hot water flow is realized, and heating is finished.

Claims (6)

1. The utility model provides a many function combination formula waste heat recovery boiler, including the heat exchanger, the steam pocket, the downcomer, left tedge and right tedge, the heat exchanger includes upper tube plate and lower tube plate that two are listed as the setting, be equipped with a plurality of tobacco pipes that are vertical setting between upper tube plate and lower tube plate, be equipped with the water cavity in the heat exchanger, the steam pocket sets up the top at the heat exchanger, the water cavity communicates with each other with the bubble through downcomer and left tedge, the below of heat exchanger is provided with down the smoke chamber, the heat exchanger communicates with each other through tobacco pipe and lower smoke chamber, one side of lower smoke chamber is external to have rather than communicating flue gas import, a serial communication port: the upper smoke chamber is arranged between the heat exchanger and the steam pocket, the heat exchanger is communicated with the upper smoke chamber through a smoke tube, a smoke outlet is formed in one side, away from a smoke inlet, of the upper smoke chamber and communicated with the upper smoke chamber, the upper smoke chamber comprises a membrane water-cooling wall, the membrane water-cooling wall comprises an annular upper collection box, an annular lower collection box and a membrane water-cooling wall convection tube, the annular lower collection box is connected with the steam pocket through a descending tube, and the annular upper collection box is connected with the steam pocket through a right ascending tube.
2. A multifunctional combined heat recovery boiler according to claim 1, characterized in that:
an evaporator is arranged in the upper smoke chamber, the upper end of the evaporator is connected with an upper evaporator collecting box, the lower end of the evaporator is connected with a lower evaporator collecting box, the lower evaporator collecting box is connected with a down pipe, and the upper evaporator collecting box is connected with an annular upper collecting box through a connecting pipe.
3. A multifunctional combined heat recovery boiler according to claim 1, characterized in that:
the evaporator comprises a plurality of heat exchange fins which are arranged on the periphery of a down pipe in a radial shape, the down pipe longitudinally penetrates through the upper smoke chamber, one end of the down pipe is connected with the steam drum, and the other end of the down pipe is inserted into a water cavity of the heat exchanger.
4. A multifunctional combined heat recovery boiler according to claim 1, characterized in that: the device is characterized by further comprising a shell, wherein the upper smoke chamber, the heat exchanger and the lower smoke chamber are sequentially arranged in the shell from top to bottom, the upper smoke chamber and the lower smoke chamber are respectively provided with a quick-opening check door, and a heat insulation layer is arranged between the heat exchanger and the shell.
5. A multifunctional combined heat recovery boiler according to claim 1, characterized in that: a filter device is arranged between the lower smoke chamber and the heat exchanger, an ash falling device is arranged in the shell and is positioned on the other side of the lower smoke chamber, the ash falling device is connected with the filter device through a communicating pipe, and an ash falling inspection hole is formed in the surface of the ash falling device.
6. A multifunctional combined heat recovery boiler according to claim 1, characterized in that: the steam pocket is transversely arranged above the upper smoke chamber, the top of the steam pocket is fixedly provided with a safety valve, a main steam valve and an auxiliary steam valve, the outer wall of the steam pocket is provided with a pressure gauge, and the side surface of the steam pocket is provided with a water level gauge.
CN202110730259.1A 2021-06-30 2021-06-30 Multifunctional combined waste heat recovery boiler Pending CN113464972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110730259.1A CN113464972A (en) 2021-06-30 2021-06-30 Multifunctional combined waste heat recovery boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110730259.1A CN113464972A (en) 2021-06-30 2021-06-30 Multifunctional combined waste heat recovery boiler

Publications (1)

Publication Number Publication Date
CN113464972A true CN113464972A (en) 2021-10-01

Family

ID=77874073

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110730259.1A Pending CN113464972A (en) 2021-06-30 2021-06-30 Multifunctional combined waste heat recovery boiler

Country Status (1)

Country Link
CN (1) CN113464972A (en)

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