CN111550758A - High-capacity high-parameter waste incineration waste heat boiler - Google Patents

High-capacity high-parameter waste incineration waste heat boiler Download PDF

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Publication number
CN111550758A
CN111550758A CN202010307410.6A CN202010307410A CN111550758A CN 111550758 A CN111550758 A CN 111550758A CN 202010307410 A CN202010307410 A CN 202010307410A CN 111550758 A CN111550758 A CN 111550758A
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CN
China
Prior art keywords
temperature superheater
incinerator
steam
low
heat boiler
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
CN202010307410.6A
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Chinese (zh)
Inventor
陈晗霞
雷明
边际
邹嵘
刘苏蒙
陈玉村
李靖涛
胡志强
裴江
桂良昭
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.)
Jianglian Heavy Industry Group Co ltd
Original Assignee
Jianglian Heavy Industry Group 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 Jianglian Heavy Industry Group Co ltd filed Critical Jianglian Heavy Industry Group Co ltd
Priority to CN202010307410.6A priority Critical patent/CN111550758A/en
Publication of CN111550758A publication Critical patent/CN111550758A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • 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
    • F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • 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
    • F23L15/02—Arrangements of regenerators
    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)

Abstract

The invention discloses a high-capacity high-parameter waste incineration waste heat boiler which comprises an incinerator, an external air heater preheating system, a hearth, a horizontal flue, an evaporator, a superheating system, a steering chamber and a bidirectional water supply heating economizer, wherein the incinerator is arranged on the hearth; the external air preheater preheating system introduces secondary steam of the flash tank and extracted steam of the steam turbine into the low-pressure section pipe group, introduces extracted steam of saturated steam of the drum into the high-pressure section pipe group, and preheats primary air to enter the bottom of a grate of the incinerator and send the preheated primary air into the incinerator or preheats secondary air to enter the upper part of the incinerator to play a role in disturbing combustion smoke; the evaporator is arranged at an inlet of the horizontal flue, and the horizontal flue is communicated with the economizer for bidirectional water supply heating through the steering chamber. The invention can inhibit the generation of dioxin and nitrogen oxide in the furnace, optimizes the flow field, effectively controls the high-temperature corrosion of the superheater and the low-temperature corrosion of the economizer, improves the heat exchange efficiency, reduces the operation cost and has good environmental protection performance.

Description

High-capacity high-parameter waste incineration waste heat boiler
Technical Field
The invention relates to the technical field of boilers, in particular to a high-capacity high-parameter waste incineration waste heat boiler.
Background
With the development of the waste incineration waste heat boiler towards high capacity and high parameter, the superheater has serious high temperature corrosion problem, while the economizer has low exhaust gas temperature and can generate low temperature corrosion at low load, and the large capacity and high parameter waste incineration waste heat boiler has the problems of large span, difficult arrangement of multiple heating surfaces, uneven combustion and flow field and the like on the structure.
Disclosure of Invention
The invention aims to solve the problems that: the high-capacity high-parameter waste incineration waste heat boiler can inhibit generation of dioxin and nitrogen oxides in the boiler, optimizes a flow field, effectively controls high-temperature corrosion of a superheater and low-temperature corrosion of an economizer, improves heat exchange efficiency, reduces operation cost and has good environmental protection performance.
The technical scheme provided by the invention for solving the problems is as follows: a high-capacity high-parameter waste incineration waste heat boiler comprises an incinerator, an external empty device preheating system, a hearth, a horizontal flue, an evaporator, a superheating system, a steering chamber and a bidirectional water supply heating economizer; the external air preheater preheating system introduces secondary steam of the flash tank and extracted steam of the steam turbine into the low-pressure section pipe group, introduces extracted steam of saturated steam of the drum into the high-pressure section pipe group, and preheats primary air to enter the bottom of a grate of the incinerator and send the preheated primary air into the incinerator or preheats secondary air to enter the upper part of the incinerator to play a role in disturbing combustion smoke; the evaporator is arranged at an inlet of the horizontal flue, and the horizontal flue is communicated with the economizer for bidirectional water supply heating through the steering chamber.
Preferably, the hearth is a hearth with a flue, two flues and three flues separated.
Preferably, a middle suspension pipe is arranged in the horizontal flue.
Preferably, the superheating system comprises a front low-temperature superheater, a high-temperature superheater, a middle-temperature superheater and a low-temperature superheater which are sequentially communicated; a steam collection box is arranged between the front low-temperature superheater and the high-temperature superheater, a primary desuperheater is arranged between the low-temperature superheater and the middle-temperature superheater, and a secondary desuperheater is arranged between the high-temperature superheater and the middle-temperature superheater.
Preferably, the medium-temperature superheater and the low-temperature superheater are both arranged in sequence in a forward and reverse flow manner; the high-temperature superheater is arranged in a forward-flow and forward-flow manner.
Compared with the prior art, the invention has the advantages that: the boiler is suitable for a large-capacity high-parameter waste incineration boiler, can inhibit the generation of dioxin and nitrogen oxides in the boiler, optimizes a flow field, effectively controls the high-temperature corrosion of a superheater and the low-temperature corrosion of an economizer, improves the heat exchange efficiency, reduces the operation cost and has good environmental protection performance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the superheating system of the present invention;
the attached drawings are marked as follows: 1. the system comprises an incinerator, 2, an external empty device preheating system, 3, a hearth, 4, a horizontal flue, 5, an evaporator, 6, a superheating system, 7, a turning chamber, 8, a bidirectional water supply heating economizer, 9, a flue, 10, a third flue, 11, a second flue, 12, a front low-temperature superheater, 13, a high-temperature superheater, 14, a middle-temperature superheater, 15, a low-temperature superheater, 16, a second-stage desuperheater, 17, a first-stage desuperheater, 18 and a steam collection box.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.
The specific embodiment of the invention is shown in fig. 1 and fig. 2, and a large-capacity high-parameter waste incineration waste heat boiler comprises an incinerator 1, an external air heater preheating system 2, a hearth 3, a horizontal flue 4, an evaporator 5, a superheating system 6, a steering chamber 7 and a bidirectional water supply heating economizer 8; the external air heater preheating system 2 introduces secondary steam of the flash tank and extraction steam of the steam turbine into the low-pressure section pipe group, introduces extraction steam of saturated steam of the boiler barrel into the high-pressure section pipe group, and preheats primary air to enter the bottom of the fire grate of the incinerator 1 and send the primary air into the incinerator 1, so that domestic garbage is dried, combusted and burned on the fire grate; or preheating secondary air to enter the upper part of the incinerator 1 to disturb and burn smoke, so that combustible matters in the garbage can be burnt more completely; the evaporator 5 is arranged at the inlet of the horizontal flue 4, and the horizontal flue 4 is communicated with a coal economizer 8 for bidirectional water supply heating through a steering chamber 7.
The tail part adopts a bidirectional water supply heating system to adjust the water supply temperature of the economizer, so that the problems that the span of a large-capacity high-parameter waste incineration waste heat boiler is large, the area of the needed economizer is large, the smoke discharge temperature is low, and the economizer can be corroded at low temperature are solved; and considering a subsequent flue gas treatment system of the boiler, the temperature needs to be controlled within a certain range so as to meet the requirement of flue gas deacidification treatment.
As another embodiment of the invention, the furnace 3 adopts a furnace 3 with a flue 9, two flues 11 and three flues 10 separated. The denitration effect of the waste incineration waste heat boiler is improved, the conditions of combustion and uneven flow field are optimized, the heat load of the water cooling wall is reduced, and a water cooling guide plate can be arranged at the bottom of the third flue for further optimizing the flow field.
As another embodiment of the present invention, an intermediate hanging pipe is disposed in the horizontal flue 4. The middle suspension pipe can homogenize the flue gas, improve the rigidity of the horizontal flue and is favorable for fixing the ash hopper under the horizontal flue.
As another embodiment of the present invention, the superheating system 6 includes a pre-low-temperature superheater 12, a high-temperature superheater 13, a medium-temperature superheater 14, and a low-temperature superheater 15, which are sequentially connected; a steam collection box 18 is arranged between the front low-temperature superheater 12 and the high-temperature superheater 13, a primary desuperheater 17 is arranged between the low-temperature superheater 15 and the middle-temperature superheater 14, and a secondary desuperheater 16 is arranged between the high-temperature superheater 13 and the middle-temperature superheater 14. Arrange low temperature over heater in the same direction as arranging, arrange to put in the front of high temperature over heater against the current, control gas temperature, increase heat transfer area, improve heat exchange efficiency, and high temperature over heater is in the same direction as arranging, and the following current is arranged, makes the biggest pipe wall temperature of high temperature over heater keep away from high temperature corrosion aggravation region, has alleviateed the high temperature corrosion of over heater. And a primary desuperheater and a secondary desuperheater are respectively arranged between the primary superheater and the secondary superheater and between the secondary superheater and the tertiary superheater so as to adjust and control the steam temperature of the boiler when the boiler operates within the load range of 60-110%.
As another embodiment of the present invention, the medium-temperature superheater 14 and the low-temperature superheater 15 are both arranged in sequence in a forward and reverse flow manner; the high-temperature superheater 13 is arranged in parallel and in parallel flow.
The invention is realized by that an external air preheater preheating system is used for supporting combustion of the incinerator, so that flue gas generated by combustion sequentially passes through a first flue, a second flue and a third flue of a hearth, enters a horizontal flue with a middle suspension pipe, an evaporator, a superheating system and a steering chamber, passes through a multi-stage bidirectional water-supply heating economizer and then is discharged.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.

Claims (5)

1. The utility model provides a high parameter msw incineration exhaust-heat boiler of large capacity which characterized in that: comprises an incinerator (1), an external empty device preheating system (2), a hearth (3), a horizontal flue (4), an evaporator (5), a superheating system (6), a steering chamber (7) and a coal economizer (8) for bidirectional water supply heating; the external air preheater preheating system (2) introduces secondary steam of the flash tank and extraction steam of a steam turbine into a low-pressure section pipe group, introduces extraction steam of saturated steam of a boiler barrel into a high-pressure section pipe group, preheats primary air into the bottom of a grate of the incinerator (1) and sends the preheated primary air into the incinerator (1), or preheats secondary air into the upper part of the incinerator (1) to disturb and burn smoke; the evaporator (5) is arranged at an inlet of the horizontal flue (4), and the horizontal flue (4) is communicated with a bidirectional water-feeding heating economizer (8) through a steering chamber (7).
2. The high-capacity high-parameter waste incineration waste heat boiler according to claim 1, characterized in that: the hearth (3) adopts a hearth (3) with a split flue (9), two flues (11) and three flues (10).
3. The high-capacity high-parameter waste incineration waste heat boiler according to claim 1, characterized in that: and a middle suspension pipe is arranged in the horizontal flue (4).
4. The high-capacity high-parameter waste incineration waste heat boiler according to claim 1, characterized in that: the overheating system (6) comprises a front low-temperature superheater (12), a high-temperature superheater (13), a middle-temperature superheater (14) and a low-temperature superheater (15) which are sequentially communicated; a steam collection box (18) is arranged between the front low-temperature superheater (12) and the high-temperature superheater (13), a primary desuperheater (17) is arranged between the low-temperature superheater (15) and the middle-temperature superheater (14), and a secondary desuperheater (16) is arranged between the high-temperature superheater (13) and the middle-temperature superheater (14).
5. The high-capacity high-parameter waste incineration waste heat boiler according to claim 4, characterized in that: the medium-temperature superheater (14) and the low-temperature superheater (15) are arranged in sequence in a forward and reverse flow manner; the high-temperature superheater (13) is arranged in parallel and in parallel flow.
CN202010307410.6A 2020-04-17 2020-04-17 High-capacity high-parameter waste incineration waste heat boiler Pending CN111550758A (en)

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CN111550758A true CN111550758A (en) 2020-08-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113566208A (en) * 2021-06-18 2021-10-29 联盛纸业（龙海）有限公司 Method for inhibiting high-temperature corrosion of high-temperature superheater of garbage incinerator and control system
CN114060824A (en) * 2021-10-15 2022-02-18 北京首创环境科技有限公司 Waste incineration waste heat recovery system and waste incineration system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202267067U (en) * 2011-08-04 2012-06-06 无锡华光锅炉股份有限公司 Refuse incineration boiler
CN105465796A (en) * 2015-03-26 2016-04-06 无锡华光锅炉股份有限公司 Waste incineration boiler
CN108679614A (en) * 2018-06-14 2018-10-19 南京凯盛开能环保能源有限公司 A kind of cement kiln synergic processing house refuse electricity generation system and method
WO2019013731A2 (en) * 2017-05-08 2019-01-17 Agema Muhendislik Arastirma Gelistirme Makine Endustriyel Tesisler Sanayi Ve Ticaret Anonim Sirketi Gasification process smokeless combustion, fully automated capacity and efficiency maximization solid fuel burner system
JP2019132438A (en) * 2018-01-29 2019-08-08 Ｊｆｅエンジニアリング株式会社 Drier and drying method of disposable diaper, and fuel production apparatus and fuel production method
CN110220198A (en) * 2018-12-30 2019-09-10 上海康恒环境股份有限公司 A kind of high temperature and pressure waste incineration horizontal boiler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202267067U (en) * 2011-08-04 2012-06-06 无锡华光锅炉股份有限公司 Refuse incineration boiler
CN105465796A (en) * 2015-03-26 2016-04-06 无锡华光锅炉股份有限公司 Waste incineration boiler
WO2019013731A2 (en) * 2017-05-08 2019-01-17 Agema Muhendislik Arastirma Gelistirme Makine Endustriyel Tesisler Sanayi Ve Ticaret Anonim Sirketi Gasification process smokeless combustion, fully automated capacity and efficiency maximization solid fuel burner system
JP2019132438A (en) * 2018-01-29 2019-08-08 Ｊｆｅエンジニアリング株式会社 Drier and drying method of disposable diaper, and fuel production apparatus and fuel production method
CN108679614A (en) * 2018-06-14 2018-10-19 南京凯盛开能环保能源有限公司 A kind of cement kiln synergic processing house refuse electricity generation system and method
CN110220198A (en) * 2018-12-30 2019-09-10 上海康恒环境股份有限公司 A kind of high temperature and pressure waste incineration horizontal boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113566208A (en) * 2021-06-18 2021-10-29 联盛纸业（龙海）有限公司 Method for inhibiting high-temperature corrosion of high-temperature superheater of garbage incinerator and control system
CN114060824A (en) * 2021-10-15 2022-02-18 北京首创环境科技有限公司 Waste incineration waste heat recovery system and waste incineration system

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Application publication date: 20200818