CN102878543A - Once-through waste heat steam boiler system - Google Patents

Once-through waste heat steam boiler system Download PDF

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Publication number
CN102878543A
CN102878543A CN2011101991296A CN201110199129A CN102878543A CN 102878543 A CN102878543 A CN 102878543A CN 2011101991296 A CN2011101991296 A CN 2011101991296A CN 201110199129 A CN201110199129 A CN 201110199129A CN 102878543 A CN102878543 A CN 102878543A
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CN
China
Prior art keywords
boiler
superheater
waste heat
energy
convection
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
CN2011101991296A
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Chinese (zh)
Inventor
赵建峰
顾大弟
盛天瑜
谢理明
吴行跃
董毓梅
李全利
王瑞霞
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.)
Great Shock Boiler Industrial (kunshan) Co Ltd
Original Assignee
Great Shock Boiler Industrial (kunshan) 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 Great Shock Boiler Industrial (kunshan) Co Ltd filed Critical Great Shock Boiler Industrial (kunshan) Co Ltd
Priority to CN2011101991296A priority Critical patent/CN102878543A/en
Publication of CN102878543A publication Critical patent/CN102878543A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a once-through waste heat steam boiler system. A flue interface, a cooling chamber and convection pipes are arranged in a once-through boiler, wherein the convection pipes are arranged around the cooling chamber and form convection sections with flue gas channels in the cooling chamber; each convection section has at least two return strokes; an external flue gas supply pipe is communicated with the flue interface; the flue interface is communicated with the cooling chamber; the last return stroke of each convection section is communicated with the flue gas inlet of a superheater; the flue gas outlet of the superheater is communicated with the flue gas inlet of an economizer; an external water supply pipe is communicated with the water inlet of the economizer; an inlet header and an outlet header are arranged in the once-through boiler; the water outlet of the economizer is communicated with the inlet header; the two ends of each convection pipe are communicated with the inlet head and the outlet header respectively; and the outlet head is communicated with the steam inlet of the superheater. The once-through waste heat steam boiler system implements triple recovery of waste heat by combining the once-through boiler with the superheater and the economizer, can efficiently reduce the exhaust gas temperature, fully utilizes the energy of the waste heat and achieves the aims of energy conservation and emission reduction.

Description

The through-flow waste heat steam boiler system
Technical field
The invention belongs to field of boilers, relate generally to triple residual neat recovering systems of a kind of through-flow boiler associating superheater and energy-saving appliance.
Background technology
Waste heat boiler is a kind of boiler that utilizes waste heat for generating steam, is used for recovery waste heat, has the effect of energy savings, environmental contamination reduction, is that a kind of country that responds calls the facility that carries out energy-saving and emission-reduction.The waste heat boiler form is a lot, but mostly is traditional chimney flue type, as shown in Figure 1, comprise flue adapter A1, upper drum A2, convection tube A3, lower drum A4, coiled pipe energy-saving appliance A5, its structure can reclaim high-temperature flue gas, but not enough be that metal consumption is large, floor space is large.Or be the fume tube type waste heat boiler, as shown in Figure 2, comprise flue adapter B1, drum B2, convection tube B3, coiled pipe energy-saving appliance B4, it is simple in structure, volume is little, but not enough is directly to reclaim high-temperature flue gas, the smoke pipe entrance will install thermal sleeve additional when reclaiming high-temperature residual heat, and it is complicated that boiler is made, and thermal sleeve is bad easily.
Summary of the invention
In order to overcome defects, the invention provides a kind of through-flow waste heat steam boiler system, this through-flow waste heat steam boiler system not only can directly reclaim the high-temperature residual heat flue gas and produce high-grade superheated steam, and compact conformation, occupation of land are little.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of through-flow waste heat steam boiler system, be provided with flue adapter, cooling chamber and convection tube in the through-flow boiler, described convection tube is arranged in around the cooling chamber, described convection tube and exhaust gases passes therebetween consist of convection section, described convection section has at least two backhauls, outside flue gas supply pipe is connected with described flue adapter, described flue adapter is connected with described cooling chamber, last backhaul of described convection section is connected with the gas approach of described superheater, and the exhanst gas outlet of described superheater is connected with the gas approach of described energy-saving appliance; Outside feed pipe is connected with the water inlet of described energy-saving appliance, be provided with import header and outlet header in the through-flow boiler, the delivery port of described energy-saving appliance is connected with described import header, the two ends of described convection tube are connected with described import header and described outlet header respectively, and described outlet header is connected with the steam inlet of described superheater.
High-temperature flue gas (t>1100 ℃) enters cooling chamber by flue adapter, flue gas passes through radiation cooling in cooling chamber, after temperature reduces (about 900 ℃), enter by convection tube and therebetween the convection section that consists of of exhaust gases passes carry out heat convection, then enter superheater, waste heat flue gas after the cooling is further lowered the temperature by energy-saving appliance again, discharges when the waste heat flue gas drops to about 160 ℃; Feedwater enters the import header in the through-flow boiler behind energy-saving appliance heating absorption waste heat, further heating produces saturated vapor and comes together in outlet header in through-flow boiler, and saturated vapor absorbs waste heat generation superheated steam for using hot equipment through superheater after going out through-flow boiler again.Carry out triple waste heat recoveries by through-flow boiler associating superheater and energy-saving appliance in the through-flow waste heat steam boiler system of the present invention, reach the purpose of efficiently utilizing waste heat, can efficiently reduce exhaust gas temperature, take full advantage of the waste heat energy, reach the purpose of energy-saving and emission-reduction.
Further technical scheme of the present invention is:
It is outside that described superheater and described energy-saving appliance are arranged at described through-flow boiler, be communicated with by flue between last backhaul of described convection section and the described superheater gas approach, be communicated with by flue between the exhanst gas outlet of described superheater and the gas approach of described energy-saving appliance, be connected by water inlet pipe between the delivery port of described energy-saving appliance and the described import header, be communicated with by steam pipe between the steam inlet of described outlet header and described superheater.
Described superheater is multiloop superheater.
Described energy-saving appliance is the coiled pipe energy-saving appliance.
Described import header is annular.
The vertical placement of described through-flow boiler, described import header is positioned at the bottom of boiler internal, and described outlet header is positioned at the top of boiler internal, and described flue adapter is positioned at the boiler bottom.The vertical placement of through-flow boiler not only can reduce takes up an area and the minimizing capital expenditure, and is beneficial to exhaust.
Described energy-saving appliance is positioned at described superheater top.
The invention has the beneficial effects as follows: carry out triple waste heat recoveries by through-flow boiler associating superheater and energy-saving appliance in the through-flow waste heat steam boiler system of the present invention, reach the purpose of efficiently utilizing waste heat, can efficiently reduce exhaust gas temperature, take full advantage of the waste heat energy, reach the purpose of energy-saving and emission-reduction; The vertical placement of through-flow boiler not only can reduce takes up an area and the minimizing capital expenditure, and is beneficial to exhaust; Cooling chamber is arranged in the through-flow boiler, can reclaim the high-temperature residual heat flue gas.
Description of drawings
Fig. 1 is traditional flue type waste heat boiler structural representation;
Fig. 2 is conventional smoke pipe type exhaust heat boiler structure schematic diagram;
Fig. 3 is through-flow waste heat steam boiler system structural representation of the present invention.
The specific embodiment
Embodiment: a kind of through-flow waste heat steam boiler system, be provided with flue adapter 1 in the through-flow boiler, cooling chamber 2 and convection tube 3, described convection tube 3 is arranged in around the cooling chamber 2, described convection tube 3 and exhaust gases passes therebetween consist of convection section, described convection section has at least two backhauls, outside flue gas supply pipe is connected with described flue adapter 1, described flue adapter 1 is connected with described cooling chamber 2, last backhaul of described convection section is connected with the gas approach of described superheater 4, and the exhanst gas outlet of described superheater 4 is connected with the gas approach of described energy-saving appliance 5; Outside feed pipe is connected with the water inlet of described energy-saving appliance 5, be provided with import header 6 and outlet header 7 in the through-flow boiler, the delivery port of described energy-saving appliance 5 is connected with described import header 6, the two ends of described convection tube are connected with described import header 6 and described outlet header 7 respectively, and described outlet header 7 is connected with the steam inlet of described superheater 4.
High-temperature flue gas (t>1100 ℃) enters cooling chamber 2 by flue adapter 1, flue gas passes through radiation cooling in cooling chamber 2, after temperature reduces (about 900 ℃), enter by convection tube 3 and therebetween the convection section that consists of of exhaust gases passes carry out heat convection, then enter superheater 4, waste heat flue gas after the cooling is further lowered the temperature by energy-saving appliance 5 again, discharges when the waste heat flue gas drops to about 160 ℃; Feedwater enters the import header 6 in the through-flow boiler behind energy-saving appliance 5 heating absorption waste heats, further heating produces saturated vapor and comes together in outlet header 7 in through-flow boiler, and saturated vapor absorbs waste heat generation superheated steam for using hot equipment through superheater 4 after going out through-flow boiler again.Carry out triple waste heat recoveries by through-flow boiler associating superheater and energy-saving appliance in the through-flow waste heat steam boiler system of the present invention, reach the purpose of efficiently utilizing waste heat, can efficiently reduce exhaust gas temperature, take full advantage of the waste heat energy, reach the purpose of energy-saving and emission-reduction.
It is outside that described superheater 4 and described energy-saving appliance 5 are arranged at described through-flow boiler, be communicated with by flue between last backhaul of described convection section and described superheater 4 gas approach, be communicated with by flue between the gas approach of the exhanst gas outlet of described superheater 4 and described energy-saving appliance 5, be connected by water inlet pipe between the delivery port of described energy-saving appliance 5 and the described import header 6, be communicated with by steam pipe between the steam inlet of described outlet header 7 and described superheater 4.
Described superheater 4 is multiloop superheater.
Described energy-saving appliance 5 is the coiled pipe energy-saving appliance.
Described import header 6 is annular.
The vertical placement of described through-flow boiler, described import header is positioned at the bottom of boiler internal, and described outlet header is positioned at the top of boiler internal, and described flue adapter 1 is positioned at the boiler bottom.The vertical placement of through-flow boiler not only can reduce takes up an area and the minimizing capital expenditure, and is beneficial to exhaust.
Described energy-saving appliance 5 is positioned at described superheater 4 tops.

Claims (7)

1. through-flow waste heat steam boiler system, be provided with flue adapter (1) in the through-flow boiler, cooling chamber (2) and convection tube (3), described convection tube (3) is arranged in cooling chamber (2) all around, described convection tube (3) and exhaust gases passes therebetween consist of convection section, described convection section has at least two backhauls, it is characterized in that: outside flue gas supply pipe is connected with described flue adapter (1), described flue adapter (1) is connected with described cooling chamber (2), last backhaul of described convection section is connected with the gas approach of described superheater (4), and the exhanst gas outlet of described superheater (4) is connected with the gas approach of described energy-saving appliance (5); Outside feed pipe is connected with the water inlet of described energy-saving appliance (5), be provided with import header (6) and outlet header (7) in the through-flow boiler, the delivery port of described energy-saving appliance (5) is connected with described import header (6), the two ends of described convection tube are connected with described import header (6) and described outlet header (7) respectively, and described outlet header (7) is connected with the steam inlet of described superheater (4).
2. through-flow waste heat steam boiler system according to claim 1, it is characterized in that: it is outside that described superheater (4) and described energy-saving appliance (5) are arranged at described through-flow boiler, be communicated with by flue between last backhaul of described convection section and described superheater (4) gas approach, be communicated with by flue between the exhanst gas outlet of described superheater (4) and the gas approach of described energy-saving appliance (5), be connected by water inlet pipe between the delivery port of described energy-saving appliance (5) and the described import header (6), be communicated with by steam pipe between the steam inlet of described outlet header (7) and described superheater (4).
3. through-flow waste heat steam boiler system according to claim 1, it is characterized in that: described superheater (4) is multiloop superheater.
4. through-flow waste heat steam boiler system according to claim 1, it is characterized in that: described energy-saving appliance (5) is the coiled pipe energy-saving appliance.
5. through-flow waste heat steam boiler system according to claim 1 is characterized in that: described import header (6) is annular.
6. through-flow waste heat steam boiler system according to claim 1, it is characterized in that: the vertical placement of described through-flow boiler, described import header is positioned at the bottom of boiler internal, and described outlet header is positioned at the top of boiler internal, and described flue adapter (1) is positioned at the boiler bottom.
7. through-flow waste heat steam boiler system according to claim 6 is characterized in that: described energy-saving appliance (5) is positioned at described superheater (4) top.
CN2011101991296A 2011-07-15 2011-07-15 Once-through waste heat steam boiler system Pending CN102878543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2011101991296A CN102878543A (en) 2011-07-15 2011-07-15 Once-through waste heat steam boiler system

Publications (1)

Publication Number Publication Date
CN102878543A true CN102878543A (en) 2013-01-16

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191222095A (en) * 1912-09-28 1913-09-29 Alexander Wright & Company Ltd Improvements in Apparatus for Heating Water.
GB1151224A (en) * 1965-07-21 1969-05-07 Paxman & Co Ltd Davey Improvements in and relating to Boilers and Hot Water Heaters
CN2292245Y (en) * 1997-06-25 1998-09-23 金牛股份有限公司 External wet back type oil/gas combustion boiler
CN2387389Y (en) * 1999-08-12 2000-07-12 江苏双良锅炉有限公司 Multiple tubulation arranged through-flow boiler
CN1488899A (en) * 2002-10-09 2004-04-14 森 王 Energy-saving environmental-protection watertube boiler
CN2634372Y (en) * 2003-03-19 2004-08-18 上海益格新技术工程有限公司 Cross flow type smoke waste heat boiler
CN201047651Y (en) * 2007-05-30 2008-04-16 江苏双良锅炉有限公司 Self-contained boiler with water pipe with two return-stroke completely membrane type wall structure
CN201059534Y (en) * 2006-11-16 2008-05-14 朱宗林 Boiler for chemical industry producing
CN201437986U (en) * 2009-06-12 2010-04-14 浙江大学 Special waste fluidized bed incinerator
CN201697137U (en) * 2010-03-19 2011-01-05 吴道洪 Waste incineration flue gas waste heat recovery device
CN202177091U (en) * 2011-07-15 2012-03-28 大震锅炉工业(昆山)有限公司 Through-flow waste heat steam boiler system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191222095A (en) * 1912-09-28 1913-09-29 Alexander Wright & Company Ltd Improvements in Apparatus for Heating Water.
GB1151224A (en) * 1965-07-21 1969-05-07 Paxman & Co Ltd Davey Improvements in and relating to Boilers and Hot Water Heaters
CN2292245Y (en) * 1997-06-25 1998-09-23 金牛股份有限公司 External wet back type oil/gas combustion boiler
CN2387389Y (en) * 1999-08-12 2000-07-12 江苏双良锅炉有限公司 Multiple tubulation arranged through-flow boiler
CN1488899A (en) * 2002-10-09 2004-04-14 森 王 Energy-saving environmental-protection watertube boiler
CN2634372Y (en) * 2003-03-19 2004-08-18 上海益格新技术工程有限公司 Cross flow type smoke waste heat boiler
CN201059534Y (en) * 2006-11-16 2008-05-14 朱宗林 Boiler for chemical industry producing
CN201047651Y (en) * 2007-05-30 2008-04-16 江苏双良锅炉有限公司 Self-contained boiler with water pipe with two return-stroke completely membrane type wall structure
CN201437986U (en) * 2009-06-12 2010-04-14 浙江大学 Special waste fluidized bed incinerator
CN201697137U (en) * 2010-03-19 2011-01-05 吴道洪 Waste incineration flue gas waste heat recovery device
CN202177091U (en) * 2011-07-15 2012-03-28 大震锅炉工业(昆山)有限公司 Through-flow waste heat steam boiler system

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Title
叶江明: "《电厂锅炉原理及设备》", 31 August 2004, article "电厂锅炉的作用及设备构成", pages: 2-3 *
罗俊忠: "《最新电气术语》", 28 February 1973, article "贯流锅炉", pages: 15-46 *

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