CN100455948C - Condensation type heat-storage type gas-firing boiler system - Google Patents

Condensation type heat-storage type gas-firing boiler system Download PDF

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Publication number
CN100455948C
CN100455948C CNB2007101181076A CN200710118107A CN100455948C CN 100455948 C CN100455948 C CN 100455948C CN B2007101181076 A CNB2007101181076 A CN B2007101181076A CN 200710118107 A CN200710118107 A CN 200710118107A CN 100455948 C CN100455948 C CN 100455948C
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China
Prior art keywords
boiler
heat exchanger
type
gas
smoke
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Expired - Fee Related
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CNB2007101181076A
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Chinese (zh)
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CN101078564A (en
Inventor
贾力
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Beijing Jiaotong University
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Beijing Jiaotong University
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Publication of CN101078564A publication Critical patent/CN101078564A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention relates to a condensing regenerative burning natural gas boiler system. U-shape combustor is set in the boiler cylinder and two ends of U-shape combustor are connected with regenerative natural gas burner working alternatively symmetrically. Air and smoke are connected with air and burned smoke used in boiler by four-way valve. Combined smoke condensing heat exchanger above the burner is connected with smoke outlets of four-way valve. Sealing drainage pipe for condensing liquid is installed at the bottom of smoke side. By-pass pipe with adjusting valve is connected at the smoke side of combined smoke condensing heat exchanger for adjusting resistance at the smoke side and outlet temperature. Boiler feed water enters into the combined smoke condensing heat exchanger firstly to cool smoke. After feed water is heated, boiler feed water enters into boiler body through the combined smoke condensing heat exchanger. When boiler is in no-water compensation period feed water heated by the smoke condensing heater enters into the boiler water compensation tank directly to heat water feed water, water in feed water tank and other system working fluid for the vaporizing boiler system.

Description

A kind of condensation type heat-storage type gas-firing boiler system
Technical field
The present invention relates to a kind of condensation type heat-storage type gas-firing boiler system, belong to Thermal Equipment, the natural gas boiler field.
Background technology
At present, all kinds of natural gas boilers generally adopt pyrotechnics pipe or water-tube boiler, and metal consumption is big, the exhaust gas temperature height, and natural gas hot water boiler system smoke evacuation commonly used is generally more than 110 ℃, and the steam boiler exhaust gas temperature is generally more than 200 ℃.Because natural gas has higher hydrogen content, contains a large amount of steam in the combustion product.The high low heat valve difference of natural gas is very big.Thereby the high temperature discharge flue gas causes present natural gas boiler not only to consume a large amount of metals, and the thermal efficiency is not high yet.In order effectively to improve the natural gas boiler thermal efficiency, the flue gas heat-energy recovering apparatus has appearred, utilize heat exchanger, adopt cryogenic fluid and flue gas heat exchange, reduce exhaust gas temperature.But the gas industry boiler is generally operation under positive pressure at present, and the allowable pressure drop of smoke evacuation is limited, the back-end surfaces that causes the gas industry boiler can't extensively adopt coal-burning boiler to adopt.The more important thing is that the significant proportion of fume afterheat behind the combustion of natural gas is the steam latent heat of vaporization in the flue gas, its waste heat recovery obviously is different from the fire coal boiler fume waste heat recovery, because only be lower than the latent heat of vaporization in the flue gas that the cryogenic fluid of flue gas dew point temperature just might reclaim natural gas boiler.Middle-size and small-size in addition natural gas boiler adopts the many of horizontal three backhauls, and it is higher to remove fiery cylinder roasting flame temperature, and flue-gas temperature reduces gradually in other two backhauls, causes heat transfer temperature difference to reduce significantly, and metal heated utilization rate original place is in fire tube heating surface.
Summary of the invention
In order to overcome the deficiency of prior art structure, the invention provides a kind of condensation type heat-storage type gas-firing boiler system.A kind of novel natural gas steam generator system that can effectively reduce the natural gas boiler metal consumption and improve boiler thermal output is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Comprise boiler body, U type combustion chamber, heat-storage type burner and assembled smoke gas condensing heat-exchange.Be characterized in: boiler body still is positive displacement cylinder type metal pressurized drum, arrange U type combustion chamber in the drum, U type combustion chamber tube two ends symmetry connects the heat accumulating type neat gas burner, and two heat-storage type burners are communicated with air and burning back flue gas with combustion of natural gas by cross valve; Burner top arrangement combinations formula flue gas condensing heat exchanger, the fume side of assembled smoke gas condensing heat exchanger is connected with air-introduced machine with the cross valve exhaust gases passes respectively, the condensate discharge pipeline of sealing is installed to the condensed water treatment system in assembled smoke gas condensing heat exchanger fume side bottom, and the water wing passage of assembled smoke gas condensing heat exchanger can be respectively links to each other with hot-water heating system with boiler feedwater pipeline, feed-tank or other; Cross valve exhanst gas outlet pipeline removes and is connected with assembled smoke gas condensing heat exchanger fume side, has a band valve branch road (bypass pipe) to stride across the exhanst gas outlet pipeline that the assembled smoke gas condensing heat exchanger is directly connected to the assembled smoke gas condensing heat exchanger simultaneously; The air and flue system of boiler adopts air-introduced machine, and the layout air-introduced machine arranges flue gas to chimney at assembled smoke gas condensing heat exchanger rear portion.
Operation principle of the present invention is such, the heat-storage type burner of two alternations of boiler body is located at the two ends of U type combustion chamber respectively, two heat-storage type burners are connected with the cross valve that is connected air and exhaust gases passes, air at room temperature enters the ceramic heat-storing heat exchanger of regenerative heat-exchange burner by cross valve, in ceramic heat-storing formula heat exchanger, air is heated near the burning indoor temperature, by the eddy flow plate, high temperature air rotates at a high speed to be injected in the combustion chamber, with natural gas mixed combustion, high-speed rotational forms vortex, entrainment smoke backflow, reduce the combustion zone oxygen content, cause low oxygen combustion, reducing nitrogen oxide generates, not clean-burning fuel gas is in the oxidation of rear portion, combustion chamber, form in the combustion chamber and distribute than even temperature, the combustion product flue gas is reduced to flue-gas temperature below 200 ℃ by the ceramic heat-storing heat exchanger of combustion chamber opposite side heat-storage type burner, flue gas is arranged to the assembled smoke gas condensing heat exchanger by cross valve, flue-gas temperature obviously descends, the steam partial condensation that contains in the flue gas, condensation water is discharged to condensate liquid processor or sewerage by the unitized exchanger bottom.Cross valve is by the frequency work of setting, air, flue gas and natural gas system are switched, switch the natural gas supply system simultaneously, stop a side burner, start the opposite side burner, two heat regenerators are added thermal regenerator and add the hot-air heat release by flue gas respectively.Air and flue gas provide dynamic flow by the air-introduced machine at assembled smoke gas condensing heat exchanger rear portion.The fume side of assembled smoke gas condensing heat exchanger has the bypass pipe of band control valve to connect, in order to adjust fume side resistance and outlet temperature.Boiler feedwater at first enters the assembled smoke gas condensing heat exchanger, cooled flue gas, and after feedwater was heated, boiler feedwater entered boiler body by the assembled smoke gas condensing heat exchanger, and water outlet or steam are sent boiler and are given custom system.For guaranteeing safe operation of the boiler,, during boiler is in non-moisturizing, directly enter the boiler replenishing water case by the feedwater after the heating of flue gas condensing heat exchanger for steam boiler system.The assembled smoke gas condensing heat exchanger has multiple compound mode in addition, can not link to each other with the feed water system of boiler, but only is connected with water supply tank, and purpose is a water in the heating water supply tank; The assembled smoke gas condensing heat exchanger can be connected with the system that other need heat in addition; The heating boiler feedwater simultaneously of assembled smoke gas condensing heat exchanger, feed-tank water and other systematic working medium are because the assembled smoke gas condensing heat exchanger can be contacted and in parallel the use.
Beneficial effect of the present invention, the present invention is used for natural gas boiler, comprises hot-water boiler and steam boiler.The assembled smoke gas condensing heat exchanger is installed in the heat-storage type burner top in the steam generator system of the present invention, constitute integration apparatus with boiler body, the present invention adopts integral control system, and burner, cross valve, feedwater and flue gas condensing heat exchanger adopt unified control system.Adopt the present invention, natural gas boiler is made metal consumption and can be reduced more than 20%, and boiler thermal output can be brought up to more than 98%.
Description of drawings
Fig. 1 is a system diagram of the present invention.
Fig. 1 has provided system of the present invention signal, comprises boiler body (1), U type combustion chamber tube (2), heat accumulating type neat gas burner (3), air flue gas cross valve (4), igniter (5), natural gas supply pipe (6), air hose (7), flue (8) and flue gas condensing heat exchanger (9), heat exchanger flue gas bypass pipe (10) and air-introduced machine (11); Also have boiler feed pipe (12), boiler feedwater case (13), condensate discharge pipe (14) and boiler discharging tube or steam outlet pipe (15) in addition.
Below in conjunction with drawings and Examples utility model is further specified.
The specific embodiment
Embodiment 1: as shown in Figure 1,
A kind of condensation type heat-storage type natural gas boiler system mainly comprises boiler body (1), drum, U type combustion chamber tube (2), heat-storage type burner (3) and flue gas condensing heat exchanger (9).Be primarily characterized in that: drum is a cylinder type metal pressure-vessel shell, arranges to be light pipe or bellows structure in U type combustion chamber (2) in drum; U type combustion chamber tube (2) two ends symmetry connects heat accumulating type neat gas burner (3), and two heat accumulating type neat gas burners (3) are communicated with air hose (7) and flue (8) with boiler combustion by metal-air flue gas cross valve (4) passes through burning back flue gas; Heat accumulating type neat gas burner (3) top arrangement combinations formula flue gas condensing heat exchanger (9), the fume side of assembled smoke gas condensing heat exchanger (9) is connected with chimney with metal-air flue gas cross valve (4), flue (8) respectively, the condensate discharge pipeline (14) of sealing is installed in assembled smoke gas condensing heat exchanger (9) fume side bottom, and the water wing passage of assembled smoke gas condensing heat exchanger (9) can be respectively links to each other with hot-water heating system with boiler feedwater pipeline (12), feed-tank (13) or other; Metal-air flue gas cross valve (4) exhanst gas outlet pipeline removes and is connected with assembled smoke gas condensing heat exchanger (9) fume side, has a band valve branch road (bypass pipe) (10) to stride across the exhanst gas outlet pipeline that assembled smoke gas condensing heat exchanger (9) is directly connected to assembled smoke gas condensing heat exchanger (9) simultaneously; The air and flue system of boiler adopts air-introduced machine (11), at assembled smoke gas condensing heat exchanger (9) rear portion layout air-introduced machine (11) flue gas is arranged to chimney.
Igniter (5) is arranged in heat-storage type burner (3) outlet and is used for lighting main flame.
Natural gas supply pipe (6) is connected with heat-storage type burner (3) provides the burning natural gas.
Boiler discharging tube or steam outlet pipe (15) link to each other with boiler body (1) drum.
Embodiment 2:
One or two can be arranged in above-mentioned U type combustion chamber in drum, simultaneously corresponding a pair of or two pairs of heat-storage type burners.Above-mentioned assembled smoke gas condensing heat exchanger heats for boiler feedwater (moisturizing), feed-tank or other with hot system, can heat several systems simultaneously, also can only heat a system.

Claims (7)

1. condensation type heat-storage type natural gas boiler system, comprise boiler body, U type combustion chamber, heat accumulating type neat gas burner and assembled smoke gas condensing heat exchanger, it is characterized in that: boiler body is a positive displacement cylinder type metal pressurized drum, arrange U type combustion chamber in the drum, U type burner ends symmetry connects the heat accumulating type neat gas burner, and two heat accumulating type neat gas burners are communicated with air and burning back flue gas with combustion of natural gas by cross valve; Heat accumulating type neat gas burner top arrangement combinations formula flue gas condensing heat exchanger, the fume side of assembled smoke gas condensing heat exchanger is connected with air-introduced machine with the cross valve exhaust gases passes respectively, the condensate discharge pipeline that sealing is installed in assembled smoke gas condensing heat exchanger fume side bottom is to the condensed water treatment system, and the water wing passage of assembled smoke gas condensing heat exchanger links to each other with hot-water heating system with the feed water system of boiler or other respectively; The cross valve exhaust gases passes removes and is connected with assembled smoke gas condensing heat exchanger fume side, has a band valve branch road to stride across the exhanst gas outlet pipeline that the assembled smoke gas condensing heat exchanger is directly connected to the assembled smoke gas condensing heat exchanger simultaneously; The air and flue system of boiler adopts air-introduced machine, and the layout air-introduced machine arranges flue gas to chimney at assembled smoke gas condensing heat exchanger rear portion.
2. a kind of condensation type heat-storage type natural gas boiler according to claim 1 system, it is characterized in that: the U type combustion chamber of arranging in drum is light pipe or bellows structure.
3. a kind of condensation type heat-storage type natural gas boiler according to claim 1 and 2 system, it is characterized in that: one or two is arranged in described U type combustion chamber in drum, simultaneously corresponding a pair of or two pairs of heat accumulating type neat gas burners.
4. a kind of condensation type heat-storage type natural gas boiler according to claim 3 system, it is characterized in that: described assembled smoke gas condensing heat exchanger heats for boiler feedwater or moisturizing or other with hot-water heating system, heat several systems simultaneously, or only heat a system.
5. a kind of condensation type heat-storage type natural gas boiler according to claim 1 system, it is characterized in that: the assembled smoke gas condensing heat exchanger is made up of the metal fin pipe unit structure of snake type structure, the unit of metal fin pipe unit structure is 1-3, and each unit has independently water inlet pipe and outlet pipe and bottom condensate discharge pipe.
6. a kind of condensation type heat-storage type natural gas boiler according to claim 1 system, it is characterized in that: boiler is hot-water boiler or steam boiler.
7. a kind of condensation type heat-storage type natural gas boiler according to claim 1 system, it is characterized in that: the assembled smoke gas condensing heat exchanger is installed in heat accumulating type neat gas burner top and boiler body constitutes integration apparatus.
CNB2007101181076A 2007-06-28 2007-06-28 Condensation type heat-storage type gas-firing boiler system Expired - Fee Related CN100455948C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486731A (en) * 2013-10-15 2014-01-01 林煜翔 Horizontal type cylinder-shaped condensing type heat exchanger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423870B (en) * 2013-09-02 2016-08-10 洪阳冶化工程科技有限公司 Heat storage type combustion vacuum phase transition heating furnace
CN103471407A (en) * 2013-09-06 2013-12-25 南通曼特威金属材料有限公司 Smelting furnace waste heat recovery system for aluminum ingot production

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273073A (en) * 1978-05-31 1981-06-16 Deborah Fluidised Combustion Limited Circulating fluidized bed boiler
JPH08121703A (en) * 1994-10-24 1996-05-17 Mitsubishi Heavy Ind Ltd Waste heat recovery apparatus
JPH11132435A (en) * 1997-10-30 1999-05-21 Samson Co Ltd Cleaning apparatus for boiler economizer
CN1301941A (en) * 1999-12-29 2001-07-04 上海广安工程应用技术有限公司 Two-purpose heat accumulating gas and electric boiler
JP2005090893A (en) * 2003-09-18 2005-04-07 Ishikawajima Harima Heavy Ind Co Ltd Heat storage type heat exchanger and combustion device such as industrial furnace and pulverized coal burning boiler using it
CN2725716Y (en) * 2004-06-18 2005-09-14 段小刚 Heat accumulation type secondary combustion smokeless atmospheric boiler
CN2847053Y (en) * 2005-08-16 2006-12-13 江苏双良锅炉有限公司 Gas burning boiler for high efficiency burning low heat value gas with built-in heat storage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273073A (en) * 1978-05-31 1981-06-16 Deborah Fluidised Combustion Limited Circulating fluidized bed boiler
JPH08121703A (en) * 1994-10-24 1996-05-17 Mitsubishi Heavy Ind Ltd Waste heat recovery apparatus
JPH11132435A (en) * 1997-10-30 1999-05-21 Samson Co Ltd Cleaning apparatus for boiler economizer
CN1301941A (en) * 1999-12-29 2001-07-04 上海广安工程应用技术有限公司 Two-purpose heat accumulating gas and electric boiler
JP2005090893A (en) * 2003-09-18 2005-04-07 Ishikawajima Harima Heavy Ind Co Ltd Heat storage type heat exchanger and combustion device such as industrial furnace and pulverized coal burning boiler using it
CN2725716Y (en) * 2004-06-18 2005-09-14 段小刚 Heat accumulation type secondary combustion smokeless atmospheric boiler
CN2847053Y (en) * 2005-08-16 2006-12-13 江苏双良锅炉有限公司 Gas burning boiler for high efficiency burning low heat value gas with built-in heat storage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486731A (en) * 2013-10-15 2014-01-01 林煜翔 Horizontal type cylinder-shaped condensing type heat exchanger
CN103486731B (en) * 2013-10-15 2015-08-12 林煜翔 Horizontal cylinder shape condensed heat exchanger

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