CN101451767A - Thermal storage type energy-saving boiler and burning method thereof - Google Patents
Thermal storage type energy-saving boiler and burning method thereof Download PDFInfo
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- CN101451767A CN101451767A CNA2009100765765A CN200910076576A CN101451767A CN 101451767 A CN101451767 A CN 101451767A CN A2009100765765 A CNA2009100765765 A CN A2009100765765A CN 200910076576 A CN200910076576 A CN 200910076576A CN 101451767 A CN101451767 A CN 101451767A
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- combustion
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- combustion air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a heat accumulating type energy-saving boiler and combination method thereof, comprising a furnace body. The furnace body is provided with two or more combustors having a high temperature combustion supporting air inlet, a fuel jet inlet inside, a heat accumulating chamber connected to the high temperature combustion supporting air inlet, a normal temperature combustion supporting air inlet and a low temperature smoke gas outlet, and a reversing device between the normal temperature combustion supporting air inlet and the low temperature smoke gas outlet. When the smoke gas is discharged, the heat accumulating chamber recovers the excess heat to reduce the heat energy loss, improve the combustion efficiency; the normal temperature combustion supporting air is preheated through the heat accumulating chamber for supporting the combustion; a plurality of combustors use periodically reserving combustion to eliminate local high temperature area in the combustion chamber and distribute the temperature in the combustion chamber well, improve the service life of the hearth; and the smoke gas is discharged by a blower to keep the negative pressure in the hearth and make the method safe and reliable. The invention is suitable for various fuel gas boilers.
Description
Technical field
The present invention relates to a kind of hot water or steam raising plant, relate in particular to a kind of thermal storage type energy-saving boiler and combustion method thereof.
Background technology
Boiler is hot water or the steam raising plant of using always, but the general efficiency of combustion of existing boiler is on the low side, fuel cost is higher.
As shown in Figure 1, be the structure principle chart of a kind of boiler of the prior art, the inside of body of heater constitutes the combustion chamber, on the wall of body of heater one side burner is housed; Have hot flue gas passing away on the wall of opposite side.The normal temperature combustion air be blown into by air blast and with fuel mix after, in the combustion chamber internal combustion, the hot flue gas after the burning is discharged the combustion chamber by passing away.
There is following shortcoming at least in above-mentioned prior art:
At first, combustion-supporting by Cryogenic air, the burning indoor temperature is lower, and the combustion chamber temperature skewness, has the localized hyperthermia district, influences the life-span of body of heater; Secondly, exhaust gas temperature is higher, takes away a large amount of heat energy, and efficiency of combustion is lower.
Summary of the invention
The purpose of this invention is to provide uniformity of temperature profile in a kind of ignition temperature height, the combustion chamber, efficiency of combustion height, safe and reliable thermal storage type energy-saving boiler and combustion method thereof.
The objective of the invention is to be achieved through the following technical solutions:
Thermal storage type energy-saving boiler of the present invention, comprise body of heater, described body of heater is provided with two or more burners, described burner is provided with high temperature combustion air inlet, fuel entrance, described high temperature combustion air inlet is connected with regenerator, described regenerator is provided with normal temperature combustion air inlet and low-temperature flue gas outlet, and described low-temperature flue gas outlet is connected with air-introduced machine, and described air-introduced machine makes by bleeding and keeps negative pressure in the burner hearth.
The combustion method of above-mentioned thermal storage type energy-saving boiler of the present invention, in the combustion process, low-temperature flue gas is discharged by induced draft blower withdraws, makes to keep negative pressure in the burner hearth; The normal temperature combustion air enters burner hearth by negative pressure suction in the burner hearth.
As seen from the above technical solution provided by the invention, thermal storage type energy-saving boiler of the present invention and combustion method thereof, because high temperature combustion air inlet is connected with regenerator, regenerator is provided with normal temperature combustion air inlet and low-temperature flue gas outlet, the low-temperature flue gas outlet is connected with air-introduced machine, and air-introduced machine makes by bleeding and keeps negative pressure in the burner hearth.
When flue gas is discharged on the one hand, carry out waste heat recovery, reduced heat-energy losses, improved efficiency of combustion through regenerator; On the other hand, during burner combustion, the normal temperature combustion air is combustion-supporting through participating in after the regenerator preheating, can improve ignition temperature; The third aspect, a plurality of burners can adopt periodically reversing combustion, have eliminated localized hyperthermia district in the combustion chamber, have improved the burner hearth life-span; In addition, low-temperature flue gas is discharged by induced draft blower withdraws, makes to keep negative pressure in the burner hearth, and the normal temperature combustion air enters burner hearth by negative pressure suction in the burner hearth, and steam generator system can not established air blast, makes Temperature Distribution more even, moves safer.Be applicable to various boilers, be particularly useful for gas fired-boiler.
Description of drawings
Fig. 1 is to be the structure principle chart of boiler of the prior art;
Fig. 2 is the systematic schematic diagram of thermal storage type energy-saving boiler of the present invention.
The specific embodiment
Thermal storage type energy-saving boiler of the present invention and combustion method thereof, its preferable specific embodiment comprises body of heater as shown in Figure 2, the inside of body of heater constitutes the combustion chamber, on the wall of body of heater burner is housed, body of heater is equipped with two burners at least, can be provided with a plurality of burners.In described a plurality of burner, per two burners are a pair of, mutually the periodicity reversing combustion.1,2,3,4 pair of burner can be set, and also can be other quantity as required.
Described burner is provided with high temperature combustion air inlet and fuel inlet, and high temperature combustion air inlet wherein is used as the high-temperature flue gas outlet when the burner burn-out.Specifically be that when burner combustion, high temperature combustion air inlet is used to enter the high temperature combustion air; When the burner burn-out, high temperature combustion air inlet is used to discharge high-temperature flue gas.
Described high temperature combustion air inlet is connected with regenerator, and described regenerator is connected with normal temperature combustion air inlet and low-temperature flue gas outlet.Can be provided with reversing arrangement between described normal temperature combustion air inlet and the low-temperature flue gas outlet.Specifically the normal temperature combustion air that can be connected with regenerator enters pipeline and the low-temperature flue gas discharge line is designed to a pipeline, exports the junction at normal temperature combustion air inlet and low-temperature flue gas reversal valve is set.Also can enter on pipeline and the low-temperature flue gas discharge line control valve is set respectively, the two is controlled respectively at the normal temperature combustion air.
The low-temperature flue gas outlet is connected with air-introduced machine, and low-temperature flue gas is discharged by induced draft blower withdraws, makes to keep negative pressure in the burner hearth.Normal temperature combustion air inlet is open, and air enters burner hearth by negative pressure suction in the burner hearth, and steam generator system can not established air blast.
Normal temperature combustion air inlet, low-temperature flue gas outlet and fuel inlet place can also be connected with volume control device respectively.
During boiler operatiopn, in every pair of burner, during any burner combustion, another burner cuts out.In the described burner combustion process, the normal temperature combustion air inlet and the normal temperature fuel inlet that are connected with this burner are opened the low-temperature flue gas port closing that is connected with this burner simultaneously; In the described burner burn-out process, the low-temperature flue gas outlet that is connected with this burner is opened, and the normal temperature combustion air inlet and the normal temperature fuel inlet that are connected with this burner are simultaneously closed.
For example, when burner A burning, when burner B closes, after the normal temperature air process regenerator A preheating, it is combustion-supporting to become the high temperature air participation, and the temperature of the high temperature combustion air after the preheating can reach more than 900 ℃.Meanwhile, release heat during high-temperature flue gas process regenerator B, temperature is dropped to back discharge about 120 ℃-200 ℃.
After burning a period of time, the temperature of regenerator B raises, when the temperature of regenerator A drops to certain value, close burner A, start burner B, simultaneously, the normal temperature combustion air inlet of two burners and the reversing arrangement commutation of exhanst gas outlet junction participate in combustion-supporting, high-temperature flue gas process regenerator A release heat after the normal temperature combustion air process regenerator B preheating.The time of commutation was generally 30 seconds-200 seconds.
In the above-mentioned combustion process, by periodically commutation, regenerator A and regenerator B carry out the preheating of combustion air and the heat release of high-temperature flue gas by turns, reach the purpose of recovery waste heat and warm-up combustion-supporting air.After the high-temperature flue gas process regenerator release heat, the temperature of flue gas can drop to about 120 ℃-200 ℃.
Heat accumulating type boiler of the present invention when on the one hand hot flue gas is discharged, carries out waste heat recovery through regenerator, has reduced heat-energy losses, has improved efficiency of combustion; On the other hand, during burner combustion, normal temperature air is combustion-supporting through participating in after the regenerator preheating, can improve ignition temperature; The third aspect, a plurality of burners adopt periodically reversing combustion, have eliminated localized hyperthermia district in the combustion chamber, make uniformity of temperature profile, have improved the burner hearth life-span.In addition, low-temperature flue gas is discharged by induced draft blower withdraws, keeps negative pressure in the burner hearth, and steam generator system does not have air blast, and boiler operatiopn is more safe and reliable.Be applicable to various boilers, be particularly useful for gas fired-boiler.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (4)
1, a kind of thermal storage type energy-saving boiler, comprise body of heater, it is characterized in that, described body of heater is provided with two or more burners, described burner is provided with high temperature combustion air inlet, fuel entrance, and described high temperature combustion air inlet is connected with regenerator, and described regenerator is provided with normal temperature combustion air inlet and low-temperature flue gas outlet, described low-temperature flue gas outlet is connected with air-introduced machine, and described air-introduced machine makes by bleeding and keeps negative pressure in the burner hearth.
2, thermal storage type energy-saving boiler according to claim 1 is characterized in that, is provided with reversing arrangement between described normal temperature combustion air inlet and the low-temperature flue gas outlet.
3, the combustion method of a kind of claim 1 or 2 described thermal storage type energy-saving boilers is characterized in that, in the combustion process, low-temperature flue gas is discharged by induced draft blower withdraws, makes to keep negative pressure in the burner hearth; The normal temperature combustion air enters burner hearth by negative pressure suction in the burner hearth.
4, the combustion method of thermal storage type energy-saving boiler according to claim 3 is characterized in that, high-temperature flue gas becomes described low-temperature flue gas after the regenerator heat absorption; Described normal temperature combustion air becomes the high temperature combustion air after the regenerator heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100765765A CN101451767A (en) | 2009-01-09 | 2009-01-09 | Thermal storage type energy-saving boiler and burning method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100765765A CN101451767A (en) | 2009-01-09 | 2009-01-09 | Thermal storage type energy-saving boiler and burning method thereof |
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| CN101451767A true CN101451767A (en) | 2009-06-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425808A (en) * | 2011-12-05 | 2012-04-25 | 济南钢铁股份有限公司 | Combustion control system of heat accumulating heating furnace |
| CN102913955A (en) * | 2012-06-13 | 2013-02-06 | 北京神雾环境能源科技集团股份有限公司 | Energy-saving fuel gas oven tool |
| CN104697328A (en) * | 2015-03-16 | 2015-06-10 | 中国科学院广州能源研究所 | Novel efficient energy-saving heat accumulating type ceramic roller kiln |
| CN104713354A (en) * | 2015-03-13 | 2015-06-17 | 中国科学院广州能源研究所 | Novel energy-saving wide-body ceramic roller kiln |
| CN108253436A (en) * | 2018-03-05 | 2018-07-06 | 南通贝思特机械工程有限公司 | A kind of application energy-saving thermal storage formula multitower room incinerator RTO systems |
-
2009
- 2009-01-09 CN CNA2009100765765A patent/CN101451767A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425808A (en) * | 2011-12-05 | 2012-04-25 | 济南钢铁股份有限公司 | Combustion control system of heat accumulating heating furnace |
| CN102913955A (en) * | 2012-06-13 | 2013-02-06 | 北京神雾环境能源科技集团股份有限公司 | Energy-saving fuel gas oven tool |
| CN102913955B (en) * | 2012-06-13 | 2016-03-30 | 北京神雾环境能源科技集团股份有限公司 | A kind of energy-saving gas cooker |
| CN104713354A (en) * | 2015-03-13 | 2015-06-17 | 中国科学院广州能源研究所 | Novel energy-saving wide-body ceramic roller kiln |
| CN104697328A (en) * | 2015-03-16 | 2015-06-10 | 中国科学院广州能源研究所 | Novel efficient energy-saving heat accumulating type ceramic roller kiln |
| CN108253436A (en) * | 2018-03-05 | 2018-07-06 | 南通贝思特机械工程有限公司 | A kind of application energy-saving thermal storage formula multitower room incinerator RTO systems |
| CN108253436B (en) * | 2018-03-05 | 2023-09-15 | 南通贝思特机械工程有限公司 | Coating is with energy-conserving heat accumulation formula multi-tower room incinerator RTO system |
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Open date: 20090610 |