CN101021307A - Efficient low-discharging heat accumulating gas boiler - Google Patents
Efficient low-discharging heat accumulating gas boiler Download PDFInfo
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- CN101021307A CN101021307A CN 200710027146 CN200710027146A CN101021307A CN 101021307 A CN101021307 A CN 101021307A CN 200710027146 CN200710027146 CN 200710027146 CN 200710027146 A CN200710027146 A CN 200710027146A CN 101021307 A CN101021307 A CN 101021307A
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Abstract
The present invention relates to a high-efficiency low-discharge heat storage type gas boiler. It is composed of combustor, combustion chamber, gas inlet pipe, air inlet pipe and gas nozzle. The described combustion chamber is U-type double-layer cover-mounted structure, its external layer is evaporator, the interior of the described combustor is filled up with heat storage layer. Said invention has two combustors capable of alternatively making combustion and heat storage, said two combustors are respectively mounted at two ends of said combustion chamber. The described heat storage layer includes honeycomb ceramic layer and stainless steel perforated plate layer, the honeycomb ceramic layer is filled in the lower of combustor, and the stainless steel perforated plate layer is filled in the upper portion of combustor.
Description
Technical field
The present invention relates to boiler, is a kind of efficient low-discharging heat accumulating gas boiler specifically, and this boiler can utilize heat-storing material savings using waste heat from tail gas to be used for the used air of preheating burning next time.
Background technology
All be non-heat accumulating type at combustion gas (fuel oil) boiler of usefulness at present, its structure all is to have a combustion chamber to make radiant section, and two tube sides of turning back of bobbin carriage are from behind made convection section again, and flue gas is drained from smokestack then.This class boiler ubiquity following point:
1, starting is slow, the energy consumption height of starting, length consuming time.
2, the convection section pipe is many, and evaporimeter will be done greatly and thick, and the steel consumption is big, the cost height, and equipment is huge, and floor space is big.
3, meet combustor and have a cog loose, the grey black of incomplete combustion can cause dirtiness resistance to increase rapidly attached on the colder convection section tube inwall, and boiler thermal output is significantly less than design load.
4, do not blow grey function, need the manually logical ash of blowing out.
5, after the convection section pipe has deposited black smoke, boiler thermal output reduces greatly, boiler output does not satisfy user's needs, this moment, the user often transferred the large-scale combustion acc power by force, fire box temperature has improved, and generates a large amount of NOx and many rings organic matter of carcinogenesis is arranged, the smokestack black smoke of emerging, grey black can worsen heat-transfer behavior attached on the colder convection section tube inwall.
Summary of the invention
The purpose of this invention is to provide a kind of efficient low-discharging heat accumulating gas boiler, required air when this boiler can utilize heat-storing material savings using waste heat from tail gas to be used for preheating burning next time.
Efficient low-discharging heat accumulating gas boiler provided by the invention, form by burner, combustion chamber, gas inlet pipe, air blast pipe, gas nozzle etc., described combustion chamber is the U type, double-deck sleeve type structure, skin is an evaporimeter, the burner the inside is filled with recuperation layer, and the burner of alternate combustion and accumulation of heat has two, is installed in burner ends respectively.
Described recuperation layer comprises ceramic honeycomb layer and stainless steel porous flaggy, and wherein the ceramic honeycomb layer is filled in the bottom of burner, and stainless steel porous flaggy is filled in the top of burner.
Described air blast pipe one termination air blast, another termination four-way change-over valve, two outlets of this four-way change-over valve connect the air inlet of two burners respectively; The gas nozzle of gas inlet pipe in four-way change-over valve connects burner, this four-way change-over valve have an adapter to be connected with the air blast pipe in addition.
Traditional combustion gas (fuel oil) boiler is formed whole heat transfer face by radiant section and convection section, and the present invention is used for the used air of this burner of preheating burning next time with heat-storing material savings using waste heat from tail gas, thereby have only radiant section, and there is not convection section, there is not that a large amount of metal pipe of traditional boiler convection section.
Preheated air is brought up to this operation principle more than the fuel used theoretical temperature combustion to chamber temperature thereby traditional boiler is not used accumulation of heat---heat release---, and this is the fundamental difference of the present invention and traditional combustion gas (fuel oil) boiler.This difference just makes evaporimeter of the present invention do very for a short time, and dress water is few, saves great deal of steel.With 1 ton of boiler is example, traditional will use 3.5 tons of steel, 2 tons in dress water, the present invention saves 60% with 1.4 tons of steel (containing subsidiary engine), 0.25 ton in dress water, has only 1/8 of traditional product, add that the present invention utilizes burner that chamber temperature is brought up to more than the fuel used theoretical temperature combustion, thereby obtain the technology of high-power starting, make the starting time of the present invention less than 1/10 of traditional product.This is mysterious on traditional boiler.
The present invention can save each starting energy consumption 80%.
For these reasons, the present invention compares with traditional combustion gas (fuel oil) boiler, has following advantage:
1, evaporimeter adopts the double-deck sleeve type structure of U type, and volume is little, and dress water is few, and starting is fast, and energy consumption is little.Starting time has only 10% of conventional boiler, starts energy consumption at every turn and saves 80%.
2, thermal efficiency height can reach 92%, improves about 15% than existing middle-size and small-size combustion gas (fuel oil) boiler, and cost reduces by 30～50%.
3, can transfer the operation of low-power parameter after boosting to, guarantee that discharged nitrous oxides is up to standard.
4, have autompulse and blow grey function, exempt from the labor of logical ash.
Description of drawings
Fig. 1 is a structure chart of the present invention;
Fig. 2 is the left view of Fig. 1.
The specific embodiment
With reference to Fig. 1, Fig. 2, efficient low-discharging heat accumulating gas boiler provided by the invention, form by burner [1], combustion chamber [11], gas inlet pipe [14], air blast pipe [4], gas nozzle [12] etc., described combustion chamber [11] is the U type, double-deck sleeve type structure, skin is evaporimeter [10], burner [1] the inside is filled with recuperation layer, the burner of alternate combustion and accumulation of heat [1] has two, is installed in two ends, combustion chamber [11] respectively.Described recuperation layer comprises ceramic honeycomb layer [13] and stainless steel porous flaggy [2], wherein ceramic honeycomb layer [13] is filled in the bottom of burner [1], stainless steel porous flaggy [2] is laid by certain spaced and parallel by some, is filled in the top of burner [1].
Described air blast pipe [4] one termination air blasts [15] are sieve time air blast, another termination four-way change-over valve [5], and two outlets of this four-way change-over valve [5] connect the air inlet [3] of two burners respectively; Gas inlet pipe [14] is connected with four-way change-over valve [16] behind fuel automatic pressure reducing valve [19] again, connects the gas nozzle [12] in the burner [1] afterwards, and this four-way change-over valve [16] has an adapter [17] to be connected with air blast pipe [4] in addition.
The water supply of evaporimeter [10] is provided by water supply installation [18].
Respectively be connected to vapour-discharge tube [7] at the two ends of evaporimeter [10], the other end of vapour-discharge tube [7] is connected to vapour liquid separator [6], has liquid back pipe [8] to be connected with evaporimeter [10] on the vapour liquid separator [6], is connected to row's residual valve [9] in the bottom of evaporimeter [10].
Two burners of the present invention [1] are installed in two ends, combustion chamber [11], the flow direction of four-way change-over valve [5] periodic variation air and waste gas by control, the flow direction of then controlling four-way change-over valve [16] change combustion gas makes two burner alternate combustion and accumulation of heat, moves in endless cycles.
Has the accumulation of heat effect owing to be filled with recuperation layer in the burner [1], can bring up to combustion chamber [11] temperature more than the fuel used theoretical temperature combustion, the flame core temperature can reach 3000K, takes this to obtain high-power starting, reach and press the back to return the operation of normal power parameter, guarantee that discharged nitrous oxides is up to standard.
In combustion chamber [11], the heat energy radiation that fuel discharges is transmitted to working medium (generally being water) again on the steel alloy wall of high-temp combustion chamber internal surface, and this is a radiant section.The flame recuperation layer in the burner [1] of flowing through behind radiant section reclaims its waste heat of savings by recuperation layer and is used for the used air of this burner of preheating burning next time.
Four-way change-over valve [5] opens circuit in short-term air blast [15] to be built the pressure obtain autompulse and blows grey function, exempts from the labor of logical ash.
The present invention obtains the principle of high-power starting institute foundation because of accumulation of heat:
We know by the knowledge of thermal conduction study: the mode that high temp objects conducts heat to cryogenic object is based on radiation, the temperature difference is big more between the two, radiation shared share in (conduction, convection current, radiation) three kinds of heat transfer types is big more, and such relation is arranged: the quadruplicate difference that the speed of radiant heat transfer and their absolute temperature remove 100 merchant is directly proportional:
Available formula is expressed as:
Q
(1-2)∝(T
1/100)
4-(T
2/100)
4
T
1---the absolute temperature of high temp objects
T
2---the absolute temperature of cryogenic object
Here, high temp objects is the flame in the combustion chamber, and the flame kernel temperature can reach 3000K, the 773K and heating surface is only had an appointment, and temperature difference is up to 2227K, heat transfer type is based on radiation, and the about 1773K of flame core temperature under the normal power condition, the heating surface 673K that only has an appointment, the about 1100K of temperature difference, heat transfer type is also based on radiation, and we can be with above-mentioned relational expression budgetary estimate once: the ratio of the speed of radiant heat transfer when the flame core temperature is respectively 3000K and 1773K:
Q
(1-2) 3000/ Q
(1-2) 1773=[(3000 ÷ 100)
4-(773 ÷ 100)
4]/[(1773 ÷ 100)
4-(673 ÷ 100)
4] 8.3 times of ≈
This digital implication is: when flame core temperature of the present invention was transferred to 3000K, the rate of heat transfer of boiler furnace flue was 8 times of traditional product.But consider the emission level problem of NOx, blower fan does not have so big air quantity yet.But the power of twice is no problem.
Also have, because the present invention has saved the convection section of conventional boiler, evaporator capacity of the present invention has only 1/8 of conventional boiler, and from these two, the moving speed of starting of the present invention can reach 16 times of conventional boiler.But consider the fire-resistant level of material, get 10 times also just passable.
The present invention is that fuel will be changed scalable nozzle with oils, in order to avoid burnt during accumulation of heat.
Claims (5)
1, a kind of efficient low-discharging heat accumulating gas boiler, form by burner [1], combustion chamber [11], gas inlet pipe [14], air blast pipe [4], gas nozzle [12] etc., it is characterized in that described combustion chamber [11] is the U type, double-deck sleeve type structure, skin is evaporimeter [10], burner [1] the inside is filled with recuperation layer, and the burner of alternate combustion and accumulation of heat [1] has two, is installed in two ends, combustion chamber [11] respectively.
2, efficient low-discharging heat accumulating gas boiler according to claim 1, it is characterized in that described recuperation layer comprises ceramic honeycomb layer [13] and stainless steel porous flaggy [2], wherein ceramic honeycomb layer [13] is filled in the bottom of burner [1], and stainless steel porous flaggy [2] is filled in the top of burner [1].
3, efficient low-discharging heat accumulating gas boiler according to claim 1, it is characterized in that described air blast pipe [4] one termination air blasts [15], another termination four-way change-over valve [5], two outlets of this four-way change-over valve [5] connect the air inlet [3] of two burners [1] respectively; The gas nozzle [12] of gas inlet pipe [14] in four-way change-over valve [16] connects burner [1], this four-way change-over valve [16] have an adapter [17] to be connected with air blast pipe [4] in addition.
4, efficient low-discharging heat accumulating gas boiler according to claim 3 is characterized in that described air blast [15] is sieve time air blast.
5, efficient low-discharging heat accumulating gas boiler according to claim 3 is characterized in that gas inlet pipe [14] is connected with four-way change-over valve [16] again behind fuel automatic pressure reducing valve [19].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100271465A CN100567811C (en) | 2007-03-14 | 2007-03-14 | Heat accumulating gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100271465A CN100567811C (en) | 2007-03-14 | 2007-03-14 | Heat accumulating gas boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021307A true CN101021307A (en) | 2007-08-22 |
| CN100567811C CN100567811C (en) | 2009-12-09 |
Family
ID=38709152
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100271465A Expired - Fee Related CN100567811C (en) | 2007-03-14 | 2007-03-14 | Heat accumulating gas boiler |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006535A (en) * | 2014-05-30 | 2014-08-27 | 北京华福神雾工业炉有限公司 | Heat accumulating type burning organic heat carrier boiler |
| CN106352333A (en) * | 2015-07-17 | 2017-01-25 | 江苏中科睿赛污染控制工程有限公司 | Steam heat treatment device, treatment method and use thereof |
| CN107166404A (en) * | 2017-05-25 | 2017-09-15 | 梁兆志 | A kind of heat accumulating type U-shaped bed garbage furnace or coal gasifier |
| CN108758616A (en) * | 2018-06-25 | 2018-11-06 | 浙江金锅锅炉有限公司 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
| CN111023141A (en) * | 2018-12-24 | 2020-04-17 | 长沙理工大学 | Vertical boiler with porous medium hearth |
| CN112146447A (en) * | 2020-09-15 | 2020-12-29 | 广西柳州钢铁集团有限公司 | Method for preventing ash spraying of air release valve of double-chamber kiln |
| CN115342380A (en) * | 2022-07-13 | 2022-11-15 | 清航空天(北京)科技有限公司 | Nonlinear detonation combustion chamber |
-
2007
- 2007-03-14 CN CNB2007100271465A patent/CN100567811C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006535A (en) * | 2014-05-30 | 2014-08-27 | 北京华福神雾工业炉有限公司 | Heat accumulating type burning organic heat carrier boiler |
| CN106352333A (en) * | 2015-07-17 | 2017-01-25 | 江苏中科睿赛污染控制工程有限公司 | Steam heat treatment device, treatment method and use thereof |
| CN107166404A (en) * | 2017-05-25 | 2017-09-15 | 梁兆志 | A kind of heat accumulating type U-shaped bed garbage furnace or coal gasifier |
| CN108758616A (en) * | 2018-06-25 | 2018-11-06 | 浙江金锅锅炉有限公司 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
| CN111023141A (en) * | 2018-12-24 | 2020-04-17 | 长沙理工大学 | Vertical boiler with porous medium hearth |
| CN111023141B (en) * | 2018-12-24 | 2021-08-13 | 长沙理工大学 | Vertical boiler with porous medium hearth |
| CN112146447A (en) * | 2020-09-15 | 2020-12-29 | 广西柳州钢铁集团有限公司 | Method for preventing ash spraying of air release valve of double-chamber kiln |
| CN115342380A (en) * | 2022-07-13 | 2022-11-15 | 清航空天(北京)科技有限公司 | Nonlinear detonation combustion chamber |
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| Publication number | Publication date |
|---|---|
| CN100567811C (en) | 2009-12-09 |
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Granted publication date: 20091209 Termination date: 20120314 |