CN105276575A - Boiler heating system - Google Patents
Boiler heating system Download PDFInfo
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- CN105276575A CN105276575A CN201410262326.1A CN201410262326A CN105276575A CN 105276575 A CN105276575 A CN 105276575A CN 201410262326 A CN201410262326 A CN 201410262326A CN 105276575 A CN105276575 A CN 105276575A
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- boiler
- pipeline
- returning charge
- circulating ash
- transmission pipeline
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Abstract
The invention brings forward a boiler heating system which comprises a first boiler, a second boiler, a transmission pipeline and a power unit. The transmission pipeline is connected to a first material-returning pipeline and a second material-returning pipeline. Circulating ash in the first boiler flows back to the first boiler through the first material-returning pipeline. Circulating ash in the second boiler flows back to the second boiler through the second material-returning pipeline. When the first boiler is in an operating state and the second boiler is in a starting state, part of the circulating ash in the first material-returning pipeline is transmitted to the second material-returning pipeline through the transmission pipeline. The power unit is connected to the transmission pipeline and is used for providing the circulating ash in the transmission pipeline with power. Through technical scheme, non-oil or low-oil ignition of the boiler can be realized, oil consumption for starting is greatly reduced and corresponding start-up cost is furthermore reduced.
Description
Technical field
The present invention relates to boiler technology field, in particular to a kind of boiler heating system.
Background technology
CFBB adapts to the features such as strong due to its low stain burnt and fuel, has become one of Major Technology of Filter Tuber For Clean Coal burning, particularly rapid at Chinese development.The sparking mode of current CFBB mainly adopts grease gun igniting mode, a fluidized wind is heated by non-combusted fuels in start-up course, a fluidized wind of high temperature is through air distribution plate, heating starting bed material, when bed material temperature degree is warming up to coal tossing temperature, coal combustion thrown by boiler, thus reaches boiler startup object, so understand the fuel oil of at substantial in start-up course.
According to on-the-spot practical operation situation, for the Properties of CFB of 300MW unit, debug the type unit in test run process, expend fuel oil about 1000t, normal starting ignition oil consumption is about 40t/h, the type unit starts about three times every year, and annual starting ignition fuel consumption is about 120t/h.With diesel oil per ton 7000 yuan calculating, the type unit regulation starts oil consumption expense 7,000,000 yuan, and in normal operation, year starts oil consumption expense about 840,000 yuan.Visible, the startup fuel consumption of boiler and corresponding payment for initiation are all sizable.
Summary of the invention
(1) technical problem that will solve
Technical problem to be solved by this invention is that CFBB ignition trigger fuel consumption is large, causes the technical problem that corresponding payment for initiation is larger.
(2) technical scheme
For this purpose, the present invention proposes a kind of boiler heating system, it is characterized in that, comprising: the first boiler and the second boiler; Transmission pipeline, be connected to the first returning charge pipeline and the second returning charge pipeline, wherein, circulating ash in described first boiler flows back to described first boiler by described first returning charge pipeline, circulating ash in described second boiler flows back to described second boiler by described second returning charge pipeline, be in running status at described first boiler, when described second boiler is in starting state, the component loops ash in described first returning charge pipeline transfers to described second Returning pipe by described transmission pipeline; Power set, are connected to described transmission pipeline, for providing power for the circulating ash in described transmission pipeline.
Preferably, also comprise: the first separator, be connected to described first boiler and described first returning charge pipeline, for the circulating ash in described first boiler is drained into described first returning charge pipeline; Second separator, is connected to described second boiler and described second returning charge pipeline, for the circulating ash in described second boiler is drained into described second returning charge pipeline.
Preferably, described first returning charge pipeline comprises: the first standpipe, is connected to described first separator and the first material returning device; Described first material returning device, returns described first separator for the circulating ash preventing described first separator from discharging; First returning charge leg, is connected to described first material returning device and described first boiler, returns described first boiler for the circulating ash of being discharged by described first separator; And described second returning charge pipeline comprises: the second standpipe, is connected to described second separator and the second material returning device; Described second material returning device, returns described second separator for the circulating ash preventing described second separator from discharging; Second returning charge leg, is connected to described second material returning device and described second boiler, returns described second boiler for the circulating ash of being discharged by described second separator.
Preferably, described transmission pipeline comprises: the first isocon, is connected to described first standpipe and female pipe; First collecting pipe, is connected to described first returning charge leg and described mother's pipe; Second isocon, is connected to described second standpipe and described mother's pipe; Second collecting pipe, is connected to described second returning charge leg and described mother's pipe; Described mother's pipe, for connecting described first isocon, the first collecting pipe, the second isocon, the second collecting pipe; Wherein, running status is at described first boiler, when described second boiler is in starting state, component loops ash in described first returning charge pipeline flows into described first isocon from described first standpipe, described mother's pipe is flowed into from described first isocon, flow into described second collecting pipe from described female pipe, flow into described second returning charge leg from described second collecting pipe.
Preferably, also comprise: the first flow divider, be arranged at the junction of described first isocon and described first standpipe, running status is at described first boiler, open when described second boiler is in starting state, flow into the ratio of described transmission pipeline for the circulating ash controlled in described first returning charge pipeline; First manifold valve, be arranged at the junction of described first collecting pipe and described female pipe, be in running status at described second boiler, open when described first boiler is in starting state, flow into the ratio of described second returning charge pipeline for the circulating ash controlled in described transmission pipeline; Second flow divider, be arranged at the junction of described second isocon and described second standpipe, be in running status at described first boiler, open when described second boiler is in starting state, flow into the ratio of described transmission pipeline for the circulating ash controlled in described second returning charge pipeline; Second manifold valve, be arranged at the junction of described second collecting pipe and described female pipe, be in running status at described second boiler, open when described first boiler is in starting state, flow into the ratio of described first returning charge pipeline for the circulating ash controlled in described transmission pipeline.
Preferably, also comprise: aperture control element, for controlling the aperture of described first flow divider, the first manifold valve, the second flow divider and/or the second manifold valve.
Preferably, described power set comprise: air accumulator, are connected to described transmission pipeline by power conduit, for providing aerodynamic force for the circulating ash in described transmission pipeline; Described power conduit, is connected to described air accumulator and described transmission pipeline, for by the gas transport in described air accumulator to described transmission pipeline; Dynamic valve, is arranged at the junction of described power conduit and described air accumulator, provides aerodynamical size for controlling described air accumulator for the circulating ash in described transmission pipeline.
Preferably, also comprise: temperature-monitoring element, for monitoring the temperature in described first boiler and/or the temperature in described second boiler.
Preferably, also comprise: pressure monitoring element, for monitoring the pressure in described transmission pipeline.
(3) beneficial effect
By adopting boiler heating system disclosed in this invention, boiler can be realized without oil or few-oil ignition, greatly reducing and starting oil consumption, and then reduce corresponding payment for initiation use.
Accompanying drawing explanation
Can understanding the features and advantages of the present invention clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the present invention, in the accompanying drawings:
Fig. 1 shows the structural representation according to boiler heating system in one embodiment of the invention;
Fig. 2 shows the concrete structure schematic diagram according to boiler heating system in one embodiment of the invention.
Drawing reference numeral illustrates:
10-first boiler; 11-first returning charge pipeline; 12-first separator; 111-first standpipe; 112-first material returning device; 113-first returning charge leg;
20-second boiler; 21-second returning charge pipeline; 22-second separator; 211-second standpipe; 212-second material returning device; 213-second returning charge leg;
30-transmission pipeline; 31-first isocon; 32-first collecting pipe; 33-second isocon; 34-second collecting pipe; 35-mother pipe; 36-first flow divider; 37-first manifold valve; 38-second flow divider; 39-second manifold valve;
40-power set; 41-air accumulator; 42-power conduit; 43-dynamic valve.
Detailed description of the invention
For making object of the present invention, content and advantage clearly, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Fig. 1 shows the structural representation according to boiler heating system in one embodiment of the invention.
As shown in Figure 1, comprise according to boiler heating system in one embodiment of the invention: the first boiler 10 and the second boiler 20; Transmission pipeline 30, be connected to the first returning charge pipeline 11 and the second returning charge pipeline 21, wherein, circulating ash in first boiler 10 flows back to the first boiler 10 by the first returning charge pipeline 11, circulating ash in second boiler 20 flows back to the second boiler 20 by the second returning charge pipeline 21, be in running status at the first boiler 10, when the second boiler 20 is in starting state, the component loops ash in the first returning charge pipeline 11 transfers to the second Returning pipe 21 by transmission pipeline 30; Power set 40, are connected to transmission pipeline 30, for providing power for the circulating ash in transmission pipeline 30.
When the first boiler 10 is in running status, its sub-argument circulating ash temperature is out very high, component loops ash wherein can be directed into the second boiler 20, the bed material in the second boiler 20 under starting state is in heating, thus make the temperature in the second boiler 20 finally reach coal tossing temperature, now can burn as dropping into fire coal in the second boiler 20, the high-temp circulating ash in the first boiler 10 is continued to import the second boiler 20, the temperature in the second boiler 20 can be made to raise further, and then reach minimum oil of not throwing and surely fire load, then the second boiler 20 enters running status.Whole heating process heats the second boiler 20 mainly through the high-temp circulating ash from the first boiler 10, decreases the fuel oil needed for startup second boiler 20, reduces relevant payment for initiation and uses.Wherein transmission pipeline 30 can adopt the material identical with the second material returning device 212 with the first material returning device 112, has identical wear-resisting, fire-resistant, withstand voltage degree, and insulation material.
Fig. 2 shows the concrete structure schematic diagram according to boiler heating system in one embodiment of the invention.
As shown in Figure 2, also comprise according to boiler heating system in one embodiment of the invention: the first separator 12, be connected to the first boiler 10 and the first returning charge pipeline 11, for the circulating ash in the first boiler 10 is drained into the first returning charge pipeline 11; Second separator 22, is connected to the second boiler 20 and the second returning charge pipeline 21, for the circulating ash in the second boiler 20 is drained into the second returning charge pipeline 21.
Preferably, the first returning charge pipeline 11 comprises: the first standpipe 111, is connected to the first separator 12 and the first material returning device 112; First material returning device 112, returns the first separator 12 for the circulating ash preventing the first separator 12 from discharging; First returning charge leg 113, be connected to the first material returning device 112 and the first boiler 10, the circulating ash for being discharged by the first separator 12 returns the first boiler 10; And second returning charge pipeline 21 comprise: the second standpipe 211, is connected to the second separator 22 and the second material returning device 212; Second material returning device 212, returns the second separator 212 for the circulating ash preventing the second separator 22 from discharging; Second returning charge leg 213, be connected to the second material returning device 212 and the second boiler 20, the circulating ash for being discharged by the second separator 212 returns the second boiler 20.
Preferably, transmission pipeline 30 comprises: the first isocon 31, is connected to the first standpipe 111 and female pipe 35; First collecting pipe 32, is connected to the first returning charge leg 113 and female pipe 35; Second isocon 33, is connected to the second standpipe 211 and female pipe 35; Second collecting pipe 34, is connected to the second returning charge leg 213 and female pipe 35; Female pipe, for connecting the first isocon 31, first collecting pipe 32, second isocon 33, second collecting pipe 34; Wherein, running status is at the first boiler 10, when second boiler 20 is in starting state, component loops ash in first returning charge pipeline 11 flows into the first isocon 31 from the first standpipe 111, female pipe 35 is flowed into from the first isocon 31, flow into the second collecting pipe 34 from female pipe 35, flow into the second returning charge leg 213 from the second collecting pipe 34.
Preferably, also comprise: the first flow divider 36, be arranged at the junction of the first isocon 31 and the first standpipe 111, running status is at the first boiler 10, open when second boiler 20 is in starting state, flow into the ratio of transmission pipeline 30 for the circulating ash controlled in the first returning charge pipeline 11; First manifold valve 37, be arranged at the junction of the first collecting pipe 32 and female pipe 35, be in running status at the second boiler 20, open when the first boiler 10 is in starting state, flow into the ratio of the second returning charge pipeline 21 for the circulating ash in controls transfer pipeline 30; Second flow divider 38, be arranged at the junction of the second isocon 33 and the second standpipe 211, be in running status at the first boiler 10, open when the second boiler 20 is in starting state, flow into the ratio of transmission pipeline 30 for the circulating ash controlled in the second returning charge pipeline 21; Second manifold valve 39, be arranged at the junction of the second collecting pipe 34 and female pipe 35, be in running status at the second boiler 20, open when the first boiler 10 is in starting state, flow into the ratio of the first returning charge pipeline 11 for the circulating ash in controls transfer pipeline 30.
By arranging valve on the lateral of transmission pipeline 30, can according to the duty of the first boiler 10 and the second boiler 20, controlling by the circulating ash in the first boiler 10 is that the second boiler 20 heats, or is the second boiler heating by the circulating ash in the second boiler 20.Before by the circulating ash in the first boiler 10 being the second boiler 20 heating, first can only open the first flow divider 36, first manifold valve 37, second flow divider 38, the second manifold valve 39 in second manifold valve 39, now power set 40 can provide gas pressure in transmission pipeline 30, gas flow flows into the second returning charge pipeline 21 from power set 40 by transmission pipeline 30, maintain this state a few minutes, deposition cycle ash in transmission pipeline 30 and the second returning charge pipeline 21 can be blown off, avoid being in the second boiler 20 heating process by the circulating ash in the first boiler 10, transmission pipeline 30 or the second returning charge pipeline 21 block.
It should be noted that, according to specific needs, one or more returning charge pipeline can be set for a boiler, and be each returning charge install pipeline correspondingly transmission pipeline, it is made to be connected with the returning charge pipeline on another boiler, Fig. 2 does not draw the first boiler 10 and the second boiler 20, but three returning charge pipelines can be configured for each boiler, and corresponding transmission pipeline is set, annexation between often pair of returning charge pipeline is identical, only depicts the annexation between a pair returning charge pipeline in inner side in Fig. 2.
Preferably, also comprise: aperture control element, for controlling the aperture of the first flow divider 31, first manifold valve 32, second flow divider 33 and/or the second manifold valve 34.
Aperture control element can be connected with temperature-monitoring element, control the aperture of the first flow divider 31, first manifold valve 32, second flow divider 33 and/or the second manifold valve 34 according to the temperature in the boiler in the startup that temperature-monitoring element detects, thus the boiler internal effectively controlled in startup heats up and the rate of rise.Certainly, aforesaid operations also can as required by manually manipulating.
Preferably, power set 40 comprise: air accumulator 41, are connected to transmission pipeline 30 by power conduit 42, for providing aerodynamic force for the circulating ash in transmission pipeline 30; Power conduit 42, is connected to air accumulator 41 and transmission pipeline 30, for by the gas transport in air accumulator 41 to transmission pipeline 30; Dynamic valve 43, is arranged at the junction of power conduit 42 and air accumulator 41, provides aerodynamical size for controlling air accumulator 41 for the circulating ash in transmission pipeline 30.
Air accumulator 41 can be compressed air reservoir, can be public with the air accumulator of limestone system, thus cost-saving.Power set 40 as shown in Figure 2 can comprise two power conduits 42 be connected between air accumulator 41 and transmission pipeline 30, every bar power conduit 42 is arranged a dynamic valve 43, at the first boiler 10 for the second boiler 20 provides circulating ash and the second boiler 20 under the first boiler 10 provides circulating ash two kinds of situations, one in two dynamic valves 43 can be opened respectively, the aerodynamic force of equidirectional can be provided according to the flow direction of circulating ash in transmission pipeline 30 to make air accumulator 41.
Preferably, also comprise: temperature-monitoring element, for monitoring the temperature in the first boiler 10 and/or the temperature in the second boiler 20.Certainly, also the temperature in transmission pipeline 30 can be monitored by temperature-monitoring element as required.
Preferably, also comprise: pressure monitoring element, for monitoring the pressure in transmission pipeline 30.Certainly, also the pressure in the first boiler 10 and/or the pressure in the second boiler 20 can be monitored by pressure monitoring element as required.
Although describe embodiments of the present invention by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such amendment and modification all fall into by within claims limited range.
Claims (9)
1. a boiler heating system, is characterized in that, comprising: the first boiler and the second boiler;
Transmission pipeline, be connected to the first returning charge pipeline and the second returning charge pipeline, wherein, circulating ash in described first boiler flows back to described first boiler by described first returning charge pipeline, circulating ash in described second boiler flows back to described second boiler by described second returning charge pipeline, be in running status at described first boiler, when described second boiler is in starting state, the component loops ash in described first returning charge pipeline transfers to described second Returning pipe by described transmission pipeline;
Power set, are connected to described transmission pipeline, for providing power for the circulating ash in described transmission pipeline.
2. boiler heating system according to claim 1, is characterized in that, also comprise:
First separator, is connected to described first boiler and described first returning charge pipeline, for the circulating ash in described first boiler is drained into described first returning charge pipeline;
Second separator, is connected to described second boiler and described second returning charge pipeline, for the circulating ash in described second boiler is drained into described second returning charge pipeline.
3. boiler heating system according to claim 2, it is characterized in that, described first returning charge pipeline comprises:
First standpipe, is connected to described first separator and the first material returning device;
Described first material returning device, returns described first separator for the circulating ash preventing described first separator from discharging;
First returning charge leg, is connected to described first material returning device and described first boiler, returns described first boiler for the circulating ash of being discharged by described first separator; And
Described second returning charge pipeline comprises:
Second standpipe, is connected to described second separator and the second material returning device;
Described second material returning device, returns described second separator for the circulating ash preventing described second separator from discharging;
Second returning charge leg, is connected to described second material returning device and described second boiler, returns described second boiler for the circulating ash of being discharged by described second separator.
4. boiler heating system according to claim 3, it is characterized in that, described transmission pipeline comprises:
First isocon, is connected to described first standpipe and female pipe;
First collecting pipe, is connected to described first returning charge leg and described mother's pipe;
Second isocon, is connected to described second standpipe and described mother's pipe;
Second collecting pipe, is connected to described second returning charge leg and described mother's pipe;
Described mother's pipe, for connecting described first isocon, the first collecting pipe, the second isocon, the second collecting pipe; Wherein,
Running status is at described first boiler, when described second boiler is in starting state, component loops ash in described first returning charge pipeline flows into described first isocon from described first standpipe, described mother's pipe is flowed into from described first isocon, flow into described second collecting pipe from described female pipe, flow into described second returning charge leg from described second collecting pipe.
5. boiler heating system according to claim 4, is characterized in that, also comprise:
First flow divider, be arranged at the junction of described first isocon and described first standpipe, be in running status at described first boiler, open when described second boiler is in starting state, flow into the ratio of described transmission pipeline for the circulating ash controlled in described first returning charge pipeline;
First manifold valve, be arranged at the junction of described first collecting pipe and described female pipe, be in running status at described second boiler, open when described first boiler is in starting state, flow into the ratio of described second returning charge pipeline for the circulating ash controlled in described transmission pipeline;
Second flow divider, be arranged at the junction of described second isocon and described second standpipe, be in running status at described first boiler, open when described second boiler is in starting state, flow into the ratio of described transmission pipeline for the circulating ash controlled in described second returning charge pipeline;
Second manifold valve, be arranged at the junction of described second collecting pipe and described female pipe, be in running status at described second boiler, open when described first boiler is in starting state, flow into the ratio of described first returning charge pipeline for the circulating ash controlled in described transmission pipeline.
6. boiler heating system according to claim 5, is characterized in that, also comprise:
Aperture control element, for controlling the aperture of described first flow divider, the first manifold valve, the second flow divider and/or the second manifold valve.
7. boiler heating system according to any one of claim 1 to 6, is characterized in that, described power set comprise:
Air accumulator, is connected to described transmission pipeline by power conduit, for providing aerodynamic force for the circulating ash in described transmission pipeline;
Described power conduit, is connected to described air accumulator and described transmission pipeline, for by the gas transport in described air accumulator to described transmission pipeline;
Dynamic valve, is arranged at the junction of described power conduit and described air accumulator, provides aerodynamical size for controlling described air accumulator for the circulating ash in described transmission pipeline.
8. boiler heating system according to any one of claim 1 to 6, is characterized in that, also comprise:
Temperature-monitoring element, for monitoring the temperature in described first boiler and/or the temperature in described second boiler.
9. boiler heating system according to any one of claim 1 to 6, is characterized in that, also comprise:
Pressure monitoring element, for monitoring the pressure in described transmission pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262326.1A CN105276575A (en) | 2014-06-12 | 2014-06-12 | Boiler heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262326.1A CN105276575A (en) | 2014-06-12 | 2014-06-12 | Boiler heating system |
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|---|---|
| CN105276575A true CN105276575A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410262326.1A Pending CN105276575A (en) | 2014-06-12 | 2014-06-12 | Boiler heating system |
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| CN201335404Y (en) * | 2009-01-14 | 2009-10-28 | 张德君 | Igniting device of circulating fluid bed boiler |
| CN102095196A (en) * | 2011-03-08 | 2011-06-15 | 张全胜 | Oilless ignition method of fluidized bed boiler |
| CN102128447A (en) * | 2011-04-21 | 2011-07-20 | 张全胜 | Steam heating method of bed materials of fluidized bed boiler |
| CN102840577A (en) * | 2011-06-23 | 2012-12-26 | 中国科学院工程热物理研究所 | Circulation fluidized bed boiler having compact type external dual fluidized bed heat exchanger |
| CN204005968U (en) * | 2014-06-12 | 2014-12-10 | 国网山西省电力公司电力科学研究院 | Boiler heating system |
-
2014
- 2014-06-12 CN CN201410262326.1A patent/CN105276575A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4173189A (en) * | 1977-01-21 | 1979-11-06 | Combustion Engineering, Inc. | Boiler cold start using pulverized coal in ignitor burners |
| CN201335404Y (en) * | 2009-01-14 | 2009-10-28 | 张德君 | Igniting device of circulating fluid bed boiler |
| CN102095196A (en) * | 2011-03-08 | 2011-06-15 | 张全胜 | Oilless ignition method of fluidized bed boiler |
| CN102128447A (en) * | 2011-04-21 | 2011-07-20 | 张全胜 | Steam heating method of bed materials of fluidized bed boiler |
| CN102840577A (en) * | 2011-06-23 | 2012-12-26 | 中国科学院工程热物理研究所 | Circulation fluidized bed boiler having compact type external dual fluidized bed heat exchanger |
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Non-Patent Citations (1)
| Title |
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| 郭慕孙等: "《流态化手册》", 31 January 2008 * |
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Application publication date: 20160127 |