CN203671587U - Efficient energy-saving biomass boiler system - Google Patents
Efficient energy-saving biomass boiler system Download PDFInfo
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- CN203671587U CN203671587U CN201320706975.7U CN201320706975U CN203671587U CN 203671587 U CN203671587 U CN 203671587U CN 201320706975 U CN201320706975 U CN 201320706975U CN 203671587 U CN203671587 U CN 203671587U
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Abstract
The utility model provides an efficient energy-saving biomass boiler system. The efficient energy-saving biomass boiler system comprises a boiler body, a feeding system, a fire grate, a discharging device and a smoke outlet, wherein a combustion chamber and a water vapor system located above the combustion chamber are arranged in the boiler body; the feeding system is connected with the boiler body so that biomass briquette can be fed into the combustion chamber; the fire grate and the discharging device are located at the bottom of the combustion chamber; the smoke outlet is communicated with the combustion chamber and penetrates through the water vapor system. The efficient energy-saving biomass boiler system further comprises a primary air inlet chamber, a secondary air inlet pipe and a secondary air inlet chamber, wherein the primary air inlet chamber is located below the fire grate, and the secondary air inlet pipe and the secondary air inlet chamber are located above the fire grate. Hot smoke discharged from the smoke outlet is recycled by a smoke vent and then passes through a water preheater and a secondary air preheater in sequence. An outlet of the secondary air preheater is connected with the secondary air inlet chamber of the combustion chamber so that inlet air can be heated. The water preheater is connected with a water inlet of a boiler so that inlet water can be heated. According to the efficient energy-saving biomass boiler system, combustion is complete, operation cost of the boiler is low, feeding is convenient, the utilization ratio of heat released after combustion of the biomass briquette is increased, and the purpose that all parameters are automatically controlled so that the output of steam can be guaranteed can be achieved.
Description
Technical field
The utility model relates to a kind of high-efficiency energy-saving biomass steam generator system, belongs to boiler technology field.
Background technology
Biomass molding fuel is regenerative resource, the at present applicable beyond doubt China of biomass fuel burning technology energy development demand, biomass boiler has more and more been paid attention to and has been researched and developed.
In prior art, in order more to effectively utilize biomass energy, extensively adopt the combustion technology that makes full use of biomass molding fuel, biomass molding fuel has progressively substituted the preferred fuels as present boiler combustion such as coal, diesel oil, natural gas, because the combustion system of biomass molding fuel and other energy such as coal, diesel oil, natural gas etc. exist qualitative difference, therefore all exist very large difference at aspects such as feed, boiler structure design and the fuel designs of boiler.In addition, some boilers adopt the means of air intake to increase the oxygen feeding amount of biomass molding fuel combustion process, improve biomass combustion efficiency, but while passing into due to air intake, can absorb the internal temperature of burner hearth, and the heat utilization ratio after biomass combustion discharges is not high.In addition, the hot flue gas of discharging by exhaust opening just directly enters in air after being everlasting and collecting dust, and its waste heat fails effectively to utilize, and has caused the waste of the energy.
Summary of the invention
Main purpose of the present utility model is to provide a kind of high-efficiency energy-saving biomass steam generator system, simple in structure, sufficient combustion, boiler operatiopn cost is low, feed is convenient, improve the heat utilization ratio after biomass molding fuel burning discharges, and can realize the each parameter of automation control and guarantee steam generation.
In order to achieve the above object, the utility model adopts following technical scheme: a kind of high-efficiency energy-saving biomass steam generator system, comprise: boiler body, its be provided with for biomass molding fuel burn therein heat release combustion chamber and be positioned at the water-steam system of top, described combustion chamber; Feeding system, it is connected that with described boiler body biomass molding fuel is sent in described combustion chamber and burnt; Be positioned at fire grate and the drawing mechanism of bottom, combustion chamber; The exhaust opening through water-steam system being communicated with combustion chamber; Also be included in the inlet air plenum that fire grate below arranges, the secondary wind inleting tube arranging and inlet air plenum above fire grate; After exhaust opening hot flue gas out reclaims by smoke exhaust pipe, pass through successively water preheater and Secondary Air preheater, wherein, the outlet of Secondary Air preheater is connected air intake is heated with the secondary air chamber of combustion chamber; Water preheater is connected and makes there is certain temperature into water with the water inlet of boiler.
As further preferred, also comprise the feed arrangement being connected with feeding system, it comprises ground elevator, discharge nozzle, triple valve, storage bin, feed bin pipe and ground material bin, wherein, ground elevator is for promoting the biomass molding fuel in the material bin of ground, then deliver to storage bin by triple valve, discharge nozzle, in addition, material in storage bin is by the valve control discharging of its bottom, and described storage bin material out enters the hopper in the feeding system of boiler through ground elevator, triple valve and feed bin pipe.
As further preferably, on storage bin, be provided with control valve, load is controlled.
As further preferred, storage bin bottom also comprises scrapper conveyor.
As further preferably, also comprise that an air-introduced machine is connected with smoke exhaust pipe flue outlet.
As further preferred, the combustion chamber height of the common coal-burning boiler of described combustion chamber aspect ratio is high, is 60cm.
As further preferred, also comprise electric-control system, measurement mechanism comprising steam pressure, fire box temperature and combustion chamber draft parameter is connected with PLC controller respectively, also comprise the frequency converter being connected with PLC controller, frequency converter is connected with feeding system, fire grate, air-introduced machine, secondary air machine and air blast.Frequency converter, according to steam generation, regulates the air quantity of feeding system increment, fire grate speed, air-introduced machine, secondary air machine and air blast.
The beneficial effects of the utility model are:
(1) burning air distribution technology: biological particles is explosion type burning, because the intensity of a fire is prosperous, volatile matter in part particle does not fully burn and just rises with air-flow, now increase secondary air (supplemental oxygen) at differing heights, different directions, in combustion chamber, produce eddy flow, uncombusted volatile matter is fully burning again; Reach combustion rate 99%.Strengthen in addition hearth combustion space, increase combustion space, the oxygen in unburnt volatile matter and Secondary Air fully burns, and increases boiler heating surface simultaneously, has improved the thermal efficiency.
(2) electric-control system: comprise variablees such as measuring steam pressure flow, fire box temperature, combustion chamber draft, send measured value to PLC, form a difference PID control system with its specification of variables value, come fuel metering increment, fire grate speed, air inducing amount, secondary air amount, the blow rate required by frequency converter; Boiler oil amount, burning velocity, fire box temperature and steam are produced with flux matched, guarantee the enough stable supplies of steam.In particular cases, also can change manual mode operation into.
(3) the hot flue gas that the utility model is discharged by exhaust opening after water preheater and Secondary Air preheater, is connected with secondary air inlet with the water inlet of water-steam system before collection dust, for the water inlet to boiler and secondary air heating.Its waste heat has obtained effective utilization, and has improved the thermal efficiency.The hot flue gas reclaiming to air inlet preheating after, entering high temperature secondary wind in burner hearth can not affect the temperature of burner hearth, not only can oxygen gas-supplying guarantees that living beings are fully burnt can also improve the utilization rate of biomass combustion release heat.And feed arrangement can realize automation control discharging, simple and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment steam generator system.
Fig. 2 is the utility model embodiment boiler internal structural representation.
Fig. 3 is the structural representation of the utility model embodiment feed arrangement.
Description of symbols in accompanying drawing is as follows: 1-burner hearth, 2-water-steam system, 3-feeding system hopper, 4-combustion chamber, 5-fire grate, 6-drawing mechanism, 7-smoke exhaust pipe, 8-flue (connecting to air-introduced machine), 9-Secondary Air preheater, 10-water preheater, inlet air plenum of 11-, 12-secondary air chamber, 13-ground elevator, 14-discharge nozzle, 15-triple valve, 16-storage bin, 17-feed bin pipe, 18-support, 19-ground material bin, 20-valve, 21-secondary wind inleting tube.
The specific embodiment
Realization, functional characteristics and the beneficial effect of the utility model object, be described further below in conjunction with specific embodiment and accompanying drawing.
Below in conjunction with the drawings and specific embodiments, technical scheme described in the utility model is described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1-2, the utility model embodiment high-efficiency energy-saving biomass steam generator system, comprises boiler body, its be provided with for biomass molding fuel burn therein heat release combustion chamber 4 and be positioned at the water-steam system 2 of described burner hearth top; Feeding system, it is connected with described boiler body and burns biomass molding fuel is sent in described combustion chamber 4; Be positioned at fire grate 5 and the drawing mechanism 6 of 4 bottoms, combustion chamber; The smoke exhaust pipe 7 through water-steam system 2 being communicated with combustion chamber; The air-introduced machine connecting with smoke exhaust pipe 7 by flue 8, is also included in fire grate 5 belows inlet air plenum 9 is set one time, and secondary wind inleting tube 21 and inlet air plenum 10 are set above fire grate; Exhaust opening hot flue gas out passes through respectively water preheater 10 and Secondary Air preheater 9 after reclaiming by smoke exhaust pipe 7, and wherein, the heat in flue gas transfers heat to air or water, and the outlet of Secondary Air preheater 9 is connected air intake is heated with the secondary air inlet of combustion chamber 4; Water preheater 10 is connected and makes there is certain temperature into water with the water inlet of boiler.In the utility model embodiment, combustion chamber 4 is highly 60cm.
As shown in Figure 3, the described feed arrangement being connected with feeding system comprises ground riser 13, discharge nozzle 14, triple valve 15, storage bin 16, feed bin pipe 17, support 18, ground material bin 19, wherein, ground elevator 13 is for promoting the biomass molding fuel in ground material bin 19, then by triple valve 15, discharge nozzle 14 is delivered to storage bin 16, in addition, the material that storage bin is 16 li is controlled discharging by the valve 20 of its bottom, described storage bin 16 material is out through ground elevator 13, triple valve 15 and feed bin pipe 18 enter the secondary feed bin in the feeding system of boiler.Storage bin 16 bottoms also comprise scrapper conveyor.
The utility model embodiment electric-control system, the measurement mechanism that comprises steam pressure, fire box temperature and combustion chamber draft parameter is connected with PLC controller respectively, also comprise the frequency converter being connected with PLC controller, frequency converter, according to steam generation, regulates feeding system increment, fire grate speed, air-introduced machine, secondary air machine and air blast.
Wherein the overfire air fan of the charging gear of boiler body, air-introduced machine, air blast, frequency conversion control is subject to the FEEDBACK CONTROL of boiler pressure, steam flow, fire box temperature; The speed of particle burning is subject to steam pressure, flow, the FEEDBACK CONTROL that in burner hearth, negative pressure is measured.
The utility model embodiment particle burn-off rate 99%, boiler thermal output reaches 80%, and smoke dust discharge concentration is less than 100mg/Nm
3; 1 grade of the graceful blackness of Green.The utility model embodiment burning highly effective: combustion technology and device make particle fully burn, improve burn-off rate; Reduce exhaust gas temperature, improve boiler thermal output; Reduce the secondary pollution of uncombusted particle simultaneously; The utility model embodiment moves automation: electric-control system regulates boiler feed water, fuel material loading, burning, ash discharge etc. automatically according to steam pressure, steam use amount in fire box temperature, stove, and boiler operatiopn is accurate, reduces artifical influence factor.
What the utility model embodiment mentioned all refers to biomass granule fuel, be characterized in: diameter is 8 ± 2mm, length is 4～5 times of its diameter, percentage of damage is less than 1.5%～2.0%, dry basis moisture content is less than 12%, content of ashes is less than 1.5%, and sulfur content and chlorinity are all less than 0.07%, and nitrogen content is less than 0.5%.
Claims (7)
1. a high-efficiency energy-saving biomass steam generator system, comprising: boiler body, its be provided with for biomass molding fuel burn therein heat release combustion chamber and be positioned at the water-steam system of top, described combustion chamber; Feeding system, it is connected that with described boiler body biomass molding fuel is sent in described combustion chamber and burnt; Be positioned at fire grate and the drawing mechanism of bottom, combustion chamber; The exhaust opening through water-steam system being communicated with combustion chamber; It is characterized in that: be also included in the inlet air plenum that fire grate below arranges, the secondary wind inleting tube arranging and inlet air plenum above fire grate; After exhaust opening hot flue gas out reclaims by smoke exhaust pipe, pass through successively water preheater and Secondary Air preheater, wherein, the outlet of Secondary Air preheater is connected air intake is heated with the secondary air chamber of combustion chamber; Water preheater is connected and makes there is certain temperature into water with the water inlet of boiler.
2. high-efficiency energy-saving biomass steam generator system according to claim 1, it is characterized in that: also comprise the feed arrangement being connected with feeding system, it comprises ground elevator, discharge nozzle, triple valve, storage bin, feed bin pipe and ground material bin, wherein, ground elevator is for promoting the biomass molding fuel in the material bin of ground, then pass through triple valve, discharge nozzle is delivered to storage bin, in addition, material in storage bin is by the valve control discharging of its bottom, described storage bin material is out through ground elevator, triple valve and feed bin pipe enter the hopper in the feeding system of boiler.
3. high-efficiency energy-saving biomass steam generator system according to claim 2, is characterized in that: on storage bin, be provided with control valve, load is controlled.
4. according to the high-efficiency energy-saving biomass steam generator system described in claim 2 or 3, it is characterized in that: storage bin bottom also comprises scrapper conveyor.
5. high-efficiency energy-saving biomass steam generator system according to claim 1, is characterized in that: also comprise that an air-introduced machine is connected with smoke exhaust pipe flue outlet.
6. high-efficiency energy-saving biomass steam generator system according to claim 1, is characterized in that: described combustion chamber height is 60cm.
7. high-efficiency energy-saving biomass steam generator system according to claim 1, it is characterized in that: also comprise electric-control system, measurement mechanism comprising steam pressure, fire box temperature and combustion chamber draft parameter is connected with PLC controller respectively, also comprise the frequency converter being connected with PLC controller, frequency converter is connected with feeding system, fire grate, air-introduced machine, secondary air machine and air blast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706975.7U CN203671587U (en) | 2013-11-11 | 2013-11-11 | Efficient energy-saving biomass boiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706975.7U CN203671587U (en) | 2013-11-11 | 2013-11-11 | Efficient energy-saving biomass boiler system |
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| CN203671587U true CN203671587U (en) | 2014-06-25 |
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| CN201320706975.7U Expired - Fee Related CN203671587U (en) | 2013-11-11 | 2013-11-11 | Efficient energy-saving biomass boiler system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644561A (en) * | 2013-11-11 | 2014-03-19 | 浙江中吉新能源有限公司 | High-efficiency energy-saving biomass boiler system |
| CN110107888A (en) * | 2019-06-06 | 2019-08-09 | 福建乾能工业设备科技有限公司 | A kind of uniform distribution biomass fuel combustion equipment and its combustion method |
-
2013
- 2013-11-11 CN CN201320706975.7U patent/CN203671587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644561A (en) * | 2013-11-11 | 2014-03-19 | 浙江中吉新能源有限公司 | High-efficiency energy-saving biomass boiler system |
| CN110107888A (en) * | 2019-06-06 | 2019-08-09 | 福建乾能工业设备科技有限公司 | A kind of uniform distribution biomass fuel combustion equipment and its combustion method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20161111 |