CN204345920U - A kind of biomass fuel thermal medium boiler - Google Patents
A kind of biomass fuel thermal medium boiler Download PDFInfo
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- CN204345920U CN204345920U CN201420667778.3U CN201420667778U CN204345920U CN 204345920 U CN204345920 U CN 204345920U CN 201420667778 U CN201420667778 U CN 201420667778U CN 204345920 U CN204345920 U CN 204345920U
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- flue
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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 utility model relates to a kind of vertical type biomass fuel heat medium boiler of jacketed, this device comprises split type vertical type biomass burner, waste heat boiler and flue, biomass burner adopts heat insulating construction, high temperature air preheater is provided with in flue, thermosistor is provided with outside flue, adopt Inner eycle heat carrier loop high efficiente callback fume afterheat, while effectively avoiding boiler coke phenomenon, biomass fuel thermal medium boiler economy can be made, high-efficiency operation, and effectively avoid the cold end corrosion of air preheater in flue, solve the problem of the coking of biomass fuel thermal medium boiler and waste heat recovery difficulty.
Description
Technical field
The utility model relates to a kind of thermal medium boiler of burning-used biologic mass fuel and supporting waste heat efficient utilization device, belongs to thermal medium boiler field of energy-saving technology.
Background technology
Current Biomass Energy Resources, usually used as the life in the countryside energy, directly uses in rural household cooking stove.There is two problems in this respect: one is that the Biomass Energy Resources that can be used as the energy fails fully to use; Two is that capacity usage ratio is extremely low.This makes the situation of vast rural area commercial energy anxiety can not get for a long time improving.According to estimates, in rural household cooking stove, the thermal efficiency of burning straw, fuel wood etc. on average only has about 14%, and a large amount of energy resources is not utilized effectively.What is more, and living beings directly in field burning, had both caused the significant wastage of the energy, and made a very bad impression again to environment, and caused haze weather.
Biomass solid formed fuel more and more causes the attention of people as the important way of biomass utilization, and its important technological parameters is as follows:
Density: 800 ~ 1100kg/m
3; Calorific value: 3600 ~ 4400Kcal/kg; Ash content: 5 ~ 20%; Moisture :≤14%.
Because biomass solid formed fuel is convenient to store and transport, maintain high, the easy ignition of living beings volatile matter, ash content and sulfur content is low, burning produces the advantages such as pollutant is less simultaneously, therefore can be used as a kind of rare, clean commercial fuel.It not only can be used as the fuel of Industrial Boiler, industrial furnace, can also be used as industrial chemicals and family's fuel, can bring huge economic and social benefit.
The special boiler of traditional biomass fuel heat carrier furnace to be a kind of with organic heat carrier be working media, usual employing biomass burner is arranged in the integral structure in boiler, the high-temperature flue gas heated organic heat carrier produced by biomass fuel combustion, for heating equipment provides required heat after organic heat carrier raised temperature, and the flue gas produced after fuel combustion is when chimney is discharged, temperature is generally at about 170 DEG C, have even up to 300 DEG C, both wasted heat, again thermal pollution was caused to environment.Meanwhile, owing to tar can be produced in integral biomass fuel boiler combustion process, easily coking phenomenon is produced.
200620030674.7,200820148936.9,200920091185.6,201120016031.8,201120190688.6, the multiple patent such as US20100275824A1, JP2010181145AI, EP2505916A2I provides multiple biomass burner and even heat recovery technology, but the waste heat high efficiente callback of its not mentioned back-end ductwork flue gas, or the organic efficiency of back-end ductwork fume afterheat is not high, and not mentioned solution tar problem.
Organic heat carrier furnace does not mostly carry out waste heat recovery or only increases air preheater recovery section fume afterheat.Part run is provided with the waste-heat recovery device of carrying vapour generator as heat pipe boiler etc., as ZL200420027889.4 provides a kind of waste heat recovering device for conduction oil furnace structural representation (as Fig. 1) of carrying vapour generator: comprising: body of heater 1, flue 2, steam generator 3, steam generator shell 31, steam generator drum 32, steam generator heat-transfer pipe 33, steam generator tube sheet 34, air preheater 4, the air inlet pipe 41 of air preheater, air-introduced machine 5, chimney 6.This technology can make heat-conducting oil furnace exhaust gas temperature be reduced to about 170 DEG C, and reclaims a certain amount of steam.
But, if the steam that organic heat carrier furnace applying unit produces without the need to waste heat recovery flow process, namely the use of such technology is very restricted, then only can increase air preheater recovery section fume afterheat, for avoiding the cold end corrosion of air preheater, usual more than 170 DEG C of the exhaust gas temperature of boiler, the overall thermal efficiency of boiler is still lower, does not meet energy-conservation and environmental requirement.
Therefore the fume afterheat of how reasonable Arrangement biomass fuel thermal medium boiler structure, high efficiente callback biomass fuel thermal medium boiler, effectively avoid coking, cold end corrosion phenomenon, and then the thermal efficiency improving whole system becomes the focus of this area research simultaneously.
Summary of the invention
The purpose of this utility model is the shortcoming solving prior art existence, a kind of split type biomass fuel thermal medium boiler is provided, to realize the fume afterheat of high efficiente callback biomass fuel thermal medium boiler, effectively avoid coking, cold end corrosion phenomenon simultaneously, reach energy-saving and cost-reducing object.
The purpose of this utility model is realized by following measures:
A kind of biomass fuel thermal medium boiler, this boiler comprises waste heat boiler 1, biomass burner 2, flue 9 and temperature end heat carrier closed circuit, it is characterized in that:
Described biomass burner 2 adopts split-type structural with waste heat boiler 1, and biomass burner 2 adopts structure that is vertical, inner lining refractory 22; Biomass fuel sends into biomass burner 2 through feeding fan 24, feed appliance 25, and with the high temperature air 20 sent here through air compartment, air distribution plate 23 fully mixed combustion, the high-temperature flue gas 15 of generation sends into waste heat boiler 1; The air sent of chuck blower fan 27 enters the burner hearth of biomass burner 2 through chuck 26, chuck wind furnace thorax entrance 28, uses as combustion-supporting Secondary Air.
Described waste heat boiler 1 also comprises the thermosistor 10 outside the high temperature air preheater 13 be arranged in flue 9, flue, and connecting line; Wherein, Inner eycle pipeline 12 is exported by hot oil pump 7 draws between waste heat boiler 1 heat carrier entrance point, or is drawn, through thermosistor 10, Inner eycle oil return pipeline 14 by waste heat boiler 1 heating medium outlet end, be back to gs-oil separator 5 or hot oil pump 7 inlet line, form Inner eycle loop; In addition, air blast is provided with before thermosistor, from air blast discharge air through thermosistor 10 heat up after (higher than flue gas acid dew point temperature), entering high temperature air preheater 13 again utilizes flue gas to heat up, Mist heat recovering, the hot-air 20 after high temperature air preheater 13 heats is sent into biomass burner 2 and is used as combustion air.Waste heat boiler 1 is provided with necessary ash hole.
Described temperature end heat carrier closed circuit comprises hot oil pump 7, heating equipment 3, gs-oil separator 5, filter 6 and connecting line, heat carrier is successively through hot oil pump 7, waste heat boiler 1, heating equipment 3, gs-oil separator 5, the filter 6 of pipeline connection, flow back to hot oil pump 7, form closed cycle.Heat carrier enters hot oil pump 7 again and is connected to form closed cycle by pipe-line system enter the heat of waste heat boiler 1 organism-absorbing matter fuel combustion generation after hot oil pump 7 pressurizes after after heating equipment 3, gs-oil separator 5, filter 6.
Described thermosistor 10 adopts indirect heat exchange mode with heat carrier, and the entrance point of tube side or shell side is connected with heat carrier Inner eycle pipeline 12, and the port of export is connected with heat carrier Inner eycle oil return pipeline 14; The entrance point of shell side or tube side is connected with air blast (11) air outlet, and the port of export is connected with the import of high temperature air preheater (13).
Described heat carrier Inner eycle loop is as follows: the high-temperature heat carrier after the heating that waste heat boiler 1 exports, thermosistor 10 is entered through heat carrier Inner eycle pipeline 12, heat carrier Inner eycle pipeline 12 outlet exports between the feed line of heating equipment 3 at hot oil pump 7, after reducing heat carrier temperature, gs-oil separator 5 or hot oil pump 7 inlet line is got back to by heat carrier Inner eycle oil return pipeline 14, after mixing with outer circulation heat carrier, again high-temperature heat carrier is sent after hot oil pump 7 connects the heating of feeding waste heat boiler 1 by pipe-line system, thus form heat carrier Inner eycle loop.
Described biomass burner 2 comprise biomass burner shell 21, in be lining in the refractory material 22 of shell, feeding fan 24, feed appliance 25, air distribution plate 23 and the air compartment supporting with air distribution plate, adopt vertical structure, and be provided with necessary ash discharging gear.
Described air distribution plate adopts dull and stereotyped or pyramidal structure.
The refractory material 22 being lining in shell in described adopts the heat-insulating material such as refractory brick, refractory concrete.
Described feed appliance 25 adopts spiral or step-by-step movement pay-off.
Described high temperature air preheater 13 adopts indirect heat exchange mode with flue gas, and the hot-air 20 after high temperature air preheater 13 heats is sent into biomass burner 2 and used as combustion air.
The heat exchanger tube of described high temperature air preheater 13 can adopt tubulation, finned tube, coiled pipe or spiral grooved tube.
Thermosistor 10 in the utility model adopts indirect heat exchange mode, can be the heat exchanger of shell-and-tube heat exchanger, plate type heat exchanger or other patterns.
Thermosistor 10 in the utility model can arrange one or more as required, adopts connection in series-parallel or series-parallel connection mode to connect.
The cold air that air blast is sent here by the thermosistor 10 in the utility model is heated above flue gas acid dew point temperature, then sends into high temperature air preheater 13 recovery waste heat residual heat from boiler fume, and thermosistor 10 is equivalent to the air preheater be arranged on outside flue.
Be provided with conventional flue gas discharge temperature regulation device, by controlling the means such as the aperture of thermosistor 10 control valve, the exhaust gas temperature of flue outlet can be made to be reduced to only higher than the flue gas acid dew point temperature of high temperature air preheater 13 wall, avoiding under the prerequisite condensed, reach the object utilizing fume waste heat to greatest extent, heat-conducting oil furnace energy economy, high thermal efficiency are run, reaches energy-saving and cost-reducing object.
The utility model compared to existing technology tool has the following advantages:
1, this device adopts split type vertical type biomass burner and waste heat boiler structure, utilize jacketed, the biomass burner of liner heat-insulating material constructs hot environment, the tar that biomass fuel is produced Thorough combustion in hot environment, effectively avoids the coking phenomenon of boiler.
2, the chuck blower fan arranged and chuck can make biomass burner liner heat insulating construction simplify and overheavy firing, reduce the temperature of biomass burner outer surface simultaneously.
3, this device at original thermal medium boiler system a set of heat carrier Inner eycle loop, utilize the heat carrier in Inner eycle loop by thermosistor preheated air, be heated above acid dew-point temperature, send into high temperature air preheater 13 again and reclaim fume afterheat in flue, both avoid the cold end corrosion of high temperature air preheater, take full advantage of flue residue heat again.In addition, the air of preheating sends into biomass burner again as combustion air, contributes to the Thorough combustion of biomass fuel.
4, retracting device of the present utility model, after recovery waste heat, smog discharge temperature, at about 130 DEG C, meets energy-conservation and environmental requirement.
Accompanying drawing explanation
Fig. 1 is the waste heat recovering device for conduction oil furnace structural representation of the carrying vapour generator of prior art.
Fig. 1: 1-body of heater, 2-flue, 3-steam generator, 31-steam generator shell, 32-steam generator drum, 33-steam generator heat-transfer pipe, 34-steam generator tube sheet, 4-air preheater, the air inlet pipe of 41-air preheater, 5-air-introduced machine, 6-chimney.
Fig. 2 is a kind of biomass fuel thermal medium boiler Structure and Process schematic diagram of the present utility model.
In Fig. 2,1-waste heat boiler, 2-biomass burner, 3-heating equipment, 4-high-order expansion slot, 5-gs-oil separator, 6-filter, 7-hot oil pump, 8-low level oil storage tank, 9-flue, 10-thermosistor, 11-air blast, 12-Inner eycle pipeline, 13-high temperature air preheater, 14-Inner eycle pipeline, 15-high-temperature flue gas, 16-low-temperature flue gas, 20-hot-air, 21-biomass burner shell, 22-refractory material, 23-air distribution plate, 24-feeding fan, 25-feed appliance, 26-chuck, 27-chuck blower fan, 28-chuck wind enters stockhole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1:
As shown in Figure 2, a kind of biomass fuel thermal medium boiler Structure and Process schematic diagram of the present utility model.This boiler comprises waste heat boiler 1, vertical type biomass burner 2, flue 9 and temperature end heat carrier closed circuit, is provided with hot oil pump 7 and gs-oil separator 5 in temperature end heat carrier closed circuit.This retracting device comprises the thermosistor 10 outside the high temperature air preheater 13 be arranged in flue 9, flue, and connecting line; Wherein, Inner eycle pipeline 12 is exported by hot oil pump 7 draws between heat-conducting oil furnace 1 heat conductive oil inlet end, or is drawn, through thermosistor 10, Inner eycle pipeline 14 by the waste heat boiler 1 conduction oil port of export, be back to gs-oil separator 5 or hot oil pump 7 inlet line, form Inner eycle loop; From air blast discharge air through thermosistor 10 heat up after (higher than flue gas acid dew point temperature), entering high temperature air preheater 13 again utilizes flue gas to heat up, Mist heat recovering, the high temperature air after high temperature air preheater 13 heats is sent into biomass burner 2 and is used as combustion air.
Described temperature end heat carrier closed circuit comprises hot oil pump 7, heating equipment 3, gs-oil separator 5, filter 6 and connecting line, heat carrier is successively through hot oil pump 7, waste heat boiler 1, heating equipment 3, gs-oil separator 5, the filter 6 of pipeline connection, flow back to hot oil pump 7, form closed cycle.Heat carrier enters after waste heat boiler 1 absorbs the heat of high-temperature flue gas 15 after hot oil pump 7 pressurizes, and enters hot oil pump 7 again and be connected to form closed cycle by pipe-line system after heating equipment 3, gs-oil separator 5, filter 6.
High-temperature heat carrier after the heating that waste heat boiler 1 exports, thermosistor 10 is entered through heat carrier Inner eycle pipeline 12, heat carrier Inner eycle pipeline 12 outlet exports between the feed line of heating equipment 3 at hot oil pump 7, after reducing heat carrier temperature, gs-oil separator 5 or hot oil pump 7 inlet line is got back to by heat carrier Inner eycle pipeline 14, after mixing with outer circulation heat carrier, again high-temperature heat carrier is sent after hot oil pump 7 connects the heating of feeding waste heat boiler 1 by pipe-line system, thus form heat carrier Inner eycle loop.
Described thermosistor 10 adopts indirect heat exchange mode with heat carrier, and tube side (or shell side) entrance point is connected with heat carrier Inner eycle pipeline 12, and the port of export is connected with heat carrier Inner eycle pipeline 14.The entrance point of shell side (or tube side) is connected with air blast (11) air outlet, and the port of export is connected with the import of high temperature air preheater (13).Namely the Inner eycle loop of heat carrier is utilized, the air that preheating drum blower fan is discharged, avoids the contingent cold end corrosion of high temperature air preheater 13, then absorbs fume afterheat by high temperature air preheater 13, high temperature air after heating, as the combustion air of biomass burner 2, reaches energy-saving and cost-reducing object.
Thermosistor 10 adopts indirect heat exchange mode, can be pipe heat exchanger.
High temperature air preheater 13 and flue gas adopt indirect heat exchange mode, and the hot-air 15 after high temperature air preheater 13 heats is sent into biomass burner 2 and used as combustion air.The heat exchanger tube of high temperature air preheater 13 adopts finned tube.
The cold air that air blast is sent here by the thermosistor 10 in the utility model is heated above flue gas acid dew point temperature, then sends into high temperature air preheater 13 recovery boiler fume afterheat, and thermosistor 10 is equivalent to the air preheater be arranged on outside flue.
Be provided with conventional flue gas discharge temperature adjusting device, by regulating the aperture of thermosistor 10 control valve, control the flow of the heat carrier of thermosistor 10, the exhaust gas temperature of flue outlet can be made to be reduced to only higher than the flue gas acid dew point temperature of high temperature air preheater 13 wall, avoiding under the prerequisite condensed, reach the object utilizing fume waste heat to greatest extent, boiler energy economy, high thermal efficiency are run, reaches energy-saving and cost-reducing object.
Embodiment 2:
Another kind of embodiment of the present utility model is: heat carrier Inner eycle pipeline 12 outlet exports between waste heat boiler 1 inlet line at hot oil pump 7, and all the other performances are with embodiment 1.
Although the utility model with preferred embodiment openly as above; but they are not for limiting the present invention, being anyly familiar with this those skilled in the art, not departing from the spirit and scope of the utility model; from when making various changes or retouch, belong to the protection domain of the present invention equally.What therefore protection domain of the present utility model should define with the claim of the application is as the criterion.
Claims (4)
1. a biomass fuel thermal medium boiler, this boiler comprises waste heat boiler (1), biomass burner (2), flue (9) and temperature end heat carrier closed circuit, it is characterized in that:
Described biomass burner (2) and waste heat boiler (1) adopt split-type structural, and biomass burner (2) adopts structure that is vertical, inner lining refractory (22); Biomass fuel sends into biomass burner (2) through feeding fan (24), feed appliance (25), and with the high temperature air (20) sent here through air compartment, air distribution plate (23) fully mixed combustion, the high-temperature flue gas (15) of generation sends into waste heat boiler (1); The air sent of chuck blower fan (27) enters the burner hearth of biomass burner (2) through chuck (26), chuck wind furnace thorax entrance (28), uses as combustion-supporting Secondary Air;
Described waste heat boiler (1) also comprises thermosistor (10) outside the high temperature air preheater (13) be arranged in flue (9), flue and connecting line; Wherein, Inner eycle pipeline (12) is exported by hot oil pump (7) and draws between waste heat boiler (1) heat carrier entrance point, or drawn by waste heat boiler (1) heating medium outlet end, successively through thermosistor (10), Inner eycle pipeline (14), be back to gs-oil separator (5) or hot oil pump (7) inlet line, form Inner eycle loop; In addition, before thermosistor, be provided with air blast, from air blast discharge air through thermosistor (10), enter high temperature air preheater (13), then send into biomass burner (2).
2. boiler according to claim 1, it is characterized in that: described temperature end heat carrier closed circuit comprises hot oil pump (7), heating equipment (3), gs-oil separator (5), filter (6) and connecting line, conduction oil is successively through hot oil pump (7), waste heat boiler (1), heating equipment (3), gs-oil separator (5), the filter (6) of pipeline connection, flow back to hot oil pump (7), form closed cycle.
3. boiler according to claim 1 and 2, it is characterized in that: the air in described thermosistor (10) and heat carrier adopt indirect heat exchange mode, the entrance point of tube side or shell side is connected with heat carrier Inner eycle pipeline (12) and Inner eycle pipeline (14) respectively with the port of export; The entrance point of shell side or tube side is connected with air blast (11) air outlet, and the port of export is connected with the import of high temperature air preheater (13).
4. boiler according to claim 3, is characterized in that: described thermosistor (10) is shell-and-tube heat exchanger or plate type heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420667778.3U CN204345920U (en) | 2014-11-10 | 2014-11-10 | A kind of biomass fuel thermal medium boiler |
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| CN201420667778.3U CN204345920U (en) | 2014-11-10 | 2014-11-10 | A kind of biomass fuel thermal medium boiler |
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| CN204345920U true CN204345920U (en) | 2015-05-20 |
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| CN201420667778.3U Active CN204345920U (en) | 2014-11-10 | 2014-11-10 | A kind of biomass fuel thermal medium boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413562A (en) * | 2020-10-28 | 2021-02-26 | 重庆富燃科技股份有限公司 | Device and method for protecting water-cooled wall of boiler by introducing flue gas at tail of boiler |
-
2014
- 2014-11-10 CN CN201420667778.3U patent/CN204345920U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413562A (en) * | 2020-10-28 | 2021-02-26 | 重庆富燃科技股份有限公司 | Device and method for protecting water-cooled wall of boiler by introducing flue gas at tail of boiler |
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