CN203323118U - Air-exhaust type coal powder boiler - Google Patents
Air-exhaust type coal powder boiler Download PDFInfo
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- CN203323118U CN203323118U CN2013200280376U CN201320028037U CN203323118U CN 203323118 U CN203323118 U CN 203323118U CN 2013200280376 U CN2013200280376 U CN 2013200280376U CN 201320028037 U CN201320028037 U CN 201320028037U CN 203323118 U CN203323118 U CN 203323118U
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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
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Abstract
The utility model discloses an air-exhaust type coal powder boiler which comprises a boiler body in which a furnace hearth is defined, a heat accumulation type rotary reversing heater, a smoke channel, an air passageway, a high-temperature air-exhaust passageway and an air-exhaust control unit, wherein the inlet end of the smoke channel is communicated with the furnace hearth, and the outlet end of the smoke channel is communicated with the heat accumulation type rotary reversing heater so as to feed smoke from the furnace hearth into at least one of a pair of accommodating parts so that the smoke exchanges heat with a heat carrier accommodated in the accommodating part; a plurality of superheaters are arranged in the smoke channel; the air passageway is used for feeding air into at least the other one of the pair of accommodating parts so that a heat carrier accommodated in the accommodating part exchanges heat with the air; one end of the high-temperature air-exhaust passageway is communicated with one end (facing the furnace hearth) of the smoke channel, and the other end of the high-temperature air-exhaust passageway is communicated with the outlet end of the smoke channel; the air-exhaust control unit is used for controlling a first smoke amount supplied by the high-temperature air-exhaust passageway. According to the air-exhaust type coal powder boiler, combustion-supporting air entering the furnace hearth can be fully preheated, so that coal can be stably and fully combusted.
Description
Technical field
The utility model relates to the industrial technology field, but especially relates to a kind of bleeder pulverized-coal fired boiler.
Background technology
At present, China's pulverized-coal fired boiler has brown coal, jet coal, dross coal, bottle coal, meager coal and a small amount of anthracite with coal, wherein the consumption maximum of higher brown coal, jet coal, dross coal with fugitive constituent.China's anthracite reserves are abundant, account for 19% left and right of total coal reserves, but the anthracite fugitive constituent low, be difficult for the characteristic such as after-flame, there are the problems such as energy resource system efficiency is on the low side, the product of thermal coal is lower, disposal of pollutants is more serious in it in utilizing process.The W flame boiler is the main force's type of furnace that uses low-volatite coal, and it has solved stability and the reliability of utilizing the operation of low volatile generating large-sized boiler substantially, but still has the problems such as combustion efficiency is poor.For Low Volatilization Coals needs sufficient air, fully meets the needed oxygen amount of combustion process.Simultaneously, the low volatile coal igniting temperatures such as anthracite, meager coal are high, and igniting and to realize stablizing coal dust smooth combustion more difficult makes its range of application limited.
For igniting and the flameholding that solves low-volatite coal, adopt high temperature air to light the low-volatite coal such as anthracite, meager coal and can effectively solve coal powder point combustion and smooth combustion problem, make the energy obtain rationally, take full advantage of.But, existing pulverized-coal fired boiler adopts the metal-air preheater to carry out the smoke pre-heating recovery, the air that the preheating coal dust is required, be subject to the restriction of this body structure of metallic recuperator and material, flue gas need be reduced to below 500 ℃ and carry out pre-recuperation of heat again, energy-saving effect is poor, and preheated air temperature is lower, usually can only reach 300～400 ℃.In addition, in the cold end corrosion problem that also exists in service of for example metal corrugated plate rotary regenerative air preheater, and, because the circulation of gas is narrow, be easy to cause the problems such as dust stratification and stifled ash.
The utility model content
The utility model is intended at least solve one of technical problem existed in prior art.For this reason, but a purpose of the present utility model is to propose the high and controlled bleeder pulverized-coal fired boiler of a kind of air preheating temperature.
But, according to bleeder pulverized-coal fired boiler of the present utility model, comprising: boiler body is limited with burner hearth in described boiler body; Heat accumulating type rotation commutation heater, described heat accumulating type rotation commutation heater comprises: the heat exchanger main body; Drive unit, described drive unit is for driving described heat exchanger main body around its central axis rotation; Separator, described separator is arranged in described heat exchanger main body along the direction of described central axis, and described heat exchanger body portion is divided into at least one pair of holding portion, and described every pair of holding portion becomes radially to be oppositely arranged with respect to described central axis; Heat carrier, described heat carrier is contained in respectively during described accommodation section divides, and described heat carrier is formed by nonmetal solid material; Exhaust gases passes, the arrival end of described exhaust gases passes is connected with described burner hearth, and the port of export is connected with described heat accumulating type rotation commutation heater, with the flue gas by producing in burner hearth pass in dividing one of at least described paired described accommodation section and with the described heat carrier heat exchange of wherein holding, be provided with a plurality of superheaters in described exhaust gases passes; And air flue, described air flue is at least passing into air in another that described paired described accommodation section divides, so that the described heat carrier wherein held and described air carry out heat exchange; The high temperature path of bleeding, a bleed end of path of described high temperature is connected with the end towards described burner hearth of described exhaust gases passes, and the bleed other end of path of described high temperature is connected with the described port of export of described exhaust gases passes; And the control module of bleeding, the described control module of bleeding is for controlling via described high temperature the first exhaust gas volumn that path supplies with of bleeding.
But according to bleeder pulverized-coal fired boiler of the present utility model, by heat accumulating type rotation commutation heater is set, this heat accumulating type rotation commutation heater can carry out limit recovery by the fume afterheat up to 1200 ℃ by temperature, thereby the combustion air that will enter burner hearth carries out abundant preheating, and then make the low-volatite coal such as anthracite, meager coal can in boiler, be stablized, burn fully.
In addition, but also can there is following additional technical feature according to bleeder pulverized-coal fired boiler of the present utility model:
According to an embodiment of the present utility model, but described bleeder pulverized-coal fired boiler further comprises: at least one cryogenic pumping path, at least one in described exhaust gases passes part between one end of described cryogenic pumping path and described a plurality of superheaters is connected, its other end is connected with the described port of export of described exhaust gases passes, and the wherein said control module of bleeding is for controlling the second exhaust gas volumn of supplying with via described at least one cryogenic pumping path.Thus, by the cryogenic pumping path is set, can be bled from the different parts of pulverized-coal fired boiler, thus can be according to the actual requirements, and the rate of air sucked in required of control flue gas and temperature are to meet the different requirements of pulverized-coal fired boiler to air preheating temperature.
Alternatively, described heat carrier has coccoid, sheet or cavernous structure.
Alternatively, at least one in anthracite, meager coal of described coal dust formed.
Alternatively, the described control module of bleeding comprises electronic or Pneumatic high temperature smoke regulating valve, and described high-temperature flue gas control valve is arranged on described high temperature and bleeds on path.Thus, by the high-temperature flue gas control valve is set, can regulate the bleed exhaust gas volumn of the high-temperature flue gas in path of high temperature.
According to an embodiment of the present utility model, the described control module of bleeding further comprises: electronic or Pneumatic low temperature smoke regulating valve, described low-temperature flue gas control valve is arranged on described at least one cryogenic pumping path.Thus, by the low-temperature flue gas control valve being set, the exhaust gas volumn that can regulate the low-temperature flue gas in the cryogenic pumping path.
Alternatively, the described control module of bleeding is controlled at least one in described high-temperature flue gas control valve and described low-temperature flue gas control valve, so that the temperature of the described air in the exit of described air flue is 400-1000 ℃.
According to an embodiment of the present utility model, from the described arrival end of described exhaust gases passes, towards the described port of export of described exhaust gases passes, be disposed with pendant superheater, enclosure wall superheater.
According to an embodiment of the present utility model, in the described exhaust gases passes of the described port of export near described exhaust gases passes, be provided with economizer.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
But Fig. 1 is the schematic diagram according to the bleeder pulverized-coal fired boiler of an embodiment of the utility model.
The specific embodiment
Below describe embodiment of the present utility model in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
Below with reference to Fig. 1, but the bleeder pulverized-coal fired boiler 100 according to the utility model embodiment is described.
As shown in Figure 1, but according to the bleeder pulverized-coal fired boiler 100 of the utility model embodiment, comprise: boiler body 1, heat accumulating type rotation commutation heater 2, exhaust gases passes 3, air flue 4, high temperature bleed path 5 and the control module 51 of bleeding.
Heat accumulating type rotation commutation heater 2 is for by high-temperature flue gas with treat that preheated air carries out heat exchange, thereby makes the temperature for the treatment of preheated air be elevated to certain certain value.Heat accumulating type rotation commutation heater 2 comprises: heat exchanger main body 21, drive unit, separator 22 and heat carrier.Wherein, drive unit is for driving heat exchanger main body 21 around its central axis rotation.Separator 22 is arranged in heat exchanger main body 21 along the direction of central axis, and heat exchanger main body 21 is separated into at least one pair of holding portion, and every pair of holding portion becomes radially to be oppositely arranged with respect to central axis.Heat carrier is contained in respectively in holding portion, and heat carrier is formed by nonmetal solid material.
In one of them example of the present utility model, heat exchanger main body 21 can form the cylinder of hollow, separator 22 can roughly be plate shape, this compartment extends along the direction of heat exchanger main body 21 cener lines, thereby heat exchanger main body 21 is separated into to a pair of holding portion, heat carrier is located at respectively in two holding portions, heat carrier can be made by nonmetal solid material, flue gas and treat that preheated air passes into respectively in two holding portions, then drive 21 rotations of heat exchanger main body by drive unit, flue gas and carry out heat exchange with the heat carrier in the holding portion at its place, treat preheated air and carry out heat exchange with the heat carrier in the holding portion at its place, treat that preheated air temperature raises thereby make.
Certainly, the utility model is not limited to this, and in other examples of the present utility model, separator 22 also can be separated into heat exchanger main body 21 two pairs, three pairs even multipair holding portions.
In existing gas converting heat system, flue gas is can not be reduced to below 130 ℃ in the outlet temperature by after this gas heat exchanger, because this can cause sulfuric acid to be separated out, thereby causes the heavy corrosion of the parts to being manufactured by metal in this gas heat exchanger.But, in above-mentioned heat accumulating type rotation commutation heater 2 of the present utility model (for the high-temperature flue gas of for example sulfur-bearing), due to heat carrier by for example SiC, the nonmetal solid material of pottery etc. forms, thereby the sulphur of need not worrying is 130 ℃ of corrosion problems that exist dew point to cause, and can be reduced to the temperature under the dew point of sulphur to the outlet temperature of high-temperature flue gas, thereby farthest carry out heat exchange, according to an embodiment of the present utility model, the outlet temperature that described high-temperature flue gas leaves described gas heat exchanger is less than 130 ℃, further, the outlet temperature that described high-temperature flue gas leaves described gas heat exchanger is less than 70 degree.This temperature is in the cards hardly in traditional gas converting heat system.In addition, outlet temperature is being reduced under the temperature of dew point, the water vapour condensation is liquid water, has discharged a large amount of latent heat (absorb when liquid water becomes heat that the water vapour of 100 ℃ absorbs and is equivalent to water and is increased to 100 ℃ from 0 ℃ from 100 ℃ heat 3 times).Because heat carrier is formed by nonmetal solid material, so after sulphur deposits to a certain degree, can continue use to the heat carrier cleaning of holding in this holding portion, thereby reduce the problem of the cost increase that in traditional gas converting heat system, existing parts replacement causes.In addition, according to the utility model people, use the generally acknowledged computational methods in this field to calculate, in the tail gas heat transfer process of for example burning boiler, 10 ℃ of the every reductions of outlet temperature, the efficiency of whole boiler can improve 0.5%, and the latent heat discharged has been equivalent to improve 1.5% of whole boiler efficiency, thereby when flue-gas temperature for example is reduced to 70 ℃, the efficiency of whole boiler has improved 4.5% or more (0.5%X6+1.5), thereby a large amount of coal burnings in boiler have been saved, enlarged the scope of application of coal simultaneously, can reduce the grade of used coal, reduced further production cost.
Wherein, be limited with burner hearth 11 in boiler body 1.The arrival end of exhaust gases passes 3 is connected with burner hearth 11, and the port of export of exhaust gases passes 3 is connected with heat accumulating type rotation commutation heater 2, with the flue gas by burner hearth 11 interior generations, pass in the holding portion of at least paired heat accumulating type rotation commutation heater 2, and with holding portion in the heat carrier heat exchange held, be provided with a plurality of superheaters in exhaust gases passes 3.Air flue 4 is in another of the holding portion that air passed into at least paired heat accumulating type rotation commutation heater 2, so that the heat carrier held in holding portion and air carry out heat exchange.A bleed end of path 5 of high temperature is connected with the end towards burner hearth 11 of exhaust gases passes 3, and the bleed other end of path 5 of high temperature is connected with the port of export of exhaust gases passes 3.Bleed control module 51 for controlling via high temperature the first exhaust gas volumn that path 5 supplies with of bleeding.
In the following description, rotate counterclockwise with heat exchanger main body 21, and flue gas passes in heat exchanger main body 21 along the right side of central axis, treat that preheated air passes into heat exchanger main body 21 along the left side of central axis and describes for example.
As shown in Figure 1, limit burner hearth 11 in boiler body 1 with for holding coal dust, one end of exhaust gases passes 3 communicates with burner hearth 11, its other end communicates with heat accumulating type rotation commutation heater 2, take the flue gas of burner hearth 11 interior generations is passed in the first holding portion 211 of heat accumulating type rotation commutation heater 2 (for example commutate for the rotation of the heat accumulating type shown in Fig. 1 the right side of heater 2), in the second holding portion 212 of heat accumulating type rotation commutation heater 2, (for example for the heat accumulating type shown in Fig. 1, rotating the left side of commutation heater 2) treats preheated air for passing into, in heat exchanger main body 21 during in rotation status not, heat carrier heat exchange in flue gas and the first holding portion 211 is so that the temperature rising of heat carrier, after heat carrier absorbs heat, heat exchanger main body 21 is rotated counterclockwise, the first holding portion 211 rotates to the left side of central axis, the second holding portion 212 rotates to the right side of central axis, rotate to heat carrier in first holding portion 211 in left side and carry out heat exchange with air to be heated so that be with and add the hot air temperature liter, simultaneously, flue gas is heated the heat carrier in the second holding portion 212 that rotates to right side.
Heat exchanger main body 21 continues to rotate counterclockwise, now the first holding portion 211 is rotated the right side of getting back to central axis, the second holding portion 212 is rotated the left side of getting back to central axis, the second holding portion 212 interior heat carrier and the air to be heated that rotate back to left side carry out heat exchange, flue gas is heated the heat carrier in the first holding portion 211 that rotates back to right side, so be cycled to repeat, to complete the heating to air to be heated.
Because the flue-gas temperature on burner hearth 11 tops is higher, therefore a bleed end of path 5 of high temperature can communicate with burner hearth 11 tops, its other end is connected high-temperature flue gas to be passed in heat accumulating type rotation commutation heater 2 with the port of export of exhaust gases passes 3, the control module 51 of bleeding is located at high temperature and bleeds on path 5 to control via high temperature the first exhaust gas volumn that path 5 supplies with of bleeding.
But the bleeder pulverized-coal fired boiler 100 according to the utility model embodiment, by heat accumulating type rotation commutation heater 2 is set, this heat accumulating type rotation commutation heater 2 can carry out limit recovery by the fume afterheat up to 1200 ℃ by temperature, thereby the combustion air that will enter burner hearth 11 carries out abundant preheating, and then make the low-volatite coal such as anthracite, meager coal can in boiler, be stablized, burn fully.
According to an embodiment of the present utility model, but bleeder pulverized-coal fired boiler 100 further comprises: at least one cryogenic pumping path 6, at least one in exhaust gases passes 3 parts between one end of cryogenic pumping path 6 and a plurality of superheaters is connected, its other end is connected with the port of export of exhaust gases passes 3, and the control module 51 of wherein bleeding is for controlling the second exhaust gas volumn of supplying with via at least one cryogenic pumping path 6.Thus, by cryogenic pumping path 6 is set, can be bled from the different parts of pulverized-coal fired boiler, thus can be according to the actual requirements, and the rate of air sucked in required of control flue gas and temperature are to meet the different requirements of pulverized-coal fired boiler to air preheating temperature.Be understandable that, the quantity of cryogenic pumping path 6 can be according to the actual requirement setting, to meet better actual requirement.
For example, in the example of Fig. 1, cryogenic pumping path 6 is two, one end of a cryogenic pumping path 6 is located between enclosure wall superheater 8 and back-end ductwork superheater 9, its other end communicates with the port of export of exhaust gases passes 3, one end of another cryogenic pumping path 6 is located between back-end ductwork superheater 9 and economizer 10, its other end communicates with the port of export of exhaust gases passes 3, and the control module 51 of bleeding is two, and two control modules 51 of bleeding are located at respectively on two cryogenic pumping paths 6.
Alternatively, heat carrier has coccoid, sheet or cavernous structure.Thus, can by enlarge active surface strengthen flue gas and treat preheated air and heat carrier between heat exchange efficiency.
Alternatively, at least one in anthracite, meager coal of coal dust formed.Be understandable that, coal dust can also be brown coal, jet coal, dross coal, bottle coal etc.
In an embodiment of the present utility model, the control module 51 of bleeding comprises electronic or Pneumatic high temperature smoke regulating valve, and the high-temperature flue gas control valve is arranged on high temperature and bleeds on path 5.That is to say, the control module 51 of bleeding can be the electric high-temperature smoke regulating valve, or the Pneumatic high temperature smoke regulating valve.Thus, by the high-temperature flue gas control valve is set, can regulate the bleed exhaust gas volumn of the high-temperature flue gas in path 5 of high temperature.
In an embodiment of the present utility model, the control module 51 of bleeding further comprises: electronic or Pneumatic low temperature smoke regulating valve, the low-temperature flue gas control valve is arranged at least one cryogenic pumping path 6.That is to say, the control module 51 of bleeding can be electronic low-temperature flue gas control valve, or Pneumatic low temperature smoke regulating valve, when but bleeder pulverized-coal fired boiler 100 comprises a plurality of cryogenic pumping path 6, the low-temperature flue gas control valve can be one and a low-temperature flue gas control valve and is located on one of them of a plurality of cryogenic pumping paths 6, or the number of low-temperature flue gas control valve is less than the number of cryogenic pumping path 6, the low-temperature flue gas control valve is located on the some of them of a plurality of cryogenic pumping paths 6, or the number of low-temperature flue gas control valve equals the number of cryogenic pumping path 6, a plurality of low-temperature flue gas control valves are located at respectively on a plurality of cryogenic pumping paths 6.Thus, by the low-temperature flue gas control valve being set, the exhaust gas volumn that can regulate the low-temperature flue gas in cryogenic pumping path 6.
Alternatively, at least one that the control module 51 of bleeding is controlled in high-temperature flue gas control valve and low-temperature flue gas control valve, so that the temperature of the air in the exit of air flue 4 is 400-1000 ℃.That is to say, the control module 51 of bleeding also can have control device (scheming not shown), the control module 51 of bleeding can only be controlled the high-temperature flue gas control valve by control device, or only control the low-temperature flue gas control valve, as long as guarantee to treat that the temperature that preheated air passes in burner hearth 11 is 400-1000 ℃.
In an embodiment of the present utility model, from the arrival end of exhaust gases passes 3, towards the port of export of exhaust gases passes 3, be disposed with pendant superheater 7, enclosure wall superheater 8.In the example of Fig. 1, in the connectivity part of burner hearth 11 and exhaust gases passes 3, be provided with successively pendant superheater 7, enclosure wall superheater 8.
In an embodiment of the present utility model, in the exhaust gases passes 3 of the port of export near exhaust gases passes 3, be provided with economizer 10.
Adopt heat accumulating type rotation commutation heater 2, alternately switch flue gas, air, make it the heat carrier of flowing through, can reclaim to greatest extent the physical thermal of high-temperature flue gas, thereby can significantly save the energy, improve the thermal efficiency of Thermal Equipment.Treat that due to what enter burner hearth 11 preheated air temperature is higher, burn by tissue, expanded the flame combustion zone, flame edge almost expands to burner hearth 11 borders, makes uniformity of temperature profile in stove; The use of heat accumulating type rotation commutation heater 2, make low-calorie fuel, low-volatile fuel can obtain stable, continuous burning by the air of high temperature preheating, improves the burn-off rate of fuel, expanded the range of application of low-volatility fuel.The problems such as energy resource system efficiency product on the low side, thermal coal in the low-volatite coal application processes such as anthracite, meager coal is lower, disposal of pollutants is more serious have fundamentally been solved; The stability and the integrity problem that utilize the operation of low volatile generating large-sized boiler have been solved simultaneously.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present utility model and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (9)
1. but a bleeder pulverized-coal fired boiler, is characterized in that, comprising:
Boiler body, be limited with burner hearth in described boiler body;
Heat accumulating type rotation commutation heater, described heat accumulating type rotation commutation heater comprises:
The heat exchanger main body;
Drive unit, described drive unit is for driving described heat exchanger main body around its central axis rotation;
Separator, described separator is arranged in described heat exchanger main body along the direction of described central axis, and described heat exchanger body portion is divided into at least one pair of holding portion, and described every pair of holding portion becomes radially to be oppositely arranged with respect to described central axis;
Heat carrier, described heat carrier is contained in respectively during described accommodation section divides, and described heat carrier is formed by nonmetal solid material;
Exhaust gases passes, the arrival end of described exhaust gases passes is connected with described burner hearth, and the port of export is connected with described heat accumulating type rotation commutation heater, with the flue gas by producing in burner hearth pass in dividing one of at least described paired described accommodation section and with the described heat carrier heat exchange of wherein holding, be provided with a plurality of superheaters in described exhaust gases passes; And
Air flue, described air flue is at least passing into air in another that described paired described accommodation section divides, so that the described heat carrier wherein held and described air carry out heat exchange;
The high temperature path of bleeding, a bleed end of path of described high temperature is connected with the end towards described burner hearth of described exhaust gases passes, and the bleed other end of path of described high temperature is connected with the described port of export of described exhaust gases passes; And
The control module of bleeding, the described control module of bleeding is for controlling via described high temperature the first exhaust gas volumn that path supplies with of bleeding.
2. but bleeder pulverized-coal fired boiler according to claim 1, is characterized in that, further comprises:
At least one cryogenic pumping path, at least one in the described exhaust gases passes part between an end of described cryogenic pumping path and described a plurality of superheaters is connected, and its other end is connected with the described port of export of described exhaust gases passes, wherein
The described control module of bleeding is for controlling the second exhaust gas volumn of supplying with via described at least one cryogenic pumping path.
3., but bleeder pulverized-coal fired boiler according to claim 1, is characterized in that, that described heat carrier has is coccoid, sheet or cavernous structure.
4., but bleeder pulverized-coal fired boiler according to claim 1, is characterized in that, at least one in anthracite, meager coal of described coal dust formed.
5. but bleeder pulverized-coal fired boiler according to claim 2, is characterized in that, the described control module of bleeding comprises electronic or Pneumatic high temperature smoke regulating valve, and described high-temperature flue gas control valve is arranged on described high temperature and bleeds on path.
6. but bleeder pulverized-coal fired boiler according to claim 5, is characterized in that, the described control module of bleeding further comprises: electronic or Pneumatic low temperature smoke regulating valve, described low-temperature flue gas control valve is arranged on described at least one cryogenic pumping path.
7. but bleeder pulverized-coal fired boiler according to claim 6, it is characterized in that, the described control module of bleeding is controlled at least one in described high-temperature flue gas control valve and described low-temperature flue gas control valve, so that the temperature of the described air in the exit of described air flue is 400-1000 ℃.
8., but bleeder pulverized-coal fired boiler according to claim 1, is characterized in that, from the described arrival end of described exhaust gases passes, towards the described port of export of described exhaust gases passes, be disposed with pendant superheater, enclosure wall superheater.
9., but bleeder pulverized-coal fired boiler according to claim 1, is characterized in that, in the described exhaust gases passes of the described port of export near described exhaust gases passes, be provided with economizer.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200280376U CN203323118U (en) | 2013-01-18 | 2013-01-18 | Air-exhaust type coal powder boiler |
| PCT/CN2013/075703 WO2014110885A1 (en) | 2013-01-18 | 2013-05-16 | Gas-extractable pulverized coal boiler |
| RU2015133247A RU2612682C2 (en) | 2013-01-18 | 2013-05-16 | Boiler operating on gasifiable pulverised coal |
| AU2013374018A AU2013374018B2 (en) | 2013-01-18 | 2013-05-16 | Gas-extractable pulverized coal boiler |
| ZA2015/05206A ZA201505206B (en) | 2013-01-18 | 2015-07-20 | Gas-extractable pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200280376U CN203323118U (en) | 2013-01-18 | 2013-01-18 | Air-exhaust type coal powder boiler |
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| Publication Number | Publication Date |
|---|---|
| CN203323118U true CN203323118U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013200280376U Withdrawn - After Issue CN203323118U (en) | 2013-01-18 | 2013-01-18 | Air-exhaust type coal powder boiler |
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| CN (1) | CN203323118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672869A (en) * | 2013-01-18 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Pulverized coal boiler capable of exhausting smoke |
-
2013
- 2013-01-18 CN CN2013200280376U patent/CN203323118U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672869A (en) * | 2013-01-18 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Pulverized coal boiler capable of exhausting smoke |
| CN103672869B (en) * | 2013-01-18 | 2016-07-06 | 北京神雾环境能源科技集团股份有限公司 | Can bleeder pulverized-coal fired boiler |
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