CN102620279A - Full-film wall biomass boiler manufacturing method and full-film wall biomass boiler - Google Patents
Full-film wall biomass boiler manufacturing method and full-film wall biomass boiler Download PDFInfo
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- CN102620279A CN102620279A CN2012100310865A CN201210031086A CN102620279A CN 102620279 A CN102620279 A CN 102620279A CN 2012100310865 A CN2012100310865 A CN 2012100310865A CN 201210031086 A CN201210031086 A CN 201210031086A CN 102620279 A CN102620279 A CN 102620279A
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Abstract
The invention discloses a full-film wall biomass boiler manufacturing method, which includes the following steps of manufacturing a boiler body, manufacturing a flake-type chain grate, covering the peripheral surface of the boiler body with a heat-preserving and thermal-insulating layer, and covering the outer surface of the heat-preserving and thermal-insulating layer with a metal case. The boiler body comprises a combustor, convection tube bundles arranged on the upper boiler barrel and on the lower boiler barrel, and connected between the upper boiler barrel and the lower boiler barrel. The wall surface of the combustor is a sealed membrane-type water cold wall welded by a plurality of finned tubes, the two ends of the membrane-type water cold wall are respectively connected with the upper boiler barrel and the lower boiler barrel, and the convection tube bundles are communicated with the front end of the heat exchanging channel formed between the upper boiler barrel and the lower boiler barrel and the smoke outlet of the combustor. The flake-type chain grate comprises a conveyance section, an air bellow and a screw feeding system. The invention further discloses a full-film wall biomass boiler, which enables fuels to be fully burned and the heat produced by burning to be fully utilized, so that energy saving and emission reduction can be achieved.
Description
Technical field
The present invention relates to boiler, particularly a kind of preparation method of full film type wall biomass boiler of efficient energy-saving and emission-reducing and this full film type wall biomass boiler.
Background technology
In the modern society, boiler is the thermal hardware with high temperature, high pressure, is one of special equipment, be widely used in office, undertaking and all trades and professions, and be danger and special devices.In case have an accident, relate to public safety, bring about great losses for the country and people's lives and properties.
Biomass boiler is a kind of boiler, with biomass energy as the boiler of fuel biomass boiler, biomass boiler probably is divided into two types by its purposes at present: a kind of is living beings heat energy boiler, and another kind is a living beings electric energy boiler.The principle of the two is basic identical, all is to obtain energy through firing biomass fuel, and just first kind is directly obtained heat energy, and second kind changes into electric energy again with heat energy.
Prior biological matter boiler and since structural design on unreasonable, sealing is poor; In use can occur leaking out or leak bad phenomenon such as cigarette; Result of use is poor, can not make full combustion of fuel, has caused the waste of fuel; Burn incompletely produced simultaneously black smoke, dust also cause bad influence to environment, have influenced peripheral living environment.
Simultaneously, the heat that fuel combustion produced does not utilize fully yet, because structural design is unreasonable, heat fully is not used for heat exchange, and most heat does not obtain utilizing along with smoke evacuation and heat radiation are run off in vain.
Therefore, a kind of fuel that can make fills burning, and the biomass boiler that can make full use of the burning heat that produces becomes boiler user's eager demand.
Summary of the invention
The objective of the invention is to,, a kind of preparation method of full film type wall biomass boiler is provided to the above-mentioned deficiency of prior art; Through the use of this method, prepare a kind of full film type wall biomass boiler, this full film type wall biomass boiler reasonable in design; Through the use of scale chain grate and fin panel casing, good seal performance in use can not occur leaking out or leaks bad phenomenon such as cigarette; Result of use is good, can not pollute environment.Reasonable structural design makes fuel fully to burn, and the heat that burning is produced is fully utilized, and runs off in vain in the process that can not discharge fume and dispel the heat, realizes the purpose of energy-saving and emission-reduction.
The present invention also provides the said preparation method of a kind of enforcement prepared this full film type wall biomass boiler.
The present invention for realizing the technical scheme that above-mentioned purpose adopted is:
A kind of preparation method of full film type wall biomass boiler, it may further comprise the steps:
(1) preparation one boiler body; This boiler body comprises that the combustion chamber, of being located at the right side is located at the upper drum, of left side upper end and is located at the lower drum of lower end, left side and is connected in the convection bank between this upper drum, the lower drum; The wall of said combustion chamber is for making the fin panel casing of the sealing that forms by some extended surface tube welderings; The two ends of this fin panel casing are connected respectively at this upper drum, lower drum, and the front end of the heat exchanger channels that forms between this convection bank and upper drum, the lower drum and the outlet flue of said combustion chamber communicate;
(2) preparation one scale chain grate; This scale chain grate comprises the delivery section that is used for transfer the fuel of being located at this below, combustion chamber; Right side in this delivery section is provided with bellows, and the front end of this delivery section is provided with the screw feeder system, and the rear end of this delivery section is provided with a slag-drip opening;
(3) bag is established the insulation layer on the outer peripheral face of said boiler body, and outside this insulation layer, is covered with metal shell;
(4) preparation one coal saving device, this coal saving device comprises a turning smoke-box that sets gradually from top to bottom, two economizers, a deduster and air-introduced machines, the end of this turning smoke-box and said heat exchanger channels is through a pipeline UNICOM.
In the said step (1); The fin panel casing of this chamber front end forms face arch to this combustion chamber inside protrusions; And cast is used for fuel is carried out the refractory concrete layer that radiation is ignited on this projection; In this combustion chamber, be provided with one strengthen said projection the rear arch of the radiation effect of igniting, this rear arch comprises rear arched tube that some and said upper drum is connected, is coated on the refractory concrete layer on this rear arched tube, the both sides of this combustion chamber are provided with wall with refractory lining, refracto.
In the said step (1); Said convection bank comprises the first row convection tube, secondary series convection tube and the 3rd row convection tube that is spliced successively by direction from left to right by some extended surface tubes; Between the 3rd row convection tube and the secondary series convection tube, formed the heat exchanger channels that links to each other between this secondary series convection tube and the first row convection tube, the end of this heat exchanger channels is provided with some light pipes that are connected with this upper drum, lower drum; The two ends of this heat exchanger channels are respectively equipped with a deashing inspection door, and the both sides of this heat exchanger channels are respectively equipped with a soot blower.
In the said step (2); Said delivery section comprises flake type conveyor chain structure and is located at the air compartment in this flake type conveyor chain structure; Said air compartment is connected with bellows, the swing type mop that the end of this flake type conveyor chain structure is provided with the lime-ash time of staying behind the increase coal combustion and prevents the combustion chamber to leak out.
The prepared full film type wall biomass boiler of a kind of preparation method by aforementioned full film type wall biomass boiler; It comprises a boiler body and a scale chain grate; This boiler body comprises that the combustion chamber, of being located at the right side is located at the upper drum, of left side upper end and is located at the lower drum of lower end, left side and is connected in the convection bank between this upper drum, the lower drum; The wall of said combustion chamber is for making the fin panel casing of the sealing that forms by some extended surface tube welderings; The two ends of this fin panel casing are connected respectively at this upper drum, lower drum, and the front end of the heat exchanger channels that forms between this convection bank and upper drum, the lower drum and the outlet flue of said combustion chamber communicate; This scale chain grate comprises the delivery section that is used for transfer the fuel of being located at this below, combustion chamber; Right side in this delivery section is provided with bellows; The front end of this delivery section is provided with the screw feeder system; A slag-drip opening has been sent out in the rear end of this delivery section, and bag is established the insulation layer on the outer peripheral face of said boiler body, and outside this insulation layer, is covered with metal shell.
It also comprises a coal saving device, and this coal saving device comprises a turning smoke-box that sets gradually from top to bottom, two economizers, a deduster and air-introduced machines, and the end of this turning smoke-box and said heat exchanger channels is through a pipeline UNICOM.
The fin panel casing of this chamber front end forms face arch to this combustion chamber inside protrusions; And cast is used for fuel is carried out the refractory concrete layer that radiation is ignited on this projection; The rear arch of the radiation effect of igniting of the said projection of one reinforcement is set in this combustion chamber; This rear arch comprises rear arched tube that some and said upper drum is connected, is coated on the refractory concrete layer on this rear arched tube, and the both sides of this combustion chamber are provided with wall with refractory lining, refracto.
Said convection bank comprises the first row convection tube, secondary series convection tube and the 3rd row convection tube that is spliced successively by direction from left to right by some extended surface tubes; Between the 3rd row convection tube and the secondary series convection tube, formed the heat exchanger channels that links to each other between this secondary series convection tube and the first row convection tube, the end of this heat exchanger channels is provided with some light pipes that are connected with this upper drum, lower drum; The two ends of this heat exchanger channels are respectively equipped with a deashing inspection door, and the both sides of this heat exchanger channels are respectively equipped with a soot blower.
Said delivery section comprises flake type conveyor chain structure and is located at the air compartment in this flake type conveyor chain structure; Said air compartment is connected with bellows, and the end of this flake type conveyor chain structure is provided with the swing type mop that increases the lime-ash time of staying behind the coal combustion one by one and prevent the combustion chamber to leak out.
Beneficial effect of the present invention is: the step of the inventive method reasonable in design ingenious, make the efficient height and cost is low; Through the prepared full film type wall biomass boiler of this method; Through the use of scale chain grate and fin panel casing, good seal performance in use can not occur leaking out or leaks bad phenomenon such as cigarette; Result of use is good, can not pollute environment.Reasonable structural design makes fuel fully to burn, and the heat that burning is produced is fully utilized, and runs off in vain in the process that can not discharge fume and dispel the heat, realizes the purpose of energy-saving and emission-reduction.
Below in conjunction with accompanying drawing and embodiment, the present invention is further specified.
Description of drawings
Fig. 1 is the perspective view of product of the present invention;
Fig. 2 is the A-A cutaway view among Fig. 1;
Fig. 3 is the B-B cutaway view among Fig. 1.
The specific embodiment
Embodiment: see Fig. 1 to Fig. 3, the preparation method of a kind of full film type wall biomass boiler of the present invention, it may further comprise the steps:
(1) preparation one boiler body; This boiler body comprises that the combustion chamber 1, of being located at the right side is located at the upper drum 2, of left side upper end and is located at the lower drum 3 of lower end, left side and is connected in the convection bank 4 between this upper drum 2, the lower drum 3; The wall of said combustion chamber 1 is for making the fin panel casing of the sealing that forms by some extended surface tube welderings; The two ends of this fin panel casing are connected respectively at this upper drum 2, lower drum 3, and the front end of the heat exchanger channels that forms between this convection bank 4 and upper drum 2, the lower drum 3 and the outlet flue 12 of said combustion chamber 1 communicate;
(2) preparation one scale chain grate 5; This scale chain grate 5 comprises the delivery section that is used for transfer the fuel 51 of being located at this 1 below, combustion chamber; Be provided with bellows 52 in the right side of this delivery section 51; The front end of this delivery section 51 is provided with screw feeder system 53, and the rear end of this delivery section 51 is provided with a slag-drip opening 54;
(3) bag is established insulation layer 6 on the outer peripheral face of said boiler body, and outside this insulation layer 6, is covered with metal shell 7.
It is further comprising the steps of:
(4) preparation one coal saving device 8, this coal saving device 8 comprise a turning smoke-box 81 that sets gradually from top to bottom, two economizers 82, a deduster 83 and air-introduced machines, and the end of this turning smoke-box 81 and said heat exchanger channels is through a pipeline 84 UNICOMs.
In the said step (1); The fin panel casing of this combustion chamber 1 front end forms face arch 12 to this combustion chamber 1 inside protrusions; And cast is used for fuel is carried out the refractory concrete layer that radiation is ignited on this projection; In this combustion chamber 1, be provided with one strengthen said projection the rear arch 13 of the radiation effect of igniting, this rear arch 13 comprises rear arched tube that some and said upper drum 2 is connected, is coated on the refractory concrete layer on this rear arched tube, the both sides of this combustion chamber 1 are provided with wall with refractory lining, refracto.
In the said step (1); Said convection bank 4 comprises the first row convection tube 41, secondary series convection tube 42 and the 3rd row convection tube 43 that is spliced successively by direction from left to right by some extended surface tubes; Between the 3rd row convection tube 43 and the secondary series convection tube 42, formed the heat exchanger channels that links to each other between this secondary series convection tube 42 and the first row convection tube 41, the end of this heat exchanger channels is provided with some light pipes 44 that are connected with this upper drum 2, lower drum 3; The two ends of this heat exchanger channels are respectively equipped with a deashing inspection door, and the both sides of this heat exchanger channels are respectively equipped with a soot blower.
In the said step (2); Said delivery section 51 comprises flake type conveyor chain structure and is located at the air compartment in this flake type conveyor chain structure; Said air compartment is connected with bellows 52, the swing type mop that the end of this flake type conveyor chain structure is provided with the lime-ash time of staying behind the increase coal combustion and prevents combustion chamber 1 to leak out.
The prepared full film type wall biomass boiler of a kind of preparation method by aforementioned full film type wall biomass boiler; It comprises a boiler body and a scale chain grate 5; This boiler body comprises that the combustion chamber 1, of being located at the right side is located at the upper drum 2, of left side upper end and is located at the lower drum 3 of lower end, left side and is connected in the convection bank 4 between this upper drum 2, the lower drum 3; The wall of said combustion chamber 1 is for making the fin panel casing of the sealing that forms by some extended surface tube welderings; The two ends of this fin panel casing are connected respectively at this upper drum 2, lower drum 3, and the front end of the heat exchanger channels that forms between this convection bank 4 and upper drum 2, the lower drum 3 and the outlet flue 12 of said combustion chamber 1 communicate; This scale chain grate 5 comprises the delivery section that is used for transfer the fuel 51 of being located at this 1 below, combustion chamber; Be provided with bellows 52 in the right side of this delivery section 51; The front end of this delivery section 51 is provided with screw feeder system 53; The rear end of this delivery section 51 is provided with a slag-drip opening 54, and bag is established insulation layer 6 on the outer peripheral face of said boiler body, and outside this insulation layer 6, is covered with metal shell 7.
It also comprises a coal saving device 8, and this coal saving device 8 comprises a turning smoke-box 81 that sets gradually from top to bottom, two economizers 82, a deduster 83 and air-introduced machines, and the end of this turning smoke-box 81 and said heat exchanger channels is through a pipeline 84 UNICOMs.
The fin panel casing of this combustion chamber 1 front end forms face arch 12 to this combustion chamber 1 inside protrusions; And cast is used for fuel is carried out the refractory concrete layer that radiation is ignited on this projection; The rear arch 13 of the radiation effect of igniting of the said projection of one reinforcement is set in this combustion chamber 1; This rear arch 13 comprises rear arched tube that some and said upper drum 2 is connected, is coated on the refractory concrete layer on this rear arched tube, and the both sides of this combustion chamber 1 are provided with wall with refractory lining, refracto.
Said convection bank 4 comprises the first row convection tube 41, secondary series convection tube 42 and the 3rd row convection tube 43 that is spliced successively by direction from left to right by some extended surface tubes; Between the 3rd row convection tube 43 and the secondary series convection tube 42, formed the heat exchanger channels that links to each other between this secondary series convection tube 42 and the first row convection tube 41, the end of this heat exchanger channels is provided with some light pipes 44 that are connected with this upper drum 2, lower drum 3; The two ends of this heat exchanger channels are respectively equipped with a deashing inspection door, and the both sides of this heat exchanger channels are respectively equipped with a soot blower.
Said delivery section 51 comprises flake type conveyor chain structure and is located at the air compartment in this flake type conveyor chain structure; Said air compartment is connected with bellows 52, the swing type mop that the end of this flake type conveyor chain structure is provided with the lime-ash time of staying behind the increase coal combustion and prevents combustion chamber 1 to leak out.
The inventive method step ingenious, manufacturing efficient height reasonable in design; Through the prepared full film type wall biomass boiler of this method; Through the use of scale chain grate and fin panel casing, good seal performance in use can not occur leaking out or leaks bad phenomenon such as cigarette; Result of use is good, can not pollute environment.Reasonable structural design makes fuel fully to burn, and the heat that burning is produced is fully utilized, and runs off in vain in the process that can not discharge fume and dispel the heat, realizes the purpose of energy-saving and emission-reduction.
Of the embodiment of the invention, with the preparation method of the inventive method and same or analogous other full film type wall biomass boilers of structure and implement prepared this full film type wall biomass boiler of this method, all in protection domain of the present invention.
Claims (10)
1. the preparation method of a full film type wall biomass boiler is characterized in that, it may further comprise the steps:
(1) preparation one boiler body; This boiler body comprises that the combustion chamber, of being located at the right side is located at the upper drum, of left side upper end and is located at the lower drum of lower end, left side and is connected in the convection bank between this upper drum, the lower drum; The wall of said combustion chamber is for making the fin panel casing of the sealing that forms by some extended surface tube welderings; The two ends of this fin panel casing are connected respectively at this upper drum, lower drum, and the front end of the heat exchanger channels that forms between this convection bank and upper drum, the lower drum and the outlet flue of said combustion chamber communicate;
(2) preparation one scale chain grate; This scale chain grate comprises the delivery section that is used for transfer the fuel of being located at this below, combustion chamber; Right side in this delivery section is provided with bellows, and the front end of this delivery section is provided with the screw feeder system, and the rear end of this delivery section is provided with a slag-drip opening;
(3) bag is established the insulation layer on the outer peripheral face of said boiler body, and outside this insulation layer, is covered with metal shell.
2. the preparation method of full film type wall biomass boiler according to claim 1 is characterized in that, it is further comprising the steps of:
(4) preparation one coal saving device, this coal saving device comprises a turning smoke-box that sets gradually from top to bottom, two economizers, a deduster and air-introduced machines, the end of this turning smoke-box and said heat exchanger channels is through a pipeline UNICOM.
3. the preparation method of full film type wall biomass boiler according to claim 1; It is characterized in that; In the said step (1); The fin panel casing of this chamber front end forms face arch to this combustion chamber inside protrusions, and cast is used for fuel is carried out the refractory concrete layer that radiation is ignited on this projection, and the rear arch of the radiation effect of igniting of the said projection of a reinforcement is set in this combustion chamber; This rear arch comprises rear arched tube that some and said upper drum is connected, is coated on the refractory concrete layer on this rear arched tube, and the both sides of this combustion chamber are provided with wall with refractory lining, refracto.
4. the preparation method of full film type wall biomass boiler according to claim 1; It is characterized in that; In the said step (1); Said convection bank comprises the first row convection tube, secondary series convection tube and the 3rd row convection tube that is spliced successively by direction from left to right by some extended surface tubes; Between the 3rd row convection tube and the secondary series convection tube, formed the heat exchanger channels that links to each other between this secondary series convection tube and the first row convection tube, the end of this heat exchanger channels is provided with some light pipes that are connected with this upper drum, lower drum; The two ends of this heat exchanger channels are respectively equipped with a deashing inspection door, and the both sides of this heat exchanger channels are respectively equipped with a soot blower.
5. the preparation method of full film type wall biomass boiler according to claim 1; It is characterized in that; In the said step (2); Said delivery section comprises flake type conveyor chain structure and is located at the air compartment in this flake type conveyor chain structure that said air compartment is connected with bellows, the swing type mop that the end of this flake type conveyor chain structure is provided with the lime-ash time of staying behind the increase coal combustion and prevents the combustion chamber to leak out.
6. prepared full film type wall biomass boiler of the preparation method by the said full film type wall biomass boiler of claim 1; It is characterized in that: it comprises a boiler body and a scale chain grate; This boiler body comprises that the combustion chamber, of being located at the right side is located at the upper drum, of left side upper end and is located at the lower drum of lower end, left side and is connected in the convection bank between this upper drum, the lower drum; The wall of said combustion chamber is for making the fin panel casing of the sealing that forms by some extended surface tube welderings; The two ends of this fin panel casing are connected respectively at this upper drum, lower drum, and the front end of the heat exchanger channels that forms between this convection bank and upper drum, the lower drum and the outlet flue of said combustion chamber communicate; This scale chain grate comprises the delivery section that is used for transfer the fuel of being located at this below, combustion chamber; Right side in this delivery section is provided with bellows; The front end of this delivery section is provided with the screw feeder system; The rear end of this delivery section is provided with a slag-drip opening, and bag is established the insulation layer on the outer peripheral face of said boiler body, and outside this insulation layer, is covered with metal shell.
7. full film type wall biomass boiler according to claim 6; It is characterized in that; It also comprises a coal saving device; This coal saving device comprises a turning smoke-box that sets gradually from top to bottom, two economizers, a deduster and air-introduced machines, and the end of this turning smoke-box and said heat exchanger channels is through a pipeline UNICOM.
8. full film type wall biomass boiler according to claim 6; It is characterized in that; The fin panel casing of this chamber front end forms face arch to this combustion chamber inside protrusions; And cast is used for fuel is carried out the refractory concrete layer that radiation is ignited on this projection; In this combustion chamber, be provided with one strengthen said projection the rear arch of the radiation effect of igniting, this rear arch comprises rear arched tube that some and said upper drum is connected, is coated on the refractory concrete layer on this rear arched tube, the both sides of this combustion chamber are provided with wall with refractory lining, refracto.
9. full film type wall biomass boiler according to claim 6; It is characterized in that; Said convection bank comprises the first row convection tube, secondary series convection tube and the 3rd row convection tube that is spliced successively by direction from left to right by some extended surface tubes; Between the 3rd row convection tube and the secondary series convection tube, formed the heat exchanger channels that links to each other between this secondary series convection tube and the first row convection tube, the end of this heat exchanger channels is provided with some light pipes that are connected with this upper drum, lower drum; The two ends of this heat exchanger channels are respectively equipped with a deashing inspection door, and the both sides of this heat exchanger channels are respectively equipped with a soot blower.
10. full film type wall biomass boiler according to claim 6; It is characterized in that; Said delivery section comprises flake type conveyor chain structure and is located at the air compartment in this flake type conveyor chain structure; Said air compartment is connected with bellows, the swing type mop that the end of this flake type conveyor chain structure is provided with the lime-ash time of staying behind the increase coal combustion and prevents the combustion chamber to leak out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210031086.5A CN102620279B (en) | 2012-02-13 | 2012-02-13 | Full-film wall biomass boiler manufacturing method and full-film wall biomass boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210031086.5A CN102620279B (en) | 2012-02-13 | 2012-02-13 | Full-film wall biomass boiler manufacturing method and full-film wall biomass boiler |
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| CN102620279A true CN102620279A (en) | 2012-08-01 |
| CN102620279B CN102620279B (en) | 2014-08-06 |
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| CN201210031086.5A Expired - Fee Related CN102620279B (en) | 2012-02-13 | 2012-02-13 | Full-film wall biomass boiler manufacturing method and full-film wall biomass boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104654279A (en) * | 2015-02-12 | 2015-05-27 | 广州迪森热能设备有限公司 | Denitration burning device of biomass boiler and dual-burner biomass boiler |
| CN104654265A (en) * | 2015-02-12 | 2015-05-27 | 广州迪森热能设备有限公司 | Ultralow-emission nitrogen oxide biomass chain boiler |
| CN104676611A (en) * | 2015-02-12 | 2015-06-03 | 广州迪森热能设备有限公司 | Boiler chain grate and tending zero-emission biomass chain boiler |
| CN105605545A (en) * | 2016-02-24 | 2016-05-25 | 广州迪森热能设备有限公司 | Biomass full-film type wall boiler |
| CN105927966A (en) * | 2016-05-27 | 2016-09-07 | 董磊 | Reciprocating grate biomass boiler hearth |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654279A (en) * | 2015-02-12 | 2015-05-27 | 广州迪森热能设备有限公司 | Denitration burning device of biomass boiler and dual-burner biomass boiler |
| CN104654265A (en) * | 2015-02-12 | 2015-05-27 | 广州迪森热能设备有限公司 | Ultralow-emission nitrogen oxide biomass chain boiler |
| CN104676611A (en) * | 2015-02-12 | 2015-06-03 | 广州迪森热能设备有限公司 | Boiler chain grate and tending zero-emission biomass chain boiler |
| CN104654265B (en) * | 2015-02-12 | 2017-01-04 | 广州迪森热能设备有限公司 | Ultralow-emission nitrogen oxide biomass chain boiler |
| CN105605545A (en) * | 2016-02-24 | 2016-05-25 | 广州迪森热能设备有限公司 | Biomass full-film type wall boiler |
| CN105927966A (en) * | 2016-05-27 | 2016-09-07 | 董磊 | Reciprocating grate biomass boiler hearth |
| CN105927966B (en) * | 2016-05-27 | 2018-03-23 | 董磊 | Reciprocal grate biomass boiler burner hearth |
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| CN102620279B (en) | 2014-08-06 |
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