CN215982514U - Novel energy-saving low-nitrogen-emission boiler - Google Patents
Novel energy-saving low-nitrogen-emission boiler Download PDFInfo
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- CN215982514U CN215982514U CN202121867398.0U CN202121867398U CN215982514U CN 215982514 U CN215982514 U CN 215982514U CN 202121867398 U CN202121867398 U CN 202121867398U CN 215982514 U CN215982514 U CN 215982514U
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model discloses a novel energy-saving low-nitrogen-emission boiler, which comprises a boiler body, a flue gas convection heat exchanger and a condensation heat exchanger, wherein the flue gas convection heat exchanger is arranged on the boiler body; the bottom of the boiler is provided with a support structure, and one side of the support structure, which faces to the condensing heat exchanger, is provided with a smoke exhaust box; the smoke exhaust box extends outwards along the horizontal direction to form a smoke exhaust port; the surface of the boiler body is coated with a nano composite coating; the top of boiler body is installed combustor subassembly and with combustor subassembly complex air supply assembly. The inner wall of the boiler body hearth of the boiler is coated with the nano composite coating at high temperatureThe heat absorption capacity per unit area can be improved by 1.5 to 2 times, the temperature of the hearth is greatly reduced, the volume of the hearth does not need to be increased, and NO can be reducedXThe amount of steel used can be reduced at the same time.
Description
Technical Field
The utility model relates to the technical field of burners, in particular to a novel energy-saving low-nitrogen-emission boiler which utilizes a novel nano composite heat transfer material and a novel combustion technology burner to reduce consumables, save energy and reduce nitrogen emission.
Background
With the continuous improvement of the environmental protection requirement, the development of atmosphere improvement and boiler emission control, the coal-fired boiler is completely banned and improved into a gas-fired boiler, and NO is discharged from all boiler flue gasXThe content is less than 80mg/Nm3(ii) a And gradually reduced to 30mg/Nm along with treatment3With the proposal of 'carbon peak reaching and carbon neutralization', daily energy conservation and emission reduction in various industries are improved, and especially the capacity reduction in the steel industry is particularly prominent.
The first mode is that a flue gas recovery condenser is additionally arranged at the tail part or the upper part of the boiler to absorb and preheat; the second is NO when the flame combustion temperature is more than 1200 DEG CXThe content is increased sharply, and the core principle of nitrogen reduction is to reduce the temperature of the flame.
The main technical means based on the two modes are respectively as follows:
the first method comprises the following steps: enlarging a boiler furnace, setting an internal recirculation structure and an FGR flue gas recirculation mode;
the purpose of enlarging the hearth is to reduce the combustion temperature by reducing the heat load per unit area of the hearth, and the internal recirculation is to return the low-temperature part at the periphery of the flame to the middle part of the flame for cooling, so that only NO can be cooledXThe content is reduced to 80mg/Nm3Hereinafter, the flue gas recirculation of the additional FGR is to extract the flue gas of the tail chimney of the boiler and supply the flue gas to the center of the flame to reduce the temperature of the center of the flame, and the flue gas emission can be reduced to 30mg/Nm by combining the flue gas and the flue gas3The following.
The technology has some disadvantages that firstly, the boiler volume is increased to occupy large area, so that the consumption is increased by 15-20%, and the cost is increased; NOXThe discharge is unstable, the discharge does not reach the standard within the load range of 10-100%, and the environmental protection test standard is that the discharge is qualified under the condition of 75% load, the qualified discharge is only one point, and the discharge exceeds the standard under more loads; the FGR recycling mode reduces the boiler output, reduces the efficiency by about 1.5 percent, and is not beneficial to energy conservation.
And the second method comprises the following steps: adopting a full-premixing surface combustion mode;
full premixing surface combustion into gas and airThe gas is mixed in advance and then is burnt in dense small holes on the surface of the metal net to reduce NO for surface type combustionXThe method can achieve NO without increasing the volume of the boilerXDischarge 20mg/Nm3Left and right.
However, the mode has some disadvantages, the maintenance cost is high, the potential safety hazard is large, the combustor needs to be provided with an air filter, the combustor is cleaned at least once every week according to the environment, and the combustion head is replaced at least once in a heating period; meanwhile, the combustion head is easy to be locally burnt and damaged, and the hearth explosion accident occurs.
In view of the above, there is a need for a new boiler based on the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a boiler which has compact and novel structure, low-nitrogen combustion mode, durability, no need of complicated maintenance, material saving and low cost.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model relates to a novel energy-saving low-nitrogen-emission boiler, which comprises:
a boiler body;
the flue gas convection heat exchanger is integrated at the lower part of the boiler body; and
the condensing heat exchanger is integrated at the lower part of the flue gas convection heat exchanger;
the bottom of the boiler is provided with a support structure, and one side of the support structure, which faces to the condensing heat exchanger, is provided with a smoke exhaust box;
the smoke exhaust box extends outwards along the horizontal direction to form a smoke exhaust port;
the surface of the boiler body is coated with a nano composite coating;
the top of boiler body is installed combustor subassembly and with combustor subassembly complex air supply assembly.
Further, the boiler body includes:
a furnace tube in a cylindrical structure;
the hearth is sleeved in the furnace barrel; and
the boiler seal head is arranged at the upper end of the furnace cylinder;
the surface of the hearth is coated with a nano composite coating;
the burner assembly is arranged on the boiler end socket, and a burner head of the burner assembly penetrates through the boiler end socket and extends into the hearth;
the combustion head is positioned at the upper part of the hearth.
Further, the flue gas convection heat exchanger comprises:
the radiation hearth diffusion structure is connected with the boiler body, and a first heat exchange cavity is formed inside the radiation hearth diffusion structure;
a plurality of radiation blocking tubes integrated within the first heat exchange chamber; and
a plurality of convection heat transfer tubes integrated inside the first heat exchange cavity;
the arrangement positions of the plurality of radiation blocking pipes are close to the boiler body, and the plurality of radiation blocking pipes are arranged in parallel along the width direction of the first heat exchange cavity;
many the convection current heat-transfer pipe arrange in the radiation block pipe keeps away from boiler body one side, and many the convection current heat-transfer pipe arranges side by side.
Further, the radiant hearth diffusing structure has:
the top diffusion plate is close to the boiler body and connected with the boiler body, and diffusion holes communicated with the hearth are uniformly distributed in the top diffusion plate;
a first tube sheet carrying the radiation blocking tubes and the convection heat transfer tubes;
the inclined diffusion plate is connected with the first tube plate at one end and extends upwards in an inclined mode at the other end and is connected with the top diffusion plate; and a side diffuser plate integrated with the side;
the bottom of the convection heat exchanger structure is provided with a radiation hearth bottom frame connected with the condensation heat exchanger;
the side diffuser plate comprises a first diffuser plate body and a second diffuser plate body;
the first diffusion plate body extends along the vertical direction and is arranged on the side surface of the flue gas convection heat exchanger, and the lower end of the first diffusion plate body is connected with the bottom frame of the radiant hearth;
the first diffusion plate body and the second diffusion plate body are of an integrated structure;
the second diffusion plate body extends obliquely and covers the oblique diffusion plate and is connected with the oblique diffusion plate.
Further, the condensing heat exchanger includes:
a second tube plate connected with the bottom frame of the radiant hearth;
the condenser heat exchange tubes are arranged in the condensing heat exchanger through the second tube plate, and a second heat exchange cavity is formed inside the condensing heat exchanger;
the condenser water jacket header is arranged outside the condensing heat exchanger and is connected with an external water source through a boiler water inlet pipe so as to receive cold water supplied by the external water source;
the bottom of the condensing heat exchanger is provided with a condensing heat exchanger bottom frame, and the condensing heat exchanger is assembled and fixed with the support structure through the condensing heat exchanger bottom frame;
the outer side surface of a condenser water jacket header of the condensation heat exchanger is sealed through a condensation water jacket outer plate.
Further, the stand-off structure includes:
the smoke discharging box; the support is supported at the bottom of the smoke discharging box;
the support comprises a support frame supported on the ground and support legs extending towards the smoke exhaust box, and the smoke exhaust box is connected with the support frame through the support legs;
a smoke exhaust box frame is arranged on one side of the smoke exhaust box matched with the condensing heat exchanger, and the smoke exhaust box frame is assembled with the bottom frame of the condensing heat exchanger;
the inside cavity of case of discharging fume forms into the chamber of discharging fume, just the exhaust port with discharge fume chamber intercommunication is in order to the external fume after the heat exchange of emission.
Further, the burner assembly has:
the combustion head; one end of the gas pipeline is connected with the combustion head, and the other end of the gas pipeline extends outwards and is connected with an external gas source;
and the gas pipeline is provided with a valve group for controlling gas delivery.
Furthermore, the combustion head adopts a cyclone combustion head, the combustion port of the combustion head is positioned in the circumferential direction, and the burning flame extends downwards from the inner wall of the hearth.
Further, the air supply assembly includes:
the air supply pipeline is matched with the burner assembly; and
and the air supply fan is communicated with the air supply pipeline through an air supply bent pipe and provides oxygen for the combustion of the burner assembly.
In the technical scheme, the novel energy-saving low-nitrogen-emission boiler provided by the utility model has the following beneficial effects:
after the nano composite coating is coated on the boiler body of the boiler, the heat absorption capacity per unit area at high temperature can be improved by 1.5 to 2 times, the temperature of a hearth is greatly reduced, and the volume of the hearth does not need to be increased, so that the steel consumption can be reduced, and the NO is reducedXThe amount of discharge of (c).
The boiler provided by the utility model uses the cyclone combustion head to combust through a plurality of flames, the flames are close to the inner wall of the hearth as much as possible, the flames rotate and descend along the water-cooled wall in an annular structure to fully wash the water-cooled wall, the temperature of the flames is reduced to 1200 ℃, and NO in the load range of 10-100XThe emissions were kept at 25mg/Nm3The following.
According to the boiler, the heating surface of the high-temperature radiation area of the boiler body of the boiler absorbs 75-80% of heat of the total load through the nano composite coating, and the low-temperature convection area formed by the stainless steel tube group absorbs 20-25% of heat of the total load by utilizing the advantage of large heat absorption surface of the finned tube; the boiler has the advantages that the volume of the boiler is reduced, the occupied area is saved by about 60%, the steel consumption is saved by about 55%, the full-load stepless regulation heat supply is realized, the low-nitrogen emission is continued, the heat efficiency reaches 98-105%, the risks of combustion, deflagration, explosion and the like are avoided, and the safety is higher.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of a novel energy-saving low-nitrogen-emission boiler provided by an embodiment of the utility model;
fig. 2 is a schematic diagram of a flame of a combustion head of a novel energy-saving low-nitrogen-emission boiler provided by an embodiment of the utility model.
Description of reference numerals:
1. a boiler body; 2. a flue gas convection heat exchanger; 3. a condensing heat exchanger; 4. a support structure; 5. a burner assembly; 6. an air supply assembly;
101. a furnace barrel; 102. a hearth; 103. a burner conduit; 104. sealing a boiler head; 105. a nanocomposite coating;
201. a first tube sheet; 202. a radiation blocking tube; 203. a convection heat transfer tube; 204. a top diffuser plate; 205. inclining the diffusion plate; 206. a first diffuser plate body; 207. a second diffuser plate body; 208. a radiant hearth bottom frame;
301. a second tube sheet; 302. a condenser heat exchange tube; 303. a condenser water jacket header; 304. a condensing heat exchanger bottom frame; 305. a boiler water inlet pipe; 306. a condensation water jacket outer plate;
401. a smoke exhaust box; 402. a smoke outlet; 403. a support frame; 404. a support leg;
501. a burner head; 502. a gas pipeline; 503. a valve block;
601. an air supply duct; 602. an air supply bent pipe; 603. an air supply fan.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-2;
the utility model relates to a novel energy-saving low-nitrogen-emission boiler, which comprises:
a boiler body 1;
a flue gas convection heat exchanger 2 integrated at the lower part of the boiler body 1; and
a condensing heat exchanger 3 integrated at the lower part of the flue gas convection heat exchanger 2;
the bottom of the boiler is provided with a support structure 4, and one side of the support structure 4, which faces the condensing heat exchanger 3, is provided with a smoke exhaust box 401;
a smoke outlet 402 extends outwards from the smoke exhaust box 401 along the horizontal direction;
the surface of the boiler body 1 is coated with a nano composite coating 105;
the top of the boiler body 1 is provided with a burner assembly 5 and an air supply assembly 6 matched with the burner assembly 5.
Specifically, this embodiment discloses a novel boiler structure, mainly includes boiler body 1, flue gas convection heat exchanger 2, condensing heat exchanger 3 to and the integrated bearing structure 4 in the boiler bottom, simultaneously, bearing structure 4 upper portion forms into case 401 of discharging fume, and case 401 of discharging fume has outside extension's exhaust port 402. In order to meet the design requirements of low nitrogen emission and small volume of the boiler, the nano composite coating 105 is coated on the surface of the boiler body 1, and the heat absorption capacity per unit area is improved through the nano composite coating 105; the boiler disclosed in the embodiment is different from the boiler structure in the prior art, the smoke outlet 402 is designed at the bottom of the boiler body 1, and high-temperature smoke generated by combustion is treated in a high-temperature radiation area and a low-temperature convection area, so that the temperature of the smoke is reduced. The nano composite coating 105 designed in this embodiment is formed by spraying borax, silica, zinc oxide, zirconia, titania, alumina, zirconia, and a binder in a proportion onto the inner wall of the hearth and firing the mixture at a high temperature.
Preferably, the boiler body 1 of the present embodiment includes:
a furnace tube 101 having a cylindrical structure;
a hearth 102 sleeved inside the furnace tube 101; and
a boiler head 104 arranged at the upper end of the furnace barrel 101;
the surface of the hearth 102 is coated with a nano composite coating 105;
the burner assembly 5 is installed on the boiler head 104, and a burner head 501 of the burner assembly 5 penetrates through the boiler head 104 and extends into the hearth 102;
the burner head 501 is located in the upper portion of the furnace 102.
The structure of the boiler body 1 is described in detail, and comprises a furnace barrel 101 and a hearth 102 positioned inside the furnace barrel 101, wherein the furnace barrel 101 and the hearth 102 can be used as a water jacket area, and cold water is filled between the furnace barrel 101 and the hearth 102 to exchange heat with flue gas. The hearth 102 is treated by the nano composite coating 105 to form a high temperature radiation zone heating surface, so that the heat of 75-80% of the total load is absorbed by the nano composite coating 105.
Preferably, the flue gas convection heat exchanger 2 of the present embodiment includes:
the radiation hearth diffusion structure is connected with the boiler body 1, and a first heat exchange cavity is formed inside the radiation hearth diffusion structure;
a plurality of radiation blocking tubes 202 integrated within the first heat exchange chamber; and
a plurality of convection heat transfer pipes 203 integrated inside the first heat exchange cavity;
the arrangement positions of the plurality of radiation blocking pipes 202 are close to the boiler body 1, and the plurality of radiation blocking pipes 202 are arranged in parallel along the width direction of the first heat exchange cavity;
the plurality of convection heat transfer tubes 203 are arranged on the side of the radiation cutoff tube 202 away from the boiler body 1, and the plurality of convection heat transfer tubes 203 are arranged in parallel.
Wherein, above-mentioned radiation furnace diffusion configuration has:
a top diffusion plate 204 which is close to the boiler body 1 and is connected with the boiler body 1, wherein diffusion holes communicated with the hearth 102 are uniformly distributed in the top diffusion plate 204;
a first tube sheet 201 carrying a radiation blocking tube 202 and a convection heat transfer tube 203;
an inclined diffuser plate 205 having one end connected to the first tube plate 201 and the other end extending obliquely upward and connected to the top diffuser plate 204; and
a side diffuser plate integrated at the side;
the bottom of the radiant hearth diffusing structure is provided with a radiant hearth bottom frame 208 connected with the condensing heat exchanger 3;
the side diffuser plate includes a first diffuser plate body 206 and a second diffuser plate body 207;
the first diffusion plate body 206 extends along the vertical direction and is arranged on the side surface of the flue gas convection heat exchanger 2, and the lower end of the first diffusion plate body 206 is connected with the bottom frame 208 of the radiant hearth;
the first diffuser plate body 206 and the second diffuser plate body 207 are of an integral structure;
the second diffuser plate 207 extends obliquely, and the second diffuser plate 207 covers the inclined diffuser plate 205 and is connected to the inclined diffuser plate 205.
First, the structural composition of the flue gas convection heat exchanger 2 is defined, which integrates a plurality of radiation blocking tubes 202 and a plurality of convection heat transfer tubes 203 through the first tube sheets 201 on both sides, and is formed into the flue gas convection heat exchanger 2 by using the above-mentioned radiant hearth diffusion structure. The flue gas convection heat exchanger 2 disclosed in this embodiment is used as a first low-temperature convection area for cooling flue gas.
Preferably, the condensing heat exchanger 3 of the present embodiment includes:
a second tube sheet 301 connected to a radiant firebox bottom frame 304;
the condenser heat exchange tubes 302 are arranged in the condensing heat exchanger 3 through a second tube plate 301, and a second heat exchange cavity is formed inside the condensing heat exchanger 3;
the condensing heat exchanger 3 is externally provided with a condenser water jacket header 303, and the condenser water jacket header 303 is connected with an external water source through a boiler water inlet pipe 305 to receive cold water supplied by the external water source;
the bottom of the condensing heat exchanger 3 is provided with a condensing heat exchanger bottom frame 304, and the condensing heat exchanger 3 is assembled and fixed with the support structure 4 through the condensing heat exchanger bottom frame 304;
the outer side surface of the condenser water jacket header 303 of the condensation heat exchanger 3 is closed by a condensation water jacket outer plate 306.
The structural composition of the condensing heat exchanger 3 is described in detail, which integrates a plurality of condenser heat exchange tubes 302 by using the second tube plate 301, and the condensing heat exchanger 3 of the present embodiment is used as a second-layer low-temperature convection zone for cooling flue gas.
The flue gas is cooled by the two layers of low-temperature convection areas, and the treated flue gas enters the smoke exhaust box 401 of the support structure 4 at the bottom of the boiler body 1 and is exhausted from the smoke exhaust port 402.
More specifically, the above-mentioned support structure 4 comprises:
a smoke exhaust box 401; and
a support 402 supported at the bottom of the smoke discharge box 401;
the support comprises a support frame 403 supported on the ground and a support leg 404 extending towards the smoke exhaust box 401, and the smoke exhaust box 401 is connected with the support frame 403 through the support leg 404;
a smoke exhaust box frame is arranged on one side, matched with the condensing heat exchanger 3, of the smoke exhaust box 401 and assembled with the bottom frame 304 of the condensing heat exchanger;
the inside of the smoke discharge box 401 is formed hollow as a smoke discharge chamber, and the smoke discharge port 402 communicates with the smoke discharge chamber to discharge heat-exchanged smoke to the outside.
Preferably, the burner assembly 5 in the present embodiment has:
a burner head 501; and
a gas pipeline 502 with one end connected with the combustion head 501 and the other end extending outwards and connected with an external gas source;
a valve group 503 for controlling the gas delivery is installed on the gas pipeline 502.
Specifically, the burner head 501 of this embodiment selects a cyclone burner head, the burner port of the burner head 501 is located in the circumferential direction, and the burning flame extends downward from the inner wall of the furnace 102.
The air supply assembly 6 includes:
an air supply duct 601 fitted to the burner assembly 5; and
an air supply fan 603 communicating with the air supply duct 601 through an air supply elbow 602, the air supply fan 603 providing oxygen for combustion of the burner assembly 5.
In the technical scheme, the novel energy-saving low-nitrogen-emission boiler provided by the utility model has the following beneficial effects:
after the boiler body of the boiler is coated with the nano composite coating 105, the heat absorption capacity per unit area at high temperature can be improved by 1.5 to 2 times, the temperature of the hearth 102 is greatly reduced, and the volume of the hearth 102 is not required to be increased, so that the steel consumption can be reduced, and the NO is reducedXThe amount of discharge of (c).
The boiler provided by the utility model uses the cyclone combustion head to burn through a plurality of flames, the flames are close to the inner wall of the hearth 102 as much as possible, the flames rotate and descend along the water-cooled wall in an annular structure to fully wash the water-cooled wall, the temperature of the flames is reduced to 1200 ℃, and NO in a load range of 10-100XThe emissions were kept at 25mg/Nm3The following.
According to the boiler, the heating surface of the high-temperature radiation area of the boiler body 1 of the boiler absorbs 75-80% of heat of the total load through the nano composite coating 105, and the low-temperature convection area formed by the stainless steel tube group absorbs 20-25% of heat of the total load by utilizing the advantage of large heat absorption surface of the finned tube; the boiler has the advantages that the volume of the boiler is reduced, the occupied area is saved by about 60%, the steel consumption is saved by about 55%, the full-load stepless regulation heat supply is realized, the low-nitrogen emission is continued, the heat efficiency reaches 98-105%, the risks of combustion, deflagration, explosion and the like are avoided, and the safety is higher.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.
Claims (9)
1. The utility model provides a novel energy-conserving low nitrogen emission's boiler which characterized in that, this boiler includes:
a boiler body (1);
a flue gas convection heat exchanger (2) integrated at the lower part of the boiler body (1); and
a condensing heat exchanger (3) integrated at the lower part of the flue gas convection heat exchanger (2);
the bottom of the boiler is provided with a support structure (4), and one side, facing the condensing heat exchanger (3), of the support structure (4) is provided with a smoke exhaust box (401);
the smoke exhaust box (401) extends outwards along the horizontal direction to form a smoke exhaust port (402);
the surface of the boiler body (1) is coated with a nano composite coating (105);
the boiler is characterized in that a burner component (5) and an air supply component (6) matched with the burner component (5) are installed at the top of the boiler body (1).
2. A new energy saving low nitrogen emission boiler according to claim 1, characterized in that said boiler body (1) comprises:
a furnace tube (101) having a cylindrical structure;
the hearth (102) is sleeved in the furnace barrel (101); and
a boiler head (104) arranged at the upper end of the furnace cylinder (101);
the surface of the hearth (102) is coated with a nano composite coating (105);
the burner assembly (5) is mounted on the boiler head (104), and a burner head (501) of the burner assembly (5) penetrates through the boiler head (104) and extends into the hearth (102);
the combustion head (501) is positioned at the upper part of the hearth (102).
3. The new energy saving low nitrogen emission boiler according to claim 2, characterized in that said flue gas convection heat exchanger (2) comprises:
the radiant hearth diffusion structure is connected with the boiler body (1), and a first heat exchange cavity is formed inside the radiant hearth diffusion structure;
a plurality of radiation blocking tubes (202) integrated within the first heat exchange chamber; and
a plurality of convection heat transfer tubes (203) integrated inside the first heat exchange cavity;
the arrangement positions of the plurality of radiation blocking pipes (202) are close to a hearth of the boiler body (1), and the plurality of radiation blocking pipes (202) are arranged in parallel along the width direction of the first heat exchange cavity;
many the convection current heat-transfer pipe (203) arrange in radiation block pipe (202) keep away from boiler body (1) one side, and many the convection current heat-transfer pipe (203) arrange side by side.
4. The new energy saving low nitrogen emission boiler according to claim 3, characterized in that said radiant firebox diffusion structure has:
the top diffusion plate (204) is close to the boiler body (1) and connected with the boiler body (1), and diffusion holes communicated with the hearth (102) are uniformly distributed in the top diffusion plate (204);
a first tube sheet (201) carrying the radiation blocking tubes (202) and the convection heat transfer tubes (203);
an inclined diffusion plate (205) having one end connected to the first tube plate (201) and the other end extending obliquely upward and connected to the top diffusion plate (204); and
a side diffuser plate integrated at the side;
the bottom of the radiation hearth diffusion structure is provided with a radiation hearth bottom frame (208) connected with the condensation heat exchanger (3);
the side diffuser plate comprises a first diffuser plate body (206) and a second diffuser plate body (207);
the first diffusion plate body (206) extends along the vertical direction and is arranged on the side surface of the flue gas convection heat exchanger (2), and the lower end of the first diffusion plate body (206) is connected with the bottom frame (208) of the radiant hearth;
the first diffuser plate body (206) and the second diffuser plate body (207) are of an integral structure;
the second diffusion plate body (207) extends obliquely, and the second diffusion plate body (207) covers the inclined diffusion plate (205) and is connected with the inclined diffusion plate (205).
5. The new energy saving low nitrogen emission boiler according to claim 4, characterized in that said condensing heat exchanger (3) comprises:
a second tube sheet (301) connected to the radiant firebox bottom frame (208);
the condenser heat exchange tubes (302) are mounted in the condensing heat exchanger (3) through the second tube plate (301), and a second heat exchange cavity is formed inside the condensing heat exchanger (3);
the condensing heat exchanger (3) is externally provided with a condenser water jacket header (303), and the condenser water jacket header (303) is connected with an external water source through a boiler water inlet pipe (305) to receive cold water supplied by the external water source;
the bottom of the condensation heat exchanger (3) is provided with a condensation heat exchanger bottom frame (304), and the condensation heat exchanger (3) is fixedly assembled with the support structure (4) through the condensation heat exchanger bottom frame (304);
the outer side surface of a condenser water jacket header (303) of the condensation heat exchanger (3) is sealed by a condensation water jacket outer plate (306).
6. A new energy saving low nitrogen emission boiler according to claim 5, characterized in that said support structure (4) comprises:
the smoke exhaust box (401); and
the support is supported at the bottom of the smoke exhaust box (401);
the support comprises a support frame (403) supported on the ground and a support leg (404) extending towards the smoke exhaust box (401), and the smoke exhaust box (401) is connected with the support frame (403) through the support leg (404);
a smoke exhaust box frame is arranged on one side, matched with the condensation heat exchanger (3), of the smoke exhaust box (401), and is assembled with the bottom frame (304) of the condensation heat exchanger;
the inside of the smoke exhaust box (401) is formed into a smoke exhaust cavity in a hollow mode, and the smoke exhaust port (402) is communicated with the smoke exhaust cavity to exhaust smoke subjected to heat exchange to the outside.
7. The new energy saving low nitrogen emission boiler according to claim 2, characterized in that said burner assembly (5) has:
the combustion head (501); and
a gas pipeline (502) with one end connected with the combustion head (501) and the other end extending outwards and connected with an external gas source;
and a valve group (503) for controlling gas delivery is arranged on the gas pipeline (502).
8. The novel energy-saving low-nitrogen-emission boiler as claimed in claim 7, characterized in that the burner head (501) is a cyclone burner head, the burner ports of the burner head (501) are located in the circumferential direction, and the burning flame extends downwards from the inner wall of the furnace (102).
9. The new energy saving low nitrogen emission boiler according to claim 7, characterized in that said air supply assembly (6) comprises:
a supply duct (601) cooperating with said burner assembly (5); and
the air supply fan (603) is communicated with the air supply pipeline (601) through an air supply bent pipe (602), and the air supply fan (603) provides oxygen for combustion of the burner assembly (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121867398.0U CN215982514U (en) | 2021-08-11 | 2021-08-11 | Novel energy-saving low-nitrogen-emission boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121867398.0U CN215982514U (en) | 2021-08-11 | 2021-08-11 | Novel energy-saving low-nitrogen-emission boiler |
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| Publication Number | Publication Date |
|---|---|
| CN215982514U true CN215982514U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121867398.0U Active CN215982514U (en) | 2021-08-11 | 2021-08-11 | Novel energy-saving low-nitrogen-emission boiler |
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| Country | Link |
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| CN (1) | CN215982514U (en) |
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2021
- 2021-08-11 CN CN202121867398.0U patent/CN215982514U/en active Active
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Address after: 221344 industrial concentration area, chefushan Town, Pizhou City, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Huashier Boiler and Pressure Vessel Co.,Ltd. Address before: 221300 industrial cluster area of Che Fu Shan town, Pizhou City, Xuzhou, Jiangsu Patentee before: JIANGSU HUASHIER BOILER ENERGY SAVING EQUIPMENT Co.,Ltd. |