WO2019148462A1

WO2019148462A1 - Air distributing pipe frame, air distributing pipe frame system and segmented burning furnace

Info

Publication number: WO2019148462A1
Application number: PCT/CN2018/075160
Authority: WO
Inventors: 车战斌
Original assignee: 北京能祺热能技术有限公司
Priority date: 2018-02-02
Filing date: 2018-02-02
Publication date: 2019-08-08
Also published as: CN110382960B; CN110382960A

Abstract

An air distributing pipe frame, an air distributing pipe frame system and a segmented burning furnace. The air distributing pipe frame is installed in a burning furnace, and comprises a main pipe frame and at least one branch pipe frame (100); the main pipe frame is connected to the branch pipe frame (100) to support the branch pipe frame (100); and the branch pipe frame (100) comprises a plurality of branch pipes (101), and the plurality of branch pipes (101) are distributed at intervals. The air distributing pipe frame system comprises an air distributing pipe frame. The segmented burning furnace comprises an air distributing pipe frame system. The air distributing pipe frame facilitates the fluidity of air at different positions of solid fuel and ensures complete combustion of the solid fuel.

Description

Split duct frame, split duct system and segmented burner

Technical field

The invention relates to the technical field of combustion furnaces, in particular to a divided air duct frame, a divided air pipe rack system and a segmented combustion furnace.

Background technique

For a combustion furnace, complete combustion of the fuel in the furnace is the desired effect. The full combustion of the fuel requires sufficient contact of combustion-supporting substances such as air or oxygen; however, existing combustion furnaces usually have fuel, especially The solid fuel piles are burned together, which tends to cause insufficient combustion-supporting substances in contact with solid fuels in a certain area, which is not conducive to the combustion of solid fuels.

Summary of the invention

The object of the present invention is to provide a split duct frame, a split duct rack system and a segmented burner to solve the combustion combustion in the existing furnace in which a solid fuel in a certain area is exposed. Technical problem of insufficient material, which is not conducive to the combustion of solid fuel

The present invention provides a split duct frame for mounting in a combustion furnace, comprising a mainframe and at least one branching rack; the mainframe is connected to the branching rack to support the branching rack; The rack includes a plurality of branch tubes, and the plurality of branch tubes are spaced apart.

Further, a plurality of the branch pipes are arranged in parallel in the first direction.

Further, the main frame includes at least one transverse tube, the branch tube being connected to the lateral tube; the first direction being parallel to a length direction of the lateral tube.

Further, the tube diameter of the lateral tube is larger than the tube diameter of the branch tube.

Further, the radial cross section of the branch pipe has a circular or polygonal shape.

Further, a strap is mounted on the branch pipe.

Further, the spacing between two adjacent branch pipes in the pipe rack is equal.

Further, the spacing between two adjacent branch pipes in the pipe rack changes by an arithmetic progression.

Further, the number of the transverse tubes is two, and the two lateral tubes are arranged in parallel, and the branch tubes are disposed between the two lateral tubes, wherein one end of the branch tube and one of the branches are The transverse tubes are in communication, and the other end of the branch tubes is in communication with the other of the transverse tubes.

Further, the number of the pipe racks is two, which are respectively a first pipe rack and a second pipe rack; the first pipe rack is located above the second pipe rack to form an accommodating space.

Further, the branch pipe of the first pipe rack has a first bent portion bent downward and a first straight portion communicating with the first bent portion, the first bent portion Communicating with one of the lateral tubes; the branch tube of the second branching tube has a second bent portion bent upward and a second straight portion communicating with the second bent portion, The second bent portion is in communication with the other of the transverse tubes.

Further, the two lateral tubes have a height difference in the vertical direction.

Further, the number of the lateral tubes is four, which are respectively a first lateral tube, a second lateral tube, a third lateral tube and a fourth lateral tube; the first lateral tube, the second lateral tube, and the The third lateral tube and the fourth lateral tube are parallel to each other; the number of the branching tubes is two, one of the branches is disposed between the first lateral tube and the second lateral tube, and the other The branch pipe is disposed between the third lateral pipe and the fourth lateral pipe.

Further, the first lateral tube and the third lateral tube are in communication with each other through the first longitudinal tube.

Further, the number of the first longitudinal tubes is plural, and the plurality of the first longitudinal tubes are arranged in parallel.

Further, the spacing between two adjacent first longitudinal tubes is equal; or the spacing between two adjacent first longitudinal tubes varies by an arithmetic progression.

Further, further comprising an interlayer pipe rack disposed between the two pipe racks; the interlayer pipe rack includes a plurality of parallel spaced intermediate pipes, wherein the intermediate pipe is connected to the first longitudinal pipe .

The present invention also provides a split duct system comprising the split duct bracket.

Further, the number of the air distribution ducts is plural.

The present invention also provides a segmented burner comprising the split duct system.

Compared with the prior art, the beneficial effects of the present invention are:

The invention provides a distribution pipe or a distribution pipe rack system in a combustion chamber for burning solid fuel in a combustion furnace, and when the solid fuel is accumulated in the combustion chamber, the solid fuel is loosened, and the void of the solid combustion is increased. After the solid fuel is burned, after the combustion in the combustion chamber, the wind can flow along the extension direction of the branch pipe of the branch pipe; in addition, due to the action of its own gravity, the solid fuel will sink due to the solid fuel in the combustion process. The split duct frame facilitates the loosening of the solid fuel, thereby making the fuel burn more fully.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the specific embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a schematic structural view of a first air distribution pipe rack according to an embodiment of the present invention;

2 is a front view of a first air distribution pipe rack according to an embodiment of the present invention;

3 is a top plan view of a first air distribution pipe rack according to an embodiment of the present invention;

4 is a schematic structural view of a air distribution pipe rack according to a second modified structure according to an embodiment of the present invention;

5 is a front view of a splitter pipe rack according to a second modified structure according to an embodiment of the present invention;

6 is a top plan view of a splitter pipe rack of a second modified structure according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of another perspective view of a split duct frame according to a second modified structure according to an embodiment of the present invention; FIG.

Figure 8 is a partially enlarged schematic view of a portion A in Figure 7;

FIG. 9 is a schematic structural diagram of a air distribution pipe rack system according to an embodiment of the present invention; FIG.

Figure 10 is a front elevational view of the air distribution pipe rack system according to an embodiment of the present invention;

11 is a top plan view of a split duct rack system according to an embodiment of the present invention.

In the picture:

100-sub-bracket; 101-branch; 103-ply; 104-upper transverse pipe;

105-lower lateral pipe; 106-first bent portion; 107-first straight portion;

108-second bent portion; 109-second straight portion; 110-vacant space;

111-first transverse tube; 112-second lateral tube; 113-third lateral tube;

114-fourth transverse pipe; 115-first water inlet; 116-second water outlet;

117-third water inlet; 118-fourth water outlet; 119- middle tube; 120-first longitudinal tube;

121 - second longitudinal tube; 122 - intermediate horizontal tube; 123 - inclined plate portion.

Detailed ways

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

Referring to Figures 1 and 4, an embodiment of the present invention provides a split duct frame for installation in a combustion furnace to increase a void ratio of fuel in a combustion chamber of the combustion furnace; the split duct frame includes The main frame and the at least one pipe rack 100; the main frame is connected to the pipe rack 100 to support the pipe rack 100; the pipe rack 100 includes a plurality of branch pipes 101, and the plurality of branch pipes 101 are spaced apart. By providing a split duct rack or a split duct rack system in the combustion chamber of the combustion solid fuel of the combustion furnace, when the solid fuel is accumulated in the combustion chamber, the solid fuel is loosened, and the void ratio of the solid combustion is increased; After the solid fuel is burned, after the air in the combustion chamber is ventilated, the wind can flow along the extending direction of the branch pipe 101 of the pipe rack 100. In addition, since the solid fuel is in the combustion process, the solid fuel will sink due to its own gravity. The split duct frame facilitates the loosening of the solid fuel, thereby making the fuel burn more fully. The extending direction of the branch pipe 101 is substantially the same as the flow of volatile organic matter (volatile matter) generated by the solid combustion chamber in the combustion furnace into the gas combustion chamber. The air duct frame is more suitable for the furnace body of a smaller combustion furnace. The branch pipe 101 has a certain inclination angle with respect to the horizontal direction; and among the two end nozzles of the branch pipe 101, the highest end pipe mouth is close to the feed port of the fuel furnace, and the bottom end pipe end is far away from the fuel furnace. The inlet port of the bottom end is located near the inlet of the gas combustion chamber of the fuel furnace.

In an alternative embodiment of the embodiment, the plurality of branch pipes 101 are arranged in parallel along the first direction, that is, the plurality of branch pipes 101 in each of the pipe racks 100 are arranged in parallel with each other; After accumulating in the combustion chamber, it is easy to balance the combustion situation at the same height and at different positions in the solid fuel. In addition, it should be noted that the spacing between each branch pipe 101 in each of the pipe racks 100 can also be adjusted according to the implementation situation, and the non-parallel settings can also be adopted between the respective branch pipes 101, that is, adjacent two The root branch pipes 101 have an angle between them.

In an alternative embodiment of this embodiment, the main frame comprises at least one transverse tube, the branch tube 101 being connected to the transverse tube; the first direction being parallel to the longitudinal direction of the transverse tube. The extending direction of the branch pipe 101 is substantially perpendicular to the first direction. Specifically, when the material used for the air duct frame is not resistant to high temperature, that is, in a high temperature environment, when melting or bending occurs, the plurality of pipe members used in the air duct frame can be made into a hollow tube structure, which is convenient for the branching. The circulating water is introduced into the air duct frame to make the temperature of the air distribution pipe frame at a certain temperature, so as to ensure that the air distribution pipe frame does not melt or bend. The circulating water can also be realized by other circulating liquids, but the purpose is not to reduce the internal temperature of the solid fuel when the solid fuel is burned. The number of transverse pipes of the main frame can be set according to the size of the air distribution pipe frame. The branch pipe 101 and the transverse pipe are connected by welding.

In an alternative embodiment of this embodiment, the tube diameter of the transverse tube is greater than the tube diameter of the branch tube 101. Such a design is more suitable for use in the circulation of circulating fluid into the air duct frame; in order to maintain the branch tube 101 in the high temperature environment, the internal temperature does not change greatly in order to balance the solid fuel during combustion. Because of the tube diameter design, it is advantageous to reduce the influence of the temperature change of the branch pipe 101 on the internal temperature of the solid fuel during combustion; and the transverse pipe used to carry the main converging function of the circulating fluid. The transverse pipe can be placed at the furnace wall of the furnace or it can be set according to the actual situation.

In an alternative embodiment of this embodiment, the radial cross-section of the branch pipe 101 is circular or polygonal in shape. The radial cross section of the transverse tube is circular in shape. It should be noted that the shape of the radial cross section of the pipe member of the air distribution pipe frame in this embodiment may be circular.

In an alternative embodiment of this embodiment, the strap 103 is mounted on the branch pipe 101. The slab 103 placed on the branch pipe 101 is provided in order to reduce the influence of the high temperature in the combustion chamber on the branch pipe 101, and in addition, the gas flow in the solid fuel is also facilitated.

In an alternative embodiment of this embodiment, the spacing between adjacent two branch pipes 101 in each of the pipe racks 100 is equal. It should be noted that the spacing between two adjacent branch pipes 101 in the pipe rack 100 may also be changed in an arithmetic progression.

Referring to FIG. 1 to FIG. 3 , in the structure of the first air distribution pipe rack provided by the embodiment, the number of the horizontal pipes of the main pipe frame is two, and the two horizontal pipes are arranged in parallel, and the pipe rack 100 is disposed at Between the two transverse tubes, one end of the branch tube 101 communicates with one of the transverse tubes, and the other end of the branch tube 101 communicates with the other of the transverse tubes. The two transverse tubes have a height difference in the vertical direction, that is, one transverse tube is located above the other lateral tube. In order to facilitate distinguishing the two transverse tubes of the main frame, they are respectively referred to as the upper lateral tube 104 and below. The transverse tube 105 is such that one end of each branch tube 101 of the branching rack 100 communicates with the upper transverse tube 104, and the other end of the branch tube 101 communicates with the lower lateral tube 105. The number of the pipe racks 100 of the air duct frame is two, which are respectively the first pipe rack 100 and the second pipe rack 100. The first pipe rack 100 is located above the second pipe rack 100 to form an accommodating space. . The branch pipe 101 of the first pipe rack 100 has a first bent portion 106 bent downward and a first straight portion 107 communicating with the first bent portion 106, the first bent portion 106 and one of the lateral portions The tube is in communication, that is, the first bent portion 106 is in communication with the lower lateral tube 105; the first straight portion 107 is in communication with the upper lateral tube 104, and in addition, the branch tube 101 of the first branch rack 100 has a strong load. The end of the first straight portion 107 can be bent downward to communicate with the upper transverse tube 104. The branch pipe 101 of the second pipe rack 100 has a second bent portion 108 bent upward and a second straight portion 109 communicating with the second bent portion 108, and the second bent portion 108 is connected to the other transverse pipe The second bent portion 108 communicates with the upper lateral tube 104. The second straight portion 109 communicates with the lower lateral tube 105, and the end portion of the second straight portion 109 can be bent upward to communicate with the lower lateral tube 105. It should be noted that the end portion of the second straight portion 109 may be bent downward to communicate with the lower lateral tube 105, so that the end portion of the second straight portion 109 may be arched to improve the second straight portion. 109 carrying capacity. In the air duct frame, a strap 103 is disposed above the first branch rack 100, a strap 103 is disposed above the second branch rack 100, and the strap 103 on the second branch rack 100 is located in the receiving space. .

Referring to FIG. 4 to FIG. 8 , the number of the lateral tubes of the air distribution tube frame of the second modified structure provided by the embodiment is four, which are respectively the first horizontal tube 111 , the second horizontal tube 112 , and the third horizontal direction. The tube 113 and the fourth lateral tube 114; the first lateral tube 111, the second lateral tube 112, the third lateral tube 113 and the fourth lateral tube 114 are parallel to each other; the first lateral tube 111 and the third lateral tube 113 are located at the tube rack 100 One end of the branch pipe 101, and the second lateral pipe 112 and the fourth lateral pipe 114 are located at the other end of the branch pipe 101 of the pipe rack 100. The number of the pipe racks 100 is two, one of the pipe racks 100 is disposed between the first horizontal pipe 111 and the second lateral pipe 112, and the other pipe rack 100 is disposed between the third horizontal pipe 113 and the fourth horizontal pipe 114. One of the manifold racks 100 is located above the other manifold rack 100. The first lateral tube 111 and the third lateral tube 113 are in communication with each other through the first longitudinal tube 120. The number of the first longitudinal tubes 120 is plural, and the plurality of first longitudinal tubes 120 are arranged in parallel; the spacing between the adjacent two first longitudinal tubes 120 is equal. One end of the first lateral tube 111 has a first water outlet 115, and the other end of the first horizontal tube 111 has a second water outlet 116. The air distribution pipe rack of the deformed structure further comprises an interlayer pipe rack disposed between the two pipe racks 100; the interlayer pipe rack comprises a plurality of parallel spaced intermediate pipes 119, and the intermediate pipe 119 is connected to the first longitudinal pipe 120 through. The second lateral tube 112 and the fourth lateral tube 114 are connected by a second longitudinal tube 121, one end of the second longitudinal tube 121 is in communication with the second lateral tube 112, and the other end of the second longitudinal tube 121 is in a fourth lateral direction. The tubes 114 are in communication; the number of the second longitudinal tubes 121 is two, and the two second longitudinal tubes 121 are arranged in parallel, and the two second longitudinal tubes 121 are also provided with a plurality of intermediate horizontal tubes 122 arranged in parallel. . One end of the intermediate tube 119 is in communication with the first longitudinal tube 120, and the second longitudinal tube 121 is in communication with an intermediate horizontal tube 122. The fourth lateral pipe 114 has a third water outlet 117 at one end and a fourth water outlet 118 at the other end. Both the branch pipe 101 and the intermediate pipe 119 are provided with a lap 103, and the branch pipe 101 or the intermediate pipe 119 is located below the lap 103. The lap plate 103 on the branch pipe 101 and the intermediate pipe 119 is divided into two cases, one is that the lap plate 103 is a flat plate; the other is that the lap plate 103 includes two inclined plate portions 123 disposed at an angle, such that The aspect is advantageous for the solid fuel to automatically sink due to the action of gravity during combustion, and on the other hand, the solid fuel can be prevented from directly contacting the branch pipe 101 or the intermediate pipe 119. It should be noted that, in the split duct frame, the spacing between two adjacent first longitudinal tubes 120 varies by an arithmetic progression. The number of interlayer pipe racks, the spacing between adjacent two interlayer pipe racks, and the density of the intermediate pipe 119 can be designed according to the realization to adapt to the solid fuel in the fuel, the natural fuel naturally produces different layers. The change is: the change between the unburned layer of the solid fuel, the dry distillation cracking layer, the carbon combustion layer, the semi-burning layer and the ash layer. In addition, in the air duct frame, the inclination angle between the branch pipe frame 100 and the interlayer pipe frame and the horizontal direction is different, and the inclination angle can be varied in diversity to adapt to the natural stratification of the solid fuel. The direction of the fluid in the dividing duct frame is from the bottom third water inlet and the fourth water inlet, and then flows out from the topmost first water outlet and the second water outlet.

Embodiments of the present invention also provide a split duct system including the split duct bracket as described above.

In an alternative embodiment of this embodiment, the split duct system further includes a water supply system for delivering circulating water to the split duct rack.

Referring to FIG. 9 to FIG. 11 , in the alternative embodiment of the embodiment, when the air distribution pipe rack system adopts the structure of the first air distribution pipe rack, the number of the air distribution pipe racks in the air distribution pipe rack system is A plurality of, for example, four, four, arranged in two rows and two columns, are distributed in the combustion chamber of the solid fuel of the combustion furnace.

Embodiments of the present invention also provide a segmented burner comprising a split duct system as described above. The number of air duct rack systems can be set to one or more as needed. It should be noted that the segmented burner means that the solid combustion and the volatile organic compounds produced by the combustion of the solid fuel are burned in different combustion chambers. By providing a split duct system in the segmented combustion furnace, the void ratio of the solid fuel can be greatly improved, so that the solid fuel can be fully burned, the combustion efficiency can be improved, the coking phenomenon can be weakened, and the ash content of the furnace ash can be reduced. The amount of carbon.

Industrial applicability

The air distribution pipe frame, the air distribution pipe frame system and the sectional combustion furnace provided by the embodiments of the invention are beneficial to the fluidity of the air in different parts of the solid fuel, and ensure the full combustion of the solid fuel, and have high practicality in the industry. value.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range. In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features that are included in other embodiments and not in other features, combinations of features of different embodiments are intended to be within the scope of the present invention. Different embodiments are formed and formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

Claims

A splitter pipe rack for mounting in a combustion furnace, characterized by comprising a main pipe frame and at least one pipe branch frame; the main pipe frame being connected with the pipe branch frame to support the pipe branch frame; The rack includes a plurality of branch tubes, and the plurality of branch tubes are spaced apart.
A splitter pipe rack according to claim 1, wherein a plurality of said branch pipes are arranged in parallel in the first direction.
A splitter pipe rack according to claim 2, wherein said main pipe frame includes at least one transverse pipe, said branch pipe being connected to said lateral pipe; said first direction and said transverse pipe The length directions are parallel.
The splitter pipe rack according to claim 3, wherein the pipe diameter of the transverse pipe is larger than the pipe diameter of the branch pipe.
A splitter pipe rack according to any one of claims 1 to 4, characterized in that the radial cross section of the branch pipe has a circular or polygonal shape.
A splitter pipe rack according to any one of claims 1 to 4, wherein a slab is mounted on the branch pipe.
A splitter pipe rack according to any one of claims 2 to 4, wherein the spacing between two adjacent ones of the branch pipes is equal.
The air distribution pipe rack according to any one of claims 2 to 4, wherein a distance between two adjacent ones of the branch pipes in the pipe branch frame is changed by an arithmetic progression.
The air distribution pipe rack according to claim 3, wherein the number of the horizontal pipes is two, and the two horizontal pipes are arranged in parallel, and the branch pipe is disposed between the two horizontal pipes. Wherein one end of the branch pipe is in communication with one of the transverse pipes, and the other end of the branch pipe is in communication with the other of the transverse pipes.
The air distribution pipe rack according to claim 9, wherein the number of the pipe racks is two, which are respectively a first pipe rack and a second pipe rack; and the first pipe rack is located in the second pipe Above the rack, it is used to form an accommodation space.
The air distribution pipe rack according to claim 10, wherein the branch pipe of the first pipe branch frame has a first bent portion bent downward and communicates with the first bent portion a first straight portion, the first bent portion is in communication with one of the lateral tubes; the branch tube of the second branch frame has a second bent portion bent upward and a second straight portion that communicates with the two bent portions, and the second bent portion communicates with the other of the lateral tubes.
A splitter pipe rack according to any one of claims 9-11, characterized in that the two transverse pipes have a height difference in the vertical direction.
The air distribution pipe rack according to claim 3, wherein the number of the horizontal pipes is four, which are a first horizontal pipe, a second horizontal pipe, a third horizontal pipe, and a fourth lateral pipe, respectively; The first lateral tube, the second lateral tube, the third lateral tube and the fourth lateral tube are parallel to each other; the number of the branching frames is two, and one of the partial tubes is erected in the first lateral direction Between the tube and the second lateral tube, another of the branch tubes is disposed between the third lateral tube and the fourth lateral tube.
A splitter pipe rack according to claim 13 wherein said first transverse pipe and said third transverse pipe are in communication with each other through a first longitudinal pipe.
The splitter pipe rack according to claim 14, wherein the number of the first longitudinal pipes is plural, and the plurality of the first longitudinal pipes are arranged in parallel.
The air distribution pipe rack according to claim 15, wherein a spacing between two adjacent first longitudinal pipes is equal; or a spacing between two adjacent first longitudinal pipes is The difference in the number of columns changes.
A splitter pipe rack according to any one of claims 14-16, further comprising an interlayer pipe rack disposed between the two pipe racks; the interlayer pipe rack comprising a plurality of parallel pipes An intermediate tube is disposed at intervals, the intermediate tube being in communication with the first longitudinal tube.
A split duct system comprising a split duct frame according to any of claims 1-17.
The splitter pipe rack system according to claim 18, wherein the number of the splitter pipe racks is plural.
A sectional combustion furnace characterized by comprising a split duct system according to claim 18 or 19.