WO2016183849A1

WO2016183849A1 - Flow guide wall, and combustion device for solid fuel

Info

Publication number: WO2016183849A1
Application number: PCT/CN2015/079526
Authority: WO
Inventors: 车战斌
Original assignee: 车战斌
Priority date: 2015-05-21
Filing date: 2015-05-21
Publication date: 2016-11-24

Abstract

A flow guide wall (2) and a combustion device (100). More than two flow guide walls (2) are disposed on a flowing path of a volatile matter (51) in a hearth (10) of the combustion device (100) at intervals. Before the volatile matter (51) flows towards a tail gas outlet (201) of the combustion device (100), the volatile matter (51) is sequentially stopped by the flow guide walls (2) stage by stage by level and is guided to flames under the flow guide walls (2) and then is fired, until the volatile matter (51) is ignited to be in a flame state. The combustion device (100) reduces emission of harmful gas when combustion states are changed.

Description

Diversion wall and solid fuel combustion device

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to the field of solid fuel combustion, and more particularly to a guide wall for guiding the flow direction of a hot gas stream in a combustion apparatus for a solid fuel and a combustion apparatus for solid fuel.

Background technique

From the perspective of fuel classification, solid fuels are the most widely used combustion materials, especially coal, because of their abundant resources and safe use. In addition, with the increase in the demand for mineral solid fuels represented by coal, the reduction of resources, and the development of global new energy campaigns, renewable biomass burning materials such as straw, straw, wood, wood chips, Dead branches and other molding fuels have received great attention.

After careful study, the inventors found that the main characteristics of biomass burning and low-quality coal (such as bituminous coal, lignite) and other combustion materials are relatively low fixed carbon content and relatively high volatile content (about 30%-70%). When these relatively high volatile fuels are directly burned in a conventional combustion apparatus, most of the volatiles are directly discharged in the form of black smoke, which not only has a very low combustion efficiency, but also causes serious environmental pollution.

Based on the above, the inventors have proposed a combustion apparatus for burning which can sufficiently burn volatile matter in a solid fuel having a high volatile content by using lateral combustion, and solves the problem of welding to secure fuel. Continuous burning. (See Patent Utility Nos. CN203731384 and CN203731385 for utility model patents).

The combustion mechanism of the above-described combustion apparatus is that the volatile matter is first precipitated by the heating of the biomass fuel, and the evolved volatile matter flows toward the combustion chamber with the gas flow, and is ignited by the high-temperature flame generated by the combustion flame to be combusted when passing through the combustion flame. In the above process, if the volatile matter is not sufficiently burned, it will be discharged into the air in the form of black smoke, causing environmental pollution.

Upon investigation, the inventors have further found that the key to solving the problem of efficient combustion and harmful emissions of the above-mentioned combustion materials having a high volatile content is whether the combustion of the volatile matter in the burner is sufficient. One solution proposed by the inventors in the above two patents (see the CN 203 731 385 patent) is that a regenerator is provided in the path of the volatiles flowing along the gas flow towards the combustion chamber. Since the regenerator is heated to a high temperature in the furnace, the volatile matter is easily ignited as it passes (or passes) through the gas stream. Another solution (see CN203731384 patent) is to provide a diversion wall in the path of the volatiles flowing along the gas flow toward the combustion chamber. The principle is that the volatiles of the solid fuel are discharged as the gas flows out of the stack. The lateral combustion flame generated by the combustion of the fixed carbon fuel under the guidance of the deflector wall is ignited by the combustion flame.

Tests have shown that the technical solutions of the above two patents can effectively solve the full combustion of volatiles under the steady state of combustion in the furnace. However, when the combustion state changes, for example, when it is necessary to adjust the combustion state or the fuel naturally enters When the material is uneven, there will be changes in combustion speed, air volume change, wind speed change, etc. The stable combustion state in the previous furnace inevitably changes, the combustion balance is broken, and in this case there will still be some volatiles in the case. It is emitted in the form of black smoke when it is not ignited. At this time, the operator is required to adjust the combustion state in the furnace to the equilibrium state in time to effectively prevent the black smoke from being discharged. In addition, the operation of this adjustment is performed passively after the black smoke has been emitted, so that the discharge of some harmful gases cannot be avoided. Moreover, the current adjustment operation still requires experienced personnel, so it is difficult to achieve unattended operation.

Therefore, it is necessary to provide a combustion device that can adjust the combustion balance according to the combustion state, and reduce the emission of harmful gases when the combustion device changes in the combustion state, thereby facilitating environmental protection.

Summary of the invention

The object of the present invention is to provide a combustion apparatus for a solid fuel, which can increase the probability that the volatile matter is ignited when the combustion state changes, and facilitate the full combustion of the volatile matter in the furnace, thereby changing the combustion state of the combustion device. Reduce the emission of harmful gases.

Another object of the present invention is to provide a solid fuel combustion apparatus, which can reduce the influence of the change of the combustion state in the furnace on the combustion of the volatile matter, realize the automatic balance adjustment of the combustion device, and is beneficial to realize the unattended operation of the combustion device. Fully automatic continuous combustion.

It is still another object of the present invention to provide a solid fuel combustion apparatus which achieves effective control of harmful gas emissions with the simplest structure.

In order to achieve the object of the above invention, the present invention provides a flow guiding wall which is disposed on a path through which a previous volatile matter of a tail gas outlet in a furnace of a combustion apparatus flows, guides a flow direction of a gas flow in the furnace; Two or more of the diversion walls are arranged on the path, and the volatiles are sequentially blocked by the diversion wall and guided to the flame below the vortex before being circulated until the volatiles are ignited. status.

The present invention also provides a solid fuel combustion apparatus comprising a furnace, the furnace is provided with an air inlet for supplying air to the furnace, and a solid fuel feed port, and the furnace is provided with a solid fuel which receives the solid fuel entering from the inlet. At the bottom of the material, a stack layer of solid fuel formed between the feed port and the bottom of the material, the furnace above the bottom of the pile is formed on the air inlet side on one side of the pile layer, opposite to the inlet side The other side is formed as a combustion side; the pile layer constitutes a partition between the inlet side and the combustion side; on the combustion side, a combustion chamber which is connected to the outlet of the exhaust gas is formed, and the combustion is performed before the exhaust outlet on the combustion side In the flow path of the partial airflow, two or more diversion walls are arranged at intervals, and the volatiles are sequentially blocked by the diversion wall and guided downward to the flame before flowing out of the exhaust gas outlet, so that the volatiles are all ignited. Flame state.

The working principle of the invention is that the solid fuel is input from the top inlet of the furnace, and is correspondingly received in the furnace inlet. From the bottom of the fuel entering the feed port, the fuel entering from the feed port forms a pile layer on the bottom of the pile, igniting the pile layer, and entering the wind from the inlet side of the pile layer, the wind is generally transversely worn. The pile layer passes through the combustion side of the pile layer, and the combustion flame of the pile layer burns toward the combustion chamber. The fuel gradually moves down as the volume becomes smaller, and the new fuel is automatically replenished to the pile layer under the action of gravity. After being heated, the volatiles are precipitated; most of the volatiles deposited by the wind pass through the pile layer and are first blocked by the first flow guiding wall and guided to the combustion flame below it, and advanced into the burning state; The other unburned volatiles are blocked by the next-stage diversion wall when driven by the wind, and are guided to the combustion flame below them, and are ignited and then enter the combustion state; until the volatile exhaust gas exits before the exhaust The combustion exhaust gas is discharged from the exhaust gas outlet; at the same time, the fixed carbon fuel after the volatile matter is ignited, carbon combustion is performed, and a new combustion flame is generated; after the ash generated after the burnout is discharged, the new fuel continues as the combustion proceeds. Supplementary stock , The combustion cycle is formed automatically.

The effect of the present invention is remarkable. First, the lateral air inflow of the upper layer is effectively precipitated as quickly as possible by the lateral air intake of the present invention. Most of the evolved volatiles are quickly ignited without direct flow to the exhaust gas outlet under the blocking and guiding action of the first-order diversion wall. When the combustion state in the furnace changes, part of the volatile matter is not ignited toward the exhaust gas outlet through the first flow guiding wall, and the lower first guiding wall again blocks and guides the unignited volatiles below it. The flame is ignited. Typically, during this process, the volatility of the volatiles through the two-stage diversion walls is substantially completely ignited. When the burner volume is large, the number of stages of the flow guiding wall can be appropriately increased to ensure sufficient combustion of the volatiles in the furnace. By adopting the multi-stage diversion wall structure of the invention, not only the combustion efficiency of the solid fuel can be greatly improved, but also the volatile matter can be effectively prevented from being discharged in the form of black smoke, and the high-efficiency clean combustion of the solid fuel with high volatile content is realized.

Secondly, in the present invention, when the combustion state in the furnace changes, the influence of the change of the combustion state in the furnace on the precipitation and ignition of the volatiles is reduced under the adjustment of the multi-stage diversion wall, and the automatic adjustment function of the combustion device is realized. The unmanned automatic continuous combustion state of the combustion device is realized.

Third, the present invention employs a simple multi-stage flow guiding wall structure, that is, it is possible to achieve effective control of harmful gas emissions, thereby achieving the object of the present invention.

In an alternative embodiment of the flow guiding wall of the present invention, the lower or lower portion of each of the flow guiding walls is formed with a passage through which the flame and the air flow pass.

In an alternative embodiment of the deflector wall of the present invention, the lower end of the deflector wall of the subsequent stage is lower than the lower end of the deflector wall of the previous stage. When the volatiles flow from the lower stage to the outlet of the exhaust gas, they are blocked by the lower diversion wall of the latter stage, which can effectively block the direct flow of volatiles to the exhaust gas outlet.

In a preferred alternative embodiment of the flow guiding wall of the present invention, the flow guiding wall is made of a heat storage material and constitutes a heat storage body. The flow guiding wall composed of the heat storage material itself has an extremely high temperature due to heat storage, and thus blocks the volatile matter. At the same time, a high-temperature environment is formed under and around the heat storage body, and the volatile matter is ignited by the high temperature to fully burn the volatile matter.

In an alternative embodiment of the combustion apparatus of the present invention, the stack layer is joined to the inner wall of the furnace at opposite sides between the inlet side and the combustion side to form a partition between the inlet side and the combustion side. So that the incoming air must pass through the stack layer and carry out the volatiles in the layer.

In an alternative embodiment of the combustion apparatus of the present invention, the lower or lower portion of each stage of the flow guiding wall is formed with a passage for the passage of flames and airflow.

In an alternative embodiment of the combustion apparatus of the present invention, each of the flow guiding walls is formed by a stepped structure.

In an alternative embodiment of the combustion apparatus of the present invention, the flow guiding wall is formed by the inner wall of the furnace portion.

In an alternative embodiment of the combustion apparatus of the present invention, a heat exchange device is disposed within the combustion chamber, the flow guide wall being formed by a portion of the side walls of the heat exchange device.

In an alternative embodiment of the combustion apparatus of the present invention, the bottom of the support is a closed structure that does not allow airflow through, preventing airflow through the bottom of the support into the stack. It can prevent harmful air leakage from entering the material layer from the bottom of the material body, thus achieving controllability of the air flow during combustion.

In an alternative embodiment of the combustion apparatus of the present invention, the upper surface of the bottom of the material is a slope that slopes downward toward the combustion side.

In an alternative embodiment of the combustion apparatus of the present invention, the bottom of the support is a furnace structure.

Experiments have shown that with the above-mentioned combustion furnace of the present invention, when the combustion state in the furnace changes, no manual intervention or adjustment is required, that is, sufficient combustion of the volatile matter can be realized, and the partial evaporation of the combustion state is effectively avoided. The smog is discharged in a black smoke manner to achieve a clean discharge of solid fuel combustion with a high volatile content. . Therefore, in the present invention, the volatile matter can be almost completely burned, and the combustion efficiency of the combustion furnace is over 95%, and substantially no black smoke emission can be achieved in any of the combustion states, so that the present invention can be changed in the combustion state. Under the circumstances, unattended. The combustion furnace based on the present invention can realize sufficient combustion of the volatile matter in the case where the combustion state in the furnace is changed only by increasing the number of stages of the number of the guide walls, thereby reducing the manufacturing cost and being convenient to use, thereby being volatile. The promotion and application of high solid fuels provides favorable conditions.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and it can be based on this without any creative labor for those skilled in the art. These figures take additional figures.

Figure 1 is a schematic structural view of a combustion apparatus of the present invention;

2 is a schematic structural view of an embodiment of a heat storage material of a flow guiding wall of a combustion apparatus according to the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figures 1 and 2;

4 is a schematic structural view of a combustion apparatus including a three-stage flow guiding wall according to the present invention;

Figure 5 is a schematic structural view of a combustion apparatus with a stepped structure guide wall according to the present invention;

Figure 6 is a schematic view showing the structure of a combustion apparatus with a heat exchange device according to the present invention;

Figure 7 is a schematic view showing the structure of a combustion device using a guide wall of a furnace inner wall structure according to the present invention;

Fig. 8 is a structural schematic view of a flow guiding wall with a gas flow passage structure according to the present invention.

Description of the figure:

a combustion device 100; a heat exchange device 200; an exhaust gas outlet 201;

Furnace 10; feed port 11; air inlet 12; material receiving bottom 14; feed hopper 15; furnace 17; air inlet side 101; combustion side 102; side wall surfaces 103, 104; two

opposite sides

161, 162 of the furnace;

Stacking layer 1; natural stacking slope of the pile layer 16;

Diversion wall 2; secondary diversion wall 21; tertiary diversion wall 22; air flow passage 23; air flow passage 231 disposed on the diversion wall

Combustion chamber 3; combustion chamber outlet 31;

Gray room 4;

Solid fuel 5; volatile matter 51; fixed carbon fuel 52 after volatilization; ash 53;

Ash discharge device 6;

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all 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.

Referring to Figures 1 to 7, the present invention provides a flow guiding wall 2 for a combustion apparatus, which is disposed on a path through which the preceding volatile matter 51 of the exhaust gas outlet 201 in the furnace 10 of the combustion apparatus 100 flows, guides the furnace The flow direction of the inner airflow is 10; the volatile matter 51 is disposed at intervals of two or more of the flow guiding walls 2, and the volatile matter 51 is sequentially blocked and guided by the diversion wall 2 before flowing to the exhaust gas outlet 201. It is ignited after the flame below it until the volatiles 51 are ignited to a flame state.

The combustion apparatus 100 including the above-described multi-stage flow guiding wall 2, as shown in Figs. 1 to 7, includes a furnace 10 provided with an air inlet 12 for supplying air to the furnace 10 and solid fuel The feed port 11 is provided in the furnace 10 with a receiving bottom 14 for receiving the solid fuel 5 entering from the feed port 11. a stack layer 1 of solid fuel 5 formed between the feed port 11 and the bottom 14 of the load, the furnace 10 above the bottom 14 of the stock is formed on the one side of the stack 1 as the inlet side 101, The opposite side of the wind side 101 is formed as a combustion side 102; the pile layer 1 constitutes a partition between the inlet side 101 and the combustion side 102; and the combustion side 102 is formed with combustion that is conducted to the exhaust outlet 201 The chamber 3 is provided with two or more flow guiding walls 2 at intervals in the flow path of the volatile gas 51 before the exhaust gas outlet 201 of the combustion side 102, and the volatiles 51 are sequentially guided by the exhaust gas before exiting the exhaust gas outlet 201. The wall 2 is blocked step by step and directed to the downward flame to be ignited; until the volatiles 51 are all ignited to burn out in the combustion chamber.

The combustion mechanism of the combustion apparatus of the present invention: igniting the stack layer 1 and introducing air from the inlet side 101 of the pile layer 1, the wind passing transversely through the stack layer 1 and exiting from the combustion side 102 of the pile layer 1 The combustion flame of the pile layer 1 is burned toward the combustion chamber 3, and the fuel 5 gradually moves downward as the volume becomes smaller, and the new fuel 5 is automatically replenished to the pile layer 1 by gravity to be heated to precipitate volatiles 51; the wind flow belt Most of the volatiles 51 which are deposited pass through the pile layer 1 and are first blocked by the first flow guiding wall 2 and guided to the combustion flame below them, first entering the combustion state; other volatiles not burning When the air flow continues to move forward, it is blocked by the next-stage diversion wall 21, and is guided to the combustion flame below it, and is ignited to enter a combustion state; until the volatile matter 51 is completely burned before the exhaust gas outlet 201; The combustion exhaust gas is discharged from the exhaust gas outlet 201; at the same time, the fixed carbon fuel 52 after the volatile matter 51 is precipitated is ignited, and carbon combustion is performed to generate a new combustion flame; the ash 53 generated after the burnout is discharged; as the combustion proceeds, the new Fuel 5 is continuously replenished on the stack layer 1, forming no labor required Automatic pre-combustion cycle.

Since the lateral air intake of the present invention effectively precipitates the volatile matter 51 in the upper fresh fuel 5 as quickly as possible. Most of the evolved volatiles 51 are quickly ignited by the blocking and guiding action of the first-order deflector wall 2 and do not flow directly to the exhaust gas outlet. When the combustion state in the combustion apparatus 100 changes, part of the volatile matter 51 is not ignited through the first flow guiding wall 2 and continues to flow toward the exhaust gas outlet 201, at which time the lower first guiding wall 21 will not be ignited again. The volatile matter 51 blocks and directs the flame below it to be ignited. Normally, in this process, the volatile matter 51 has been substantially completely ignited by the action of the above two-stage flow guiding wall 2. When the volume of the burner unit 10 is large, the number of stages of the flow guiding wall 2 can be appropriately increased, and the volatile portion 51 can be sufficiently burned in the furnace 10, which not only greatly improves the combustion efficiency of the solid fuel, but also plays an important role. It is effective to prevent the volatile matter 51 from being ignited and discharged directly in the form of black smoke.

The inventors have confirmed through extensive experiments that the combustion apparatus of the present invention changes when the combustion state in the furnace 10 changes, for example, when it is necessary to adjust the combustion state (lower the combustion temperature), the fuel is naturally fed unevenly, and thus When the burning speed changes, the air volume changes, the wind speed changes, etc., the partial combustion is partially destroyed when the stable combustion state in the previous furnace 10 is destroyed. The portion 51 cannot be ignited in time and rapidly flows into the exhaust gas outlet 201, is blocked by the subsequent stage or subsequent multi-stage deflector wall 21 (22), and is directed to the flame below it to be ignited again, through multiple stages. After blocking and igniting, the volatile matter in the furnace is substantially fully burned, effectively avoiding the occurrence of insufficient direct combustion of the volatiles during the change of the combustion state, thereby realizing a solid having a high volatile content of 51. Efficient combustion and clean emissions of fuel 5.

As shown in Figs. 1 to 7, in the present invention, a lower end or a lower portion of each of the flow guiding walls is formed with a passage 24 through which a flame and a gas flow pass. Since the gas flow passage 24 is formed along the naturally formed pile gradient, the volatile matter 51 blocked by the flow guiding wall 2 is guided to the pile slope, and is quickly ignited by the flame on the surface of the pile slope, thereby avoiding the volatile matter 51. The direct flow to the tail exit 201 is discharged without being ignited.

In an alternative embodiment of the invention, the lower end of the deflector wall of the subsequent stage is lower than the lower end of the deflector wall of the previous stage, and it is easier to form an air flow passage 24 along the slope of the stack. Since the volatiles are in the furnace 10, the flow rate is very fast. When the lower end of the

rear stage wall

21 or 23 is lower than the lower end of the front stage diversion wall 2, the volatile matter 51 flowing out of the lower stage diversion wall 2 can be forced to change its direct flow to the tail exit 201. , again guided to the surface of the pile slope and ignited. Thereby, the situation in which the volatile matter 51 is directly discharged under the suction of the tail gas outlet is effectively prevented.

In a preferred embodiment of the invention, the

flow guiding wall

2 or 21 or 22 is constructed of a heat storage material, as shown in Figures 2 and 4 . The

flow guiding walls

2, 21, 22 composed of the heat storage material itself have an extremely high temperature, so that the flow guiding wall in the present embodiment has the effect of blocking the volatile matter 51 and igniting the volatile matter 51 by its own high temperature. .

1 and 2, in conjunction with FIG. 3, in the present invention, the opposite side surfaces 161 and 162 of the stack layer 1 between the inlet side 101 and the combustion side 102 are in contact with the inner wall of the furnace 10, thereby forming A separator between the inlet side 101 and the combustion side 102. The wind flow entering from the air inlet side 101 must pass through the new fuel 5 above the pile layer 1, and the volatile matter 51 in the new fuel 5 is quickly precipitated under the high temperature of the furnace, and the pile layer 1 is taken out by the wind. It enters the combustion side 102. It is then guided by the deflector wall 2 to the surface flame on the combustion side of the stacking slope and is quickly ignited.

The number of stages of the flow guiding wall of the present invention can be appropriately selected according to the size of the volume of the furnace 10 or the kind of the fuel 5 and the volatile matter 51 which can be generated during the adjustment, and the like, such as the number of stages of the flow guiding wall 2, such as The three-stage diversion wall shown in Figure 4 can also be more (not shown).

In an alternative embodiment of the present invention, as shown in FIGS. 1 to 7, a lower passage of each of the flow guiding walls 2 provided in the combustion apparatus 100 is formed with a passage through which a flame and a gas flow pass. This passage is formed by the gap between the lower end of the deflector wall 2 and the stack slope 1. Alternatively, as shown in Fig. 8, an aperture through which the flame and the airflow pass is formed in the lower portion of the flow guiding wall 2 to constitute the air flow passage 231. It is also possible to combine the gas injection passage 23 formed by the gap between the flow guiding wall 2 (21, 22) of the lower air flow passage 231 and the pile slope 1 below it.

In an alternative embodiment of the present invention, as shown in FIG. 1 to FIG. 7, the lower end of the deflector wall 21 (22) of the subsequent stage of the multi-stage flow guiding wall 2 disposed in the combustion apparatus 100 is at the previous stage. The lower end of the deflector wall 2 (21). Naturally, an air flow path is formed along the slope shape of the pile.

An alternative embodiment of the present invention, as shown in Fig. 7, is provided in a multi-stage flow guiding wall 2 in the combustion apparatus 100, and each of the flow guiding walls 2 (21 or 22) is constituted by a stepped structure. It is advantageous to simplify the structure of the deflector wall.

As shown in Fig. 7, in the present invention, the flow guiding wall 2 provided in the combustion apparatus 100 is constituted by the inner wall of the furnace portion, and the structure is simpler.

As shown in FIG. 6, a heat exchange device 200 is disposed in the combustion chamber 3, and the flow guide wall 2 is composed of a part of the side wall of the heat exchange device 200.

As shown in FIG. 1 and FIG. 2, in the present invention, the bottom portion 14 of the material is a closed structure that does not allow airflow to pass through, preventing airflow from entering the pile layer 1 through the bottom portion 14 of the material to prevent harmful airflow from the bottom of the pile layer. Entering into the stack layer 1 enables effective control of the flow entering the stack layer 1.

In the above embodiment of the closed-feed bottom structure, the upper surface of the receiving bottom 14 is a slope that slopes downward toward the combustion side 101. The ash at the end of the bottom 14 of the feed automatically falls into the ash chamber below it. The ash of the bottom layer of the pile layer 1 can be periodically removed by the ash removing device 6 (the ash removing device has been separately applied).

In the embodiment shown in Figures 4 to 7, the bottom portion 14 of the material is a furnace 17 structure. In the present embodiment, since the conventional grate 17 is employed as the receiving bottom portion 14, a closed structure is employed as much as possible below the grate 17 to prevent harmful air leakage from entering the stacking layer 1 by the grate 17.

With the above-described deflector wall structure of the present invention and its combustion apparatus, it is possible to ensure that the volatile matter 51 is completely ignited and substantially burned out in the furnace 10 without any manual intervention when the combustion state in the furnace is changed. The problem that the volatile matter is discharged in a black smoke manner due to a change in the combustion state is effectively avoided. According to the present invention, for a solid fuel having a high content of a high fraction, the volatile matter can be almost completely burned, the combustion efficiency is as high as 95% or more, and there is no black smoke emission, and a solid fuel having a high volatile content is realized. Clean emissions of combustion.

The invention only utilizes the structure of the very simple multi-stage diversion wall, that is, realizes the automatic ordered combustion in all combustion states of the combustion state change and the stable combustion, so that the unattended natural combustion state can be completely realized, and the manpower is saved. . In addition, the invention has the advantages of simple structure, low manufacturing cost and convenient use, and provides favorable conditions for popularization and application of a solid fuel with high volatile content.

The detailed description of the various embodiments described above is intended to be illustrative of the present invention in order to provide a better understanding of the present invention, but these descriptions are not to be construed as limiting the invention, in particular, The various features described in the embodiments can also be combined with each other to form other embodiments, except that there is a clear The description should be understood to be applicable to any one embodiment, and is not limited to the described embodiments.

Claims

A flow guiding wall is disposed on a path through which a previous volatile matter flows out of a tail gas outlet in a furnace of the combustion device, and guides a flow direction of the airflow in the furnace; wherein the volatile matter flows through the path and is provided with two spaces In the above-mentioned flow guiding wall, the volatile matter is sequentially blocked by the flow guiding wall and guided to the flame below it, and then ignited until the volatile matter is ignited in a flame state before flowing to the exhaust gas outlet.
The flow guiding wall according to claim 1, wherein a lower end or a lower portion of each of the flow guiding walls is formed with a passage through which a flame and a gas flow pass.
The deflector wall of claim 1 wherein the lower end of the deflector wall of the subsequent stage is lower than the lower end of the deflector wall of the preceding stage.
The flow guide wall according to any one of claims 1 to 3, wherein the flow guiding wall is made of a heat storage material.
A solid fuel combustion apparatus includes a furnace, the furnace is provided with an air inlet for supplying air to the furnace, and a solid fuel feed port, and a bottom of the furnace for receiving solid fuel entering from the inlet is provided in the furnace, solid a stack layer of fuel formed between the feed opening and the bottom of the receiving material, the furnace above the bottom of the receiving material being formed as an inlet side on one side of the stacking layer, and the other side opposite the inlet side being formed as a combustion side; the pile layer constitutes a partition between the inlet side and the combustion side; a combustion chamber that is connected to the exhaust outlet is formed on the combustion side, and a flow path of the volatile gas flow before the exhaust outlet on the combustion side is formed Above, two or more diversion walls are provided at intervals, and the volatiles are sequentially blocked by the diversion wall and guided to the downward flame to be ignited before flowing out of the exhaust gas outlet; until the volatiles are all ignited in a flame state. Burning out of the combustion chamber.
A combustion apparatus for a solid fuel according to claim 4, wherein said stack layer is in contact with the inner wall of the furnace at opposite sides between the inlet side and the combustion side, thereby constituting the inlet side and the combustion side. The separator between the two.
A solid fuel combustion apparatus according to claim 4, wherein a lower end or a lower portion of each of the flow guiding walls is formed with a passage through which the flame and the air flow pass.
A combustion apparatus for a solid fuel according to claim 4, wherein a lower end of said flow guiding wall of said subsequent stage is lower than a lower end of said first stage flow guiding wall.
A combustion apparatus for a solid fuel according to claim 5 or 8, wherein each of said flow guiding walls is constituted by a stepped structure.
A solid fuel combustion apparatus according to claim 4, wherein said flow guiding wall is constituted by an inner wall of the furnace portion.
A combustion apparatus for a solid fuel according to claim 4, wherein a heat exchange device is disposed in the combustion chamber The deflector wall is formed by a portion of the side wall of the heat exchange device.
A solid fuel combustion apparatus according to claim 5, wherein said flow guiding wall is made of a heat storage material to constitute a heat storage body.
The solid fuel combustion apparatus according to claim 5, wherein the bottom of the receiving material is a closed structure that does not allow airflow to pass through, preventing airflow from entering the stacking layer through the bottom of the receiving material.
A combustion apparatus for a solid fuel according to claim 12, wherein said upper surface of said bottom portion of said material has a slope which is inclined downward toward the combustion side.
A solid fuel combustion apparatus according to claim 5, wherein a passage for the passage of the flame and the airflow is formed between the lower end of the flow guiding wall and the upper surface of the stack.
A combustion apparatus for a solid fuel according to claim 5, wherein said bottom of said receiving material is a furnace structure.