WO2009043211A1

WO2009043211A1 - Solid fuel combustion furnace

Info

Publication number: WO2009043211A1
Application number: PCT/CN2007/070820
Authority: WO
Inventors: Zhanbin Che
Original assignee: Zhanbin Che
Priority date: 2007-09-29
Filing date: 2007-09-29
Publication date: 2009-04-09

Abstract

A solid fuel combustion furnace includes a furnace chamber (1) formed with a solid fuel zone (12) and a gaseous zone (13). A grate (14) is disposed in the lower part of the solid fuel zone (12). An upper outlet (15) is formed in the upper end of the gaseous zone (13). An air supply passage (2) is disposed outside the furnace chamber (1). The outlet of the air supply passage (2) is located at the position of the upper outlet (15).

Description

Instructions Solid fuel burner

#细 or

[1] The present invention relates to a combustion apparatus for burning a solid fuel, and more particularly to a solid fuel combustion furnace.

[2] It is well known that the combustion process of solid fuels is such that: dry-dry distillation-reduction-oxidation-combustion. There are two requirements for fuel: one is the use of dusting or shot-fire combustion that requires specification of fuel shape and energy density; the other is that extensive use of fuel shape and energy density is not required. From the high evaluation of scientific, economic, energy-saving and environmentally-friendly use of energy, the first method of use is reasonable, so that the fuel can effectively achieve dry-dry distillation-reduction-oxidation-combustion, but the cost is relatively high. Existing combustion furnaces are limited to economies of scale and can only meet the needs of large and medium-sized boilers. Compared with small and medium-sized boilers and civil furnaces that account for the majority of energy consumption, solid fuel burners (especially industrial boilers and civil stoves of less than five tons) that are not standardized in fuel shape and density are based on solid fuels in furnaces. Designed and manufactured with the concept of direct combustion and I or gasification.

[3] The direct-burning burner generally comprises a furnace, a furnace and a ash collection chamber disposed below the furnace, and the solid fuel is directly added to the furnace above the furnace for combustion. In the direct combustion combustion furnace, in the combustion process of the solid fuel, the wind and the combustion products entering from the lower side of the furnace flow in the same direction and directly discharge the high temperature furnace, because the flue gas stays in the furnace for a short time and is not uniformly mixed with the air. The combustible components in the flue gas are not fully burned, resulting in the generation of black smoke and a decrease in combustion efficiency. At the same time, in the direct combustion furnace, synchronous and orderly combustion of fuels of different shapes and energy densities is difficult to achieve, the temperature balance in the furnace is poor, the ash and fuel of the fuel cannot be stratified, and the volatiles are not fully combusted. In the case of the combustion residue, the dust is directly discharged into the exhaust gas with the strong hot air flow, causing pollution pollution.

[4] The combustion furnace of gasification combustion is usually separated from gasification and combustion. In the process of gasification of solid fuel, the process of tar filtration is complicated, the cost is high, and the leakage of combustion gas may cause safety hazards, resulting in Not suitable for the economic and security needs of ordinary energy use.

[5] In addition, both of the above-mentioned two types of combustion furnaces have problems in that large-volume fuels cannot be burned out, resulting in forced ashing and coking of the grate. And, in the case of forced ash, a part of the fuel is taken away, Reduce combustion efficiency.

[6] The above factors determine that small and medium-sized boilers and civil furnaces, which account for the vast majority of energy consumption, are still in a state of high energy consumption, low energy efficiency, high pollution, and low environmental protection.

[7] Therefore, it is necessary to provide a new type of solid fuel burner to overcome the above-mentioned drawbacks of existing solid fuel burners.

[8] The technical problem to be solved by the present invention is to provide a solid fuel combustion furnace which can improve combustion efficiency and reduce emission pollution.

[9] The above technical problem of the present invention can be solved by the following technical solution: A solid fuel burning furnace includes a furnace, and a feeding port for feeding the inside of the furnace is provided in the upper portion of the furnace, in the furnace Forming a solid fuel zone and a gas zone in communication with the solid fuel zone, a furnace is disposed at a lower end of the solid fuel zone, an upper outlet is formed at an upper end of the gas zone, and a ventilation channel is disposed outside the furnace The outlet of the air supply passage is located at the upper outlet position to form a gaseous combustion port at the upper outlet position.

[10] In an optional embodiment of the present invention, a burner may be disposed on the gas burner port, and the burner includes a high temperature heat storage body extending upward from the combustion port by a predetermined height, and the high temperature storage body is stored at the high temperature A plurality of through holes are distributed in the hot body.

[11] In an optional embodiment of the present invention, an open flame may be disposed in the furnace, the open flame is a tubular passage extending from the furnace upward toward the gas region, and the lower end of the tubular passage faces or connects On the furnace, the upper port is located in the gaseous zone.

[12] In a preferred embodiment of the invention, the feed port is disposed at the top of the furnace.

[13] With the above-described solid fuel burning furnace of the present invention, the effect is remarkable: 1) since the upper outlet position at the upper end of the gaseous region has a secondary air outlet, the volatile matter generated by the solid fuel region can be at the upper outlet position It is mixed with air again for high-temperature combustion, which improves combustion efficiency and reduces harmful gas emissions. In particular, after the burner is disposed at the gas burner port at the upper exit position, the burner can reduce the flow rate of the gas reaching the combustion port, and the combustible volatiles are sufficiently mixed with the air at the position of the burner port to be fully combusted, thereby further improving Combustion efficiency.

[14] 2) Since there is a tubular flame extinguisher extending from the furnace to the gas zone in the furnace, the wind under the furnace can enter the gas zone through the flame extinguisher, and oxygen is supplied to the combustible gas in the gas zone to volatilize In the open flame A high-temperature open flame is formed between the upper port of the device and the upper outlet of the gas region, which ensures sufficient high-temperature combustion of the volatile matter generated by the solid fuel, further improves combustion efficiency and reduces harmful gas emissions. In particular, after the air supply pipe is disposed at the lower end of the flame opener, the air supply pipe can further fill the air in the air supply area into the flame extinguisher, thereby providing more oxygen for the gas region of the port on the open flame. It is more conducive to the formation of high temperature open flames, thereby improving combustion efficiency.

[15] 3) Since the air can be blown up through the air inlet passage and the air is blown through the open flame to increase the combustion efficiency, the primary air volume entering from the furnace can be controlled to be small, so that the wind speed in the furnace is upward. Declining, the same fuel is burned from bottom to top, so that the fuel on the upper surface of the solid fuel zone is always in a dry state rather than the burned ash, ensuring that the ash does not rise to the upper outlet and is discharged into the atmosphere with the exhaust gas. Reduced emissions.

[16] 4) Since the feed port is placed at the top of the furnace, the same fuel can be sieved to effectively avoid emptying, thereby increasing the pressure of the fuel on the furnace and reducing the volume and support of the fuel during the combustion process. The weakening of the force and the replenishment of the crucible, so that the ash generated in the combustion process of the fuel is squeezed to the gap of the furnace and discharged, so that the solid fuel can be fully burned, the problem of forced dusting is avoided, and the combustion efficiency is improved.

Country deletion

The following drawings are merely illustrative of the structure of the invention and are not intended to limit the scope of the invention. among them,

1 is a schematic structural view of Embodiment 1 of a solid fuel combustion furnace of the present invention;

[19] Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention; FIG.

Figure 4 is a top plan view of a burner of a solid fuel combustion furnace of the present invention;

Figure 5 is a schematic structural view of a solid fuel combustion furnace according to Embodiment 2 of the present invention;

[23] Figure 6 is a cross-sectional view taken along line B-B of Figure 5;

Figure 7 is a schematic view showing a combination structure of a squirrel-cage type bin and a tubular passage according to a second embodiment of the present invention; [25] Figure 8 is another squirrel-cage type bin of the second embodiment of the present invention. Schematic diagram of a combined structure of a tubular passage; [26] FIG. 9 is a schematic view showing a combined structure of a squirrel cage and a tubular passage according to Embodiment 2 of the present invention; [27] FIG. Schematic diagram of the furnace structure;

Figure 28 is a schematic view showing the structure of a burner of a solid combustion combustion furnace of the present invention; Figure 12 is a schematic view showing another structure of a burner of a solid combustion combustion furnace of the present invention;

Figure 13 is a schematic view showing the structure of still another burner of the solid fuel combustion furnace of the present invention.

difficult

As shown in FIGS. 1-9, the solid fuel combustion furnace of the present invention includes a furnace 1 in which a feed port 11 for feeding into the furnace 1 is provided, and a furnace 11 is formed in the furnace 1 a solid fuel zone 12 and a gas zone 13 communicating with the solid fuel zone, a furnace 14 at a lower end of the solid fuel zone 12, and an upper outlet 15 at an upper end of the gas zone 13 outside the furnace 1 A supply air passage 2 is provided, and the outlet 21 of the air supply passage is located at the upper outlet 15 to form a gaseous combustion port 60 at the upper outlet 15. There may be a ash collecting chamber 4 below the furnace 14, and a primary damper 41 on one side of the ash collecting chamber 4, and air entering from the primary damper 41 may be sent into the furnace ₁ through the furnace ₁₄ to form a primary air supply system. .

[32] In the combustion furnace of the present invention, solid fuel is introduced into the furnace 1 from the feed port 11 during use, and the primary air enters from the furnace 14 at the lower end of the solid fuel zone 12, so that the solid fuel is burned at a low temperature. The generated volatile matter enters the gaseous region 13, and the secondary air supplied from the air supply passage 2 passes through the secondary air outlet 21 to reach the upper outlet 15 at the upper end of the gaseous region 13, so that the secondary air is mixed with the combustible gas in the volatile portion. At high temperature combustion, a combustion port 60 that can be used to heat a heat exchanger such as a boiler or a boiler is formed at the upper outlet 15 position. In the above combustion process, the combustible gas generated by the solid fuel is mixed with the secondary air at the upper outlet 15 position, and the high-temperature combustion is performed again, thereby improving the combustion efficiency and reducing the emission of harmful gases. At the upper outlet 15 position, a cooktop for placing a heat exchanger, a flue, and the like can be disposed as in the existing combustion furnace, and the specific structure can be designed according to the needs of the heat exchanger, which is not the technical point of the present invention. This is not detailed.

[33] In the present invention, only from the viewpoint of feeding, as long as the position of the feeding port 11 is higher than the furnace 14 by a certain distance, the supply of the solid fuel region above the furnace 14 can be realized, and thus the feeding port 11 It can be placed on the side of the upper part of the furnace 1 or on the top of the furnace 1. However, from the viewpoint of dust discharge, the feed port 11 is preferably placed above the furnace 14, such as the top of the furnace 1. Thus, the solid fuel continuously fed from the feed port 11 is accumulated on the original fuel, which increases the pressure of the fuel on the furnace 14, so that the volume of the fuel is reduced with the volume of the combustion process and the support force is weakened and the helium is replenished, thereby The ash generated during the combustion of the fuel is squeezed to the gap of the furnace 14 to be discharged, so that the solid fuel can be fully burned, the problem of forced dusting is avoided, and the combustion efficiency is improved.

[34] In the present invention, as an alternative embodiment, as shown in FIG. 1 to FIG. 3, FIG. 5, and FIG. 6, in the furnace 1 The outer casing 5 may be sleeved, and the secondary air inlet passage 2 may be formed between the outer casing 5 and the outer wall of the furnace 1, and a secondary damper 22 for inlet air may be opened at a lower portion of the outer casing 5. Thus, since the inlet passage 2 of the secondary air is formed in the space between the outside of the furnace 1 and the outer casing 5, the secondary air entering from the secondary damper 22 can be preheated by the heat radiated from the outer wall of the furnace 1 and then supplied to the upper air. The outlet 15 is mixed and burned with the combustible gas, thereby effectively utilizing the heat lost by the furnace 1 and improving the utilization of heat generated by the combustion of the fuel.

[35] With the solid fuel combustion furnace of the present invention, the solid fuel fed from the feed port 11 is sequentially dropped onto the furnace 14 by gravity, and is dried-retorted-reduced in the solid fuel zone 12 of the furnace 1. The combustion temperature and speed of the solid fuel zone 12 can be adjusted by the primary damper 41. Generally, the amount of wind is less than that required for combustion, so that the fuel is in an anoxic dry distillation state; the combustible gas generated by the solid fuel zone 12 enters the gaseous zone. The high temperature open flame temperature provided by the combustible gas and the open flame device 3 and the preheated high temperature air of the air supply passage 2 achieve sufficient oxidation-burning at the position of the upper outlet 15.

[36] In the present invention, the area of the furnace 14 can be much larger than the area of the upper outlet 15, and since the secondary air can be supplied to the upper outlet position through the air supply passage 2, the furnace 1 can be controlled by controlling the air volume of the primary air. The wind speed in the inner direction decreases. In this way, the fuel is burned layer by layer from bottom to top, so that the fuel on the surface of the solid fuel zone 12 is always in a dry state rather than the burned ash, thereby avoiding the ash rising and discharging with the exhaust gas, and also avoiding the ash coking.

The invention will now be described in more detail by way of several embodiments.

[38] Implementation 1

As shown in FIG. 1 to FIG. 4 , in the embodiment, the feeding port 11 can be placed on top of the furnace 1 above the furnace 14 , and the feeding port 11 is directly connected to the furnace 1 , thereby The solid fuel fed from the feed port 11 can fall directly into the bottom of the furnace 1, and is deposited as a solid fuel zone 12 in the lower portion of the furnace 1, and a gas zone 13 is formed in the upper portion of the furnace 1 above the solid fuel zone 12.

In a modification of the embodiment, as shown in FIGS. 3 and 4, a burner 61 may be disposed on the gaseous combustion port 60, and the burner 61 includes a predetermined upward extension from the combustion port 60. The high-temperature-resistant heat storage body 62 has a plurality of through-holes 63 that are distributed through the high-temperature heat storage body 62. Thus, the airflow reaching the upper outlet 15 is blocked by the burner 61, and the flow velocity can be effectively reduced, and the combustible volatiles can be sufficiently mixed with the air at the position of the burner port 60 to be fully combusted, thereby further improving the combustion efficiency. Moreover, after the burner 61 is used, the distribution of the combustion flame through the plurality of air outlets 63 of the burner 61 is relatively uniform. Uniform, thereby facilitating heating of the heat exchanger above the burner 61. The high temperature heat storage body 62 of the burner 61 may be made of a high temperature resistant metal material or a high temperature resistant ceramic material, and may of course be made of other materials as long as it can withstand high temperatures and heat storage.

In this modification, the shape of the burner 61 can be designed according to the condition of the different heat exchangers to be heated, and is not limited herein. As shown in Figs. 3 and 4, in a specific example, the high temperature heat storage body 62 of the burner 61 is formed in a cylindrical shape, and the air outlet 63 penetrates the cylindrical upper and lower surfaces.

As shown in FIG. 11 to FIG. 13, as another embodiment of the burner 61, the high temperature heat storage body 62 may be a hollow structure having a lower end opening 621, and the lower end opening 621 is connected to the Gaseous burner port 60. In this way, the lower surface of the high-temperature heat storage body 62 is formed in a shape that is upwardly supplied, and the area thereof is greatly increased, so that more air outlet holes 63 can be opened in the thickness direction of the high temperature heat storage body 62, so that the air outlet holes 6 are provided. The total area of 3 is increased; for a burner that requires the same total area of the outlet 63, the structure can be provided with a smaller burner 60 than the flat surface of the high temperature regenerator 62, thereby further Improve combustion efficiency. With respect to such a burner 61, as long as it is a hollow structure having a lower end opening 621, the above-described effect of improving combustion efficiency can be attained, and the specific shape thereof is not limited. For example, as shown in FIG. 11, the shape of the hollow high-temperature heat storage body 62 is a shape of a vertebral column; as shown in FIG. 12, the shape of the hollow high-temperature heat storage body 62 is a circle. An example of the arch shape is an example in which the shape of the hollow high-temperature heat storage body 62 is tapered as shown in FIG.

[43] As shown in FIG. 1, in another modification of the embodiment, the burner 61 may not be provided with the burner 61, and the airflow reaching the upper outlet 15 may be mixed with the secondary air. A combustion flame is generated at the position of the burner port 60, and the heat exchanger to be heated may be directly disposed above the combustion port 61 and heated by the combustion flame at the position of the burner port 60.

As shown in FIG. 1 to FIG. 3, in a preferred embodiment of the present embodiment, an open flame device 3 may be disposed in the furnace 1 and the open flame device 3 includes a tubular passage 31. The tubular passage 31 The lower port 311 is coupled to the furnace 14, and the tubular passage 31 extends upwardly from the lower port 311 toward the gaseous region 13 such that the upper port 312 of the tubular passage 31 is located within the gaseous region 13. A venting hole 32 may also be provided in the pipe wall of the tubular passage 31. Thus, during the combustion process, the primary air below the furnace 14 can enter the gaseous region 13 through the flame extinguisher 3, providing oxygen to the combustible gas in the volatile portion of the gaseous region 13, allowing the volatiles to be on the open flame device 3. A high temperature open flame is formed between the port 312 and the upper outlet 15 of the gaseous zone 13, ensuring the generation of a solid fuel. The high temperature combustion of the parts further improves the combustion efficiency and reduces harmful gas emissions. In addition, since the air is blown to the upper outlet 15 through the inlet passage 2 of the secondary air and the air is blown to the gaseous region 13 through the open flame device 3, the combustion efficiency is improved, so that the amount of primary air entering from the furnace 14 can be controlled to be small. The wind speed in the upward direction of the furnace 1 is lowered, and the fuel is burned layer by layer from the bottom to the top, so that the fuel located on the upper surface of the solid fuel zone 12 is always in a dry state instead of the burned ash, ensuring that the ash does not rise to the upper outlet 15 And with the exhaust gas discharged into the atmosphere, it also reduces emissions.

In a preferred embodiment of the present embodiment, as shown in FIG. 3, the flame extinguisher 3 may further include a supplemental air duct 33, and the upper port 331 of the supplemental air duct 33 extends into the tubular passage 31. The lower port 311, the lower port 332 of the supplemental air duct 33 is connected to a supplemental air area 7, and the air is filled into the tubular passage 31 through the air supply duct 33. Thus, the supplemental air passing through the supplemental duct 33 reaches the upper port 312 position of the gaseous region 13 via the tubular passage 31, providing more oxygen for combustion of the open flame and combustible gas at the upper port 312 position, further improving Combustion efficiency. In this embodiment, the air supply area 7 can be further independent of the ash collection chamber 4, and a separate air supply door 71 is provided, so that the air supply valve 71 can be controlled to enter the air supply duct 33. The amount of wind. Moreover, since the air supply area 7 is independent of the ash collection chamber 4, after the combustion furnace of the present invention is suspended, the primary damper 41 and the secondary air inlet passage 2 can be closed, and only the damper 71 is kept open, so that Not only can the position of the combustion port 60 be stopped or the flame combustion can be reduced, but also the position of the upper port 312 of the tubular passage 31 of the open flame device 3 can be kept open, so that the combustion furnace can not extinguish the fire during the suspended use, thereby avoiding the user. It is convenient for users to use 吋 again for firing.

As shown in FIG. 3, in a preferred embodiment of the present embodiment, the area of the lower port 311 of the tubular passage 31 constituting the open flame device 3 is preferably larger than the area of the upper port 312 to improve the entry into the tubular passage. The internal wind speed enables a part of the wind to enter the gas zone 13 through the upper port 312, thereby igniting the flammable volatiles outside the upper port 32 of the flame opener 3, generating a high temperature open flame, providing favorable conditions for the full combustion of the combustible volatiles. . As a specific alternative example, as shown in Fig. 3, the tubular passage 31 of the open flame device 3 may be a tapered passage that is large and small.

In the preferred embodiment, the upper port 312 of the tubular passage 31 can face the upper outlet 15 so that the open flame generated at the position of the upper port 312 reaches the position of the upper outlet 15 with the air flow, at the position of the combustion port 60. The formation of a combustion flame provides favorable high temperature conditions. As an alternative embodiment, as shown in FIG. 3, the tubular passage 31 constituting the flame opener 3 may be provided with the vent hole 32 only on the pipe wall facing the feed port 11 side. Thus, a portion of the air that has entered the tubular passage from the lower port 311 of the open flame by the flame extinguisher 3 is supplied through the vent hole 32 to the solid fuel toward the side of the feed port 11 so that it can be sufficiently burned.

In the present embodiment, since the gaseous region 13 is located above the solid fuel zone 12, air entering the tubular passage 31 of the open flame 3 from below the furnace 14 is supplied to the gaseous zone 12 outside the upper port 312, The gaseous volatiles outside the upper port 3 2 are ignited to generate a high-temperature open flame, and the high-temperature open flame reaches the position of the combustion port 60 formed at the position of the upper outlet 15 with the air flow, and is remixed with the secondary air to fully burn the remaining combustible volatiles in the air flow. Thereby improving combustion efficiency and reducing harmful gas emissions.

[50] In the present embodiment, the furnace 14 at the bottom of the furnace 1 may be provided with a flow guiding slope 141 at a position opposite to the feeding port 11 so that the solid fuel falling from the feeding port 11 can be at the flow guiding slope. The flow guiding of 141 is relatively easy to distribute to various portions of the furnace 14, thereby forming a solid fuel zone 12 in the lower portion of the furnace 1 above the furnace 14.

As shown in FIG. 3, in the present embodiment, a plurality of water spouts 8 can be further disposed under the furnace 14, and the water spouts 8 can spray water toward the solid fuel on the furnace 14. . Thus, when the temperature on the furnace 14 is too high, water can be sprayed through the water nozzle 8, thereby lowering the temperature of the solid fuel on the furnace 14, avoiding excessive temperature and causing coking, and at high temperatures. After the water is sprayed on the solid fuel, water gas can be generated, thereby further improving the combustion efficiency.

[52] In order to facilitate the detection of the temperature of the solid fuel zone 12 on the furnace 14, a thermometer 9 capable of detecting the temperature of the solid fuel zone 12 on the furnace 14 may be provided below the furnace 14 so as to The temperature sensor 9 measures the problem to control the water spout 8 to spray water. As a specific example, the thermometer 9 can be an infrared thermometer.

[53] Implementation 2

As shown in FIG. 5 to FIG. 9 , in the embodiment, the feeding port 11 can also be placed on the top of the furnace 1 , and a feeding box 16 can be connected below the feeding port 11 . The opposite ends 161, 162 of the side wall of the tank 16 are in contact with the inner wall of the furnace 1, thereby dividing the furnace space 1 outside the tank 16 into two parts, wherein a part of the furnace space 101 communicates with the lower portion of the furnace 14 to form For the inlet portion 17, another portion of the furnace space 102 is closed at the bottom to form a gaseous region 13, and at the upper end of the gaseous region 13 is said upper outlet 15, said material The space inside the tank 16 is formed as the solid fuel zone 12, and the furnace 14 is formed at the bottom of the tank 16, and a plurality of vent holes 163 are distributed on the side wall of the tank 16.

Thus, a portion of the primary air entering from the primary damper 41 provides solid fuel within the feed bin 16 through the furnace 14 and another portion enters the inlet region 17 on the side of the hopper 16 and then passes through the side wall of the hopper 16 The upper vent hole 163 enters the hopper 16 to burn the solid fuel in the hopper 16 , and the volatile matter generated by the combustion of the solid fuel enters the gaseous region along with the airflow through the vent 163 on the other side wall of the hopper 16 13, then the airflow reaches the upper outlet 15 at the upper end of the gaseous region 13 and mixes with the secondary air provided by the inlet passage 2 to cause the combustible gas to be burned at a high temperature, thereby improving combustion efficiency.

[56] In this embodiment, the opposite ends 161, 162 of the side wall of the bin 16 may be directly connected to the side wall of the furnace 1, or may be connected to the connecting plate 164 as shown in FIG. The side wall of the furnace 1 is divided to divide the furnace 1 into two parts.

In the present embodiment, as shown in FIG. 7-9, the bin 16 in the embodiment may be a squirrel-cage bin, wherein a gap on the sidewall of the squirrel cage may be formed as the vent 163. . The shape of the bin 16 may be tapered as shown in FIG. 7 , or may be a cylindrical box as shown in FIG. 9 , or a square column box as shown in FIG. 8 , and of course other shapes. , are not listed one by one in the present invention.

In a specific embodiment of the present embodiment, a burner 61 may be disposed on the burner port 60. The structure and function of the burner 61 are the same as those of the first embodiment, and will not be described in detail herein.

As shown in FIG. 5 and FIG. 6 , in the specific embodiment of the present embodiment, an open flame device 3 may be further provided, and the structure and effect of the open flame device are basically the same as those in the first embodiment, and no longer be referred to herein. . The open flame is different from the embodiment 1 in that, in the present embodiment, the lower port 311 of the tubular passage 31 is connected to the side wall of the magazine 16 and faces the furnace 14 so as to be from the furnace 14 The incoming primary air can enter the tubular passage 31 through the tank 16, and the gaseous volatiles generated in the tank 16 also partially enter the tubular passage 31 to be mixed with the primary air. The tubular passage 31 extends obliquely upward from the lower port toward the gaseous region 13 on the other side of the tank 16 such that the upper port 32 is located within the gaseous region 13 so that the volatiles entering the gaseous region 13 from the tank 16 can be thereon. The port 32 is ignited outside and is burned at a high temperature to further improve combustion efficiency and reduce pollutant emissions.

[60] In this embodiment, since the air can be supplied from the plurality of azimuths to the solid fuel in the tank 16 through the vent holes 163 in the side wall of the furnace 14 and the tank 16, the wind speed of the primary wind can be reduced. Low temperature solid fuel Combustion, avoiding coking, and the multi-directional supply of wind also contributes to the full combustion of the solid fuel and improves the combustion efficiency.

As shown in FIG. 4 to FIG. 5, in the specific embodiment of the present embodiment, the open flame device 3 may also include a supplemental air duct 33, a supplemental air area 7 and a supplemental air door 71, and the basic structure and function thereof. It is also the same as Embodiment 1, and will not be described here. The air supply duct 33 of the present embodiment is different from the first embodiment in that, in the present embodiment, the upper port 331 of the air supply duct 33 faces the lower port 311 of the tubular passage 31, thereby filling the wind into the tubular shape. Within the passage 31, it is not necessary to project into the lower port 311 of the tubular passage 31 as in the first embodiment. Thus, a part of the volatile matter generated in the tank 16 enters the tubular passage 31 together with the airflow filled by the air supply duct 33, and is mixed in the tubular passage 31 to reach the upper port 312, thereby facilitating formation at the upper port 312. High temperature combustion zone.

[62] In the present embodiment, as shown in FIG. 10, the furnace 14 may be arched to increase the area of the furnace 14, and further reduce the wind speed to facilitate the squirrel cage 16 Stratified combustion of solid fuels. In the present embodiment, the grate 14 can also be tilted to increase the area of the grate 14, as shown.

[63] In the present embodiment, as shown in FIG. 5, a water spout 8 and a pyrometer 9 may be disposed under the furnace 14, and the specific structure and operation and effect thereof are the same as those in the first embodiment. No longer praise.

The above description of the several embodiments of the present invention is intended to be illustrative only and not to limit the scope of the invention.

Claims

Claim

A solid fuel combustion furnace includes a furnace, and a feed port for feeding the furnace is provided at an upper portion of the furnace, wherein a solid fuel zone and a solid fuel zone are formed in the furnace a communicating gas zone, a furnace is arranged at a lower end of the solid fuel zone, an upper outlet is formed at an upper end of the gas zone, and a ventilation channel is arranged outside the furnace, and an outlet of the airflow channel is located at an upper exit position a solid fuel burner according to claim 1, wherein a gas burner is provided with a burner, the burner comprising a high temperature regenerator and a distribution A plurality of through air holes on the high temperature heat storage body.

The solid fuel combustion furnace according to claim 2, wherein said high temperature heat storage body is a hollow structure having a lower end opening, and said lower end opening is connected to said gas burner port. The solid fuel combustion furnace according to claim 2, wherein the hollow high temperature heat storage body has a tapered shape, a vertebral shape or a dome shape.

A solid fuel combustion furnace according to claim 1, wherein said high temperature resistant heat storage body is made of a high temperature resistant metal material or a high temperature resistant ceramic material.

A solid fuel combustion furnace according to claim 1, wherein a ash collecting chamber is provided below the furnace, and a primary damper is provided at one side of the ash collecting chamber.

A solid fuel combustion furnace according to claim 1, wherein a casing is provided in the furnace casing, and the inlet passage is formed between the casing and the outer wall of the furnace, and the inlet portion is provided at the lower portion of the casing for air inlet. The secondary damper.

A solid fuel combustion furnace according to claim 1, wherein an open flame is provided in said furnace, said flame opener comprising a tubular passage, the lower opening of said tubular passage being rearward or connected to the furnace, The tubular passage extends from the lower port upward toward the gaseous region, and the upper port is located in the gaseous region.

A solid fuel combustion furnace according to claim 8, wherein said flame extinguisher further comprises a supplemental air duct, the upper port of said supplemental air duct facing or extending into a lower port of said tubular passage, said air supply duct The lower port is connected to a supplemental air passage, thereby passing through the supplemental air duct Fill the wind in the road.

A solid fuel combustion furnace according to claim 9, wherein there is a ash collecting chamber below the furnace, and a primary damper on one side of the ash collecting chamber, the supplementary air area being independent of the ash collecting chamber And has a separate air damper.

A solid fuel combustion furnace according to claim 8, wherein said upper port of said flame opener is disposed to face said burner port.

A solid fuel combustion furnace according to claim 8, wherein said tubular passage is provided with a vent hole on a pipe wall facing the feed port side.

A solid fuel combustion furnace according to claim 8, wherein said tubular passage constituting the open flame has a lower port area larger than an upper port.

The solid fuel combustion furnace according to claim 1 or 2 or 8, wherein a tank is connected below the feed port, and opposite ends of the side wall of the tank are respectively connected to the inner wall of the furnace Therefore, the furnace space outside the tank is divided into two parts, wherein a part of the furnace is connected with the lower part of the furnace to form an air inlet zone, and another part of the furnace space is closed to form a gas zone, and the upper end of the gas zone has the above-mentioned The upper outlet, the space in the tank is formed as the solid fuel zone, the furnace is formed at the bottom of the tank, and a plurality of ventilation holes are distributed on the side wall of the tank.

A solid fuel combustion furnace according to claim 14, wherein said tank is a ham cage.

A solid fuel combustion furnace according to claim 14, wherein said furnace is inclined, or said furnace is an arched furnace which is arched upward in the middle.

The solid fuel combustion furnace according to claim 1 or 2 or 8, wherein the feed port is directly connected to the furnace so that the solid fuel fed from the feed port directly falls to the bottom of the furnace, in the lower portion of the furnace It is deposited as a solid fuel zone, and a gas-filled zone is formed in the upper portion of the furnace above the solid fuel zone.

A solid fuel combustion furnace according to claim 17, wherein the furnace at the bottom of said solid fuel zone has a flow guiding slope at least at a position opposite to the feed port.

A solid fuel combustion furnace according to claim 1, wherein said feed port is provided Placed on top of the hearth.

[20] The solid fuel combustion furnace according to claim 1, wherein a water spout capable of spraying water toward the solid fuel on the furnace is provided below the furnace.

[21] The solid fuel combustion furnace according to claim 20, wherein a temperature measuring instrument capable of detecting the temperature of the solid fuel zone on the furnace is provided below the furnace.

[22] The solid fuel combustion furnace according to claim 21, wherein the thermometer is an infrared thermometer.