Combustor for heating fuel by using waste heat

Abstract

The utility model discloses a burner utilizing waste heat to heat fuel. The burner for heating the fuel by using the waste heat comprises a burner body; a heat insulation mechanism is arranged on the burner body; the heat insulation mechanism comprises a heat insulation plate installed on the burner body. According to the combustor for heating the fuel through the waste heat, the heat insulation mechanism comprising the heat insulation plate is arranged on the combustor body, heat radiation emitted to the combustor body is reflected through the reflection layer, the heat conduction speed is further reduced through the heat insulation layer, the temperature rising speed of the combustor body can be reduced, and the heat conduction efficiency is improved. The base plate is used for increasing the heat dissipation speed of the burner body, the temperature of the burner body can be effectively reduced, the first pipe disc, the second pipe disc, the third pipe disc and the circulating pump are arranged, the heat dissipation speed of the high-temperature position of the front end of the burner body can be increased, heat dissipation waste heat can be used for heating fuel, and the burning efficiency of the fuel can be improved.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a burner that utilizes waste heat to heat fuel. Background Technology

[0002] In aluminum melting furnaces and glass kilns, burners fueled by natural gas are commonly used to heat the raw materials. These burners are typically pistol-type burners, using natural gas as fuel and oxygen as an auxiliary gas. The heating of the raw materials is achieved through the combustion of the fuel.

[0003] When using existing gun-type burners, the raw materials inside the kiln need to be heated at close range. Due to the close proximity of the burner to the kiln, the entire burner, especially the front end of the burner, is close to the furnace and receives a lot of heat radiation reflected from the furnace and directly from the flame. This results in a high temperature at the front end of the burner, generally maintained at a high temperature above 100°C. This will undoubtedly accelerate the aging of the burner and is not conducive to the long-term use of the equipment.

[0004] Therefore, it is necessary to provide a burner that utilizes waste heat to heat fuel to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a burner that uses waste heat to heat fuel, which can reduce the cooling of the burner and use the waste heat from heat dissipation to preheat the fuel.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A burner that uses waste heat to heat fuel includes: a burner body; a heat insulation mechanism disposed on the burner body; the heat insulation mechanism includes a heat insulation plate installed on the burner body; the heat insulation plate includes a base plate, a heat insulation layer and a reflective layer arranged sequentially.

[0008] Preferably, the burner body is provided with a nozzle, a gun body, a natural gas connection pipe, and an oxygen connection pipe.

[0009] Preferably, a first tube coil is fixedly installed on one side of the base plate, a second tube coil is installed on the natural gas connection pipe, a third tube coil is installed on the oxygen connection pipe, and a circulation pump is fixedly installed on the gun body. The first tube coil, the second tube coil, the third tube coil, and the circulation pump are connected end to end in sequence.

[0010] Preferably, an annular cooling box is fixedly mounted on one side of the substrate, and the cooling box is connected to the circulating pump and the first tube coil.

[0011] Preferably, multiple heat sinks are fixedly mounted on one side of the substrate.

[0012] Preferably, multiple connecting bolts are installed on one side of the cooling box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) This utility model provides a heat insulation mechanism including a heat insulation plate on the burner body, uses a reflective layer to reflect the heat radiation directed towards the burner body, and uses a heat insulation layer to further reduce the heat conduction speed, which can help reduce the heating rate of the burner body. It also uses a substrate to increase the heat dissipation speed of the burner body, which can effectively reduce the temperature of the burner body.

[0015] (2) By setting up a first tube coil, a second tube coil, a third tube coil, and a circulating pump, this utility model can accelerate the heat dissipation speed at the high temperature front end of the burner body and can use the residual heat of heat dissipation to heat the fuel, which is beneficial to improving the combustion efficiency of the fuel.

[0016] (3) This utility model can improve the heat dissipation speed of the burner body by fixing and installing multiple heat dissipation fins on one side of the heat insulation plate;

[0017] (4) By fixing an annular coolant tank on one side of the heat insulation plate, this utility model can improve the stability of the heat insulation plate and increase the cooling speed of the gun body, which is beneficial to reducing the temperature of the gun body. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the burner that utilizes waste heat to heat fuel provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the burner body in a burner that uses waste heat to heat fuel.

[0020] Figure 3 for Figure 1 The diagram shows the installation of the cooling box in a burner that uses waste heat to heat fuel.

[0021] Figure 4 for Figure 1 The diagram shows a schematic representation of an embodiment of a heat insulation plate in a burner that utilizes waste heat to heat fuel.

[0022] Figure 5 for Figure 1 The diagram shows a schematic representation of an embodiment of a heat insulation plate in a burner that utilizes waste heat to heat fuel.

[0023] Figure 6 for Figure 1 The diagram shows a cross-sectional view of the heat insulation plate in a burner that uses waste heat to heat fuel.

[0024] The corresponding names of the attached figures are: 1-burner body, 2-heat insulation plate, 11-nozzle, 12-gun body, 13-natural gas connection pipe, 14-oxygen connection pipe, 15-circulation pump, 21-first tube coil, 22-cooling box, 23-heat sink, 24-reflective layer, 25-heat insulation layer, 26-base plate, 131-second tube coil, 141-third tube coil, 221-connecting pipe, 222-connecting bolt. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0026] Example 1:

[0027] like Figure 1-6As shown, the present invention provides a burner for heating fuel using waste heat, comprising: a burner body 1, the burner body 1 being provided with a nozzle 11, a gun body 12, a natural gas connecting pipe 13, and an oxygen connecting pipe 14. The nozzle 11 is located at the front end of the gun body 1. One end of the natural gas connecting pipe 13 extends into the gun body 12 and is connected to a nozzle installed in the nozzle 11. The oxygen connecting pipe 4 is in communication with the interior of the gun body 12. Natural gas enters the gun body 12 through the natural gas connecting pipe 13 and is ejected from the nozzle 11. Oxygen is introduced into the nozzle in the gun body 12 through the oxygen connecting pipe 14, is ejected from the nozzle, and mixes with the natural gas at the nozzle 11. An electronic igniter in the nozzle 11 ignites the mixed gas, causing it to burn, and the flame is directed into the furnace for use in the kiln. A heat insulation mechanism is provided on the burner body 1. The heat insulation mechanism includes a heat insulation plate 2 installed at the front end of the burner body 1. The shape, area, and thickness of the heat insulation plate 2 are not limited and can be designed according to actual needs. In this embodiment, a circle is used as an example. The heat insulation plate 2 is sleeved and installed on the burner body 1 near the nozzle 11. The heat insulation plate 2 includes a metal base plate 26, a heat insulation layer 25, and a reflective layer 24 arranged in sequence. The heat insulation layer 25 is fixedly disposed between the reflective layer 24 and the base plate 26. The reflective layer 24 is installed facing the furnace. Plate 26 is fixedly connected to the gun body 12 of the burner body 1. The reflective layer 24 is made of a material that can reflect heat radiation, such as polished aluminum, electrolytic silver, or gold foil. During use, the flame is directed into the furnace, causing the internal temperature of the furnace to rise. When heat radiation is directed towards the burner body 1, the reflective layer 24 reflects most of the heat radiation back into the furnace, thereby reducing the heat radiation received by the burner body 1 and helping to lower its temperature. At the same time, the reflection of heat radiation back into the furnace reduces the rate of heat loss inside the furnace, which helps to increase the furnace temperature and improve fuel utilization. The heat insulation layer 25 reduces the efficiency of heat conduction from the reflective layer 24 to the base plate 26, which helps to further reduce the heating rate of the burner body 1. Moreover, the base plate 26 has a larger surface area, which can improve the heat dissipation rate of the burner body 1. Through these measures, the heating rate of the burner body 1 can be effectively reduced, and with the increased heat dissipation rate, the temperature of the burner body 1 can be lowered.

[0028] By providing a heat insulation mechanism including a heat insulation plate 2 on the burner body 1, the heat radiation directed towards the burner body 1 is reflected by the reflective layer 24, and the heat conduction speed is further reduced by the heat insulation layer 25, which can help reduce the heating rate of the burner body 1. The heat dissipation speed of the burner body 1 is increased by the substrate 26, which can effectively reduce the temperature of the burner body 1.

[0029] Example 2:

[0030] like Figure 2As shown, a first tube coil 21 is fixedly installed on one side of the base plate 26 of the heat insulation plate 2, a second tube coil 131 is installed on the natural gas connection pipe 13, a third tube coil 141 is installed on the oxygen connection pipe 14, and a circulation pump 15 is fixedly installed on the gun body 12. The first tube coil 21, the second tube coil 131, the third tube coil 141, and the circulation pump 15 are connected end to end in sequence. During use, since the heat insulation plate 2 is close to the nozzle 11, the temperature at the nozzle 11 is the highest, and then decreases sequentially towards the rear. The substrate 26 is fixed to the gun body 12, so the temperature of the substrate 26 rises relatively quickly. The circulation pump 25 pumps the low-temperature coolant into the first tube coil 21, where it exchanges heat with the first tube coil 21, causing the temperature of the first tube coil 21 to decrease, which in turn lowers the temperature of the substrate 26. The decrease in the temperature of the substrate 26 causes the temperature of the gun body 12 to decrease. After the temperature of the low-temperature coolant rises, it sequentially enters the second tube coil 131 and the third tube coil 141, and finally flows back into the circulation pump 5, causing the temperature of the second tube coil 131 and the third tube coil 141 to rise, which in turn raises the temperature of the natural gas in the natural gas connection pipe 13 and the oxygen in the oxygen connection pipe 14. This preheats the fuel before it enters the gun body 12, increases the molecular activity of the fuel, and is beneficial to improving combustion efficiency. Furthermore, the first tube coil 21, the second tube coil 131, the third tube coil 141, and the connecting pipes between them are also constantly dissipating heat to the outside, which helps to further reduce the temperature of the front end of the burner body 1 (the front end of the nozzle 11 and the gun body 12), that is, to reduce the maximum temperature of the burner body 1.

[0031] By setting up the first tube coil 21, the second tube coil 131, the third tube coil 141, and the circulation pump 15, the heat dissipation rate at the high temperature at the front end of the burner body 1 can be accelerated, and the waste heat from the heat dissipation can be used to heat the fuel, which is beneficial to improving the fuel combustion efficiency.

[0032] Example 3:

[0033] like Figure 4 As shown, in this embodiment, multiple heat sinks 23 are fixedly installed on one side of the base plate 26 of the heat insulation plate 2. Specifically, the heat sinks 23 are fixedly connected to the base plate 26. The heat sinks 23 accelerate the heat dissipation speed of the heat insulation plate 2, thereby improving the heat dissipation speed of the burner body 1 and reducing its temperature.

[0034] By fixing multiple heat sinks 23 on one side of the heat insulation plate 2, the heat dissipation rate of the burner body 1 can be improved.

[0035] Example 4:

[0036] like Figure 3As shown, in this embodiment, an annular cooling box 22 is fixedly installed on one side of the base plate 26 of the heat insulation plate 2. The cooling box 22 is sleeved and fixed on the gun body 12. One end of the first tube coil 21 is connected to the cooling box 22. A connecting pipe 221 is installed on the upper part of the cooling box 22 and connected to the circulation pump 15. The inner side of the cooling box 22 is installed against the outer wall of the gun body 12. The coolant pumped in by the circulation pump 15 enters the cooling box 22. Since the contact area between the cooling box 22 and the gun body 12 is larger, the heat conduction speed is improved, and the stability of the heat insulation plate 2 is improved. This is beneficial to improving the cooling speed of the gun body 12. After the coolant in the cooling box 22 is heated, it enters the first tube coil 21.

[0037] By fixing an annular cooling box 22 to one side of the heat insulation plate 2, the stability of the heat insulation plate 2 can be improved, and the cooling speed of the gun body 12 can be increased, which is beneficial to reducing the temperature of the gun body 12.

[0038] Example 5:

[0039] like Figure 3 As shown, multiple connecting bolts 222 are installed on one side of the cooling box 22. During installation, the connecting bolts 222 pass through the flange on the gun body 12 and are connected and fixed to the flange, thereby fixing the cooling box 22 to the gun body 12.

[0040] Installing multiple connecting bolts 222 on one side of the cooling box 22 can help improve the stability of the cooling box 22 in use.

[0041] Working principle: During operation, the flame is directed into the furnace, raising the internal temperature. When heat radiation is directed towards the burner body 1, the reflective layer 24 reflects most of the heat radiation back into the furnace, thereby reducing the heat radiation received by the burner body 1 and helping to lower its temperature. Simultaneously, the reflection of heat radiation back into the furnace reduces the rate of heat loss, which helps to increase the furnace temperature and improve fuel utilization. The insulation layer 25 further reduces the efficiency of heat conduction from the reflective layer 24 to the substrate 26, further reducing the heating rate of the burner body 1. Furthermore, the substrate 26 has a larger surface area, increasing the heat dissipation rate of the burner body 1. These measures effectively reduce the heating rate of the burner body 1, and with the increased heat dissipation rate, the temperature of the burner body 1 can be effectively lowered.

Claims

1. A burner that utilizes waste heat to heat fuel, characterized in that, include: Burner body (1); A heat insulation mechanism is provided on the burner body (1); The heat insulation mechanism includes a heat insulation plate (2) installed on the burner body (1); The heat insulation board (2) includes a substrate (26), a heat insulation layer (25) and a reflective layer (24) arranged in sequence.

2. A burner for heating fuel using waste heat according to claim 1, characterized in that, The burner body (1) is provided with a nozzle (11), a gun body (12), a natural gas connection pipe (13), and an oxygen connection pipe (14).

3. A burner for heating fuel using waste heat according to claim 2, characterized in that, The first tube coil (21) is fixedly installed on one side of the substrate (26), the second tube coil (131) is installed on the natural gas connecting pipe (13), the third tube coil (141) is installed on the oxygen connecting pipe (14), and the circulation pump (15) is fixedly installed on the gun body (12). The first tube coil (21), the second tube coil (131), the third tube coil (141), and the circulation pump (15) are connected end to end in sequence.

4. A burner for heating fuel using waste heat according to claim 3, characterized in that, An annular cooling box (22) is fixedly installed on one side of the substrate (26), and the cooling box (22) is connected to the circulating pump (15) and the first tube coil (21).

5. A burner for heating fuel using waste heat according to claim 4, characterized in that, Multiple connecting bolts (222) are installed on one side of the cooling box (22).

6. A burner for heating fuel using waste heat according to claim 1, characterized in that, Multiple heat sinks (23) are fixedly mounted on one side of the substrate (26).

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