Regenerative combustion furnace apparatus

Abstract

The application discloses a heat accumulating combustion furnace device, which comprises a vertical cylindrical cylinder, a polymerization disc combustion cavity, a heat accumulating body assembly, a lower locking passage, an auxiliary combustion head, a gas mixing connecting assembly, an air outlet passage and a plurality of screws. The polymerization disc combustion cavity comprises an upper polymerization disc cover and a lower polymerization disc cover. The upper polymerization disc cover comprises a convex part and a flat locking part connected to the convex part. The convex part is circular. The gas mixing connecting assembly comprises a gas mixing receiving part, a right waste gas head and a left fuel gas head. The right waste gas head is provided with a shrinkage inclined passage. The left fuel gas head is provided with a bent passage. The end of the bent passage is located below the side of the shrinkage inclined passage. The specific proportion can improve the waste gas treatment rate. After the combustion gas is accelerated by heat accumulation, the gas is fully reacted along the long section of the vertical cylindrical cylinder, the treatment effect is improved, the mixing effect is improved, and the problems of low utilization rate and low treatment rate are solved under the condition that the combustible gas consumption is relatively small.

Description

Technical Field

[0001] This invention relates to the field of combustion furnaces, and more particularly to a regenerative combustion furnace device. Background Technology

[0002] Currently, regenerative thermal combustion technology, also known as high-temperature air combustion technology, is a combustion technology operating under high-temperature, low-oxygen air conditions. Regenerative thermal combustion fundamentally improves the energy utilization rate of heating furnaces, especially in the rational use of low-calorific-value fuels (such as blast furnace gas). This reduces pollutant emissions (blast furnace gas) and saves energy, making it an advanced technology that meets current resource and environmental requirements. Furthermore, the adoption of regenerative thermal combustion technology enhances furnace gas circulation, uniforms the furnace temperature field, and significantly improves heating quality. With increasingly stringent environmental protection requirements and standards, enterprises are paying unprecedented attention to VOCs. However, choosing a solution is not easy, and enterprises face significant pressure. While regenerative thermal combustion technology can address this issue, it is still in the research and development stage.

[0003] Patent document with application number "CN201810399634.7" discloses a regenerative thermal oxidation combustion furnace (RTO / RCO) for VOCs waste gas treatment, comprising: a combustion furnace, an air supply duct, a fan, an air inlet duct, an air outlet, a fume hood, a first accumulator, a first baffle, a second accumulator, a first filter layer, a second baffle, a second filter layer, a nozzle, and a gas pipe; a fume hood is provided on the top side of the combustion furnace and is connected to the combustion furnace by bolts; an air supply duct is provided on one side of the fume hood and one end of the air supply duct is connected to the fume hood by a flange; a fan is provided at the other end of the air supply duct and is connected to the air supply duct by a flange; an air inlet duct is provided on one side of the fan and is connected to the fan by a flange.

[0004] Patent document with application number "CN201920488229.2" discloses a regenerative waste gas combustion furnace, including a base, a combustion furnace body, a heat accumulator, and a gas burner. A blower is installed on one side of the base, an air inlet pipe is installed above the blower, and an air inlet valve is installed on the air inlet pipe. The heat accumulator is installed at the other end of the air inlet pipe, and the combustion furnace body is installed below the heat accumulator. A waste gas inlet pipe is installed on one side wall of the combustion furnace body, and a waste gas valve is installed on the waste gas inlet pipe. A distribution pipe is installed on one side inside the combustion furnace body. The beneficial effects are: by setting up a first heat exchanger and a second heat exchanger, the heat from the combustion of the flue gas can be fully utilized to gradually heat the water source in the cold water tank, storing it sequentially in the medium-temperature water tank and the high-temperature water tank for external use. This layered heating method can fully utilize the heat from the combustion of the flue gas, improving the efficiency of thermal energy utilization.

[0005] The aforementioned patent documents reveal the following defects in existing waste gas treatment combustion furnaces:

[0006] Although regenerative thermal oxidizers have begun to be used in the field of waste gas treatment, existing regenerative thermal oxidizers generally include a furnace body, combustion chamber, burner, regenerator, inlet pipe, exhaust pipe, and chimney. In operation, waste gas is introduced into the combustion chamber through the inlet pipe, ignited by the burner, and then discharged through the exhaust pipe into the chimney. However, it has been found that most existing regenerative thermal oxidizers discharge the waste gas directly through the chimney. This results in low waste gas treatment efficiency, with a significant amount of residual waste gas remaining in the treated gas, leading to poor treatment effects. Furthermore, if a high treatment efficiency is desired, the combustion time and the amount of combustible gas consumed must be substantial, resulting in low utilization and high costs. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, one of the objectives of this invention is to provide a regenerative combustion furnace that can solve the problems of poor treatment effect, low utilization rate and high consumption cost.

[0008] One of the objectives of this invention is achieved through the following technical solution:

[0009] A regenerative combustion furnace includes a vertical cylindrical cylinder, a polymerization disc combustion chamber, a regenerator assembly, a lower locking channel, an auxiliary combustion head, a gas mixing connection assembly, a gas outlet channel, and multiple screws. The lower part of the vertical cylindrical cylinder is connected to the polymerization disc combustion chamber. The polymerization disc combustion chamber includes an upper polymerization cover and a lower polymerization cover. The upper and lower polymerization covers have the same structure and are locked together by a ring of screws. The upper polymerization cover includes a protrusion and a flat locking part connected to the protrusion. The protrusion is circular and extends obliquely downwards around its perimeter. The top circular diameter of the protrusion is D1, and the bottom circular diameter is D2. The ratio of D1 to D2 is between 5.5 and 7.5. The thickness of the disc combustion chamber is D3, the height of the vertical cylindrical tube is H, and H / D3 is between 3 and 4.5. The auxiliary combustion head is installed on the top of the vertical cylindrical tube and located in the middle. The exhaust channel is located on the side of the auxiliary combustion head. The heat storage assembly is located in the combustion chamber of the polymerization disc. The lower locking channel is connected to the lower polymerization cover. The lower locking channel is connected to the gas mixing connection assembly. The gas mixing connection assembly includes a gas mixing receiving part for connecting with the lower locking channel, a right exhaust gas head, and a left gas combustion head. The right exhaust gas head is provided with a constricting inclined channel, and the left gas combustion head is provided with a curved channel. The end of the curved channel is located below the side of the constricting inclined channel.

[0010] Furthermore, the tightening inclined channel includes a large opening and a small opening. The large opening is located on the outside and connects to the upwardly inclined small opening. The tightening inclined channel is in a tightened state, and the small opening is located on the upper side of the tightening inclined channel.

[0011] Furthermore, the gas-mixing receiving part is provided with a vertical upper edge channel, which is connected to the lower locking channel. The lower locking channel is provided with a lower annular locking end, which is locked to the gas-mixing receiving part by a screw.

[0012] Furthermore, the interior of the left gas head is provided with a lower protrusion, which forms a lower edge tightening section and an upper edge extension section at the curved channel. The lower edge tightening section is connected to the tightening inclined channel and the vertical upper edge channel through the upwardly curved upper edge extension section.

[0013] Furthermore, the lower edge tightening section includes a first large opening and a first small opening, wherein the diameter of the first large opening is twice that of the first small opening.

[0014] Furthermore, the upper extension segment includes a second small opening and a second large opening, wherein the diameter of the second large opening is 1.2 times that of the second small opening.

[0015] Furthermore, the regenerative combustion furnace equipment also includes three gas mixing and polymerization fans, which are respectively located at the right exhaust gas head, the left gas combustion head, and the vertical upper channel.

[0016] Furthermore, the gas mixing and polymerization fan, located at the bottom of the vertical upper edge channel, is positioned at the outlet of the upper edge extension section.

[0017] Furthermore, the width of the flat locking part is L, and L is greater than 3.5cm.

[0018] Furthermore, the heat storage body assembly includes an upper heat storage part and a lower heat storage part connected to the upper heat storage part. The thickness of the upper heat storage part is twice that of the lower heat storage part. A first plane is provided between the upper heat storage part and the lower heat storage part. The upper and lower polymer covers form a second plane. The first plane and the second plane coincide.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The exhaust channel is located on the side of the auxiliary combustion head; the heat storage assembly is located in the combustion chamber of the polymerization disc; the lower locking channel is connected to the lower polymerization cover; the lower locking channel is connected to the gas mixing connection assembly; the gas mixing connection assembly includes a gas mixing receiving part for connecting to the lower locking channel, a right exhaust gas head, and a left gas combustion head; the right exhaust gas head is provided with a constricting inclined channel; the left gas combustion head is provided with a curved channel; the end of the curved channel is located below the side of the constricting inclined channel. The ratio of the bottom circular diameter of the protrusion, the thickness of the combustion chamber of the polymerization disc (D3), and the height of the vertical cylindrical tube (H) can improve the treatment rate of exhaust gas. Simultaneously, the gas after combustion undergoes accelerated reaction through heat storage and then reacts fully along the long section of the vertical cylindrical tube, further enhancing the treatment effect. However, this ratio requires a high level of gas mixing. To address this issue, the gas from the right exhaust gas head is fully mixed by the injection of the left combustion head, thereby improving the mixing effect. This allows for sufficient treatment even with relatively low combustible gas consumption, solving the problems of low utilization and low treatment rate.

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a preferred embodiment of the regenerative combustion furnace equipment of the present invention;

[0023] Figure 2 for Figure 1 A partial sectional view of the regenerative combustion furnace shown.

[0024] Figure 3 for Figure 1 A perspective view of the regenerative combustion furnace shown.

[0025] Figure 4 for Figure 1 A top view of the regenerative combustion furnace shown.

[0026] Figure 5 for Figure 1 A partial sectional view of the regenerative combustion furnace shown.

[0027] Figure 6 for Figure 1 Another perspective view of the regenerative combustion furnace equipment shown;

[0028] Figure 7 for Figure 1Another cross-sectional view of the regenerative combustion furnace shown.

[0029] In the diagram: 10. Vertical cylindrical tube; 20. Combustion chamber of the polymerization disc; 21. Upper polymerization cover; 211. Protrusion; 212. Flat locking part; 22. Lower polymerization cover; 30. Heat storage assembly; 40. Lower locking channel; 41. Lower annular locking end; 50. Auxiliary combustion head; 60. Mixing connection assembly; 61. Mixing receiving part; 611. Vertical upper edge channel; 62. Right exhaust gas head; 621. Tightening inclined channel; 63. Left gas head; 631. Lower protrusion; 632. Bent channel; 6321. Lower edge tightening section; 6322. Upper edge expansion section; 70. Gas outlet channel; 80. Mixing polymerization fan; 90. Screw. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is described as "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Please see Figure 1-7A regenerative combustion furnace includes a vertical cylindrical cylinder 10, a polymerization disc combustion chamber 20, a regenerator assembly 30, a lower locking channel 40, an auxiliary combustion head 50, a gas mixing connection assembly 60, a gas outlet channel 70, and multiple screws 90. The lower part of the vertical cylindrical cylinder 10 is connected to the polymerization disc combustion chamber 20. The polymerization disc combustion chamber 20 includes an upper polymerization cover 21 and a lower polymerization cover 22. The upper polymerization cover 21 and the lower polymerization cover 22 have the same structure and are locked together by a ring of screws 90. The upper polymerization cover 21 includes a protrusion 211 and a flat locking part 212 connected to the protrusion 211. The protrusion 211 is circular and extends obliquely downwards on all four sides. The top circular diameter of the protrusion 211 is D1, and the bottom circular diameter of the protrusion 211 is D2. The ratio of D1 to D2 is between 5.5 and 7.5. The thickness of the polymerization disc combustion chamber 20 is D3, the height of the vertical cylindrical tube 10 is H, and H / D3 is between 3 and 4.5. The auxiliary combustion head 50 is installed on the top of the vertical cylindrical tube 10 and located in the middle. The gas outlet channel 70 is located on the side of the auxiliary combustion head 50. The heat storage body assembly 30 is located inside the polymerization disc combustion chamber 20. The lower locking channel 40 is connected to the lower polymerization cover 22. The lower locking channel 40 is connected to the gas mixing connection assembly 60. The gas mixing connection assembly 60 includes a gas mixing receiving part 61 for connecting with the lower locking channel 40, a right exhaust gas head 62, and a left gas combustion head 63. The right exhaust gas head 62 is provided with a constricting inclined channel 621, and the left gas combustion head 63 is provided with a curved channel 632. The end of the curved channel 632 is located below the side of the constricting inclined channel 621. The ratio of the bottom circular diameter of the protrusion 211, the thickness of the polymerization disc combustion chamber 20 (D3), and the height of the vertical cylindrical tube 10 (H) can improve the treatment rate of exhaust gas. Simultaneously, the gas after combustion undergoes accelerated reaction through heat storage and then reacts fully along the long section of the vertical cylindrical tube 10, further improving the treatment effect. However, this ratio requires high precision in gas mixing. To address this issue, the left combustion head 63 is used to fully mix the exhaust gas from the right exhaust head 62, thereby improving the mixing effect. This allows for thorough treatment even with relatively low combustible gas consumption, solving the problems of low utilization and low treatment rate.

[0034] Preferably, the constricting inclined channel 621 includes a large opening and a small opening. The large opening is located on the outer side and connects to the upwardly inclined small opening. The constricting inclined channel 621 is constricted, and the small opening is located on the upper side of the constricting inclined channel 621. The purpose of setting the constricting inclined channel 621 is to address the issue of high gas mixing requirements in the aforementioned proportional setting. By using an upward inclination combined with constriction, the gas flow rate can be increased to facilitate collision with the combustion gas.

[0035] Preferably, the gas-mixing receiving part 61 is provided with a vertical upper edge channel 611, which is connected to the lower locking channel 40. The lower locking channel 40 is provided with a lower annular locking end 41, which is locked to the gas-mixing receiving part 61 by a screw 90. The left gas head 63 is provided with a lower protrusion 631 inside. The lower protrusion 631 forms a lower edge tightening section 6321 and an upper edge extending section 6322 at the curved channel 632. The lower edge tightening section 6321 is connected to the tightening inclined channel 621 and the vertical upper edge channel 611 through the upwardly curved upper edge extending section 6322. The purpose of setting the lower edge tightening section 6321, the upper edge extension section 6322, and the lower protrusion 631 is that the lower protrusion 631 can accelerate the gas flow rate along the lower edge tightening section 6321 to impact downwards and then rapidly accelerate and bounce up along the upper edge extension section 6322. On the one hand, it can transform the lateral impact force into a vertical impact force to accelerate gas fusion, and on the other hand, it can improve the stability of the pipeline. For this kind of hybrid structure, if the form of direct lateral impact is used, long-term operation will definitely cause shaking problems or even loose screws. The form of downward protrusion and then rebound can specifically solve the special problems of the special structure of this application.

[0036] Preferably, the lower edge constriction section 6321 includes a first large opening and a first small opening, the diameter of the first large opening being twice that of the first small opening. The upper edge extension section 6322 includes a second small opening and a second large opening, the diameter of the second large opening being 1.2 times that of the second small opening. The regenerative combustion furnace equipment also includes three gas mixing and polymerization fans 80, which are respectively disposed at the right exhaust gas head 62, the left gas combustion head 63, and the vertical upper edge channel 611. The purpose of setting up the gas mixing and polymerization fan 80 is to further improve the utilization rate and maximize it. The two gas mixing and polymerization fans 80 set at the right exhaust gas head 62 and the left gas head 63 are to provide swirling gas and accelerate its speed. The gas mixing and polymerization fan 80 set at the vertical upper edge channel 611 makes the mixed gas spiral upward for complete combustion. This is an optimized setting for the proportion and structure of this application. The position design of the three gas mixing and polymerization fans 80 is also very particular. It should be noted that the gas mixing and polymerization fan 80 set at the right exhaust gas head 62 is located inside the right exhaust gas head 62 channel and at the rightmost end. The gas mixing and polymerization fan 80 set at the left gas head 63 is located outside the left gas head 63 channel and at the end face close to the left gas head 63. This can fully ensure the movement trajectory and mixing effect of the gas and exhaust gas. In conjunction with the gas mixing and polymerization fan 80 set at the bottom of the vertical upper edge channel 611 and on the side of the right exhaust gas head 62, it specifically solves the specific technical problems in this application.

[0037] Preferably, the gas-mixing and converging fan 80, located at the bottom of the vertical upper edge channel 611, is positioned at the outlet of the upper edge extension section 6322. The width of the flat locking part 212 is L, which is greater than 3.5 cm. The heat storage assembly 30 includes an upper heat storage part and a lower heat storage part connected to the upper heat storage part. The thickness of the upper heat storage part is twice that of the lower heat storage part. A first plane is provided between the upper and lower heat storage parts, and the upper converging cover 21 and the lower converging cover 22 form a second plane. The first plane and the second plane coincide. It should be noted that the purpose of the first plane and the second plane coinciding is to ensure that the "upper heat storage part and lower heat storage part" are matched with the specific "upper converging cover 21, lower converging cover 22, and vertical cylindrical cylinder 10" of this application and in a specific proportion. Specifically, the thickness of the upper heat storage part is twice that of the lower heat storage part, which further improves the heat storage effect. The structure is novel, the design is ingenious, the applicability is strong, and it is easy to promote. It should be noted that, considering the high temperature requirements, the materials used in this application are all specifically designed to withstand high temperatures. These materials are quite common in the existing technology, so they will not be described in detail here.

[0038] It should be noted that, in order to achieve the best results, after multiple research and development experiments, the following proportions were set: the top circular diameter of the protrusion 211 is D1, the bottom circular diameter of the protrusion 211 is D2, D1 / D2 = 6.5, the thickness of the polymerization disc combustion chamber 20 is D3, and the height of the vertical cylindrical tube 10 is H, H / D3 = 3.5.

[0039] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A regenerative combustion furnace device, comprising a vertical cylindrical tube, a polymerization disc combustion chamber, a regenerator assembly, a lower locking channel, an auxiliary combustion head, a gas mixing connection assembly, a gas outlet channel, and multiple screws, characterized in that: The lower part of the vertical cylindrical tube is connected to the polymerization disc combustion chamber. The polymerization disc combustion chamber includes an upper polymerization cover and a lower polymerization cover. The upper and lower polymerization covers have the same structure and are locked together by a ring of screws. The upper polymerization cover includes a protrusion and a flat locking part connected to the protrusion. The protrusion is circular and extends downwards and downwards around its perimeter. The top circular diameter of the protrusion is D1, and the bottom circular diameter of the protrusion is D2. The ratio of D1 to D2 is between 5.5 and 7.

5. The thickness of the polymerization disc combustion chamber is D3. The height of the vertical cylindrical tube is H. The ratio of H to D3 is between 3 and 4.

5. The auxiliary combustion head is installed on the top of the vertical cylindrical tube and located in the middle. The exhaust channel is located on the side of the auxiliary combustion head. The heat storage assembly is disposed in the combustion chamber of the polymerization disc. The lower locking channel is connected to the lower polymerization cover. The lower locking channel is connected to the gas mixing connection assembly. The gas mixing connection assembly includes a gas mixing receiving part for connecting to the lower locking channel, a right exhaust gas head, and a left gas combustion head. The right exhaust gas head is provided with a constricting inclined channel, and the left gas combustion head is provided with a curved channel. The end of the curved channel is located below the side of the constricting inclined channel.

2. The regenerative combustion furnace equipment as described in claim 1, characterized in that: The tightening inclined channel includes a large opening and a small opening. The large opening is located on the outside and connects to the upwardly inclined small opening. The tightening inclined channel is in a tightened state, and the small opening is located on the upper side of the tightening inclined channel.

3. The regenerative combustion furnace equipment as described in claim 2, characterized in that: The gas-mixing receiving part is provided with a vertical upper edge channel, which is connected to the lower locking channel. The lower locking channel is provided with a lower annular locking end, which is locked to the gas-mixing receiving part by a screw.

4. The regenerative combustion furnace equipment as described in claim 3, characterized in that: The left gas head has a lower protrusion inside, which forms a lower edge tightening section and an upper edge extension section at the curved channel. The lower edge tightening section is connected to the tightening inclined channel and the vertical upper edge channel through the upwardly curved upper edge extension section.

5. The regenerative combustion furnace equipment as described in claim 4, characterized in that: The lower edge tightening section includes a first large opening and a first small opening, wherein the diameter of the first large opening is twice that of the first small opening.

6. The regenerative combustion furnace equipment as described in claim 4, characterized in that: The upper extension section includes a second small opening and a second large opening, wherein the diameter of the second large opening is 1.2 times that of the second small opening.

7. The regenerative combustion furnace equipment as described in claim 1, characterized in that: The regenerative combustion furnace equipment also includes three gas mixing and polymerization fans, which are respectively located at the right exhaust gas head, the left gas combustion head, and the vertical upper channel.

8. The regenerative combustion furnace equipment as described in claim 7, characterized in that: The gas mixing and polymerization fan, located at the bottom of the vertical upper channel, is positioned at the outlet of the upper extension section.

9. The regenerative combustion furnace equipment as described in claim 1, characterized in that: The width of the flat locking part is L, and L is greater than 3.5cm.

10. The regenerative combustion furnace equipment as described in claim 1, characterized in that: The heat storage assembly includes an upper heat storage section and a lower heat storage section connected to the upper heat storage section. The thickness of the upper heat storage section is twice that of the lower heat storage section. A first plane is provided between the upper heat storage section and the lower heat storage section. The upper and lower aggregate covers form a second plane. The first plane and the second plane coincide.

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