Integrated heating equipment for flue gas denitration

Abstract

The integrated heating equipment comprises a combustion mechanism and a valve group platform, the combustion mechanism comprises a combustion furnace, a combustor is arranged in the combustion furnace, the combustor comprises a shell, the interior of the shell is fixedly connected with a first gas equalizing plate, a first gas inlet pipe is installed on the shell, a fuel pipe is installed in the shell, and a second gas inlet pipe is installed on the fuel pipe. The fuel pipe is located below the first gas uniformizing plate, a second gas uniformizing plate matched with the fuel pipe is installed at the lower end of the shell, and a plurality of fuel spraying holes matched with the shell are formed in the fuel pipe. Compared with the prior art, the integrated heating equipment for flue gas denitration can solve the problem that the occupied space of the heating equipment is large, due to the fact that the combustor is arranged in the combustion furnace, the situation that flames generated by the combustor combust the inner wall of the combustion furnace can be reduced, the service life of the combustion furnace is prolonged, and the integrated heating equipment for flue gas denitration is suitable for popularization and application. The combustion mechanism and the valve group platform are arranged in a split mode and are convenient to install.

Description

Technical Field

[0001] This utility model belongs to the technical field of heating equipment, specifically relating to an integrated heating device for flue gas denitrification. Background Technology

[0002] With increasingly stringent environmental standards, the demand for process exhaust gas treatment in chemical, steel, and metallurgical enterprises is growing. To address this demand, various denitrification systems, especially denitrification furnaces, have emerged on the market to treat waste gas containing nitrogen oxides. However, denitrification processes have strict requirements on flue gas temperature; a certain temperature must be reached to ensure the catalyst operates at its optimal state and achieve efficient removal of nitrogen oxides. Since some upstream flue gas may not meet these temperature requirements, additional heating devices are needed to raise the temperature to meet the inlet conditions of the denitrification equipment.

[0003] While mainstream heating equipment on the market can meet some basic heat energy needs, it suffers from numerous problems due to improper configuration or unreasonable structure. Firstly, traditional heating equipment occupies a large space, increasing equipment costs and potentially causing uneven heating of flue gas, thus affecting denitrification efficiency. Furthermore, operators must move between complex and fixed equipment layouts, easily facing work pressure and potential safety threats due to untimely operation.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this utility model is to provide an integrated heating device for flue gas denitrification, which can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] An integrated heating device for flue gas denitrification includes a combustion mechanism and a valve platform. The combustion mechanism includes a combustion furnace, inside which a burner is installed. The burner includes a housing, inside which a first gas equalization plate is fixedly connected. A first air inlet pipe is installed on the housing, and a fuel pipe is installed inside the housing, located below the first gas equalization plate. A second gas equalization plate matching the fuel pipe is installed at the lower end of the housing. The fuel pipe has multiple fuel injection holes matching the housing. The valve platform includes a base, on which a side plate is fixedly connected. A feeding mechanism matching the burner is installed on the side plate.

[0008] In one or more embodiments of this utility model, an ignition assembly and a second gas equalization plate are installed on the combustion furnace.

[0009] In one or more embodiments of this utility model, the feeding mechanism includes a feeding pipe, and a plurality of connecting rods matching the feeding pipe are fixedly connected to the side plate. A first mounting hole is provided on the connecting rod, and a U-shaped connector matching the first mounting hole is installed on the connecting rod.

[0010] In one or more embodiments of this utility model, a second flow meter is provided at one end of the feed pipe, and a first flow meter is provided at the end of the feed pipe away from the second flow meter.

[0011] In one or more embodiments of this utility model, a first manual shut-off valve is installed on the feed pipe, and a plurality of pneumatic regulating valves are installed at the end of the feed pipe away from the first manual shut-off valve.

[0012] In one or more embodiments of this utility model, an auxiliary feed pipe is fixedly connected to the feed pipe, and a second manual shut-off valve is fixedly connected to the auxiliary feed pipe.

[0013] In one or more embodiments of this utility model, a first branch pipe is fixedly connected to the feed pipe, and a first valve is fixedly connected to the first branch pipe.

[0014] In one or more embodiments of this utility model, a second branch pipe is fixedly connected to the feed pipe, and a third valve is fixedly connected to the second branch pipe.

[0015] In one or more embodiments of this utility model, a control cabinet is installed on the side plate, and an adjustment mechanism matching the control cabinet is provided on the side plate.

[0016] In one or more embodiments of this utility model, a through hole is provided on the side plate, the adjustment mechanism includes a first waist hole provided on the side plate that matches the through hole, a connecting plate that matches the first waist hole is slidably connected to the side plate, and a second waist hole is provided on the connecting plate.

[0017] Compared with the prior art, the integrated heating equipment for flue gas denitrification of this utility model can reduce the problem of large space occupation of heating equipment. Since the burner is set inside the combustion furnace, it can also reduce the situation of the flame generated by the burner burning the inner wall of the combustion furnace, which is conducive to extending the service life of the combustion furnace. The combustion mechanism and valve group platform are set separately, which is easy to install. The assembly does not require complicated assembly, and the structure is compact. Operators do not need to move frequently between layouts, reducing the safety risks caused by untimely operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an integrated heating device for flue gas denitrification in one embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the combustion tank in one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the burner structure in one embodiment of the present invention;

[0022] Figure 4 This is a cross-sectional view of the burner in one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the valve assembly platform in one embodiment of the present invention. Figure 1 ;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure at point A in the middle;

[0025] Figure 7 This is a schematic diagram of the valve assembly platform in one embodiment of the present invention. Figure 2 ;

[0026] Figure 8 This is a schematic diagram of the connecting plate in one embodiment of the present invention.

[0027] Explanation of key figure labels:

[0028] 1. Combustion mechanism; 2. Combustion furnace; 201. Inlet end; 202. Outlet end; 3. Flame detector; 4. Burner; 5. Housing; 6. First air inlet pipe; 7. Fuel pipe; 701. Fuel injection hole; 8. First gas distribution plate; 9. Second gas distribution plate; 10. Valve assembly platform; 11. Base; 12. Side plate; 1201. Through hole; 1202. First waist hole; 13. Connecting rod; 1301. First mounting hole; 14. U-shaped connector; 15. Feed pipe ; 16. First manual shut-off valve; 17. Auxiliary feed pipe; 18. Second manual shut-off valve; 19. Third manual shut-off valve; 20. Pneumatic regulating valve; 21. First flow meter; 22. Second flow meter; 23. First branch pipe; 24. First valve; 25. Second branch pipe; 26. Third valve; 27. Control cabinet; 28. Connecting plate; 2801. Second waist hole; 29. ​​Limiting component; 2901. Second mounting hole; 30. Bolt; 31. Ignition assembly. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0030] like Figures 1-2 As shown in one embodiment of this utility model, an integrated heating device for flue gas denitrification is used to heat flue gas so that the heated flue gas can be used for desulfurization and denitrification in other equipment. This device includes a combustion mechanism 1 and a valve platform 10, which are separate units connected by pipes. This design allows for quick and individual disassembly and replacement if either the combustion mechanism 1 or the valve platform 10 is damaged.

[0031] like Figures 1-2 As shown, the combustion mechanism 1 includes a combustion furnace 2, which has an inlet end 201 and an outlet end 202. Exhaust gas enters from the inlet end 201 towards the outlet end 202. Inside the combustion furnace 2 is a burner 4, which can spray fire and fuel to achieve combustion of the exhaust gas inside the combustion furnace 2.

[0032] like Figures 1-4As shown, the burner 4 includes a housing 5, with a first gas equalization plate 8 fixedly connected inside the housing 5. A first air inlet pipe 6 is installed on the housing 5, and a fuel pipe 7 is installed inside the housing 5, located below the first gas equalization plate 8. A second gas equalization plate 9 matching the fuel pipe 7 is installed at the lower end of the housing 5. The fuel pipe 7 has multiple fuel injection holes 701 matching the housing 5. Fuel enters from the fuel pipe 7 and is ejected from the fuel injection holes 701. The fuel injection holes 701 are linear, therefore, the ejected fuel is also linear. After the ignition assembly 31 ignites in the combustion furnace 2, the fuel burns, resulting in a linear combustion flame. The linear flame has a large area and is dispersed, resulting in a large contact area with the gas, which is more effective in heating the gas.

[0033] Among them, such as Figures 2-4 As shown, air enters from the first air inlet pipe 6, passes through the first air distribution plate 8, is dispersed by the first air distribution plate 8, and enters between the second air distribution plate 9 and the shell 5. The air then passes through the second air distribution plate 9 again, and is dispersed again. The air entering the combustion furnace 2 is relatively dispersed, and the flame can fully contact the air, which is beneficial to the combustion of the flame.

[0034] Preferably, the combustion furnace 2 is equipped with insulation cotton, which largely prevents the surface of the heating furnace from getting too hot.

[0035] like Figures 1-4 As shown, an ignition assembly 31 and a second gas equalization plate 9 are installed on the combustion furnace 2. The flame situation inside the combustion furnace 2 can be observed through the second gas equalization plate 9, which is existing technology and will not be described in detail here. The ignition assembly 31 can supplement combustion from the side of the combustion furnace 2 to increase the range of flame combustion.

[0036] like Figures 1 to 7 As shown, the valve platform 10 includes a base 11, on which a side plate 12 is fixedly connected. The base 11 and the side plate 12 are integrally formed. A feeding mechanism matching the burner 4 is installed on the side plate 12, and the base 11 and the side plate 12 can support the feeding mechanism. The feeding mechanism includes a feed pipe 15, one end of which is connected to the fuel pipe 7 via a flange. Combustion enters the fuel pipe 7 through the feed pipe 15.

[0037] like Figures 5-7As shown, multiple connecting rods 13, matching the feed pipe 15, are fixedly connected to the side plate 12. Each connecting rod 13 has a first mounting hole 1301, and a U-shaped connector 14 matching the first mounting hole 1301 is installed on the connecting rod 13. The feed pipe 15 is fixed to the side plate 12 via the connecting rods 13 and the U-shaped connector 14. The U-shaped connector 14 is typically a clamp, allowing the side plate 12 and feed pipe 15 to be separated when the feed pipe 15 is completely damaged, facilitating the reuse of the base 11 and side plate 12.

[0038] like Figures 5-7 As shown, a second flow meter 22 is located at one end of the feed pipe 15, and a first flow meter 21 is located at the end of the feed pipe 15 furthest from the second flow meter 22. The second flow meter 22 is mainly used to monitor the real-time pressure of the entire system, while the first flow meter 21 is used for valve leak detection. Simply put, if there is a significant fluctuation between the data monitored by the second flow meter 22 and the data monitored by the first flow meter 21, it can be determined that a leak has occurred in a valve or other part of the pipeline between the second flow meter 22 and the first flow meter 21, requiring maintenance.

[0039] like Figures 5-7 As shown, a first manual shut-off valve 16 is installed on the feed pipe 15, and a number of pneumatic regulating valves 20 are installed at the end of the feed pipe 15 away from the first manual shut-off valve 16. The flow rate of fuel in the feed pipe 15 is adjusted by the number of pneumatic regulating valves 20.

[0040] like Figures 5-7 As shown, an auxiliary feed pipe 17 is fixedly connected to the feed pipe 15, and a second manual shut-off valve 18 is fixedly connected to the auxiliary feed pipe 17. The auxiliary feed pipe 17 is generally used to connect another fuel, and the mixing of the two fuels improves combustion efficiency. The second manual shut-off valve 18 is used to control the passage of the auxiliary feed pipe 17. A third manual shut-off valve 19 is installed on the feed pipe 15, and the third manual shut-off valve 19 can control the opening and closing of both the feed pipe 15 and the auxiliary feed pipe 17.

[0041] like Figures 5-7 As shown, a first branch pipe 23 is fixedly connected to the feed pipe 15, and a first valve 24 is fixedly connected to the first branch pipe 23. A second branch pipe 25 is fixedly connected to the feed pipe 15, and a third valve 26 is fixedly connected to the second branch pipe 25. The first branch pipe 23 and the second branch pipe 25 are respectively connected to the ignition assembly 31.

[0042] like Figures 5-8As shown, a control cabinet 27 is installed on the side panel 12 for local control of valve ignition. Leakage testing of the valve is performed before ignition, and ignition is initiated after the leak test is completed. The side panel 12 is equipped with an adjustment mechanism that matches the control cabinet 27. This adjustment mechanism can accommodate control cabinets 27 of different sizes. That is, if the control cabinet 27 is damaged and needs to be replaced with a control cabinet of a different size, the adjustment mechanism can accommodate it, allowing the side panel 12 to accommodate control cabinets 27 of different sizes.

[0043] like Figures 5-8 As shown, a through hole 1201 is provided on the side plate 12. The adjustment mechanism includes a first waist hole 1202 on the side plate 12 that matches the through hole 1201. A connecting plate 28 that matches the first waist hole 1202 is slidably connected to the side plate 12. A second waist hole 2801 is provided on the connecting plate 28. A limiting member 29 that matches the first waist hole 1202 is fixedly connected to the connecting plate 28. The limiting member 29 is T-shaped, allowing the connecting plate 28 to slide along the first waist hole 1202. A second mounting hole 2901 is provided on the limiting member 29. A bolt 30 that matches the second mounting hole 2901 is threaded onto the limiting member 29. The second mounting hole 2901 penetrates the connecting plate 28. When the bolt 30 is tightened, it can press against the inside of the through hole 1201, increasing the friction between the connecting plate 28 and the side plate 12, thereby fixing the connecting plate 28. Then, the control cabinet 27 is installed through the second waist hole 2801, bolts, etc.

[0044] This utility model features a highly integrated device. The burner 4 is placed inside the combustion furnace 2, unlike traditional external heating burners. Traditional external burners have wider flames that easily erode the inner wall of the flue gas passage. This utility model adopts a linear combustion principle, with the flame burning in a straight line within a limited space, effectively controlling the flame width and extending the service life of the combustion furnace 2. Simultaneously, the combustion-supporting air and gas valve assembly required for combustion are integrated and arranged on one side of the furnace body, saving a significant amount of floor space. All valves and instruments can be operated locally, eliminating the need for cumbersome remote operation. Operation is unified on the valve assembly platform 10, greatly reducing adjustment and installation time. Upon arrival, the entire device only requires bolt connection to the flue, eliminating the need for a large area of ​​land and solving the owner's space constraints. The program control cabinet is installed on top of the valve assembly and simultaneously on the same side plate 12 as all valves, significantly reducing the operator's procedures and time. By setting the program in the control cabinet, the gas regulating valve is automatically opened, closed, and adjusted according to the real-time temperature of the thermocouple at the inlet of the denitrification equipment. This enables quick, easy, and automated adjustment of the flame size to control the flue gas temperature. This simplifies operation and greatly reduces the time required to adjust the operating conditions due to changes in operating conditions. It saves time and costs, and minimizes the safety hazards and accidents caused by operator panic and carelessness when adjusting operating conditions in emergencies.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated heating device for flue gas denitrification, characterized in that, Including the combustion mechanism and valve assembly platform; The combustion mechanism includes a combustion furnace, and a burner is installed inside the combustion furnace; The burner includes a housing, a first gas equalization plate is fixedly connected inside the housing, a first air inlet pipe is installed on the housing, a fuel pipe is installed inside the housing, the fuel pipe is located below the first gas equalization plate, a second gas equalization plate matching the fuel pipe is installed at the lower end of the housing, and the fuel pipe has multiple fuel injection holes matching the housing. The valve platform includes a base, on which a side plate is fixedly connected, and on which a feeding mechanism matching the burner is installed.

2. The integrated heating device for flue gas denitrification according to claim 1, characterized in that, The combustion furnace is equipped with an ignition assembly and a second gas equalization plate.

3. The integrated heating device for flue gas denitrification according to claim 1, characterized in that, The feeding mechanism includes a feeding pipe, and a plurality of connecting rods that match the feeding pipe are fixedly connected to the side plate. A first mounting hole is provided on the connecting rod, and a U-shaped connector that matches the first mounting hole is installed on the connecting rod.

4. The integrated heating device for flue gas denitrification according to claim 3, characterized in that, A second flow meter is provided at one end of the feed pipe, and a first flow meter is provided at the end of the feed pipe away from the second flow meter.

5. An integrated heating device for flue gas denitrification according to claim 3 or 4, characterized in that, A first manual shut-off valve is installed on the feed pipe, and several pneumatic regulating valves are installed at the end of the feed pipe away from the first manual shut-off valve.

6. The integrated heating device for flue gas denitrification according to claim 5, characterized in that, An auxiliary feed pipe is fixedly connected to the feed pipe, and a second manual shut-off valve is fixedly connected to the auxiliary feed pipe.

7. The integrated heating device for flue gas denitrification according to claim 6, characterized in that, A first branch pipe is fixedly connected to the feed pipe, and a first valve is fixedly connected to the first branch pipe.

8. The integrated heating device for flue gas denitrification according to claim 7, characterized in that, A second branch pipe is fixedly connected to the feed pipe, and a third valve is fixedly connected to the second branch pipe.

9. The integrated heating device for flue gas denitrification according to claim 1, characterized in that, A control cabinet is mounted on the side panel, and an adjustment mechanism matching the control cabinet is provided on the side panel.

10. An integrated heating device for flue gas denitrification according to claim 9, characterized in that, The side plate has a through hole, and the adjustment mechanism includes a first waist hole on the side plate that matches the through hole. A connecting plate that matches the first waist hole is slidably connected to the side plate, and a second waist hole is provided on the connecting plate.

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