Ultra-high temperature organic heat carrier boiler

Abstract

The utility model relates to a boiler technical field, concretely is a kind of ultrahigh temperature organic heat carrier boiler, including shell, the inside installation of shell has coil pipe, the upper portion side of shell is connected with smoke flue, the outer end of smoke flue is connected with air preheating module, the bottom end of shell is installed with burner, the upper and lower ends of coil pipe are installed with inlet and outlet water pipe seat, air preheating module includes the flue gas passage for flue gas to pass through, the inside of flue gas passage is provided with air preheating pipe, the upper end of air preheating pipe is connected with the air to be heated, the lower end of air preheating pipe is connected with the air inlet end of burner.The ultrahigh temperature organic heat carrier boiler, in energy utilization efficiency aspect, the coil pipe installed in shell interior cooperates air preheating module, and heat exchange process is optimized.Air preheating pipe is arranged in the shape of a snake in flue gas passage, substantially increases the contact area and contact time of air and flue gas, so that air can fully absorb the waste heat in flue gas, effectively improves air preheating effect.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to an ultra-high temperature organic heat carrier boiler. Background Technology

[0002] In industrial production, organic heat carrier boilers play an indispensable role as important heating equipment. Organic heat carrier boilers can achieve high-temperature heating at relatively low pressure, and have advantages such as high efficiency, energy saving, and stable operation. Therefore, they are widely used in many industries such as chemical, food, and textile.

[0003] However, existing organic heat carrier boilers still have some problems that urgently need to be solved. Traditional organic heat carrier boilers, such as the one disclosed in Chinese patent CN205641540U, while achieving comprehensive heat utilization to a certain extent, still have room for improvement in energy efficiency and environmental performance. On the one hand, in terms of energy utilization, the heat exchange process is insufficient, resulting in some energy not being effectively utilized and causing energy waste. On the other hand, in terms of environmental protection, the flue gas produced by combustion contains a certain amount of dust and other pollutants, which, if directly emitted, will have adverse effects on the environment.

[0004] Furthermore, the air preheating effect of traditional organic heat carrier boilers is unsatisfactory. Ordinary air preheating devices have a simple structure and low heat exchange efficiency between air and flue gas. They cannot fully absorb the waste heat in the flue gas to preheat the air, resulting in a lower air temperature entering the burner during operation. This is not conducive to complete fuel combustion and thus affects the overall thermal efficiency of the boiler. Moreover, some existing air preheating devices are inconvenient to install and maintain, increasing operating costs and operational difficulty. Utility Model Content

[0005] The purpose of this invention is to provide an ultra-high temperature organic heat carrier boiler to address the problem mentioned in the background art: insufficient heat exchange in energy utilization leads to inefficient energy utilization and energy waste. Furthermore, the combustion flue gas contains a certain amount of dust and other pollutants, which, if directly emitted, will have adverse environmental impacts.

[0006] To achieve the above objectives, this utility model provides an ultra-high temperature organic heat carrier boiler, including an outer shell, a coil installed inside the outer shell, a flue gas duct connected to the upper side of the outer shell, an air preheating module connected to the outer end of the flue gas duct, a burner installed at the bottom of the outer shell, inlet and outlet water pipe seats installed at the upper and lower ends of the coil, the air preheating module including a flue gas passage for flue gas to pass through, an air preheating pipe arranged inside the flue gas passage, the upper end of the air preheating pipe receiving heated air, and the lower end of the air preheating pipe connected to the air inlet of the burner.

[0007] This configuration includes an internal coil installed in the casing, serving as a flow channel for the organic heat carrier. Heat is generated by combustion in the burner and transferred to the organic heat carrier within the coil, achieving heat exchange. A flue gas duct is connected to the upper side of the casing, and the outer end of the flue gas duct is connected to an air preheating module. The high-temperature flue gas generated by combustion enters the air preheating module through the flue gas duct. The air preheating pipe in the flue gas duct facilitates heat exchange between the flue gas and the air to be heated. The preheated air is then introduced into the burner inlet, forming an air preheating cycle.

[0008] Preferably, the top of the housing is fitted with a cover, and an explosion-proof door is fitted on the cover.

[0009] This feature includes a top cover installed on the outer casing, which serves to seal and protect the internal structure of the boiler. The explosion-proof door is based on the pressure relief principle. When the pressure inside the boiler exceeds the set threshold due to various reasons (such as abnormal fuel combustion, pressure control system failure, etc.), the explosion-proof door will automatically open to release the high-pressure gas inside.

[0010] Preferably, a nameplate and warning label are installed on the outer wall of the housing.

[0011] This nameplate records basic boiler information (such as model, specifications, manufacturer, production date, etc.) through engraving or pasting; warning labels, in accordance with safety regulations, indicate equipment operation precautions, potential hazards, and emergency handling methods, drawing the attention of operators through visual cues.

[0012] Preferably, a foundation is installed on the bottom side of the outer casing, and the lower end of the foundation is buried in the ground.

[0013] This feature involves installing a foundation on the bottom side of the outer casing, with the lower end of the foundation buried in the ground. By utilizing the bearing capacity and friction of the soil, the weight of the boiler and the forces generated during operation are distributed and transferred underground, forming a stable support structure.

[0014] Preferably, a ladder is installed on the outside of the housing.

[0015] This feature involves installing a ladder on the outside of the outer shell. Utilizing the principle of mechanical support, and through reasonable structural design and material selection, the ladder is designed to withstand the weight of the operator, providing them with access from the ground to the top of the boiler.

[0016] Preferably, the air preheating pipes are arranged in a serpentine pattern inside the flue gas passage.

[0017] This design involves serpentine arrangement of the air preheating pipes within the flue gas duct. By increasing the length and tortuous path of the air preheating pipes, the contact time between the air and the flue gas is extended, while simultaneously increasing the contact area between the two. Based on the principle of heat transfer, this allows the air to more fully absorb the heat from the flue gas.

[0018] Preferably, the upper end of the flue gas passage is connected to the flue gas duct through a flue gas inlet, and the lower end of the flue gas passage discharges the flue gas through a flue gas outlet.

[0019] This flue gas passage is connected to the flue gas duct through the flue gas inlet. It utilizes the pressure difference and flow characteristics of the flue gas itself to allow the flue gas generated by boiler combustion to enter the flue gas passage from the flue gas duct. After flowing in the passage, the flue gas is discharged through the flue gas outlet, forming a flue gas circulation path.

[0020] Preferably, a dust removal chamber is installed at the lower part of the flue gas passage near the flue gas outlet. The flue gas in the flue gas passage is discharged from the flue gas outlet after passing through the dust removal chamber. The dust removal chamber is equipped with clean water for adsorbing dust, and a drain pipe is connected to the bottom of one side of the dust removal chamber.

[0021] This device installs a dust collection chamber at the bottom of the flue gas duct near the flue gas outlet. Utilizing the principles of gravity settling and water adsorption, when the flue gas enters the dust collection chamber, larger dust particles settle under gravity, while smaller dust particles and some pollutants are adsorbed by water. The purified flue gas is then discharged from the flue gas outlet. The sewage pipe is used to periodically discharge wastewater containing pollutants from the dust collection chamber.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this ultra-high temperature organic heat carrier boiler, the coils installed inside the outer shell, in conjunction with the air preheating module, optimize the heat exchange process in terms of energy utilization efficiency. The air preheating tubes are arranged in a serpentine pattern within the flue gas passage, significantly increasing the contact area and contact time between air and flue gas. This allows the air to fully absorb the waste heat from the flue gas, effectively improving the air preheating effect. The preheated air enters the burner, significantly improving fuel combustion efficiency and ensuring more complete combustion, thereby reducing energy waste and improving the overall energy utilization efficiency of the boiler.

[0024] In terms of environmental performance, the dust removal chamber at the bottom of the flue gas passage is filled with clean water to absorb dust. Before being discharged, the flue gas passes through the dust removal chamber, where dust and other pollutants are effectively absorbed by the clean water, significantly reducing the pollutant content in the flue gas. This method effectively reduces environmental pollution during boiler operation, improves the boiler's environmental performance, and meets the current requirements for green and environmentally friendly industrial production.

[0025] In terms of equipment safety and practicality, the explosion-proof door installed on the top of the shell can release pressure in time when the internal pressure of the boiler rises abnormally, effectively preventing explosion accidents and ensuring the safety of the equipment and operators; the nameplate and warning labels on the outer wall of the shell make it easy for operators to understand equipment information and safety precautions; the foundation installed on the bottom side makes the boiler installation more stable; the ladder installed on the outside facilitates the operation of the equipment for inspection and maintenance, improving the convenience and practicality of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the air preheating module in this utility model;

[0028] Figure 3 This is a schematic diagram of the dust removal chamber in this utility model;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Explosion-proof door; 2. Top cover; 3. Coil; 4. Outer shell; 5. Smoke duct; 6. Nameplate; 9. Warning label; 10. Air preheating module; 101. Smoke duct; 102. Air preheating pipe; 103. Smoke inlet; 104. Smoke outlet; 105. Dust removal chamber; 1051. Sewage pipe; 11. Foundation; 12. Burner; 13. Inlet and outlet water pipe base; 14. Ladder. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides an ultra-high temperature organic heat carrier boiler, such as Figure 1 , Figure 2 As shown, the device includes a housing 4, a coil 3 installed inside the housing 4, a flue gas duct 5 connected to the upper side of the housing 4, an air preheating module 10 connected to the outer end of the flue gas duct 5, a burner 12 installed at the bottom of the housing 4, and inlet and outlet water pipe seats 13 installed at the upper and lower ends of the coil 3. The air preheating module 10 includes a flue gas passage 101 for flue gas to pass through, an air preheating pipe 102 installed inside the flue gas passage 101, the upper end of the air preheating pipe 102 receiving preheated air outside, and the lower end of the air preheating pipe 102 connected to the air inlet of the burner 12.

[0033] In this embodiment, as Figure 1 As shown, a top cover 2 is installed on the top of the outer casing 4, and an explosion-proof door 1 is installed on the top cover 2.

[0034] Specifically, the outer wall of the outer casing 4 is fitted with a nameplate 6 and a warning label 9.

[0035] Furthermore, such as Figure 1 As shown, a foundation 11 is installed on the bottom side of the outer casing 4, and the lower end of the foundation 11 is buried in the ground.

[0036] Furthermore, such as Figure 1 As shown, a ladder 14 is installed on the outside of the outer casing 4.

[0037] Furthermore, such as Figure 2 As shown, the air preheating pipes 102 are arranged in a serpentine pattern inside the flue gas passage 101.

[0038] Furthermore, such as Figure 2 As shown, the upper end of the flue gas passage 101 is connected to the flue gas duct 5 through the flue gas inlet 103, and the lower end of the flue gas passage 101 discharges the flue gas through the flue gas outlet 104.

[0039] Furthermore, such as Figure 2 , Figure 3 As shown, a dust removal chamber 105 is installed at the lower part of the channel 101 near the smoke outlet 104. The flue gas in the flue gas channel 101 is discharged from the smoke outlet 104 after passing through the dust removal chamber 105. The dust removal chamber 105 is filled with clean water for adsorbing dust, and a drain pipe 1051 is connected to the bottom of one side of the dust removal chamber 105.

[0040] In operation, the ultra-high temperature organic heat carrier boiler of this invention first generates heat. The burner 12 is started, and the fuel burns within it, releasing a large amount of heat. This heat is transferred to the coils 3 inside the outer shell 4 via thermal radiation and convection.

[0041] Next comes the heat transfer process. Coil 3 serves as the flow channel for the organic heat carrier, and its interior is filled with the organic heat carrier. When coil 3 absorbs the heat generated by combustion, it transfers the heat to the organic heat carrier inside the coil through heat conduction. The organic heat carrier heats up, and the continuously increasing temperature of the organic heat carrier flows out of the boiler through the inlet and outlet water pipe seats 13, delivering the heat it carries to the stages of industrial production that require heating, thus completing the heat output. At the same time, the low-temperature organic heat carrier flows back into coil 3 through the inlet and outlet water pipe seats 13 to continue absorbing heat, forming a circulation of the organic heat carrier and continuously supplying heat for industrial production.

[0042] Next is the air preheating stage. The high-temperature flue gas generated by combustion enters the flue gas channel 101 of the air preheating module 10 through the flue gas duct 5. Since the air preheating pipes 102 are arranged in a serpentine pattern within the flue gas channel 101, this significantly increases the contact area and contact time between the flue gas and the air preheating pipes 102. The air to be heated flows in from the upper end of the air preheating pipes 102, and during its flow within the pipes, it fully absorbs the heat from the flue gas according to the principle of heat transfer, thus achieving preheating. The preheated air flows out from the lower end of the air preheating pipes 102 and enters the air inlet of the burner 12. The preheated air enables the fuel to burn more completely within the burner 12, improving combustion efficiency, reducing fuel waste, and further enhancing the boiler's energy utilization efficiency.

[0043] Finally, there is the flue gas treatment process. After releasing heat in the air preheating module 10, the high-temperature flue gas continues to flow downwards and enters the dust collection chamber 105 at the lower part of the flue gas channel 101, near the flue gas outlet 104. Inside the dust collection chamber 105, the flue gas is purified using the principles of gravity settling and water adsorption. Larger dust particles naturally settle to the bottom of the dust collection chamber 105 under gravity, while smaller dust particles and some pollutants are adsorbed by the water inside the dust collection chamber 105. The purified flue gas is discharged from the flue gas outlet 104, reducing the content of dust and pollutants in the flue gas and reducing environmental pollution. The wastewater in the dust collection chamber 105, which has adsorbed dust and pollutants, can be periodically discharged through the drain pipe 1051 to replace the clean water and ensure that the dust collection chamber 105 continues to effectively perform its dust removal function.

[0044] Throughout operation, the top cover 2 and explosion-proof door 1 of the outer casing 4 provide protection and safety. The top cover 2 seals the top of the boiler, protecting the internal structure from external environmental influences. When the internal pressure of the boiler exceeds a set threshold due to abnormal conditions such as violent fuel combustion or system malfunction, the explosion-proof door 1 automatically opens to release the high-pressure gas inside, preventing the boiler from exploding and ensuring the safety of equipment and personnel. The nameplate 6 and warning label 9 on the outer wall of the outer casing 4 provide operators with equipment information and safety reminders. The foundation 11 on the bottom side ensures the boiler is stably installed. The external ladder 14 facilitates operators' inspection and maintenance of the boiler, collectively ensuring the stable, safe, and efficient operation of the boiler.

[0045] Finally, it should be noted that the electronic components in the burner 12 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between the electrical components in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ultra-high temperature organic heat carrier boiler, comprising an outer shell (4), characterized in that: The housing (4) is equipped with a coil (3) inside. A flue gas duct (5) is connected to the upper side of the housing (4). An air preheating module (10) is connected to the outer end of the flue gas duct (5). A burner (12) is installed at the bottom of the housing (4). Water inlet and outlet pipe seats (13) are installed at the upper and lower ends of the coil (3). The air preheating module (10) includes a flue gas passage (101) for flue gas to pass through. An air preheating pipe (102) is provided inside the flue gas passage (101). The upper end of the air preheating pipe (102) receives the preheated air, and the lower end of the air preheating pipe (102) is connected to the air inlet of the burner (12).

2. The ultra-high temperature organic heat carrier boiler according to claim 1, characterized in that: The top of the outer shell (4) is fitted with a cover (2), and an explosion-proof door (1) is fitted on the cover (2).

3. The ultra-high temperature organic heat carrier boiler according to claim 1, characterized in that: The outer wall of the outer casing (4) is fitted with a nameplate (6) and a warning label (9).

4. The ultra-high temperature organic heat carrier boiler according to claim 1, characterized in that: A foundation (11) is installed on the bottom side of the outer shell (4), and the lower end of the foundation (11) is buried in the ground.

5. The ultra-high temperature organic heat carrier boiler according to claim 1, characterized in that: A ladder (14) is installed on the outside of the outer shell (4).

6. The ultra-high temperature organic heat carrier boiler according to claim 1, characterized in that: The air preheating pipe (102) is arranged in a serpentine pattern inside the flue gas passage (101).

7. The ultra-high temperature organic heat carrier boiler according to claim 1, characterized in that: The upper end of the flue gas passage (101) is connected to the flue gas duct (5) through the flue gas inlet (103), and the lower end of the flue gas passage (101) discharges the flue gas through the flue gas outlet (104).

8. The ultra-high temperature organic heat carrier boiler according to claim 7, characterized in that: A dust removal chamber (105) is installed at the lower part of the flue gas passage (101) near the flue gas outlet (104). The flue gas in the flue gas passage (101) is discharged from the flue gas outlet (104) after passing through the dust removal chamber (105). The dust removal chamber (105) is filled with clean water for adsorbing dust. A drain pipe (1051) is connected to the bottom of one side of the dust removal chamber (105).

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