A device for gasification of a light hydrocarbon gas

Abstract

The utility model provides a kind of mixed air light hydrocarbon gas gasification device, including closed container and the horizontal plane below hot water of being immersed in closed container, and the first mixer, second mixer and third mixer of being arranged in turn, wherein: the top of first mixer is provided with oil inlet pipeline and nozzle at the outlet of oil inlet pipeline, lower part side connects air inlet pipeline;Second mixer one end side connects first mixer upper part, other end side connects third mixer lower part;And the upper part of third mixer side connects gas discharge pipeline, and discharge pipeline is connected with gas holder.The utility model is arranged in series in constant-temperature hot water environment by three-stage mixer, cooperate with circulating pump driven hot water inner circulation system, realize the full gasification and mixing of light hydrocarbon fuel gradually, effectively solve the problem of low gasification efficiency and large heat value fluctuation in traditional technology, with the advantages of improving gasification efficiency and thermal stability, reducing light hydrocarbon residual accumulation.

Description

Technical Field

[0001] This utility model belongs to the field of clean energy preparation technology, and relates to a light hydrocarbon gasification device, and more particularly to a mixed-air light hydrocarbon gasification device. Background Technology

[0002] With the accelerated global energy structure transformation, liquefied light hydrocarbon gasification technology, as an important solution for the transition from traditional petrochemical energy to clean energy, has demonstrated significant advantages in the field of distributed energy supply. Light hydrocarbon fuels such as pentane, due to their excellent carbon-to-hydrogen ratio and clean combustion characteristics, can effectively solve the problem of insufficient pipeline natural gas coverage in remote areas after being converted into mixed-air gas through gasification processes. Pentane gasification typically refers to the industrial process of producing combustible gases (such as liquefied petroleum gas (LPG), synthetic natural gas (SNG), or hydrogen) from pentane (C5H12, a liquid light hydrocarbon) through chemical or physical processing. It is widely used in residential fuels, commercial fuels, industrial fuels, and chemical feedstocks.

[0003] Traditional mixed-air light hydrocarbon gasification processes mainly employ two technical routes: bubbling and evaporator gasification. Bubbling generates bubbles by blowing air through liquid light hydrocarbons to achieve gasification, but it suffers from drawbacks such as large fluctuations in the calorific value of the gas and low gasification efficiency. Evaporator gasification, while promoting gasification through heated pipelines, generally faces problems such as the accumulation of residual light hydrocarbons and uneven heat conduction leading to localized overheating or incomplete gasification. Both methods require frequent manual intervention to adjust parameters, resulting in slow response to fluctuations in gas consumption. Furthermore, the equipment is bulky, complex in structure, energy-intensive, and cumbersome to operate.

[0004] More significantly, existing technologies struggle to balance the trade-off between gasification efficiency and thermal stability. When increasing gas production, traditional units are prone to forming a light hydrocarbon deposit at the bottom, which not only reduces heat exchange efficiency but also causes fluctuations in gas composition, severely impacting the operational stability of terminal combustion equipment. These technological bottlenecks severely restrict the application and promotion of mixed-air light hydrocarbon gas in scenarios with high requirements for calorific value stability, such as commercial heating and industrial heat treatment. Therefore, it is necessary to improve existing technologies. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a gasification device for mixed-air light hydrocarbon fuel gas that can completely gasify the gas, has a stable calorific value, and has a simple structure, in order to address the shortcomings of the existing technology.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0007] A gasification device for mixed-air light hydrocarbon fuel gas includes a sealed container and a first mixer, a second mixer, and a third mixer arranged sequentially below the horizontal level of hot water within the sealed container, wherein:

[0008] The first mixer is provided with an oil inlet pipe and a nozzle located at the outlet of the oil inlet pipe at the top, and an air inlet pipe is connected to the lower side; one end of the second mixer is connected to the upper part of the first mixer, and the other end is connected to the lower part of the third mixer; and the upper part of the third mixer is connected to a gas exhaust pipe, and the exhaust pipe is connected to a gas storage tank.

[0009] Preferably, the top opening of the sealed container is detachably provided with a container lid, and both the outer periphery of the container and the container lid are provided with a heat insulation layer.

[0010] Preferably, a level gauge is provided on the left side wall of the sealed container, a drain outlet is provided at the bottom, and container feet are provided at the four corners of the bottom.

[0011] Preferably, an automatic water filling mechanism is provided at the upper end of the right side wall of the sealed container, and an electric heater is provided at the bottom.

[0012] Preferably, a hot water internal circulation inlet and a hot water internal circulation outlet are provided from top to bottom at the middle position of the right side wall of the sealed container, wherein:

[0013] The internal water circulation inlet and the internal hot water circulation outlet are connected to an external circulation pump via pipes. The internal hot water circulation inlet is located near the automatic water filling mechanism above, and the internal hot water circulation outlet is located near the electric heater below.

[0014] Preferably, the first and third mixers are square or circular mixers, and the second mixer is a tortuous S-shaped, grid-shaped, mosquito coil-shaped, or spiral pipeline mixer.

[0015] Preferably, the first mixer and the third mixer are fixedly installed on the bottom surface inside the sealed container by mounting bases, and the second mixer is fixedly installed between the two.

[0016] The first mixer, the second mixer, and the third mixer are arranged sequentially from left to right, and their horizontal height is between the horizontal height of the automatic water filling mechanism above and the horizontal height of the electric heater below.

[0017] Preferably, the bottom of the first mixer is provided with a slag discharge pipe, and the outlet end of the slag discharge pipe is located at the lower end of one side wall of the sealed container.

[0018] Preferably, the external ends of the air inlet pipe and the outlet pipe are respectively located at the top of the corresponding side wall of the sealed container, and both are located above the water level inside the sealed container.

[0019] Preferably, the oil inlet pipe, the air inlet pipe, and the discharge pipe are all made of stainless steel corrugated pipe, which are connected to the corresponding mixer to form a closed loop.

[0020] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0021] The gasification device for light hydrocarbon fuel provided by this utility model achieves the step-by-step full gasification and mixing of light hydrocarbon fuel through the series arrangement of three-stage mixers in a constant temperature hot water environment, combined with a hot water internal circulation system driven by a circulating pump. It effectively solves the problems of low gasification efficiency and large calorific value fluctuation in traditional technologies, and has the advantages of improving gasification efficiency and thermal stability, and reducing the accumulation of light hydrocarbon residues. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a mixed-air light hydrocarbon gasification device according to the present invention.

[0023] The accompanying figures are labeled as follows:

[0024] 1-Sealed container, 2-Container lid, 3-First mixer, 4-Second mixer, 5-Third mixer, 6-Oil inlet pipe, 7-Nozzle, 8-Air inlet pipe, 9-Gas exhaust pipe, 10-Electric heater, 11-Level gauge, 12-Automatic water filling mechanism, 13-Hot water internal circulation inlet, 14-Hot water internal circulation outlet, 15-Slag discharge pipe, 16-Drain outlet, 17-Hot water, 18-Container base, 19-Insulation layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In existing technologies, the gasification of mixed-air light hydrocarbon fuels has long relied on bubbling and evaporator gasification techniques. Bubbling achieves gasification by purging liquid light hydrocarbons with air, but suffers from large fluctuations in calorific value and low gasification efficiency. Evaporator gasification relies on heating pipes to raise the temperature, but gasification is incomplete, the equipment is bulky, and frequent manual adjustments are required during operation. Furthermore, as the gas production rate increases, unvaporized oil tends to accumulate at the bottom of the container, further exacerbating calorific value instability. The complex piping layout and inefficient heat exchange mechanisms of traditional devices limit the widespread application of mixed-air light hydrocarbon fuels.

[0028] To address the aforementioned issues, researchers noted that the heat absorption efficiency during the vaporization of liquid light hydrocarbons directly affects the stability of the calorific value. Analysis revealed that traditional single-stage mixing structures cannot provide sufficient gas-liquid contact time and a uniform thermal field distribution. Further research showed that connecting multiple mixers in series can extend the vaporization path, while enveloping the mixer in a constant-temperature medium can maintain a stable heat absorption environment. Based on this, a design approach was proposed that involves immersing the mixer in hot water and employing a three-stage progressive vaporization structure.

[0029] Therefore, as Figure 1 As shown, this application proposes a gasification device comprising a first mixer 3, a second mixer 4, and a third mixer 5 arranged sequentially in a sealed container 1 submerged below the level of hot water 17 within the sealed container 1. The first mixer 3 has an oil inlet pipe 6 and a nozzle 7 at its top, and an air inlet pipe 8 connected to its lower side. The second mixer 4 connects the upper part of the first mixer 3 to the lower part of the third mixer 5. The upper side of the third mixer 5 is connected to a gas exhaust pipe 9 and an external gas storage tank.

[0030] The sealed container 1 refers to the enclosed cavity that carries the hot water medium and the mixer assembly. It can be made of welded stainless steel plates and its function is to provide a constant temperature environment for the gasification process. The first mixer 3 refers to the cavity that completes the initial mixing of oil and gas. It can be implemented using a stainless steel container with internal guide plates, where the liquid light hydrocarbons are atomized through the top nozzle 7 and flow counter-currently with the air entering from below. The second mixer 4 refers to a circuitous pipeline that extends the gasification path. It can be implemented using a spiral stainless steel pipe to increase the gas-liquid contact time. The third mixer 5 refers to the cavity for final gasification and gas-liquid separation. It can be implemented using a cylindrical structure with a baffle at the top, where the fuel gas and liquid medium are separated through an upper lateral outlet.

[0031] Specifically, liquid light hydrocarbons are atomized through nozzles and enter the first mixer 3, where they undergo preliminary mixing with the air entering from below. The mixed gas then enters the circuitous pipeline of the second mixer 4, where it continuously absorbs heat under the influence of hot water. The third mixer 5 discharges the vaporized fuel gas through its upper lateral outlet. Unvaporized oil in the first mixer 3 settles and can be discharged through the bottom slag discharge pipe 15. The three-stage mixers form a continuous vaporization path through their spatial layout, and the hot water medium is maintained at a constant temperature by a circulating pump, ensuring complete vaporization under different gas production loads.

[0032] Compared to existing technologies, traditional bubbling methods rely on single-stage gas-liquid contact, while this solution extends the vaporization path through a three-stage mixer, allowing unvaporized oil to fully absorb heat. Compared to the complex structure of evaporators that rely on external heating pipes for gas production, this solution immerses the entire three-stage mixer in hot water, simplifying equipment layout while improving heat exchange efficiency. The circuitous piping design of the second mixer 4 replaces the traditional straight-through pipe, achieving a longer vaporization path within the same space.

[0033] Through the above technical solution, this application achieves complete gasification of mixed-air light hydrocarbon fuel gas, eliminating the phenomenon of oil accumulation at the bottom of the container. A stable hot water environment ensures the heat supply for the gasification process, solving the problem of large calorific value fluctuations in traditional technologies. The integrated design of the three-stage mixer simplifies the equipment structure, reduces operational complexity, and is suitable for gas supply scenarios of different scales.

[0034] In some of these embodiments, such as Figure 1 As shown, this application further proposes that the top opening of the sealed container 1 is detachably provided with a container lid 2, and both the outer periphery of the container and the container lid 2 are provided with a heat insulation layer 19.

[0035] The removable container cover 2 refers to a movable cover plate fixed to the top of the sealed container 1 via a flange connection or snap-fit ​​structure. Specifically, it can be secured with bolts or a quick-locking mechanism, facilitating disassembly for inspection and cleaning of the mixer and piping inside the container. The insulation layer 19 refers to the heat-insulating material layer covering the outer wall of the sealed container 11 and the surface of the container cover 2. Specifically, it can be made of rock wool, polyurethane foam, or ceramic fiber materials, used to prevent heat transfer between the hot water inside the container and the external environment.

[0036] Specifically, the removable container cover 2 is installed on top of the sealed container 1 via a flange connection, and a sealing gasket can be installed on the flange connection surface to ensure airtightness. When it is necessary to inspect the mixer or clean the inside of the container, the container cover 2 can be removed simply by loosening the flange bolts, without the need to disassemble the entire container structure. The insulation layer 19 is fixed to the outer wall 1 of the container and the outer side of the container cover 2 in a wrapping manner, forming a thermal resistance barrier through a low thermal conductivity insulation material, reducing the loss of heat from the hot water to the external environment through the container wall. This design ensures that the internal water temperature of the sealed container 1 remains stable under the action of the electric heater 10 and the internal circulation system, avoiding incomplete vaporization of the light hydrocarbons due to insufficient heat absorption in the mixed air caused by heat loss.

[0037] Through the above technical solution, this application effectively reduces the heat loss rate of the hot water inside the sealed container 1, maintains the stability of the temperature environment required for the gasification of light hydrocarbons in mixed air, and at the same time realizes the rapid inspection and maintenance of the internal components of the equipment through the design of the detachable container cover 2, reducing downtime and improving the convenience of operation.

[0038] In some of these embodiments, such as Figure 1 As shown, this application further proposes that a liquid level gauge 11 is provided on the left side wall of the sealed container 1, a drain port 16 is provided at the bottom, and container feet 18 are provided at the four corners of its bottom.

[0039] The level gauge 11 is a device used to monitor the hot water level inside the sealed container 1. It can be a transparent window-type level gauge or an electronic sensor-type level gauge, ensuring the mixer is always submerged in hot water by displaying the liquid level in real time. The drain port 16 is a channel for draining residual liquid from the bottom of container 1. It can be implemented using a pipe structure with a valve, allowing sediment or unvaporized light hydrocarbon oil to be drained periodically by opening the valve. The container feet 18 are the fixed structure supporting the sealed container. They can be implemented using metal brackets with rubber shock-absorbing pads. Symmetrical distribution at the four corners enhances the overall stability of the device, and the container feet 18, in conjunction with the rubber pads, secure the entire device to the equipment.

[0040] Specifically, the level gauge 11 is installed in the middle of the left side wall of the sealed container 1. Operators can monitor the hot water level changes in real time through external observation. When the level falls below a set threshold, the automatic water-adding mechanism 12 is triggered to replenish water, preventing the mixers from being exposed to the liquid surface and thus reducing vaporization efficiency. The drain port 16 is located at the lowest point of the sealed container 1, ensuring complete discharge of residual liquid through gravity, preventing the accumulation of unvaporized light hydrocarbon oil and its impact on calorific value stability. The container feet 18 are distributed at the four corners of the bottom, using a symmetrical support structure to offset vibrations generated during equipment operation, preventing errors in the level gauge monitoring data due to vibration.

[0041] In some of these embodiments, such as Figure 1 As shown, this application further proposes to install an automatic water filling mechanism 12 at the upper end of the right side wall of the sealed container 1, and to install an electric heater 10 at the bottom. The automatic water filling mechanism 12 is connected to the tap water network.

[0042] The automatic water-adding mechanism 12 is a device used to maintain the hot water level in the container. It can be implemented using a conventional stainless steel float valve that automatically stops when the water level is full. When the water level falls below a set threshold, it automatically triggers the water-adding action. This mechanism monitors the water level through mechanical linkage or electronic sensors to ensure the mixer is always completely submerged in hot water. The electric heater 10 is a device used to heat the water at the bottom of the container. It can be implemented using a conventional heat pipe or resistance wire heating module. This heater 10 adjusts its output power through a temperature feedback control system to maintain the water temperature within the optimal vaporization temperature range for light hydrocarbon oil.

[0043] Specifically, the automatic water filling mechanism 12 is installed at the upper end of the right side wall of the sealed container 1. When the water level drops due to evaporation or leakage, the float valve opens the water inlet channel as the water level drops, and external water is replenished to the set water level through the pipeline. The electric heater 10 is arranged at the bottom of the container to directly heat the water in a gradient. After being heated, the hot water naturally circulates, and the heat is transferred to the submerged mixer pipeline by conduction. The coordinated control of the two ensures that the environment of the mixer simultaneously meets the requirements of constant immersion depth and stable temperature field, eliminating the local vaporization interruption caused by liquid level fluctuations and the decrease in heat absorption efficiency caused by uneven temperature.

[0044] Through the above technical solution, this application effectively solves the problems of localized gasification interruption caused by mixer exposure due to water level drop, and insufficient heat absorption of light hydrocarbon oil due to insufficient bottom water temperature. The automatic water replenishment mechanism maintains the mixer in a continuously submerged state, and bottom heating ensures uniform water temperature distribution. The synergistic effect of the two allows the gasification reaction to proceed under constant thermodynamic conditions, significantly improving the stability of the gas calorific value and gasification efficiency.

[0045] In some of these embodiments, such as Figure 1 As shown, this application further proposes to provide a hot water internal circulation inlet 13 and a hot water internal circulation outlet 14 from top to bottom in the middle of the right side wall of the sealed container 1. The hot water internal circulation inlet 13 and the hot water internal circulation outlet 14 are connected to an external circulation pump through a pipe. The hot water internal circulation inlet 13 is arranged close to the automatic water filling mechanism 12 above, and the hot water internal circulation outlet 14 is arranged close to the electric heater 10 below.

[0046] The hot water internal circulation inlet 13 refers to the fluid injection interface located in the upper part of the container's side wall. This can be implemented using a flanged tubular structure, used to inject hot water from external circulation into the container. The hot water internal circulation outlet 14 refers to the fluid extraction interface located in the lower part of the container's side wall. This can be implemented using a tubular structure with a filter screen, used to extract hot water from the bottom area. The circulation pump is the power device that drives the fluid to circulate in a closed loop. It can be implemented using a centrifugal water pump, used to force the hot water to form a directional flow between the container and the external pipeline.

[0047] Specifically, the hot water internal circulation outlet 14 is located near the electric heater 10, allowing direct extraction of the heated high-temperature liquid from the bottom. This high-temperature liquid is then transported to an external pipeline for heat exchange via a circulation pump, before being injected into the upper part of the container through the hot water internal circulation inlet 13. The injected hot water mixes with the cold water replenished by the automatic water filling mechanism 12 at the top of the container, creating a top-down temperature gradient compensation. This circulation path forms a reverse heat transfer with the bottom-up heating direction of the electric heater 10. Forced circulation eliminates temperature stratification caused by natural convection, ensuring that the hot water temperature in the area where the mixer is located remains within a set range.

[0048] Through the above technical solution, this application achieves a uniform temperature distribution of hot water 17 in the sealed container 1, ensures the stability of heat supply to the liquid medium around the mixer, effectively eliminates the phenomenon of incomplete gasification of light hydrocarbons caused by local temperature fluctuations, and keeps the output of gas calorific value constant.

[0049] In some of these embodiments, such as Figure 1 As shown, this application further proposes that the first mixer 3 and the third mixer 5 are square or circular structure mixers; the second mixer 4 is a tortuous S-shaped, grid-shaped, mosquito coil-shaped, or spiral pipeline structure mixer, so that the light hydrocarbons in the mixed air can obtain sufficient heat absorption time in the pipeline to achieve full air mixing.

[0050] Among them, square or circular structure mixers refer to cavity structures with regular geometric cross-sections, which can be achieved by welding stainless steel plates to form closed cavities, used to create a stable mixing space. Among them, tortuous pipeline structure mixers refer to pipeline structures with continuous curved paths, which can be achieved by molding or segmented welding processes to form S-shaped, grid-shaped, spiral, and other topological shapes, used to extend the mixing path.

[0051] Specifically, square or circular mixers serve as mixing units at both ends, creating a stable airflow distribution area through a regular cross-section, allowing for initial uniform mixing of liquid light hydrocarbons and air during the initial stage. The middle, meandering pipeline mixer forces turbulence in the mixed gas through a continuously curved path, creating a flow trajectory with multiple directional changes within the hot water of the sealed container, thereby increasing the contact area and residence time with the heating medium. This combined structure forms a three-stage mixing process within a limited container space: the initial stage achieves basic mixing, the middle stage enhances heat exchange through a meandering path, and the final stage completes the final vaporization output.

[0052] Through the above technical solution, this application solves the problem of insufficient heat absorption caused by the unreasonable mixer structure in traditional devices. The circuitous pipeline design increases the residence time of the mixed gas in the sealed container 1 by approximately 2-3 times. Actual measurement data shows that the gasification efficiency is improved to over 98%, and the fluctuation range of the gas calorific value is narrowed from ±15% in traditional technology to within ±5%. The mixer assembly structure achieves more complete heat exchange within the same volume, avoiding oil accumulation caused by incomplete gasification.

[0053] In some of these embodiments, such as Figure 1As shown, this application further proposes that the first mixer 3 and the third mixer 5 are respectively fixedly installed on the bottom surface inside the sealed container 1 via mounting bases, and a second mixer 4 is fixedly installed between them; the first mixer 3, the second mixer 4, and the third mixer 5 are arranged sequentially from left to right, and their horizontal height is between the horizontal height of the automatic water adding mechanism 12 above and the electric heater 10 below. The mounting base refers to the support structure used to fix the mixer at the bottom of the container, which can be implemented by bolted connection or welding of a metal base, and its function is to prevent the mixer from shifting due to fluid impact or vibration.

[0054] Specifically, the mounting base fixes the first mixer 3 and the third mixer 5 to the bottom of the container. The second mixer 4 forms an integral structure with the two through a rigid connector, preventing the mixer from shaking due to changes in internal fluid pressure. The mixer group is arranged sequentially in a horizontal direction, allowing the gasification medium to pass through three mixing zones in sequence. The first mixer 3 completes the initial atomization mixing, the second mixer 4 extends the residence time through a circuitous path, and the third mixer 5 performs the final gasification. The vertical position of the mixer group is between the automatic water supply mechanism 12 and the electric heater 10. The automatic water supply mechanism 12 maintains the water level covering the mixer, while the heat generated by the electric heater 10 is evenly transferred to each mixer through water convection, ensuring a constant temperature during the gasification process.

[0055] Through the above technical solution, this application achieves rigid fixation of the mixer assembly within the sealed container 1, eliminating the impact of equipment vibration on the gasification path and ensuring the continuity of the gasification process. The spatial layout of the mixers and the heating system work in synergy, allowing heat to be evenly distributed to each mixer through the water, avoiding local overheating or incomplete gasification. The coordination between water level control and the heating device ensures that the mixers are always in a constant-temperature liquid environment, improving gasification efficiency and the stability of the fuel gas calorific value.

[0056] In some of these embodiments, such as Figure 1 As shown, this application further proposes to provide a slag discharge pipe 15 at the bottom of the first mixer 3, with the outlet end of the slag discharge pipe 15 located at the lower end of one side wall of the sealed container 1. The slag discharge pipe 15 refers to a channel structure connecting the bottom of the mixer to the side wall of the sealed container 1, and can be implemented using a metal pipe or a corrosion-resistant plastic pipe with an inclined angle, the inner diameter of which can be adapted according to the particle size range of the sediment.

[0057] Specifically, during mixer operation, unvaporized liquid light hydrocarbon oil or solid impurities settle to the bottom of the mixer under gravity. The sediment is guided towards the outlet end by the inclined inner wall of the slag discharge pipe 15. The outlet end is located at the lower end of the side wall of the sealed container 1, allowing the sediment to directly enter the external collection device upon discharge, avoiding contact with the hot water inside the container. The slag discharge pipe 15 is connected to the bottom of the mixer by a flange for easy disassembly and maintenance.

[0058] In some of these embodiments, such as Figure 1 As shown, this application further proposes that the external ends of the air inlet pipe 8 and the outlet pipe 9 are respectively located at the top of the corresponding side wall of the sealed container 1, and both are located above the water level of the hot water 17 inside the sealed container 1. The external end refers to the port where the pipe connects to external equipment or pipelines, and can be implemented using flanges, threaded interfaces, or quick couplings. Its position above the water level of the hot water 17 inside the sealed container 11 can prevent liquid backflow.

[0059] In some of its embodiments, such as Figure 1 As shown, this application further proposes that the oil inlet pipe 6, air inlet pipe 8, and discharge pipe 9 all adopt stainless steel corrugated pipes, which are connected to the corresponding mixers to form a closed loop. The stainless steel corrugated pipe refers to a flexible pipe with a corrugated structure made of stainless steel. Specifically, austenitic stainless steel can be used to manufacture corrugated pipe sections through a hydroforming process. Flanges or threaded joints are welded to both ends of the corrugated pipe to achieve connection with the mixer. The corrugated structure gives the pipe axial expansion and contraction capabilities and radial bending capabilities, which can compensate for thermal expansion and contraction deformation caused by temperature changes during equipment operation.

[0060] The closed loop refers to a continuous, closed gas passage consisting of an oil inlet pipe 6, an air inlet pipe 8, an outlet pipe 9, and three mixers. Specifically, each pipe and mixer interface can be fixedly connected by flange sealing or welding to form an uninterrupted fluid passage. This loop eliminates the interface gaps present in traditional segmented connections, ensuring that the vaporized medium completes the mixing and transportation process within a closed space.

[0061] Specifically, liquid light hydrocarbon oil is delivered to nozzle 7 at the top of the first mixer 3 through a stainless steel corrugated pipe in inlet pipe 6. Air enters the lower part of the first mixer 3 through a stainless steel corrugated pipe in inlet pipe 8. The mixed fuel gas is output to the gas storage tank through a stainless steel corrugated pipe in outlet pipe 9. When the equipment operates and temperature fluctuates, the flexible structure of the corrugated pipe absorbs the pipe stress through deformation, preventing cracks or seal failure at rigid connections. In high-temperature and high-humidity environments, the stainless steel material resists the chemical corrosion of light hydrocarbon fuel gas and hot water media, preventing leaks caused by pipe wall corrosion. The corrugated pipes of the three pipelines are sealed to the mixer through flanges, forming a leak-free integrated circuit, maintaining stable internal pressure in the mixer, and preventing external air infiltration or fuel gas leakage.

[0062] In summary, combining Figure 1 As shown, the mixed-air light hydrocarbon gasification device provided in this application has a better heat absorption effect after the liquid light hydrocarbon oil is vaporized through the nozzle 7 (the contact area increases). The entire three-stage mixer is completely immersed in heated hot water 17 (temperature controllable), which allows for more complete heat absorption during the entire mixing process (water has a higher calorific value than air under the same heating temperature and volume). All three mixers are made of stainless steel to prevent rust, forming a three-stage mixing system. In particular, the special design of the second mixer 4 makes the heat absorption during the mixing process more complete and efficient. During the gasification process, the heat required to be absorbed will increase as the amount of mixed-air light hydrocarbon gas produced increases. The temperature of the water in the container can be heated by adjusting the electric heater 10, and the external circulation pump can be started to circulate the hot water in the container to maintain a stable calorific value. Insulation layers 19 and other methods can be used as needed to ensure the quality of the mixed air.

[0063] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0064] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0065] Finally, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gasification device for mixed-air light hydrocarbon fuel gas, characterized in that, Includes a sealed container (1) and a first mixer (3), a second mixer (4), and a third mixer (5) arranged sequentially below the horizontal plane of the hot water (17) inside the sealed container (1), wherein: The first mixer (3) is provided with an oil inlet pipe (6) at the top and a nozzle (7) at the outlet of the oil inlet pipe (6), and an air inlet pipe (8) is connected to the lower side; one end of the second mixer (4) is connected to the upper part of the first mixer (3), and the other end is connected to the lower part of the third mixer (5); and the upper part of the third mixer (5) is connected to a gas exhaust pipe (9), and the exhaust pipe (9) is connected to a gas storage tank.

2. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The top opening of the sealed container (1) is detachably provided with a container lid (2), and both its outer periphery and the container lid (2) are provided with a heat insulation layer (19).

3. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, A liquid level gauge (11) is provided on the left side wall of the sealed container (1), a drain port (16) is provided at the bottom, and container feet (18) are provided at the four corners of the bottom.

4. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, An automatic water filling mechanism (12) is provided at the upper end of the right side wall of the sealed container (1), and an electric heater (10) is provided at the bottom.

5. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The sealed container (1) has a hot water internal circulation inlet (13) and a hot water internal circulation outlet (14) arranged from top to bottom on the middle of the right side wall, wherein: The water circulation inlet (13) and hot water circulation outlet (14) are connected to an external circulation pump via a pipeline. The hot water circulation inlet (13) is arranged near the automatic water filling mechanism (12) above, and the hot water circulation outlet (14) is arranged near the electric heater (10) below.

6. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The first mixer (3) and the third mixer (5) are square or circular structure mixers, and the second mixer (4) is a tortuous S-shaped, grid-shaped, mosquito coil-shaped, or spiral pipeline structure mixer.

7. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The first mixer (3) and the third mixer (5) are respectively fixedly installed on the bottom surface inside the sealed container (1) by mounting bases, and the second mixer (4) is fixedly installed between the two. The first mixer (3), the second mixer (4) and the third mixer (5) are arranged from left to right, and their horizontal height is between the horizontal height of the automatic water filling mechanism (12) above and the electric heater (10) below.

8. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The bottom of the first mixer (3) is provided with a slag discharge pipe (15), and the outlet end of the slag discharge pipe (15) is located at the lower end of one side wall of the sealed container (1).

9. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The external ends of the air inlet pipe (8) and the outlet pipe (9) are respectively located at the top of the corresponding side wall of the sealed container (1), and are both located above the horizontal plane of the hot water (17) inside the sealed container (1).

10. The air-mixed light hydrocarbon gasification device according to claim 1, characterized in that, The oil inlet pipe (6), the air inlet pipe (8), and the discharge pipe (9) are all made of stainless steel corrugated pipes, which are connected to the corresponding mixers to form a closed loop.

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