Oxygen supply structure for a reaction vessel

Abstract

The utility model discloses a reaction kettle oxygen supply structure, including the kettle body, the kettle cover, be provided with the furnace bellow in the kettle body, the bottom of kettle body is provided with the combustion mechanism, and the combustion mechanism is located the furnace bellow outside, and the combustion mechanism includes the burner, annular oxygen supply pipe, oxygen supply box and the gas pipe, and oxygen supply box is fixed in the kettle body bottom, and its top is arranged with the burner, and the bottom surface is equipped with the first oxygen inlet pipe, and the first oxygen inlet pipe extends to the kettle body outside and is connected with the first air blower, and the air is transported to the oxygen supply box from the first air blower, and the oxygen supply box top is equipped with a plurality of gas outlet holes, annular oxygen supply pipe surrounds the oxygen supply box and is arranged, and a plurality of gas outlets are distributed on annular oxygen supply pipe, and one end of annular oxygen supply pipe is provided with the second oxygen inlet pipe, and the device is through the collaborative design of double -way oxygen supply system, liftable combustion mechanism and arc combustible gas injection device, and the oxygen supply uniformity is enhanced significantly and the temperature field control is optimized, thereby realizes the efficient, stable production of high -quality bamboo charcoal.

Description

Technical Field

[0001] This utility model relates to the field of bamboo charcoal processing technology, specifically to an oxygen supply structure for a reaction vessel. Background Technology

[0002] Bamboo charcoal, as a biomass material with excellent adsorption properties and environmental friendliness, is mainly produced industrially using high-temperature pyrolysis reactors. Inside the sealed reactor, bamboo undergoes complex processes such as drying, pyrolysis, and carbonization. The precision, uniformity, and safety of oxygen supply directly determine the quality of bamboo charcoal, energy utilization rate, and equipment lifespan.

[0003] However, the existing oxygen supply structure of the reactor has significant technical bottlenecks, which restrict production efficiency and cost. Most existing reactors use a single blower to supply oxygen through a central pipe at the bottom. This structure results in a radial gradient distribution of oxygen on the cross-section of the furnace chamber—the oxygen concentration in the central area is too high, while the oxygen supply in the peripheral area is insufficient. The direct consequences are that the carbonization of bamboo charcoal takes a long time, the cost of fuel gas increases, the production efficiency is low, and the combustible volatiles of bamboo pyrolysis are not fully combusted, affecting the internal and external environment. Summary of the Invention

[0004] The purpose of this invention is to provide an oxygen supply structure for a reactor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oxygen supply structure for a reaction vessel, comprising a vessel body and a vessel cover, wherein a furnace liner is provided inside the vessel body, and a combustion mechanism is provided at the bottom of the vessel body. The combustion mechanism is located outside the furnace liner, and the combustion mechanism includes a burner, an annular oxygen supply pipe, an oxygen supply box, and an air supply pipe. The oxygen supply box is fixed to the bottom of the vessel body, and a burner is arranged on its top. A first oxygen inlet pipe is provided on the bottom surface, and the first oxygen inlet pipe extends to the outside of the vessel body and is connected to a first blower. The first blower supplies air to the oxygen supply box, and multiple air outlets are provided on the top of the oxygen supply box.

[0006] The annular oxygen supply pipe is arranged around the oxygen supply box, and several air outlets are distributed on the annular oxygen supply pipe. A second oxygen inlet pipe is provided at one end of the annular oxygen supply pipe, and the other end of the second oxygen inlet pipe extends through to the outside of the vessel body and is connected to a second blower. One end of the gas delivery pipe is located inside the vessel body, and the other end of the gas delivery pipe extends out of the outside of the vessel body and is connected to the vessel cover. Thus, the combustible gas generated by the thermal decomposition of the furnace lining is processed and transported into the vessel body through the gas delivery pipe for recycling and combustion.

[0007] Furthermore, the gas supply pipe is provided with arc-shaped pipes on both sides of one end inside the vessel, the arc-shaped pipes being located between the burner and the oxygen supply pipe, and the arc-shaped pipes having a number of gas delivery holes distributed on them.

[0008] Furthermore, the annular oxygen supply pipe has two types of air outlets on its pipe wall. The first type of air outlet is horizontally opened on the inner side wall of the oxygen supply pipe and is used to deliver a horizontal oxygen flow to the bottom of the furnace. The second type of air outlet penetrates the top wall of the oxygen supply pipe at a preset angle, and the angle is directed towards the furnace axis.

[0009] Furthermore, the burner is a high-powered stove, which is connected to an input pipe for supplying natural gas. An opening is provided at the bottom center of the vessel body, and a lifter is provided below the vessel body. The oxygen supply box is installed on the top of the lifter, and the lifter moves the oxygen supply box up and down at the opening.

[0010] Furthermore, both the first and second blowers are integrated with frequency converters to precisely control the oxygen supply volume.

[0011] Furthermore, the specific structure of the lifting device can be found in another document filed by the applicant on the same day.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This innovative design, through a clever combination of a ring-shaped oxygen supply pipe and two types of gas outlets, solves the problem of uneven oxygen distribution caused by traditional single bottom oxygen supply, achieving uniform oxygen supply in 360° direction. This significantly improves the mixing efficiency of oxygen and combustible gas, ensuring a complete and stable combustion process. Simultaneously, the gas supply pipe, in conjunction with the arc-shaped pipe, recovers and reuses the combustible gas generated from the thermal decomposition of bamboo, effectively reducing dependence on external fuels and saving energy costs. The lifting and adjusting mechanism protects the burner from high-temperature damage, extending equipment lifespan. Overall, this design optimizes the bamboo carbonization process, improves production efficiency and product quality, while reducing environmental pollution, demonstrating significant economic and environmental advantages. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the reaction vessel structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the oxygen supply structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the annular oxygen supply pipe structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the oxygen supply box structure of this utility model.

[0018] In the diagram, the components are: vessel body-1, vessel lid-2, burner-3, annular oxygen supply pipe-4, oxygen supply box-5, gas delivery pipe-6, first oxygen inlet pipe-7, gas outlet-8, gas outlet-9, second oxygen inlet pipe-10, second blower-11, arc-shaped pipe-12, gas delivery hole-13, lifting device-14, first blower-15, and through-hole-16. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 4 As shown, an oxygen supply structure for a reactor includes a reactor body 1 and a reactor cover 2. A furnace liner is provided inside the reactor body 1, and a combustion mechanism is provided at the bottom of the reactor body 1. The combustion mechanism is located outside the furnace liner. The combustion mechanism includes a burner 3, an annular oxygen supply pipe 4, an oxygen supply box 5, and an air supply pipe 6. The oxygen supply box 5 is fixed to the bottom of the reactor body 1, and the burner 3 is arranged on its top. A first oxygen inlet pipe 7 is provided on the bottom surface. The first oxygen inlet pipe 7 extends to the outside of the reactor body 1 and is connected to a first blower 15. The first blower 15 supplies air to the oxygen supply box 5. The top of the oxygen supply box 5 has multiple air outlets 8.

[0021] An annular oxygen supply pipe 4 surrounds the oxygen supply box 5. Several air outlets 9 are distributed on the annular oxygen supply pipe 4. A second oxygen inlet pipe 10 is provided at one end of the annular oxygen supply pipe 4. The other end of the second oxygen inlet pipe 10 extends through to the outside of the vessel body 1 and is connected to a second blower 11. One end of the gas supply pipe 6 is located inside the vessel body 1, and the other end of the gas supply pipe 6 extends out of the outside of the vessel body 1. The outer end of the gas supply pipe 6 is connected to the vessel cover 2. Thus, the combustible gas generated by the thermal decomposition of bamboo is processed and transported into the vessel body 1 through the gas supply pipe 6 for recycling and combustion. The first blower 15 and the second blower 11 are both integrated with frequency conversion speed control devices to precisely control the oxygen supply air volume.

[0022] In this embodiment, the gas supply pipe 6 is provided with arc-shaped pipes 12 on both sides of one end inside the vessel body 1. The arc-shaped pipes 12 are located between the burner 3 and the oxygen supply pipe, and a number of gas supply holes 13 are distributed on the arc-shaped pipes 12.

[0023] In this embodiment, the annular oxygen supply pipe 4 has two types of outlets 9 on its wall. The first type of outlet 9 is horizontally located on the inner wall of the oxygen supply pipe, delivering a horizontal oxygen flow to the bottom of the furnace. This helps to form a stable oxygen layer around the furnace and prevents uneven flame diffusion. The second type of outlet 9 penetrates the top wall of the oxygen supply pipe at a preset angle (pointing towards the furnace axis), spraying oxygen upwards at an angle. The two types of outlets 9 are staggered, creating a swirling effect, enhancing the mixing of oxygen and combustible gas, and ensuring sufficient oxygen in the central area of ​​the furnace.

[0024] In this embodiment, the burner 3 is a high-power stove with an input pipe connected to it for supplying natural gas. A port 16 is provided in the middle of the bottom of the vessel body 1. A lifter 14 is provided below the vessel body 1. An oxygen supply box 5 is installed on the top of the lifter 14. The lifter 14 moves the oxygen supply box 5 up and down at the port 16. Because the combustion temperature of combustible gas reaches 800-1000℃ (higher than the natural gas flame), the lifter 14 moves the oxygen supply box 5 down to the minimum, so that the burner 3 is removed from the high-temperature core area to avoid burn-out and deformation.

[0025] The working principle of this embodiment is as follows:

[0026] Initial combustion stage: The first blower 15 supplies air to the oxygen supply box 5, and the air is vertically ejected from the top air outlet 8, supporting the combustion of natural gas in the high-powered stove, forming a high-temperature flame that surrounds the bottom of the furnace. At this time, the lifter 14 raises the oxygen supply box 5, so that the burner 3 is close to the furnace, accelerating the heating of the bamboo to the pyrolysis initiation temperature (200-300℃). The heat radiation of the flame initiates the drying and initial pyrolysis of the bamboo, and volatile gases begin to be generated.

[0027] The combustible gas (containing tar, etc.) generated by the continuous pyrolysis of bamboo is cooled to remove the tar and bamboo vinegar. It is then transported to the arc-shaped pipe 12 at the bottom of the pot through the gas supply pipe 6 and evenly released through the gas outlet 13 of the arc-shaped pipe 12. After the combustible gas is ignited by the high-power stove, the natural gas supply is immediately shut off. At this time, the first blower 15 is shut off and the second blower 11 is started. The second blower 11 continuously supplies oxygen. Since the outlet 9 of the annular oxygen supply pipe 4 is evenly distributed along the circumference, it ensures that oxygen is evenly injected into the combustion zone from a 360° direction. This avoids the local oxygen deficiency or flame deviation caused by traditional single-sided oxygen supply, ensures that the combustible gas is fully burned, prevents the bamboo charcoal from being incompletely carbonized in some areas, and improves production efficiency while reducing production costs.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oxygen supply structure for a reaction vessel, comprising a vessel body and a vessel lid, characterized in that: The vessel body is equipped with a furnace liner, and a combustion mechanism is provided at the bottom of the vessel body. The combustion mechanism is located outside the furnace liner and includes a burner, an annular oxygen supply pipe, an oxygen supply box, and an air supply pipe. The oxygen supply box is fixed to the bottom of the vessel body, and a burner is arranged on its top. A first oxygen inlet pipe is provided on the bottom surface. The first oxygen inlet pipe extends to the outside of the vessel body and is connected to a first blower. The first blower supplies air into the oxygen supply box. The top of the oxygen supply box has multiple air outlets. The annular oxygen supply pipe surrounds the oxygen supply box and has several air outlets. One end of the annular oxygen supply pipe is provided with a second oxygen inlet pipe, and the other end of the second oxygen inlet pipe extends through to the outside of the vessel body and is connected to a second blower. One end of the gas delivery pipe is located inside the vessel body, and the other end of the gas delivery pipe extends out of the vessel body and is connected to the vessel lid. Thus, the combustible gas generated by the thermal decomposition of bamboo can be processed and transported into the vessel body through the gas delivery pipe for recycling and combustion.

2. The oxygen supply structure for a reaction vessel according to claim 1, characterized in that: The gas supply pipe is located inside the vessel body and has arc-shaped pipes on both sides. The arc-shaped pipes are located between the burner and the oxygen supply pipe, and several gas delivery holes are distributed on the arc-shaped pipes.

3. The oxygen supply structure for a reaction vessel according to claim 1, characterized in that: The annular oxygen supply pipe has two types of gas outlets on its pipe wall. The first type of gas outlet is horizontally opened on the inner side wall of the oxygen supply pipe and is used to deliver a horizontal oxygen flow to the bottom of the furnace. The second type of gas outlet penetrates the top wall of the oxygen supply pipe at a preset angle, with the angle pointing towards the furnace axis. The first type of gas outlet and the second type of gas outlet are distributed alternately.

4. The oxygen supply structure for a reaction vessel according to claim 1, characterized in that: The burner is a high-powered stove, which is connected to an input pipe for supplying natural gas. An opening is provided at the bottom center of the vessel body, and a lifter is provided below the vessel body. The oxygen supply box is installed on the top of the lifter, and the lifter moves the oxygen supply box up and down at the opening.

5. The oxygen supply structure for a reaction vessel according to claim 1, characterized in that: Both the first and second blowers are equipped with variable frequency speed control devices to precisely regulate the oxygen supply air volume.

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