Oxygen content control device for microwave cracking furnace

Abstract

The utility model discloses an oxygen content control device for a microwave cracking furnace, particularly relates to the technical field of microwave cracking furnaces, and comprises a microwave cracking furnace body, one side of the microwave cracking furnace body is fixedly communicated with an oxygen inlet pipe, the top of the microwave cracking furnace body is provided with a nitrogen release mechanism, and an oxygen control mechanism is arranged in the oxygen inlet pipe; the nitrogen release mechanism comprises a nitrogen tank which is installed on the top of the microwave cracking furnace body. According to the utility model, the nitrogen release mechanism and the oxygen control mechanism are arranged, the oxygen content is accurately controlled, and uniform injection and flow of nitrogen are beneficial to uniform transfer of heat, so that the temperature in the furnace is more uniform, and the safety problem caused by oxygen fluctuation is avoided; according to the method, the situation that due to excessive oxygen, materials are excessively oxidized, and the quality and the yield of cracking products are affected can be avoided, the situation that due to too little oxygen, the cracking reaction is affected can be prevented, and in the biomass cracking process, biochar, biogas and bio-oil products with higher quality can be obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of microwave cracking furnace, more specifically, the utility model relates to a kind of oxygen content control device for microwave cracking furnace. BACKGROUND

[0002] With the improvement of environmental awareness and the growth of resource recycling demand, microwave cracking technology has been widely concerned and applied in recent years. As a key equipment to realize this technology, microwave cracking furnace can convert various organic waste, biomass and other materials into valuable products such as biochar, biogas and bio-oil.

[0003] According to the search, the Chinese patent with publication number CN220926674U discloses a high-efficiency heating biomass microwave cracking furnace. The feeding bin adopts a fixed structure design, and the valve is used to control the entry of raw materials. When the amount of raw materials in the feeding bin is too much, the raw materials will be blocked after the valve is opened. At this time, the operator needs to dredge. Because the raw materials are pre-placed in the feeding bin, part of the raw materials will adhere to the inner wall of the feeding bin, which will affect the feeding speed. Through the rotation of the rotating rod, the top end of the pushing rod will generate a pushing force on the horizontal rod, which will move the horizontal rod with the vertical rod and the anti-blocking plate upward along the inner surface of the feeding bin, thereby preventing the raw materials from being blocked in the feeding bin and reducing the adhesion of the raw materials on the inner wall of the feeding bin.

[0004] The microwave cracking furnace lacks precise oxygen content monitoring means, and cannot accurately understand the change of oxygen content in the furnace in real time. In the cracking process, it is difficult to determine when to adjust the oxygen content, which may lead to excessive or insufficient oxygen content, affecting the cracking effect and safety. At the same time, the internal oxygen content fluctuation of some microwave cracking furnaces may cause side reactions and generate impurities, affecting the quality of the products. UTILITY MODEL CONTENT

[0005] In order to overcome the problems and defects in the prior art, the utility model provides an oxygen content control device for microwave cracking furnace to solve the problems in the background art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an oxygen content control device for microwave cracking furnace, comprising a microwave cracking furnace body, an oxygen inlet pipe is fixedly connected to one side of the microwave cracking furnace body, a nitrogen release mechanism is arranged on the top of the microwave cracking furnace body, and an oxygen control mechanism is arranged inside the oxygen inlet pipe.

[0007] The nitrogen release mechanism comprises a nitrogen tank, a nitrogen supplement pipe is fixedly connected to one side of the nitrogen tank, a nitrogen supplement pipe is fixedly installed between the nitrogen tank and the microwave cracking furnace body, a connecting pipe is fixedly connected to one side of the nitrogen tank, an air extraction pump is fixedly installed at the bottom end of the connecting pipe, a fixed pipe is fixedly connected to the bottom of the air extraction pump, an annular pipe is fixedly connected to the bottom of the fixed pipe, a jet head is fixedly installed on the inner side of the annular pipe, and a first valve is fixedly installed in the fixed pipe.

[0008] One side of the microwave cracking furnace body is fixedly connected with an exhaust pipe, a second valve is fixedly installed in the exhaust pipe, and an oxygen content sensor is fixedly installed on the top inner wall of the microwave cracking furnace body.

[0009] Preferably, the oxygen control mechanism comprises a fixed shell, the fixed shell is fixed on the top of the oxygen inlet pipe, and a motor is fixedly installed on the top of the fixed shell.

[0010] Preferably, the motor output end is fixedly connected with a first gear, and a second gear is engaged on one side of the first gear.

[0011] Preferably, the second gear is fixedly connected with a rotating shaft inside, and the rotating shaft is rotatably connected with the oxygen inlet pipe.

[0012] Preferably, rotating baffles are fixedly connected to the two sides of the rotating shaft, and the rotating baffles are arranged in a semicircular shape in cross section.

[0013] Preferably, the fixed pipe penetrates through the microwave cracking furnace body and extends into the microwave cracking furnace body, and an electromagnetic valve is fixedly installed in the nitrogen supplement pipe.

[0014] Preferably, the number of jet heads is set to be multiple, and the multiple jet heads are uniformly distributed on the inner side of the annular pipe.

[0015] The technical effects and advantages of the utility model are as follows:

[0016] By setting the nitrogen release mechanism and oxygen control mechanism, by monitoring the oxygen content in the furnace in real time and starting the nitrogen release mechanism and adjusting the oxygen entering amount in time, the oxygen content can be strictly controlled within the safe range, the risk of fire, explosion and other safety accidents caused by too high oxygen content can be effectively reduced, when treating flammable and explosive organic waste, accurate control of oxygen content can ensure the safe operation of the microwave cracking furnace, through accurate control of oxygen content, uniform spraying and flow of nitrogen can help uniform heat transfer, the temperature in the furnace is more uniform, the safety problem caused by oxygen fluctuation can be avoided, the excessive oxidation of materials caused by too much oxygen can be avoided, the quality and yield of the cracking products are affected, at the same time, the cracking reaction can be affected by too little oxygen, in the biomass cracking process, higher quality biochar, biogas and bio-oil products can be obtained.

[0017] By nitrogen release in the microwave cracking furnace body, an inert protective film can be formed on the surface of the equipment, the contact between oxygen and metal parts is reduced, thereby the corrosion rate of the equipment is reduced, and the service life of the equipment is prolonged. For the long-term operation of the microwave cracking furnace, the equipment maintenance cost and downtime can be reduced, the stable reaction environment in the furnace can be effectively maintained, the side reaction caused by the fluctuation of oxygen content is reduced, the purity and stability of the cracking product are further improved, and the difficulty of product separation and purification is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure schematic view of the utility model.

[0019] Figure 2 It is a nitrogen tank and annular pipe connecting structure schematic view of the utility model.

[0020] Figure 3 It is a rear view structure schematic view of the utility model.

[0021] Figure 4 It is a front face partial sectional view structure schematic view of the utility model.

[0022] Figure 5 It is a partial side sectional view structure schematic view of the utility model.

[0023] The figure mark is: 1, microwave cracking furnace body;2, oxygen inlet pipe;3, nitrogen tank;4, nitrogen supplement pipe;5, support column;6, connecting pipe;7, air pump;8, fixed pipe;9, annular pipe;10, air injection head;11, first valve;12, exhaust pipe;13, second valve;14, oxygen content sensor;15, fixed shell;16, motor;17, first gear;18, second gear;19, rotating shaft;20, rotating baffle;21, electromagnetic valve. DETAILED DESCRIPTION

[0024] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0025] As shown in the accompanying Figures 1-5 The oxygen content control device for the microwave cracking furnace, including microwave cracking furnace body 1, microwave cracking furnace body 1 one side fixed communication has oxygen inlet pipe 2, microwave cracking furnace body 1 top is provided with nitrogen release mechanism, oxygen inlet pipe 2 inside is provided with oxygen control mechanism;

[0026] Nitrogen release mechanism includes nitrogen tank 3, nitrogen tank 3 is installed at the top of microwave cracking furnace body 1, nitrogen tank 3 one side fixed communication has nitrogen supplement pipe 4, nitrogen tank 3 and microwave cracking furnace body 1 between fixed installation has nitrogen supplement pipe 4, nitrogen tank 3 one side fixed communication has connecting pipe 6, connecting pipe 6 bottom fixed installation has air pump 7, air pump 7 bottom fixed connection has fixed pipe 8, fixed pipe 8 bottom fixed communication has annular pipe 9, annular pipe 9 inside fixed installation has jet head 10, fixed pipe 8 inside fixed installation has first valve 11;

[0027] Microwave cracking furnace body 1 one side fixed communication has exhaust pipe 12, exhaust pipe 12 inside fixed installation has second valve 13, microwave cracking furnace body 1 inner wall top fixed installation has oxygen content sensor 14.

[0028] As shown in the accompanying Figure 1 、 3 、4, 5, oxygen control mechanism includes fixed shell 15, fixed shell 15 is fixed at the top of oxygen inlet pipe 2, fixed shell 15 top fixed installation has motor 16, motor 16 output fixed connection has first gear 17, first gear 17 one side has second gear 18, second gear 18 inside fixed connection has rotating shaft 19, rotating shaft 19 and oxygen inlet pipe 2 between rotation connection, rotating shaft 19 both sides are fixedly connected with rotating baffle 20, rotating baffle 20 cross section shape is set as semicircle, it is convenient for adjusting the oxygen flow speed, avoid the safety problem caused by too fast flow rate instantaneous entering too much oxygen.

[0029] As shown in the accompanying Figure 4 Fixed pipe 8 bottom penetrates microwave cracking furnace body 1 and extends to the inside of microwave cracking furnace body 1, electromagnetic valve 21 is fixedly installed in the inside of nitrogen supplement pipe 4, to prevent nitrogen overflow in the inside of nitrogen tank 3.

[0030] As shown in the accompanying Figure 2 、 4As shown, the number of the jet heads 10 is set to be multiple, and the multiple jet heads 10 are uniformly distributed on the inside of the annular pipe 9, so that the nitrogen can be uniformly sprayed and flowed, and the temperature in the furnace is more uniform, and meanwhile the danger caused by the oxygen content fluctuation is avoided.

[0031] The utility model works: the utility model in the process of using, when oxygen content sensor 14 detects that the oxygen content in the microwave cracking furnace body 1 is too high, start nitrogen release mechanism, the air pump 7 starts working, through the connecting pipe 6 from nitrogen tank 3 extracts nitrogen, nitrogen passes through air pump 7, fixed pipe 8 in turn enters annular pipe 9, and multiple jet heads 10 on the inside of annular pipe 9 spray nitrogen into the microwave cracking furnace body 1 evenly, so as to reduce the oxygen content in the furnace, the first valve 11 can control the flow of nitrogen in fixed pipe 8, and the oxygen content in the microwave cracking furnace body 1 is monitored in real time through oxygen content sensor 14, when the oxygen content is too high, start nitrogen release mechanism to release nitrogen to reduce the oxygen content, simultaneously, oxygen control mechanism can adjust the oxygen entering amount according to the need, to realize the accurate control to the oxygen content in the microwave cracking furnace, electromagnetic valve 21 can control the flow of nitrogen in nitrogen supplement pipe 4, and the second valve 13 can control the exhaust of exhaust pipe 12, further cooperate to adjust the oxygen content and pressure parameters in the furnace,

[0032] When the oxygen entering amount needs to be controlled, motor 16 is started, the first gear 17 is driven to rotate by the output end of motor 16, the first gear 17 is engaged with the second gear 18, the second gear 18 drives the rotating shaft 19 to rotate in the oxygen inlet pipe 2, and the semicircular rotating baffle 20 on the both sides of the rotating shaft 19 rotates, the opening size of the oxygen inlet pipe 2 is controlled by adjusting the angle of the rotating baffle 20, so as to control the oxygen entering amount.

[0033] Finally: the above-mentioned embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A microwave pyrolysis furnace oxygen content control device comprising a microwave pyrolysis furnace body (1), characterized in that: The microwave cracking furnace body (1) is fixedly connected with an oxygen inlet pipe (2) on one side, the microwave cracking furnace body (1) is provided with a nitrogen release mechanism on the top, and the oxygen inlet pipe (2) is provided with an oxygen control mechanism inside. The nitrogen release mechanism comprises a nitrogen tank (3) installed on the top of the microwave cracking furnace body (1), a nitrogen supplement pipe (4) fixedly connected with the nitrogen tank (3) on one side, a nitrogen supplement pipe (4) fixedly installed between the nitrogen tank (3) and the microwave cracking furnace body (1), a connecting pipe (6) fixedly connected with the nitrogen tank (3) on one side, an air pump (7) fixedly installed at the bottom end of the connecting pipe (6), a fixed pipe (8) fixedly connected with the air pump (7) at the bottom, an annular pipe (9) fixedly connected with the fixed pipe (8) at the bottom, a jet head (10) fixedly installed inside the annular pipe (9), and a first valve (11) fixedly installed inside the fixed pipe (8). The microwave cracking furnace body (1) is fixedly connected with an exhaust pipe (12) on one side, the exhaust pipe (12) is fixedly installed with a second valve (13) inside, and an oxygen content sensor (14) is fixedly installed on the top inner wall of the microwave cracking furnace body (1).

2. The oxygen content control device for a microwave pyrolysis furnace according to claim 1, characterized by: The oxygen control mechanism comprises a fixed shell (15) fixed on the top of the oxygen inlet pipe (2), and a motor (16) fixedly installed on the top of the fixed shell (15).

3. The oxygen content control device for a microwave pyrolysis furnace according to claim 2, characterized by: The output end of the motor (16) is fixedly connected with a first gear (17), and the first gear (17) is engaged with a second gear (18) on one side.

4. The oxygen content control device for a microwave pyrolysis furnace according to claim 3, characterized by: The second gear (18) is fixedly connected with a rotating shaft (19) inside, and the rotating shaft (19) is rotatably connected with the oxygen inlet pipe (2).

5. The oxygen content control device for a microwave pyrolysis furnace according to claim 4, characterized by: Rotary baffles (20) are fixedly connected with the rotating shaft (19) on both sides, and the rotary baffles (20) are provided in a semicircular shape in cross section.

6. The oxygen content control device for a microwave pyrolysis furnace according to claim 1, characterized by: The bottom of the fixed pipe (8) penetrates through the microwave cracking furnace body (1) and extends into the microwave cracking furnace body (1), and an electromagnetic valve (21) is fixedly installed inside the nitrogen supplement pipe (4).

7. The oxygen content control device for a microwave pyrolysis furnace according to claim 1, characterized by: The number of the jet heads (10) is set to be multiple, and the multiple jet heads (10) are uniformly distributed inside the annular pipe (9).

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