Fluidized bed reactor of biomass cracking machine

Abstract

The utility model relates to the technical field of fluidized bed reactors, and discloses a fluidized bed reactor of a biomass cracking machine, which comprises a tank body, a first conveying cavity and a second conveying cavity are respectively arranged in the tank body, and the first conveying cavity and the second conveying cavity are used for sufficient contact between gas and a catalyst to provide a chamber place; the cavity conical shell is arranged in the first conveying cavity, and the cavity conical shell is used for temporarily storing and collecting the catalyst; when gas passes through the breather pipe, the cavity conical shell, the hollow rod cylinder and the cavity spiral blade, the gas is blown to a first conveying cavity and a second conveying cavity of the tank body through gaps between a plurality of air outlet pipes and air caps on the top surfaces of the cavity conical shell and the cavity spiral blade, so that a catalyst on a conical groove in the top of the cavity conical shell and the top surface of the cavity spiral blade can be blown up; meanwhile, the motor drives the hollow rod barrel and the cavity spiral blade to rotate, upward conveying of the catalyst and the gas is achieved, and the sufficient contact reaction of the gas and the catalyst can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluidized bed reactor technical field especially relates to biomass pyrolysis machine fluidized bed reactor. BACKGROUND

[0002] Biomass pyrolysis usually refers to the process that biomass is heated to cause molecular decomposition to produce coke, condensable liquid and gas products in the oxygen-free or low-oxygen environment, which is an important utilization form of biomass energy; Fluidized bed reactor refers to the equipment that gas carries out chemical reaction in the boiling bed layer composed of solid materials or catalysts.

[0003] The prior art high-efficiency biomass pyrolysis fluidized bed reactor (its authorized announcement number is CN119144351A) disperses the catalyst on the multiple material receiving plates through the cooperation of the flow adjusting mechanism, the material receiving plate and the air cylinder, avoids the phenomenon that the catalyst is difficult to blow due to the excessive thickness of the catalyst stacking, and further causes the problem that the gas and the catalyst do not contact sufficiently, in addition, the flow adjusting mechanism can adjust the size of the wind speed and the air volume, so that the catalyst can be fully reacted according to the actual demand.

[0004] However, since the opening of the annular groove at the top of the annular cylinder is fixedly arranged, the direction angle of the upward blowing air is fixedly arranged, the wind speed of the peripheral area of the material receiving plate far away from the upward blowing air is small, and the catalyst in the peripheral area at the top of the material receiving plate is not uniformly and completely contacted and reacted with the gas; therefore, the biomass pyrolysis machine fluidized bed reactor is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a biomass pyrolysis machine fluidized bed reactor for solving the above problems. It comprises:

[0006] The tank body is provided with a first conveying cavity and a second conveying cavity, which are used to provide a chamber place for the sufficient contact of the gas and the catalyst;

[0007] The cavity cone shell is arranged in the first conveying cavity and is used to temporarily store and collect the catalyst;

[0008] The spiral conveying assembly is arranged in the second conveying cavity and is used to upwardly convey the mixed contact reaction of the catalyst and the gas;

[0009] The gas outlet assembly is used to blow the catalyst, so that the catalyst and the gas can be fully mixed and contacted in the first conveying cavity and the second conveying cavity of the tank body.

[0010] Preferably, the top inner wall of the second conveying cavity in the tank body is fixedly provided with two baffles respectively, a plurality of circumferentially distributed sector-shaped openings are formed in the two baffles, the sector-shaped openings in the two baffles are arranged in a staggered manner, and the top side of the upper baffle is fixedly provided with a mounting shell.

[0011] Preferably, the spiral conveying assembly comprises:

[0012] a motor fixedly mounted in the mounting shell;

[0013] a hollow rod cylinder, one end of the hollow rod cylinder is fixedly mounted on the output shaft of the motor, and the other end of the hollow rod cylinder is rotatably mounted in the cavity cone shell;

[0014] a cavity spiral blade fixedly mounted on the hollow rod cylinder and communicating with the hollow rod cylinder, and the outer side of the cavity spiral blade is rotatably attached to the inner wall of the second conveying cavity of the tank body.

[0015] Preferably, the air outlet assembly comprises:

[0016] a plurality of air outlet pipes arranged on the top surface of the cavity cone shell and the cavity spiral blade;

[0017] a plurality of connecting blocks fixedly mounted on the outer side of the air outlet pipe;

[0018] a same air cap fixedly mounted on the connecting blocks of the air outlet pipe.

[0019] Preferably, the cavity cone shell is in a conical structure, and a bearing is arranged between the hollow rod cylinder and the cavity cone shell.

[0020] Preferably, the tank body is provided with a ventilation pipe communicating with the cavity cone shell.

[0021] Preferably, the outer side wall of the tank body is provided with a plurality of feeding pipes communicating with the first conveying cavity of the tank body, the top of the tank body is provided with an air outlet opening communicating with the second conveying cavity of the tank body.

[0022] The utility model discloses: through being provided with cavity cone shell, spiral conveying assembly and air outlet assembly in the tank body, when gas is through ventilation pipe, cavity cone shell, hollow rod cylinder and cavity spiral blade, gas is blown to the first conveying cavity and the second conveying cavity of the tank body through the gap between the plurality of air outlet pipes on the top surface of cavity cone shell and cavity spiral blade and air cap, can realize the catalyst on the top conical groove of cavity cone shell and the top surface of cavity spiral blade and is blown up, simultaneously, the hollow rod cylinder and cavity spiral blade are driven to rotate by motor, realize the upward conveying of catalyst and gas, can improve the full contact reaction of gas and catalyst. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure schematic view of the three-dimensional partial section of the utility model;

[0024] Figure 2 It is the structure schematic view of the utility model Figure 1 A part of the structure schematic view of the utility model;

[0025] Figure 3 It is the structure schematic view of the plane section of the utility model;

[0026] Figure 4 It is the structure schematic view of the partial section of the utility model of the explosion angle.

[0027] In the figure: 1, tank body;101, first conveying cavity;102, second conveying cavity;2, cavity conical shell;3, motor;4, hollow rod cylinder;5, cavity spiral blade;6, air outlet pipe;7, connecting block;8, air cap;9, baffle;10, fan-shaped opening;11, installation shell;12, bearing;13, air pipe;14, feed pipe;15, air outlet. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] As Figure 4 shown, the biomass pyrolysis machine fluidized bed reactor comprises a tank body 1, a cavity conical shell 2, a spiral conveying assembly and an air outlet assembly;

[0030] As Figure 4 shown, the first conveying cavity 101 and the second conveying cavity 102 are respectively arranged in the tank body 1, the first conveying cavity 101 and the second conveying cavity 102 are both used for the contact of gas and catalyst to provide a cavity place, the second conveying cavity 102 is located at the upper position of the first conveying cavity 101, the top end of the second conveying cavity 102 is provided with an air outlet 15, the air outlet 15 is used for the discharge of gas;A plurality of feed pipes 14 are arranged on the tank body 1 and located above the first conveying cavity 101, catalyst can enter the first conveying cavity 101 through the plurality of feed pipes 14 to contact and react with gas.

[0031] As Figure 4As shown, the cavity cone shell 2 is arranged in the first conveying cavity 101, the cavity cone shell 2 is arranged in a conical structure, the cavity cone shell 2 is a groove structure with a middle recess, the groove structure is used for temporarily storing and collecting the catalyst dropped by the feeding pipe 14, the tank body 1 is provided with a breather pipe 13, the cavity cone shell 2 has a cavity, the breather pipe 13 is communicated with the cavity of the cavity cone shell 2, and the breather pipe 13 is convenient for the gas to enter the cavity of the cavity cone shell 2.

[0032] As shown in the figure, Figure 4 The top inner wall of the second conveying cavity 102 is fixedly provided with two baffles 9, a plurality of circumferentially distributed sector-shaped openings 10 are formed in the two baffles 9, the sector-shaped openings 10 are provided with filter screens, the sector-shaped openings 10 on the two baffles 9 are arranged in a staggered manner, the two baffles 9 in the tank body 1 can facilitate the airflow to pass through while avoiding the catalyst from being discharged with the airflow, and the baffle 9 close to the air outlet 15 is fixedly provided with a mounting shell 11 on the top side.

[0033] As shown in the figure, Figure 4 The spiral conveying assembly comprises a motor 3, a hollow rod cylinder 4 and a cavity spiral blade 5; the motor 3 is mounted in the mounting shell 11, one end of the motor 3 is provided with the hollow rod cylinder 4, the other end of the hollow rod cylinder 4 is rotatably extended and mounted in the cavity body mounting portion of the cavity cone shell 2 through a bearing 12, the hollow rod cylinder 4 is fixedly provided with the cavity spiral blade 5, the cavity spiral blade 5 has a spiral cavity, the hollow rod cylinder 4 extends into the cavity of the cavity cone shell 2 and is communicated with the cavity of the cavity cone shell 2, the cavity of the cavity cone shell 2, the hollow rod cylinder 4 and the spiral cavity of the cavity spiral blade 5 are communicated, the gas can flow between the cavity of the cavity cone shell 2, the hollow rod cylinder 4 and the cavity spiral blade 5, and the outer contact surface of the cavity spiral blade 5 is rotatably attached to the inner wall of the second conveying cavity 102; when the motor 3 is running, the hollow rod cylinder 4 drives the cavity spiral blade 5 to rotate, the catalyst and the gas in the first conveying cavity 101 can be spirally upward conveyed in the second conveying cavity 102, and the catalyst is prevented from gathering on the inner wall.

[0034] As shown in the figure, Figure 4 The air outlet assembly comprises an air outlet pipe 6, a plurality of connecting blocks 7 and a wind cap 8; the top surfaces of the cavity cone shell 2 and the cavity spiral blade 5 are provided with a plurality of air outlet pipes 6, the outer sides of the air outlet pipes 6 are fixedly provided with a plurality of connecting blocks 7, and the connecting blocks 7 of the air outlet pipes 6 are fixedly provided with the same wind cap 8, so that the gas can be blown to the first conveying cavity 101 and the second conveying cavity 102 through the gaps (there will be gaps between the two connecting blocks 7) between the air outlet pipes 6 and the wind cap 8 on the top surfaces of the cavity cone shell 2 and the cavity spiral blade 5, the airflow output by the air outlet pipe 6 is directly blown downward to the top conical groove of the cavity cone shell 2 and the top surface of the cavity spiral blade 5 through the blockage of the wind cap 8, the airflow can be dispersed at the same time, and the catalyst on the top conical groove of the cavity cone shell 2 and the top surface of the cavity spiral blade 5 can be blown up.

[0035] The application can realize blowing up the catalyst on the top conical groove of the cavity conical shell 2 and the top surface of the cavity spiral blade 5 by setting the cavity conical shell 2, the spiral conveying assembly and the air outlet assembly in the tank body 1, when the gas passes through the air pipe 13, the cavity conical shell 2, the hollow rod cylinder 4 and the cavity spiral blade 5, the gas is blown to the first conveying cavity 101 and the second conveying cavity 102 of the tank body 1 through the gaps between the multiple air outlet pipes 6 and the air caps 8 on the top surface of the cavity conical shell 2 and the cavity spiral blade 5, the catalyst on the top conical groove of the cavity conical shell 2 and the top surface of the cavity spiral blade 5 can be blown up, at the same time, the motor 3 drives the hollow rod cylinder 4 and the cavity spiral blade 5 to rotate, the upward conveying of the catalyst and the gas is realized, and the full contact reaction between the gas and the catalyst can be further improved.

[0036] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A fluidized bed reactor for a biomass pyrolysis machine, characterized in that, Include: The tank body (1), the first conveying cavity (101) and the second conveying cavity (102) are respectively arranged in the tank body (1), and the first conveying cavity (101) and the second conveying cavity (102) are used for gas and catalyst contact to provide a chamber site; The cavity cone shell (2) is arranged in the first conveying cavity (101), and the cavity cone shell (2) is used for temporary storage of catalyst; The spiral conveying assembly is arranged in the second conveying cavity (102), and the spiral conveying assembly is used for upward conveying of catalyst and gas mixed contact reaction; The air outlet assembly is used for blowing the catalyst, so that the catalyst and the gas can be fully mixed and contacted in the first conveying cavity (101) and the second conveying cavity (102) of the tank body (1).

2. The fluidized bed reactor of the biomass pyrolysis machine according to claim 1, characterized in that, The top inner wall of the second conveying cavity (102) in the tank body (1) is fixedly installed with two baffles (9), a plurality of circumferentially distributed sector openings (10) are arranged on the two baffles (9), the plurality of sector openings (10) on the two baffles (9) are arranged in a staggered manner, and the top side of the upper baffle (9) is fixedly installed with a mounting shell (11).

3. The fluidized bed reactor of claim 2, wherein, The spiral conveying assembly comprises: The motor (3) is fixedly installed in the mounting shell (11); One end of the hollow rod cylinder (4) is fixedly installed on the output shaft of the motor (3), and the other end of the hollow rod cylinder (4) is rotatably installed in the cavity cone shell (2); The cavity spiral blade (5) is fixedly installed on the hollow rod cylinder (4) and communicates with the hollow rod cylinder (4), and the outer side of the cavity spiral blade (5) is rotatably attached to the inner wall of the second conveying cavity (102) of the tank body (1).

4. The fluidized bed reactor of claim 3, wherein, The air outlet assembly comprises: A plurality of air outlet pipes (6) are arranged on the top surface of the cavity cone shell (2) and the cavity spiral blade (5); A plurality of connecting blocks (7) are fixedly installed on the outer side of the air outlet pipe (6); One air cap (8) is fixedly installed on the plurality of connecting blocks (7) of the air outlet pipe (6).

5. The fluidized bed reactor of claim 3, wherein, The cavity cone shell (2) is arranged in a conical structure, and bearings (12) are arranged between the hollow rod cylinder (4) and the cavity cone shell (2).

6. The fluidized bed reactor of the biomass pyrolysis machine according to claim 1, wherein, The tank body (1) is provided with a ventilation pipe (13) which communicates with the cavity cone shell (2).

7. The fluidized bed reactor of claim 1, wherein, The outer side wall of the tank body (1) is provided with a plurality of feeding pipes (14), the plurality of feeding pipes (14) communicate with the first conveying cavity (101) of the tank body (1), and the top of the tank body (1) is provided with an air outlet (15), the air outlet (15) communicates with the second conveying cavity (102) of the tank body (1).

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