A kind of chemical slag pyrolysis reactor with anti-coking function

Abstract

The present invention discloses a chemical slag pyrolysis reactor with anti-coking, and relates to the technical field of pyrolysis reactors. The problem that chemical slag pyrolysis reactors are prone to coking and sticking to the wall is addressed. A chemical slag pyrolysis reactor with anti-coking comprises brackets distributed up and down, a pyrolysis reactor is fixedly connected between the brackets distributed up and down, and also comprises a spray rack, the spray rack is connected to the lower part of the pyrolysis reactor, and at least one gas mixing barrel is fixedly connected to the outer wall of the pyrolysis reactor. The present invention utilizes an air pump to extract the oxygen-containing gas in the pyrolysis reactor, and utilizes a deoxidizer in a filter box to filter out the gas extracted from the pyrolysis reactor, and at the same time mixes in nitrogen, which is chemically very inactive and not easy to react with other substances, and then sprays these gases into the pyrolysis reactor through the spray rack, thereby achieving gas replacement, so that the pyrolysis reaction is carried out in a relatively oxygen-deficient and inert atmosphere, and the generation of coking materials is prevented as much as possible.

Description

Technical Field

[0001] The invention relates to the technical field of pyrolysis reactors, and in particular to an anti-coking chemical slag pyrolysis reactor. Background Art

[0002] The pyrolysis reaction treatment of chemical slag residues from existing pesticide and other chemical production is a major problem, because chemical slag usually contains complex organic and inorganic components, which will cause part of the material to burn rather than pyrolyze under oxygen conditions. The high temperature generated by the combustion will promote the formation of carbides, which adhere to the reactor wall to form a char layer that is severely sticky to the wall.

[0003] The continuously accumulated carbides are extremely difficult to remove. If they are broken by impact drill, it is not only unsafe, but also time-consuming and labor-intensive. In addition, carbon deposition affects heat transfer, seriously shortens the life of the equipment, and even leads to the inability to continue production, affecting the continuous production of equipment used in pyrolysis carbonization treatment, and seriously restricting the production scale. Therefore, the only option is to use intermittent treatment of the coke layer on the reactor wall, which results in low efficiency of pyrolysis treatment.

[0004] To this end, the present invention proposes an anti-coking chemical slag pyrolysis reactor. Summary of the invention

[0005] In order to overcome the disadvantage that a chemical slag pyrolysis reactor is prone to coking and sticking to the wall, the present invention provides a coking-resistant chemical slag pyrolysis reactor.

[0006] A coking-proof chemical slag pyrolysis reactor, comprising brackets distributed up and down, a pyrolysis reactor fixedly connected between the brackets distributed up and down, a motor fixedly connected to the pyrolysis reactor, a stirring rack fixedly connected to the output shaft of the motor, and a spray rack connected to the lower part of the pyrolysis reactor, at least one gas mixing barrel fixedly connected to the outer wall of the pyrolysis reactor, the spray rack and the gas mixing barrel are connected through a pipeline, at least one gas storage tank is fixedly connected to the bracket on the upper side, nitrogen is stored in the gas storage tank, a gas transmission pipe is connected between the gas mixing barrel and the adjacent gas storage tank, a suction rack is connected to the upper part of the pyrolysis reactor, at least one air pump is fixedly connected to the pyrolysis reactor, the air pump is connected to the adjacent gas mixing barrel, an air guide pipe is connected between the air pump and the suction rack, a filter box is fixedly connected to the gas mixing barrel, and a deoxidizer is stored in the filter box;

[0007] It also includes a fixed sleeve, the fixed sleeve is fixedly connected to the stirring frame, the fixed sleeve is slidably connected to a guide sleeve, the guide sleeve is fixedly connected to a circumferentially distributed connecting frame, the connecting frame is fixedly connected to an arc-shaped scraper for scraping coke deposits on the inner wall of the pyrolysis reactor up and down, the inner wall of the pyrolysis reactor is fixedly connected to two inclined guide rings, one of the connecting frames is fixedly connected to a limiting rod, and the limiting rod is limitedly matched with the guide ring;

[0008] It also includes a limiting frame, the limiting frame is fixedly connected to the pyrolysis reactor, the limiting frame is rotatably connected to a rotating ring, the rotating ring is fixedly connected to a plurality of connecting blocks, the connecting blocks are fixedly connected to the stirring frame, and the rotating ring is fixedly connected to stoppers distributed at equal intervals in the circumferential direction;

[0009] It also includes a connecting shaft, which is rotatably connected to the filter box. The connecting shaft is fixed with rotating blades symmetrically distributed along the connecting shaft. The rotating blades at both ends of the connecting shaft are in opposite directions. The rotating blades at one end are used for air intake, and the rotating blades at the other end are used for air exhaust.

[0010] Furthermore, it is particularly preferred that the guide ring is configured in a downwardly inclined elliptical shape.

[0011] In addition, it is particularly preferred that the stopper is tilted downward to knock down the chemical slag splashing upward.

[0012] In addition, it is particularly preferred that a plurality of fixing rods are further included, wherein the fixing rods are fixedly connected to the stirring frame, and the fixing rods are fixedly connected with shovel plates.

[0013] Beneficial effects:

[0014] The present invention utilizes an air pump to extract the oxygen-containing gas in the pyrolysis reactor, and utilizes a deoxidizer in a filter box to filter out the gas extracted from the pyrolysis reactor, and at the same time mixes nitrogen gas which is chemically inactive and not easy to react with other substances, and then sprays the gases into the pyrolysis reactor through a spray rack, thereby achieving gas replacement, allowing the pyrolysis reaction to proceed in a relatively oxygen-deficient and inert atmosphere, and preventing the generation of coke as much as possible.

[0015] Under the guiding action of the guide ring, the arc-shaped scraper of the present invention scrapes off a small amount of coke on the inner wall of the pyrolysis reactor while rotating up and down, thereby achieving the effect of removing the coke and preventing the coke from sticking to the wall.

[0016] The present invention utilizes the inclined stopper to rotate to prevent the chemical slag from splashing upward when the pyrolysis stirring frame is stirred, causing the chemical slag to adhere to the upper outer wall of the pyrolysis reactor and pyrolyze and coke, making it difficult to remove the coke on the upper side.

[0017] The present invention utilizes the rotating blades at the upper and lower ends to respectively play the effects of a suction fan and a blower, which accelerates air intake and exhaust on the one hand, and accelerates the mixing of reactor gas and nitrogen on the other hand, so that the deoxygenated reactor gas and nitrogen are evenly mixed and enter the pyrolysis reactor, reducing the generation of coking materials.

[0018] The invention stirs the chemical slag with a stirring frame and turns over the chemical slag at the bottom of the pyrolysis reactor through a shovel plate, thereby preventing the accumulation of materials to produce coked substances and removing the coked substances at the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the components such as the support, pyrolysis reactor and motor of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the components such as the support, pyrolysis reactor and stirring frame of the present invention.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of components such as the gas mixing barrel, the gas guide pipe and the gas storage tank of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of components such as the gas storage tank, gas transmission pipe and suction frame of the present invention.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the arc scraper, connecting frame, guide ring and other components of the present invention.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the guide ring, the limiting rod and the fixing sleeve and other components of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting frame, rotating ring, pyrolysis reactor and other components of the present invention.

[0027] Fig. 9 It is a schematic diagram of the exploded three-dimensional structure of the limit frame, rotating ring, connecting block and other components of the present invention.

[0028] Fig.10 It is a three-dimensional structural schematic diagram of the filter box, rotor blades, connecting shaft and other components of the present invention.

[0029] Fig.11 It is a three-dimensional structural schematic diagram of the shovel plate, fixing rod, stirring frame and other components of the present invention.

[0030] Marked in the figure: 1- bracket, 11- pyrolysis reactor, 12- motor, 1201- stirring frame, 13- spray frame, 14- mixing barrel, 15- air guide pipe, 16- gas storage tank, 17- air delivery pipe, 18- suction frame, 19- air pump, 110- filter box, 2- arc scraper, 21- connecting frame, 22- guide ring, 23- limit rod, 24- fixed sleeve, 25- guide sleeve, 3- limit frame, 31- rotating ring, 32- connecting block, 33- stopper, 4- rotating blade, 41- connecting shaft, 5- shovel plate, 51- fixed rod. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment 1: A chemical slag pyrolysis reactor for preventing coking, combined with the attached Figure 1 To Attachment Figure 5 , including brackets 1 distributed up and down, a pyrolysis reactor 11 is fixedly connected between the brackets 1 distributed up and down, a motor 12 is fixedly connected to the top of the pyrolysis reactor 11, an output shaft of the motor 12 is fixedly connected to a stirring frame 1201, the stirring frame 1201 is located in the pyrolysis reactor 11, a spray frame 13 is connected to the lower part of the pyrolysis reactor 11, two front and rear gas mixing barrels 14 are fixedly connected to the outer wall of the pyrolysis reactor 11, the spray frame 13 and the gas mixing barrel 14 are connected through a pipeline, and the left and right sides of the upper bracket 1 are fixedly connected to the front and rear two A gas storage tank 16, in which nitrogen is stored, a gas delivery pipe 17 is connected between the gas mixing barrel 14 and the adjacent gas storage tank 16, a suction rack 18 is connected to the upper part of the pyrolysis reactor 11, two front and rear air pumps 19 are fixedly connected to one side of the pyrolysis reactor 11 close to the gas mixing barrel 14, an air guide pipe 15 is connected between the input end of the air pump 19 and the suction rack 18, an output end of the air pump 19 is connected to the adjacent gas mixing barrel 14, a filter box 110 is fixedly connected to the middle of the gas mixing barrel 14, and a deoxidizer is stored in the filter box 110.

[0033] First, the chemical slag to be pyrolyzed is poured into the pyrolysis reactor 11, and then the air pump 19 is started, so that the suction frame 18 draws the gas in the pyrolysis reactor 11 into the air pump 19 through the air guide pipe 15, and then pumps it downward into the mixing barrel 14. At the same time, the gas storage tank 16 is opened, and the nitrogen in the gas storage tank 16 also enters the mixing barrel 14 through the gas pipe 17. The nitrogen and the gas extracted by the air pump 19 are mixed in the mixing barrel 14, and the gas extracted by the air pump 19 is filtered out of oxygen through the filter box 110. In this way, the deoxidized gas and nitrogen pass downward through the spray rack 13 and enter the pyrolysis reactor 11. In this way, by extracting the original gas in the pyrolysis reactor 11 and replacing it with the deoxidized gas and nitrogen, an oxygen-deficient reaction condition is created in the pyrolysis reactor 11. Then, the pyrolysis reactor 11 is heated, and the motor 12 is started. The output shaft of the motor 12 drives the stirring rack 1201 to rotate, so that the chemical slag is fully stirred, thereby fully carrying out the pyrolysis reaction.

[0034] In summary, the present invention utilizes the air pump 19 to extract the oxygen-containing gas in the pyrolysis reactor 11, and utilizes the deoxidizer in the filter box 110 to filter out the gas extracted from the pyrolysis reactor 11, and at the same time mixes in nitrogen gas which is chemically inactive and not easy to react with other substances, and then sprays these gases into the pyrolysis reactor 11 through the spray rack 13, thereby realizing gas replacement, allowing the pyrolysis reaction to proceed in a relatively oxygen-deficient and inert atmosphere, and preventing the generation of coke as much as possible.

[0035] Combined with Figure 6 To Attachment Figure 7 , also includes a fixed sleeve 24, the fixed sleeve 24 is fixedly connected to the upper part of the stirring frame 1201, the fixed sleeve 24 is slidably connected to the guide sleeve 25 in the up and down directions, the outer wall of the guide sleeve 25 is fixedly connected to three circumferentially distributed connecting frames 21, the bottom of the connecting frame 21 is fixedly connected to an arc scraper 2, the arc scraper 2 is in contact with the inner wall of the pyrolysis reactor 11, and is used to scrape off the coke on the inner wall of the pyrolysis reactor 11 from top to bottom, two guide rings 22 are fixedly connected to the upper part of the inner wall of the pyrolysis reactor 11, the guide ring 22 is set to be an ellipse inclined downward, and a limiting rod 23 is fixedly connected to the upper part of the connecting frame 21 on the right side, and the limiting rod 23 is limited in the gap between the two guide rings 22.

[0036] The rotation of the stirring frame 1201 drives the fixed sleeve 24 to rotate, thereby driving the connecting frame 21 to rotate through the guide sleeve 25, and then driving the arc scraper 2 and the limiting rod 23 to rotate. Under the guidance of the guide ring 22, the limiting rod 23 drives the guide sleeve 25 and the arc scraper 2 to move up and down through the connecting frame 21, so that the arc scraper 2 rotates and scrapes a small amount of coke on the inner wall of the pyrolysis reactor 11 up and down, thereby achieving the effect of removing the coke and preventing the coke from sticking to the wall.

[0037] Combined with Figure 8 To Attachment Fig. 9 , and also includes a limiting frame 3, the limiting frame 3 is fixedly connected to the inner wall of the pyrolysis reactor 11, a rotating ring 31 is rotatably connected to the inner side of the limiting frame 3, three connecting blocks 32 are fixedly connected to the bottom of the rotating ring 31, the connecting blocks 32 are fixedly connected to the stirring frame 1201, and blocks 33 distributed at equal intervals in the circumferential direction are fixedly connected to the inner side of the rotating ring 31, and the blocks 33 are tilted downward to knock down the chemical slag splashing upward.

[0038] When the stirring frame 1201 rotates, it drives the connecting block 32 to rotate, thereby driving the rotating ring 31 to rotate, and then driving the stopper 33 to rotate, to prevent the chemical slag below from splashing upwards when the stirring frame 1201 is pyrolyzing and stirring, causing the chemical slag to stick to the upper outer wall of the pyrolysis reactor 11, thereby causing the chemical slag to accumulate on the upper side and cause it to pyrolyze and coke, making it difficult to remove the coke.

[0039] Embodiment 2: Based on embodiment 1, Fig.10 , and also includes a connecting shaft 41, which is rotatably connected to the filter box 110, and the connecting shaft 41 passes through the filter box 110. The end of the connecting shaft 41 is fixedly connected with a rotating blade 4 which is symmetrically distributed along the connecting shaft 41. The rotating blade 4 is located in the mixing barrel 14. The rotating blades 4 at the upper and lower ends of the connecting shaft 41 are in opposite directions. The rotating blade 4 at the upper end is used for inhaling, and the rotating blade 4 at the lower end is used for exhausting.

[0040] When the reactor gas pumped out by the air pump 19 enters the gas mixing barrel 14, the upper rotor blade 4 drives the connecting shaft 41 to rotate due to the push of the air, thereby driving the lower rotor blade 4 to rotate together. The rotor blades 4 at the upper and lower ends respectively play the role of a suction fan and a blower, which accelerate the air intake and exhaust on the one hand, and accelerate the mixing of the reactor gas and nitrogen on the other hand, so that the deoxygenated reactor gas and nitrogen are evenly mixed and enter the pyrolysis reactor 11, reducing the generation of coking materials.

[0041] Combined with Fig.11 , and also includes three fixed rods 51, which are fixedly connected to the stirring frame 1201. A shovel plate 5 is fixedly connected to the fixed rod 51, and the shovel plate 5 is used to shovel up and turn over the chemical slag at the bottom of the pyrolysis reactor 11, and to remove the coked material at the bottom of the pyrolysis reactor 11.

[0042] When the stirring frame 1201 rotates, it drives the fixed rod 51 to rotate, thereby driving the shovel plate 5 to rotate together, so that the shovel plate 5 turns over the chemical slag at the bottom of the pyrolysis reactor 11, on the one hand to prevent the material from accumulating to produce coking materials, and on the other hand to remove the coked materials at the bottom.

[0043] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A chemical slag pyrolysis reactor for preventing coking, comprising upper and lower brackets (1), a pyrolysis reactor (11) being fixedly connected between the upper and lower brackets (1), a motor (12) being fixedly connected to the pyrolysis reactor (11), an output shaft of the motor (12) being fixedly connected to a stirring frame (1201), Its characteristics are: The pyrolysis reactor (11) further comprises a spray rack (13), the spray rack (13) being connected to the lower part of the pyrolysis reactor (11), at least one gas mixing barrel (14) being fixedly connected to the outer wall of the pyrolysis reactor (11), the spray rack (13) and the gas mixing barrel (14) being connected to each other via a pipeline, the upper bracket (1) being fixedly connected to at least one gas storage tank (16), the gas storage tank (16) storing nitrogen, the gas mixing barrel (14) and the adjacent gas storage tank (16) An air delivery pipe (17) is connected between the two, an upper part of the pyrolysis reaction kettle (11) is connected to a suction frame (18), the pyrolysis reaction kettle (11) is fixedly connected to at least one air pump (19), the air pump (19) is connected to the adjacent gas mixing barrel (14), an air guide pipe (15) is connected between the air pump (19) and the suction frame (18), a filter box (110) is fixedly connected inside the gas mixing barrel (14), and a deoxidizer is stored in the filter box (110); It also comprises a fixed sleeve (24), the fixed sleeve (24) being fixedly connected to the stirring frame (1201), the fixed sleeve (24) being slidably connected to a guide sleeve (25), the guide sleeve (25) being fixedly connected to a circumferentially distributed connecting frame (21), the connecting frame (21) being fixedly connected to an arc-shaped scraper (2) for scraping coke deposits from the inner wall of the pyrolysis reactor (11) upward and downward, the inner wall of the pyrolysis reactor (11) being fixedly connected to two inclined guide rings (22), one of the connecting frames (21) being fixedly connected to a limiting rod (23), the limiting rod (23) being in limiting cooperation with the guide ring (22); It also comprises a limiting frame (3), the limiting frame (3) being fixedly connected to the pyrolysis reactor (11), the limiting frame (3) being rotatably connected to a rotating ring (31), the rotating ring (31) being fixedly connected to a plurality of connecting blocks (32), the connecting blocks (32) being fixedly connected to the stirring frame (1201), and the rotating ring (31) being fixedly connected to stoppers (33) distributed at equal intervals in the circumferential direction; It also includes a connecting shaft (41), the connecting shaft (41) being rotatably connected to the filter box (110), the connecting shaft (41) being fixedly connected with rotating blades (4) symmetrically distributed along the connecting shaft (41), the rotating blades (4) at both ends of the connecting shaft (41) being in opposite directions, the rotating blades (4) at one end being used for air intake, and the rotating blades (4) at the other end being used for air exhaust.

2. The anti-coking chemical slag pyrolysis reactor according to claim 1, Its characteristics are: The guide ring (22) is configured to be an ellipse that is inclined downward.

3. The anti-coking chemical slag pyrolysis reactor according to claim 2, Its characteristics are: The stopper (33) is tilted downward and is used to knock down the chemical slag material splashing upward.

4. The anti-coking chemical slag pyrolysis reactor according to claim 3, Its characteristics are: It also comprises a plurality of fixing rods (51), wherein the fixing rods (51) are fixedly connected to the stirring frame (1201), and the fixing rods (51) are fixedly connected to a shovel plate (5).

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