Petroleum coke efficient calcining furnace and method

Abstract

The invention relates to the technical field of calcining furnaces, in particular to an efficient petroleum coke calcining furnace and method. The pretreatment mechanism comprises a shell fixedly connected to the upper end face of the calcining furnace, and a heat insulation frame is fixedly connected to the lower position in the shell; and the separation mechanism comprises an arc-surface rod which is slidably connected to the top in the shell, springback assemblies are arranged on the two sides of the bottom of the arc-surface rod in the length direction, vibration assemblies are obliquely arranged on the two sides of the arc-surface rod in the length direction, and a plurality of recoil assemblies are arranged at the positions, located on the springback assemblies, of the bottom of the arc-surface rod. Through a cambered surface rod, a springback assembly, a vibration assembly and a recoil assembly in the separation mechanism, the adhered petroleum coke can be separated, so that the adhered petroleum coke is prevented from influencing the calcination effect in the subsequent calcination stage, the petroleum coke can be uniformly heated, the calcination effect is improved, and the stable product quality is ensured; and a powerful guarantee is provided for smooth proceeding of a subsequent calcining stage.

Description

Technical Field

[0001] The invention relates to the technical field of calcining furnaces, and in particular to a petroleum coke high-efficiency calcining furnace and a method. Background Art

[0002] A petroleum coke high-efficiency calcining furnace is a device used to heat petroleum coke to high temperatures to remove its volatiles and increase its chemical stability and calorific value. Through efficient combustion technology, the furnace is able to complete the calcination process in a shorter time, saving energy and reducing emissions. Usually, advanced heat exchange technology and control systems are used to ensure uniform temperature and high thermal efficiency in the furnace, and to meet the quality requirements in petroleum coke production. This type of furnace is widely used in industries such as bauxite, steel, and chemicals.

[0003] Existing high-efficiency petroleum coke calcining furnaces are generally divided into a pretreatment stage and a calcination stage. In the pretreatment stage, petroleum coke is screened and impurity-removed by special devices to remove impurities in preparation for subsequent calcination. However, in the pretreatment stage, it is difficult to effectively treat the sticky petroleum coke caused by collisions during the transmission process, the sticky components of the petroleum coke itself, and other reasons; Adherent petroleum coke will lead to uneven distribution in the subsequent calcination stage, affecting the heat transfer efficiency, so that some petroleum coke cannot be fully heated, which in turn leads to different calcination degrees and uneven product quality. Moreover, during the calcination process, due to the lack of a mechanism to prevent the re-adhesion of petroleum coke, the re-adhered petroleum coke will hinder the smooth escape of volatiles, which will not only prolong the calcination time and reduce production efficiency, but may also affect the chemical stability and calorific value of the product due to local overheating or overburning, making it impossible to stably meet the strict quality standards in industry production. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a petroleum coke high-efficiency calcining furnace and method, which can effectively solve the problem in the prior art that the sticky petroleum coke will lead to uneven distribution in the subsequent calcination stage and affect the heat transfer efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a petroleum coke high-efficiency calcining furnace, comprising: Calcine furnace; A pretreatment mechanism, the pretreatment mechanism comprising a shell fixedly connected to the upper end surface of the calcining furnace, and a heat insulation frame fixedly connected to the lower position inside the shell; A separation mechanism, the separation mechanism comprising a cambered rod slidably connected to the top of the housing, rebound components are arranged on both sides of the length direction of the bottom of the cambered rod, vibration components are obliquely arranged on both sides of the length direction of the cambered rod, and a plurality of recoil components are arranged at the bottom of the cambered rod and located at the rebound component; The spraying mechanism comprises a curved air pipe fixedly connected to the top center position of the insulation frame, the bottom of the curved air pipe is fixedly connected to a hollow block, a plurality of rebound components are linearly arranged between the two sides of the curved air pipe and the inner walls of the two sides of the insulation frame, at least one elastic air pipe is arranged at the bottom of each rebound component, and a plurality of positioning tubes and filter components are rectangularly arranged on both sides of the hollow block.

[0006] Preferably, the gas output end of the calcining furnace is fixedly connected to an exhaust pipe, and the solid output end of the calcining furnace is fixedly connected to a discharge pipe; A controller is installed on the side of the shell, and a feed pipe is fixedly connected to the upper end face of the shell. A first solenoid valve is installed on the body of the feed pipe, and the first solenoid valve is electrically connected to the controller. At least one heater is fixedly connected to the inner wall of the insulation frame, and the heater is electrically connected to the controller. A hollow funnel is fixedly connected to the inner bottom of the insulation frame, and multiple air holes are provided on the inner inclined surfaces around the hollow funnel. A connecting pipe is fixedly connected to the top of the hollow funnel, and the side of the hollow block away from the arc-surface air pipe is fixedly connected to the connecting pipe. The nozzle of the hollow funnel is fixedly connected to a second solenoid valve, and the second solenoid valve is electrically connected to the controller.

[0007] A method for a petroleum coke efficient calcining furnace, the method comprising: separation of adhered petroleum coke, anti-adhesion of petroleum coke, and pressurization and decompression of petroleum coke, specifically: Separation of adhered petroleum coke: First, the adhered petroleum coke entering the shell through the feed pipe is separated into two parts under the action of the cambered rod, so that the adhered petroleum coke contacts the vibration components on both sides. Since the adhered petroleum coke is a free fall when entering the shell, when the adhered petroleum coke contacts the cambered rod and the vibration component, it will cause impact on the cambered rod and the vibration component, thereby generating downward pressure. As the cambered rod and the vibration component are pressed downward, the rebound component will be squeezed. Since the impact caused by the adhered petroleum coke is intermittent, the rebound component will restore the cambered rod and the vibration component to their initial positions when the adhered petroleum coke does not impact the cambered rod and the vibration component. This reciprocating process causes the vibration component to vibrate, and the vibrating vibration component achieves the separation effect of the adhered petroleum coke. Anti-adhesion of petroleum coke: The liquid is received through the elastic air pipe and discharged through the elastic airbag to spray the liquid on the separated petroleum coke, and the petroleum coke and the liquid are fully mixed through the elastic component; Pressurization and decompression of petroleum coke: air containing super-concentrated oxygen is received through the curved air pipe, and the air containing super-concentrated oxygen is continuously discharged into the shell through the hollow block, positioning tube and filter assembly, thereby increasing the air pressure inside the shell, allowing the oxygen in the air to more fully contact the petroleum coke, accelerating the oxidation reaction in the subsequent calcination process. As the air pressure inside the shell reaches the specified value, the hollow block and the curved air pipe receive suction, thereby releasing the air pressure inside the shell, restoring the air pressure inside the shell to normal, and entering the calcining furnace for calcination.

[0008] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. Through the arc rod, rebound component, vibration component and recoil component in the separation mechanism, the petroleum coke that is stuck can be separated without secondary damage, so as to avoid the sticking petroleum coke affecting the calcination effect in the subsequent calcination stage. Among them, the arc rod and the vibration component use the collision force when the petroleum coke falls. The collision force of the petroleum coke falling compresses the rebound component. Because the collision force is discontinuous, the rebound component rebounds when the force disappears, driving the arc rod and the vibration component to restore the initial state, so that the vibration component vibrates, and the sticking petroleum coke is separated without causing secondary damage, avoiding uneven distribution of materials in the furnace due to adhesion, ensuring stable heat transfer efficiency, making the petroleum coke evenly heated, improving the calcination effect, ensuring stable product quality, and providing strong guarantee for the smooth progress of the subsequent calcination stage.

[0009] 2. Through the rebound component, elastic air pipe, elastic component and filter component in the spraying mechanism, the separated petroleum coke can be sprayed with protective liquid to avoid the petroleum coke from sticking again when it enters the subsequent calcination stage. Moreover, after spraying the protective liquid, the air containing super-concentrated oxygen can be transported into the outer shell to achieve pressurized treatment of the petroleum coke. The elastic air pipe cooperates with the elastic air bag to spray the protective liquid onto the surface of the petroleum coke, and the elastic air pipe is made to reciprocate up and down, thereby avoiding the petroleum coke from agglomerating around the elastic air bag and affecting the spraying effect of the elastic air bag. When the hollow block is discharged from the filter component, the air is dispersed and discharged, and the air is absorbed in the hollow block to avoid the absorption of fine petroleum coke particles, thereby promoting the subsequent calcination reaction of the petroleum coke to be more sufficient and efficient.

[0010] 3. Through the compressed air box and the suction and exhaust fan in the air and liquid supply mechanism, the air containing super-concentrated oxygen is transported into the hollow block by means of the arc-surface air pipe. The suction and exhaust fan is used to absorb the outside air, and the compressed air box stores compressed oxygen, which is used to transport a certain amount of oxygen while the suction and exhaust fan is transporting the air, thereby increasing the oxygen content in the air. When the air pressure transported to the outer shell by the suction and exhaust fan and the compressed air box reaches the specified pressure, the suction and exhaust fan starts to absorb the air in the outer shell. At this time, the compressed air box stops transporting oxygen until the air pressure in the outer shell reaches the standard pressure. The liquid storage tank is used to transport the protective liquid into the elastic airbag through the elastic air pipe, so that the protective liquid can be sprayed on the petroleum coke in time to prevent it from sticking again during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the overall side of the present invention; Figure 3 It is a structural schematic diagram of the pretreatment mechanism of the present invention; Figure 4 It is a schematic diagram of the structure inside the heat insulation frame of the present invention; Figure 5 It is a schematic diagram of the structure inside the pretreatment mechanism of the present invention; Figure 6 It is a structural schematic diagram of the separation mechanism of the present invention; Figure 7 It is a structural schematic diagram of the spraying mechanism of the present invention; Figure 8 It is a schematic diagram of the overall structure of the spraying mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the rebound component of the present invention; Fig.10 It is a schematic diagram of the structure of the elastic air tube of the present invention; Fig.11 It is a schematic diagram of the structure of the elastic component of the present invention; Fig.12 It is a structural schematic diagram of the hollow block of the present invention; Fig.13 It is a schematic diagram of the structure of the filter assembly of the present invention.

[0013] Figure numerals: 1, calcining furnace; 11, exhaust pipe; 12, discharge pipe; 2, pretreatment mechanism; 21, shell; 22, feed pipe; 23, first solenoid valve; 24, insulation frame; 25, heater; 26, hollow funnel; 261, air hole; 27, connecting pipe; 28, second solenoid valve; 3, separation mechanism; 31, cambered rod; 32, rebound assembly; 321, first spring; 322, fixing plate; 33, vibration assembly; 331, fixing frame; 332, cambered elastic rod; 333, vibration sheet; 34, recoil assembly; 341, elastic rod; 342, weighted ball; 4, spraying mechanism; 41, cambered air pipe; 411, intercommunication pipe; 42, hollow block; 43, rebound assembly; 431 , fixing rod; 432, resonance sleeve; 44, elastic air pipe; 45, elastic air bag; 451, inclined nozzle; 46, elastic component; 461, connecting plate; 462, elastic block; 463, flexible plate; 464, partition rod; 47, positioning tube; 48, filter component; 481, fixing ring; 482, fixing plate; 483, second spring; 484, elastic telescopic rod; 485, gas hood; 486, sealing ring; 487, filter net; 49, gas distribution pipe; 5, gas and liquid supply mechanism; 51, compressed air box; 511, gas metering controller; 512, first air pipe; 52, suction and exhaust fan; 521, second air pipe; 53, gas mixing valve; 54, liquid storage tank; 541, diverter pipe. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] The present invention will be further described below in conjunction with the embodiments.

[0016] Example: Refer to Figures 1 to 13 , a petroleum coke high-efficiency calcining furnace, comprising: Calcination furnace 1; The pretreatment mechanism 2 comprises a shell 21 fixedly connected to the upper end surface of the calcining furnace 1, and a heat insulation frame 24 is fixedly connected to the lower position of the shell 21; The separation mechanism 3 includes a cambered rod 31 slidably connected to the top of the housing 21, rebound components 32 are arranged on both sides of the length direction of the bottom of the cambered rod 31, vibration components 33 are obliquely arranged on both sides of the length direction of the cambered rod 31, and a plurality of recoil components 34 are arranged at the bottom of the cambered rod 31 and located at the rebound component 32; The spraying mechanism 4 includes a curved air pipe 41 fixedly connected to the top center position of the insulation frame 24, and the bottom of the curved air pipe 41 is fixedly connected to a hollow block 42. A plurality of rebound components 43 are linearly arrayed between the two sides of the curved air pipe 41 and the inner walls of the two sides of the insulation frame 24, and at least one elastic air pipe 44 is arranged at the bottom of each rebound component 43. A plurality of positioning tubes 47 and filter components 48 are rectangularly arrayed on both sides of the hollow block 42.

[0017] The cambered rod 31 of the separation mechanism 3 is used to guide and divide the petroleum coke entering the shell 21. The petroleum coke falls and collides with the cambered rod 31 and the vibration component 33, compressing the rebound component 32. When the collision disappears, the rebound component 32 rebounds, so that the cambered rod 31 and the vibration component 33 return to the initial position. The collision is interrupted, and the cambered rod 31 and the vibration component 33 vibrate. The recoil component 34 enhances the compression and rebound degree of the rebound component 32, and helps the vibration component 33 to separate the adhered petroleum coke. The spraying mechanism 4 transports the air with super-concentrated oxygen into the hollow block 42 through the cambered air pipe 41, and discharges it into the shell 21 through the positioning pipe 47 and the filter component 48, so as to realize the pressurization of the shell 21.

[0018] Reference Figures 1 to 4 The gas output end of the calcining furnace 1 is fixedly connected to an exhaust pipe 11, and the solid output end of the calcining furnace 1 is fixedly connected to a discharge pipe 12; A controller is installed on the side of the shell 21, and a feed pipe 22 is fixedly connected to the upper end surface of the shell 21. A first solenoid valve 23 is installed on the body of the feed pipe 22, and the first solenoid valve 23 is electrically connected to the controller. At least one heater 25 is fixedly connected to the inner wall of the insulation frame 24, and the heater 25 is electrically connected to the controller. A hollow funnel 26 is fixedly connected to the inner bottom of the insulation frame 24, and a plurality of air holes 261 are provided on the inner inclined surfaces around the hollow funnel 26. A connecting pipe 27 is fixedly connected to the top of the hollow funnel 26, and a side of the hollow block 42 away from the arc-surface air pipe 41 is fixedly connected to the connecting pipe 27. A second solenoid valve 28 is fixedly connected to the nozzle of the hollow funnel 26, and the second solenoid valve 28 is electrically connected to the controller.

[0019] The first solenoid valve 23 is used to control the feed pipe 22 to open when conveying petroleum coke into the outer shell 21, and to close when conveying air with super-concentrated oxygen; the second solenoid valve 28 is closed when conveying both petroleum coke and air with super-concentrated oxygen, and is opened after completing the anti-adhesion treatment of the petroleum coke in the outer shell 21. The heater 25 heats the petroleum coke when spraying protective liquid on the separated petroleum coke and pressurizing it.

[0020] Reference Figures 5 and 6The rebound assembly 32 includes a plurality of first springs 321 fixedly connected to the bottom of the cambered rod 31, and the other end of the first spring 321 is fixedly connected to a fixing plate 322, and the fixing plate 322 is fixedly connected to the inner wall of the outer shell 21 on one side thereof close to the inner wall of the outer shell 21; The vibration assembly 33 includes a fixed frame 331 which is fixedly connected to the side of the arc rod 31, and a plurality of arc elastic rods 332 are fixedly connected to the inner linear array of the fixed frame 331. A vibration sheet 333 is fixedly connected to the side of the arc elastic rod 332 away from the arc surface. The recoil assembly 34 includes an elastic rod 341 fixedly connected to the bottom of the cambered rod 31 , and a weighted ball 342 is fixedly connected to the other end of the elastic rod 341 .

[0021] The first spring 321 in the rebound component 32 is compressed by utilizing the collision force generated by the falling petroleum coke on the cambered rod 31 and the vibration component 33. Since the collision force when the petroleum coke falls is intermittent, the first spring 321 starts to rebound after the collision force disappears, and the cambered rod 31 and the vibration component 33 vibrate in this reciprocating manner. In combination with the elastic rod 341 and the counterweight ball 342 in the recoil component 34, the vibration effect of the cambered rod 31 and the vibration component 33 is enhanced.

[0022] Reference Figures 7 to 11 The input end of the arc-surface air pipe 41 is fixedly connected with an interconnecting pipe 411; The rebound component 43 includes a fixed rod 431 fixedly connected to the side of the curved air tube 41, the other side of the fixed rod 431 is fixedly connected to the inner wall of the insulation frame 24, the rod body of the fixed rod 431 is linearly arrayed and fixedly connected to at least two resonance sleeves 432, the bottom of the resonance sleeve 432 is fixedly connected to the elastic air tube 44, and the other end of the elastic air tube 44 is fixedly connected to the split air tube 49.

[0023] The elastic air tube 44 has a plurality of elastic air bags 45 fixedly connected in a linear array on its body. The elastic air bags 45 have a plurality of inclined nozzles 451 arranged in an annular array on their outer circumference. The elastic air bags 45 have a plurality of elastic components 46 arranged in an annular array on their outer circumference. The elastic components 46 and the inclined nozzles 451 are arranged alternately.

[0024] The resonance effect can be achieved by utilizing the resonance sleeve 432 in the fixed rod 431, and the elastic air tube 44 utilizes the air with super-concentrated oxygen delivered by the air distribution pipe 49 to be ejected from the inclined nozzle 451 of the elastic airbag 45, and utilizes the ejection force of the ejected air to make the elastic air tube 44 reciprocate up and down.

[0025] Reference Figure 10 to Figure 11The elastic component 46 includes a connecting plate 461 fixedly connected to the outer peripheral surface of the elastic airbag 45, and a plurality of elastic blocks 462 are fixedly connected from top to bottom on opposite sides of the connecting plate 461, and a plurality of flexible plates 463 are fixedly connected in a common linear array on the other side of each elastic block 462, and a plurality of partition rods 464 are fixedly connected in a common linear array on the other side of each flexible plate 463.

[0026] The elastic block 462 in the elastic component 46 can be used to cushion the petroleum coke when the flexible plate 463 and the partition rod 464 are collided with the petroleum coke flipped by the hollow funnel 26 to avoid damage to the petroleum coke. At the same time, the flexible plate 463 and the partition rod 464 can also change the direction of the petroleum coke, so that the petroleum coke gathered in the hollow funnel 26 and around the elastic airbag 45 can come into contact with the protective liquid.

[0027] Reference Figure 8 , Figure 10 to Figure 11 The positioning tube 47 is fixedly connected to the hollow block 42, and the number and position of the filter assembly 48 correspond to the positioning tube 47 one by one. The filter assembly 48 includes a plurality of second springs 483 fixedly connected to the side of the hollow block 42 in a circular array with the positioning tube 47 as the center, and a fixing plate 482 is fixedly connected to the other side of the second spring 483. Each fixing plate 482 is fixedly connected to a fixing ring 481 on the opposite side. A sealing ring 486 is fixedly connected to the edge of the fixing ring 481 facing the positioning tube 47, and a filter screen 487 is fixedly connected to the inner circumference of the fixing ring 481. The filter screen 487 is fixedly connected to the side away from the positioning tube 47 with an elastic telescopic rod 484, and the telescopic end of the elastic telescopic rod 484 is fixedly connected to a gas gathering hood 485.

[0028] When the hollow block 42 absorbs air, the air collecting hood 485 in the filter assembly 48 utilizes air resistance to squeeze the fixed ring 481, causing the second spring 483 to be compressed. As the second spring 483 is compressed, the fixed ring 481 is in sealed contact with the positioning tube 47 through the sealing ring 486, so that the sucked air can only enter the hollow block 42 through the filter screen 487, thereby preventing fine petroleum coke from being sucked in. When the suction force disappears, the compressed second spring 483 rebounds, allowing the fine petroleum coke retained on the filter screen 487 to break away. When the hollow block 42 discharges air, the air collecting hood 485 prompts the second spring 483 to extend, thereby increasing the distance between the fixed ring 481 and the positioning tube 47, thereby realizing rapid delivery of air into the outer shell 21.

[0029] Reference Figures 1 to 3, and also includes a gas supply and liquid supply mechanism 5, which includes a compressed gas box 51, an exhaust fan 52 and a liquid storage tank 54 fixedly connected to the side of the calcining furnace 1, and the compressed gas box 51, the exhaust fan 52, and the liquid storage tank 54 are all electrically connected to the controller. The shell 21 is located on the side of the arc-surface air pipe 41 and is fixedly connected with a gas mixing valve 53. The gas mixing valve 53 has two input ends and one output end. The other side of the interconnecting pipe 411 passes through the shell 21 and is fixedly connected to the output end of the gas mixing valve 53, and the gas mixing valve 53 is electrically connected to the controller.

[0030] The output end of the compressed air tank 51 is fixedly connected to a gas metering controller 511, and the output end of the gas metering controller 511 is fixedly connected to a first air pipe 512, and the other end of the first air pipe 512 is fixedly connected to one of the input ends of the gas mixing valve 53. The output end of the suction and exhaust fan 52 is fixedly connected to a second air pipe 521, and the other end of the second air pipe 521 is fixedly connected to another input end of the gas mixing valve 53. The output end of the liquid storage tank 54 is fixedly connected to a shunt pipe 541, and the shunt pipe 541 is composed of a main pipe and a plurality of branch pipes. The main pipe is connected to the liquid storage tank 54, and the number of the branch pipes corresponds to that of the gas shunt pipe 49, and they are connected to each other.

[0031] A gas mixing valve 53 is used to control the ratio of air and oxygen delivered to the outer shell 21 by the compressed air box 51 and the suction and exhaust fan 52. The gas mixing valve 53 transmits the air to the curved air pipe 41 through the interconnecting pipe 411, and the gas metering controller 511 in the compressed air box 51 is used to detect and control the amount of oxygen delivered by the compressed air box 51. The liquid storage tank 54 delivers the protective liquid to the gas distribution pipe 49 through the diversion pipe 541, and then delivers the protective liquid to the elastic air pipe 44 through the gas distribution pipe 49.

[0032] The working principle of the present invention is as follows: Step 1: Before the equipment is put into operation, the feed pipe 22 is first connected to the previous process of the equipment (the equipment in this scheme refers to the high-efficiency calcining furnace for petroleum coke) to ensure that the petroleum coke can smoothly enter the pretreatment mechanism of the calcining furnace 1. At the same time, the staff controls the first solenoid valve 23 to open through the controller, and the petroleum coke is discharged as the previous process of the equipment. At this time, the petroleum coke falls freely from the feed pipe 22 into the outer shell 21 under the action of gravity. Due to the viscosity of the petroleum coke itself and the mutual collision during transportation, there will be partial adhesion. During the falling process in the outer shell 21, these adhered petroleum cokes will first hit the arc surface of the arc rod 31 of the separation mechanism 3. Since the arc surface of the arc rod 31 is upward, The convex curved shape, so when the petroleum coke hits the arc surface, the curved arc surface prevents the petroleum coke from falling directly vertically. According to the basic principle of object movement, when the petroleum coke contacts the arc surface, the tangent direction of the contact point will change the movement direction of the petroleum coke, so that the petroleum coke will be dispersed to both sides along the trend of the arc surface under the action of the arc surface. The petroleum coke will be dispersed to both sides along the trend of the arc surface under the action of the arc surface, thereby realizing the guiding and dividing effect of the arc rod 31 on the petroleum coke. The arc rod 31 divides the petroleum coke (the petroleum coke without adhesion and the petroleum coke with adhesion will be collectively referred to as petroleum coke) into two parts, so that they are respectively in contact with the vibration components 33 inclined on both sides.

[0033] When the adhered petroleum coke contacts the cambered rod 31 and the vibration assembly 33, a downward impact force is generated on them. This impact force causes the cambered rod 31 and the vibration assembly 33 to move downward, thereby squeezing the first spring 321 in the rebound assembly 32. Since the first spring 321 is elastic, it will undergo elastic deformation when squeezed to store elastic potential energy. However, the impact caused by the petroleum coke on the cambered rod 31 and the vibration assembly 33 is not continuous and stable, but intermittent. Because the petroleum coke enters the shell 21 through the feed pipe 22 by relying on gravity to fall freely, during the feeding process, the petroleum coke does not enter continuously and closely, but falls in batches or blocks at certain intervals. At the same time, due to the differences in the diameter of the feed pipe 22, the particle size and shape of the petroleum coke, the amount of petroleum coke entering the shell 21 each time and the time interval are not fixed. This discrete feeding method determines that the time for them to impact the cambered rod 31 and the vibration assembly 33 is discontinuous, thereby causing the intermittent impact. Since the impact of the oil coke is not continuous and stable, but intermittent, when the impact force disappears, the first spring 321 begins to release the stored elastic potential energy, recovers to its original length, and generates an upward rebound force. This rebound force drives the arc rod 31 and the vibration component 33 back to the initial position, and repeats this process. The arc rod 31 and the vibration component 33 will continue to vibrate up and down. During the vibration of the arc rod 31 and the vibration component 33, the recoil component 34 also enhances the up and down vibration amplitude of the arc rod 31 and the vibration component 33, because when the arc rod 31 and the vibration component 33 are pressed down, the elastic rod 341 will undergo elastic deformation with the movement of the arc rod 31 At the same time, due to its own inertia, the counterweight ball 342 will generate a force in the opposite direction of the downward pressure. This force will hinder the downward pressure speed of the arc rod 31 and the vibration component 33 to a certain extent, making their downward pressure process relatively slow and storing more energy. When the arc rod 31 and the vibration component 33 rebound, the inertia of the counterweight ball 342 will enhance the rebound force, further increasing the vibration amplitude and frequency, and the vibrating vibration component 33 continues to hit the adhered petroleum coke, so that the adhered parts of the petroleum coke are gradually separated, thereby avoiding the problem of uneven material distribution caused by the adhered petroleum coke during subsequent calcination, ensuring the heat transfer efficiency, and allowing the petroleum coke to be evenly heated.

[0034] The reason why the vibrating assembly 33 continuously strikes the adhered petroleum coke to separate the adhered petroleum coke is as follows: When the petroleum coke hits the vibration component 33, the kinetic energy of the petroleum coke is transferred to the vibration component 33, causing it to produce initial displacement and deformation, and the fixed frame 331 in the vibration component 33 is tilted and fixedly connected to the arc rod 31, and the arc elastic rods 332 distributed in the internal linear array undergo elastic deformation under the impact force, absorbing and storing part of the energy, and because the impact of the petroleum coke is intermittent, when the impact force disappears, the arc elastic rods 332 begin to rebound, releasing the stored elastic potential energy, and this rebound enables the fixed frame 331 to drive the vibration plate 333 to return to a position close to the initial position, generating an upward acceleration, and with the subsequent continuous impact of the petroleum coke, the vibration component 33 is continuously stimulated, and under the elastic recovery force of the arc elastic rods 332, it reciprocates up and down. During the vibration process of the vibration component 33, the vibration plate 333 will continuously contact with the petroleum coke and exert a force. The mechanical force generated by the vibration of the vibration plate 333 will act on the petroleum coke joints where adhesion occurs in the petroleum coke, so that the adhesion points are subjected to repeated pulling, twisting and other stresses. These stresses will gradually destroy the adhesion structure between the petroleum cokes, so that the adhered petroleum cokes are gradually separated. For example, when the vibration plate 333 moves upward, it will generate an upward pulling force on the adhered petroleum coke in contact with it; when it moves downward, it will generate a downward pressure. This alternating force effectively separates the adhered parts. And the vibration component 33 will not destroy its original state when separating the adhered petroleum coke, because, first, the arc elastic rod 332 has good elasticity and buffering performance. When the petroleum coke collides, it absorbs most of the impact energy through its own elastic deformation, reducing the impact force transmitted to the petroleum coke, just like a spring buffering the collision of objects, making the force of the vibration component 33 on the petroleum coke softer; second, the intermittent impact of petroleum coke on the arc rod 31 and the vibration component 33 limits the vibration frequency and amplitude of the vibration component 33; third, the material of the vibration plate 333 is flexible and tilted on one side. The flexibility enables it to better fit the surface of the petroleum coke to disperse the force and avoid the generation of concentrated excessive pressure points. The tilted design helps to guide the movement direction of the petroleum coke and reduce damage to the petroleum coke during the separation process.

[0035] Step 2: After the separation mechanism 3 completes the separation of the adhered part of the petroleum coke, the petroleum coke falls to the lower part of the shell 21 due to free fall. At this time, the liquid storage tank 54 in the gas supply and liquid supply mechanism 5 starts to work under the control of the controller. The liquid storage tank 54 is composed of a pump body and a liquid storage barrel. The liquid storage barrel of the liquid storage tank 54 stores a protective liquid for preventing the petroleum coke from adhering again, such as a tar ammonia water separator, coal tar, etc. With the start of the liquid storage tank 54, the pump body transports the protective liquid stored in the liquid storage barrel to the shunt pipe 541. The shunt pipe 541 is composed of a main pipe and a plurality of branch pipes. The main pipe is connected to the pump body of the liquid storage tank 54, so that the protective liquid flows into the gas distribution pipe 49 through the branch pipe of the shunt pipe 541, and then enters the elastic air pipe 44 at each position of the shunt pipe 541; Among them, since the elastic air tube 44 is provided with a plurality of elastic air bags 45 at intervals, and the outer peripheral surface of the elastic air bag 45 is provided with a plurality of inclined nozzles 451 in a circular array, when the protective liquid enters the elastic air tube 44, it will fill the elastic air bag 45. Under the pressure of the protective liquid, the elastic air bag 45 sprays the protective liquid onto the surrounding petroleum coke through the inclined nozzles 451. During the spraying process of the protective liquid, the spraying force generated by the spraying of the protective liquid will act on the elastic component 46, thereby causing the elastic air tube 44 to reciprocate up and down, because: The resonance sleeve 432 on the fixed rod 431 in the rebound component 43 cooperates with the elastic air pipe 44. When the arc-surface air pipe 41 transports air containing super-concentrated oxygen (the process of the arc-surface air pipe 41 transporting air containing super-concentrated oxygen will be described later), the flow of the airflow triggers the resonance sleeve 432 to resonate, driving the elastic air pipe 44 to move up and down. This movement allows the protective liquid to be sprayed more widely and evenly on the surrounding petroleum coke, avoiding the concentrated spraying of the protective liquid on a local area, ensuring that the surface of the petroleum coke can be covered by the protective liquid. In addition, since the elastic component 46 and the inclined nozzles 451 on the elastic airbag 45 are alternately arranged, when the elastic airbag 45 sprays the protective liquid, the spray force generated will act on the elastic component 46, and the elastic block 462 in the elastic component 46 will undergo elastic deformation under the action of the spray force. This deformation causes the flexible The flexible plate 463 and the partition rod 464 also produce corresponding movements. During the movement, the flexible plate 463 and the partition rod 464, on the one hand, play a buffering role for the petroleum coke to prevent the petroleum coke from being damaged due to collision when it contacts the elastic component 46; on the other hand, they will change the movement trajectory and position of the petroleum coke. For example, when the petroleum coke gathers around the elastic airbag 45, the flexible plate 463 and the partition rod 464 will block and guide the movement direction of the petroleum coke, so that the petroleum coke can be fully contacted and mixed with the protective liquid. Moreover, in the hollow funnel 26, the air transmitted by the hollow block 42 is discharged from the air hole 261 (this process is explained later), so as to realize the flipping process of the petroleum coke gathered in the hollow funnel 26, the elastic component 46 can also interact with the flipped petroleum coke, further promote the uniform mixing of the petroleum coke and the protective liquid, and effectively prevent the petroleum coke from sticking again.

[0036] Step 3: When the liquid storage tank 54 is started, the suction and exhaust fan 52 and the compressed air tank 51 are also started synchronously. After the suction and exhaust fan 52 is started, it will first rotate forward to absorb the outside air, while the compressed air tank 51 stores compressed oxygen inside, and the amount of oxygen delivered by the compressed air tank 51 is controlled by the gas metering controller 511 (the gas metering controller 511 controls the amount of oxygen delivered, which is customized by the staff in the controller according to the actual situation). The outside air and the compressed oxygen are respectively delivered to the gas mixing valve 53 through the first air pipe 512 and the second air pipe 521. Under the control of the controller, according to the preset The mixing ratio of air and oxygen is adjusted proportionally, and then the mixed air containing super-concentrated oxygen is transported to the curved air pipe 41 through the interconnecting pipe 411. The curved air pipe 41 transports the air containing super-concentrated oxygen to the hollow block 42 (the air with super-concentrated oxygen is collectively referred to as air later). The hollow block 42 then transports the air to the outer shell 21 through the positioning tube 47, the hollow funnel 26 and the filter assembly 48. As the gas continuously enters the outer shell 21, the internal air pressure gradually increases. Since an air pressure detector is provided in the outer shell 21 (the air pressure detector is a prior art and is not shown in the figure).

[0037] Special explanation is required: during the petroleum coke feeding stage, the controller controls the first solenoid valve 23 to open, so that the petroleum coke enters the shell 21 through the feed pipe 22; when the air is delivered, the first solenoid valve 23 and the second solenoid valve 28 are both closed to prevent gas leakage to ensure normal pressurization in the shell 21, so that a sealed space is formed in the shell 21, and the second solenoid valve 28 remains closed during the supply and pressurization process to prevent the gas in the shell 21 from leaking from the funnel nozzle, which is conducive to increasing the air pressure; when the air pressure in the shell 21 reaches the specified value and is discharged, the pressurization and anti-adhesion treatment of the petroleum coke are completed, and the second solenoid valve 28 is opened at the same time as the first solenoid valve 23, so that the treated petroleum coke enters the calcining furnace 1 for calcination.

[0038] The pressure generated by the pressurized air helps the elastic air pipe 44 to spray the protective liquid more efficiently, which makes the elastic component 46 work better, so that the protective liquid is fully mixed with the petroleum coke, and the petroleum coke is prevented from re-adhering in the subsequent process. At the same time, the higher air pressure makes the super-concentrated oxygen contact with the petroleum coke more fully to accelerate the oxidation reaction, so that the combustible components in the petroleum coke are quickly oxidized, impurities and volatiles are effectively removed, the purity of the petroleum coke is improved, and its chemical stability and calorific value are enhanced, thereby improving the subsequent calcination effect; When the petroleum coke is pressurized and the protective liquid is sprayed, the heater 25 preheats the petroleum coke according to the process requirements under the control of the controller. When the air pressure detector detects that the air pressure in the shell 21 reaches the set value, the controller issues a command to make the suction and exhaust fan 52 start to reverse and generate suction. At the same time as the suction and exhaust fan 52 reverses, the gas metering controller 511 closes, so that the hollow block 42 and the curved air pipe 41 receive the suction, release the air pressure in the shell 21, and restore it to the normal air pressure level. At this time, the second solenoid valve 28 opens, and the petroleum coke after anti-adhesion treatment and air pressure adjustment passes through the hollow funnel 26 and enters the calcining furnace 1 for calcination; Special explanation is required: the state of the filter assembly 48 and the hollow funnel 26 when sucking and exhausting air and their effect on petroleum coke: 1): The state of the filter assembly 48 when absorbing and exhausting air and its effect on petroleum coke: Inhalation state: the suction and exhaust fan 52 reverses, and the hollow block 42 absorbs the air in the outer shell 21. The gas will produce air resistance to the gas gathering hood 485 of the filter assembly 48. The gas gathering hood 485 squeezes the fixing ring 481 to move it toward the positioning tube 47 and compresses the second spring 483. At this time, the fixing ring 481 is in tight sealing contact with the positioning tube 47 through the sealing ring 486. The outside air can enter the hollow block 42 only after being filtered by the filter net 487, preventing fine petroleum coke particles from being inhaled, ensuring the purity of the air entering the outer shell 21, and providing a good reaction environment.

[0039] Exhaust state: the suction and exhaust fan 52 rotates forward, the hollow block 42 discharges air into the outer shell 21, the second spring 483 rebounds, the distance between the fixing ring 481 and the positioning tube 47 increases, the air can quickly enter the outer shell 21 through the positioning tube 47, and the fine petroleum coke particles originally attached to the filter screen 487 are detached under the rebound action of the second spring 483, and return to the outer shell 21 to participate in subsequent processing, thereby avoiding material loss.

[0040] 2): The state of the hollow funnel 26 when sucking and exhausting air and its effect on petroleum coke: Inhalation state: when air is sucked into the outer shell 21, the hollow funnel 26 uses its special funnel shape to gather the petroleum coke falling from above, providing it with temporary storage and gathering space, so that it can enter the calcining furnace 1 in a unified manner later. It does not directly participate in the air suction and exhaust process, and can ensure that the petroleum coke enters the next stage in an orderly manner.

[0041] Exhaust state: when releasing air into the outer shell 21, part of the air is discharged through the pores 261 on the inner slope around the hollow funnel 26. The discharged air exerts a force on the petroleum coke gathered therein to flip it over, allowing the petroleum coke to contact the protective liquid more fully, enhancing the anti-adhesion effect, and at the same time making the petroleum coke more evenly distributed, preparing for entering the calcining furnace 1, ensuring uniform heat transfer during calcination, and improving the calcination quality.

[0042] A method for a petroleum coke efficient calcining furnace, the method comprising: separation of adhered petroleum coke, anti-adhesion of petroleum coke, and pressurization and decompression of petroleum coke, specifically: Separation of adhered petroleum coke: First, the adhered petroleum coke entering the shell through the feed pipe is separated into two parts under the action of the cambered rod, so that the adhered petroleum coke contacts the vibration components on both sides. Since the adhered petroleum coke is a free fall when entering the shell, when the adhered petroleum coke contacts the cambered rod and the vibration component, it will cause impact on the cambered rod and the vibration component, thereby generating downward pressure. As the cambered rod and the vibration component are pressed downward, the rebound component will be squeezed. Since the impact caused by the adhered petroleum coke is intermittent, the rebound component will restore the cambered rod and the vibration component to their initial positions when the adhered petroleum coke does not impact the cambered rod and the vibration component. This reciprocating process causes the vibration component to vibrate, and the vibrating vibration component achieves the separation effect of the adhered petroleum coke. Anti-adhesion of petroleum coke: The liquid is received through the elastic air pipe and discharged through the elastic airbag to spray the liquid on the separated petroleum coke, and the petroleum coke and the liquid are fully mixed through the elastic component; Pressurization and decompression of petroleum coke: air containing super-concentrated oxygen is received through the curved air pipe, and the air containing super-concentrated oxygen is continuously discharged into the shell through the hollow block, positioning tube and filter assembly, thereby increasing the air pressure inside the shell, allowing the oxygen in the air to more fully contact the petroleum coke, accelerating the oxidation reaction in the subsequent calcination process. As the air pressure inside the shell reaches the specified value, the hollow block and the curved air pipe receive suction, thereby releasing the air pressure inside the shell, restoring the air pressure inside the shell to normal, and entering the calcining furnace for calcination.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A petroleum coke high-efficiency calcining furnace, characterized in that: include: Calcination furnace (1); A pretreatment mechanism (2), the pretreatment mechanism (2) comprising a housing (21) fixedly connected to the upper end surface of the calcining furnace (1), a heat insulation frame (24) fixedly connected to the lower position inside the housing (21); A separation mechanism (3), the separation mechanism (3) comprising a curved rod (31) slidably connected to the top of the housing (21), rebound components (32) being arranged on both sides of the bottom of the curved rod (31) in the length direction, vibration components (33) being arranged obliquely on both sides of the length direction of the curved rod (31), and a plurality of recoil components (34) being arranged at the bottom of the curved rod (31) and located at the rebound component (32); A spraying mechanism (4), the spraying mechanism (4) comprising a curved air pipe (41) fixedly connected to the top center position of a heat insulation frame (24), the bottom of the curved air pipe (41) being fixedly connected to a hollow block (42), a plurality of rebound components (43) being arranged in a linear array between both sides of the curved air pipe (41) and the inner walls of both sides of the heat insulation frame (24), at least one elastic air pipe (44) being arranged at the bottom of each rebound component (43), and a plurality of positioning tubes (47) and filter components (48) being arranged in a rectangular array on both sides of the hollow block (42).

2. A petroleum coke high-efficiency calcining furnace according to claim 1, characterized in that: The gas output end of the calcining furnace (1) is fixedly connected to an exhaust pipe (11), and the solid output end of the calcining furnace (1) is fixedly connected to a discharge pipe (12); A controller is installed on the side of the shell (21); a feed pipe (22) is fixedly connected to the upper end surface of the shell (21); a first solenoid valve (23) is installed on the body of the feed pipe (22), and the first solenoid valve (23) is electrically connected to the controller; at least one heater (25) is fixedly connected to the inner wall of the heat insulation frame (24), and the heater (25) is electrically connected to the controller; a hollow funnel (26) is fixedly connected to the inner bottom of the heat insulation frame (24); a plurality of air holes (261) are provided on the inner inclined surfaces around the hollow funnel (26); a connecting pipe (27) is fixedly connected to the top of the hollow funnel (26); a side of the hollow block (42) away from the arc-surface air pipe (41) is fixedly connected to the connecting pipe (27); a second solenoid valve (28) is fixedly connected to the outlet of the hollow funnel (26), and the second solenoid valve (28) is electrically connected to the controller.

3. A petroleum coke high-efficiency calcining furnace according to claim 1, characterized in that: The rebound component (32) comprises a plurality of first springs (321) fixedly connected to the bottom of the cambered rod (31); the other end of the first spring (321) is fixedly connected to a fixing plate (322); and the fixing plate (322) is fixedly connected to the inner wall of the outer shell (21) on one side thereof close to the inner wall of the outer shell (21); The vibration component (33) comprises a fixing frame (331) fixedly connected at an angle to the side of the arc surface rod (31), a plurality of arc surface elastic rods (332) being fixedly connected in a linear array inside the fixing frame (331), and a vibration sheet (333) being fixedly connected at an angle to the side of the arc surface elastic rod (332) away from the arc surface; The recoil assembly (34) comprises an elastic rod (341) fixedly connected to the bottom of the cambered rod (31), and the other end of the elastic rod (341) is fixedly connected to a weighted ball (342).

4. A petroleum coke high-efficiency calcining furnace according to claim 1, characterized in that: The input end of the arc-surface air pipe (41) is fixedly connected to an interconnecting pipe (411); The rebound component (43) comprises a fixed rod (431) fixedly connected to a side surface of the arc-surface air tube (41); the other side of the fixed rod (431) is fixedly connected to an inner wall of a heat insulation frame (24); a rod body of the fixed rod (431) is fixedly connected to at least two resonance sleeves (432) in a linear array; the bottom of the resonance sleeve (432) is fixedly connected to an elastic air tube (44); and the other end of the elastic air tube (44) is fixedly connected to an air distribution pipe (49).

5. A petroleum coke high-efficiency calcining furnace according to claim 1, characterized in that: The elastic air tube (44) has a plurality of elastic air bags (45) fixedly connected to the tube body in a linear array, the outer peripheral surface of the elastic air bag (45) is provided with a plurality of inclined nozzles (451) in an annular array, and the outer peripheral surface of the elastic air bag (45) is provided with a plurality of elastic components (46) in an annular array, and the elastic components (46) and the inclined nozzles (451) are arranged alternately.

6. A petroleum coke high-efficiency calcining furnace according to claim 5, characterized in that: The elastic component (46) comprises a connecting plate (461) fixedly connected to the outer peripheral surface of the elastic airbag (45), a plurality of elastic blocks (462) being fixedly connected from top to bottom on opposite sides of the connecting plate (461), a plurality of flexible plates (463) being fixedly connected in a common linear array on the other side of each of the elastic blocks (462), and a plurality of partition rods (464) being fixedly connected in a common linear array on the other side of each of the flexible plates (463).

7. A petroleum coke high-efficiency calcining furnace according to claim 2, characterized in that: The positioning tube (47) is fixedly connected to the hollow block (42); the number and position of the filter assembly (48) and the positioning tube (47) correspond one to one; the filter assembly (48) comprises a plurality of second springs (483) fixedly connected to the side of the hollow block (42) in a circular array with the positioning tube (47) as the center; a fixing plate (482) is fixedly connected to the other side of the second spring (483); each fixing plate (482) is fixedly connected to a fixing ring (481) on the opposite side; a sealing ring (486) is fixedly connected to the edge of the fixing ring (481) facing the positioning tube (47); a filter screen (487) is fixedly connected to the inner circumference of the fixing ring (481); a side of the filter screen (487) away from the positioning tube (47) is fixedly connected to an elastic telescopic rod (484); and a gas collecting hood (485) is fixedly connected to the telescopic end of the elastic telescopic rod (484).

8. A petroleum coke high-efficiency calcining furnace according to claim 4, characterized in that: The invention also comprises a gas supply and liquid supply mechanism (5), the gas supply and liquid supply mechanism (5) comprising a compressed gas box (51), an exhaust fan (52) and a liquid storage box (54) fixedly connected to the side of the calcining furnace (1), and the compressed gas box (51), the exhaust fan (52) and the liquid storage box (54) are all electrically connected to the controller, the housing (21) is located on the side of the arc-surface gas pipe (41) and is fixedly connected to a gas mixing valve (53), the gas mixing valve (53) having two input ends and one output end, the other side of the interconnecting pipe (411) passes through the housing (21) and is fixedly connected to the output end of the gas mixing valve (53), and the gas mixing valve (53) is electrically connected to the controller.

9. A petroleum coke high-efficiency calcining furnace according to claim 8, characterized in that: The output end of the compressed gas box (51) is fixedly connected to a gas metering controller (511), the output end of the gas metering controller (511) is fixedly connected to a first gas pipe (512), the other end of the first gas pipe (512) is fixedly connected to one of the input ends of the gas mixing valve (53), the output end of the suction and exhaust fan (52) is fixedly connected to a second gas pipe (521), the other end of the second gas pipe (521) is fixedly connected to the other input end of the gas mixing valve (53), the output end of the liquid storage tank (54) is fixedly connected to a branch pipe (541), the branch pipe (541) is composed of a main pipe and a plurality of branch pipes, the main pipe is connected to the liquid storage tank (54), the number of the branch pipes corresponds to that of the gas branch pipe (49), and they are connected to each other.

10. A method for a petroleum coke high-efficiency calcining furnace, used in the petroleum coke high-efficiency calcining furnace according to any one of claims 1 to 9, characterized in that: The method comprises: separation of sticky petroleum coke, anti-sticking of petroleum coke, and pressurization and depressurization of petroleum coke, specifically: Separation of adhered petroleum coke: First, the adhered petroleum coke enters the housing (21) through the feed pipe (22) and is separated into two parts under the action of the cambered rod (31), so that the adhered petroleum coke contacts the vibration components (33) on both sides. Since the adhered petroleum coke is a free fall when entering the housing (21), when the adhered petroleum coke contacts the cambered rod (31) and the vibration component (33), it will cause an impact on the cambered rod (31) and the vibration component (33), thereby generating a downward pressure. As the cambered rod (31) and the vibration component (33) are pressed downward, the rebound component (32) is squeezed. Since the impact caused by the adhered petroleum coke is intermittent, when the adhered petroleum coke does not impact the cambered rod (31) and the vibration component (33), the rebound component (32) restores the cambered rod (31) and the vibration component (33) to their initial positions, and the vibration component (33) vibrates in this way. The vibrating vibration component (33) achieves the effect of separating the adhered petroleum coke. Anti-adhesion of petroleum coke: the liquid is received by the elastic air pipe (44) and discharged through the elastic air bag (45) so as to spray the liquid on the separated petroleum coke, and the petroleum coke and the liquid are fully mixed through the elastic component (46); Pressurization and depressurization of petroleum coke: air containing super-concentrated oxygen is received through the curved air pipe (41), and the air containing super-concentrated oxygen is continuously discharged into the shell (21) through the hollow block (42), the positioning tube (47) and the filter assembly (48), thereby increasing the air pressure inside the shell (21), allowing the oxygen in the air to more fully contact the petroleum coke, thereby accelerating the oxidation reaction in the subsequent calcination process. As the air pressure inside the shell (21) reaches a specified value, the hollow block (42) and the curved air pipe (41) receive suction, thereby releasing the air pressure inside the shell (21), so that the air pressure inside the shell (21) returns to normal, and enters the calcining furnace (1) for calcination.

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