Tank-type calcining furnace based on heat circulation

Abstract

The invention relates to the technical field of calcining furnaces, and discloses a pot-type calcining furnace based on heat circulation, the pot-type calcining furnace comprises a calcining assembly, the calcining assembly comprises a furnace body, the furnace body is internally provided with an adjusting assembly and a detection assembly, the detection assembly is arranged below the adjusting assembly, the adjusting assembly comprises a stirring rod, and the stirring rod is arranged below the furnace body. And the stirring rod is arranged at the central position of the furnace body. The discharging amount is controlled according to the detection result of the temperature sensor, so that it is guaranteed that the actual heat of the calcination space meets the calcination heat needed by the materials, the higher the detection result of the temperature sensor is, the larger the needed discharging amount is, the more volatile gas is generated when the petroleum coke materials are calcined, and the more volatile gas is generated. The smaller the amount of volatile gas entering the vent pipe at the position is, the temperature deviation is automatically adjusted and corrected under the action of heat transfer, the uniformity and stability of the temperature in the calcining furnace are ensured, and the calcining quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of calcining furnaces, in particular to a pot-type calcining furnace based on heat circulation. Background Art

[0002] The tank calcining furnace is a key equipment for calcining carbon raw materials. When calcining petroleum coke materials, the raw petroleum coke materials are added into the material tank through the feeding mechanism on the top of the tank furnace. After indirect heating by the fire channel, the moisture and part of the volatile gas in the raw materials are discharged through the preheating zone. After calcination in the high temperature zone of 1250℃-1350℃, the petroleum coke materials release a large amount of volatile gas, resulting in volume shrinkage, and the density, strength and conductivity are improved. Finally, the qualified petroleum coke material products are discharged after being cooled by the cooling water jacket.

[0003] A Chinese patent with application number 2021206725289 discloses an energy-saving downstream pot calciner, comprising a downstream calciner main body, wherein fire channels are evenly and sequentially opened on the inner layer of the downstream calciner main body, and the downstream calciner main body is equipped with two calcining pots at the inner layer. The device adds a cooling mechanism at the discharge end of the calcining pot part of the downstream calciner main body, which can not only achieve a cooling effect but also complete continuous heat conversion. However, the calcination temperature in the furnace body is uneven, which affects the calcination effect.

[0004] A Chinese patent application numbered 2017206724063 discloses a tank-type calcining furnace, comprising a tank body and a plurality of partitions arranged in the tank body, wherein the inner cavity of the tank body is divided into multiple layers of fire channels by the partitions, wherein an auxiliary fuel supply device and a temperature control device are arranged in at least one layer of the fire channel, wherein the temperature control device is used to detect the temperature in the corresponding fire channel, and the device adjusts the supply amount of the auxiliary fuel supplied by the auxiliary fuel supply device according to the detected temperature, but the petroleum coke material is prone to accumulate, stick and agglomerate during calcination, which affects heat transfer.

[0005] Furthermore, in the above-mentioned prior art, during the calcination of the petroleum coke material, since the internal temperature of the furnace body 101 is relatively low at the beginning and the calcination temperatures at different heights of the furnace body are different, the calcination reaction is incomplete, resulting in the inability of the volatile gases in the petroleum coke material to fully escape, thereby failing to fully utilize the volatile gases; and since the direction of heat transfer is from the outer surface of the furnace body to the center of the furnace body, the closer to the center of the furnace body, the lower the temperature, the uneven temperature distribution inside the furnace body causes uneven calcination quality; and the prior art cannot monitor in real time whether there is a problem of uneven temperature distribution inside the furnace body, and cannot adjust and correct the temperature deviation in time, which affects the uniformity and stability of the temperature inside the calcining furnace, and the calcination quality is poor.

[0006] In view of this, the present invention proposes a pot-type calcining furnace based on heat circulation. Summary of the invention

[0007] In view of the above problems, the present invention provides a pot-type calcining furnace based on heat circulation to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a pot-type calcining furnace based on heat circulation, comprising a calcining assembly, the calcining assembly comprising a furnace body, an adjusting assembly and a detecting assembly are arranged inside the furnace body, and the detecting assembly is arranged below the adjusting assembly;

[0009] The adjustment component includes a stirring rod, which is arranged at the center of the furnace body. A driving motor is installed below the stirring rod. A baffle is arranged on the surface of the stirring rod. A rotating drum is arranged above the baffle. An adjustment plate is arranged at the end of the rotating drum away from the baffle. A ventilation pipe is arranged through the surface of the baffle.

[0010] Preferably, the detection component includes a detection leaf, which is arranged on the stirring rod. A placement groove is opened inside the detection leaf, an elastic sleeve is arranged inside the placement groove, a push rod is arranged on the surface of the elastic sleeve, and an adjustment head is arranged at one end of the push rod away from the elastic sleeve.

[0011] Preferably, there are multiple push rods, and the multiple push rods are arranged on the detection leaf at intervals. A limiting groove is provided at the position where the push rod is connected to the detection leaf, and the adjustment head is conical.

[0012] Preferably, a fixing sleeve is provided on the inner wall of the furnace body, a groove is provided at the position where the fixing sleeve is connected to the baffle, cylinders are provided on both sides of the fixing sleeve, and a clamping plate is provided at one end of the cylinder away from the fixing sleeve.

[0013] Preferably, a vent is provided on the surface of the ventilation pipe, a fixing seat is provided inside the ventilation pipe, a telescopic spring is provided on the surface of the fixing seat, a conical top is provided at one end of the telescopic spring away from the fixing seat, a limiting plate adapted to the vent is provided below the conical top, and a slot is provided at one end of the conical top close to the ventilation pipe.

[0014] Preferably, an adjustment groove is provided at one end of the vent pipe away from the conical top, an adjustment frame is provided inside the adjustment groove, adjustment strips are provided on both sides of the adjustment frame, and a movable groove adapted to the adjustment strip is provided on the inner wall of the vent pipe;

[0015] An elastic spring is arranged on the surface of the adjusting frame, and one end of the elastic spring away from the adjusting frame is fixedly connected to the adjusting slot.

[0016] Preferably, a rotation groove is provided at the position where the baffle plate is connected to the rotating drum, and one end of the rotating drum away from the baffle plate is fixedly connected to the adjustment plate;

[0017] A material discharge trough is provided on the surface of the baffle plate, a mounting hole is provided at a position where the baffle plate is connected to the vent pipe, and the vent pipe is fixedly arranged in the mounting hole.

[0018] Preferably, a guide frame is provided at one end of the adjustment plate close to the baffle, a plurality of movable grooves are provided on the surface of the adjustment plate, an annular plate is provided above the movable grooves, the annular plate is provided on the ventilation pipe, and an annular groove matching the annular plate is provided at one end of the adjustment plate away from the baffle.

[0019] Preferably, a feed hopper is provided above the furnace body, a discharge hopper is provided at one end of the furnace body away from the feed hopper, a feeder is installed above the feed hopper, an exhaust duct is provided on one side of the furnace body, the exhaust duct is connected to the furnace body, and an induced draft fan is installed on the exhaust duct.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention controls the material discharge amount through the detection result of the temperature sensor, so as to ensure that the actual heat of the calcination space meets the calcination heat required by the material. The higher the detection result of the temperature sensor, the greater the required material discharge amount, and the more volatile gas generated by the petroleum coke material during calcination, and the smaller the amount of volatile gas entering the ventilation pipe at this position. Under the action of heat transfer, the temperature deviation is automatically adjusted and corrected to ensure the uniformity and stability of the temperature inside the calciner and improve the calcination quality.

[0022] 2. The present invention cooperates with other structures such as an elastic sleeve, a push rod, an adjusting head and a vent pipe. Under the effect of thermal expansion and contraction of the gas in the elastic sleeve, the length of the adjusting head extending into the vent pipe is controlled to change the amount of volatile gas entering the vent pipe, so that the volatile gas at a high temperature position is mixed with the volatile gas at a low temperature position to achieve the purpose of temperature compensation. At the same time, the adjusting head pushes the adjusting frame to make the adjusting strip block the vent, thereby reducing the vent, increasing the speed of the volatile gas ejecting from the vent, improving the turbulence intensity of the gas at this position, and optimizing the overall heat transfer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0025] Figure 3 It is a schematic diagram of the use scenario of the overall structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the local structure of the stirring rod of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the detection leaf structure of the present invention;

[0028] Figure 6 It is a partial cross-sectional schematic diagram of the fixing sleeve structure of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified image of point A;

[0030] Figure 8 This is a schematic diagram of the assembly structure of the baffle and the adjustment plate of the present invention;

[0031] Fig. 9 This is an exploded schematic diagram of the regulating assembly structure of the present invention;

[0032] Fig.10 It is a schematic diagram of the ventilation pipe structure of the present invention;

[0033] Fig.11 It is a cross-sectional schematic diagram of the ventilation pipe structure of the present invention;

[0034] Fig.12 For the present invention Fig.11 The enlarged view of point B;

[0035] Fig.13 For the present invention Fig.11 Enlarged view of point C.

[0036] In the figure: 1. calcining assembly; 101. furnace body; 102. feed hopper; 103. discharge hopper; 104. exhaust duct; 2. adjustment assembly; 201. stirring rod; 202. baffle; 2021. discharge chute; 2022. mounting hole; 203. drum; 204. adjustment plate; 2041. guide frame; 2042. movable groove; 2043. annular plate; 205. fixing sleeve; 206. cylinder; 207. clamping plate; 208. vent pipe; 2081. vent; 209. fixing seat; 210. telescopic spring; 211. conical top; 212. limit plate; 213. adjustment frame; 214. adjustment strip; 215. elastic spring; 3. detection assembly; 301. detection leaf; 302. placement groove; 303. elastic sleeve; 304. ejector rod; 305. adjustment head. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0038] Example 1

[0039] like Figures 1 to 13 As shown, this embodiment discloses a pot-type calcining furnace based on heat circulation, including a calcining component 1, the calcining component 1 includes a furnace body 101, and an adjusting component 2 and a detecting component 3 are arranged inside the furnace body 101, and the detecting component 3 is arranged below the adjusting component 2.

[0040] like Figure 2 As shown, a feed hopper 102 is provided above the furnace body 101, a discharge hopper 103 is provided at one end of the furnace body 101 away from the feed hopper 102, a feeder is installed above the feed hopper 102, and the feeder is provided to transport petroleum coke materials to the inside of the furnace body 101, an exhaust duct 104 is provided on one side of the furnace body 101, the exhaust duct 104 is connected to the furnace body 101, and an induced draft fan is installed on the exhaust duct 104, and the volatile gas generated by the calcination of the petroleum coke material is discharged from the furnace body 101 through the cooperation of the induced draft fan and the exhaust duct 104.

[0041] like Figure 4 , Figure 8 As shown, the adjustment component 2 includes a stirring rod 201, which is arranged at the center of the furnace body 101, a driving motor is installed below the stirring rod 201, a baffle 202 is arranged on the surface of the stirring rod 201, a rotating drum 203 is arranged above the baffle 202, an adjustment plate 204 is arranged at the end of the rotating drum 203 away from the baffle 202, a rotating groove is provided at the position where the baffle 202 and the rotating drum 203 are connected, the end of the rotating drum 203 away from the baffle 202 is fixedly connected to the adjustment plate 204, a discharge trough 2021 is provided on the surface of the baffle 202, and a flow guide frame 2041 is provided at the end of the adjustment plate 204 close to the baffle 202.

[0042] like Figure 6 , Figure 7 As shown, a fixing sleeve 205 is provided on the inner wall of the furnace body 101, a groove is provided at the position where the fixing sleeve 205 is connected to the baffle 202, cylinders 206 are provided on both sides of the fixing sleeve 205, and a clamping plate 207 is provided at one end of the cylinder 206 away from the fixing sleeve 205, and the movement state of the adjusting plate 204 is controlled by cooperating with the cylinder 206 and the clamping plate 207.

[0043] In actual use, the pot calcining furnace is composed of a plurality of walls made of refractory materials and a vertically arranged calcining assembly 1. Generally, four pot calcining furnaces are grouped together (such as Figure 3As shown), different numbers of groups are set according to the requirements of configuration and production capacity to meet production needs, and a heating fire channel is set inside the wall, so that the flue gas indirectly heats the material in the furnace body 101. Specifically, the petroleum coke material to be calcined is transported to the feed hopper 102 by a feeder, and then the petroleum coke material inside the furnace body 101 is calcined under the action of heat transfer. In this process, the volatile gas generated when the petroleum coke material is calcined in the furnace body 101 is discharged and collected through the exhaust pipe 104 under the action of the induced draft fan, and then the collected volatile gas is sent to the fire channel according to the actual situation of the furnace body 101 and mixed with the combustion-supporting air for combustion, thereby providing continuous heat for the furnace body 101. This heat circulation method enables the pot-type calcining furnace to fully utilize the volatile gas in the petroleum coke material raw material during the calcination process and reduce energy consumption. This method not only fully utilizes the calorific value of the volatile gas, but also reduces environmental pollution. Finally, the calcined petroleum coke material is discharged through the discharge hopper 103 after cooling.

[0044] During the calcining process, the driving motor drives the stirring rod 201 and the baffle plate 202 to rotate together, and since the adjusting plate 204 is connected to the baffle plate 202 through the rotating drum 203, the baffle plate 202 drives the rotating drum 203 and the adjusting plate 204 to move together. At this time, the baffle plate 202 and the adjusting plate 204 rotate synchronously, so that the petroleum coke material passes through the guide frame 2041 on the adjusting plate 204 and falls from the discharge chute 2021 on the baffle plate 202, so as to achieve the purpose of uniform discharge of the petroleum coke material. In addition, in order to improve the calcining efficiency and product quality, it is necessary to adjust the discharge amount of the petroleum coke material. Specifically, the controller controls the extension of the two cylinders 206 at the same time, and the cylinder 206 drives the clamping plate 207 to move in the direction close to the adjusting plate 204, so that the clamping plate 207 contacts and squeezes the adjusting plate 204, so that the adjusting plate The section plate 204 stops rotating, and the drum 203 stops rotating along with the adjusting plate 204. At this time, the baffle 202 still rotates along with the stirring rod 201. The rotation angle of the baffle 202 at this time can be calculated according to the rotation speed of the driving motor and the time when the adjusting plate 204 stops rotating. At this time, the overlapping part of the guide frame 2041 on the adjusting plate 204 and the discharge groove 2021 on the surface of the baffle 202 is the discharge port, that is, the area of ​​the overlapping part is the discharge amount of the discharge port at this time. After the adjustment is completed, the controller controls the two cylinders 206 to contract, so that the cylinder 206 pulls the clamping plate 207 and moves the clamping plate 207 away from the adjusting plate 204. At this time, the adjusting plate 204 resumes rotating, and the adjusting plate 204 and the baffle 202 are in a relatively static state, that is, under the action of the synchronous rotation of the adjusting plate 204 and the baffle 202, the purpose of uniform discharge is achieved.

[0045] Example 2

[0046] During the calcination of petroleum coke materials, since the temperature inside the furnace body 101 is relatively low at the beginning and the calcination temperatures at different heights of the furnace body 101 are different, the calcination reaction is incomplete, resulting in the inability of the volatile gases in the petroleum coke materials to fully escape, thereby failing to fully utilize the volatile gases; and since the direction of heat transfer is from the outer surface of the furnace body 101 to the center of the furnace body 101, the closer to the center of the furnace body 101, the lower the temperature, the uneven temperature distribution inside the furnace body 101 causes uneven calcination quality; and the existing method cannot monitor in real time whether there is a problem of uneven temperature distribution inside the furnace body 101, and cannot adjust and correct the temperature deviation in time, which affects the uniformity and stability of the temperature inside the calciner, and the calcination quality is poor. For this reason, we propose the following improvement plan:

[0047] like Figure 8 , Fig. 9 As shown, a vent pipe 208 is provided through the surface of the baffle plate 202 , and a mounting hole 2022 is provided at the position where the baffle plate 202 and the vent pipe 208 are connected, and the vent pipe 208 is fixedly disposed in the mounting hole 2022 .

[0048] A plurality of movable grooves 2042 are formed on the surface of the adjusting plate 204 , an annular plate 2043 is disposed above the movable grooves 2042 , the annular plate 2043 is disposed on the vent pipe 208 , and an annular groove matching the annular plate 2043 is formed at one end of the adjusting plate 204 away from the baffle 202 .

[0049] It is worth noting that there are multiple active grooves 2042, and the area of ​​the active grooves 2042 increases from the center of the circle to the outside along the radius direction of the adjustment plate 204. There are multiple annular plates 2043, and the annular plates 2043 are semicircular rings. The diameter of the annular plates 2043 increases from the center of the circle to the outside along the radius direction of the adjustment plate 204, and the annular plates 2043 correspond to the active grooves 2042 one by one (such as Fig. 9 As shown), by providing an annular plate 2043, the petroleum coke material is prevented from accumulating inside the movable groove 2042 and affecting the material discharge.

[0050] like Figures 10 to 13 As shown, a vent 2081 is provided on the surface of the vent pipe 208, a fixed seat 209 is provided inside the vent pipe 208, a telescopic spring 210 is provided on the surface of the fixed seat 209, a conical top 211 is provided at one end of the telescopic spring 210 away from the fixed seat 209, a limiting plate 212 adapted to the vent 2081 is provided below the conical top 211, a slot is provided at one end of the conical top 211 close to the vent pipe 208, and the conical top 211 is provided to prevent petroleum coke material from directly falling into the vent pipe 208 and causing blockage.

[0051] An adjustment groove is provided at one end of the vent pipe 208 away from the conical top 211, an adjustment frame 213 is provided inside the adjustment groove, and adjustment strips 214 are provided on both sides of the adjustment frame 213. A movable groove adapted to the adjustment strip 214 is provided on the inner wall of the vent pipe 208, and an elastic spring 215 is provided on the surface of the adjustment frame 213. The end of the elastic spring 215 away from the adjustment frame 213 is fixedly connected to the adjustment groove.

[0052] like Figure 4 , Figure 5 As shown, the detection component 3 includes a detection leaf 301, which is arranged on the stirring rod 201. A placement groove 302 is provided inside the detection leaf 301, and an elastic sleeve 303 is provided inside the placement groove 302. A push rod 304 is provided on the surface of the elastic sleeve 303, and an adjusting head 305 is provided at one end of the push rod 304 away from the elastic sleeve 303. There are multiple push rods 304, and multiple push rods 304 are arranged at intervals on the detection leaf 301. A limiting groove is provided at the position where the push rod 304 is connected to the detection leaf 301, and the adjusting head 305 is conical.

[0053] It is worth noting that since gas is arranged inside the elastic sleeve 303, the gas has the property of thermal expansion and contraction. If the temperature rises, the gas inside the elastic sleeve 303 expands when it encounters heat, causing the volume of the elastic sleeve 303 to increase, and pushes the push rod 304 to extend out of the detection leaf 301, so that the push rod 304 drives the adjustment head 305 to move away from the elastic sleeve 303.

[0054] During the actual calcination process of the furnace body 101, since a plurality of baffles 202 are arranged on the stirring rod 201, the baffles 202 divide the furnace body 101 into a plurality of calcination spaces, that is, a calcination space is formed between two adjacent baffles 202. By arranging a plurality of temperature sensors on the furnace body 101, and the temperature sensors correspond to the positions of the calcination spaces one by one, the actual calcination temperatures of the calcination spaces at different heights of the furnace body 101 are detected in real time by the temperature sensors, and then the discharge amount is controlled according to the detection result of the temperature sensor, so as to ensure that the actual heat of the calcination space meets the calcination heat required by the material. The higher the detection result of the temperature sensor, the greater the required discharge amount, and the greater the discharge amount, the more volatile gas generated by the petroleum coke material during calcination. It is worth noting that a discharge trough 2021 is opened on the surface of the baffle 202, and the discharge trough 2021 increases in radial proportion from the center of the baffle 202 to the outside (such as Figure 8As shown), and the guide frame 2041 is matched with the material discharge trough 2021, which indicates that the overlapping part of the guide frame 2041 on the adjustment plate 204 and the material discharge trough 2021 on the surface of the baffle 202 also increases in equal proportion from the center of the baffle 202 to the outside in radial direction, that is, the material discharge amount also increases in equal proportion from the center of the baffle 202 to the outside in radial direction, that is, the material discharge amount close to the center of the furnace body 101 is less than the material discharge amount far from the center of the furnace body 101, so that the material discharge is uniform, and the petroleum coke material is prevented from accumulating in the center of the furnace body 101. In addition, since the direction of heat transfer is from the outer surface of the furnace body 101 to the center of the furnace body 101, the closer to the center of the furnace body 101, the lower the temperature, resulting in poor calcination quality of the petroleum coke material at the center of the furnace body 101. In the actual calcination process, in order to solve this problem, the following are specifically performed:

[0055] First, the actual calcination temperature of the calcination space at different heights of the furnace body 101 is detected in real time by the temperature sensor, and then the material discharge amount of the calcination space is controlled according to the detection result of the temperature sensor. If the detection result of the temperature sensor is higher, it indicates that the required material discharge amount is larger at this time. In order not to waste heat, the material discharge amount is increased at this time, and the controller controls the two cylinders 206 to extend at the same time. The cylinder 206 drives the clamping plate 207 to move toward the direction close to the adjustment plate 204, so that the clamping plate 207 contacts and squeezes the adjustment plate 204, so that the adjustment plate 204 stops rotating. At this time, the baffle plate 202 still rotates with the stirring rod 201. The baffle plate 202 at this time can be calculated according to the speed of the driving motor and the time when the adjustment plate 204 stops rotating. The rotation angle of the plate 202 increases the overlapping area of ​​the guide frame 2041 on the adjusting plate 204 and the material discharge groove 2021 on the surface of the baffle 202. During this process, the air pipes 208 at different positions on the baffle 202 drive the annular plate 2043 to rotate along the annular groove on the adjusting plate 204, and the position of the air pipes 208 in the movable groove 2042 changes. After the adjustment is completed, the controller controls the two cylinders 206 to contract, so that the cylinders 206 pull the clamping plate 207 and move the clamping plate 207 away from the adjusting plate 204. At this time, the adjusting plate 204 resumes rotation, that is, uniform material discharge is achieved under the action of the synchronous rotation of the adjusting plate 204 and the baffle 202. At this time, the position of the air pipe 208 in the movable groove 2042 remains unchanged.

[0056] It is worth mentioning that in the above process, when adjusting the material discharge amount, in order to avoid the ventilation pipe 208 being stuck in the extreme position of the movable groove 2042, the controller flexibly controls the driving motor to rotate forward or reverse, and flexibly adjusts the required material discharge amount, which will not be elaborated here.

[0057] By increasing the amount of material discharged into the calcining space, the volatile gas generated by the petroleum coke material during calcination increases. Since the amount of material discharged increases in equal proportion from the center of the baffle 202 to the outside in the radial direction, that is, the amount of material discharged near the center of the furnace body 101 is less than the amount of material discharged far from the center of the furnace body 101, and the temperature near the center of the furnace body 101 is lower than the temperature far from the center of the furnace body 101, the amount of volatile gas near the center of the furnace body 101 is less than the amount of volatile gas far from the center of the furnace body 101, and the volatile gas at different positions enters the passage at different positions. The volatile gas is discharged from the vent 2081 inside the gas pipe 208. Since the volatile gas itself also has heat, the higher the temperature near the center of the furnace body 101 under the action of heat transfer, the temperature difference at different positions of the calcination space will be aggravated. That is, the temperature near the center of the furnace body 101 is much lower than the temperature far from the center of the furnace body 101, which affects the calcination quality of petroleum coke. In order to solve this problem, the actual calcination temperature at different positions is detected by the detection component 3, and the amount of volatile gas discharged from the vent pipe 208 at different positions is adjusted according to the detection result. Specifically,

[0058] Since the detection leaf 301 moves with the stirring rod 201, that is, the detection leaf 301 rotates synchronously with the baffle 202, at this time, the adjustment head 305 on the detection leaf 301 is located below the ventilation pipe 208, and multiple adjustment heads 305 correspond to multiple ventilation pipes 208 one by one. At this time, the gas in the elastic sleeve 303 expands when heated, the volume of the elastic sleeve 303 increases and pushes the push rod 304 to extend out of the detection leaf 301, increasing the length, so that the push rod 304 drives the adjustment head 305 to move away from the elastic sleeve 303. In this process, the adjustment head 305 moves to the inside of the ventilation pipe 208, and since the adjustment head 305 is conical, the longer the length of the adjustment head 305 extending into the ventilation pipe 208, the smaller the gap between the adjustment head 305 and the ventilation pipe 208, and the less volatile gas is discharged from this position. The higher the temperature is, the more volatile gas discharged from the vent pipe 208 near the center of the furnace body 101 is greater than the volatile gas discharged from the vent pipe 208 far from the center of the furnace body 101. The volatile gas discharged from the vent pipe 208 farther away from the center of the furnace body 101 is less, so that the volatile gas at this position moves toward the center of the furnace body 101 for heat exchange, and the volatile gas at the high temperature position is mixed with the volatile gas at the low temperature position to achieve the purpose of temperature compensation. At the same time, since the baffle 202 and the detection leaf 301 rotate together with the stirring rod 201, the volatile gas generated in the calcination space is stirred, the heat exchange effect in the calcination space is improved, and the heat of the volatile gas itself is fully utilized, without additionally increasing the combustion amount of the combustion material to increase the fire channel temperature at the calcination space.

[0059] At the same time, when the vent pipe 208 is extended into the vent pipe 208, the adjusting head 305 pushes the adjusting frame 213 and the adjusting strip 214 to move in the direction close to the conical top 211. During this process, the elastic spring 215 is compressed, and the adjusting strip 214 moves and blocks the vent port 2081, thereby reducing the ventilation size of the vent port 2081. When the volatile gas enters the interior of the vent pipe 208 from the gap enclosed by the adjusting head 305 and the vent pipe 208, and under the action of the telescopic spring 210, the turbulence of the volatile gas inside the vent pipe 208 is enhanced, thereby increasing the ejection speed of the volatile gas, thereby spraying the petroleum coke material above the adjusting plate 204, increasing the turbulence intensity of the gas at this position, optimizing the heat transfer effect, and preventing the petroleum coke material from adhering to the adjusting plate 204.

[0060] In addition, by providing a conical top 211, the petroleum coke material is prevented from falling directly into the interior of the vent pipe 208 to cause blockage, and the petroleum coke material is reduced from adhering to the conical top 211. Since the petroleum coke material above the adjustment plate 204 will hit the conical top 211 when it falls, the conical top 211 will collide with the falling material to disperse it, thereby increasing the contact area between heat and the material and improving the heat transfer efficiency. This effectively solves the problem that the petroleum coke material is prone to accumulate, stick together and agglomerate during calcination, and the large agglomerate volume not only easily leads to blockage of material discharge but also affects heat transfer.

[0061] When the petroleum coke material falls and collides with the conical top 211, the telescopic spring 210 is compressed, so that the conical top 211 drives the limiting plate 212 to move toward the direction close to the vent pipe 208, thereby reducing the impact force on the conical top 211 and the vent pipe 208. The conical top 211 that is not impacted is reset under the action of the telescopic spring 210. During this process, the conical top 211 drives the limiting plate 212 to slide along the vent 2081, so that the limiting plate 212 can scrape off impurities at the vent 2081 to prevent the impurities contained in the volatile gas from clogging the vent 2081 for a long time.

[0062] At the same time, since the impurities contained in the volatile gas will adhere to the inner wall of the vent pipe 208 or the surface of the telescopic spring 210, and in the above process, the telescopic spring 210 is deformed, and the telescopic spring 210 reciprocates along the vent pipe 208 in the vertical direction, so that the telescopic spring 210 can scrape and clean the impurities adhered to the inner wall of the vent pipe 208, and the elastic deformation of the telescopic spring 210 itself can achieve self-cleaning, and under the action of the telescopic spring 210, the turbulence of the volatile gas inside the vent pipe 208 is enhanced, and the flow velocity of the volatile gas is used to impact the telescopic spring 210 and the inner wall of the vent pipe 208, thereby accelerating the cleaning of impurities.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pot-type calcining furnace based on heat circulation, comprising a calcining assembly (1), wherein the calcining assembly (1) comprises a furnace body (101), characterized in that: an adjusting assembly (2) and a detecting assembly (3) are arranged inside the furnace body (101), and the detecting assembly (3) is arranged below the adjusting assembly (2); The adjustment component (2) comprises a stirring rod (201), wherein the stirring rod (201) is arranged at the center of the furnace body (101), a driving motor is installed below the stirring rod (201), a baffle (202) is arranged on the surface of the stirring rod (201), a rotating drum (203) is arranged above the baffle (202), an adjustment plate (204) is arranged at one end of the rotating drum (203) away from the baffle (202), and a ventilation pipe (208) is arranged through the surface of the baffle (202).

2. A pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: The detection component (3) comprises a detection leaf (301), the detection leaf (301) is arranged on the stirring rod (201), a placement groove (302) is provided inside the detection leaf (301), an elastic sleeve (303) is provided inside the placement groove (302), a push rod (304) is provided on the surface of the elastic sleeve (303), and an adjustment head (305) is provided at one end of the push rod (304) away from the elastic sleeve (303).

3. A pot-type calcining furnace based on heat circulation according to claim 2, characterized in that: There are a plurality of push rods (304), and the plurality of push rods (304) are arranged at intervals on the detection leaf (301). A limiting groove is provided at the position where the push rod (304) is connected to the detection leaf (301), and the adjustment head (305) is conical.

4. A pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: The inner wall of the furnace body (101) is provided with a fixing sleeve (205), a groove is provided at a position where the fixing sleeve (205) is connected to the baffle (202), cylinders (206) are provided on both sides of the fixing sleeve (205), and a clamping plate (207) is provided at one end of the cylinder (206) away from the fixing sleeve (205).

5. The pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: A vent (2081) is provided on the surface of the vent pipe (208), a fixing seat (209) is provided inside the vent pipe (208), a telescopic spring (210) is provided on the surface of the fixing seat (209), a conical top (211) is provided at one end of the telescopic spring (210) away from the fixing seat (209), a limiting plate (212) adapted to the vent (2081) is provided below the conical top (211), and a slot is provided at one end of the conical top (211) close to the vent pipe (208).

6. The pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: An adjustment groove is provided at one end of the vent pipe (208) away from the conical top (211), an adjustment frame (213) is provided inside the adjustment groove, adjustment strips (214) are provided on both sides of the adjustment frame (213), and a movable groove adapted to the adjustment strip (214) is provided on the inner wall of the vent pipe (208); An elastic spring (215) is arranged on the surface of the adjustment frame (213), and one end of the elastic spring (215) away from the adjustment frame (213) is fixedly connected to the adjustment slot.

7. The pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: A rotation groove is provided at the position where the baffle (202) and the rotating drum (203) are connected, and one end of the rotating drum (203) away from the baffle (202) is fixedly connected to the adjustment plate (204); A material discharge trough (2021) is provided on the surface of the baffle (202), a mounting hole (2022) is provided at a position where the baffle (202) is connected to the ventilation pipe (208), and the ventilation pipe (208) is fixedly arranged in the mounting hole (2022).

8. The pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: A flow guide frame (2041) is provided at one end of the adjustment plate (204) close to the baffle plate (202); a plurality of movable grooves (2042) are provided on the surface of the adjustment plate (204); an annular plate (2043) is provided above the movable grooves (2042); the annular plate (2043) is provided on the ventilation pipe (208); and an annular groove matching the annular plate (2043) is provided at one end of the adjustment plate (204) away from the baffle plate (202).

9. The pot-type calcining furnace based on heat circulation according to claim 1, characterized in that: A feed hopper (102) is arranged above the furnace body (101); a discharge hopper (103) is arranged at one end of the furnace body (101) away from the feed hopper (102); a feeder is arranged above the feed hopper (102); an exhaust duct (104) is arranged on one side of the furnace body (101); the exhaust duct (104) is connected to the furnace body (101); and an induced draft fan is arranged on the exhaust duct (104).

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