An intelligent temperature-adjusting calcining furnace for calcining petroleum coke

Abstract

The present invention relates to the technical field of calcining furnaces, specifically to an intelligent temperature-controlled calcining furnace for calcining petroleum coke, comprising an intelligent temperature-controlled calcining furnace body, a heating plate is arranged at the inner bottom end of the intelligent temperature-controlled calcining furnace body, a discharge pipe is arranged between the bottom end of a crushing box and the top end of the intelligent temperature-controlled calcining furnace body; a feed pipe is arranged at the top end of the crushing box, a crushing mechanism comprises a rotating rod, a plurality of groups of crushing knives are evenly installed around the outer wall of the rotating rod, and a flip plate is installed at the other end of the crushing knife; a calcining box is arranged on the intelligent temperature-controlled calcining furnace body, a temperature detector is arranged on one side of the intelligent temperature-controlled calcining furnace body and the calcining box, a second induced draft fan is installed on the second air pipe, and a connecting pipe is arranged at the discharge end of the calcining box. The present invention facilitates the pulverization of petroleum coke before calcining, avoids uneven heating of agglomerates, improves the calcination quality, and is convenient and quick to discharge, and easy to use; at the same time, the residual heat of calcination can be fully utilized to avoid waste of resources.

Description

Technical Field

[0001] The invention relates to the technical field of calcining furnaces, and in particular to an intelligent temperature-regulating calcining furnace for calcining petroleum coke. Background Art

[0002] Petroleum coke is a black or dark gray hard solid petroleum product with a metallic luster and is porous. It is a carbonaceous substance composed of tiny graphite crystals in granular, columnar or needle-shaped forms. In order to make the petroleum coke meet the requirements when making graphite electrodes for steelmaking or anode paste for making aluminum and magnesium, the raw coke must be calcined. The Chinese patent with the authorization announcement number CN216432489U discloses an intelligent temperature-adjusting calcining furnace for calcining petroleum coke, which specifically relates to the technical field of calcining furnaces. By adding a first space adjustment structure and a second space adjustment structure and a structure above the furnace body for treating the gas generated by the calcination of petroleum coke, it is beneficial to the combustion of petroleum coke inside the furnace of the furnace body, wherein the volatile matter generated during the calcination of petroleum coke is effectively utilized as fuel, so that the combustion of petroleum coke is stable and the degree of graphitization of petroleum coke is low, resulting in the improvement of the high temperature strength and heat resistance of the manufactured graphite electrode, preventing the untreated harmful carbon monoxide gas from flowing out to the outside world, and protecting the health of the operator.

[0003] However, the above-mentioned publicly disclosed scheme has the following shortcomings: the above-mentioned intelligent temperature-controlled calcining furnace is not equipped with a crushing mechanism, the petroleum coke blocks are too large, and are heated unevenly during calcination, which not only cannot ensure the uniformity of the quality of the calcined coke, but is also limited by the calcination equipment, causing difficulties in adding and discharging materials. This requires the staff to crush the coke first and then put it into the intelligent temperature-controlled calcining furnace for calcination, which reduces the calcination efficiency. In addition, it is inconvenient to take out the calcined coke, and the waste heat generated by calcination cannot be fully utilized, resulting in problems such as waste of resources. Summary of the invention

[0004] (I) Purpose of the invention

[0005] In order to solve the technical problems existing in the background technology, the present invention proposes an intelligent temperature-controlled calcining furnace for calcining petroleum coke, which is convenient for crushing petroleum coke and improving calcination efficiency, while making full use of calcination waste heat and avoiding waste of resources.

[0006] (II) Technical solution

[0007] In order to solve the above problems, the present invention provides an intelligent temperature-adjusting calcining furnace for calcining petroleum coke, comprising an intelligent temperature-adjusting calcining furnace body, a heating plate is arranged at the bottom end of the interior of the intelligent temperature-adjusting calcining furnace body, a box door is hingedly connected to the side wall of the intelligent temperature-adjusting calcining furnace body, a crushing box is arranged at the top of the intelligent temperature-adjusting calcining furnace body, a discharge pipe is arranged between the bottom end of the crushing box and the top end of the intelligent temperature-adjusting calcining furnace body, and an electric valve is installed on the discharge pipe;

[0008] A feeding pipe is arranged at the top of the crushing box, and a crushing mechanism is arranged on the crushing box. The crushing mechanism includes a rotating rod, which is rotatably connected to the inner wall of the crushing box, and one end of the rotating rod extends to the outside of one end of the crushing box and is connected to a driving mechanism. Several groups of crushing knives are evenly installed around the outer wall of the rotating rod, and a flip plate is installed at the other end of the crushing knife;

[0009] A calcining box is arranged on the intelligent temperature-controlled calcining furnace body, and a spiral feeding rod is rotatably connected inside the calcining box. The left end of the spiral feeding rod extends to the outside of the calcining box and is connected to the driving mechanism. Temperature detectors are arranged on one side of the intelligent temperature-controlled calcining furnace body and the calcining box. A second air pipe is installed at one end of the calcining box close to the driving mechanism, and the other end of the second air pipe is connected to the intelligent temperature-controlled calcining furnace body close to the heating plate. A second induced draft fan is installed on the second air pipe, and a connecting pipe is arranged at the discharge end of the calcining box, and the other end of the connecting pipe is connected to a discharge pipe.

[0010] Preferably, the driving mechanism includes a driving motor, which is arranged on the outer wall of the crushing box. A pulley is installed at the output end of the driving motor, and the other end of the pulley is connected to the rotating rod. A belt is sleeved on the outer wall of the pulley, and another set of pulleys is sleeved on the other end of the belt, and the other set of pulleys is connected to the left end of the spiral feeding rod.

[0011] Preferably, the crushing box is composed of an outer plate, a hot water chamber, a middle plate, a hot air chamber and an inner plate, and the outer plate, the hot water chamber, the middle plate, the hot air chamber and the inner plate are connected in sequence; a first waste heat recovery mechanism and a second waste heat recovery mechanism are also arranged between the crushing box and the intelligent temperature control calcining furnace body.

[0012] Preferably, the first waste heat recovery mechanism includes a first air pipe and a first induced draft fan, an exhaust port is provided at the upper end of the side wall of the intelligent temperature-controlled calcining furnace body, the outside of the exhaust port is connected to the first air pipe, the other end of the first air pipe is connected to the crushing box and extends into the hot air cavity, and the first induced draft fan is provided on the first air pipe.

[0013] Preferably, a filter screen is installed on the exhaust port.

[0014] Preferably, the second waste heat recovery mechanism includes a hot water absorption pipe, which is evenly wound in the inner wall interlayer of the discharge pipe, one end of the hot water absorption pipe extends to the outside of the discharge pipe and is connected to a water inlet pipe, the other end of the hot water absorption pipe extends to the outside of the discharge pipe and is connected to a water outlet pipe, a high-pressure pump is installed on the water outlet pipe, and the other end of the water outlet pipe is connected to the crushing box and extends into the hot water chamber.

[0015] Preferably, a first exhaust pipe is provided on the pulverizing box; a second exhaust pipe is provided on the hot air cavity; and a drain valve matching the hot water cavity is provided at the bottom end of the pulverizing box.

[0016] Preferably, a baffle is provided on the inner wall of the intelligent temperature-regulating calcining furnace body and near the second gas pipe.

[0017] Compared with the prior art, the above technical scheme of the present invention has the following beneficial technical effects: the present invention can first fully crush and stir the petroleum coke, so that the subsequent calcination of the petroleum coke can be heated more evenly; the crushed petroleum coke can be turned over and calcined by a spiral feeding rod, so that the heating is uniform and the calcination quality is improved, and the volatile matter after the calcination of the petroleum coke can be recovered to assist combustion; the high-temperature gas generated by calcination can be recovered into the hot gas chamber through the first waste heat recovery mechanism to preheat the petroleum coke in the crushing process, and the heat of the calcined petroleum coke can be absorbed into water through the second waste heat recovery mechanism and then transported to the hot water chamber on the crushing box, so as to further preheat the petroleum coke inside the crushing box, so that the calcination waste heat can be fully utilized to avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 It is a schematic diagram of the connection between the crushing mechanism and the crushing box of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the intelligent temperature-adjusting calcining furnace of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the discharge pipe of the present invention.

[0022] Figure numerals: 1. crushing box; 101. feeding pipe; 102. discharging pipe; 2. intelligent temperature-adjusting calcining furnace body; 201. box door; 202. heating plate; 203. first air pipe; 204. first induced draft fan; 205. hot air chamber; 206. second air pipe; 207. second induced draft fan; 3. driving motor; 301. pulley; 302. belt; 303. rotating rod; 304. crushing knife; 305. flip plate; 4. calcining box; 401. spiral feeding rod; 402. connecting pipe; 5. discharge pipe; 501. hot water absorption pipe; 502. water inlet pipe; 503. water outlet pipe; 504. high-pressure pump; 505. hot water chamber. DETAILED DESCRIPTION

[0023] Embodiment 1

[0024] like Figure 1As shown, the present invention proposes an intelligent temperature-adjusting calcining furnace for calcining petroleum coke, comprising an intelligent temperature-adjusting calcining furnace body 2, a heating plate 202 is arranged at the inner bottom end of the intelligent temperature-adjusting calcining furnace body 2, a box door 201 is hingedly connected to the side wall of the intelligent temperature-adjusting calcining furnace body 2, a crushing box 1 is arranged at the top end of the intelligent temperature-adjusting calcining furnace body 2, a discharge pipe 102 is arranged between the bottom end of the crushing box 1 and the top end of the intelligent temperature-adjusting calcining furnace body 2, and an electric valve is installed on the discharge pipe 102; the discharge of petroleum coke can be controlled by starting and controlling the electric valve through a controller;

[0025] like Figure 1 and Figure 2 As shown, a feeding pipe 101 is provided at the top of the crushing box 1, and a crushing mechanism is provided on the crushing box 1, and the crushing mechanism includes a rotating rod 303, the rotating rod 303 is rotatably connected to the inner wall of the crushing box 1, and one end of the rotating rod 303 extends to the outside of one end of the crushing box 1 and is connected to a driving mechanism, and a plurality of groups of crushing knives 304 are evenly installed around the outer wall of the rotating rod 303, and a flip plate 305 is installed at the other end of the crushing knife 304; the plurality of flip plates 305 can evenly flip the petroleum coke, and the plurality of groups of crushing knives 304 are convenient for cutting and crushing the petroleum coke, so as to avoid uneven heating of agglomerates, which is beneficial to the subsequent calcination work;

[0026] like Figure 1 and Figure 3 As shown, a calcining box 4 is provided on the intelligent temperature-adjusting calcining furnace body 2, and a spiral feeding rod 401 is rotatably connected inside the calcining box 4. The left end of the spiral feeding rod 401 extends to the outside of the calcining box 4 and is connected to the driving mechanism. A temperature detector is provided on one side of the intelligent temperature-adjusting calcining furnace body 2 and the calcining box 4. A second air pipe 206 is installed at one end of the calcining box 4 close to the driving mechanism, and the other end of the second air pipe 206 is connected to the intelligent temperature-adjusting calcining furnace body 2 close to the heating plate 202. A second induced draft fan 207 is installed on the second air pipe 206. A connecting pipe 402 is provided at the discharge end of the calcining box 4, and the other end of the connecting pipe 402 is connected to a discharge pipe 5.

[0027] Furthermore, the driving mechanism includes a driving motor 3, which is arranged on the outer wall of the crushing box 1, and a pulley 301 is installed at the output end of the driving motor 3, and the other end of the pulley 301 is connected to the rotating rod 303. The outer wall of the pulley 301 is sleeved with a belt 302, and the other end of the belt 302 is sleeved with another set of pulleys 301, and the other set of pulleys 301 is connected to the left end of the spiral feeding rod 401; the driving motor 3 is started by the controller, and the driving motor 3 drives the pulley 301 to rotate, which can drive the rotating rod 303 to rotate, and at the same time drives the other set of pulleys 301 to rotate through the belt 302, thereby driving the calcining box 4 to rotate. By setting a set of driving motors 3, the crushing mechanism and the spiral feeding rod 401 can be started at the same time, which is more energy-saving and environmentally friendly;

[0028] Furthermore, a baffle is provided on the inner wall of the intelligent temperature-controlled calcining furnace body 2 and near the second gas pipe 206 , and the volatile matter generated by the petroleum coke in the calcining box 4 when heated can be buffered by the baffle, so that the volatile matter can fully contact with the fuel on the heating plate 202 to promote combustion.

[0029] In this embodiment, petroleum coke is put into the feed pipe 101, and the driving motor 3 is started by the controller to drive the rotating rod 303, and the rotating rod 303 drives several groups of crushing knives 304 and the flip plate 305 to flip and crush the petroleum coke, so that the petroleum coke blocks can be quickly crushed; the valve port of the electric valve is opened to allow the petroleum coke particles crushed to a certain degree to enter the calcination box 4 through the discharge pipe 102, and the valve port of the electric valve is closed, and the crushing box 1 can be used to continue to crush the next batch of petroleum coke; the box door 201 is opened, and the fuel is placed on the heating plate 202, and the heating plate 202 is started by the controller to start working, and the petroleum coke inside the calcination box 4 is heated and calcined. Since the driving mechanism is started, the spiral feeding rod 401 can be driven to rotate at the same time, and the calcination period can be The controller controls the output end of the driving motor 3 in the driving mechanism to rotate alternately clockwise and counterclockwise, and then the spiral feeding rod 401 can rotate alternately clockwise and counterclockwise to flip the petroleum coke in the calcination process, so that the heating is more uniform and the calcination efficiency is improved. When the petroleum coke reaches a certain temperature, volatile matter will be released. The volatile matter contains a large amount of combustible gas. The second induced draft fan 207 is started by the controller to transport the volatile matter in the calcination box 4 to the intelligent temperature-controlled calcination furnace body 2 to fully contact with the fuel on the heating plate 202 for combustion, so that the volatile matter can be reused to avoid direct external discharge and cause harm; after calcination, the electric valve port on the connecting pipe 402 is opened, and the calcined petroleum coke can be discharged along the discharge pipe 5 by rotating the spiral feeding rod 401.

[0030] Embodiment 2

[0031] like Figures 1 to 4 As shown, the intelligent temperature-adjusting calcining furnace for calcining petroleum coke proposed by the present invention, compared with the first embodiment, the crushing box 1 is composed of an outer plate, a hot water cavity 505, a middle plate, a hot air cavity 205 and an inner plate, and the outer plate, the hot water cavity 505, the middle plate, the hot air cavity 205 and the inner plate are connected in sequence; a first waste heat recovery mechanism and a second waste heat recovery mechanism are also arranged between the crushing box 1 and the intelligent temperature-adjusting calcining furnace body 2;

[0032] Furthermore, the first waste heat recovery mechanism includes a first air pipe 203 and a first induced draft fan 204. An exhaust port is provided at the upper end of the side wall of the intelligent temperature-adjusting calcining furnace body 2. A filter is installed on the exhaust port to filter smoke particles in the high-temperature hot air. The outside of the exhaust port is connected to the first air pipe 203. The other end of the first air pipe 203 is connected to the crushing box 1 and extends into the hot air cavity 205. The first induced draft fan 204 is arranged on the first air pipe 203. The second waste heat recovery mechanism includes a hot water absorption pipe 501. The hot water absorption pipe 501 is evenly wound in the inner wall interlayer of the discharge pipe 5. One end of the hot water absorption pipe 501 extends to the outside of the discharge pipe 5 and is connected to the water inlet pipe 502. The other end of the hot water absorption pipe 501 extends to the outside of the discharge pipe 5 and is connected to the water outlet pipe 503. A high-pressure pump 504 is installed on the water outlet pipe 503. The other end of the water outlet pipe 503 is connected to the crushing box 1 and extends into the hot water cavity 505.

[0033] Furthermore, a first exhaust pipe is provided on the pulverizing box 1. After the waste heat is recovered and utilized, the petroleum coke inside the pulverizing box 1 will be preheated to produce a small amount of gas. However, due to the limited temperature, no volatile matter will be produced and can be discharged through the first exhaust pipe; a second exhaust pipe is provided on the hot gas chamber 205 to facilitate the discharge of the high-temperature gas after the heat is reduced; a drain valve matching the hot water chamber 505 is provided at the bottom of the pulverizing box 1 to facilitate the discharge of the cooled water in the hot water chamber 505.

[0034] In this embodiment, when the heating plate 202 and the fuel calcine the petroleum coke inside the calcining box 4, the combustion of the fuel will produce high-temperature gas. If it is discharged directly, the waste heat of the gas will not be utilized. The first induced draft fan 204 is started by the controller to extract the high-temperature gas inside the intelligent temperature-controlled calcining furnace body 2. The gas passes through the filter to filter out large particles of smoke and enters the hot gas chamber 205. At this time, the high-temperature gas can use the waste heat of the petroleum coke being crushed inside the crushing box 1; when the calcined petroleum coke is discharged through the discharge pipe 5, water can be injected from the water inlet pipe 502 into the hot water absorption pipe 501. The water in the hot water absorption pipe 501 can absorb the heat of the high-temperature petroleum coke inside the discharge pipe 5, which is convenient for the petroleum coke to dissipate heat. At the same time, the water after absorbing heat is transported to the hot water chamber 505 through the high-pressure pump 504 and the water outlet pipe 503, so as to further preheat the petroleum coke in the crushing box 1, reduce the temperature difference between the crushed petroleum coke and the calcining box 4, further improve the calcination efficiency and calcination quality, and avoid waste heat.

[0035] Working principle: Through the crushing box 1, driving mechanism and crushing mechanism, the petroleum coke can be fully crushed and stirred first, so that the subsequent calcination of the petroleum coke can be heated more evenly; through the intelligent temperature-controlled calcining furnace body 2, heating plate 202, calcining box 4 and spiral feeding rod 401, the crushed petroleum coke can be turned over and calcined to make the heating even and improve the calcination quality, and the volatile matter after the calcination of the petroleum coke can be recovered to the heating plate 202 to contact with the fuel for combustion; through the first waste heat recovery mechanism, the high-temperature gas generated by calcination can be filtered and then transported to the hot air chamber 205 on the crushing box 1 to preheat the petroleum coke in the crushing process, and through the second waste heat recovery mechanism, the heat of the calcined petroleum coke can be absorbed into water, and then transported to the hot water chamber 505 on the crushing box 1 to further preheat the petroleum coke inside the crushing box 1, so that the calcination waste heat can be fully utilized to avoid waste of resources.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An intelligent temperature-adjustable calcining furnace for calcining petroleum coke, comprising an intelligent temperature-adjustable calcining furnace body (2), a heating plate (202) being arranged at the inner bottom end of the intelligent temperature-adjustable calcining furnace body (2), and a door (201) being hingedly connected to the side wall of the intelligent temperature-adjustable calcining furnace body (2). It is characterized in that A crushing box (1) is arranged at the top of the intelligent temperature-adjusting calcining furnace body (2), a discharge pipe (102) is arranged between the bottom of the crushing box (1) and the top of the intelligent temperature-adjusting calcining furnace body (2), and an electric valve is installed on the discharge pipe (102); The crushing box (1) is composed of an outer plate, a hot water cavity (505), a middle plate, a hot air cavity (205) and an inner plate, and the outer plate, the hot water cavity (505), the middle plate, the hot air cavity (205) and the inner plate are connected in sequence; a first waste heat recovery mechanism and a second waste heat recovery mechanism are also provided between the crushing box (1) and the intelligent temperature-adjusting calcining furnace body (2); The first waste heat recovery mechanism comprises a first air pipe (203) and a first induced draft fan (204); an exhaust port is arranged at the upper end of the side wall of the intelligent temperature-adjusting calcining furnace body (2); the outside of the exhaust port is connected to the first air pipe (203); the other end of the first air pipe (203) is connected to the pulverizing box (1) and extends into the hot air cavity (205); and the first induced draft fan (204) is arranged on the first air pipe (203); The second waste heat recovery mechanism comprises a hot water absorption pipe (501), the hot water absorption pipe (501) is evenly wound in the inner wall interlayer of the discharge pipe (5), one end of the hot water absorption pipe (501) extends to the outside of the discharge pipe (5) and is connected to a water inlet pipe (502), the other end of the hot water absorption pipe (501) extends to the outside of the discharge pipe (5) and is connected to a water outlet pipe (503), a high-pressure pump (504) is installed on the water outlet pipe (503), and the other end of the water outlet pipe (503) is connected to the crushing box (1) and extends to the hot water chamber (505); A feeding pipe (101) is arranged at the top of the crushing box (1), and a crushing mechanism is arranged on the crushing box (1), the crushing mechanism comprising a rotating rod (303), the rotating rod (303) is rotatably connected to the inner wall of the crushing box (1), and one end of the rotating rod (303) extends to the outside of one end of the crushing box (1) and is connected to a driving mechanism, a plurality of groups of crushing knives (304) are evenly installed around the outer wall of the rotating rod (303), and a flip plate (305) is installed at the other end of the crushing knife (304); The intelligent temperature-controlled calcining furnace body (2) is provided with a calcining box (4), the interior of the calcining box (4) is rotatably connected with a spiral feeding rod (401), the left end of the spiral feeding rod (401) extends to the outside of the calcining box (4) and is connected to a driving mechanism, a temperature detector is provided on one side of the intelligent temperature-controlled calcining furnace body (2) and the calcining box (4), a second air pipe (206) is installed at one end of the calcining box (4) close to the driving mechanism, the other end of the second air pipe (206) is connected to the intelligent temperature-controlled calcining furnace body (2) close to the heating plate (202), a second induced draft fan (207) is installed on the second air pipe (206), a connecting pipe (402) is provided at the discharge end of the calcining box (4), and the other end of the connecting pipe (402) is connected to a discharge pipe (5).

2. The intelligent temperature-adjusting calcining furnace for calcining petroleum coke according to claim 1, It is characterized in that The driving mechanism comprises a driving motor (3), the driving motor (3) is arranged on the outer wall of the crushing box (1), a belt pulley (301) is installed at the output end of the driving motor (3), the other end of the belt pulley (301) is connected to a rotating rod (303), a belt (302) is sleeved on the outer wall of the belt pulley (301), another group of belt pulleys (301) is sleeved on the other end of the belt (302), and the other group of belt pulleys (301) is connected to the left end of the spiral feeding rod (401).

3. The intelligent temperature-adjusting calcining furnace for calcining petroleum coke according to claim 1, It is characterized in that A filter is installed on the exhaust port.

4. The intelligent temperature-adjusting calcining furnace for calcining petroleum coke according to claim 1, It is characterized in that The crushing box (1) is provided with a first exhaust pipe; the hot air chamber (205) is provided with a second exhaust pipe; and the bottom end of the crushing box (1) is provided with a drain valve matching the hot water chamber (505).

5. The intelligent temperature-adjusting calcining furnace for calcining petroleum coke according to claim 1, It is characterized in that A baffle is provided on the inner wall of the intelligent temperature-regulating calcining furnace body (2) and close to the second gas pipe (206).

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