Calcining furnace for producing calcined petroleum coke

Abstract

The utility model discloses a calcining furnace for producing calcined petroleum coke, which comprises a working table, two supporting columns are fixedly connected to the lower end of the working table, a furnace body is fixedly connected to the upper end of the working table, an exhaust pipe and a combustion pipe are respectively arranged on the side wall of the furnace body in a butt joint mode, a feeding port is arranged on the side wall of the other side of the furnace body in a penetrating mode, and a discharging port is arranged on the other side of the furnace body. A feeding plate is fixedly connected to the feeding port, a smashing device is fixedly connected to the upper end of the furnace body, and a sealing device is arranged below the workbench. The calcining furnace has the advantages that an operator can stir and crush materials conveniently, material blockage is reduced, and the calcining speed is increased.

Description

A calcining furnace for producing petroleum coke Technical Field

[0001] This utility model relates to the field of calcining furnaces for calcining petroleum coke, specifically a calcining furnace for producing calcined petroleum coke. Background Technology

[0002] The furnace body of a petroleum coke calcining furnace is typically circular or rectangular, constructed using refractory materials. These refractory materials need to possess high-temperature strength, good thermal insulation, and thermal shock resistance to withstand the thermal stress caused by high-temperature environments and temperature changes. The furnace body is equipped with furnace doors or loading / unloading ports for loading materials and unloading calcined products. The design of the furnace doors and loading / unloading ports must ensure good sealing to prevent heat loss and air leakage. After the petroleum coke raw material enters the calcining furnace through the feeding device, it moves forward into the high-temperature calcination zone. Fuel combustion generates a large amount of heat, and the petroleum coke undergoes complex physicochemical changes at high temperatures. Volatile matter further escapes, the fixed carbon content increases, the internal structure of the petroleum coke becomes denser, its volume shrinks, and its density increases. It is mainly used for the calcination of petroleum coke to produce graphite electrodes, carbon raisers, and other products. These products are widely used in industries such as steel smelting, calcium carbide production, yellow phosphorus production, aerospace, and automobile manufacturing.

[0003] In the existing technology, during the calcination of petroleum coke, the petroleum coke material is distributed in fragments at the furnace body. When feeding the material, the different sizes of the fragments may cause blockage. Therefore, we propose a calcination furnace for the production of calcined petroleum coke. Summary of the Invention

[0004] The purpose of this utility model is to provide a calcining furnace for calcining petroleum coke production, so as to solve the problems existing in the prior art mentioned in the background.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A calcining furnace for producing petroleum coke includes a work platform. Two support columns are fixedly connected to the lower end of the work platform, and a furnace body is fixedly connected to the upper end of the work platform. An exhaust pipe and a combustion pipe are respectively connected to the side wall of the furnace body. A feed inlet is provided through the other side wall of the furnace body, and a feed plate is fixedly connected to the feed inlet. A crushing device is fixedly connected to the upper end of the furnace body, and a sealing device is provided below the work platform.

[0007] Preferably, the crushing device includes a heat insulation plate fixedly connected to the upper end of the furnace body, a heat insulation box fixedly connected to the upper end of the heat insulation plate, a motor fixedly connected inside the heat insulation box, a rotating column fixedly connected to the end of the output shaft of the motor, the rotating column passing through the heat insulation box and the heat insulation plate and extending into the furnace body, and two crushing rods fixedly connected to the rotating column at the side wall inside the furnace body.

[0008] Preferably, the sealing device includes a device base disposed below the workbench, the device base being fixedly connected to the lower end of the furnace body, a material discharge port being provided through the lower end of the furnace body, a base plate being slidably disposed through the device base, the position of the base plate corresponding to the position of the material discharge port, a fixing rod being fixedly connected between the two columns at the corresponding positions, two hydraulic rods being fixedly connected to the fixing rod, and the extended ends of the two hydraulic rods being fixedly connected to the lower end of the base plate.

[0009] Preferably, the rotating column is wrapped with a heat-insulating column on the side wall inside the furnace.

[0010] Preferably, the end of the combustion tube located inside the furnace body is bent downwards.

[0011] Preferably, both of the crushing rods are located at the inner bottom of the furnace body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, by setting up a crushing device and a sealing device to work together, a rotating column and a crushing rod are designed in the furnace body to stir the added material. This ensures that the calcination is complete during the calcination process. When feeding the material, the crushing rod can be used to move and crush the material, avoiding blockage caused by excessively large particles. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of a calcining furnace for producing calcined petroleum coke according to this utility model.

[0015] Figure 2 is an internal schematic diagram of a calcining furnace for producing petroleum coke according to the present invention.

[0016] In the diagram: 1. Workbench, 2. Furnace body, 3. Feed plate, 4. Insulation plate, 5. Insulation box, 6. Exhaust pipe, 7. Combustion pipe, 8. Support column, 9. Device base, 10. Base plate, 11. Fixing rod, 12. Hydraulic rod, 13. Rotating column, 14. Crushing rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Referring to Figures 1-2, a calcining furnace for producing petroleum coke includes a platform 1. The platform 1 is made of high-strength steel and has excellent load-bearing capacity, capable of stably supporting the operating weight of the entire calcining furnace. Two support columns 8 are fixedly connected to the lower end of the platform 1. The surfaces of the support columns 8 are treated with rust prevention and adopt a 45° inclined support structure to improve the overall stability. A furnace body 2 is fixedly connected to the upper end of the platform 1. The furnace body 2 adopts a refractory brick lining design and is covered with a 2mm thick high-temperature resistant metal plate on the outside, capable of withstanding 12... For high-temperature conditions above 00℃, exhaust pipe 6 and combustion pipe 7 are respectively connected to the side wall of furnace body 2. The exhaust pipe 6 is equipped with a filter screen. The combustion pipe 7 adopts a spiral design to extend the combustion path. One end of the combustion pipe 7 inside the furnace body 2 is bent downwards. This design helps to fully combust the gas and form a downward-spraying flame, improving thermal efficiency by 30%. A feed inlet is provided through the other side wall of furnace body 2. The feed inlet adopts a rectangular design to facilitate the feeding of materials. A feed plate 3 is fixedly connected to the feed inlet. The feed plate 3 is designed with a 45° inclination and has a polished surface to ensure that the material slides in smoothly without causing blockage. A crushing device is fixedly connected to the upper end of the furnace body 2. The crushing device is connected to the furnace body 2 by a flange for easy maintenance and replacement. The crushing device includes a heat insulation plate 4 fixedly connected to the upper end of the furnace body 2. The heat insulation plate 4 is made of double-layer stainless steel with asbestos material in the middle to effectively isolate heat transfer. A heat insulation box 5 is fixedly connected to the upper end of the heat insulation plate 4, leaving sufficient heat dissipation space. A motor is fixedly connected inside the heat insulation box 5. A rotating column 13 is fixedly connected to the end of the motor's output shaft. The rotating column 13 is made of high-temperature alloy steel with a shaft diameter of 80mm and a wear-resistant coating on the surface. The rotating column 13 passes through the heat insulation box 5 and the heat insulation plate 4 and extends into the furnace body 2. The penetration is sealed with a graphite sealing ring to prevent high-temperature gas leakage. Two crushing rods 14 are fixedly connected to the rotating column 13 on the side wall inside the furnace body 2. The crushing rods 14 are made of high-manganese steel, 350mm in length, and are symmetrically distributed in a cross shape, with excellent impact resistance.

[0019] A sealing device is installed below the workbench 1. The sealing device adopts a fully enclosed design to ensure that no dust leaks out during the production process. The sealing device includes a device base 9 installed below the workbench 1. The device base 9 is fixed with high-strength bolts. The base plate is 15mm thick to ensure structural stability. The device base 9 is fixedly connected to the lower end of the furnace body 2. The connection part is further sealed with fireproof sealant. A feeding port is installed through the lower end of the furnace body 2 to ensure smooth material discharge. A base plate 10 is slidably installed through the device base 9. The base plate 10 is made of 4mm thick stainless steel plate and anti-slip rubber strips are installed on the side. The position of the base plate 10 corresponds to the position of the feeding port. The opening and closing position is monitored in real time by an infrared sensor. A fixing rod 11 is fixedly connected between the two pillars 8 at the corresponding position. The fixing rod 11 is made of Φ50mm round steel and is fixed at both ends by welding. It can withstand 5 tons of pressure. Two hydraulic rods 12 are fixedly connected to the fixing rod 11. The surface is treated with anti-corrosion chrome plating. The extended ends of the two hydraulic rods 12 are fixedly connected to the lower end of the base plate 10. The connection is fixed with a high-strength pin, which can withstand frequent reciprocating motion.

[0020] Specifically, the rotating column 13 is wrapped with a heat insulation column on the side wall inside the furnace body 2. The heat insulation column is made of ceramic fiber material with a thickness of 40mm, which can effectively protect the rotating parts from high temperature damage. The two crushing rods 14 are located at the bottom inside the furnace body 2. The crushing rods 14 maintain a 20mm gap with the bottom surface, which ensures the crushing effect and avoids direct friction.

[0021] In this invention, the operator can input combustion gas into the furnace body 2 through the combustion pipe 7 and calcine the material inside the furnace body 2. The flue gas will be discharged through the exhaust pipe 6. Material is added at the feed plate 3 on one side. The motor on the upper side can drive the rotating column 13 to rotate. After the rotating column 13 rotates, it can drive the two crushing rods 14 to rotate and turn and crush the material, which can speed up the calcination speed. When feeding, the two hydraulic rods 12 below can drive the bottom plate 10 to fall and expose the feeding port, so that the material can be discharged.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A calcining furnace for producing petroleum coke, comprising a workbench (1), characterized in that, Two support columns (8) are fixedly connected to the lower end of the workbench (1). A furnace body (2) is fixedly connected to the upper end of the workbench (1). An exhaust pipe (6) and a combustion pipe (7) are respectively connected to the side wall of the furnace body (2). A feed inlet is provided through the other side wall of the furnace body (2). A feed plate (3) is fixedly connected to the feed inlet. A crushing device is fixedly connected to the upper end of the furnace body (2). A sealing device is provided at the lower part of the workbench (1).

2. The calcining furnace for producing petroleum coke according to claim 1, characterized in that, The crushing device includes a heat insulation plate (4) fixedly connected to the upper end of the furnace body (2). A heat insulation box (5) is fixedly connected to the upper end of the heat insulation plate (4). A motor is fixedly connected inside the heat insulation box (5). A rotating column (13) is fixedly connected to the end of the output shaft of the motor. The rotating column (13) passes through the heat insulation box (5) and the heat insulation plate (4) and extends into the furnace body (2). Two crushing rods (14) are fixedly connected to the rotating column (13) at the side wall inside the furnace body (2).

3. A calcining furnace for producing petroleum coke according to claim 1, characterized in that, The sealing device includes a device base (9) located below the workbench (1). The device base (9) is fixedly connected to the lower end of the furnace body (2). A discharge port is provided through the lower end of the furnace body (2). A base plate (10) is slidably provided through the device base (9). The position of the base plate (10) corresponds to the position of the discharge port. A fixing rod (11) is fixedly connected between the two pillars (8) at the corresponding positions. Two hydraulic rods (12) are fixedly connected to the fixing rod (11). The extended ends of the two hydraulic rods (12) are fixedly connected to the lower end of the base plate (10).

4. A calcining furnace for producing petroleum coke according to claim 2, characterized in that, The rotating column (13) is wrapped with a heat insulation column on the side wall inside the furnace body (2).

5. A calcining furnace for producing petroleum coke according to claim 1, characterized in that, The end of the combustion tube (7) located inside the furnace body (2) is bent downwards.

6. A calcining furnace for producing petroleum coke according to claim 2, characterized in that, Both of the aforementioned crushing rods (14) are located at the inner bottom of the furnace body (2).

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