A petroleum coke feeding mechanism

Abstract

This invention relates to the field of petroleum coke feeding technology and discloses a petroleum coke feeding mechanism connected to the boiler feed inlet. The mechanism includes a feeding pipe, a first air supply pipe, a wind speed sensor, a vibration device, and a control device. The feeding pipe has an inlet and an outlet. The inlet is used for feeding petroleum coke, and the outlet is connected to the boiler feed inlet. The first air supply pipe is located inside the feeding pipe, with its outlet directly opposite the outlet. The wind speed sensor is located inside the feeding pipe and is used to sense the wind speed within the feeding pipe. The vibration device is located inside the feeding pipe. The control device is electrically connected to the wind speed sensor and the vibration device. This invention provides a petroleum coke feeding mechanism to prevent the feeding pipe from becoming clogged.

Description

Technical Field

[0001] This invention relates to the field of petroleum coke feeding technology, and in particular to a petroleum coke feeding mechanism. Background Technology

[0002] Petroleum coke is one of the main byproducts of the oil refining industry. The sulfur content of petroleum coke determines its final use; high-sulfur coke is mainly used as fuel, undergoing desulfurization combustion in boilers. Currently, petroleum coke combustion and desulfurization primarily involves feeding it into the boiler through a feed pipe. However, the feeding process for petroleum coke presents two problems, as follows:

[0003] (1) The pressure inside the furnace of the boiler is positive; however, the pressure of the conveying air and petroleum coke entering the furnace of the boiler is low, and its pressure is only slightly greater than the internal pressure of the furnace of the boiler, which makes it easy for the petroleum coke to block the feed pipe.

[0004] (2) Petroleum coke has a high water content and high viscosity, which can easily clog the pipes. In addition, after the petroleum coke enters the furnace of the boiler through the feed pipe, the petroleum coke does not diffuse completely. After the petroleum coke burns rapidly, it will produce a large amount of combustion gas. The combustion gas accumulates at the discharge port of the feed pipe, which can easily cause coking of the petroleum coke at the discharge port of the feed pipe. When a certain amount of petroleum coke accumulates at the discharge port of the feed pipe, the feed pipe will become blocked. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: the present invention provides a petroleum coke feeding mechanism so as to make the feeding pipe less prone to blockage.

[0006] To achieve the above objectives, the present invention provides a petroleum coke feeding mechanism, which is connected to the feed inlet of a boiler, and includes:

[0007] The feed pipe has an inlet and an outlet. The inlet of the feed pipe is used for feeding petroleum coke, and the outlet of the feed pipe is connected to the feed inlet of the boiler.

[0008] The first air supply pipe is located inside the material discharge pipe, and the air outlet of the first air supply pipe is directly opposite the material discharge outlet of the material discharge pipe.

[0009] A wind speed sensor is installed inside the feed pipe and is used to sense the wind speed inside the feed pipe.

[0010] A vibration device is disposed inside the material discharge pipe;

[0011] A control device, which is electrically connected to the wind speed sensor and the vibration device.

[0012] In some embodiments of this application, the petroleum coke feeding mechanism further includes a second air supply pipe, the outlet of which is connected to the furnace of the boiler, and the feeding pipe and the second air supply pipe are located on the same side of the boiler.

[0013] In some embodiments of this application, the vibration device includes an ultrasonic generator and a vibrating rod. The input end of the ultrasonic generator is electrically connected to the control device, and the output end of the ultrasonic generator is connected to the vibrating rod. The ultrasonic generator is located outside the discharge pipe, and the vibrating rod is located inside the discharge pipe.

[0014] In some embodiments of this application, the outer wall of the vibrating rod has multiple cut surfaces.

[0015] In some embodiments of this application, the discharge pipe includes a first pipe body and a second pipe body connected to the first pipe body. The first pipe body is provided with a feed inlet, the second pipe body is provided with a discharge outlet, and the first air supply pipe is disposed in the second pipe body. The feed inlet of the first pipe body is the feed inlet of the discharge pipe, and the discharge outlet of the second pipe body is the discharge outlet of the discharge pipe.

[0016] The first pipe body is connected to the second pipe body, and the first pipe body is vertically arranged; the second pipe body is inclined downwards towards the boiler.

[0017] In some embodiments of this application, the first tube body is provided with an expansion joint.

[0018] In some embodiments of this application, the angle between the outer wall of the second tube and the horizontal plane is 45°–60°.

[0019] In some embodiments of this application, the angle between the outer wall of the second air supply duct and the horizontal plane is 30°–35°.

[0020] In some embodiments of this application, the control device is a PID controller.

[0021] This invention provides a petroleum coke feeding mechanism, which, compared with the prior art, has the following advantages:

[0022] In the petroleum coke feeding mechanism of this invention, when a blockage occurs in the feeding pipe, the wind speed sensor detects that the wind speed in the feeding pipe will decrease. The wind speed sensor transmits a signal to the control device, which controls the vibration device to start. The vibration device vibrates and cuts the petroleum coke in the feeding pipe into powder. As a result, the conveying air output from the first air supply pipe can more easily transport the powdered petroleum coke into the furnace of the boiler, thus making it less likely for the feeding pipe to become blocked. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the petroleum coke feeding mechanism according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the connection structure of the boiler, the feed pipe, and the second air duct in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the connection structure of the material discharge pipe, the first air duct, and the ultrasonic generator in an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the vibrating rod according to an embodiment of the present invention.

[0027] In the diagram, 1 is the material discharge pipe; 11 is the first pipe body; 111 is the feed inlet; 12 is the second pipe body; 121 is the discharge outlet; 2 is the first air supply pipe; 3 is the wind speed sensor; 4 is the vibration device; 41 is the ultrasonic generator; 42 is the vibrating rod; 421 is the cutting surface; 5 is the control device; 6 is the second air supply pipe; 7 is the expansion joint; and 8 is the boiler. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] To achieve the above objectives, such as Figure 1 As shown in Figure 4, this embodiment of the invention provides a petroleum coke feeding mechanism, which is connected to the feed inlet of a boiler 8. It includes a feeding pipe 1, a first air supply pipe 2, a wind speed sensor 3, a vibration device 4, and a control device 5. The feeding pipe 1 has a feed inlet 111 and a discharge outlet 121. The feed inlet 111 of the feeding pipe 1 is used for feeding petroleum coke, and the discharge outlet 121 of the feeding pipe 1 is connected to the feed inlet of the boiler 8. The first air supply pipe 2 is located inside the feeding pipe 1, and the air outlet of the first air supply pipe 2 is directly opposite the discharge outlet 121 of the feeding pipe 1. The wind speed sensor 3 is located inside the feeding pipe 1 and is used to sense the wind speed inside the feeding pipe. The vibration device 4 is located inside the feeding pipe 1. The control device 5 is electrically connected to the wind speed sensor 3 and the vibration device 4.

[0031] Based on the above configuration, in the petroleum coke feeding mechanism of this embodiment of the invention, when a blockage occurs in the feeding pipe 1, the wind speed sensor 3 detects that the wind speed in the feeding pipe 1 will decrease. The wind speed sensor 3 transmits a signal to the control device 5, and the control device 5 controls the vibration device 4 to start. The vibration device 4 vibrates and cuts the petroleum coke in the feeding pipe 1 into powder. As a result, the conveying air output from the first air pipe 2 can more easily transport the powdered petroleum coke into the furnace of the boiler 8, thereby making it less likely for the feeding pipe 1 to become blocked.

[0032] In some embodiments, such as Figure 1 and 2 As shown, petroleum coke tends to clump together after accumulating in the feed pipe 1. When the petroleum coke accumulates at the outlet 121 of the feed pipe 1, the outlet 121 of the feed pipe 1 is prone to sintering or burning. Therefore, in order to avoid sintering or burning at the outlet 121 of the feed pipe 1, the petroleum coke feeding mechanism also includes a second air supply pipe 6. The outlet of the second air supply pipe 6 is connected to the furnace of the boiler 8. The feed pipe 1 and the second air supply pipe 6 are located on the same side of the boiler 8. Thus, after the second air supply pipe 6 outputs the conveying air, the conveying air cools the outlet 121 of the feed pipe 1 to prevent the outlet 121 of the feed pipe 1 from overheating.

[0033] Furthermore, when the petroleum coke slides down to the discharge port 121 of the feed pipe 1, the conveying air output from the second air supply pipe 6 disturbs the petroleum coke, causing it to form turbulence. This makes the distribution of the petroleum coke in the boiler 8 more uniform, preventing it from clumping together. Consequently, the combustion of the petroleum coke in the boiler 8 becomes more uniform, which is beneficial to the operation of the boiler 8. It also increases the air volume on the front wall, reducing the oxygen-deficient reduction corrosion of the front wall water-cooled wall.

[0034] For example, in this embodiment, the second air supply pipe 6 is located below the material discharge pipe 1; in addition, the second air pipe is flat and the discharge port 121 of the second air pipe is arc-shaped.

[0035] In some embodiments, such as Figure 1 , 3 As shown in Figure 4, the vibration device 4 includes an ultrasonic generator 41 and a vibrating rod 42. The input end of the ultrasonic generator 41 is electrically connected to the control device 5, and the output end of the ultrasonic generator 41 is connected to the vibrating rod 42. The ultrasonic generator 41 is located outside the feed pipe 1, and the vibrating rod 42 is located inside the feed pipe 1. Thus, by setting up the ultrasonic generator 41, the ultrasonic generator 41 generates ultrasonic waves and transmits the ultrasonic waves to the vibrating rod 42; by setting up the vibrating rod 42, the vibrating rod 42 vibrates itself while emitting ultrasonic waves, thereby better vibrating and crushing the petroleum coke and preventing the petroleum coke from clogging the feed pipe 1.

[0036] In some embodiments, such as Figure 3 As shown, the outer wall of the vibrating rod 42 has multiple cutting surfaces 421. Thus, when petroleum coke comes into contact with the cutting surfaces 421 of the vibrating rod 42, the cutting surfaces 421 of the vibrating rod 42 crush the petroleum coke to make it into powder, thereby facilitating the discharge of the petroleum coke.

[0037] For example, the outer wall of the vibrator 42 has four cut surfaces 421.

[0038] In some embodiments, such as Figure 1 As shown, the discharge pipe 1 includes a first pipe body 11 and a second pipe body 12 connected to the first pipe body 11. The first pipe body 11 is provided with a feed inlet 111, and the second pipe body 12 is provided with a discharge outlet 121. The first air supply pipe 2 is located inside the second pipe body 12. The feed inlet 111 of the first pipe body 11 is the feed inlet 111 of the discharge pipe 1, and the discharge outlet 121 of the second pipe body 12 is the discharge outlet 121 of the discharge pipe 1.

[0039] The first pipe body 11 is connected to the second pipe body 12, and the first pipe body 11 is vertically arranged; the second pipe body 12 is inclined downwards towards the boiler 8. Therefore, because the first pipe body 11 is vertically arranged, when petroleum coke enters the first pipe body 11 through the inlet 111, the petroleum coke quickly enters the second pipe body 12 under its own gravity, thus promoting the feeding of petroleum coke; similarly, because the second pipe body 12 is inclined downwards towards the boiler 8, the petroleum coke quickly enters the boiler 8 through the outlet 121 of the second pipe body 12 under its own gravity, thus promoting the feeding of petroleum coke.

[0040] For example, the angle between the outer wall of the second pipe body 12 and the horizontal plane is 45°–60°, and the angle between the outer wall of the second air supply pipe 6 and the horizontal plane is 30°–35°.

[0041] In some embodiments, such as Figure 1 As shown, the first pipe body 11 is provided with an expansion joint 7. Thus, the expansion joint 7 prevents the first pipe body 11 from rupturing and ensures the service life of the first pipe body 11.

[0042] In some embodiments, such as Figure 1 As shown, control device 5 is a PID controller. Therefore, the PID controller has the advantages of fast response speed and high control accuracy.

[0043] In summary, in the petroleum coke feeding mechanism of this embodiment, when a blockage occurs in the feeding pipe 1, the wind speed sensor 3 detects that the wind speed in the feeding pipe 1 will decrease. The wind speed sensor 3 transmits a signal to the control device 5, and the control device 5 controls the vibration device 4 to start. The vibration device 4 vibrates and cuts the petroleum coke in the feeding pipe 1 into powder. As a result, the conveying air output from the first air pipe 2 can more easily transport the powdered petroleum coke into the furnace of the boiler 8, thereby making it less likely for the feeding pipe 1 to become blocked.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A petroleum coke feeding mechanism, which is connected to the feed inlet of a boiler, characterized in that, include: The feed pipe has an inlet and an outlet. The inlet of the feed pipe is used for feeding petroleum coke, and the outlet of the feed pipe is connected to the feed inlet of the boiler. The first air supply pipe is located inside the material discharge pipe, and the air outlet of the first air supply pipe is directly opposite the material discharge outlet of the material discharge pipe. A wind speed sensor is installed inside the material discharge pipe, and the wind speed sensor is used to sense the wind speed inside the material discharge pipe. A vibration device is disposed inside the material discharge pipe; A control device, which is electrically connected to the wind speed sensor and the vibration device; It also includes a second air supply pipe, the outlet of which is connected to the furnace of the boiler, and the material discharge pipe and the second air supply pipe are located on the same side of the boiler. The vibration device includes an ultrasonic generator and a vibrating rod. The input end of the ultrasonic generator is electrically connected to the control device, and the output end of the ultrasonic generator is connected to the vibrating rod. The ultrasonic generator is located outside the material discharge tube, and the vibrating rod is located inside the material discharge tube. The outer wall of the vibrating rod has multiple cut surfaces.

2. The petroleum coke feeding mechanism according to claim 1, characterized in that, The discharge pipe includes a first pipe body and a second pipe body connected to the first pipe body. The first pipe body is provided with a feed inlet, and the second pipe body is provided with a discharge outlet. The first air supply pipe is located inside the second pipe body. The feed inlet of the first pipe body is the feed inlet of the discharge pipe, and the discharge outlet of the second pipe body is the discharge outlet of the discharge pipe. The first pipe body is connected to the second pipe body, and the first pipe body is vertically arranged; the second pipe body is inclined downwards towards the boiler.

3. The petroleum coke feeding mechanism according to claim 2, characterized in that, The first tube is equipped with an expansion joint.

4. The petroleum coke feeding mechanism according to claim 3, characterized in that, The angle between the outer wall of the second tube and the horizontal plane is 45°-60°.

5. The petroleum coke feeding mechanism according to claim 4, characterized in that, The angle between the outer wall of the second air supply duct and the horizontal plane is 30°-35°.

6. The petroleum coke feeding mechanism according to claim 1, characterized in that, The control device is a PID controller.

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