Pressurizing device for preparing absorber oil from coal tar
The pressurizing device for coal tar processing enhances the methyl naphthalene content and washing oil index by controlled heating and transfer processes, addressing the low content issues in existing coal tar deep processing methods.
Patent Information
- Application Number
- CN202420348958.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The content of methyl naphthalene in washing oil produced from coal tar is low, and the washing oil index is low, limiting the effectiveness of coal tar deep processing.
A pressurizing device comprising a preheating tank, distillation tank, and oil storage tank, equipped with solenoid valves and heating devices, ensures controlled heating and transfer of coal tar to specific temperatures, enhancing the proportion of distillates between 230-270°C, thereby increasing the methyl naphthalene content and improving the washing oil index.
The device effectively increases the proportion of distillates between 230-270°C, reducing crude naphthalene content and enhancing the methyl naphthalene content in washing oil, thus improving the quality of coal tar processing.
Smart Images
Figure CN222226265U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of chemical separation, in particular to a pressurizing device for preparing washing oil from coal tar. Background Art
[0002] Coal tar is one of the important by-products of coking. According to incomplete statistics, my country's coal tar production reached 16 million tons in 2020, of which the 230-330°C fraction (wash oil fraction) of coal tar accounted for about 10%, or about 1.6 million tons. The deep processing of coal tar has a profound impact on my country's economic development. With the rapid development of new materials and the steel industry, people are paying more and more attention to the utilization of coal tar resources. At present, my country's coal tar deep processing is still in the rough processing stage. After reprocessing, small enterprises can only produce about a dozen industrial-grade crude products. The methyl naphthalene content of the washed oil produced is low, and the washing oil index is low. Summary of the invention
[0003] The technical problem to be solved by the present invention is that the content of methyl naphthalene in the produced washing oil is low and the washing oil index is low.
[0004] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary: it includes a preheating tank, a fixedly connected feeding solenoid valve is provided at the middle and upper part of the preheating tank, a fixedly connected first heating device is provided inside the preheating tank, a preheating solenoid valve is provided at the bottom of the preheating tank, a fixedly connected material transfer pipe is provided at the other end of the preheating solenoid valve, a fixedly connected material transfer solenoid valve is provided at the other end of the material transfer pipe, a fixedly connected distillation tank is provided at the other end of the material transfer solenoid valve, an oil transfer solenoid valve is provided at the middle and upper part of the distillation tank, a fixedly connected second heating device is provided inside the distillation tank, an oil transfer pipe is fixedly connected to the other side of the oil transfer solenoid valve, and an oil storage tank is fixedly connected to the other side of the oil transfer pipe. The shape of the preheating tank is preferably cylindrical. The cylindrical shape has no sanitary dead corners and can also make the first heating device heat more evenly. The cooperation between the preheating solenoid valve and the material transfer solenoid valve can make the preheating tank form a closed space, which will not cause the distillate to be lost and heat the raw materials to 230°C more quickly. The washing oil is the distillate of 230-300°C in high-temperature coal tar. The closer the molecular weight of each component in the washing oil is to that of the benzene series, the easier it is to dissolve in each other and the higher the absorption efficiency. Therefore, the proportion of low-temperature distillate in the washing oil distillation process is relatively speaking, the better. Specifically, the distillate between 230 and 270°C in the washing oil is the main component of washing benzene. The two ends of the material pipe are connected to the preheating tank and the distillation tank respectively. The raw materials are heated to 230°C in the preheating tank, and the material transfer pipe transfers the raw materials to the distillation tank. The material transfer pipe can use natural gravity to transfer the raw materials. The preheating tank is placed on the distillation tank. The second heating device is started to heat the raw materials in the distillation tank to 270°C. The oil transfer solenoid valve is opened to transfer the distilled wash oil to the oil storage tank through the oil transfer pipe. The temperature of the distillation tank is controlled at 270-275°C to ensure that the distillation volume at 230°C is zero, and the proportion of distillates between 230 and 270°C is increased as much as possible, thereby reducing the crude naphthalene content in the wash oil and increasing the proportion of methylnaphthalene content.
[0005] The other end of the solenoid valve is fixedly connected, and the inner top of the preheating tank is provided with a preheating tank temperature control device for controlling the first heating device. The temperature control device can monitor the temperature of the raw materials in the preheating tank in real time to control the start and power of the first heating device.
[0006] The bottom of the preheating tank is in an inverted eight-shaped shape, and a cleaning port is provided at the bottom of the preheating tank, and a cleaning port solenoid valve is provided at the cleaning port. The inverted eight-shaped shape is more convenient for cleaning, and no sanitary dead corners are left. The cleaning port solenoid valve can form a closed space for the preheating tank when not in use.
[0007] The bottom of the distillation tank is in an inverted eight-shaped shape, and a distillation tank temperature control device for controlling the second heating device is provided on the inner top of the distillation tank, a feeding motor is provided in the middle of the feeding pipe, and a slag outlet is provided at the bottom of the distillation tank, and a slag outlet is provided at the slag outlet. The slag outlet is provided with a slag outlet solenoid valve. The inverted eight-shaped shape is more convenient for cleaning and does not leave sanitary dead corners. The distillation tank temperature control device can monitor the temperature of the raw materials in the distillation tank in real time to control the start and power of the first heating device. The feeding motor can transfer the raw materials more quickly. The slag outlet is more convenient at the bottom of the inverted eight-shaped shape and can slide naturally with the help of gravity. The slag outlet solenoid valve can form a closed space for the distillation tank when not in use.
[0008] The bottom of the oil storage tank is in an inverted eight-shaped shape, and an oil drain port is provided at the bottom of the oil storage tank, and an oil drain solenoid valve is provided at the oil drain port. The inverted eight-shaped shape is more convenient when draining oil, and it can flow out naturally with the help of gravity. The oil storage tank can store washing oil, saving working time. When the oil storage tank is full, the oil drain solenoid valve can be opened to transport the washing oil to the storage place. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0010] In the figure: 1. preheating tank; 11. feeding solenoid valve; 11a. feeding pipe; 12. preheating solenoid valve; 13. first heating device; 14. preheating tank temperature control device; 15. cleaning port; 15a. cleaning port solenoid valve; 2. material transfer pipe; 21. material transfer motor; 3. fraction tank; 31. material transfer solenoid valve; 32. oil transfer solenoid valve; 33. fraction tank temperature control device; 34. second heating device; 35. slag outlet; 35a. slag outlet solenoid valve; 4. oil transfer pipe; 5. oil storage tank; 51. oil drain port; 51a. oil drain solenoid valve. DETAILED DESCRIPTION
[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0012] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0013] Example 1
[0014] like Figure 1The pressurizing device for preparing washing oil from coal tar shown in the figure comprises a preheating tank 1, a fixedly connected feeding solenoid valve 11 is provided in the middle and upper part of the preheating tank 1, a fixedly connected first heating device 13 is provided inside the preheating tank 1, a preheating solenoid valve 12 is provided at the bottom of the preheating tank 1, a fixedly connected material transfer pipe 2 is provided at the other end of the preheating solenoid valve 12, a fixedly connected material transfer solenoid valve 31 is provided at the other end of the material transfer pipe 2, a fixedly connected distillation tank 3 is provided at the other end of the material transfer solenoid valve 31, an oil transfer solenoid valve 32 is provided in the middle and upper part of the distillation tank 3, a fixedly connected second heating device 34 is provided inside the distillation tank 3, an oil transfer pipe 4 is fixedly connected to the other side of the oil transfer solenoid valve 32, and an oil storage tank 5 is fixedly connected to the other side of the oil transfer pipe 4.
[0015] The other end of the solenoid valve 11 is provided with a fixed connection 11a, and the inner top of the preheating tank 1 is provided with a preheating tank temperature control device 14 for controlling the first heating device 13. The bottom of the preheating tank 1 is in an inverted eight-shaped shape, and a cleaning port 15 is provided at the bottom of the preheating tank 1, and the cleaning port 15 is provided with a cleaning port solenoid valve 15a.
[0016] A material conveying motor 21 is disposed in the middle of the material conveying tube 2 .
[0017] The bottom of the distillation tank 3 is in an inverted eight-shaped shape. A distillation tank temperature control device 33 for controlling the second heating device 34 is provided at the inner top of the distillation tank 3. A slag outlet 35 is provided at the bottom of the distillation tank 3. The slag outlet 35 is provided with a slag outlet solenoid valve 35a.
[0018] The bottom of the oil storage tank 5 is in an inverted eight-shaped shape. An oil drain port 51 is provided at the bottom of the oil storage tank 5 . The oil drain port 51 is provided with an oil drain solenoid valve 51 a .
[0019] The working principle of the present invention is as follows: the feeding solenoid valve 11 is opened to add coal tar into the preheating tank 1 through the feeding pipe 11a; when the coal tar is added, the feeding solenoid valve 11 is closed to form a closed space in the preheating tank 1; the preheating tank temperature control device 14 controls the first heating device 13 to heat the coal tar to 230°C; when the coal tar is heated to 230°C, the preheating solenoid valve 12 and the material transfer solenoid valve 31 are opened; the material transfer motor 21 transfers the 230°C coal tar through the material transfer pipe After the transfer to the distillation tank 3 is completed, the material transfer solenoid valve 31 is closed to form a closed space in the distillation tank 3. The distillation tank temperature control device 33 controls the second heating device 34 to heat the temperature of the coal tar to 270°C, and the oil transfer solenoid valve 32 is opened to transfer the distillate wash oil to the oil storage tank 5. After the transfer is completed, the oil discharge solenoid valve 51a is opened to discharge the wash oil, the slag discharge solenoid valve 35a is opened to discharge the coal slag, and then the cleaning port solenoid valve 15a is opened to clean the preheating tank 1.
[0020] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.
Claims
1. A pressurizing device for preparing washing oil from coal tar, characterized in that: The invention comprises a preheating tank (1), wherein a fixedly connected feeding electromagnetic valve (11) is provided at the middle and upper part of the preheating tank (1), a fixedly connected first heating device (13) is provided inside the preheating tank (1), a preheating electromagnetic valve (12) is provided at the bottom of the preheating tank (1), a fixedly connected material transfer pipe (2) is provided at the other end of the preheating electromagnetic valve (12), a fixedly connected material transfer electromagnetic valve (31) is provided at the other end of the material transfer pipe (2), a fixedly connected material transfer electromagnetic valve (31) is provided at the other end of the material transfer electromagnetic valve (31), a fixedly connected distillation tank (3) is provided at the other end of the distillation tank (3), an oil transfer electromagnetic valve (32) is provided at the middle and upper part of the distillation tank (3), a fixedly connected second heating device (34) is provided inside the distillation tank (3), an oil transfer pipe (4) is fixedly connected to the other side of the oil transfer electromagnetic valve (32), and an oil storage tank (5) is fixedly connected to the other side of the oil transfer pipe (4).
2. The pressurizing device for preparing washing oil from coal tar according to claim 1, characterized in that: The other end of the solenoid valve (11) is provided with a fixed connection (11a), and the inner top of the preheating tank (1) is provided with a preheating tank temperature control device (14) for controlling the first heating device (13).
3. The pressurizing device for preparing washing oil from coal tar according to claim 2, characterized in that: The bottom of the preheating tank (1) is in an inverted eight-shaped shape. A cleaning port (15) is provided at the bottom of the preheating tank (1), and a cleaning port solenoid valve (15a) is provided at the cleaning port (15).
4. The pressurizing device for preparing washing oil from coal tar according to claim 1, characterized in that: A material transfer motor (21) is provided in the middle of the material transfer pipe (2).
5. The pressurizing device for preparing washing oil from coal tar according to claim 1, characterized in that: The bottom of the distillation tank (3) is in an inverted eight-shaped shape, and a distillation tank temperature control device (33) for controlling a second heating device (34) is provided on the inner top of the distillation tank (3).
6. The pressurizing device for preparing washing oil from coal tar according to claim 5, characterized in that: The bottom of the distillation tank (3) is provided with a slag discharge port (35), and the slag discharge port (35) is provided with a slag discharge solenoid valve (35a).
7. The pressurizing device for preparing washing oil from coal tar according to claim 1, characterized in that: The bottom of the oil storage tank (5) is in an inverted eight-shaped shape. An oil drain port (51) is provided at the bottom of the oil storage tank (5), and an oil drain solenoid valve (51a) is provided at the oil drain port (51).