Tar supplementing and collecting device of mechanical clarifying tank
By setting up a central oil discharge pipeline and a closed observation device in the clarification tank, the problem of ammonia water discharged along with tar is solved, the tar production and ammonia water quality is improved, and the emergency response capacity of the clarification tank and the safety of the working environment are enhanced.
Patent Information
- Application Number
- CN202420740587.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The tar discharge method of the existing clarification tank can easily lead to ammonia discharge along with the tar, affecting the production and purification quality of the tar, and being unfavorable to deal with emergencies in production.
A mechanized tar replenishment device for clarification tanks is designed, including a central oil discharge pipeline and a separator. The tar is pressed out from the central oil discharge pipeline through the central oil discharge pipeline, reducing the amount of tar at the tail of the clarification tank, improving the quality of ammonia water, and a closed observation device is set up to prevent ammonia gas leakage.
The emergency response capacity of the clarification tank is improved, the production of tar and the quality of ammonia water are improved, and the safety of ammonia water and the safety of the working environment are ensured.
Smart Images
Figure CN222623731U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coking chemical industry, in particular to a mechanized clarification tank tar supplement device. Background Art
[0002] In the production site of the coking industry, the mechanized clarification tank is a common device for separating tar and ammonia water. According to the different specific gravity of the materials, tar, ammonia water and tar residue are separated. There are three layers in the clarification tank: the upper layer is ammonia water, the middle layer is tar, and the lower layer is tar residue.
[0003] The existing tar discharge method of the clarifier, such as Figure 3 As shown, a tail oil discharge pipeline is usually set at the tail of the clarification tank, which is located below the boundary layer between tar and ammonia water. This equipment is only suitable for normal production management. In actual operation, the boundary layer between tar and ammonia water is affected by many factors such as the mixed liquid inlet rate, tar discharge rate, and ammonia tar sedimentation separation rate. Its position may be lower than the inlet position of the oil discharge pipeline, and then ammonia water is discharged from the oil discharge pipeline together with tar. The separation effect of ammonia water and tar is not ideal, which will seriously affect the output and purification quality of tar, is not conducive to dealing with emergencies and process requirements in production, and has a certain impact on normal production on site. Utility Model Content
[0004] Based on this, it is necessary to provide a mechanized clarification tank tar collection device to address the above technical problems.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a mechanized tar collecting device for a clarifier tank, comprising a clarifier tank, a tail oil discharge pipeline and a separator, wherein the input end of the tail oil discharge pipeline is connected to the tail of the clarifier tank, and the output end of the tail oil discharge pipeline is connected to the separator. A middle oil discharge pipeline is provided in the middle of the clarifier tank, the input end of the middle oil discharge pipeline is connected to the middle of the clarifier tank, and the output end of the middle oil discharge pipeline is connected to the separator. The input end of the middle oil discharge pipeline is higher than the bottom end height of the clarifier tank, a first observation port is provided at the top end of the middle oil discharge pipeline, and a first closed observation device is provided at the first observation port.
[0006] Preferably, the first closed observation device includes a sleeve, a transparent cover, a top cover, a first annular baffle and a second annular baffle. The sleeve is fixedly mounted on the middle oil drainage pipe and is sealed and connected to the middle oil drainage pipe. The transparent cover is fixedly installed in the sleeve. The transparent cover covers the top of the middle oil drainage pipe. The gap between the sleeve and the transparent cover forms an annular cavity. The first annular baffle is located in the annular cavity. The outer wall of the first annular baffle is sealed and fixedly connected to the sleeve. The inner wall of the first annular baffle is sealed and fixedly connected to the transparent cover. The first annular baffle divides the annular cavity into an upper acid storage cavity and a lower water storage cavity. The water storage cavity is used to store water, and the acid storage cavity is used to store weak acid liquid. The top cover seals and covers the top of the sleeve. The second annular baffle is fixedly installed on the inner side of the top cover. The second annular baffle closes the acid storage cavity.
[0007] Preferably, an observation pipe is installed on the top of the clarification tank, the observation pipe is connected to the input end of the tail oil discharge pipe, the lower end of the observation pipe is located in the clarification tank, the upper end of the observation pipe is located above the clarification tank and is provided with a second observation port, and a second closed observation device is provided at the second observation port.
[0008] Preferably, a first valve is installed on the tail oil discharge pipeline.
[0009] Preferably, a second valve is installed on the middle oil discharge pipeline.
[0010] Preferably, a pipe for ammonia water from a coke oven is installed on the top of the clarification tank.
[0011] Compared with the prior art, the technical solution has at least one of the following beneficial effects: by setting the middle oil discharge pipeline, the tar is pressed out from the middle pipeline, the tar at the tail of the clarifier is reduced, and the tar entrained in the ammonia water is reduced. If the oil is not collected completely in one discharge, the tail oil discharge pipeline can also collect the tar for a second time, which greatly improves the emergency response capacity of the clarifier, increases the tar output, and the quality of the ammonia water is also improved, so that the circulating ammonia water can better collect tar and cool the raw gas in the coke oven gas collecting pipe, laying the foundation for the gas cooling towers of the subsequent chemical production process;
[0012] The first observation port is sealed by setting a first closed observation device, and the second observation port is sealed by setting a second closed observation device, so that the escaped ammonia gas is absorbed step by step by water and weak acid, thereby avoiding ammonia gas leakage and ensuring the health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of a mechanized clarification tank tar collecting device according to one embodiment;
[0014] Figure 2 is a schematic structural diagram of a first closed observation device according to an embodiment;
[0015] Figure 3 It is a structural schematic diagram of the prior art;
[0016] In the figure, 1, clarification tank; 2, tail oil discharge pipeline; 21, first valve; 3, separator; 4, middle oil discharge pipeline; 41, second valve; 5, first observation port; 6, first closed observation device; 61, sleeve; 62, transparent cover; 63, top cover; 64, first annular partition; 65, second annular partition; 66, acid storage chamber; 67, water storage chamber; 7, observation pipeline; 8, second closed observation device; 9, ammonia water pipe from coke oven. DETAILED DESCRIPTION
[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0018] See also Figure 1 and Figure 2 The embodiment of the present application provides a mechanized tar collecting device for a clarification tank, comprising a clarification tank 1, a tail oil discharge pipeline 2 and a separator 3, wherein the input end of the tail oil discharge pipeline 2 is connected to the tail of the clarification tank 1, and the output end of the tail oil discharge pipeline 2 is connected to the separator 3. A middle oil discharge pipeline 4 is provided in the middle of the clarification tank 1, wherein the input end of the middle oil discharge pipeline 4 is connected to the middle of the clarification tank 1, and the output end of the middle oil discharge pipeline 4 is connected to the separator 3. The input end height of the middle oil discharge pipeline 4 is higher than the bottom end height of the clarification tank 1, and the height of the middle oil discharge pipeline 4 above the bottom end of the clarification tank 1 is greater than the accumulation thickness of the tar residue to prevent the middle oil discharge pipeline 4 from entering the tar residue, and is lower than the input end height of the tail oil discharge pipeline 2, and a first observation port 5 is provided at the top of the middle oil discharge pipeline 4, and a first closed observation device 6 is provided at the first observation port 5. The tail and middle positions of the clarification tank 1 are the tail and middle positions of the clarification tank 1 along the length direction of the clarification tank 1.
[0019] By setting up the middle oil discharge pipeline 4, due to the different densities of tar and ammonia water in the clarification tank 1, the pressure of ammonia water on the tar is used to press the tar out from the middle pipeline, so that the tar at the tail of the clarification tank 1 becomes less, and the tar entrained in the ammonia water is reduced. If the oil is not collected completely in one discharge, the tail oil discharge pipeline 2 can also collect the tar for a second time, which greatly improves the emergency response capacity of the clarification tank 1 and increases the tar output. In addition, the quality of ammonia water is also improved, so that the circulating ammonia water can better collect tar and cool the raw gas in the coke oven gas collecting pipe, laying the foundation for each gas cooling tower in the subsequent chemical production process.
[0020] Since the observation port on the existing mechanized ammonia clarification tank 1 is generally sealed with a sealing cover, the sealing performance of the sealing cover is poor, and the ammonia in the mechanized ammonia clarification tank 1 is easy to leak out through the sealing cover, causing pollution to the working environment and seriously endangering the health of the staff. Therefore, the present application sets a first closed observation device 6 to seal the first observation port 5 to prevent ammonia leakage. In a preferred embodiment, the first closed observation device 6 includes a sleeve 61, a transparent cover 62, a top cover 63, a first annular baffle 64 and a second annular baffle 65. The sleeve 61 is fixedly mounted on the middle oil discharge pipe 4 and is sealed and connected to the middle oil discharge pipe 4. The transparent cover 62 is fixedly installed in the sleeve 61. The transparent cover 62 covers the top of the middle oil discharge pipe 4. The gap between the sleeve 61 and the transparent cover 62 forms an annular cavity. The first annular baffle 64 is located in the annular cavity. The outer wall of the first annular baffle 64 is sealed and fixedly connected to the sleeve 61. The inner wall of the first annular baffle 64 is sealed and fixedly connected to the sleeve 61. The transparent cover 62 is sealed and fixedly connected, and the first annular partition 64 divides the annular cavity into an upper acid storage cavity 66 and a lower water storage cavity 67. The water storage cavity 67 is used to store water. The transparent cover 62 and the middle oil discharge pipe 4 also store water. The acid storage cavity 66 is used to store weak acid liquid. The top cover 63 seals and covers the top of the sleeve 61. The second annular partition 65 is fixedly installed on the inner side of the top cover 63, and the second annular partition 65 closes the acid storage cavity 66. Opening the top cover 63 can expose the acid storage cavity 66, which is convenient for replenishing the weak acid liquid. The weak acid liquid can be a weak acid with low volatility, such as gluconic acid, citric acid, etc.
[0021] When the ammonia in the clarification tank 1 and the middle oil discharge pipe 4 diffuses outward through the first observation port 5, the water between the transparent cover 62 and the middle oil discharge pipe 4 can isolate and absorb the ammonia, and the water in the water storage chamber 67 can also isolate and absorb the ammonia. As time changes, the water in the water storage chamber 67 absorbs ammonia and becomes ammonia water. When the seal of the first annular partition 64 fails, the weak acid liquid in the acid storage chamber 66 may enter the water storage chamber 67 and react with the ammonia water to avoid the escape of ammonia, or the concentration of ammonia water is reduced to reduce the escape of ammonia; or, the ammonia water in the water storage chamber 67 may escape ammonia, and the ammonia enters the acid storage chamber 66 and reacts with the weak acid liquid to avoid the escape of ammonia, thereby effectively avoiding the pollution of the working environment and the harm to the health of the staff due to ammonia leakage.
[0022] An opening is provided in the middle of the top cover 63 , which allows for direct viewing of the transparent cover 62 . The transparent cover 62 is made of transparent glass, and the internal situation of the first observation port 5 can be observed through the transparent cover 62 .
[0023] In order to observe the liquid level of ammonia and tar in the clarification tank 1 and the input tar of the tail oil discharge pipe 2, in a preferred embodiment, an observation pipe 7 is installed on the top of the clarification tank 1, and the observation pipe 7 is connected to the input end of the tail oil discharge pipe 2. The lower end of the observation pipe 7 is located in the clarification tank 1, and the upper end of the observation pipe 7 is located above the clarification tank 1 and is provided with a second observation port, and a second closed observation device 8 is provided at the second observation port. The second closed observation device 8 has the same structure as the first closed observation device 6, and the details are not repeated.
[0024] In order to facilitate the control of tar discharge from the tail oil discharge pipeline 2, in a preferred embodiment, a first valve 21 is installed on the tail oil discharge pipeline 2. The tail oil discharge pipeline 2 can be opened by opening the first valve 21. The oil discharge flow rate of the tail oil discharge pipeline 2 can be controlled by controlling the opening degree of the first valve 21.
[0025] In order to facilitate the control of the discharge of tar from the middle oil discharge pipeline 4, in a preferred embodiment, a second valve 41 is installed on the middle oil discharge pipeline 4. The middle oil discharge pipeline 4 can be opened by opening the second valve 41. The oil discharge flow rate of the middle oil discharge pipeline 4 can be controlled by controlling the opening degree of the second valve 41.
[0026] In order to facilitate the passage of ammonia water from the coke oven into the clarification tank 1 , in a preferred embodiment, an ammonia water pipe 9 from the coke oven is installed on the top of the clarification tank 1 .
[0027] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0028] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
Claims
1. A mechanized clarifier tar collecting device, comprising a clarifier (1), a tail oil discharge pipeline (2) and a separator (3), wherein the input end of the tail oil discharge pipeline (2) is connected to the tail of the clarifier (1), and the output end of the tail oil discharge pipeline (2) is connected to the separator (3), characterized in that: A middle oil discharge pipeline (4) is provided in the middle of the clarification tank (1); an input end of the middle oil discharge pipeline (4) is connected to the middle of the clarification tank (1); an output end of the middle oil discharge pipeline (4) is connected to the separator (3); the input end of the middle oil discharge pipeline (4) is higher than the bottom end of the clarification tank (1); a first observation port (5) is provided at the top end of the middle oil discharge pipeline (4); and a first closed observation device (6) is provided at the first observation port (5).
2. The mechanized clarification tank tar collecting device according to claim 1, characterized in that: The first closed observation device (6) comprises a sleeve (61), a transparent cover (62), a top cover (63), a first annular baffle (64) and a second annular baffle (65); the sleeve (61) is fixedly sleeved on the middle oil discharge pipeline (4) and is sealed to the middle oil discharge pipeline (4); the transparent cover (62) is fixedly installed in the sleeve (61); the transparent cover (62) covers the top of the middle oil discharge pipeline (4); a gap between the sleeve (61) and the transparent cover (62) forms an annular cavity; the first annular baffle (64) is located in the annular cavity; the first annular baffle (65) is fixedly mounted on the middle oil discharge pipeline (4) and is sealed to the middle oil discharge pipeline (4); the transparent cover (62) is fixedly installed in the sleeve (61); the transparent cover (62) covers the top of the middle oil discharge pipeline (4); a gap between the sleeve (61) and the transparent cover (62) forms an annular cavity; the first annular baffle (64) is located in the annular cavity; the first annular baffle (65) is fixedly mounted on the middle oil discharge pipeline (4) and is sealed to the middle oil discharge pipeline (4); the transparent cover (62) is fixedly mounted ... the gap between the sleeve (61) and the transparent cover (62) forms an annular cavity; the first annular baffle (64) is located in the The outer wall of the annular partition (64) is sealed and fixedly connected to the sleeve (61); the inner wall of the first annular partition (64) is sealed and fixedly connected to the transparent cover (62); the first annular partition (64) divides the annular cavity into an upper acid storage cavity (66) and a lower water storage cavity (67); the water storage cavity (67) is used to store water, and the acid storage cavity (66) is used to store weak acid liquid; the top cover (63) seals and covers the top of the sleeve (61); the second annular partition (65) is fixedly mounted on the inner side of the top cover (63); the second annular partition (65) closes the acid storage cavity (66).
3. The mechanized clarification tank tar collecting device according to claim 1, characterized in that: An observation pipe (7) is installed on the top of the clarification tank (1), the observation pipe (7) is connected to the input end of the tail oil discharge pipe (2), the lower end of the observation pipe (7) is located in the clarification tank (1), the upper end of the observation pipe (7) is located above the clarification tank (1) and is provided with a second observation port, and a second closed observation device (8) is provided at the second observation port.
4. The mechanized clarification tank tar collecting device according to claim 1, characterized in that: A first valve (21) is installed on the tail oil discharge pipeline (2).
5. The mechanized clarification tank tar collecting device according to claim 1, characterized in that: A second valve (41) is installed on the middle oil discharge pipeline (4).
6. The mechanized clarification tank tar collecting device according to claim 1, characterized in that: A coke oven ammonia water pipe (9) is installed on the top of the clarification tank (1).