A storage tank body for putty residue separation treatment

Abstract

The utility model relates to the production field of pitch, disclose a kind of storage tank body for mortar slag separation treatment, its structure includes tank body, tank body top end is connected with feed pipe, and the feed pipe is used to supply main material and blending material for tank body, tank body bottom end is provided with the taper section of diameter reducing downwards, taper section bottom end is equipped with discharge port, tank body top end is connected with gas supply pipe, gas supply pipe is inserted into tank body inside downwards, flow assisting cavity is equipped in tank body taper section, the bottom end of flow assisting cavity is communicated discharge port, the airflow of gas supply pipe supplies flow assisting cavity, the utility model is provided with flow assisting cavity by setting in taper section bottom, and gas supply pipe is cooperated with it, gas supply pipe is gas supply for tank body, so that gas is preferentially supplied to flow assisting cavity range, so that the material in flow assisting cavity is in turmoil, let the material density of discharge port close reduce, mobility changes well, without all the material in tank body is carried out sufficient stirring mixing, saves the partial energy consumption of maintaining full tank stirring.

Description

Technical Field

[0001] This utility model relates to the field of asphalt production, specifically a storage tank for separating and treating oil and ash residue. Background Technology

[0002] In the process of producing asphalt by centrifugal separation of oil ash and slag, storage tanks are needed to store and transfer the oil ash or coal tar produced during the production process. In the existing technology, in order to ensure that the material has pumpable fluidity, the storage tanks are generally directly used in the form of mixing tanks or stirring tanks. Fluidity is maintained by adding wash oil and other blending materials and by continuous stirring.

[0003] However, the purpose of storage tanks is merely to prevent severe stratification or sedimentation of materials during settling and transfer, maintaining their basic conveying capacity, far from meeting the requirement for thorough and uniform mixing of materials. The current practice of equating maintaining fluidity with continuous and thorough mixing to meet a relatively lenient anti-sedimentation requirement results in energy waste and equipment wear, and fails to adapt or modify them to meet specific needs. Utility Model Content

[0004] To address the above problems, this utility model provides a storage tank for separating and treating oil ash and slag.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a storage tank for separating and treating oil ash and slag, comprising a tank body with internal space for main materials and blending materials. A feed pipe and a secondary feed pipe are connected to the top of the tank body to supply the main materials and blending materials. A tapered section with a decreasing diameter is provided at the bottom of the tank body, with a discharge port at the bottom. An air supply pipe is connected to the top of the tank body, extending downwards into the tank body. A flow-aiding cavity is provided within the tapered section of the tank body, with its bottom end connected to the discharge port. Airflow from the air supply pipe is supplied to the flow-aiding cavity. An exhaust pipe is connected to the top of the tank body. The density of the main material within the flow-aiding cavity is less than the density of the main material in other areas of the tank body above the flow-aiding cavity, and the ratio of the space occupied by the blending materials to the space occupied by the main materials is greater than 3:1.

[0006] Furthermore, the space occupied by the mixing materials and the space occupied by the main materials in the tank have overlapping and shared portions.

[0007] Furthermore, a baffle is fixed inside the tank. The baffle is located below the exhaust outlet at the bottom of the exhaust pipe to disperse the airflow of the exhaust pipe. The location of the baffle intersects with the flow aid cavity. The baffle includes a top separation tip and a side flow surface extending downward in an umbrella shape from the separation tip. The separation tip is located at the central axis of the exhaust pipe. The airflow of the exhaust pipe flows through the separation tip and the side flow surface into the flow aid cavity on the back of the baffle. The back of the baffle is used to allow the airflow to form a transition flow.

[0008] Furthermore, the distance from the side flow surface to the central axis of the exhaust pipe is greater than the radius at the exhaust pipe outlet.

[0009] Furthermore, the barrier also includes several outwardly extending portions fixed to the outside of the barrier. The top of the outwardly extending portions and the side flow surface converge at the separation tip. The side flow surface is located between the several outwardly extending portions. The surface of the outwardly extending portions is provided with an outward flow surface. The distance from the outer edge of the outward flow surface to the central axis of the exhaust pipe is greater than the distance from the outer edge of the side flow surface to the central axis of the exhaust pipe.

[0010] Furthermore, the horizontal height of the outer edge of the outer flow surface is lower than the horizontal height of the outer edge of the side flow surface.

[0011] Furthermore, the distance from the outer edge of the outer flow surface to the central axis of the exhaust pipe is greater than the radius of the discharge port and less than the radius of the flow aid cavity.

[0012] Furthermore, the obstruction body has a lower converging section fixed at the bottom of the side flow surface, and the radius of the bottom of the lower converging section is smaller than the radius of the top and the distance from the side flow surface to the central axis of the exhaust pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention features a flow-aiding chamber at the bottom of the conical section, with an air supply pipe that supplies gas to the tank. This gas is preferentially supplied to the flow-aiding chamber, causing the material within the chamber to churn. This reduces the density and improves the flowability of the material near the outlet, eliminating the need to thoroughly mix all the material in the tank and saving energy that would otherwise be required to maintain mixing throughout the entire tank. When needed, the gas supply pressure and flow rate can be increased to further agitate the contents of the entire tank, building upon the preferential churning effect in the flow-aiding chamber.

[0014] This invention goes beyond that. A baffle is installed below the air supply pipe so that the airflow is dispersed by the umbrella-shaped structure after it is ejected, and will not directly hit the discharge port, thus avoiding interference with the discharge. At the same time, the airflow flows downward along the separation tip, side flow surface and outward extension, forming a vortex on the back of the structure. The flow in the central area of ​​the discharge port is relatively stable. When a better mixing effect is achieved in the flow aid chamber, it is conducive to the smooth discharge of materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a storage tank for separating and treating oil ash and slag according to the present invention.

[0016] Figure 2 This is a schematic diagram of the front section structure of the tank body of this utility model.

[0017] Figure 3 This is a cross-sectional view of the obstruction body of this utility model in conjunction with the exhaust pipe on the flow-aiding cavity.

[0018] Figure 4 This is a three-dimensional structural diagram of the blocking body of this utility model.

[0019] Figure 5 This is a top view of the barrier structure of this utility model.

[0020] In the diagram: 1. Tank body; 2. Main feed pipe; 3. Exhaust pipe; 4. Air supply pipe; 5. On / off valve; 6. Discharge pipe; 7. Baffle; 8. Feeder pipe; 11. Conical section; 12. Heating tube; 13. Flow aid chamber; 14. Discharge port; 15. Support; 71. Separation tip; 72. Side flow surface; 73. Lower receiving section; 74. Outward extension section; 75. Outward flow surface. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Examples, such as Figures 1-5 As shown: This utility model provides a storage tank for separating and treating oil ash and slag. Its structure includes a tank body, which is fixed to the ground by a high support, so that the bottom of the tank body is at a certain distance from the ground. The inside of the tank body has spaces for the main material and the blending material, that is, spaces occupied by the main material such as oil ash or coarse asphalt and spaces occupied by washing oil. The ratio of the space occupied by the blending material to the space occupied by the main material is greater than 3:1, that is, the two materials are in different amounts in the tank body, which will form different states, including the main material and the blending material existing alone. At this time, each of them occupies a certain layered space, or when there are too many impurities in the main material, it will also cause the main material and the blending material to have a layered phenomenon. The space occupied by the blending material and the space occupied by the main material in the tank body have overlapping and shared parts. The state of the two materials in the tank body also includes a mixture, that is, the mixture formed by the main material and the blending material, which causes the space occupied by the two to overlap and share parts.

[0023] The tank body includes a main feed pipe and a secondary feed pipe connected to the top for supplying main materials and blending materials. The bottom of the tank body has a tapered section with a decreasing diameter, and a discharge port at the bottom of the tapered section. A heating pipe is fixed inside the tank above the tapered section, heated by externally supplied circulating heat transfer oil. An air supply pipe is connected to the top of the tank, extending downwards into the tank body. A flow-aiding cavity is located within the tapered section, defined at the bottom of the tapered section. The axial height of the flow-aiding cavity is no greater than the axial height of the tapered section. (This information is provided by those skilled in the art.) The flow aid chamber can be selected according to actual needs. The bottom of the flow aid chamber is connected to the discharge port. The discharge pipe is connected to an on / off valve and further connected to the discharge pipe. Airflow from the air supply pipe supplies the flow aid chamber. An exhaust pipe is connected to the top of the tank. The air supply pipe is connected to external air supply equipment, and can be connected to an inert gas system if necessary. The exhaust pipe is connected to a tail gas treatment system. Gas entering the tank and any waste gas generated by the material is discharged through the exhaust pipe. Air is supplied to the lower part of the conical section of the tank through the air supply pipe, allowing the material to be concentrated in the pre-discharge area before it exits through the discharge port. The stirring ensures that the density of the main material in the flow aid chamber is less than that in other areas of the tank above the flow aid chamber, i.e., less than the density of areas outside the flow aid chamber. This is unrelated to whether the main material is stratified. The air pressure and flow rate of the air supply pipe can be set by those skilled in the art according to actual needs. For example, a DN150 air supply pipe can be supplied with air at a pressure of 0.3 MPa to generate enough bottom turbulence to disrupt the settling layer, thus ensuring that the discharged material has high fluidity. The wash oil can be recovered, or its proportion can be further increased to ensure fluidity. The large bubbles generated by the turbulence disperse into small bubbles and rise due to buoyancy, carrying some liquid upwards to form an upward flow. Bubbles escape at the liquid surface, and the liquid flows back down along the tank wall, forming a circulation throughout the entire tank. However, the areas with greater turbulence and large bubble generation are all in the flow aid chamber. When needed, the air supply pressure and flow rate can be increased to create a greater turbulence effect throughout the tank, based on the priority turbulence in the flow aid chamber, thereby achieving a high degree of mixing throughout the tank.

[0024] In this embodiment, in addition, a baffle is fixed inside the tank. The baffle is located below the exhaust outlet at the bottom of the exhaust pipe to disperse the airflow of the exhaust pipe and prevent the air supply pipe from directly impacting the outlet. The location of the baffle intersects with the flow aid cavity. The baffle includes a top separation tip and a side flow surface that extends downward in an umbrella shape from the separation tip. The separation tip is located at the central axis of the exhaust pipe. The airflow of the exhaust pipe flows through the separation tip and the side flow surface to the flow aid cavity on the back of the baffle. The back of the baffle is used to supply the airflow to form a transition flow. According to the unstable state of the airflow in the material, after impacting the separation tip and flowing downward along the side flow surface, turbulence will be generated on the back of the baffle. The barrier also includes several outwardly extending portions fixed to the outside of the barrier. The tops of the outwardly extending portions and the side flow surfaces converge at the separation tip. The side flow surfaces are located between the outwardly extending portions. The surface of the outwardly extending portions is provided with an outward flow surface. The distance from the outer edge of the outward flow surface to the central axis of the exhaust pipe is greater than the distance from the outer edge of the side flow surface to the central axis of the exhaust pipe, so that the outwardly extending portions are expanded on the side flow surfaces. Several side flow surfaces and several outwardly extending portions are distributed at intervals. In this embodiment, there are four side flow surfaces and four outwardly extending portions, thereby dispersing the airflow to different longitudinal ranges. Furthermore, the obstruction has a lower converging section fixed at the bottom of the side flow surface. The radius of the bottom of the lower converging section is smaller than the radius of the top and the distance from the side flow surface to the central axis of the exhaust pipe. This section attracts a portion of the airflow that separates at the edge of the side flow surface towards the center.

[0025] The distance from the side flow surface to the central axis of the exhaust pipe is greater than the radius at the exhaust pipe outlet, which causes the exhaust gas to flow preferentially along the side flow surface and the outer flow surface.

[0026] The horizontal height of the outer edge of the outer flow surface is lower than that of the outer edge of the side flow surface. Furthermore, the distance from the outer edge of the outer flow surface to the central axis of the exhaust pipe is greater than the radius of the discharge port and less than the radius of the flow aiding chamber. The airflow generated by the side flow surface surges in the middle of the flow aiding chamber but does not go too deep downwards and has not yet acted on the center of the discharge port. The outer flow surface allows the mixed airflow to act on the side of the cone section near the discharge port, so that the material flowing out of the discharge port at the bottom of the cone section will be more stable than the mixing and agitation state above and diagonally above.

[0027] In summary, during implementation, the air supply equipment is activated to supply air to the air supply pipe. The air supply pipe blows air into the flow aid chamber, and then the pre-mixed oil sludge and separately added wash oil to the tank through the main feed pipe and the auxiliary feed pipe are added to the tank. The two occupy a certain space in the tank and there are overlapping and merging parts. Large bubbles are generated in the flow aid chamber to concentrate the stirring of the material in the front area before it is discharged through the outlet. Therefore, it is not necessary to start the equipment to the bottom to stir and mix the material. It is only necessary to ensure that positive pressure is formed in the air supply pipe to generate enough to disrupt the bottom of the settling layer that may be caused by material deposition. After the airflow passes through the obstruction, it flows downward along the measuring surface and the outer surface respectively. Below the measuring surface and the outer surface, due to the instability of the shear layer, it will spontaneously develop into a turbulent jet, which will allow the material to produce a better mixing effect in the flow aid cavity, thus placing the mixing center in a local area inside the tank.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

Claims

1. A storage tank for separating and treating oil ash and sludge, comprising a tank body, characterized in that: The tank has a space for the main material and the blending material. The top of the tank is connected to a feed pipe and a secondary feed pipe for supplying the main material and the blending material into the tank. The bottom of the tank is provided with a tapered section with a downward-sloping diameter, and the bottom of the tapered section is provided with a discharge port. The top of the tank is connected to an air supply pipe that extends downward into the tank. The conical section of the tank is provided with a flow aid chamber. The bottom end of the flow aid chamber is connected to the discharge port. The airflow from the air supply pipe is supplied to the flow aid chamber. The top of the tank is connected to an exhaust pipe. The density of the main material in the flow aid chamber is less than the density of the main material in other areas of the tank above the flow aid chamber, and the ratio of the space occupied by the blending material to the space occupied by the main material is greater than 3:

1.

2. The storage tank for separating and treating oil ash and slag according to claim 1, characterized in that: The space inside the tank occupied by the mixing materials and the space occupied by the main materials have overlapping and shared parts.

3. The storage tank for separating and treating oil ash and slag according to claim 1, characterized in that: A blocking body is fixed inside the tank. The blocking body is located below the exhaust outlet at the bottom of the exhaust pipe to disperse the airflow of the exhaust pipe. The location of the blocking body intersects with the flow aid cavity. The obstruction includes a top separation tip and a side flow surface extending downward in an umbrella shape from the separation tip. The separation tip is located at the central axis of the exhaust pipe. The airflow from the exhaust pipe flows through the separation tip and the side flow surface into the flow aid cavity on the back of the obstruction. The back of the obstruction is used to provide a transition flow for the airflow.

4. The storage tank for separating and treating oil ash and sludge according to claim 3, characterized in that: The distance from the side flow surface to the central axis of the exhaust pipe is greater than the radius at the exhaust pipe outlet.

5. A storage tank for separating and treating oil ash and sludge according to claim 3, characterized in that: The barrier also includes several outwardly extending portions fixed to the outside of the barrier. The top of the outwardly extending portions and the side flow surface converge at the separation tip. The side flow surface is located between the several outwardly extending portions, and the surface of the outwardly extending portions is provided with an outward flow surface. The distance from the outer edge of the outer flow surface to the central axis of the exhaust pipe is greater than the distance from the side flow surface to the central axis of the outer edge of the exhaust pipe.

6. A storage tank for separating and treating oil ash and slag according to claim 5, characterized in that: The horizontal height of the outer edge of the outflow surface is lower than the horizontal height of the outer edge of the sideflow surface.

7. A storage tank for separating and treating oil ash and slag according to claim 5, characterized in that: The distance from the outer edge of the outer flow surface to the central axis of the exhaust pipe is greater than the radius of the discharge port and less than the radius of the flow aid cavity.

8. A storage tank for separating and treating oil ash and sludge according to claim 3, characterized in that: The obstruction body has a lower converging section fixed at the bottom of the side flow surface. The radius of the bottom of the lower converging section is smaller than the radius of the top and the distance from the side flow surface to the central axis of the exhaust pipe.

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