Slag-resistant wear-resistant body high-flash buffer tank
By adding a recessed solid-liquid return device to the buffer tank bottom plate and adding a water beam device to the upper part of the tank body, the existing buffer tank bottom plate and tank body are easily washed away, effectively preventing black water erosion, extending the equipment operation time and reducing maintenance costs.
Patent Information
- Application Number
- CN202421553431.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The bottom plate and tank body of the existing buffer tank are easily washed and worn by high-pressure fluid, resulting in rupture, and it is impossible to effectively prevent the erosion of the buffer tank by black water.
Add a recessed solid-liquid return device to the bottom plate of the buffer tank, and use the impact force after the high-speed jet of the fluid to block the solid-liquid impulse; add a water beam device to the upper part of the buffer tank body to reduce the flow of the fluid through turbulence and maintain the liquid level to resist the impulse of solid slag and water.
Effectively prevent black water from eroding the buffer tank, extend the online running time of the buffer tank, reduce wear of the tank body and bottom plate, reduce maintenance and repair costs, and stabilize the operation of the flash evaporation system.
Smart Images
Figure CN222834029U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a slag-resistant and wear-resistant high-flash buffer tank, belonging to the technical field of buffer tanks. Background Art
[0002] The black water from the gasifier is reduced to 1.0MPa after being reduced by the pressure reducing regulating valve at 6.0MPa. The fluid enters the low-pressure area from the high-pressure area to achieve flash evaporation. The black water contains certain solids. After entering the buffer tank, since the buffer tank is an ordinary 20# tank body and 20# bottom plate, the bottom plate is easily eroded and worn by the high-pressure fluid, causing the buffer tank bottom plate and tank body to rupture and stop. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a high-flash buffer tank with slag resistance and wear resistance. The device adds a recessed solid-liquid reflection device on the bottom plate of the buffer tank. The recessed solid-liquid reflection device mainly relies on the impact force after the reflection of the high-speed fluid jet, and gathers the reflected impact force at one point to block and resist the solid-liquid impact force in the black water, so as to eliminate and weaken the impact force of the high-speed fluid impact. The device adds a water-binding device in the upper middle part of the buffer tank body, which is mainly used to bind water. The lower part of the water-binding device makes the fluid as turbulent as possible, weakens the flow of the fluid, makes it violently turbulent in the device, and maintains a certain liquid level, so as to resist the impact of solid slag and water with water.
[0004] In the first aspect, the utility model provides a slag-resistant and wear-resistant high-flash buffer tank, comprising a buffer tank body, a water-beaming device, a recessed solid-liquid reflection device and a buffer tank bottom plate. The buffer tank body is sealed and fixedly connected to the buffer tank bottom plate. The water-beaming device is arranged inside the buffer tank body. The inner diameter of the water-beaming device inlet is smaller than the inner diameter of the buffer tank body. The recessed solid-liquid reflection device is arranged at the inner bottom of the water-beaming device. The recessed solid-liquid reflection device is located above the buffer tank bottom plate.
[0005] Preferably, the water-binding device is a tank body which is hollow inside and has upper and lower bottom surfaces penetrating therethrough.
[0006] Preferably, the inner diameter of the water-binding device inlet is greater than or equal to the buffer tank inlet.
[0007] Preferably, the cross-section of the bottom of the recessed solid-liquid reflecting device is circular, a recessed area is formed in the middle of the top of the recessed solid-liquid reflecting device, between the outer edge of the recessed solid-liquid reflecting device and the water beam device, and the cross-section of the recessed solid-liquid reflecting device is in an "m" shape.
[0008] Preferably, the diameter of the circular surface at the highest point of the recessed area is 14 inches.
[0009] Preferably, a cladding layer is included, and the cladding layer is arranged between the water binding device and the body of the buffer tank.
[0010] Preferably, a solid slag accumulation area is included, and the solid slag accumulation area is located between the outer edge of the recessed solid-liquid reflecting device and the water binding device.
[0011] Preferably, a pressure reducing valve is included and is arranged at the inlet of the buffer tank.
[0012] Preferably, it includes a pipeline from the gasifier to the high-pressure flashover, and the pipeline from the gasifier to the high-pressure flashover is connected to the inlet of the buffer tank through a pressure reducing valve.
[0013] Preferably, it includes a pipeline to a high-pressure flash outlet, the pipeline to the high-pressure flash outlet is connected to the buffer tank body, and the pipeline to the high-pressure flash outlet is located above the water beam device.
[0014] Beneficial effects achieved by the utility model:
[0015] This device adds a concave solid-liquid reflection device on the bottom plate of the buffer tank. The concave solid-liquid reflection device mainly relies on the impact force after the high-speed fluid jet is reflected, and gathers the reflected impact force at one point to block and resist the solid-liquid impact force in the black water, so as to eliminate and weaken the impact force of the high-speed fluid jet. This device adds a water-binding device in the upper middle part of the buffer tank body, which is mainly used to bind water. The lower part of the water-binding device makes the fluid as turbulent as possible, weakens the flow of the fluid, makes it violently turbulent in the device, and maintains a certain liquid level, so that water can resist the impact of solid slag and water.
[0016] This device can prevent black water from scouring the tank body and bottom plate of the buffer tank, extend the online operation time of the buffer tank, effectively reduce the scouring and leakage of the tank body and bottom plate of the buffer tank, thereby ensuring the normal operation of the equipment, reducing maintenance and repair costs, and effectively stabilizing the operation of the flash evaporation system. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1 It is a structural diagram of the prior art;
[0019] Figure 2 is a structural diagram of some embodiments of the present application;
[0020] Meaning of the reference numerals: 1-pressure reducing valve; 2-gasification furnace pipeline to high-speed flashover; 3-buffer tank inlet; 4-water beam device; 5-depressed solid-liquid reflection device; 6-pipeline to high-speed flashover outlet; 7-solid slag accumulation area; 8-buffer tank bottom plate; 9-welding layer. DETAILED DESCRIPTION
[0021] To facilitate the technical solution of the application, some concepts involved in the application are first explained below.
[0022] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, they are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0023] In addition, if the descriptions of "first" and "second" etc. are involved in the present utility model, they are only used for descriptive purposes and cannot be understood as indicating or implying their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0024] like Figure 1 As shown, the water-coal slurry process works under high pressure and high temperature. In order to recycle black water (water containing a certain amount of solids), the gasifier outlet water is reduced in pressure by a pressure reducing valve at a temperature of 230°C and enters the buffer tank. The material of the buffer tank body and the bottom plate are both 20#; the final pressure out of the buffer tank is 1.0MPa. The diameter of the buffer tank is 24 inches, the total height of the buffer tank is 1.5 meters, the fluid inlet inlet diameter is 8 inches CL900, and the outlet is 6 inches CL900 through the pressure reducing regulating valve; then it is sprayed into the buffer tank, so a reducer is added between the valve and the buffer tank, changing from 6 inches to 14 inches. Disadvantages of this device: 1. The material of the tank bottom and the tank body is 20#. Since the 20# material is not resistant to scouring, the fluid directly scours the bottom plate and the tank body after entering the buffer tank. 2. After the high-speed jet fluid enters the buffer tank, the fluid stays in the buffer tank for too short a time and immediately goes to the high flash through the outlet pipeline.
[0025] See also Figure 1The present application discloses a high-flash buffer tank with slag resistance and wear resistance, including a buffer tank body, a water-beaming device 4, a concave solid-liquid reflection device 5 and a buffer tank bottom plate 8. The buffer tank body is sealed and fixedly connected to the buffer tank bottom plate 8. The water-beaming device 4 is arranged inside the buffer tank body. The inner diameter of the inlet of the water-beaming device 4 is smaller than the inner diameter of the buffer tank body. The concave solid-liquid reflection device 5 is arranged at the inner bottom of the water-beaming device 4. The concave solid-liquid reflection device 5 is located above the buffer tank bottom plate 8. The device adds a concave solid-liquid reflection device on the bottom plate of the buffer tank. The concave solid-liquid reflection device mainly relies on the impact force after the reflection of the high-speed jet of the fluid to gather the reflected impact force to one point, which is used to block and resist the solid-liquid impact force in the black water, so as to eliminate and weaken the impact force of the high-speed fluid impact. The device adds a water-beaming device in the upper and middle part of the buffer tank body, which is mainly used for water-beaming. The turbulent fluid is made as much as possible at the lower part of the water-beaming device to weaken the flow of the fluid, so that it can flow violently in the device, and maintain a certain liquid level, so as to resist the impact of solid slag and water with water. This device can prevent black water from scouring the tank body and bottom plate of the buffer tank, extend the online operation time of the buffer tank, effectively reduce the scouring and leakage of the tank body and bottom plate of the buffer tank, thereby ensuring the normal operation of the equipment, reducing maintenance and repair costs, and effectively stabilizing the operation of the flash evaporation system.
[0026] In the embodiment of the present application, the water-binding device 4 is a tank body which is hollow inside and has upper and lower bottom surfaces penetrating therethrough.
[0027] In the embodiment of the present application, the inner diameter of the inlet of the water-binding device 4 is greater than or equal to the inlet 3 of the buffer tank.
[0028] In the embodiment of the present application, the cross-section of the bottom of the recessed solid-liquid reflection device 5 is circular, and a recessed area is formed in the middle of the top of the recessed solid-liquid reflection device 5, between the outer edge of the recessed solid-liquid reflection device 5 and the water beam device 4, and the cross-section of the recessed solid-liquid reflection device 5 is in an "m" shape.
[0029] In the embodiment of the present application, the diameter of the circular surface where the highest point of the recessed area is located is 14 inches.
[0030] In the embodiment of the present application, a surfacing layer 9 is included, and the surfacing layer 9 is arranged between the water binding device 4 and the buffer tank body.
[0031] In the embodiment of the present application, a solid slag accumulation area 7 is included, and the solid slag accumulation area 7 is located between the outer edge of the recessed solid-liquid reflection device 5 and the water beam device 4 .
[0032] In the embodiment of the present application, a pressure reducing valve 1 is included, and the pressure reducing valve 1 is arranged at the inlet 3 of the buffer tank.
[0033] In the embodiment of the present application, a pipeline 2 from the gasifier to the high-pressure flashover is included, and the pipeline 2 from the gasifier to the high-pressure flashover is connected to the buffer tank inlet 3 through a pressure reducing valve 1.
[0034] In the embodiment of the present application, a pipeline 6 to a high-pressure flash outlet is included, the pipeline 6 to a high-pressure flash outlet is connected to a buffer tank body, and the pipeline 6 to a high-pressure flash outlet is located above the water beam device 4 .
[0035] 1. The jet nozzle sprays solid-containing fluid from the 6-inch water inlet pipe to the inlet of the buffer tank. As the jet lengthens, the diameter of the solid-containing fluid increases. When the diameter of the jet increases to 14 inches, it jets vertically to the bottom of the buffer tank, so a water-binding device with a 14-inch opening is added.
[0036] 2. Add a water beam device at a height of 1 meter inside the buffer tank to prevent and reduce the speed of the fluid leaving the buffer tank, thereby increasing the fluid level at the bottom of the buffer tank; equivalent to increasing the liquid level by 1 meter for blocking. The water beam device intercepts a part of the solid fluid and stores a certain amount of solid slag. The solid content in the solid-liquid increases, achieving the effect of using slag to resist the impact of slag. When the jet enters the water beam device, the space inside the water beam device decreases, and the intensity of turbulence in the space increases, achieving the effect of using liquid turbulence to resist the jet.
[0037] 3. A concave solid-liquid reflector is installed at the center of the bottom plate of the buffer tank. The concave circle has a diameter of 14 inches. When the solid-liquid fluid jets onto the concave solid-liquid reflector, it causes the transfer of self-energy and turns to the reverse direction. With the change of the elliptical surface, the reverse jets finally converge at the center point to achieve the purpose of blocking. The edge of the concave solid-liquid reflector is made into a gentle slope solid storage space. The bottom plate of the buffer tank is 24 inches CL300. The inner diameter of the circle where the highest point of the concave solid-liquid reflector is located is 14 inches. A solid slag storage area is formed at the gentle slope slag storage area with a circle diameter of about 10 inches wide at the concave solid-liquid reflector, achieving the purpose of slag against slag and reducing the cost of material investment.
[0038] like Figure 2 As shown, the process is based on the original buffer tank size and height unchanged, with the addition of a wear-resistant water beam device, a tank body 316 surfacing, and a concave solid-liquid return device. After the black water passes through the pressure reducing valve, the fluid jet enters the buffer tank, first passes through the 6-inch water inlet pipe, and then forms a cylindrical jet zone after passing through the 14-inch buffer tank inlet, enters the water beam device, and then impacts the bottom plate of the buffer tank, and reflects back to form a 14-inch low cone. This cone flows upward at the bottom of the buffer tank and collides with the cylindrical jet body to form a collision zone. The direct scouring of the bottom plate by the jet body is reduced. In addition, the water beam device is filled with turbulent fluid, which weakens the jet of the jet body to a certain extent.
[0039] The water beam device has an outer diameter of 24 inches, an inner diameter of 14 inches, a pipe wall thickness of 40 mm, and is made of wear-resistant alloy steel. The recessed solid-liquid reflection device 5 is 316 alloy, welded on the floor, with a cladding layer 9. There are many models of pressure reducing valve 1, gasification furnace high-flash pipeline 2, and high-flash outlet pipeline 6 that can be used in the prior art. Those skilled in the art can choose according to actual needs, and no examples are given in this embodiment.
[0040] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.
[0041] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not invented by the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.
[0042] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.
Claims
1. A slag-resistant and wear-resistant high-flash buffer tank, characterized in that: The invention comprises a buffer tank body, a water-binding device (4), a recessed solid-liquid reflecting device (5) and a buffer tank bottom plate (8); the buffer tank body is sealed and fixedly connected to the buffer tank bottom plate (8); the water-binding device (4) is arranged inside the buffer tank body; the inner diameter of the inlet of the water-binding device (4) is smaller than the inner diameter of the buffer tank body; the recessed solid-liquid reflecting device (5) is arranged at the bottom of the inner side of the water-binding device (4); and the recessed solid-liquid reflecting device (5) is located above the buffer tank bottom plate (8).
2. The slag-resistant and wear-resistant high-flash buffer tank according to claim 1 is characterized in that: The water-binding device (4) is a tank body which is hollow inside and has upper and lower bottom surfaces penetrating therethrough.
3. The slag-resistant and wear-resistant high-flash buffer tank according to claim 2 is characterized in that: The inner diameter of the inlet of the water-binding device (4) is greater than or equal to the inlet of the buffer tank (3).
4. The slag-resistant and wear-resistant high-flash buffer tank according to claim 1 is characterized in that: The cross section of the bottom of the recessed solid-liquid reflecting device (5) is circular, a recessed area is formed in the middle of the top of the recessed solid-liquid reflecting device (5), between the outer edge of the recessed solid-liquid reflecting device (5) and the water beaming device (4), and the cross section of the recessed solid-liquid reflecting device (5) is in the shape of an "m".
5. The slag-resistant and wear-resistant high-flash buffer tank according to claim 4 is characterized in that: The diameter of the circular surface where the highest point of the concave area is located is 14 inches.
6. The slag-resistant and wear-resistant high-flash buffer tank according to any one of claims 1 to 5, characterized in that: It comprises a surfacing layer (9), wherein the surfacing layer (9) is arranged between the water binding device (4) and the body of the buffer tank.
7. The slag-resistant and wear-resistant high-flash buffer tank according to claim 6 is characterized in that: It comprises a solid slag accumulation area (7), wherein the solid slag accumulation area (7) is located between the outer edge of the recessed solid-liquid reflection device (5) and the water beam device (4).
8. The slag-resistant and wear-resistant high-flash buffer tank according to claim 6 is characterized in that: The invention comprises a pressure reducing valve (1), wherein the pressure reducing valve (1) is arranged at an inlet (3) of a buffer tank.
9. The slag-resistant and wear-resistant high-flash buffer tank according to claim 8, characterized in that: The invention comprises a pipeline (2) from a gasifier to a high-pressure flashover. The pipeline (2) from a gasifier to a high-pressure flashover is connected to an inlet (3) of a buffer tank via a pressure reducing valve (1).
10. The slag-resistant and wear-resistant high-flash buffer tank according to claim 9, characterized in that: The high-pressure flashover outlet pipeline (6) is included. The high-pressure flashover outlet pipeline (6) is connected to the buffer tank body. The high-pressure flashover outlet pipeline (6) is located above the water beam device (4).