Gasification ash water scale inhibition and removal device

Abstract

The utility model relates to water treatment technical field discloses a kind of gasification ash water scale inhibition and scale removal device, including gasification furnace, the gasification furnace side is provided with air pipe, the air pipe is connected with filter water injection part, the filter water injection part inlet end is connected with water injection pipe, outlet end is connected with waste water pipe, the waste water pipe is connected with mixing box;The filter water injection part bottom is provided with a shunt cylinder, the shunt cylinder is arranged obliquely and the filter water injection part is divided into two spaces, the shunt cylinder is close to the rear space and is provided with filter mouth, two spaces pass through the filter mouth and are communicated, the filter mouth is provided with filter screen;The shunt cylinder end is provided with a cleaning port, the cleaning port is detachably provided with sealing cover;The utility model can prolong the interval length of cleaning dirt, reduce the frequency of cleaning dirt, improve the filtering efficiency, reduce labor intensity, simple structure, easy operation and use, and high practicality.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a gasification ash water scale inhibition and removal device. Background Technology

[0002] Coal gasification produces syngas, but also coal slag. Typically, cold water is mixed with the slag to form ash water, which is then treated. This ash water is filtered during treatment. Based on this, utility model patent CN219709316U discloses a scale inhibition and removal device for heterogeneous crystallization coal gasification ash water. The device includes a gasifier, a vent pipe on one side of the gasifier, a filter water injection tank on the other side of the vent pipe, a wastewater pipe below the filter water injection tank, a water inlet pipe on the top of the filter water injection tank, an electromagnetic descaling device on the outer wall of the wastewater pipe, a mixing tank at the bottom of the wastewater pipe, a motor on the top of the mixing tank, an inlet pipe on the top of the mixing tank, and a water outlet pipe on one side of the mixing tank. This heterogeneous crystallization coal gasification ash water scale inhibition and removal device, through the set filter water injection tank and water inlet pipe, can wet and mix the dust mist generated by coal gasification, filter the ash water, and freely clean the filter material.

[0003] The above solution filters large particles of dirt by installing a filter screen in the filter water tank. However, since the filter screen is set horizontally, the filtered material will quickly cover the surface of the filter screen, requiring frequent cleaning. This not only increases labor intensity but also greatly affects the filtration efficiency.

[0004] Therefore, there is an urgent need for a gasified ash water scale inhibition and removal device that can extend the cleaning time, reduce the cleaning frequency, and improve the filtration efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a gasification ash water scale inhibition and removal device that can extend the interval between cleaning of dirt, reduce the frequency of cleaning, improve filtration efficiency, reduce labor intensity, has a simple structure, is easy to operate and use, and is highly practical.

[0006] The present invention adopts the following technical solution:

[0007] A scale inhibition and descaling device for gasification ash water includes a gasifier. An air vent pipe is provided on one side of the gasifier, and the air vent pipe is connected to a filter water injection section. The inlet end of the filter water injection section is connected to a water injection pipe, and the outlet end is connected to a wastewater pipe. The wastewater pipe is connected to a mixing tank. A diversion cylinder is provided at the bottom of the filter water injection section. The diversion cylinder is arranged at an angle and divides the filter water injection section into front and rear spaces. A filter port is provided near the rear space of the diversion cylinder, and the front and rear spaces are connected through the filter port. A filter screen is provided at the filter port. A cleaning port is provided at the end of the diversion cylinder, and a detachable sealing cap is provided at the cleaning port.

[0008] Preferably, a flow divider cover is provided inside the flow divider cylinder, and the filter screen is disposed on the flow divider cover.

[0009] Preferably, the diversion hood is open at one end inside the filter water injection section, and a sealing plate is provided inside the end near the sealing cover. A sludge collection cylinder is rotatably mounted on the sealing plate, and multiple sludge collection grooves are provided on the sludge collection cylinder along the circumferential direction; a sludge collection cavity is formed between the sludge collection cylinder and the sealing cover.

[0010] Preferably, the sealing plate has guide slopes extending toward the sludge collection trough on both its inner and outer sides.

[0011] Preferably, the diversion cylinder is equipped with a motor for controlling the rotation of the sludge collection cylinder.

[0012] Preferably, the diversion cylinder is provided with a drain port that communicates with the sewage collection chamber, and a valve is provided at the drain port.

[0013] Preferably, the drain outlet is located at the bottom of the diversion cylinder.

[0014] Preferably, the front and rear sides of the filter water injection section, which connect to the top of the filter water injection section and the diverter cylinder, are both arc-shaped transitions.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model sets a diversion cylinder at the bottom of the filter water injection section at an inclination, and sets a filter screen at the filter port inside the diversion cylinder. Since the filter port is set at a certain angle to the water flow direction, when the grey water passes through, larger particles will naturally slide down the inclined surface of the filter screen to the bottom of the diversion cylinder for collection due to gravity. This avoids the adhesion of filtered particulate matter on the filter screen, ensures filtration efficiency, and also reduces cleaning frequency and labor intensity. Attached Figure Description

[0016] Figure 1 This is a front view of an embodiment of this application;

[0017] Figure 2 This is a cross-sectional view of the water injection section of an embodiment of this application. Detailed Implementation

[0018] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0019] like Figures 1 to 2 As shown, the gasification ash water scale inhibition and descaling device of this utility model includes a gasifier 1, which is used for coal combustion and reaction to form a usable mixed gas. A vent pipe 2 is provided on one side of the gasifier 1, which is used to discharge the coal ash flue gas generated by coal combustion into the filter water injection section 3. The vent pipe 2 is connected to the inlet 4 at the upper end of the filter water injection section 3. The horizontal inlet end of the filter water injection section 3 is connected to the water injection pipe, and water is transported into the filter water injection section 3 through the water injection pipe to contact the flue gas and form ash water. The outlet end of the filter water injection section 3 is connected to the wastewater pipe 5, and the wastewater pipe 5 is connected to the mixing box 6. The wastewater pipe 5 and the mixing box 6 are conventional structures in the prior art, and this application has not modified them. Therefore, they will not be described in detail. For details, please refer to the content disclosed in the utility model patent with publication number CN219709316U.

[0020] A diversion cylinder 7 is provided at the bottom of the filter water injection section 3. The diversion cylinder 7 is arranged at an angle and divides the filter water injection section 3 into two spaces, front and rear. The front and rear sides of the filter water injection section 3, which are connected to the top of the filter water injection section 3, are arc-shaped to reduce the resistance of water flow. A filter port 8 is provided near the rear space of the diversion cylinder 7. The two spaces are connected through the filter port 8. A filter screen 9 is provided at the filter port 8. A cleaning port is provided at the end of the diversion cylinder 7. A sealing cap 10 is detachably provided at the cleaning port by bolts. During operation, flue gas and water flow simultaneously enter the front space of the filter water injection section 3 to form ash water. The ash water enters the diversion cylinder 7, is filtered by the filter screen 9, and is discharged from the filter port 8 into the rear space to flow to the next process. During this process, since the filter port 8 is set at a certain angle to the water flow direction, when the ash water passes through, larger particles naturally slide down the inclined surface of the filter screen 9 due to gravity and are collected at the bottom of the diversion cylinder 7. This avoids the adhesion of filtered particulate matter on the filter screen 9, ensuring filtration efficiency and reducing cleaning frequency and labor intensity.

[0021] Furthermore, a flow divider shroud 11 is provided inside the flow divider cylinder 7, and a filter screen 9 is installed on the flow divider shroud 11; the flow divider shroud 11 can be removed from the flow divider cylinder 7 for subsequent targeted replacement, reducing the cost of inspection and maintenance. One end of the diversion hood 11 located inside the filter water injection section 3 is open, and a sealing plate 12 is installed inside the end near the sealing cover 10. A sludge collection cylinder 13 is rotatably mounted on the sealing plate 12. Multiple sludge collection troughs 14 are arranged along the circumference of the sludge collection cylinder 13 for temporary storage of filtered sludge. The sludge collection troughs 14 can be switched by rotating the sludge collection cylinder 13. The diversion cylinder 7 is equipped with a motor 15 to control the rotation of the sludge collection cylinder 13. The sludge collection troughs 14 are automatically switched by the timed rotation of the motor 15 to improve the convenience of operation. A sludge collection chamber 16 is formed between the sludge collection cylinder 13 and the sealing cover 10. By controlling the rotation of the sludge collection cylinder 13 at timed intervals, the sludge collected in the sludge collection troughs 14 can be poured into the sludge collection chamber 16. When cleaning the sludge collection chamber 16, the presence of the sludge collection cylinder 13 allows the machine to be cleaned without stopping, ensuring filtration efficiency. It is worth noting that there is a space between the sludge collection cylinder 13 and the sealing plate 12 that allows only rotation, and almost no water flows through. Even if a small amount of water flows through, it will not affect normal operation. The water entering the sludge collection chamber 16 can be discharged along with the sludge.

[0022] In addition, both the inner and outer sides of the flow divider hood 11 of the sealing plate 12 are provided with guide slopes 17 extending towards the sludge collection tank 14, so that the dirt from the filter can smoothly enter the sludge collection tank 14, and at the same time facilitate the discharge of dirt from the sludge collection tank 14 into the sludge collection chamber 16. The flow divider 7 is also provided with a drain port 18 that communicates with the sludge collection chamber 16. A valve is provided at the drain port 18, which is located at the bottom of the flow divider 7, and is used to discharge the dirt in the sludge collection chamber 16 at regular intervals without removing the sealing cover 10.

[0023] In operation, flue gas enters through the vent pipe 2 from the top of the filter water injection section 3, while water enters from one side of the filter water injection section 3. The two mix and come into contact to form ash water, which is filtered by the ash water well filter screen 9 and enters the space behind the filter water injection section 3, and then enters the wastewater pipe 5 for further treatment. The filtered particles, due to the angle between the filter port 8 and the water flow direction, naturally slide down the inclined surface of the filter screen 9 under the action of gravity into the sludge collection tank 14 for temporary collection. By controlling the motor 15 to turn on and off at regular intervals, the sludge in the sludge collection tank 14 can be poured into the sludge collection chamber 16, and finally discharged from the drain port 18 at the bottom of the sludge collection chamber 16. This utility model avoids the adhesion of filtered particles to the filter screen 9, ensuring filtration efficiency, while also reducing cleaning frequency and labor intensity, making it highly practical.

Claims

1. A scale inhibition and removal device for gasified ash water, comprising a gasifier, wherein a vent pipe is provided on one side of the gasifier, characterized in that: The vent pipe is connected to a filter water injection section. The inlet end of the filter water injection section is connected to a water injection pipe, and the outlet end is connected to a wastewater pipe. The wastewater pipe is connected to a mixing tank. A diversion cylinder is provided at the bottom of the filter water injection section. The diversion cylinder is arranged at an angle and divides the filter water injection section into two spaces, front and rear. A filter port is provided near the rear space of the diversion cylinder. The two spaces are connected through the filter port. A filter screen is provided at the filter port. A cleaning port is provided at the end of the diversion cylinder. A sealing cap is detachably provided at the cleaning port.

2. The scale inhibition and removal device for gasified ash water according to claim 1, characterized in that: The flow divider is equipped with a flow divider cover inside the flow divider cylinder, and the filter screen is installed on the flow divider cover.

3. The scale inhibition and removal device for gasified ash water according to claim 2, characterized in that: The diversion hood is open at one end inside the filter water injection section, and a sealing plate is provided inside the end near the sealing cover. A sludge collection cylinder is rotatably mounted on the sealing plate, and multiple sludge collection grooves are provided on the sludge collection cylinder along the circumferential direction; a sludge collection cavity is formed between the sludge collection cylinder and the sealing cover.

4. The scale inhibition and removal device for gasified ash water according to claim 3, characterized in that: The sealing plate has guide slopes extending towards the sludge collection tank on both its inner and outer sides.

5. The scale inhibition and removal device for gasified ash water according to claim 3, characterized in that: The diversion cylinder is equipped with a motor that controls the rotation of the sludge collection cylinder.

6. The scale inhibition and removal device for gasified ash water according to claim 3, characterized in that: The diversion cylinder is provided with a drain port that communicates with the sewage collection chamber, and a valve is provided at the drain port.

7. The scale inhibition and removal device for gasified ash water according to claim 6, characterized in that: The drain outlet is located at the bottom of the diversion cylinder.

8. The scale inhibition and removal device for gasified ash water according to claim 1, characterized in that: The top of the filter water injection section and the front and rear sides of the diversion cylinder are both arc-shaped transitions.

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