Improved power plant water treatment regeneration backwashing device

Abstract

The utility model discloses an improved power plant water treatment regeneration backwashing device, which is connected with an ion exchanger and comprises a fan, a fluidization main pipe, a fluidization branch pipe, an upper air outlet connecting pipe and a lower air outlet connecting pipe. The fan is arranged outside the ion exchanger, the main fluidization pipe is transversely arranged between the quartz sand layer and the anion-cation resin layer, a partition plate for vertically separating is arranged in the main fluidization pipe, the left end of the main fluidization pipe is connected with the fan through an upper air outlet connecting pipe, and the right end of the main fluidization pipe is connected with the fan through a lower air outlet connecting pipe; the plurality of fluidization branch pipes are symmetrically arranged on the fluidization main pipe at intervals and are communicated with the fluidization main pipe; separating pieces used for vertically separating are arranged in the fluidization branch pipes, and air outlet holes are formed in the upper faces and the lower faces of the fluidization branch pipes at intervals. The utility model has the advantages of simplicity, practicability, short construction period and low cost, effectively disperses the resin caking caused by the pressure of the exchanger, can effectively reduce the phenomena of resin caking and bias flow, prolongs the operation time of the exchanger, and greatly improves the water production capacity of the exchanger.

Description

Technical Field

[0001] The utility model relates to the field of water treatment in power plants, and particularly to a regeneration backwashing device for water treatment in power plants. Background Art

[0002] Water treatment equipment is widely used in modern thermal power plants and biomass power plants (such as chicken manure power plants) for water production. Increasing water production, improving the water production environment, and enhancing the regeneration effect are important aspects that water treatment equipment must focus on. To improve the operation efficiency of water treatment equipment and ensure water quality, the water treatment equipment needs to be backwashed at regular intervals.

[0003] For water treatment equipment, such as ion exchangers, the traditional backwashing method is to introduce water from the bottom and drain water from the top. The amount of influent water affects the backwashing effect, and the backwashing influent water is manually controlled. A large flow rate will cause the quartz sand at the bottom to be disordered, and the resin will run out through the outlet valve. A small flow rate results in incomplete backwashing and caking, affecting the regeneration effect. If the ion exchanger is not backwashed thoroughly, the operating time after regeneration will be shortened, directly leading to a decrease in exchange capacity and an increase in consumption of regeneration acid and alkali. In severe cases, it may even cause shutdown or boiler outage due to a short operating cycle and insufficient water production. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a regeneration backwashing device for water treatment in power plants with good backwashing effect.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An improved regeneration backwashing device for water treatment in power plants is installed and connected to an ion exchanger. The bottom of the ion exchanger is provided with a backwashing water inlet, the top of the ion exchanger is provided with a backwashing water outlet, and a quartz sand layer and a cation and anion resin layer are arranged in the ion exchanger from bottom to top. It includes a blower, a fluidization main pipe, fluidization branch pipes, an upper air outlet connecting pipe, and a lower air outlet connecting pipe. The blower is arranged outside the ion exchanger. The fluidization main pipe is horizontally arranged between the quartz sand layer and the cation and anion resin layer. A partition plate for upper and lower separation is arranged in the fluidization main pipe. A first baffle for closing the lower part is arranged at the left end of the fluidization main pipe, and a second baffle for closing the upper part is arranged at the right end of the fluidization main pipe. The left end of the fluidization main pipe is connected to the blower through the upper air outlet connecting pipe, and the right end of the fluidization main pipe is connected to the blower through the lower air outlet connecting pipe. The fluidization branch pipes are multiple, arranged symmetrically at intervals on the fluidization main pipe and communicated with the fluidization main pipe. A partition piece for upper and lower separation is arranged in the fluidization branch pipes, and air outlet holes are arranged at intervals on the upper and lower surfaces of the fluidization branch pipes.

[0007] Preferably, the upper air outlet connecting pipe and the lower air outlet connecting pipe are connected to the air outlet pipe of the blower through a three-way valve.

[0008] Preferably, the outer wall of the fluidization branch pipe is wrapped with a metal mesh.

[0009] Preferably, both the partition plate and the partition piece are located at a lower position inside the pipe, and the partition plate is flush with the partition piece.

[0010] Preferably, the blower is a Roots blower.

[0011] After adopting the above technical solution, compared with the background technology, the present utility model has the following advantages:

[0012] 1. The present utility model introduces air into the resin through the fluidization branch pipe for stirring, effectively dispersing the resin caking caused by pressure in the exchanger, and can effectively reduce the phenomena of resin caking and "uneven flow", so as to ensure that all resins can be fully restored, improve the exchange capacity of the ion exchanger, save the consumption of acid and alkali, and reduce the waste of regeneration liquid and regeneration demineralized water.

[0013] 2. When necessary, air can be introduced into the quartz sand layer through the fluidization branch pipe, which can effectively reduce the hardening of the quartz sand layer and improve the working efficiency of the ion exchanger.

[0014] 3. The present utility model is simple and practical, has a short construction period, low cost, prolongs the operation time of the exchanger, and greatly improves the water production capacity of the exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the water treatment regeneration backwashing device of the present utility model;

[0016] Figure 2 is a schematic top view of the fluidization main pipe and the fluidization branch pipe;

[0017] Figure 3 is a schematic structural diagram of the fluidization main pipe.

[0018] DESCRIPTION OF THE REFERENCE NUMERALS:

[0019] Ion exchanger 1, backwashing water inlet 11, backwashing water outlet 12, quartz sand layer 13, anion and cation resin layer 14, blower 2, three-way valve 3, upper air outlet connecting pipe 4, lower air outlet connecting pipe 5, fluidization main pipe 6, partition plate 61, first baffle 62, second baffle 63, fluidization branch pipe 7, air outlet hole 71. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] It should be noted that in the present utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component of the present utility model must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] Embodiment

[0023] Please refer to Figure 1 、 Figure 3 As shown in the figure, the present utility model discloses an improved regeneration backwashing device for power plant water treatment, which is installed and connected to an ion exchanger 1. The bottom of the ion exchanger 1 is provided with a backwashing water inlet 11, the top of the ion exchanger 1 is provided with a backwashing water outlet 12, and a quartz sand layer 13 and a cation and anion resin layer 14 are arranged from bottom to top inside the ion exchanger 1.

[0024] The water treatment regeneration backwashing device includes a blower 2, a fluidization main pipe 6, fluidization branch pipes 7, an upper air outlet connecting pipe 4 and a lower air outlet connecting pipe 5. The blower 2 is arranged outside the ion exchanger 1, and the blower 2 is a Roots blower. The fluidization main pipe 6 is horizontally arranged between the quartz sand layer 13 and the cation and anion resin layer 14. A partition plate 61 for upper and lower separation is arranged inside the fluidization main pipe 6. A first baffle 62 for closing the lower part is arranged at the left end of the fluidization main pipe 6, and a second baffle 63 for closing the upper part is arranged at the right end of the fluidization main pipe 6. The installation positions of the first baffle 62 and the second baffle 63 correspond to the partition plate 61. The left end of the fluidization main pipe 6 is connected to the blower 2 through the upper air outlet connecting pipe 4, and the right end of the fluidization main pipe 6 is connected to the blower 2 through the lower air outlet connecting pipe 5. Specifically, the upper air outlet connecting pipe 4 and the lower air outlet connecting pipe 5 are connected to the air outlet pipe of the blower 2 through a three-way valve 3. The three-way valve 3 can be an electric control three-way valve or a manual three-way valve.

[0025] With reference to Figure 2 , there are multiple fluidization branch pipes 7, which are arranged on the fluidization main pipe 6 at intervals symmetrically and communicate with the fluidization main pipe 6. A partition piece (not shown in the figure) for upper and lower separation is arranged inside the fluidization branch pipe 7. Both the partition plate 61 and the partition piece are located at a lower position inside the pipe, and the partition piece is flush with the partition plate 61. Air outlet holes 71 are arranged at intervals on the upper and lower surfaces of the fluidization branch pipe 7. The outer wall of the fluidization branch pipe 7 is wrapped with a metal net, which can prevent resin and the like from entering the fluidization branch pipe 7.

[0026] After the ion exchanger 1 fails or its efficiency decreases, open the exhaust valve and the bottom drain valve of the ion exchanger 1. When the water level in the exchanger drops to the lower edge of the upper sight glass, close the bottom drain valve. Start the fan 2, and the three-way valve 3 controls the air intake of the upper air outlet connecting pipe 4. Air is introduced into the resin through the upward air outlet holes 71 of the fluidization branch pipe 7 for stirring. Control the air intake volume for 5 - 10 minutes. This can effectively disperse the resin caking caused by pressure in the exchanger, effectively reduce the resin caking and "flow deviation" phenomena, so as to ensure that the resin can be fully restored, improve the exchange capacity of the ion exchanger 1, save the consumption of acid and alkali, and reduce the waste of the regeneration liquid and the regenerated demineralized water.

[0027] When necessary (such as when the ion exchanger 1 has been running for too long and partial caking occurs in the quartz sand layer 13), the three-way valve 3 can be used to control the air intake of the lower air outlet connecting pipe 5, and air is introduced into the quartz sand layer 13 through the fluidization branch pipe 7, which can effectively reduce the caking of the quartz sand layer 13 and improve the working efficiency of the ion exchanger 1.

[0028] Benefit prediction of the present utility model:

[0029] If the backwashing of the ion exchanger 1 is not thorough, the operation time after regeneration will be shortened, directly resulting in a decrease in the exchange capacity and an increase in the consumption of regenerated acid and alkali. Even due to the short operation cycle and insufficient water production, it may lead to shutdown or boiler outage. Calculated according to the improvement using the present utility model, with each exchanger having a capacity of 25 tons per hour and running 20 more hours per week, the monthly production is 2000 tons. Due to the extended regeneration cycle, the number of regenerations can be reduced by four times per month; the annual savings in acid and alkali consumption is approximately 100 tons.

[0030] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An improved regeneration backwashing device for power plant water treatment, which is installed and connected to an ion exchanger. The bottom of the ion exchanger is provided with a backwashing water inlet, the top of the ion exchanger is provided with a backwashing water outlet, and a quartz sand layer and a cation and anion resin layer are arranged from bottom to top inside the ion exchanger; it is characterized in that: It includes a fan, a main fluidization pipe, fluidization branch pipes, an upper air outlet connecting pipe and a lower air outlet connecting pipe. The fan is arranged outside the ion exchanger. The main fluidization pipe is horizontally arranged between the quartz sand layer and the anion and cation resin layers. A partition plate for upper and lower separation is arranged in the main fluidization pipe. A first baffle for closing the lower part is arranged at the left end of the main fluidization pipe, and a second baffle for closing the upper part is arranged at the right end of the main fluidization pipe. The left end of the main fluidization pipe is connected to the fan through the upper air outlet connecting pipe, and the right end of the main fluidization pipe is connected to the fan through the lower air outlet connecting pipe. There are multiple fluidization branch pipes, which are symmetrically arranged at intervals on the main fluidization pipe and communicate with the main fluidization pipe. A partition piece for upper and lower separation is arranged in the fluidization branch pipe, and air outlet holes are arranged at intervals on both the upper and lower surfaces of the fluidization branch pipe.

2. The improved regeneration backwashing device for power plant water treatment according to claim 1, characterized in that: The upper air outlet connecting pipe and the lower air outlet connecting pipe are connected to the air outlet pipe of the fan through a three-way valve.

3. An improved regeneration backwashing device for power plant water treatment according to claim 1, characterized in that: The outer wall of the fluidization branch pipe is wrapped with a metal mesh.

4. An improved regeneration backwashing device for power plant water treatment according to claim 1 or 3, characterized in that: Both the partition plate and the partition piece are located at a lower position inside the pipe, and the partition plate is flush with the partition piece.

5. An improved regeneration backwashing device for power plant water treatment according to claim 1, characterized in that: The fan is a Roots blower.

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