Purifying device for circulating water for cooling and purifying ash

Abstract

The utility model relates to the technical field of circulating water purification, in particular to a circulating water purification device for cooling and purifying ash, which comprises a slag cooler and a circulating water cooling component, the circulating water cooling component comprises a water tank and a circulating pump, the water tank is communicated with the pumping-in end of the circulating pump, the pumping-out end of the circulating pump is communicated with a jacket of the slag cooler, and the jacket is communicated with the slag cooler. A jacket of the slag cooler is communicated with the water tank, the purifying box is located on one side of the water tank, a mounting frame is arranged above the purifying box, a zeolite powder box and a stirring assembly are arranged on the mounting frame, the zeolite powder box is communicated with a discharging pipe, the discharging end of the discharging pipe faces the purifying box below, and a discharging valve is arranged on the discharging pipe; the stirring assembly is used for stirring water in the purifying box; a tap water pipe is communicated above the purification box; a water adding valve is arranged on the tap water pipe; a water conveying pipe is communicated between the purifying box and the water tank; a water conveying pump is arranged on the water conveying pipe. The circulating cooling water purification device can purify circulating cooling water of the slag cooler so as to reduce the scaling phenomenon of a circulating water pipeline of the slag cooler.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating water purification, in particular to a purification device for cooling and purifying the circulating water of ash. Background Art

[0002] Purified ash is a solid waste in the calcium carbide production process. Because it has a certain calorific value, it can be used as part of the raw material for incineration in the drying system. Usually, a cold slag machine is used to cool down the incineration slag of purified ash. Circulating water is conveyed into the jacket of the cold slag machine through a circulating water pump to exchange heat and cool the incineration slag of purified ash. However, due to the high initial temperature of the incineration slag, after water cooling, the temperature of the circulating water is too high, and the entire system water circuit needs to be cooled down.

[0003] In addition, the circulating water commonly used in industrial production is tap water. Calcium bicarbonate and magnesium bicarbonate contained in tap water begin to decompose at about 50 °C or above. Generally, the higher the water temperature, the faster the decomposition rate of calcium bicarbonate and magnesium bicarbonate. During the decomposition process of calcium bicarbonate and magnesium bicarbonate, carbon dioxide is released and converted into substances such as calcium carbonate and magnesium hydroxide that are insoluble in water. These substances will adhere to the inside of the pipeline of the circulating water system, forming water scale, which is likely to cause blockage of the inlet and outlet pipes, form a high-pressure environment inside the pipeline, pose an explosion hazard, and it is difficult to repair after the pipeline is blocked, with a high repair cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a purification device for cooling the circulating water of purified ash to solve the problem that the circulating water for cooling purified ash is prone to scale formation on the pipeline.

[0005] The utility model is realized through the following technical solutions:

[0006] A purification device for cooling the circulating water of purified ash includes a cold slag machine and a circulating water cooling component. The circulating water cooling component includes a water tank and a circulating pump. The water tank is connected to the pump inlet end of the circulating pump through a pipeline. The pump outlet end of the circulating pump is connected to the jacket of the cold slag machine through a pipeline. The jacket of the cold slag machine is connected to the water tank through a pipeline. It also includes a purification tank. The purification tank is located on one side of the water tank. An installation frame is arranged above the purification tank. A zeolite powder tank and a stirring component are arranged on the installation frame. The zeolite powder tank is connected with a discharge pipe. The discharge end of the discharge pipe faces downward to the purification tank. A discharge valve is arranged on the discharge pipe. The stirring component is used to stir the water in the purification tank. A tap water pipe is connected above the purification tank. A water filling valve is arranged on the tap water pipe. A water delivery pipe is connected between the purification tank and the water tank. A water delivery pump is arranged on the water delivery pipe. One end of the water delivery pipe located in the purification tank has a distance from the bottom wall of the purification tank.

[0007] Further, the stirring assembly includes a stirring motor and a stirring shaft. The stirring motor is arranged on the mounting frame. One end of the stirring shaft passes through the mounting frame and is rotatably connected to the mounting frame. And one end of the stirring shaft passes upward through the mounting frame and is coaxially connected to the output shaft of the stirring motor, and the other end extends downward into the purification tank. Stirring blades are arranged on the stirring shaft.

[0008] Further, a filter screen cylinder is placed in the purification tank. The filter screen cylinder is open at the top. A filter bag is sleeved outside the filter screen cylinder. One end of the water delivery pipe located in the purification tank is located inside the filter screen cylinder.

[0009] Further, a wire basket is arranged in the zeolite powder box. A desiccant bag is placed in the wire basket, and the wire basket is located above the zeolite powder.

[0010] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0011] In the utility model, first, the water adding valve is opened to add an appropriate amount of tap water into the purification tank. Then, the discharge valve is opened, and an appropriate amount of zeolite powder is added to the purification tank through the discharge pipe. While opening the discharge valve to add zeolite powder, the zeolite powder and tap water are stirred evenly by the stirring assembly. After adding the zeolite powder, it is stirred for a period of time and then left to stand for about one hour, so that the sodium ions in the zeolite powder itself are exchanged with the calcium ions and magnesium ions in the tap water, thereby achieving the effect of reducing the calcium ion and magnesium ion content in the tap water. The purified tap water is transported to the water tank through the water delivery pump. The circulating pump sends the purified tap water into the jacket of the slag cooler for heat exchange. The temperature of the tap water coming out of the jacket of the slag cooler rises. Since the calcium and magnesium ion content in the tap water is reduced, the appearance of substances such as calcium carbonate and magnesium hydroxide can be reduced, thereby reducing the formation of water scale, and the situation that the inlet and outlet water pipelines of the jacket of the slag cooler are blocked due to water scale can be reduced. The purification scheme of this solution is simple in structure and low in cost. Description of the Drawings

[0012] The drawings described herein are used to provide a further understanding of the embodiments of the utility model and constitute a part of this application, but do not limit the embodiments of the utility model.

[0013] In the drawings:

[0014] Figure 1 is a schematic structural diagram of Embodiment 1 of the utility model;

[0015] Figure 2 is of Embodiment 1 of the utility model Figure 1 Enlarged view of part A.

[0016] Markings in the drawings and corresponding component names:

[0017] 1, slag cooler; 2, water tank; 3, circulation pump; 4, purification tank; 5, mounting frame; 6, zeolite powder tank; 7, discharge pipe; 8, discharge valve; 9, tap water pipe; 10, water filling valve; 11, water delivery pipe; 12, water delivery pump; 13, stirring motor; 14, stirring shaft; 15, stirring blade; 16, filter screen cylinder; 17, filter bag; 18, wire basket; 19, desiccant bag. Specific implementation mode

[0018] To make the purpose, technical solution and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with embodiments and drawings. The illustrative implementation modes and descriptions of the present utility model are only used to explain the present utility model and do not limit the present utility model. It should be noted that the present utility model has been in the actual R & D and use stage.

[0019] Embodiment 1

[0020] A purification device for cooling and purifying the circulating water of ash, referring to Figure 1 , Figure 2 , including a slag cooler 1 and a circulating water cooling component. The circulating water cooling component includes a water tank 2 and a circulation pump 3. The water tank 2 is connected to the pump inlet end of the circulation pump 3 through a pipeline. The pump outlet end of the circulation pump 3 is connected to the jacket of the slag cooler 1 through a pipeline. The jacket of the slag cooler 1 is connected to the water tank 2 through a pipeline. One end of the jacket of the slag cooler 1 is connected to the inlet and outlet water pipe through a rotary joint. The purification device further includes a purification tank 4. The purification tank 4 is located on the ground on one side of the water tank 2. There is a mounting frame 5 above the purification tank 4. A zeolite powder tank 6 and a stirring component are arranged on the mounting frame 5. The zeolite powder tank 6 is connected with a discharge pipe 7. The discharge end of the discharge pipe 7 faces downward to the purification tank 4. A discharge valve 8 is arranged on the discharge pipe 7. The stirring component is used to stir the water in the purification tank 4. A tap water pipe 9 is connected above the purification tank 4. A water filling valve 10 is arranged on the tap water pipe 9. A water delivery pipe 11 is connected between the purification tank 4 and the water tank 2. A water delivery pump 12 is arranged on the water delivery pipe 11. There is a distance between the end of the water delivery pipe 11 located in the purification tank 4 and the bottom wall of the purification tank 4.

[0021] First, open the water filling valve 10 to add an appropriate amount of tap water into the purification tank 4. Then, open the discharge valve 8, and add an appropriate amount of zeolite powder into the purification tank 4 through the discharge pipe 7. While opening the discharge valve 8 to add zeolite powder, stir the zeolite powder and tap water evenly through the stirring assembly. After adding the zeolite powder, stir for a period of time and then let it stand for about one hour, so that the sodium ions in the zeolite powder itself exchange with the calcium ions and magnesium ions in the tap water, thereby achieving the effect of reducing the content of calcium ions and magnesium ions in the tap water. The purified tap water is transported to the water tank 2 through the water pump 12. The circulation pump 3 sends the purified tap water into the jacket of the slag cooler 1 for heat exchange. The temperature of the tap water coming out of the jacket of the slag cooler 1 rises. Since the content of calcium and magnesium ions in the tap water decreases, the appearance of substances such as calcium carbonate and magnesium hydroxide can be reduced, thereby reducing the formation of scale, and the blockage of the inlet and outlet water pipes of the jacket of the slag cooler 1 due to scale can be reduced. The purification scheme of this solution has a simple structure and low cost. Since zeolite powder particles will precipitate at the bottom of the purification tank 4, the water delivery pipe 11 is far from the bottom wall of the purification tank 4, which can reduce the situation where zeolite powder is transported into the water tank 2 and enters the circulation pipeline. In addition, since the circulating water has a relatively high water temperature during the circulation process and the evaporation loss of the circulating water is relatively large, it is necessary to replenish water into the water tank 2 regularly. After the water in the purification tank 4 is transported to the water tank 2, it is necessary to add tap water and zeolite powder to the purification tank 4 in time, aiming to purify the tap water in advance, so as to temporarily store the adsorbed tap water in the purification tank 4. When water needs to be added to the water tank 2 subsequently, starting the water pump 12 can quickly add water to the water tank 2.

[0022] As a preferred embodiment, referring to Figure 1 , Figure 2 , the stirring assembly includes a stirring motor 13 and a stirring shaft 14. The stirring motor 13 is arranged on the mounting frame 5. One end of the stirring shaft 14 passes through the mounting frame 5 and is rotationally connected to the mounting frame 5 through a bearing. And one end of the stirring shaft 14 passes upward through the mounting frame 5 and is coaxially connected to the output shaft of the stirring motor 13, and the other end extends downward into the purification tank 4. Stirring blades 15 are arranged on the stirring shaft 14. After adding tap water into the purification tank 4, open the discharge valve 8, add zeolite powder into the purification tank 4, and start the stirring motor 13 while adding zeolite powder. The stirring motor 13 drives the stirring shaft 14 and the stirring blades 15 to rotate, which is convenient for stirring the zeolite powder and tap water, making the zeolite powder more evenly distributed in the purification tank 4, and facilitating the zeolite powder to fully exert its ability to adsorb and exchange ions.

[0023] As a preferred embodiment, referring to Figure 1 , Figure 2, a filter cartridge 16 is placed inside the purification tank 4. The filter cartridge 16 is open at the top. A filter bag 17 is sleeved outside the filter cartridge 16. The water delivery pipe 11 is located at one end of the purification tank 4 and extends from the opening at the top of the filter cartridge 16 into the interior of the filter cartridge 16. It should be noted that the heights of the filter cartridge 16 and the filter bag 17 need to be higher than the liquid level of the tap water to prevent zeolite powder from entering the interior of the filter cartridge 16 when stirring the zeolite powder. The zeolite powder can be conveniently filtered outside the water delivery pipe 11 through the filter cartridge 16 and the filter bag 17, preventing the zeolite powder from being transported into the water tank 2 and then entering the circulating water system. Granular impurities are likely to accumulate and block the pipeline when entering the jacket of the slag cooler 1.

[0024] As a preferred embodiment, referring to Figure 1 , Figure 2 , a wire basket 18 is arranged inside the zeolite powder tank 6. A desiccant bag 19 is placed inside the wire basket 18, and the wire basket 18 is located above the zeolite powder. Of course, the zeolite powder tank 6 has a lid, and the wire basket 18 is also located below the lid. Since there are the purification tank 4 and the water tank 2 near the zeolite powder tank 6, the air humidity is relatively high, and moisture is likely to enter the zeolite powder tank 6, resulting in the zeolite powder becoming damp and caking. The caking of the zeolite powder will reduce the total surface area of all zeolite powder particles, thereby affecting the performance of the zeolite powder in adsorbing and exchanging ions. By means of the desiccant bag 19, the interior of the zeolite powder tank 6 can be kept dry to a certain extent, reducing the situation of zeolite powder caking.

[0025] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A purification device for cooling and purifying circulating water of ash, comprising a slag cooler (1) and a circulating water cooling component. The circulating water cooling component includes a water tank (2) and a circulating pump (3). The water tank (2) is communicated with the pump inlet end of the circulating pump (3) through a pipeline. The pump outlet end of the circulating pump (3) is communicated with the jacket of the slag cooler (1) through a pipeline. The jacket of the slag cooler (1) is communicated with the water tank (2) through a pipeline, and it is characterized in that: It further includes a purification tank (4). The purification tank (4) is located on one side of the water tank (2). An installation frame (5) is provided above the purification tank (4). A zeolite powder tank (6) and a stirring assembly are arranged on the installation frame (5). The zeolite powder tank (6) is communicated with a discharge pipe (7). The discharge end of the discharge pipe (7) faces the purification tank (4) below. A discharge valve (8) is arranged on the discharge pipe (7). The stirring assembly is used for stirring the water in the purification tank (4). A water supply pipe (9) is communicated above the purification tank (4). A water filling valve (10) is arranged on the water supply pipe (9). A water delivery pipe (11) is communicated between the purification tank (4) and the water tank (2). A water delivery pump (12) is arranged on the water delivery pipe (11). One end of the water delivery pipe (11) located in the purification tank (4) has a gap with the bottom wall of the purification tank (4).

2. The purification device for circulating water for cooling and purifying ash according to claim 1, characterized in that: The stirring assembly includes a stirring motor (13) and a stirring shaft (14). The stirring motor (13) is arranged on the installation frame (5). One end of the stirring shaft (14) passes through the installation frame (5) and is rotatably connected to the installation frame (5). And one end of the stirring shaft (14) passes upward through the installation frame (5) and is coaxially connected to the output shaft of the stirring motor (13), and the other end extends downward into the purification tank (4). Stirring blades (15) are arranged on the stirring shaft (14).

3. The purification device for circulating water for cooling and purifying ash according to claim 2, characterized in that: A filter screen cylinder (16) is placed in the purification tank (4). The filter screen cylinder (16) is open at the top. A filter bag (17) is sleeved outside the filter screen cylinder (16). One end of the water delivery pipe (11) located in the purification tank (4) is inside the filter screen cylinder (16).

4. The purification device for circulating water for cooling and purifying ash according to claim 3, characterized in that: A wire basket (18) is arranged in the zeolite powder tank (6). A desiccant bag (19) is placed in the wire basket (18), and the wire basket (18) is located above the zeolite powder.

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