Multi-path water supply device for process water

Abstract

The utility model provides a multi-way water supply device for process water, which comprises a box body, a basic cavity, a first lifting cavity and a second lifting cavity are arranged in the box body, the heights of the basic cavity, the first lifting cavity and the second lifting cavity are sequentially increased, and a primary water pump is connected between a water supply pipe flange at the top end of the basic cavity and a water inlet pipe flange of the first lifting cavity. A secondary water pump is connected between the water supply pipe flange of the first lifting cavity and the water inlet pipe flange of the second lifting cavity; a plurality of water outlet pipes are respectively arranged outside the second lifting cavity in the height direction, and the water outlet pipes are respectively connected with water inlet pipes at different heights on the absorption tower; and water taking pipes are arranged in the basic cavity, the first lifting cavity and the second lifting cavity. The potential energy of the liquid in the box body is used for supplying the liquid into the absorption tower, so that the electric energy of the existing water supply mechanism is reduced, and the energy consumption of the water supply device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization technology, specifically to a multi-channel water supply device for process water. Background Technology

[0002] Flue gas desulfurization (FGD) involves the chemical absorption of sulfides, such as sulfur oxides, from flue gas using a specific slurry to remove them. In FGD, the process typically takes place in an absorption tower. Waste gas enters the tower from the bottom, and the sulfides in the waste gas react with process water to form some precipitates, such as calcium sulfate. The treated wastewater is collected separately for further treatment, and the precipitates are separated. To increase the contact area between the flue gas and process water within the absorption tower, process water is supplied to the tower via multiple water supply lines. Generally, each water supply line requires an independent pump and booster equipment; the higher the elevation, the greater the pump head required and the greater the energy consumption. Therefore, this embodiment provides a multi-line process water supply device to provide multiple water supplies with low energy consumption, thus optimizing the existing water supply system. Utility Model Content

[0003] This utility model proposes a multi-channel water supply device for process water to solve the technical problem of high energy consumption in existing water supply devices.

[0004] The technical solution of this utility model is as follows:

[0005] A multi-channel water supply device for process water includes a housing. The housing contains three chambers of progressively increasing height: a base chamber, a first lifting chamber, and a second lifting chamber. A primary water pump is connected between the top water supply flange of the base chamber and the inlet flange of the first lifting chamber. A secondary water pump is connected between the water supply flange of the first lifting chamber and the inlet flange of the second lifting chamber. Multiple outlet pipes are located outside the second lifting chamber along its height, and these outlet pipes are connected to inlet pipes at different heights on an absorption tower. Water intake pipes are provided within the base chamber, the first lifting chamber, and the second lifting chamber.

[0006] Optionally, the water intake pipe includes a water distributor and three branch pipes of different lengths: a first branch pipe, a second branch pipe, and a third branch pipe. The water distributor is equipped with three electronic valves corresponding to the first branch pipe, the second branch pipe, and the third branch pipe. The electronic valves are used to be electrically connected to the control system.

[0007] Optionally, a circulating water system is also included, which includes a water tank, a pretreatment tank, a water supply pipe, and a circulating pump. The water tank is connected to the bottom outlet of the absorption tower to receive secondary process water. The secondary process water passes through the filter screen in the water tank and then communicates with the pretreatment tank. The water supply pipe is located between the pretreatment tank and the foundation cavity, and the circulating pump is used to connect to the water supply pipe.

[0008] Optionally, the water outlet pipe may also include a valve and a pneumatic mechanism, wherein the air nozzle of the pneumatic mechanism is connected to the valve.

[0009] Optionally, a spring is provided at the outlet of the valve, and the spring is rotatably connected to the valve housing.

[0010] The principle and beneficial effects of this utility model are as follows:

[0011] In the multi-channel process water supply device provided by this utility model, the tank body is arranged with a base chamber, a first lifting chamber, and a second lifting chamber according to a stepped height difference. A primary water pump draws the liquid from the base chamber to the first lifting chamber, and a secondary water pump processes the liquid from the first lifting chamber and draws it to the second lifting chamber. The liquid in the second lifting chamber is sprayed out from different outlet pipes. Because the outlet pipes are located at different heights in the second lifting chamber, the pressure at different heights is different, allowing the outlet pipes at different heights to spray at different heights and with different ranges. This satisfies the need to supply process water to the process water inlet pipes located at different heights of the absorption tower. The potential energy of the liquid in the tank body is used to supply the liquid to the absorption tower, reducing the electrical energy of existing water supply mechanisms and lowering the energy consumption of the water supply device. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the first multi-channel water supply device for process water provided by this utility model;

[0013] Figure 2 This is a schematic diagram of the water intake pipes inside the basic cavity, the first lifting cavity, and the second lifting cavity in this utility model;

[0014] Figure 3 A schematic diagram of the structure of the second type of multi-channel water supply device for process water provided by this utility model.

[0015] Reference numerals in the attached drawings: 1: Box body; 11: Base cavity; 12: First lifting cavity; 13: Second lifting cavity; 14: Outlet pipe; 2: Inlet pipe; 3: Water distributor; 4: First branch pipe; 5: Second branch pipe; 6: Third branch pipe; 7: Electronic valve; 8: Water tank; 9: Pretreatment tank; 10: Primary water pump; 20: Secondary water pump. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] Flue gas desulfurization (FGD) involves the chemical absorption of sulfides, such as sulfur oxides, from flue gas using a specific slurry to remove them. In FGD, the process typically takes place in an absorption tower. Waste gas enters the tower from the bottom, and the sulfides in the waste gas react with process water to form some precipitates, such as calcium sulfate. The treated wastewater is collected separately for further treatment, and the precipitates are separated. To increase the contact area between the flue gas and process water within the absorption tower, process water is supplied to the tower via multiple water supply lines. Generally, each water supply line requires an independent pump and booster equipment; the higher the elevation, the greater the pump head required and the greater the energy consumption. Therefore, this embodiment provides a multi-line process water supply device to provide multiple water supplies with low energy consumption, thus optimizing the existing water supply system.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and corresponding embodiments:

[0019] First, the aforementioned absorption tower is an absorption tower used in flue gas desulfurization processes to absorb sulfur-containing substances in flue gas. Additionally, this specification includes... Figure 1 and attached Figure 3 The dashed box in the figure represents the box 1 on its left and the overall structure. The dashed box is used to represent the entire water supply structure in order to clearly show the connection effect between the water outlet pipe 14 on the box 1 and the water inlet pipe 2 on the absorption tower. Figure 2 The process water inside the cavity is represented by a wavy line.

[0020] Example 1

[0021] Please refer to the appendix to this application. Figure 1 and attached Figure 2The multi-channel process water supply device provided in this embodiment includes a housing 1. The housing 1 has three progressively increasing height base chambers 11, a first lifting chamber 12, and a second lifting chamber 13. A primary water pump 10 is connected between the top water supply pipe flange of the base chamber 11 and the inlet pipe flange of the first lifting chamber 12. A secondary water pump 20 is connected between the water supply pipe flange of the first lifting chamber 12 and the inlet pipe flange of the second lifting chamber 13. Multiple outlet pipes 14 are provided on the outside of the second lifting chamber 13 in its height direction. The outlet pipes 14 are respectively connected to the inlet pipes 2 at different heights on the absorption tower. Water intake pipes are provided in the base chamber 11, the first lifting chamber 12, and the second lifting chamber 13.

[0022] As mentioned above, in the multi-channel process water supply device provided by this utility model, the tank 1 is equipped with a base cavity 11, a first lifting cavity 12, and a second lifting cavity 13 arranged according to a stepped height difference. The liquid in the base cavity 11 is pumped to the first lifting cavity 12 by a primary water pump 10, and the liquid in the first lifting cavity 12 is pumped to the second lifting cavity 13 by a secondary water pump 20. The liquid in the second lifting cavity 13 is sprayed out from different outlet pipes 14. Because the outlet pipes 14 are at different heights in the second lifting cavity 13, the pressure at different heights is different, so that the outlet pipes 14 at different heights can spray out different heights and different ranges to meet the needs of supplying water to the process water inlet pipes 2 set at different heights of the absorption tower. The potential energy of the liquid (i.e., the aforementioned process water) in the tank 1 is used to supply the liquid to the absorption tower, which reduces the electrical energy of the existing water supply mechanism and lowers the energy consumption of the water supply device.

[0023] like Figure 2 As shown, the water intake pipe comprises a water distributor 3 and three branch pipes of different lengths: a first branch pipe 4, a second branch pipe 5, and a third branch pipe 6. The water distributor 3 is equipped with three electronic valves 7 corresponding to the first branch pipes 4, 5, and 6, respectively. These electronic valves 7 are used for electrical connection to the control system. In this embodiment, the ends of the three branch pipes 4, 5, and 6 extend to different depths in the base chamber 11, the first lifting chamber 12, and the second lifting chamber 13. This allows for individual opening to extract process water from different depths, reducing water intake energy consumption. Furthermore, two or three branch pipes can be opened simultaneously to increase the water supply. The electronic valves 7 on the water distributor 3 independently control the flow rate and inlet speed of the three branch pipes. The electrical signal of these electronic valves 7 is connected to the control system signal of the water supply device to automatically control the opening and closing of the first branch pipes 4, 5, and 6.

[0024] Example 2

[0025] Please refer to the appendix to this application. Figure 3 and attached Figure 2The multi-channel water supply device provided in this embodiment further includes a circulating water system based on the structure of the aforementioned embodiment one. The circulating water system includes a water tank 8, a pretreatment tank 9, a water supply pipe, and a circulating pump. The water tank 8 is connected to the bottom outlet of the absorption tower to receive secondary process water. The secondary process water passes through the filter screen inside the water tank 8 and then communicates with the pretreatment tank 9. The water supply pipe is located between the pretreatment tank 9 and the foundation cavity 11. The circulating pump is used to connect to the water supply pipe.

[0026] In this embodiment, considering that too much process water is sprayed into the absorption tower and directly discharged would be a waste of process water, or that the sprayed process water does not completely absorb the sulfur-containing components in the flue gas, the process water collected at the bottom of the absorption tower is recycled as secondary process water. After treatment, it is recycled back to the base chamber 11 for continued recycling, so as to achieve the purpose of fully absorbing sulfur-containing substances in the flue gas and making full use of process water, thereby improving the absorption quality of the absorption tower and improving the desulfurization effect of the process water.

[0027] Specifically, such as Figure 3 The aforementioned process for treating the recovered process water includes: firstly, removing some insoluble impurities using the filter screen in water tank 8; then, pumping it into pretreatment tank 9; after pretreatment tank 9 detects and removes some soluble impurities, secondary process water is obtained that can be introduced into the base chamber 11. This secondary process water is then sprayed back into the absorption tower using the base chamber 11, the first lifting chamber 12, and the second lifting chamber 13, thus achieving the recycling of process water. The circulation pump is installed on the water supply pipes between various devices to ensure the entire circulating water system achieves a recycling effect.

[0028] The aforementioned pretreatment tank 9 is equipped with a mechanism for removing impurities according to actual needs, and can refer to existing related designs. This embodiment does not impose specific limitations on this. In addition, there are no specific limitations on the structure of the aforementioned water tank 8 and the filter screen; existing structures can be referred to according to actual needs.

[0029] It should be noted that the aforementioned circulating water system includes detection equipment to obtain the composition of the process water in order to determine whether it meets the necessity for recirculation. That is, when there are no sulfur-containing components in its composition that can be reabsorbed, the circulation is stopped, and the water is directly discharged and enters the treatment system.

[0030] It should also be noted that in the aforementioned Embodiment 1 and Embodiment 2, the water outlet pipe 14 outside the second lifting chamber 13 further includes a valve and a pneumatic mechanism, with the air nozzle of the pneumatic mechanism connected to the valve. A spring is provided at the outlet of the valve, and the spring is rotatably connected to the valve housing. The valve and pneumatic mechanism on the water outlet pipe 14 are used to pressurize and spray the process water from the second lifting chamber 13 and control the opening and closing of the process water spray, ensuring that the process water from the water outlet pipe 14 is sprayed out in an orderly and pressurized manner, thereby improving the spraying effect of the process water into the absorption tower. The rotatable spring on the valve is used to change and increase the spraying direction of the process water within the absorption tower, thereby increasing the surface area of ​​the flue gas covered by the process water in the horizontal layer at a certain height within the absorption tower, which helps to improve the absorption effect of the absorption tower.

[0031] Finally, this utility model provides a multi-channel water supply device for process water, including a housing 1. The housing 1 contains three progressively increasing height base cavities 11, a first lifting cavity 12, and a second lifting cavity 13. A primary water pump 10 connects the top water supply flange of the base cavities 11 to the inlet flange of the first lifting cavity 12, and a secondary water pump 20 connects the water supply flange of the first lifting cavity 12 to the inlet flange of the second lifting cavity 13. Multiple outlet pipes 14 are provided on the exterior of the second lifting cavity 13 along its height direction, and these outlet pipes 14 are respectively connected to inlet pipes 2 at different heights on the absorption tower. Water intake pipes are provided in the base cavities 11, the first lifting cavity 12, and the second lifting cavity 13. This utility model utilizes the potential energy of the liquid in the housing 1 to supply liquid to the absorption tower, reducing the electrical energy of existing water supply mechanisms and lowering the energy consumption of the water supply device.

[0032] Of course, the water supply principle of this utility model can also be applied to other flue gas treatment processes, such as the process of treating carbon oxides in flue gas by absorption, or it can also be used in the process of feeding materials into the process tower. The water supply device using the water supply principle and water supply structure disclosed in this utility model is applicable to the environment in which this utility model is applied, and can be applied by analogy.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-channel water supply device for process water, characterized in that, The device includes a housing (1), which contains three progressively increasing height base chambers (11), a first lifting chamber (12), and a second lifting chamber (13). A primary water pump (10) is connected between the top water supply pipe flange of the base chamber (11) and the inlet pipe flange of the first lifting chamber (12). A secondary water pump (20) is connected between the water supply pipe flange of the first lifting chamber (12) and the inlet pipe flange of the second lifting chamber (13). Multiple outlet pipes (14) are provided outside the second lifting chamber (13) in its height direction. The outlet pipes (14) are connected to the inlet pipes (2) at different heights on the absorption tower. Water intake pipes are provided in the base chamber, the first lifting chamber, and the second lifting chamber (13).

2. The multi-channel water supply device for process water according to claim 1, characterized in that, The water intake pipe consists of a water distributor (3) and three branch pipes of different lengths: a first branch pipe (4), a second branch pipe (5), and a third branch pipe (6). The water distributor (3) is equipped with three electronic valves (7) corresponding to the first branch pipe (4), the second branch pipe (5), and the third branch pipe (6). The electronic valves (7) are used to be electrically connected to the control system.

3. The multi-channel water supply device for process water according to claim 2, characterized in that, It also includes a circulating water system, which includes a water tank (8), a pretreatment tank (9), a water supply pipe, and a circulating pump. The water tank (8) is connected to the bottom outlet of the absorption tower to receive secondary process water. The secondary process water passes through the filter screen inside the water tank (8) and then communicates with the pretreatment tank (9). The water supply pipe is located between the pretreatment tank (9) and the foundation cavity (11). The circulating pump is used to connect to the water supply pipe.

4. A multi-channel water supply device for process water according to claim 2, characterized in that, The water outlet pipe (14) also includes a valve and a pneumatic mechanism, with the air nozzle of the pneumatic mechanism connected to the valve.

5. A multi-channel water supply device for process water according to claim 4, characterized in that, The valve is provided with a spring at its outlet, and the spring is rotatably connected to the valve housing.

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