One-to-many controlled desulfurization system

Abstract

The utility model discloses a one-to-many control desulfurization system, which relates to the technical field of desulfurization and comprises a desulfurization tower body, an air inlet and a dosing box, one side of the desulfurization tower body is connected with the air inlet, an air outlet and a liquid outlet, and the dosing box is arranged on one side of the desulfurization tower body. A chemical adding pipe and a chemical discharging pipe are mounted on one side, far away from the desulfurizing tower body, of the chemical adding box. According to the one-to-many control desulfurization system, the mode that the first main circulating pump and the second main circulating pump are configured with the multiple towers is adopted, the number of circulating pumps in an original desulfurization system can be effectively reduced, operation power consumption is reduced, and on the basis that the number of the circulating pumps is effectively reduced, a first auxiliary circulating pump, a second auxiliary circulating pump and a third circulating pump are arranged; therefore, the one-to-many control desulfurization system solves the problems that when the number of the desulfurization towers is large, the number of the circulating pumps is large, the operation power consumption is high, and energy conservation and efficiency improvement cannot be well achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, and specifically relates to a desulfurization system with one-to-many control. Background Technique

[0002] Desulfurization is an important technical measure for preventing and controlling air pollution. Generally, it refers to the process of removing sulfur from fuel before combustion and removing sulfur from flue gas before discharge. It can effectively reduce the SO2 emissions in coal-fired flue gas, significantly reduce the generation of harmful gases in industrial production, protect the health of employees and improve the safety of the working environment. It can also prevent the damage of corrosive gases to equipment, extend the service life of equipment, and reduce the maintenance and replacement frequency, etc.

[0003] At present, the wet desulfurization circulating pumps in China basically adopt the one-to-one mode. One absorption tower corresponds to a group of circulating pumps, and one circulating pump corresponds to one spray layer. When there are more desulfurization towers, more circulating pumps are configured, resulting in high operating power consumption, and it is not good for energy conservation and efficiency improvement. Moreover, usually there is no standby for the circulating pumps, which is not conducive to the stable operation of the unit. Content of the Utility Model

[0004] The purpose of the utility model is to provide a desulfurization system with one-to-many control to solve the problems proposed in the above background technique, that is, when there are more desulfurization towers, more circulating pumps are configured, resulting in high operating power consumption and not being good for energy conservation and efficiency improvement.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A desulfurization system with one-to-many control, including a desulfurization tower body, an air inlet and a chemical addition tank. One side of the desulfurization tower body is connected with an air inlet, an exhaust port and a liquid discharge port. A chemical addition tank is arranged on one side of the desulfurization tower body. One side of the chemical addition tank far away from the desulfurization tower body is provided with a chemical addition pipe and a chemical discharge pipe. Four groups of the desulfurization tower bodies near the chemical addition tank are all connected with a first spray pipe and a second spray pipe;

[0006] One end of the four first spray pipes far away from the desulfurization tower body is connected with one end of a first liquid delivery pipe, the other end of the first liquid delivery pipe is connected with a first main circulating pump, one end of the four second spray pipes far away from the desulfurization tower body is connected with a second liquid delivery pipe, the other end of the second liquid delivery pipe is connected with a second main circulating pump, and the bottoms of the first main circulating pump and the second main circulating pump are both connected with the chemical addition tank through a liquid extraction pipe.

[0007] Preferably, control valves are installed on one side of the first liquid delivery pipe and the second liquid delivery pipe far away from the desulfurization tower body, and the bottoms of the first main circulating pump and the second main circulating pump are connected with a mounting frame.

[0008] Preferably, the bottom of the mounting frame is welded to the chemical addition tank, and check valves are installed inside the first spray pipe and the second spray pipe.

[0009] Preferably, a first auxiliary circulation pump, a second auxiliary circulation pump and a third circulation pump are installed on the top of the chemical addition tank, and one side of the first auxiliary circulation pump is connected to the first liquid delivery pipe through a first liquid delivery branch pipe.

[0010] Preferably, one side of the second auxiliary circulation pump is connected to the second liquid delivery pipe through a second liquid delivery branch pipe. Stop valves are installed inside both the first liquid delivery branch pipe and the second liquid delivery branch pipe. One sides of the first auxiliary circulation pump and the second auxiliary circulation pump away from the stop valves are both connected to the liquid extraction pipe on the adjacent side through a connecting pipe.

[0011] Preferably, one side of the third circulation pump is connected to the first liquid delivery pipe and the second liquid delivery pipe respectively through a diversion pipe. Shut-off valves are symmetrically installed on both sides of the diversion pipe, and the diversion pipe is arranged in a "T" shape.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this one-to-many controlled desulfurization system, by adopting the method of configuring the first main circulation pump and the second main circulation pump with multiple towers, the number of circulation pumps in the original desulfurization system can be effectively reduced, and the operating power consumption can be lowered. On the basis of effectively reducing the number of circulation pumps, a first auxiliary circulation pump, a second auxiliary circulation pump and a third circulation pump are set to ensure the stable operation of the unit, solving the problems that when there are more desulfurization towers, there are more configured circulation pumps, the operating power consumption is high, and energy conservation and efficiency improvement cannot be achieved well.

[0013] 1. For this one-to-many controlled desulfurization system, to avoid waste of resources, during use, open the control valves at the first liquid delivery pipe and the second liquid delivery pipe and the stop valves at the first spray pipe and the second spray pipe, and start the first main circulation pump and the second main circulation pump installed on the top of the mounting rack. The first main circulation pump and the second main circulation pump pump the solution inside the chemical addition tank into the first liquid delivery pipe and the second liquid delivery pipe through the liquid extraction pipe at the bottom, and direct the solution through the first liquid delivery pipe and the second liquid delivery pipe to the first spray pipe and the second spray pipe to perform spray desulfurization treatment on the flue gas inside the desulfurization tower body. This one-to-many controlled desulfurization system adopts the configuration of one circulation pump for multiple towers, which can effectively reduce the number of circulation pumps and lower the operating power consumption;

[0014] 2. For this one-to-many controlled desulfurization system, to enable the unit to operate stably continuously, when the first main circulation pump and the second main circulation pump are damaged, close the control valves at the first liquid delivery pipe and the second liquid delivery pipe, open the stop valves at the first liquid delivery branch pipe and the second liquid delivery branch pipe, and then the first auxiliary circulation pump and the second auxiliary circulation pump can be started to continue transporting the solution and continuously supply the first spray pipe and the second spray pipe with liquid. The setting of the third circulation pump can select to supplement liquid for any one pipeline by opening the corresponding shut-off valve. This one-to-many controlled desulfurization system sets multiple standby circulation pumps on the basis of effectively reducing the number of circulation pumps to ensure the stable operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view structural schematic diagram of the desulfurization tower of the present utility model;

[0016] Figure 2 This is the side view structural schematic diagram of the chemical dosing tank of the present utility model;

[0017] Figure 3 This is the top view structural schematic diagram of the desulfurization tower of the present utility model;

[0018] Figure 4 This is the three - dimensional structural schematic diagram of the desulfurization tower of the present utility model.

[0019] In the figure: 1. Desulfurization tower body; 101. Air inlet; 102. Exhaust port; 103. Liquid discharge port; 2. First spray pipe; 201. Second spray pipe; 202. Stop - flow valve; 3. First liquid delivery pipe; 301. First main circulation pump; 302. Second liquid delivery pipe; 303. Second main circulation pump; 304. Control valve; 305. Liquid extraction pipe; 306. Chemical dosing tank; 3061. Chemical addition pipe; 3062. Chemical discharge pipe; 307. Mounting frame; 4. First auxiliary circulation pump; 401. First liquid delivery branch pipe; 402. Second auxiliary circulation pump; 403. Second liquid delivery branch pipe; 404. Globe valve; 405. Connecting pipe; 406. Third circulation pump; 407. Diversion pipe; 408. Shut - off valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 . The present utility model provides a technical solution: A one - to - many controlled desulfurization system includes a desulfurization tower body 1, an air inlet 101, and a chemical dosing tank 306. One side of the desulfurization tower body 1 is connected with an air inlet 101, an exhaust port 102, and a liquid discharge port 103. A chemical dosing tank 306 is provided on one side of the desulfurization tower body 1. A chemical addition pipe 3061 and a chemical discharge pipe 3062 are installed on the side of the chemical dosing tank 306 away from the desulfurization tower body 1. Four groups of the desulfurization tower body 1 are all connected with a first spray pipe 2 and a second spray pipe 201 on the side close to the chemical dosing tank 306;

[0022] One end of the four first spray pipes 2 away from the desulfurization tower body 1 is connected to one end of the first liquid delivery pipe 3, and the other end of the first liquid delivery pipe 3 is connected to the first main circulation pump 301. One end of the four second spray pipes 201 away from the desulfurization tower body 1 is connected to the second liquid delivery pipe 302, and the other end of the second liquid delivery pipe 302 is connected to the second main circulation pump 303. The bottoms of the first main circulation pump 301 and the second main circulation pump 303 are both connected to the dosing box 306 through the liquid extraction pipe 305. A control valve 304 is installed on the side of the first liquid delivery pipe 3 and the second liquid delivery pipe 302 away from the desulfurization tower body 1. The bottoms of the first main circulation pump 301 and the second main circulation pump 303 are connected to the mounting frame 307, and the bottom of the mounting frame 307 is welded to the dosing box 306. A stop valve 202 is installed inside the first spray pipe 2 and the second spray pipe 201.

[0023] In the specific implementation, in order to avoid waste of resources, the four desulfurization tower bodies 1 are connected to the first liquid delivery pipe 3 and the second liquid delivery pipe 302 respectively through the first spray pipe 2 and the second spray pipe 201, and the first liquid delivery pipe 3 and the second liquid delivery pipe 302 are connected to the first main circulation pump 301 and the second main circulation pump 303 on the side away from the desulfurization tower body 1 respectively, so that one circulation pump can connect multiple desulfurization towers. When in use, the flue gas that has not been desulfurized is introduced into the desulfurization tower body 1 from the air inlet 101, and the control valve 304 at the first liquid delivery pipe 3, the second liquid delivery pipe 302 and the first spray pipe 2 are opened. , the stop valve 202 at the second spray pipe 201, start the first main circulation pump 301 and the second main circulation pump 303 installed on the top of the mounting frame 307, the first main circulation pump 301 and the second main circulation pump 303 pump the solution inside the dosing box 306 to the first liquid delivery pipe 3 and the second liquid delivery pipe 302 through the bottom liquid extraction pipe 305, and guide the solution to the first spray pipe 2 and the second spray pipe 201 through the first liquid delivery pipe 3 and the second liquid delivery pipe 302 to spray desulfurize the flue gas inside the desulfurization tower body 1, and after desulfurization, the flue gas will be discharged from the exhaust port 102;

[0024] Among them, the stop valve 202 can prevent the desulfurization work of other desulfurization tower bodies 1 from being affected when a single desulfurization tower body 1 is damaged and repaired. The drain port 103 at the bottom of the desulfurization tower body 1 is used for discharging the internal solution. The dosing pipe 3061 and the discharge pipe 3062 on one side of the dosing box 306 are respectively used for dosing and the export and replacement of the internal solution of the dosing box 306. The one-to-many controlled desulfurization system adopts a one-to-many tower configuration of circulating pumps, which can effectively reduce the number of circulating pumps and reduce operating power consumption.

[0025] See also Figure 2 and Figure 4It can be seen that the first auxiliary circulation pump 4, the second auxiliary circulation pump 402 and the third circulation pump 406 are installed on the top of the medicine adding box 306, one side of the first auxiliary circulation pump 4 is connected to the first liquid delivery pipe 3 through the first liquid delivery branch pipe 401, and one side of the second auxiliary circulation pump 402 is connected to the second liquid delivery pipe 302 through the second liquid delivery branch pipe 403, and the first liquid delivery branch pipe 401 and the second liquid delivery branch pipe 403 are both installed with a stop valve 404, and the first auxiliary circulation pump 4 and the second auxiliary circulation pump 402 are connected to the adjacent side of the liquid extraction pipe 305 through a connecting pipe 405. One side of the third circulation pump 406 is respectively connected to the first liquid delivery pipe 3 and the second liquid delivery pipe 302 through a guide pipe 407, and the two sides of the guide pipe 407 are symmetrically installed with a shut-off valve 408, and the guide pipe 407 is set in a "T" shape.

[0026] In the specific implementation, in order to ensure the continuous and stable operation of the unit, the first auxiliary circulation pump 4, the second auxiliary circulation pump 402 and the third circulation pump 406 are installed on the upper side of the dosing box 306. The first auxiliary circulation pump 4 is connected to the first liquid delivery pipe 3 through the first liquid delivery branch pipe 401, and the second auxiliary circulation pump 402 is connected to the second liquid delivery pipe 302 through the second liquid delivery branch pipe 403. When the first main circulation pump 301 and the second main circulation pump 303 are damaged, the control valves 30 at the first liquid delivery pipe 3 and the second liquid delivery pipe 302 are closed. 4. Open the stop valve 404 at the first liquid delivery branch pipe 401 and the second liquid delivery branch pipe 403, and start the first auxiliary circulation pump 4 and the second auxiliary circulation pump 402 to continue to transport the solution, and continue to supply liquid to the first spray pipe 2 and the second spray pipe 201. The third circulation pump 406 can be set to open the corresponding shut-off valve 408 to select any pipeline for liquid replenishment. This one-to-many controlled desulfurization system, on the basis of effectively reducing the number of circulation pumps, is equipped with multiple standby circulation pumps to ensure the stable operation of the unit.

[0027] In summary, when using the one-to-many controlled desulfurization system, the undesulfurized flue gas is introduced into the desulfurization tower body 1 from the air inlet 101, the control valve 304 and the stop valve 202 are opened, the first main circulation pump 301 and the second main circulation pump 303 are started, and the solution in the dosing box 306 is pumped into the first liquid delivery pipe 3 and the second liquid delivery pipe 302 through the bottom liquid suction pipe 305, and the solution is guided to the first spray pipe 2 and the second spray pipe 201 through the first liquid delivery pipe 3 and the second liquid delivery pipe 302 to spray desulfurize the flue gas inside the desulfurization tower body 1. After desulfurization is completed, the flue gas will be discharged from the exhaust port 102. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A desulfurization system with one-to-many control, comprising a desulfurization tower body (1), an air inlet (101) and a chemical dosing tank (306), characterized in that: One side of the desulfurization tower body (1) is connected with an air inlet (101), an exhaust outlet (102) and a liquid discharge port (103). A chemical dosing tank (306) is arranged on one side of the desulfurization tower body (1). A chemical dosing pipe (3061) and a chemical discharging pipe (3062) are installed on the side of the chemical dosing tank (306) away from the desulfurization tower body (1). Four groups of the desulfurization tower body (1) are all connected with a first spray pipe (2) and a second spray pipe (201) on the side close to the chemical dosing tank (306); One end of the four first spray pipes (2) away from the desulfurization tower body (1) is connected with one end of a first liquid delivery pipe (3), and the other end of the first liquid delivery pipe (3) is connected with a first main circulation pump (301). One end of the four second spray pipes (201) away from the desulfurization tower body (1) is connected with a second liquid delivery pipe (302), and the other end of the second liquid delivery pipe (302) is connected with a second main circulation pump (303). The bottoms of the first main circulation pump (301) and the second main circulation pump (303) are both connected with the chemical dosing tank (306) through a liquid extraction pipe (305).

2. The one-to-many controlled desulfurization system according to claim 1, wherein: Control valves (304) are installed on the sides of the first liquid delivery pipe (3) and the second liquid delivery pipe (302) away from the desulfurization tower body (1). The bottoms of the first main circulation pump (301) and the second main circulation pump (303) are connected with a mounting frame (307).

3. The one-to-many controlled desulfurization system according to claim 2, characterized in that: The bottom of the mounting frame (307) is welded to the chemical dosing tank (306). Check valves (202) are installed inside both the first spray pipe (2) and the second spray pipe (201).

4. The one-to-many controlled desulfurization system according to claim 3, characterized in that: A first auxiliary circulation pump (4), a second auxiliary circulation pump (402) and a third circulation pump (406) are installed on the top of the chemical dosing tank (306). One side of the first auxiliary circulation pump (4) is connected with the first liquid delivery pipe (3) through a first liquid delivery branch pipe (401).

5. The one-to-many controlled desulfurization system according to claim 4, characterized in that: One side of the second auxiliary circulation pump (402) is connected with the second liquid delivery pipe (302) through a second liquid delivery branch pipe (403). Shut-off valves (404) are installed inside both the first liquid delivery branch pipe (401) and the second liquid delivery branch pipe (403). The sides of the first auxiliary circulation pump (4) and the second auxiliary circulation pump (402) away from the shut-off valves (404) are both connected with the adjacent liquid extraction pipe (305) through a connecting pipe (405).

6. The one-to-many controlled desulfurization system according to claim 4, wherein: One side of the third circulation pump (406) is connected with the first liquid delivery pipe (3) and the second liquid delivery pipe (302) respectively through a diversion pipe (407). Shut-off valves (408) are symmetrically installed on both sides of the diversion pipe (407), and the diversion pipe (407) is arranged in a "T" shape.

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