Novel efficient desulfurization slurry adding system

Abstract

The utility model discloses a novel efficient desulfurization slurry adding system, which relates to the technical field of desulfurization, and comprises an absorption tower body, an absorbent slurry box and a second slurry circulating pump, the outer side of the absorption tower body is provided with an air inlet pipe and an exhaust pipe, the absorption tower body is internally provided with a slurry layer, a pH meter is inserted in the slurry layer, and the pH meter is connected with the absorbent slurry box. The PH meter is connected with the absorption tower body in a penetrating manner. According to the novel efficient desulfurization slurry adding system, absorption slurry is injected into a pipeline in front of a second slurry circulating pump through an absorbent slurry pump, a suction pipe, a conveying pipe and a flow meter and is directly sprayed through a second spraying layer branched by the slurry circulating pipeline, the concentration of an alkaline absorbent for atomizing and spraying the slurry is higher, the absorption effect is better, and the concentration of SO2 at an exhaust pipe is higher; the slurry adding amount is directly adjusted, the system reaction is faster, and the novel efficient desulfurization slurry adding system solves the problems that an existing desulfurization slurry adding system is complex, and the adjusting time is long.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to a novel and efficient desulfurization slurrying system. Background Art

[0002] The industrial wet flue gas desulfurization equipment has a history of many years. After continuous improvement, development and perfection, it has become mature and widely used. It dominates the desulfurization market, especially the desulfurization of large-capacity units, accounting for about 85% of the installed capacity of power plants. The capacity of a single unit has reached 1000MW. Wet flue gas desulfurization has the advantages of mature and reliable technology, cheap and easy-to-obtain absorbents used in the reaction, stable system operation, and wide adaptability to changes in coal types and unit loads. Its desulfurization efficiency is as high as 95% and above, and it is suitable for large-capacity units.

[0003] The existing desulfurization slurry adding system consists of an absorbent slurry pump, an absorption tower, a slurry circulation pump and a spray layer. When in use, the absorbent slurry is transported to the absorption tower via the absorbent slurry pump, and the slurry circulation pump draws the slurry from the bottom of the tower to the spray layer for spraying, which makes the system complicated and takes a long time to adjust. Utility Model Content

[0004] The utility model aims to provide a novel and efficient desulfurization and pulping system to solve the problems of the existing desulfurization and pulping system being complicated and having a long adjustment time proposed in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a new and efficient desulfurization slurry system, including an absorption tower body, an absorbent slurry tank and a second slurry circulation pump,

[0006] An air inlet pipe and an exhaust pipe are installed on the outside of the absorption tower body, a slurry layer is arranged inside the absorption tower body, a pH meter is plugged into the slurry layer, and the pH meter is connected to the absorption tower body through a first slurry circulation pump and a second slurry circulation pump are arranged on one side of the absorption tower body, and one side of the first slurry circulation pump and the second slurry circulation pump are connected to the absorption tower body through a liquid extraction pipe, respectively, and the tops of the first slurry circulation pump and the second slurry circulation pump are connected to the absorption tower body through a liquid infusion pipe and a slurry circulation pipeline, respectively, and the side of the liquid infusion pipe away from the first slurry circulation pump is connected to the first spray layer;

[0007] An absorbent slurry tank is arranged on one side of the absorption tower body, an absorbent storage tank is installed on the top of the absorbent slurry tank, and an absorbent slurry pump is arranged on one side of the absorbent storage tank.

[0008] Preferably, one side of the absorbent slurry pump is connected to the absorbent slurry tank through a suction pipe, and the top of the absorbent slurry pump is connected to one end of a delivery pipe.

[0009] Preferably, the other end of the delivery pipe is connected to the liquid extraction pipe on one side of the second slurry circulation pump, and a flow meter is installed in the middle of the delivery pipe.

[0010] Preferably, an electric regulating door is installed on the outer side of the liquid extraction pipe, and the side of the slurry circulation pipeline away from the second slurry circulation pump is connected to the second spray layer.

[0011] Preferably, an absorption tower tray is installed inside the absorption tower body, and the absorption tower tray is located between the first spray layer and the slurry layer.

[0012] Preferably, an agitator is installed in the middle of the absorbent slurry tank, and a SO2 concentration monitor is installed on the outside of the exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the new and efficient desulfurization slurry adding system adds the absorption slurry into the pipeline in front of the second slurry circulation pump through the absorbent slurry pump, suction pipe, delivery pipe and flow meter, and directly sprays it through the second spray layer of the slurry circulation pipeline branch. The alkaline absorbent concentration of the atomized spray slurry is higher and the absorption effect is better. The slurry adding amount is directly adjusted by the SO2 concentration at the exhaust pipe, and the system responds more quickly, solving the problems of the existing desulfurization slurry adding system being complicated and having a long adjustment time.

[0014] 1. This new and efficient desulfurization slurrying system is to simplify the desulfurization slurrying system. When spraying, the absorbent slurry pump is started. The absorbent slurry pump extracts quantitatively proportioned slurry from the absorbent slurry tank through a suction pipe on one side, and quantitatively delivers the slurry through a delivery pipe to the infusion pipe on one side of the second slurry circulation pump through a flow meter. After mixing with the solution in the infusion pipe, the mixed solution is delivered to the second spraying layer through the slurry circulation pipeline by the second slurry circulation pump for pressurized atomization and spraying, and reacts with the flue gas entering the absorption tower body from the air inlet pipe. This new and efficient desulfurization slurrying system adds the absorbent slurry in front of the slurry circulation pipeline for direct spraying, so that the absorbent concentration is higher and the absorption effect is better;

[0015] 2. This new and efficient desulfurization and slurry adding system is designed to shorten the system adjustment time, save the amount of absorbent and save operating costs. When the flue gas contacts with the solution and completes the reaction, the flue gas will enter the exhaust pipe. The SO2 concentration monitor installed at the exhaust pipe will monitor the SO2 concentration in the flue gas after the reaction. The gas can only be released when the concentration is qualified. This new and efficient desulfurization and slurry adding system directly adjusts the slurry adding amount according to the SO2 concentration at the outlet of the absorption tower, and the system responds more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the desulfurization and slurrying system process of the utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the absorption tower body of the utility model;

[0018] Figure 3 It is a schematic diagram of the main cross-sectional structure of the absorbent slurry box of the utility model.

[0019] In the figure: 1. absorption tower body; 101. air inlet pipe; 102. exhaust pipe; 103. slurry layer; 104. pH meter; 2. first slurry circulation pump; 201. suction pipe; 202. delivery pipe; 203. first spray layer; 3. absorbent slurry tank; 301. absorbent storage tank; 4. absorbent slurry pump; 401. suction pipe; 402. delivery pipe; 403. flow meter; 404. second slurry circulation pump; 405. electric regulating door; 406. slurry circulation pipeline; 407. second spray layer; 5. absorption tower tray; 6. agitator; 7. SO2 concentration monitor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a technical solution: a new and efficient desulfurization slurry system, comprising an absorption tower body 1, an absorbent slurry tank 3 and a second slurry circulation pump 404,

[0022] An air inlet pipe 101 and an exhaust pipe 102 are installed on the outside of the absorption tower body 1, a slurry layer 103 is arranged inside the absorption tower body 1, a pH meter 104 is plugged into the slurry layer 103, and the pH meter 104 is connected to the absorption tower body 1 through the absorption tower body 1, and a first slurry circulation pump 2 and a second slurry circulation pump 404 are arranged on one side of the absorption tower body 1, and one side of the first slurry circulation pump 2 and the second slurry circulation pump 404 are connected to the absorption tower body 1 through the suction pipe 201 respectively, and the top of the first slurry circulation pump 2 and the second slurry circulation pump 404 are connected to the absorption tower body 1 through the infusion pipe 202 and the slurry circulation pipeline 406 respectively, and the side of the infusion pipe 202 away from the first slurry circulation pump 2 is connected to the first spray layer 203;

[0023] An absorbent slurry tank 3 is provided on one side of the absorption tower body 1, an absorbent storage tank 301 is installed on the top of the absorbent slurry tank 3, an absorbent slurry pump 4 is provided on one side of the absorbent storage tank 301, one side of the absorbent slurry pump 4 is connected to the absorbent slurry tank 3 through a suction pipe 401, and the top of the absorbent slurry pump 4 is connected to one end of a delivery pipe 402;

[0024] The other end of the delivery pipe 402 is connected to the liquid extraction pipe 201 on one side of the second slurry circulation pump 404, a flow meter 403 is installed in the middle of the delivery pipe 402, an electric adjustment door 405 is installed on the outside of the liquid extraction pipe 201, the slurry circulation pipeline 406 is connected to the second spray layer 407 on the side away from the second slurry circulation pump 404, an absorption tower tray 5 is installed inside the absorption tower body 1, the absorption tower tray 5 is located between the first spray layer 203 and the slurry layer 103, and an agitator 6 is installed in the middle of the absorbent slurry tank 3.

[0025] In the specific implementation, in order to simplify the desulfurization slurry adding system, the absorbent slurry pump 4 is started when spraying is performed, and the absorbent slurry pump 4 extracts the quantitatively proportioned slurry from the absorbent slurry tank 3 through the suction pipe 401 on one side, and quantitatively delivers the slurry through the delivery pipe 402 to the infusion pipe 202 on one side of the second slurry circulation pump 404 through the flow meter 403, and after mixing with the solution in the infusion pipe 202, the mixed solution is delivered to the second spray layer 407 through the slurry circulation pipeline 406 by the second slurry circulation pump 404 for pressurized atomization and spraying, and reacts with the flue gas entering the inside of the absorption tower body 1 from the air inlet pipe 101, and the reacted solution is mixed with the slurry layer 103 through the absorption tower tray 5, and is extracted to the first spray layer 203 through the suction pipe 201 and the infusion pipe 202 by the first slurry circulation pump 2 for spraying again;

[0026] A flow meter 403 is provided at the delivery pipe 402 of the absorbent slurry pump 4 to adjust the amount of absorbent slurry according to system needs. The first slurry circulation pump 2 and the second slurry circulation pump 404 are provided with frequency conversion, and the electric regulating door 405 can realize precise adjustment of the slurry supply. A pH meter 104 is provided at the bottom slurry of the tower to detect the pH of the slurry in the tower and maintain the stability of the system. An absorption tower tray 5 is provided on the lower side of the first spray layer 203 to evenly distribute the flue gas, so that the flue gas and the absorbent are in better contact and the absorption effect is ensured. The new and efficient desulfurization slurry adding system adds the absorbent slurry in front of the slurry circulation pipe 406 and sprays it directly, so that the absorbent concentration is higher and the absorption effect is better.

[0027] See also Figure 2 and Figure 3 It can be seen that a SO2 concentration monitor 7 is installed outside the exhaust pipe 102.

[0028] During specific implementation, in order to better shorten the system adjustment time, save the amount of absorbent, and save operating costs, when the flue gas contacts the solution and completes the reaction, the flue gas will enter the exhaust pipe 102. The SO2 concentration monitor 7 installed at the exhaust pipe 102 will monitor the SO2 concentration in the flue gas after the reaction. The gas can only be released when the concentration is qualified. This new and efficient desulfurization slurry adding system directly adjusts the slurry adding amount according to the SO2 concentration at the outlet of the absorption tower, and the system responds more quickly.

[0029] To sum up, when using the new and efficient desulfurization slurrying system, the desulfurization absorbent is first stored in the agent storage box 301. When it is needed, the agent storage box 301 introduces the desulfurization absorbent into the absorbent slurry box 3 through the dosing pipe. The absorbent slurry is quantitatively configured in the absorbent slurry box 3, and the agitator 6 is started for stirring to prevent the slurry from sedimentation. The configured slurry is transported by the absorbent slurry pump 4 through the suction pipe 401 and the delivery pipe 402 to the suction pipe 201 on the front side of the second slurry circulation pump 404, and is transported to the second spray layer 407 on the top of the absorption tower body 1 via the second slurry circulation pump 404 and the slurry circulation pipeline 406, and is sprayed into the absorption tower body 1 by the nozzle, and contacts with the flue gas in countercurrent to complete the absorption process. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel and highly efficient desulfurization slurry adding system, comprising an absorption tower body (1), an absorbent slurry tank (3) and a second slurry circulation pump (404), characterized in that: An air inlet pipe (101) and an air outlet pipe (102) are installed on the outside of the absorption tower body (1); a slurry layer (103) is arranged inside the absorption tower body (1); a pH meter (104) is plugged into the slurry layer (103); the pH meter (104) is connected to the absorption tower body (1); a first slurry circulation pump (2) and a second slurry circulation pump (404) are arranged on one side of the absorption tower body (1); one side of the first slurry circulation pump (2) and the second slurry circulation pump (404) are connected to the absorption tower body (1) through a liquid extraction pipe (201); the tops of the first slurry circulation pump (2) and the second slurry circulation pump (404) are connected to the absorption tower body (1) through a liquid infusion pipe (202) and a slurry circulation pipeline (406); the side of the liquid infusion pipe (202) away from the first slurry circulation pump (2) is connected to the first spray layer (203); An absorbent slurry tank (3) is arranged on one side of the absorption tower body (1), an absorbent storage tank (301) is installed on the top of the absorbent slurry tank (3), and an absorbent slurry pump (4) is arranged on one side of the absorbent storage tank (301).

2. A novel and efficient desulfurization slurrying system according to claim 1, characterized in that: One side of the absorbent slurry pump (4) is connected to the absorbent slurry tank (3) via a suction pipe (401), and the top of the absorbent slurry pump (4) is connected to one end of a delivery pipe (402).

3. A novel and efficient desulfurization and pulping system according to claim 2, characterized in that: The other end of the delivery pipe (402) is connected to the liquid extraction pipe (201) on one side of the second slurry circulation pump (404), and a flow meter (403) is installed in the middle of the delivery pipe (402).

4. A novel and efficient desulfurization and pulping system according to claim 3, characterized in that: An electric regulating door (405) is installed outside the liquid extraction pipe (201), and the side of the slurry circulation pipeline (406) away from the second slurry circulation pump (404) is connected to the second spraying layer (407).

5. A novel and efficient desulfurization and pulping system according to claim 1, characterized in that: An absorption tower tray (5) is installed inside the absorption tower body (1), and the absorption tower tray (5) is located between the first spray layer (203) and the slurry layer (103).

6. A novel and efficient desulfurization slurrying system according to claim 1, characterized in that: A stirrer (6) is installed in the middle of the absorbent slurry tank (3), and a SO2 concentration monitor (7) is installed on the outside of the exhaust pipe (102).

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