Calcium hydroxide slurry delivery system

Abstract

The utility model relates to desulfurization system technical field especially is concerned about a kind of calcium hydroxide slurry conveying system. Including the liquid storage pit of storage calcium hydroxide slurry, is equipped with agitator, first self-suction tank and second self-suction tank in liquid storage pit, first self-suction tank is connected with first conveying pump by pipeline, first conveying pump is connected with the inlet of conveying pipeline by first branch pipe, second self-suction tank is connected with second conveying pump by pipeline, second conveying pump is connected with the inlet of conveying pipeline by second branch pipe;The outlet of conveying pipeline is connected with multiple slurry circulating pumps, and the outlet of slurry circulating pump is connected with absorption tower by pipeline. The utility model discloses two conveying pumps and multiple slurry circulating pumps, when high sulfur content, high load and certain slurry circulating pump fault, operating personnel can reasonably operate and adjust corresponding pump set operation according to sulfur dioxide emission value, improve the desulfurization capacity of desulfurization system, ensure that desulfurization system is safely and stably operated.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization system technology, and in particular to a calcium hydroxide slurry conveying system. Background Technology

[0002] With increasingly stringent environmental protection requirements, the stable operation of desulfurization systems in thermal power plants is crucial. In actual operation, issues such as high sulfur content, high load conditions, and slurry circulation pump malfunctions can lead to excessive sulfur dioxide emissions, impacting environmental quality. Therefore, improving the emergency response capabilities of desulfurization systems has become an urgent problem to be solved.

[0003] Current technologies often only offer passive solutions to emergencies such as high sulfur content, high load, and slurry circulation pump failure, such as reducing unit load and controlling fuel sulfur content. This not only directly leads to power generation losses but also increases overall operating costs, becoming a prominent issue restricting system efficiency.

[0004] Therefore, this utility model is proposed to improve the desulfurization capacity of the desulfurization system by optimizing the delivery of calcium hydroxide slurry. Utility Model Content The purpose of this invention is to provide a calcium hydroxide slurry conveying system that can provide more reliable emergency support for desulfurization systems and ensure efficient desulfurization even under complex operating conditions.

[0005] This utility model provides a calcium hydroxide slurry conveying system, including a storage pit for storing calcium hydroxide slurry. The storage pit is equipped with a stirrer, a first self-priming tank, and a second self-priming tank. The first self-priming tank is connected to a first conveying pump via a pipeline. The first conveying pump is connected to the inlet of a conveying pipeline via a first branch pipe. The second self-priming tank is connected to a second conveying pump via a pipeline. The second conveying pump is connected to the inlet of the conveying pipeline via a second branch pipe. The outlet of the conveying pipeline is connected to multiple slurry circulation pumps, and the outlet of the slurry circulation pumps is connected to an absorption tower via a pipeline.

[0006] Furthermore, it also includes a first tank flushing water pipe and a second tank flushing water pipe, the first tank flushing water pipe and the second tank flushing water pipe being connected to the first branch pipe and the second branch pipe, respectively.

[0007] Furthermore, it also includes a main flushing water pipe, which is connected to the delivery pipe.

[0008] Furthermore, a first valve is provided on the first branch pipe.

[0009] Furthermore, a second valve is provided on the second branch pipe.

[0010] Furthermore, a third valve is provided on the conveying pipeline.

[0011] Furthermore, a fourth valve and a fifth valve are respectively installed on the first tank flushing water pipe and the second tank flushing water pipe.

[0012] Furthermore, a sixth valve is provided on the main flushing water pipe.

[0013] Furthermore, the first and second delivery pumps have the same parameters: both have a power of 30KW and a flow rate of 30m³ / h. 3 / h, with a head of 80m.

[0014] Furthermore, the dimensions of the liquid storage pit are 4.5m × 4.5m × 4.5m.

[0015] In summary, compared with the prior art, this utility model has the following advantages: The technical solution provided by this utility model involves setting up two delivery pumps connected to the storage pit to transport the calcium hydroxide slurry in the storage pit to the slurry circulation pump and then into the absorption tower to react with the flue gas. By setting up two delivery pumps and multiple slurry circulation pumps, in the event of high sulfur content, high load, or failure of one of the slurry circulation pumps, the operators can reasonably operate and adjust the operation of the corresponding pump groups according to the sulfur dioxide emission value, thereby improving the desulfurization capacity of the desulfurization system and ensuring the safe and stable operation of the desulfurization system. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the conveying system in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1-Storage pit; 2-First self-priming tank; 3-Second self-priming tank; 4-First transfer pump; 5-Second transfer pump; 6-Transfer pipeline; 601-First branch pipe; 602-Second branch pipe; 603-First valve; 604-Second valve; 605-Third valve; 7-Slurry circulation pump; 8-Absorption tower; 9-First tank flushing water pipeline; 901-Fourth valve; 10-Second tank flushing water pipeline; 1001-Fifth valve; 11-Main pipe flushing water pipeline; 1101-Sixth valve. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example A calcium hydroxide slurry delivery system, such as Figure 1 As shown, the system includes a storage pit 1 for storing calcium hydroxide slurry. The storage pit 1 is equipped with a stirrer, a first self-priming tank 2, and a second self-priming tank 3. The first self-priming tank 2 is connected to a first delivery pump 4 via a pipe. The first delivery pump 4 is connected to the inlet of a delivery pipeline 6 via a first branch pipe 601. The second self-priming tank 3 is connected to a second delivery pump 5 via a pipe. The second delivery pump 5 is connected to the inlet of the delivery pipeline 6 via a second branch pipe 602. The outlet of the delivery pipeline 6 is connected to multiple slurry circulation pumps 7. The outlet of the slurry circulation pumps 7 is connected to an absorption tower 8 via a pipe.

[0023] It also includes a first tank flushing water pipe 9 and a second tank flushing water pipe 10, which are connected to a first branch pipe 601 and a second branch pipe 602, respectively. It also includes a main flushing water pipe 11, which is connected to the conveying pipe 6. The flushing water pipes are used to clean the first self-priming tank 2, the second self-priming tank 3, and the conveying pipe 6.

[0024] After being diluted in the storage pit 1, calcium hydroxide is sent to the inlet of the slurry circulation pump 7 via the first transfer pump 4 or / and the second transfer pump 5 through the transfer pipeline 6 to react with the flue gas in the absorption tower.

[0025] A first valve 603 is installed on the first branch pipe 601, and a second valve 604 is installed on the second branch pipe 602. Multiple branch pipes are installed at the end of the conveying pipeline 6 furthest from the first conveying pump 4 and the second conveying pump 5. The outlet of each branch pipe is connected to a slurry circulation pump 7, and a third valve 605 is installed on each branch pipe. A fourth valve 901 and a fifth valve 1001 are installed on the first tank flushing water pipeline 9 and the second tank flushing water pipeline 10, respectively. A sixth valve 1101 is installed on the main flushing water pipeline 11. A flow regulating valve can also be installed on the conveying pipeline 6. The first valve 603, second valve 604, third valve 605, fourth valve 901, fifth valve 1001, sixth valve 1101, as well as the first conveying pump 4, second conveying pump 5, and slurry circulation pump 7, are all connected to the control system. The control system enables fully automatic switching and can flexibly adjust according to desulfurization requirements, adapting to changing emergency conditions.

[0026] The parameters of the first transfer pump 4 and the second transfer pump 5 are the same: both have a power of 30KW and a flow rate of 30m³ / h. 3 The pumping speed is 80m, and the head is 80m. The dimensions of the storage pit 1 are 4.5m×4.5m×4.5m.

[0027] During system operation, the calcium hydroxide slurry is kept uniformly mixed in the storage pit 1 by a stirrer. The control system selects to start the first delivery pump 4 and / or the second delivery pump 5 according to the operating conditions, and the corresponding valve groups are synchronized. When it is necessary to switch pump sets, the control system first starts the standby pump set, and shuts down the original operating pump set after it has stabilized.

[0028] The calcium hydroxide slurry conveying system provided by this utility model features two self-priming tanks and two conveying pumps. In the event of a failure in one set of equipment, it can automatically switch to the backup equipment. It also includes multiple slurry circulation pumps; if one circulation pump fails, it can automatically switch to another, ensuring continuous system operation. The included flushing water pipes effectively clean the self-priming tanks and conveying pipes, preventing slurry deposition and pipe blockage. The control system automatically adjusts the valves and pumps, allowing for flexible adjustment of the conveying volume according to actual desulfurization needs, adapting to different operating conditions.

[0029] The calcium hydroxide slurry conveying system provided by this utility model can provide more reliable emergency protection in the event of high sulfur content, high load, or failure of a certain slurry circulation pump, ensuring efficient desulfurization under complex working conditions; operators can reasonably operate and adjust the calcium hydroxide conveying system according to the sulfur dioxide emission value to improve the desulfurization capacity of the desulfurization system and ensure the safe and stable operation of the desulfurization system.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A calcium hydroxide slurry delivery system characterized by, The system includes a storage pit (1) for storing calcium hydroxide slurry. The storage pit (1) is equipped with a stirrer, a first self-priming tank (2), and a second self-priming tank (3). The first self-priming tank (2) is connected to a first delivery pump (4) through a pipe. The first delivery pump (4) is connected to the inlet of a delivery pipeline (6) through a first branch pipe (601). The second self-priming tank (3) is connected to a second delivery pump (5) through a pipe. The second delivery pump (5) is connected to the inlet of the delivery pipeline (6) through a second branch pipe (602). The outlet of the delivery pipeline (6) is connected to multiple slurry circulation pumps (7). The outlet of the slurry circulation pumps (7) is connected to an absorption tower (8) through a pipe.

2. The calcium hydroxide slurry delivery system of claim 1, wherein, It also includes a first tank flushing water pipe (9) and a second tank flushing water pipe (10), the first tank flushing water pipe (9) and the second tank flushing water pipe (10) being connected to the first branch pipe (601) and the second branch pipe (602) respectively.

3. The calcium hydroxide slurry delivery system of claim 1, wherein, It also includes a main flushing water pipe (11), which is connected to the conveying pipe (6).

4. The calcium hydroxide slurry delivery system of claim 1, wherein, The first branch pipe (601) is equipped with a first valve (603).

5. The calcium hydroxide slurry delivery system of claim 1, wherein, The second branch pipe (602) is equipped with a second valve (604).

6. The calcium hydroxide slurry delivery system of claim 1, wherein, The conveying pipeline (6) is equipped with a third valve (605).

7. The calcium hydroxide slurry delivery system of claim 2, wherein, The first tank flushing water pipe (9) and the second tank flushing water pipe (10) are respectively equipped with a fourth valve (901) and a fifth valve (1001).

8. The calcium hydroxide slurry delivery system of claim 3, wherein, The main flushing water pipe (11) is equipped with a sixth valve (1101).

9. The calcium hydroxide slurry delivery system of claim 1, wherein, The parameters of the first delivery pump (4) and the second delivery pump (5) are the same: the power is 30 KW, the flow is 30 m 3 / h, and the head is 80 m.

10. The calcium hydroxide slurry delivery system of claim 1, wherein, The dimensions of the liquid storage pit (1) are 4.5m×4.5m×4.5m.

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