Interstage water replenishing method and device for flue gas spray cooling system

Abstract

The invention discloses an interstage water replenishing method and device for a flue gas spray cooling system, and the method comprises the steps: responding to the initial start of the flue gas spray cooling system, and starting a system liquid replenishing pump to replenish spray cooling liquid to a third stage; based on the spraying cooling liquid in the third section, the spraying cooling liquid in the first section, the second section and the third section is monitored and controlled through a first-section spraying pump, a second-section spraying pump and a third-section spraying pump until water replenishing in the first section, the second section and the third section is completed; and in response to the condition that the fourth section needs to be supplemented with liquid, starting a calcium chloride liquid supplementing pump to supplement liquid for the fourth section until the fourth section is supplemented with liquid. Therefore, spraying cooling liquid in the first section, the second section and the third section is monitored and controlled through the first-section spraying pump, the second-section spraying pump and the third-section spraying pump, and therefore rapid water supplementing and balance of the operation liquid level are achieved.

Description

Technical Field

[0001] The present invention relates to the field of monitoring technology, and in particular to an inter-stage water replenishment method and device for a flue gas spray cooling system. Background Art

[0002] At present, the flue gas spray cooling system needs to achieve a balance between rapid water replenishment and operating liquid level to achieve rapid cooling of the flue gas spray cooling system. However, the flue gas spray cooling system includes a multi-stage structure. Based on this, how to control the multi-stage structure to achieve rapid water replenishment of the flue gas spray cooling system is an urgent problem to be solved. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the present invention proposes an interstage water replenishment method for a flue gas spray cooling system, which can monitor and control the spray coolant in the first, second and third stages through a first-stage spray pump, a second-stage spray pump and a third-stage spray pump, thereby achieving rapid water replenishment and a balance between the operating liquid level.

[0005] Another object of the present invention is to provide an interstage water replenishment device for a flue gas spray cooling system.

[0006] To achieve the above object, the present invention provides, on one hand, an interstage water replenishment method for a flue gas spray cooling system, wherein the flue gas spray cooling system comprises a system replenishment pump, a first-stage spray pump, a second-stage spray pump, a third-stage spray pump and a calcium chloride replenishment pump, and the method comprises:

[0007] In response to the initial start-up of the flue gas spray cooling system, the system refilling pump is turned on to refill the spray cooling liquid to the third stage;

[0008] Based on the spray coolant in the three sections, the spray coolant in the first section, the second section and the third section is monitored and controlled by the first section spray pump, the second section spray pump and the third section spray pump until the water replenishment in the first section, the second section and the third section is completed;

[0009] In response to the need for fluid replenishment in the fourth stage, the calcium chloride fluid replenishment pump is turned on to replenish fluid in the fourth stage until the fluid replenishment in the fourth stage is completed.

[0010] The interstage water replenishment method for a flue gas spray cooling system according to an embodiment of the present invention may also have the following additional technical features:

[0011] In one embodiment of the present invention, based on the spray cooling liquid in the three sections, the spray cooling liquid in the first section, the second section and the third section is monitored and controlled by a first section spray pump, a second section spray pump and a third section spray pump until the water replenishment in the first section, the second section and the third section is completed, including:

[0012] If the liquid level of the third section exceeds the first liquid level of the overflow port, the water of the third section flows to the second section through the overflow port;

[0013] In response to the second-stage liquid level reaching the second-stage spray pump start-up condition, the second-stage spray pump is started and the control valve of the first-stage liquid replenishment pipeline is opened;

[0014] If the liquid level in the section reaches the second liquid level, closing the control valve of a section of the liquid replenishment pipeline;

[0015] If the liquid level in the second stage reaches the third liquid level, the system liquid replenishing pump is turned off to complete the water replenishment in the first, second and third stages.

[0016] In one embodiment of the present invention, in response to the fourth stage requiring fluid replenishment, the calcium chloride fluid replenishment pump is turned on to replenish the fourth stage until the fluid replenishment of the fourth stage is completed, and the method further comprises:

[0017] After the four stages of fluid replenishment are completed, the calcium chloride fluid replenishment pump is turned off.

[0018] In one embodiment of the present invention, the method further includes:

[0019] If the liquid level in the four sections exceeds the fourth liquid level and / or an emergency drainage pipeline is needed, the control valve of the calcium chloride emergency drainage pipeline is opened to discharge the calcium chloride solution into the calcium chloride solution pool for standby use.

[0020] To achieve the above object, the present invention provides, on the other hand, an interstage water replenishment device for a flue gas spray cooling system, the flue gas spray cooling system comprising a system replenishment pump, a first-stage spray pump, a second-stage spray pump, a third-stage spray pump and a calcium chloride replenishment pump, the device comprising:

[0021] A first start-up module is used for starting the system liquid replenishing pump to replenish the spray cooling liquid to the third stage in response to the initial start-up of the flue gas spray cooling system;

[0022] A control module is used to monitor and control the spray coolant in the first, second and third sections based on the spray coolant in the three sections through the first spray pump, the second spray pump and the third spray pump until the water replenishment in the first, second and third sections is completed;

[0023] The second start-up module is used for starting the calcium chloride infusion pump to infuse fluid to the fourth stage in response to the need for fluid infusion in the fourth stage, until the fluid infusion in the fourth stage is completed.

[0024] Another object of the present invention is to provide an electronic device, comprising:

[0025] at least one processor; and

[0026] a memory communicatively connected to the at least one processor; wherein,

[0027] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform any one of the methods described in the above aspect.

[0028] Another object of the present invention is to provide a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the computer executes any one of the methods described in the above aspect.

[0029] The interstage water replenishment method and device for the flue gas spray cooling system of the embodiment of the present invention can monitor and control the spray coolant in the first, second and third stages through a first-stage spray pump, a second-stage spray pump and a third-stage spray pump, thereby achieving rapid water replenishment and a balance between the operating liquid level.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 is a flow chart of an inter-stage water replenishment method for a flue gas spray cooling system according to an embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of a flue gas spray cooling system according to an embodiment of the present invention;

[0034] Figure 3 4 is a structural diagram of an interstage water replenishment device for a flue gas spray cooling system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0037] The following describes an interstage water replenishment method and device for a flue gas spray cooling system according to an embodiment of the present invention with reference to the accompanying drawings.

[0038] Figure 1 The present invention is a flowchart of an interstage water replenishment method for a flue gas spray cooling system according to an embodiment of the present invention.

[0039] like Figure 1 As shown, the method includes:

[0040] S1, in response to the initial start-up of the flue gas spray cooling system, the system replenishing pump is turned on to replenish the spray cooling liquid to the third stage;

[0041] In one embodiment of the present invention, Figure 2 Schematic diagram of a flue gas spray cooling system proposed in an embodiment of the present invention. Figure 2 As shown, the above flue gas spray cooling system may include a system replenishment pump, a first-stage spray pump, a second-stage spray pump, a third-stage spray pump and a calcium chloride replenishment pump, wherein the spray coolant for the first, second and third stages of cooling is process water, the spray coolant for the fourth stage is a calcium chloride solution, and the four-stage sprays are isolated from each other and are connected and regulated through overflow pipes, water replenishment pipes, etc. And, Figure 2 Pipeline ①②③④ are the first, second, third and fourth sections of the spray circulation pipeline respectively. Pipeline ⑤ is the water supply pipeline of the spray system, which is matched with the system replenishment pump to replenish water for the entire system.

[0042] In one embodiment of the present invention, in response to the initial startup of the flue gas spray cooling system, the system replenishing pump can be turned on to replenish the spray cooling liquid to the third stage.

[0043] S2, based on the spray coolant in the three sections, monitors and controls the spray coolant in the first, second and third sections through the first-section spray pump, the second-section spray pump and the third-section spray pump until the water replenishment in the first, second and third sections is completed;

[0044] In one embodiment of the present invention, after the system replenishment pump is turned on through the above steps to replenish the spray coolant to the third stage, the spray coolant in the first, second and third stages can be monitored and controlled through the first spray pump, the second spray pump and the third spray pump based on the spray coolant in the three stages until the replenishment in the first, second and third stages is completed.

[0045] Specifically, in one embodiment of the present invention, the method for monitoring and controlling the spray cooling liquid in the first, second and third sections by the first-stage spray pump, the second-stage spray pump and the third-stage spray pump based on the spray cooling liquid in the three sections until the water replenishment in the first, second and third sections is completed may include the following steps:

[0046] S21, if the liquid level of the third stage exceeds the first liquid level of the overflow port, the water of the third stage flows to the second stage through the overflow port;

[0047] S22, in response to the second stage liquid level reaching the second stage spray pump start condition, starting the second stage spray pump and opening the control valve of the first stage liquid replenishment pipeline;

[0048] S23, if the liquid level in one section reaches the second liquid level, close the control valve of one section of the liquid replenishment pipeline;

[0049] S24, if the liquid level in the second stage reaches the third liquid level, the system replenishment pump is turned off to complete the water replenishment in the first, second and third stages.

[0050] Wherein, in one embodiment of the present invention, when the three-stage liquid level exceeds the first liquid level of the overflow port, the three-stage water flows to the second stage through the overflow port to achieve the purpose of replenishing the second stage. In one embodiment of the present invention, the first liquid level can be the overflow port height, for example, 940mm.

[0051] And, in one embodiment of the present invention, in response to the second stage liquid level reaching the second stage spray pump start condition, the second stage spray pump is started and the control valve of the first stage replenishment pipeline is opened, and water is replenished from the second stage to the first stage, during which the system replenishment pump continues to operate, and the third stage to the second stage continues to overflow. Among them, in one embodiment of the present invention, the above-mentioned second stage spray pump start condition can be that the second stage liquid level reaches the fourth liquid level, and the fourth liquid level can be set as needed, for example, 600mm.

[0052] Further, in one embodiment of the present invention, when the liquid level in the first stage reaches the second liquid level, the control valve of the first stage replenishment pipeline ⑥ is closed, and the second stage continues to replenish water. The second liquid level can be set as needed, for example, 1000 mm.

[0053] Further, in one embodiment of the present invention, after the control valve of the first stage of the liquid replenishment pipeline is closed through the above steps, the second stage continues to replenish water, and if the liquid level in the second stage reaches the third liquid level, the system liquid replenishment pump is turned off to complete the water replenishment in the first, second and third stages. In one embodiment of the present invention, the third liquid level can be set as needed, for example, 600 mm.

[0054] Among them, in one embodiment of the present invention, two overflow pipes ⑨ are set in the above-mentioned two sections to prevent excessive water replenishment in the two sections, and at the same time serve as a channel for discharging flue gas condensate during operation.

[0055] S3, in response to the need for fluid replenishment in the fourth stage, the calcium chloride fluid replenishment pump is turned on to replenish the fourth stage until the fluid replenishment in the fourth stage is completed.

[0056] In one embodiment of the present invention, the four-stage spray liquid is a calcium chloride solution, and the water replenishment process is also quite independent. In response to the need for replenishment in the four stages, the calcium chloride replenishment pump is turned on to replenish the liquid. After the four-stage replenishment is completed, the calcium chloride replenishment pump is turned off.

[0057] And, in one embodiment of the present invention, if the liquid level in the four sections exceeds the fourth liquid level and / or an emergency drainage pipeline is needed, the control valve of the calcium chloride emergency drainage pipeline ⑧ is opened to discharge the calcium chloride solution into the calcium chloride solution pool for standby use.

[0058] In one embodiment of the present invention, in response to the initial startup of the flue gas spray cooling system, the system refill pump is turned on to refill the spray coolant to the third stage; based on the spray coolant in the third stage, the spray coolant in the first, second and third stages is monitored and controlled by the first stage spray pump, the second stage spray pump and the third stage spray pump until the water replenishment in the first, second and third stages is completed; in response to the need for refilling in the fourth stage, the calcium chloride refill pump is turned on to refill the fourth stage until the refilling in the fourth stage is completed. Thus, the spray coolant in the first, second and third stages can be monitored and controlled by the first stage spray pump, the second stage spray pump and the third stage spray pump, thereby achieving a balance between rapid water replenishment and operating liquid level.

[0059] In order to implement the above embodiment, Figure 3 As shown, this embodiment also provides an interstage water replenishment device 10 for a flue gas spray cooling system. The flue gas spray cooling system includes a system replenishment pump, a first-stage spray pump, a second-stage spray pump, a third-stage spray pump and a calcium chloride replenishment pump. The device includes a first opening module 301, a control module 302 and a second opening module 303;

[0060] The first start-up module 301 is used to start the system liquid replenishing pump to replenish the spray cooling liquid to the third stage in response to the initial start-up of the flue gas spray cooling system;

[0061] The control module 302 is used to monitor and control the spray coolant in the first, second and third sections based on the spray coolant in the third section through the first section spray pump, the second section spray pump and the third section spray pump until the water replenishment in the first section, the second section and the third section is completed;

[0062] The second start module 303 is used for starting the calcium chloride infusion pump to infuse fluid to the fourth stage in response to the fourth stage needing fluid infusion, until the fluid infusion of the fourth stage is completed.

[0063] In one embodiment of the present invention, the control module is specifically used for:

[0064] If the liquid level of the third stage exceeds the first liquid level of the overflow port, the water of the third stage will flow to the second stage through the overflow port;

[0065] In response to the second-stage liquid level reaching the second-stage spray pump start-up condition, the second-stage spray pump is started and the control valve of the first-stage liquid replenishment pipeline is opened;

[0066] If the liquid level in one section reaches the second liquid level, close the control valve of one section of the liquid replenishment pipeline;

[0067] If the liquid level in the second stage reaches the third liquid level, turn off the system replenishment pump to complete the water replenishment in the first, second and third stages.

[0068] Furthermore, in one embodiment of the present invention, the above device is also used for:

[0069] After the four-stage fluid replenishment is completed, turn off the calcium chloride fluid replenishment pump.

[0070] Furthermore, in one embodiment of the present invention, the above device is also used for:

[0071] If the liquid level in the four sections exceeds the fourth liquid level and / or an emergency drainage pipeline is needed, the control valve of the calcium chloride emergency drainage pipeline is opened to discharge the calcium chloride solution into the calcium chloride solution pool for standby use.

[0072] According to the interstage water replenishment device for the flue gas spray cooling system of the embodiment of the present invention, the device can monitor and control the spray cooling liquid in the first stage, the second stage and the third stage through the first stage spray pump, the second stage spray pump and the third stage spray pump, thereby achieving rapid water replenishment and balance of operating liquid level.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. An interstage water replenishment method for a flue gas spray cooling system, characterized in that: The flue gas spray cooling system comprises a system rehydration pump, a first-stage spray pump, a second-stage spray pump, a third-stage spray pump and a calcium chloride rehydration pump, and the method comprises: In response to the initial start-up of the flue gas spray cooling system, the system refilling pump is turned on to refill the spray cooling liquid to the third stage; Based on the spray coolant in the three sections, the spray coolant in the first section, the second section and the third section is monitored and controlled by the first section spray pump, the second section spray pump and the third section spray pump until the water replenishment in the first section, the second section and the third section is completed; In response to the need for fluid replenishment in the fourth stage, the calcium chloride fluid replenishment pump is turned on to replenish fluid in the fourth stage until the fluid replenishment in the fourth stage is completed.

2. The method according to claim 1, characterized in that Based on the spray cooling liquid in the three sections, the spray cooling liquid in the first section, the second section and the third section is monitored and controlled by the first section spray pump, the second section spray pump and the third section spray pump until the water replenishment in the first section, the second section and the third section is completed, including: If the liquid level of the third section exceeds the first liquid level of the overflow port, the water of the third section flows to the second section through the overflow port; In response to the second-stage liquid level reaching the second-stage spray pump start-up condition, the second-stage spray pump is started and the control valve of the first-stage liquid replenishment pipeline is opened; If the liquid level in the section reaches the second liquid level, closing the control valve of a section of the liquid replenishment pipeline; If the liquid level in the second stage reaches the third liquid level, the system liquid replenishing pump is turned off to complete the water replenishment in the first, second and third stages.

3. The method according to claim 1, characterized in that In response to the fourth stage requiring fluid replenishment, the calcium chloride fluid replenishment pump is turned on to replenish fluid to the fourth stage until the fluid replenishment of the fourth stage is completed. After that, the method further includes: After the four stages of fluid replenishment are completed, the calcium chloride fluid replenishment pump is turned off.

4. The method according to claim 1, characterized in that: The method further comprises: If the liquid level in the four sections exceeds the fourth liquid level and / or an emergency drainage pipeline is needed, the control valve of the calcium chloride emergency drainage pipeline is opened to discharge the calcium chloride solution into the calcium chloride solution pool for standby use.

5. An interstage water supply device for a flue gas spray cooling system, characterized in that: The flue gas spray cooling system includes a system rehydration pump, a first-stage spray pump, a second-stage spray pump, a third-stage spray pump and a calcium chloride rehydration pump, and the device includes: A first start-up module is used for starting the system liquid replenishing pump to replenish the spray cooling liquid to the third stage in response to the initial start-up of the flue gas spray cooling system; A control module is used to monitor and control the spray coolant in the first, second and third sections based on the spray coolant in the three sections through the first spray pump, the second spray pump and the third spray pump until the water replenishment in the first, second and third sections is completed; The second start-up module is used for starting the calcium chloride rehydration pump to rehydrate the fourth stage in response to the need for rehydration of the fourth stage, until the rehydration of the fourth stage is completed.

6. The device according to claim 5, characterized in that The control module is specifically used for: If the liquid level of the third section exceeds the first liquid level of the overflow port, the water of the third section flows to the second section through the overflow port; In response to the second-stage liquid level reaching the second-stage spray pump start-up condition, the second-stage spray pump is started and the control valve of the first-stage liquid replenishment pipeline is opened; If the liquid level in the section reaches the second liquid level, closing the control valve of a section of the liquid replenishment pipeline; If the liquid level in the second stage reaches the third liquid level, the system liquid replenishing pump is turned off to complete the water replenishment in the first, second and third stages.

7. The device according to claim 5, characterized in that The device is also used for: After the four stages of fluid replenishment are completed, the calcium chloride fluid replenishment pump is turned off.

8. The device according to claim 5, characterized in that The device is also used for: If the liquid level in the four sections exceeds the fourth liquid level and / or an emergency drainage pipeline is needed, the control valve of the calcium chloride emergency drainage pipeline is opened to discharge the calcium chloride solution into the calcium chloride solution pool for standby use.

9. An electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 4.

10. A computer storage medium, wherein: The computer storage medium stores computer executable instructions; after the computer executable instructions are executed by the processor, the method according to any one of claims 1 to 4 can be implemented.

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