Resin regeneration scrubbing end point monitoring system

Abstract

The utility model discloses a scrubbing end point monitoring system for resin regeneration. The scrubbing end point monitoring system comprises a sample water switching device and a water quality monitoring device, the resin regeneration tower comprises a resin separation tower, a condensate water fine treatment anion tower and a condensate water fine treatment cation tower; a water outlet pipeline of the resin regeneration tower is in bypass connection with a monitoring pipeline, the sample water switching device comprises a regeneration tower resin scrubbing electromagnetic valve group, and the regeneration tower resin scrubbing electromagnetic valve group is sequentially connected to the monitoring pipeline; and the regeneration tower resin scrubbing electromagnetic valve group guides water to the water quality monitoring device through opening and closing switching of a single electromagnetic valve corresponding to each resin regeneration tower. According to the utility model, the sample water switching device is used for switching the sample water supply of the resin regeneration tower to the water quality monitoring device, so that the scrubbing effect of the resin separation tower, the condensate water fine treatment anion tower and the condensate water fine treatment cation tower can be monitored on line, and the scrubbing frequency is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of resin regeneration, and particularly relates to a resin regeneration scrubbing endpoint monitoring system. Background Art

[0002] During the operation of the fine treatment mixed bed, the consumption of the resin exchange capacity will cause the resin to reach the end point of failure, and it is necessary to carry out full and efficient regeneration to restore the resin ion exchange performance, thereby ensuring the resin regeneration degree and ensuring the water quality of the fine treatment mixed bed. During the regeneration process, the resin needs to be repeatedly scrubbed with water and air according to the process requirements. The original regeneration process is not economical and energy-saving. The biggest problem is that there is no reliable scrubbing end point judgment monitoring device, which leads to excessive scrubbing of the resin, consumes a large amount of desalted water, and also produces a large amount of regeneration wastewater. At the same time, it also causes resin damage, reduces the life of the resin, and causes economic losses. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a resin regeneration scrubbing endpoint monitoring system, which switches the sample water supplied to the resin regeneration tower to the water quality monitoring device through a sample water switching device, thereby realizing online monitoring of the scrubbing effects of the resin separation tower, the condensate polishing anion tower and the condensate polishing anion tower to reduce the number of scrubbing times.

[0004] Technical solution: To achieve the above-mentioned purpose, the resin regeneration scrubbing endpoint monitoring system of the utility model includes a sample water switching device and a water quality monitoring device; the outlet pipe of the resin regeneration tower is bypassed and connected with a monitoring pipe, the sample water switching device includes a regeneration tower resin scrubbing solenoid valve group, and the regeneration tower resin scrubbing solenoid valve group is connected to the monitoring pipe in turn, and the regeneration tower resin scrubbing solenoid valve group guides water to the water quality monitoring device through the opening and closing switching of a single solenoid valve corresponding to each resin regeneration tower.

[0005] Furthermore, the resin regeneration tower includes a resin separation tower, a condensate polishing negative tower and a condensate polishing positive tower, and the regeneration tower resin scrubbing solenoid valve group includes a separation tower resin scrubbing solenoid valve corresponding to the resin separation tower, a negative tower resin scrubbing solenoid valve corresponding to the condensate polishing negative tower, and a positive tower resin scrubbing solenoid valve corresponding to the condensate polishing positive tower.

[0006] Furthermore, the resin separation tower, the condensate polishing anion tower and the condensate polishing yang tower are respectively provided with a separation tower outlet water control valve, anion tower outlet water control valve and yang tower outlet water control valve on the outlet water pipeline.

[0007] Furthermore, a resin filtering device is provided between the resin scrubbing solenoid valve group of the regeneration tower and the water quality monitoring device, and the resin filtering device is composed of at least one filter plate arranged inside the filter cavity along the water guiding direction.

[0008] Furthermore, the water inlet end and the water outlet end of the water quality monitoring device are respectively provided with a water inlet valve and a water outlet valve. During the water quality detection process of the water quality monitoring device, the water inlet valve and the water outlet valve are kept in a normally closed state.

[0009] Furthermore, the water quality monitoring device is a water quality monitor connected to a PLC / DCS control system for data transmission.

[0010] Furthermore, it comprises a wastewater pool, and the end of the outlet pipe and the end of the monitoring pipe are both connected to the wastewater pool by water conduction.

[0011] Beneficial effect: The utility model switches the sample water supplied to the resin regeneration tower to the water quality monitoring device through the sample water switching device, which can realize online monitoring of the scrubbing effects of the resin separation tower, the condensate polishing anion tower and the condensate polishing yang tower. Each tower can perform independent monitoring operations without affecting each other, and the monitoring accuracy is high, thereby reducing the number of scrubbing times, helping to determine whether the scrubbing step is completed, and achieving energy conservation and emission reduction requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] As attached Figure 1 As shown, the resin regeneration scrubbing endpoint monitoring system includes a sample water switching device and a water quality monitoring device 2; the outlet pipe 30 of the resin regeneration tower 3 is bypassed and connected with a monitoring pipe 4, the sample water switching device includes a regeneration tower resin scrubbing solenoid valve group 5, the regeneration tower resin scrubbing solenoid valve group 5 is sequentially connected to the monitoring pipe 4, and the regeneration tower resin scrubbing solenoid valve group 5 guides water to the water quality monitoring device 2 by switching on and off a single solenoid valve corresponding to each resin regeneration tower 3. The resin regeneration tower 3 includes a resin separation tower 31, a condensate polishing anion tower 32, and a condensate polishing anion tower 33, and the regeneration tower resin scrubbing solenoid valve group 5 includes a separation tower resin scrubbing solenoid valve 51 corresponding to the resin separation tower 31, a anion tower resin scrubbing solenoid valve 52 corresponding to the condensate polishing anion tower 32, and a anion tower resin scrubbing solenoid valve 53 corresponding to the anion tower 33. The utility model switches the sample water supplied to the resin regeneration tower 3 to the water quality monitoring device 2 through the sample water switching device, and can realize online monitoring of the scrubbing effects of the resin separation tower 31, the condensate polishing anion tower 32 and the condensate polishing yang tower 32. Each tower can perform independent monitoring operations without affecting each other, and the monitoring accuracy is high, thereby reducing the number of scrubbing times, helping to determine whether the scrubbing step is completed, and achieving energy conservation and emission reduction requirements.

[0015] More specifically, in order to achieve better independent control of each regeneration tower, the resin separation tower 31, the condensate polishing anion tower 32 and the condensate polishing yang tower 33 are respectively provided with a separation tower outlet water control valve 3.1, anion tower outlet water control valve 3.2 and yang tower outlet water control valve 3.3 on the outlet water pipeline 30.

[0016] Since the resin regeneration tower 3 may have a risk of resin leakage during the resin regeneration process, the resin mixed into the water quality monitoring device 2 will damage the equipment on the one hand, and on the other hand, blockage will reduce the scrubbing monitoring accuracy, causing the risk of monitoring failure. Therefore, in the utility model, a resin filtering device is provided between the regeneration tower resin scrubbing solenoid valve group 5 and the water quality monitoring device 2, and the resin filtering device is composed of at least one filter plate arranged inside the filter cavity along the water guide direction. Before the sample water enters the water quality monitoring device 2, the resin filtering device is used to filter out the leaked resin, thereby ensuring the safety of the equipment and the scrubbing monitoring accuracy.

[0017] In order to prevent sample water from entering the water quality monitoring device 2 and causing impact damage during the scrubbing monitoring process, the water inlet end and the water outlet end of the water quality monitoring device 2 are respectively provided with an inlet valve 2a and a water outlet valve 2b. During the water quality detection process of the water quality monitoring device 2, the inlet valve 2a and the outlet valve 2b are kept in a normally closed state.

[0018] In the present invention, the water quality monitoring device 2 is a water quality monitoring instrument connected to a PLC / DCS control system for data transmission. The present invention includes a wastewater pool 7, and the ends of the outlet pipe 30 and the monitoring pipe 4 are both connected to the wastewater pool 7 by water.

[0019] During the regeneration process of the resin in the resin separation tower 31 or the condensate polishing anion tower 32 or the condensate polishing anode tower 33, the regeneration process requires repeated water and air inlet scrubbing of the resin. The specific scrubbing monitoring process of each regeneration tower is as follows:

[0020] 1. When the anion and cation resins are scrubbed with water and air in the resin separation tower 31, the control system (PLC / DCS) scrubs repeatedly 7 times as set, and each scrubbing time is 8 minutes. The corresponding separation tower resin scrubbing solenoid valve 51 is opened, and the anion tower resin scrubbing solenoid valve 52 and the cation tower resin scrubbing solenoid valve 53 are closed. The water quality monitoring device 2 monitors the water quality of the scrubbing water of the resin separation tower 31 in real time, and triggers the resin scrubbing endpoint signal to the control system (PLC / DCS) in time according to the scrubbing water quality. The control system reduces the scrubbing times and completes the scrubbing step according to the separation tower regeneration process requirements, and simultaneously closes the separation tower resin scrubbing solenoid valve 51.

[0021] 2. When the anion resin is scrubbed by water and air in the anion tower 32 for condensate polishing treatment, the control system (PLC / DCS) scrubs it repeatedly 7 times as set, and each scrubbing time is 8 minutes. The corresponding anion tower resin scrubbing water solenoid valve 52 is opened, and the anode tower resin scrubbing solenoid valve 53 and the separation tower resin scrubbing solenoid valve 51 are closed. The water quality monitoring device 2 monitors the scrubbing water quality of the anion tower 32 for condensate polishing treatment in real time, and triggers the resin scrubbing endpoint signal to the control system (PLC / DCS) in time according to the scrubbing water quality. The control system reduces the scrubbing times according to the anion tower regeneration process requirements and completes the current scrubbing step, and simultaneously closes the anion tower resin scrubbing water solenoid valve 52.

[0022] 3. When the cation resin is scrubbed by water and air in the condensate polishing cation tower 33, the control system (PLC / DCS) scrubs it repeatedly 7 times as set, and each scrubbing time is 8 minutes. The corresponding cation tower resin scrubbing solenoid valve 53 is opened, and the anion tower resin scrubbing water solenoid valve 52 and the separation tower resin scrubbing solenoid valve 51 are closed. The water quality monitoring device 2 monitors the scrubbing water quality of the condensate polishing cation tower 33 in real time, and triggers the resin scrubbing endpoint signal to the control system (PLC / DCS) in time according to the scrubbing water quality. The control system reduces the scrubbing times and completes the current scrubbing step according to the cation tower regeneration process requirements, and simultaneously closes the cation tower resin scrubbing solenoid valve 53.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Resin regeneration scrubbing endpoint monitoring system, characterized by: The invention comprises a sample water switching device and a water quality monitoring device (2); the water outlet pipeline (30) of the resin regeneration tower (3) is connected to the monitoring pipeline (4) in a bypass manner; the sample water switching device comprises a regeneration tower resin scrubbing solenoid valve group (5); the regeneration tower resin scrubbing solenoid valve group (5) is sequentially connected to the monitoring pipeline (4); the regeneration tower resin scrubbing solenoid valve group (5) guides water to the water quality monitoring device (2) by switching on and off a single solenoid valve corresponding to each resin regeneration tower (3).

2. The resin regeneration scrubbing endpoint monitoring system according to claim 1, characterized in that: The resin regeneration tower (3) comprises a resin separation tower (31), a condensate polishing anion tower (32) and a condensate polishing yang tower (33), and the regeneration tower resin scrubbing solenoid valve group (5) comprises a separation tower resin scrubbing solenoid valve (51) corresponding to the resin separation tower (31), a anion tower resin scrubbing solenoid valve (52) corresponding to the condensate polishing anion tower (32) and a yang tower resin scrubbing solenoid valve (53) corresponding to the condensate polishing yang tower (33).

3. The resin regeneration scrubbing endpoint monitoring system according to claim 2, characterized in that: The resin separation tower (31), the condensate polishing anion tower (32) and the condensate polishing yang tower (33) are respectively provided with a separation tower water outlet control valve (3.1), an anion tower water outlet control valve (3.2) and a yang tower water outlet control valve (3.3) on the water outlet pipeline (30).

4. The resin regeneration scrubbing endpoint monitoring system according to claim 3 is characterized in that: A resin filtering device is provided between the regeneration tower resin scrubbing solenoid valve group (5) and the water quality monitoring device (2), and the resin filtering device is composed of at least one filter plate arranged inside the filter cavity along the water guide direction.

5. The resin regeneration scrubbing endpoint monitoring system according to claim 2, characterized in that: The water inlet end and the water outlet end of the water quality monitoring device (2) are respectively provided with a water inlet valve (2a) and a water outlet valve (2b); during the water quality detection process of the water quality monitoring device (2), the water inlet valve (2a) and the water outlet valve (2b) are both kept in a normally closed state.

6. The resin regeneration scrubbing endpoint monitoring system according to claim 2, characterized in that: The water quality monitoring device (2) is a water quality monitoring instrument connected to a PLC / DCS control system for data transmission.

7. The resin regeneration scrubbing endpoint monitoring system according to claim 2, characterized in that: It comprises a wastewater pool (7), and the end of the water outlet pipeline (30) and the end of the monitoring pipeline (4) are both connected to the wastewater pool (7) through water conduction.

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