Mixed bed resin conveying system and technology

Abstract

The invention relates to a mixed bed resin conveying system and process. When mixed bed resin does not fail and a high-speed mixed bed has defects and needs to be conveyed to a storage system; when the resin does not lose efficacy, the high-speed mixed bed resin needs to be conveyed to a storage system due to temperature; or when the resin is just put into operation, the failure degree is extremely low, and the resin is switched due to start and stop of a unit, the non-failure resin can be directly conveyed to the cation resin regeneration tank through a system valve step sequence, a new resin conveying mode is realized, anion and cation resin layering and conveying processes are reduced, demineralized water can be saved, the resin wear rate is reduced, and the conveying time is saved. The non-failure mixed bed resin can be quickly prepared for later use.

Description

Technical Field

[0001] The present invention relates to the technical field of resin transportation, and in particular, to a mixed-bed resin transportation system and process. Background Art

[0002] For the condensate polishing high-speed mixed-bed resin, external regeneration is adopted, and special resin separation and regeneration equipment is set up to achieve better separation effect, reduce cross contamination, and improve the regeneration degree of the resin. When the mixed-bed resin fails, the existing method uses pneumatic or hydraulic means to transport the resin to the separation tower, where it is scrubbed and the anion and cation resins are separated. Then, the separated resins are respectively transported to the anion tower and the cation tower. After being regenerated with acid and alkali to be qualified, the anion resin is transported to the cation tower. After being mixed and rinsed to be qualified, it is transported back to the mixed bed for use.

[0003] When the polishing mixed-bed resin operates normally until it fails, the existing resin transportation method is scientific and reasonable. When the condensate polishing high-speed mixed-bed resin has not failed, or when the just regenerated resin has not been used and resin transportation is required due to defects in the mixed-bed body, the existing method still needs to transport it back to the separation tower for re-separation and transportation, which is time-consuming, has many steps, wastes water, and increases the wear degree of the resin. Summary of the Invention

[0004] The object of the present invention is to provide a resin transportation system and process, which can directly transport the un-failed resin back to the cation tower, saving time, reducing the consumption of demineralized water, reducing the resin transportation route, and reducing the possibility of resin breakage.

[0005] To achieve the above object, on the one hand, the present invention provides a mixed bed resin conveying system, which includes a high-speed mixed bed tank, a resin separation tank, an anion resin regeneration tank, a cation resin regeneration tank and a flushing water pump; a first exhaust pipe and a mixed bed resin inlet pipe are arranged at the top of the high-speed mixed bed tank, a mixed bed top exhaust valve is arranged on the first exhaust pipe, a mixed bed resin input valve is arranged on the mixed bed resin inlet pipe, and the mixed bed resin input valve is connected with a mixed bed resin inlet main valve; a resin conveying pipe before and after the mixed bed resin connection valve, a mixed bed air inlet pipe and a mixed bed drain pipe are arranged at the bottom of the high-speed mixed bed tank; a mixed bed air inlet valve is arranged on the mixed bed air inlet pipe, a mixed bed recirculation valve and a mixed bed system drain main valve are arranged on the mixed bed drain pipe, and a mixed bed resin output valve, a mixed bed resin outlet main valve and a mixed bed resin connection valve are arranged on the resin conveying pipe before and after the mixed bed resin connection valve; the resin conveying pipes before and after the mixed bed resin connection valve are respectively connected with the mixed bed resin inlet pipe and the resin conveying pipe, and the resin conveying pipe is connected with a cation resin conveying pipe; a cation resin regeneration tank inlet valve is arranged on the cation resin conveying pipe, and the cation resin conveying pipe is connected to the cation resin regeneration tank; a cation tank drain pipe is arranged on the cation resin regeneration tank, and a cation resin regeneration tank bottom drain valve is arranged on the cation tank drain pipe; the flushing water pump is connected with a flushing water pipe, and a regeneration resin conveying main pipe flushing water valve, a mixed bed bottom resin pipe flushing valve and a mixed bed upper resin pipe flushing water valve are arranged on the flushing water pipe.

[0006] Optionally, a resin separation tank inlet pipe is further connected to the resin conveying pipes before and after the mixed bed resin connection valve, the resin separation tank inlet pipe is connected to the resin separation tank, and a separation tank inlet valve is arranged on the resin separation tank inlet pipe.

[0007] Optionally, a second exhaust pipe is arranged at the top of the resin separation tank, a first resin outlet pipe is arranged at the bottom, and an anion resin conveying pipe is arranged in the middle; a separation tank exhaust valve is arranged on the second exhaust pipe, a separation tank cation resin outlet valve is arranged on the first resin outlet pipe, and the anion resin conveying pipe is connected to the anion resin regeneration tank; the first resin outlet pipe is connected to the resin conveying pipe.

[0008] Optionally, a third exhaust pipe is arranged at the top of the anion resin regeneration tank, and a second resin outlet pipe is arranged at the bottom; an anion resin regeneration tank exhaust valve is arranged on the third exhaust pipe; an anion resin regeneration tank resin outlet valve is arranged on the second resin outlet pipe; the second resin outlet pipe is connected to the resin conveying pipe.

[0009] Optionally, a fourth exhaust pipe is provided at the top of the cation resin regeneration tank, and a third resin discharge pipe is provided at the bottom; a cation resin regeneration tank exhaust valve is provided on the fourth exhaust pipe, and a cation resin regeneration tank resin discharge valve is provided on the third resin discharge pipe; the third resin discharge pipe is connected to the flushing water pipe.

[0010] Optionally, the mixed bed resin inlet pipe, the resin conveying pipes before and after the mixed bed resin connection valve, and the resin conveying pipe are connected to the flushing water pipe.

[0011] Optionally, the first exhaust pipe is connected to a first drainage trough, and the second exhaust pipe, the third exhaust pipe, and the fourth exhaust pipe are connected to a second drainage trough.

[0012] Optionally, the mixed bed drainage pipe is connected to a first drainage trough, and the cation tank drainage pipe is connected to a second drainage trough.

[0013] On the other hand, the present invention provides a process for conveying mixed bed resin. The process uses the system provided in the first aspect of the present invention, and the process includes: S1. Open the mixed bed exhaust valve and the mixed bed recirculation valve to relieve the pressure of the high-speed mixed bed tank. S2. Open the mixed bed resin output valve, the mixed bed air inlet valve, the mixed bed resin discharge main valve, the mixed bed resin connection valve, the mixed bed cation tank resin inlet valve, and the bottom drainage valve of the cation resin regeneration tank. The unspent resin is conveyed from the high-speed mixed bed tank through the resin conveying pipes before and after the mixed bed resin connection valve, the resin conveying pipe, and the cation resin conveying pipe to the cation resin regeneration tank. S3. Open the mixed bed resin output valve, the mixed bed air inlet valve, the mixed bed resin discharge main valve, the mixed bed resin connection valve, the mixed bed cation tank resin inlet valve, the bottom drainage valve of the cation resin regeneration tank, the upper resin pipe flushing valve of the mixed bed, and the mixed bed resin inlet valve. Start the flushing water pump. The unspent resin is continuously conveyed from the high-speed mixed bed tank through the resin conveying pipes before and after the mixed bed resin connection valve, the resin conveying pipe, and the cation resin conveying pipe to the cation resin regeneration tank.

[0014] Optionally, the process further includes: after conveying the unspent resin to the cation resin regeneration tank, open the mixed bed exhaust valve, the mixed bed recirculation valve, the bottom resin pipe flushing valve of the mixed bed, the mixed bed resin discharge main valve, the mixed bed system drainage main valve, the mixed bed resin connection valve, the mixed bed cation tank resin inlet valve, the bottom drainage valve of the mixed bed cation tank, the upper resin pipe flushing valve of the mixed bed, and the mixed bed resin inlet main valve. Start the flushing water pump. The flushing water enters the cation resin regeneration tank through the resin conveying pipes before and after the mixed bed resin connection valve, the resin conveying pipe, and the cation resin conveying pipe. Drainage of the high-speed mixed bed tank is achieved through the mixed bed recirculation valve and the mixed bed system drainage main valve; bottom drainage of the cation resin regeneration tank is achieved through the bottom drainage valve of the mixed bed cation tank; one-way flushing of the conveying pipes is completed.

[0015] Optionally, the process further includes: after the unexpired resin is conveyed to the cation resin regeneration tank, opening the mixed bed recirculation valve, the mixed bed exhaust valve, the bottom resin pipe flushing valve of the mixed bed, the total drainage valve of the mixed bed system, the total resin discharge valve of the mixed bed, the upper resin pipe flushing valve of the mixed bed, the total resin inlet valve of the mixed bed, the resin connection valve of the mixed bed, the cation tank resin inlet valve of the mixed bed, the bottom drainage valve of the cation resin regeneration tank of the mixed bed, and the flushing water valve of the main pipe for conveying the regenerated resin of the mixed bed, starting the flushing water pump, the flushing water enters the cation resin regeneration tank through the resin conveying pipelines before and after the resin connection valve of the mixed bed, the resin conveying pipeline, and the cation resin conveying pipeline, and the flushing water enters the cation resin regeneration tank through the flushing water pipeline, the flushing water valve of the main pipe for conveying the regenerated resin of the mixed bed, the cation resin conveying pipeline, and the cation tank resin inlet valve of the mixed bed; realizing the drainage of the high-speed mixed bed tank through the mixed bed recirculation valve and the total drainage valve of the mixed bed system; realizing the bottom drainage of the cation resin regeneration tank through the bottom drainage valve of the cation resin regeneration tank of the mixed bed; and completing the two-way flushing of the conveying pipeline.

[0016] Through the above technical solution, when the mixed bed resin is unexpired and the high-speed mixed bed has defects and needs to convey the resin to the storage system; when the resin is unexpired and needs to convey the high-speed mixed bed resin to the storage system due to temperature reasons; or when the resin is just put into operation and the degree of failure is extremely low and the resin needs to be switched during the start-up and shutdown of the unit, the present invention can directly convey the unexpired resin to the cation resin regeneration tank through the system valve sequence, realizing a new resin conveying method, reducing the stratification and conveying process of the anion and cation resins, saving demineralized water, reducing the resin wear rate, saving the conveying time, and realizing the rapid standby of the unexpired mixed bed resin.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the following specific implementation manners, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the mixed bed resin conveying system of the present invention.

[0019] Description of the Reference Numerals in the Drawings 1 - High - speed mixed - bed tank; 2 - Resin separation tank; 3 - Anion resin regeneration tank; 4 - Cation resin regeneration tank; 5 - Flushing water valve for the upper resin pipe of the mixed bed; 6 - Total valve for resin input to the mixed bed; 7 - Exhaust valve at the top of the mixed bed; 8 - Resin input valve of the mixed bed; 9 - Total valve for resin output from the mixed bed; 10 - Resin connection valve of the mixed bed; 11 - Recirculation valve of the mixed bed; 12 - Resin output valve of the mixed bed; 13 - Air inlet valve of the mixed bed; 14 - Total drainage valve of the mixed - bed system; 15 - Flushing valve for the bottom resin pipe of the mixed bed; 16 - Resin inlet valve of the separation tank; 17 - Exhaust valve of the separation tank; 18 - Valve for discharging cation resin from the separation tank; 19 - Exhaust valve of the anion resin regeneration tank; 20 - Resin discharge valve of the anion resin regeneration tank; 21 - Exhaust valve of the cation resin regeneration tank; 22 - Resin inlet valve of the cation resin regeneration tank; 23 - Bottom drainage valve of the cation resin regeneration tank; 24 - Resin discharge valve of the cation resin regeneration tank; 25 - Flushing water pump; 26 - Flushing water valve for the main pipe of regenerated resin transportation; 27 - Flushing water pipeline; 28 - Resin transportation pipeline; 29 - Anion resin transportation pipeline; 30 - Resin inlet pipeline of the resin separation tank; 31 - Resin transportation pipelines before and after the resin connection valve of the mixed bed; 32 - Cation resin transportation pipeline; 33 - First drainage trough; 34 - Second drainage trough. Detailed implementation manners

[0020] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0021] On the one hand, the present invention provides a mixed - bed resin transportation system, as Figure 1As shown in the figure, the system includes a high-speed mixed bed tank 1, a resin separation tank 2, an anion resin regeneration tank 3, a cation resin regeneration tank 4, and a flushing water pump 25. At the top of the high-speed mixed bed tank 1, a first exhaust pipeline and a mixed bed resin inlet pipeline are provided. A mixed bed top exhaust valve 7 is provided on the first exhaust pipeline, and a mixed bed resin input valve 8 is provided on the mixed bed resin inlet pipeline. The mixed bed resin input valve 8 is connected to a mixed bed resin inlet main valve 6. At the bottom of the high-speed mixed bed tank 1, a front and rear resin conveying pipeline 31 of the mixed bed resin connection valve, a mixed bed air inlet pipeline, and a mixed bed drainage pipeline are provided. A mixed bed air inlet valve 13 is provided on the mixed bed air inlet pipeline, a mixed bed recirculation valve 11 and a mixed bed system drainage main valve 14 are provided on the mixed bed drainage pipeline, and a mixed bed resin output valve 12, a mixed bed resin outlet main valve 9, and a mixed bed resin connection valve 10 are provided on the front and rear resin conveying pipeline 31 of the mixed bed resin connection valve. The front and rear resin conveying pipeline 31 of the mixed bed resin connection valve are respectively connected to the mixed bed resin inlet pipeline and a resin conveying pipeline 28, and the resin conveying pipeline 28 is connected to a cation resin conveying pipeline 32. A cation resin regeneration tank inlet valve 22 is provided on the cation resin conveying pipeline 32, and the cation resin conveying pipeline 32 is connected to the cation resin regeneration tank 4. The cation resin regeneration tank 4 is provided with a cation tank drainage pipeline, and a cation resin regeneration tank bottom drainage valve 23 is provided on the cation tank drainage pipeline. The flushing water pump 25 is connected to a flushing water pipeline 27, and a regeneration resin conveying main pipe flushing water valve 26, a mixed bed bottom resin pipe flushing valve 15, and a mixed bed upper resin pipe flushing water valve 5 are provided on the flushing water pipeline 27.

[0022] According to the present invention, optionally, the front and rear resin conveying pipeline 31 of the mixed bed resin connection valve is further connected to a resin separation tank inlet pipeline 30, the resin separation tank inlet pipeline 30 is connected to the resin separation tank 2, and a separation tank inlet valve 16 is provided on the resin separation tank inlet pipeline 30.

[0023] According to the present invention, optionally, at the top of the resin separation tank 2, a second exhaust pipeline is provided, at the bottom, a first resin outlet pipeline is provided, and in the middle, an anion resin conveying pipeline 29 is provided. A separation tank exhaust valve 17 is provided on the second exhaust pipeline, a separation tank cation resin outlet valve 18 is provided on the first resin outlet pipeline, the anion resin conveying pipeline 29 is connected to the anion resin regeneration tank 3, and the first resin outlet pipeline is connected to the resin conveying pipeline 28.

[0024] According to the present invention, optionally, at the top of the anion resin regeneration tank 3, a third exhaust pipeline is provided, and at the bottom, a second resin outlet pipeline is provided. An anion resin regeneration tank exhaust valve 19 is provided on the third exhaust pipeline, an anion resin regeneration tank resin outlet valve 20 is provided on the second resin outlet pipeline, and the second resin outlet pipeline is connected to the resin conveying pipeline 28.

[0025] According to the present invention, optionally, a fourth exhaust pipe is provided at the top of the cation resin regeneration tank 4, and a third resin discharge pipe is provided at the bottom; a cation resin regeneration tank exhaust valve 21 is provided on the fourth exhaust pipe, and a cation resin regeneration tank resin discharge valve 24 is provided on the third resin discharge pipe; the third resin discharge pipe is connected to the flushing water pipe 27.

[0026] According to the present invention, optionally, the mixed bed resin inlet pipe, the resin conveying pipes 31 before and after the mixed bed resin connection valve, and the resin conveying pipe 28 are connected to the flushing water pipe 27. The flushing water in the flushing water pipe 27 can flush the above pipes.

[0027] According to the present invention, optionally, the first exhaust pipe is connected to a first drainage trough 33, and the second exhaust pipe, the third exhaust pipe, and the fourth exhaust pipe are connected to a second drainage trough 34. The exhaust pipes of the present invention can also serve the drainage function.

[0028] According to the present invention, optionally, the mixed bed drainage pipe is connected to a first drainage trough 33, and the cation tank drainage pipe is connected to a second drainage trough 34.

[0029] According to the present invention, optionally, the first drainage trough 33 is arranged on one side of the high-speed mixed bed tank 1; the second drainage trough 34 is arranged on one side of the cation resin regeneration tank 4, and the first drainage trough 33 and the second drainage trough 34 are in an open state.

[0030] According to the present invention, optionally, the system further includes a DCS control module, and the system of the present invention is controlled by the DCS control module to realize the conveying of resin.

[0031] On the other hand, the present invention provides a mixed bed resin conveying process, which uses the system provided in the first aspect of the present invention. The process includes: S1. Mixed bed pressure relief: Open the mixed bed exhaust valve 7 and the mixed bed recirculation valve 11 to relieve the pressure of the high-speed mixed bed tank 1; when the pressure is relieved to be close to 0.1 MPa, the pressure relief is completed; S2. Mixed bed pneumatic resin output: Open the mixed bed resin output valve 12, the mixed bed air inlet valve 13, the mixed bed resin discharge main valve 9, the mixed bed resin connection valve 10, the mixed bed cation tank resin inlet valve 22, and the bottom drainage valve 23 of the cation resin regeneration tank to maintain the air chamber formed by the gas at the top of the high-speed mixed bed tank 1; the unspent resin is conveyed from the high-speed mixed bed tank 1 to the cation resin regeneration tank 4 through the resin conveying pipes 31 before and after the mixed bed resin connection valve, the resin conveying pipe 28, and the cation resin conveying pipe 32; after the conveying is completed, close the above opened valves; S3. Gas / hydraulic resin transportation in the mixed bed: Open the mixed bed resin output valve 12, the mixed bed air inlet valve 13, the total resin discharge valve 9 of the mixed bed, the resin connection valve 10 of the mixed bed, the resin inlet valve 22 of the mixed bed's positive tank, the bottom drain valve 23 of the positive resin regeneration tank, the upper resin pipe flushing valve 5 of the mixed bed, and the resin inlet valve 8 of the mixed bed. Maintain the air chamber formed by the gas at the top of the high-speed mixed bed tank 1, start the flushing water pump 25. The unexhausted resin is continuously transported from the high-speed mixed bed tank 1 to the positive resin regeneration tank 4 through the resin transportation pipelines 31 before and after the resin connection valve of the mixed bed, the resin transportation pipeline 28, and the positive resin transportation pipeline 32. After the transportation is completed, close the above-mentioned opened valves.

[0032] According to the present invention, optionally, the process further includes draining the mixed bed and performing a first flushing of the pipeline: After transporting the unexhausted resin to the positive resin regeneration tank 4, open the mixed bed exhaust valve 7, the mixed bed recirculation valve 11, the bottom resin pipe flushing valve 15 of the mixed bed, the total resin discharge valve 9 of the mixed bed, the total drainage valve 14 of the mixed bed system, the resin connection valve 10 of the mixed bed, the resin inlet valve 22 of the mixed bed's positive tank, the bottom drain valve 23 of the mixed bed's positive tank, the upper resin pipe flushing valve 5 of the mixed bed, and the total resin inlet valve 6 of the mixed bed, and start the flushing water pump 25. The flushing water enters the positive resin regeneration tank 4 through the resin transportation pipelines 31 before and after the resin connection valve of the mixed bed, the resin transportation pipeline 28, the positive resin transportation pipeline 32, and the resin inlet valve 22 of the mixed bed's positive tank. The high-speed mixed bed tank 1 is drained through the mixed bed recirculation valve 11 and the total drainage valve 14 of the mixed bed system; the bottom of the positive resin regeneration tank 4 is drained through the bottom drain valve 23 of the mixed bed's positive tank. Overall, the transportation pipeline is flushed unidirectionally, and after flushing, close the above-mentioned opened valves.

[0033] According to the present invention, optionally, the process further includes draining the mixed bed and performing a second flushing of the pipeline: After transporting the unexhausted resin to the positive resin regeneration tank 4, open the mixed bed recirculation valve 11, the mixed bed exhaust valve 7, the bottom resin pipe flushing valve 15 of the mixed bed, the total drainage valve 14 of the mixed bed system, the total resin discharge valve 9 of the mixed bed, the upper resin pipe flushing valve 5 of the mixed bed, the total resin inlet valve 6 of the mixed bed, the resin connection valve 10 of the mixed bed, the resin inlet valve 22 of the mixed bed's positive tank, the bottom drain valve 23 of the mixed bed's positive tank, and the flushing water valve 26 for the main pipe of the regenerated resin transportation in the mixed bed, and start the flushing water pump 25. The flushing water enters the positive resin regeneration tank 4 through the resin transportation pipelines 31 before and after the resin connection valve of the mixed bed, the resin transportation pipeline 28, the positive resin transportation pipeline 32, and the resin inlet valve 22 of the mixed bed's positive tank; the flushing water enters the positive resin regeneration tank 4 through the flushing water pipeline 27, the flushing water valve 26 for the main pipe of the regenerated resin transportation in the mixed bed, the positive resin transportation pipeline 32, and the resin inlet valve 22 of the mixed bed's positive tank; the high-speed mixed bed tank 1 is drained through the mixed bed recirculation valve 11 and the total drainage valve 14 of the mixed bed system; the bottom of the positive resin regeneration tank 4 is drained through the bottom drain valve 23 of the mixed bed's positive tank. Overall, the transportation pipeline is flushed bidirectionally, and after flushing, close the above-mentioned opened valves.

[0034] Through the above technical solution, when the mixed-bed resin is not exhausted and the high-speed mixed bed has defects and needs to transport the resin to the storage system; when the resin is not exhausted and needs to transport the high-speed mixed-bed resin to the storage system due to temperature reasons; or when the resin has just been put into operation and the degree of exhaustion is extremely low and the resin needs to be switched during the start-up and shutdown of the unit, the present invention can directly transport the unexhausted resin to the cation resin regeneration tank through the system valve sequence, realizing a new resin transportation method, reducing the stratification and transportation process of the anion and cation resins, saving demineralized water, reducing the resin wear rate, saving transportation time, and realizing the rapid standby of the unexhausted mixed-bed resin.

[0035] When the mixed-bed resin is exhausted, the mixed-bed resin transportation process of the present invention includes: Open the mixed-bed resin output valve 12, the mixed-bed resin output main valve 9, the mixed-bed resin connection valve 10, and the separation tank resin inlet valve 16. The exhausted resin is transported from the high-speed mixed-bed tank 1 to the resin separation tank 2 through the front and rear resin transportation pipelines 31 of the mixed-bed resin connection valve and the resin separation tank resin inlet pipeline 30. After the anion and cation resins are stratified in the resin separation tank 2, the anion resin is transported to the anion resin regeneration tank 3 through the anion resin output pipeline 29, and the cation resin is transported to the cation resin regeneration tank 4 through the separation tank cation resin outlet valve 18, the resin transportation pipeline 28, the cation resin transportation pipeline 32, and the cation resin regeneration tank resin inlet valve 22. After the anion and cation resins are regenerated or scrubbed in the anion resin regeneration tank 3 and the cation resin regeneration tank 4 respectively, the anion resin is transported from the anion resin regeneration tank 3 to the cation resin regeneration tank 4 through the anion resin regeneration tank resin outlet valve 20, the resin transportation pipeline 28, the cation resin transportation pipeline 32, and the cation resin regeneration tank resin inlet valve 22. The anion and cation resins are mixed and rinsed for standby.

[0036] The present invention will be further illustrated by the following examples, but the present invention is not limited thereby.

[0037] Example 1 This example provides a mixed-bed resin transportation system, which includes: High-speed mixed-bed tank 1, resin separation tank 2, anion resin regeneration tank 3, cation resin regeneration tank 4, flushing water pump 25 and DCS control module; at the top of the high-speed mixed-bed tank 1, there are a first exhaust pipeline and a mixed-bed resin inlet pipeline. The first exhaust pipeline is connected to a first drainage tank 33, and a mixed-bed top exhaust valve 7 is arranged on the first exhaust pipeline. A mixed-bed resin input valve 8 is arranged on the mixed-bed resin inlet pipeline, and the mixed-bed resin input valve 8 is connected to a mixed-bed resin inlet main valve 6; at the bottom of the high-speed mixed-bed tank 1, there are a front and rear resin conveying pipeline 31 of the mixed-bed resin connection valve, a mixed-bed air inlet pipeline and a mixed-bed drainage pipeline; a mixed-bed air inlet valve 13 is arranged on the mixed-bed air inlet pipeline, a mixed-bed recirculation valve 11 and a mixed-bed system drainage main valve 14 are arranged on the mixed-bed drainage pipeline, the mixed-bed drainage pipeline is connected to the first drainage tank 33, and a mixed-bed resin output valve 12, a mixed-bed resin outlet main valve 9 and a mixed-bed resin connection valve 10 are arranged on the front and rear resin conveying pipeline 31 of the mixed-bed resin connection valve; the front and rear resin conveying pipeline 31 of the mixed-bed resin connection valve are respectively connected to the mixed-bed resin inlet pipeline and a resin conveying pipeline 28, and the resin conveying pipeline 28 is connected to a cation resin conveying pipeline 32; a cation resin regeneration tank inlet valve 22 is arranged on the cation resin conveying pipeline 32, and the cation resin conveying pipeline 32 is connected to the cation resin regeneration tank 4; Inside the cation resin regeneration tank 4, there is a cation tank drainage pipeline, the cation tank drainage pipeline is connected to a second drainage tank 34, and a cation resin regeneration tank bottom drainage valve 23 is arranged on the cation tank drainage pipeline; the flushing water pump 25 is connected to a flushing water pipeline 27, and a regeneration resin conveying main pipe flushing water valve 26, a mixed-bed bottom resin pipe flushing valve 15 and a mixed-bed upper resin pipe flushing water valve 5 are arranged on the flushing water pipeline 27; the mixed-bed resin inlet pipeline, the front and rear resin conveying pipeline 31 of the mixed-bed resin connection valve and the resin conveying pipeline 28 are connected to the flushing water pipeline 27; at the top of the cation resin regeneration tank 4, there is a fourth exhaust pipeline, and at the bottom, there is a third resin outlet pipeline; the fourth exhaust pipeline is connected to the second drainage tank 34, a cation resin regeneration tank exhaust valve 21 is arranged on the fourth exhaust pipeline, and a cation resin regeneration tank resin outlet valve 24 is arranged on the third resin outlet pipeline; the third resin outlet pipeline is connected to the flushing water pipeline 27; The resin transfer pipelines 31 before and after the mixed bed resin connection valve are also connected with a resin separation tank inlet resin pipeline 30. The resin separation tank inlet resin pipeline 30 is connected to the resin separation tank 2. A separation tank inlet resin valve 16 is provided on the resin separation tank inlet resin pipeline 30. A second exhaust pipeline is provided at the top of the resin separation tank 2, a first resin outlet pipeline is provided at the bottom, and an anion resin transfer pipeline 29 is provided in the middle. A separation tank exhaust valve 17 is provided on the second exhaust pipeline, a separation tank outlet cation resin valve 18 is provided on the first resin outlet pipeline, and the anion resin transfer pipeline 29 is connected to the anion resin regeneration tank 3. The first resin outlet pipeline is connected to the resin transfer pipeline 28. A third exhaust pipeline is provided at the top of the anion resin regeneration tank 3, and a second resin outlet pipeline is provided at the bottom. An anion resin regeneration tank exhaust valve 19 is provided on the third exhaust pipeline. An anion resin regeneration tank resin outlet valve 20 is provided on the second resin outlet pipeline. The second resin outlet pipeline is connected to the resin transfer pipeline 28. The second exhaust pipeline and the third exhaust pipeline are connected to a second drainage tank 34.

[0038] Example 2 This embodiment provides a mixed bed resin transfer process. This process uses the system of Example 1. This process includes: S1. Mixed bed pressure relief: Open the mixed bed exhaust valve 7 and the mixed bed recirculation valve 11 to relieve the pressure of the high-speed mixed bed tank 1. When the pressure is close to 0.1 MPa, the pressure relief is completed. S2. Mixed bed pneumatic output of resin: Open the mixed bed resin output valve 12, the mixed bed inlet air valve 13, the mixed bed total resin outlet valve 9, the mixed bed resin connection valve 10, the mixed bed cation tank inlet resin valve 22, and the bottom drainage valve 23 of the cation resin regeneration tank. The unspent resin is transported from the high-speed mixed bed tank 1 to the cation resin regeneration tank 4 through the resin transfer pipelines 31 before and after the mixed bed resin connection valve, the resin transfer pipeline 28, and the cation resin transfer pipeline 32. Maintain the air chamber at the top of the high-speed mixed bed tank 1. After the transportation is completed, close the above-mentioned opened valves. S3. Mixed bed gas / hydraulic transfer of resin: Open the mixed bed resin output valve 12, the mixed bed inlet air valve 13, the mixed bed total resin outlet valve 9, the mixed bed resin connection valve 10, the mixed bed cation tank inlet resin valve 22, the bottom drainage valve 23 of the cation resin regeneration tank, the upper resin pipe flushing valve 5 of the mixed bed, and the mixed bed inlet resin valve 8. Start the flushing water pump 25. The unspent resin is continuously transported from the high-speed mixed bed tank 1 to the cation resin regeneration tank 4 through the resin transfer pipelines 31 before and after the mixed bed resin connection valve, the resin transfer pipeline 28, and the cation resin transfer pipeline 32. Maintain the air chamber at the top of the high-speed mixed bed tank 1. After the transportation is completed, close the above-mentioned opened valves. S4. Drain the mixed bed and conduct the first pipeline flushing: After the unexhausted resin is transported to the cation resin regeneration tank 4, open the mixed bed exhaust valve 7, the mixed bed recirculation valve 11, the mixed bed bottom resin pipe flushing valve 15, the mixed bed resin discharge main valve 9, the mixed bed system drainage main valve 14, the mixed bed resin connection valve 10, the mixed bed cation tank resin inlet valve 22, the mixed bed cation tank bottom drainage valve 23, the mixed bed upper resin pipe flushing valve 5, and the mixed bed resin inlet main valve 6, and start the flushing water pump 25. The flushing water enters the cation resin regeneration tank 4 through the resin transport pipelines 31 before and after the mixed bed resin connection valve, the resin transport pipeline 28, and the cation resin transport pipeline 32. Drain the high-speed mixed bed tank 1 through the mixed bed recirculation valve 11 and the mixed bed system drainage main valve 14; drain the bottom of the cation resin regeneration tank 4 through the mixed bed cation tank bottom drainage valve 23. Overall, conduct one-way flushing of the transport pipelines, and then close the above-mentioned opened valves; S5. Drain the mixed bed and conduct the second pipeline flushing: After the unexhausted resin is transported to the cation resin regeneration tank 4, open the mixed bed recirculation valve 11, the mixed bed exhaust valve 7, the mixed bed bottom resin pipe flushing valve 15, the mixed bed system drainage main valve 14, the mixed bed resin discharge main valve 9, the mixed bed upper resin pipe flushing valve 5, the mixed bed resin inlet main valve 6, the mixed bed resin connection valve 10, the mixed bed cation tank resin inlet valve 22, the mixed bed cation tank bottom drainage valve 23, and the mixed bed regenerated resin transport main pipe flushing water valve 26, and start the flushing water pump 25. The flushing water enters the cation resin regeneration tank 4 through the resin transport pipelines 31 before and after the mixed bed resin connection valve, the resin transport pipeline 28, the cation resin transport pipeline 32, and the mixed bed cation tank resin inlet valve 22; the flushing water enters the cation resin regeneration tank 4 through the flushing water pipeline 27, the mixed bed regenerated resin transport main pipe flushing water valve 26, the cation resin transport pipeline 32, and the mixed bed cation tank resin inlet valve 22; drain the high-speed mixed bed tank 1 through the mixed bed recirculation valve 11 and the mixed bed system drainage main valve 14; drain the bottom of the cation resin regeneration tank 4 through the mixed bed cation tank bottom drainage valve 23. Overall, conduct two-way flushing of the transport pipelines, and then close the above-mentioned opened valves.

[0039] Through the transport system and technological process of the embodiment, it is possible to directly transport the unexhausted mixed bed resin to the cation resin regeneration tank. Through six on-site experiments, the resin is transported cleanly and thoroughly, the pipelines are flushed cleanly, and the operation is convenient. Through the DCS control module, the operator can directly give commands on the monitoring computer screen to start the program and achieve the purpose of resin transport.

[0040] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0041] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination manners.

[0042] In addition, any combination can also be made among various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A mixed bed resin delivery system, characterized in that: The system comprises a high-speed mixed bed tank (1), a resin separation tank (2), an anion resin regeneration tank (3), a cation resin regeneration tank (4) and a flushing water pump (25); The top of the high-speed mixed bed tank (1) is provided with a first exhaust pipe and a mixed bed fat inlet pipe, the first exhaust pipe is provided with a mixed bed top exhaust valve (7), the mixed bed fat inlet pipe is provided with a mixed bed resin inlet valve (8), and the mixed bed resin inlet valve (8) is connected to a mixed bed fat inlet main valve (6); The bottom of the high-speed mixed bed tank (1) is provided with resin delivery pipes (31) before and after the mixed bed resin communication valve, a mixed bed air intake pipe and a mixed bed drainage pipe; the mixed bed air intake pipe is provided with a mixed bed air intake valve (13), the mixed bed drainage pipe is provided with a mixed bed recirculation valve (11) and a mixed bed system drainage main valve (14), and the resin delivery pipes (31) before and after the mixed bed resin communication valve are provided with a mixed bed resin output valve (12), a mixed bed fat outlet main valve (9) and a mixed bed resin communication valve (10); The resin delivery pipes (31) before and after the mixed bed resin connection valve are respectively connected to the mixed bed fat inlet pipe and the resin delivery pipe (28), and the resin delivery pipe (28) is connected to a positive resin delivery pipe (32); a positive resin regeneration tank fat inlet valve (22) is provided on the positive resin delivery pipe (32), and the positive resin delivery pipe (32) is connected to the positive resin regeneration tank (4); The cation resin regeneration tank (4) is provided with a cation tank drainage pipeline, and a cation resin regeneration tank bottom drainage valve (23) is provided on the cation tank drainage pipeline; The flushing water pump (25) is connected to a flushing water pipeline (27), and the flushing water pipeline (27) is provided with a regenerated resin delivery main pipe flushing water valve (26), a mixed bed bottom resin pipe flushing valve (15), and a mixed bed top resin pipe flushing water valve (5).

2. The system according to claim 1, wherein: The resin delivery pipeline (31) before and after the mixed bed resin connecting valve is also connected to a resin separation tank fat inlet pipeline (30), the resin separation tank fat inlet pipeline (30) is connected to the resin separation tank (2), and a separation tank fat inlet valve (16) is provided on the resin separation tank fat inlet pipeline (30).

3. The system according to claim 2, wherein: The resin separation tank (2) is provided with a second exhaust pipe at the top, a first fat outlet pipe at the bottom, and a negative resin delivery pipe (29) at the middle. The second exhaust pipe is provided with a separation tank exhaust valve (17), the first fat outlet pipe is provided with a separation tank positive resin outlet valve (18), the negative resin delivery pipe (29) is connected to the negative resin regeneration tank (3); the first fat outlet pipe is connected to the resin delivery pipe (28).

4. The system according to claim 3, wherein: The anion resin regeneration tank (3) is provided with a third exhaust pipe at the top and a second fat outlet pipe at the bottom; The third exhaust pipe is provided with a negative resin regeneration tank exhaust valve (19); the second fat outlet pipe is provided with a negative resin regeneration tank fat outlet valve (20); the second fat outlet pipe is connected to the resin delivery pipe (28).

5. The system according to claim 1, wherein: The top of the cation resin regeneration tank (4) is provided with a fourth exhaust pipe, and the bottom is provided with a third fat outlet pipe; The fourth exhaust pipe is provided with a cation resin regeneration tank exhaust valve (21), and the third grease outlet pipe is provided with a cation resin regeneration tank grease outlet valve (24); the third grease outlet pipe is connected to the flushing water pipe (27).

6. The system according to claim 1, wherein: The mixed bed resin inlet pipeline, the mixed bed resin connection valve front and rear resin delivery pipelines (31), and the resin delivery pipeline (28) are connected to the flushing water pipeline (27).

7. The system according to any one of claims 1 to 6, wherein: The first exhaust pipe is connected to a first drain groove (33), and the second exhaust pipe, the third exhaust pipe and the fourth exhaust pipe are connected to a second drain groove (34); The mixed bed drainage pipeline is connected to a first drainage trough (33), and the positive tank drainage pipeline is connected to a second drainage trough (34).

8. A mixed bed resin delivery process, characterized in that: The process uses the system according to any one of claims 1 to 7, and the process comprises: S1, opening the mixed bed exhaust valve (7) and the mixed bed recirculation valve (11) to release the pressure of the high-speed mixed bed tank (1); S2, opening the mixed bed resin output valve (12), the mixed bed air inlet valve (13), the mixed bed fat outlet main valve (9), the mixed bed resin connecting valve (10), the mixed bed cation tank fat inlet valve (22), and the cation resin regeneration tank bottom drain valve (23), and the unexpired resin is transported from the high-speed mixed bed tank (1) to the cation resin regeneration tank (4) via the mixed bed resin connecting valve front and rear resin transport pipes (31), the resin transport pipe (28), and the cation resin transport pipe (32); S3, open the mixed bed resin output valve (12), the mixed bed air inlet valve (13), the mixed bed fat outlet main valve (9), the mixed bed resin connecting valve (10), the mixed bed cation tank fat inlet valve (22), the cation resin regeneration tank bottom drain valve (23), the mixed bed upper resin pipe flushing valve (5), and the mixed bed fat inlet valve (8), start the flushing water pump (25), and the unexpired resin is continuously transported from the high-speed mixed bed tank (1) to the cation resin regeneration tank (4) through the mixed bed resin connecting valve front and rear resin delivery pipes (31), the resin delivery pipe (28), and the cation resin delivery pipe (32).

9. The process according to claim 8, wherein The process also includes: After the unexpired resin is transported to the cation resin regeneration tank (4), the mixed bed exhaust valve (7), the mixed bed recirculation valve (11), the mixed bed bottom resin pipe flushing valve (15), the mixed bed fat outlet main valve (9), the mixed bed system drainage main valve (14), the mixed bed resin communication valve (10), the mixed bed cation tank fat inlet valve (22), the mixed bed cation tank bottom drainage valve (23), the mixed bed upper resin pipe flushing valve (5), the mixed bed fat inlet main valve (6) are opened, and the flushing water pump (25) is started; The flushing water enters the cation resin regeneration tank (4) through the resin delivery pipes (31) before and after the mixed bed resin connecting valve, the resin delivery pipe (28), the cation resin delivery pipe (32), and the mixed bed cation tank fat inlet valve (22); the high-speed mixed bed tank (1) is drained through the mixed bed recirculation valve (11) and the mixed bed system drainage main valve (14); the bottom of the cation resin regeneration tank (4) is drained through the mixed bed cation tank bottom drainage valve (23); and the one-way flushing of the delivery pipe is completed.

10. The process according to claim 8, wherein: The process also includes: After the unexpired resin is transported to the cation resin regeneration tank (4), the mixed bed recirculation valve (11), the mixed bed exhaust valve (7), the mixed bed bottom resin pipe flushing valve (15), the mixed bed system drainage main valve (14), the mixed bed fat outlet main valve (9), the mixed bed upper resin pipe flushing valve (5), the mixed bed fat inlet main valve (6), the mixed bed resin communication valve (10), the mixed bed cation tank fat inlet valve (22), the mixed bed cation tank bottom drainage valve (23), the mixed bed regeneration resin transport main pipe flushing water valve (26), and the flushing water pump (25) are started; The flushing water enters the cation resin regeneration tank (4) through the resin delivery pipes (31) before and after the mixed bed resin connecting valve, the resin delivery pipe (28), the cation resin delivery pipe (32), and the mixed bed cation tank fat inlet valve (22); the flushing water enters the cation resin regeneration tank (4) through the flushing water pipe (27), the mixed bed regeneration resin delivery main pipe flushing water valve (26), the cation resin delivery pipe (32), and the mixed bed cation tank fat inlet valve (22); the high-speed mixed bed tank (1) is drained through the mixed bed recirculation valve (11) and the mixed bed system drain main valve (14); the bottom of the cation resin regeneration tank (4) is drained through the mixed bed cation tank bottom drain valve (23); and the two-way flushing of the delivery pipe is completed.

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