CN210716976U - Machine seals sparge water recovery system of recycling - Google Patents
Machine seals sparge water recovery system of recycling Download PDFInfo
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- CN210716976U CN210716976U CN201921491921.7U CN201921491921U CN210716976U CN 210716976 U CN210716976 U CN 210716976U CN 201921491921 U CN201921491921 U CN 201921491921U CN 210716976 U CN210716976 U CN 210716976U
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Abstract
A machine seal washing water recycling system comprises a collecting tank, a water pump and a heat exchanger, wherein a water outlet of the collecting tank is connected with a water inlet of the heat exchanger through a pipeline, the water pump is arranged on a pipeline between the water outlet of the collecting tank and the water inlet of the heat exchanger, an input end and an output end of the water pump are respectively provided with a first cut-off valve and a third cut-off valve, and a check valve is arranged on a pipeline between the third cut-off valve and the water inlet of the; a machine seal cooling water pipe is arranged at the top of the collecting tank, and a machine seal cooling water inlet valve is arranged on the machine seal cooling water pipe; the heat exchanger is provided with a machine seal cooling water upper water pipe, the machine seal cooling water upper water pipe is provided with a machine seal cooling water upper water main valve, the heat exchanger is provided with a circulating cooling water upper water pipe, and the circulating cooling water upper water pipe is provided with a circulating cooling water upper water valve; and a circulating cooling water return pipe is arranged on the heat exchanger, and a return water regulating valve is arranged on the circulating cooling water return pipe. The system can achieve the purpose of machine seal flushing water cooling recycling.
Description
Technical Field
The utility model belongs to the technical field of the machine seals sparge water processing, in particular to machine seals sparge water recovery system of recycling.
Background
At present in caprolactam production, the machine pump that the ammonium sulfate technology adopted all is the centrifugal pump, need the cooling water to cool off the machine seal, and the cooling water can not effectually be collected, about the waste water of 6m3 produces per hour, waste water pH is 7~8, the ammonia nitrogen is 100, the machine pump machine seal is revealed, COD, ammonia nitrogen can greatly increased, return system, can cause certain influence to the technology, all send to the sewage workshop section and handle, the load of the waste water treatment system that can increase, in daily patrolling and examining, also can not ensure that post personnel in time discover the machine seal condition of revealing.
Disclosure of Invention
In view of the technical problems in the prior art, the machine seal flushing water recycling system provided by the utility model has the advantages that the machine seal flushing water is collected in the collecting tank and is conveyed to the heat exchanger through the water pump to exchange heat and then is conveyed to each machine pump cooler seal; thereby achieving the purpose of cooling and recycling the machine seal flushing water; meanwhile, the water quality condition of machine seal flushing water can be detected, and the machine seal flushing water is replaced through desalted water.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a machine seal washing water recycling system comprises a collecting tank, a water pump and a heat exchanger, wherein a water outlet of the collecting tank is connected with a water inlet of the heat exchanger through a pipeline, the water pump is arranged on a pipeline between the water outlet of the collecting tank and the water inlet of the heat exchanger, an input end and an output end of the water pump are respectively provided with a first cut-off valve and a third cut-off valve, and a check valve is arranged on a pipeline between the third cut-off valve and the water inlet of the; a machine seal cooling water pipe is arranged at the top of the collecting tank, and a machine seal cooling water inlet valve is arranged on the machine seal cooling water pipe;
the heat exchanger is provided with a machine seal cooling water upper water pipe, the machine seal cooling water upper water pipe is provided with a machine seal cooling water upper water main valve, the heat exchanger is provided with a circulating cooling water upper water pipe, and the circulating cooling water upper water pipe is provided with a circulating cooling water upper water valve; and a circulating cooling water return pipe is arranged on the heat exchanger, and a return water regulating valve is arranged on the circulating cooling water return pipe.
In the preferred scheme, the output end of the third cut-off valve is provided with a first PH measuring instrument and an ammonia nitrogen instrument, and the input end of the machine seal cooling water inlet valve is provided with a second PH measuring instrument.
In a preferred scheme, a liquid level meter is arranged at the top of the collecting tank.
In the preferred scheme, a waste water pipe is connected to a pipeline between the water pump and the input end of the third stop valve, and a second stop valve is arranged on the waste water pipe.
In the preferred scheme, the pipeline between check valve and the heat exchanger water inlet on be equipped with the fourth trip valve, be equipped with the back flow on the pipeline between fourth trip valve and the check valve, the back flow other end and collecting vat top intercommunication are equipped with the backwash valve on the back flow.
In the preferred scheme, a desalted water inlet pipe is arranged on a pipeline between the output end of the fourth cut-off valve and the water inlet of the heat exchanger, and a desalted water replenishing valve is arranged on the desalted water inlet pipe.
In the preferred scheme, the return water regulating valve is a temperature regulating valve, and a temperature measuring point of the return water regulating valve is taken to an upper water pipe of the mechanical seal cooling water.
This patent can reach following beneficial effect:
1. machine seal flushing water is collected in the collecting tank, conveyed to the heat exchanger through the water pump for heat exchange and then conveyed to each machine pump cooler seal; thereby achieving the purpose of cooling and recycling machine seal flushing water.
2. The first PH measuring instrument, the second PH measuring instrument and the ammonia nitrogen instrument are used for detecting whether the machine seal leakage condition exists, when the machine seal flushing water does not meet the requirement, the machine seal cooling water is switched into demineralized water, and the machine seal flushing water in the collecting tank is discharged to a sewage treatment working section; thus, the influence of the unqualified machine seal cooling water on the ammonium sulfate process is avoided.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a system structure diagram of the present invention.
In the figure: the device comprises a collecting tank 1, a water pump 2, a heat exchanger 3, a machine seal flushing water backwater main valve 4, a first cut-off valve 5, a second cut-off valve 6, a third cut-off valve 7, a fourth cut-off valve 8, a demineralized water replenishing valve 9, a backwater regulating valve 10, a machine seal cooling water main valve 11, a circulating cooling water upper valve 12 and a reflux valve 13.
Detailed Description
The preferable scheme is as shown in fig. 1, the machine seal washing water recycling system comprises a collecting tank 1, a water pump 2 and a heat exchanger 3, wherein a water outlet of the collecting tank 1 is connected with a water inlet of the heat exchanger 3 through a pipeline, the water pump 2 is arranged on a pipeline between the water outlet of the collecting tank 1 and the water inlet of the heat exchanger 3, an input end and an output end of the water pump 2 are respectively provided with a first cut-off valve 5 and a third cut-off valve 7, and a pipeline between the third cut-off valve 7 and the water inlet of the heat exchanger 3 is; a machine seal cooling water pipe is arranged at the top of the collecting tank 1, and a machine seal cooling water inlet valve 4 is arranged on the machine seal cooling water pipe;
a machine seal cooling water upper water pipe is arranged on the heat exchanger 3, a machine seal cooling water upper water main valve 11 is arranged on the machine seal cooling water upper water pipe, a circulating cooling water upper water pipe is arranged on the heat exchanger 3, and a circulating cooling water upper water valve 12 is arranged on the circulating cooling water upper water pipe; and a circulating cooling water return pipe is arranged on the heat exchanger 3, and a return water regulating valve 10 is arranged on the circulating cooling water return pipe.
The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, and the heat exchanger can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in the chemical industry production. The heat exchanger 3 of this technical scheme adopts circulating cooling water as coolant, and circulating cooling water circulates in the coil pipe in the heat exchanger 3, takes away the heat in the heat exchanger 3 simultaneously to play the purpose that the cooler sealed the sparge water.
The collecting tank 1 is used for collecting machine seal washing water in a centralized mode, then the machine seal washing water is sent to the heat exchanger 3 through the water pump 2 in a pumping mode, and the cooled machine seal washing water becomes cooling machine seal cooling water to achieve the purpose of recycling.
Further, the output end of the third cut-off valve 7 is provided with a first PH measuring instrument and an ammonia nitrogen instrument, and the input end of the machine seal cooling water inlet valve 4 is provided with a second PH measuring instrument. First PH measuring apparatu, second PH measuring apparatu all can be used to detect whether there is the machine to seal the condition of revealing can, and detection numerical value shows pH suddenly >10 or pH <4, perhaps collecting vat 1 liquid level constantly descends, can judge that the machine seals the condition of revealing. The second PH measuring instrument detects that the pH is more than or equal to 10 or the ammonia nitrogen instrument displays that the ammonia nitrogen is more than or equal to 1000, and the sewage discharge is needed. The models of the first PH measuring instrument and the second PH measuring instrument are recommended as follows: e + H CPM 253/223; the model of the ammonia nitrogen instrument is recommended as follows: TresCon UNOA 111.
Further, a liquid level meter is arranged at the top of the collecting tank 1. The level gauge is used to monitor the change in the liquid level in the collecting tank 1. The liquid level meter can adopt an ultrasonic liquid level meter, and the model is recommended as follows: e + H CPM 253/223.
Furthermore, a waste water pipe is connected to a pipeline between the water pump 2 and the input end of the third stop valve 7, and a second stop valve 6 is arranged on the waste water pipe. Machine seal flushing water can be periodically discharged through a waste pipe.
Further, be equipped with fourth trip valve 8 on the pipeline between check valve and the 3 water inlets of heat exchanger, be equipped with the back flow on the pipeline between fourth trip valve 8 and the check valve, the back flow other end and 1 top intercommunication in collecting vat are equipped with the backward flow valve 13 on the back flow.
Furthermore, a demineralized water inlet pipe is arranged on a pipeline between the output end of the fourth stop valve 8 and the water inlet of the heat exchanger 3, and a demineralized water replenishing valve 9 is arranged on the demineralized water inlet pipe.
Further, the return water regulating valve 10 is a temperature regulating valve, and a temperature measuring point of the return water regulating valve 10 is taken to the machine-sealed cooling water upper water pipe.
The working principle of the whole device is as follows:
opening a circulating cooling water upper water valve 12, a slightly opened water return regulating valve 10, a mechanically sealed cooling water upper water main valve 11 and a mechanically sealed washing water return main valve 4 of the heat exchanger 3, opening a demineralized water supplementing valve 9, sending demineralized water to a mechanical seal for cooling, and after the flow is stable, putting the regulating valve 10 into an automatic mode;
when the liquid level of the collection tank 1 is 50%, opening the first cut-off valve 5, the third cut-off valve 7 and the fourth cut-off valve 8, and starting the water pump 2; if the liquid level in the collecting tank 1 exceeds 70%, closing the demineralized water replenishing valve 9;
after the system operates for a period of time, the first PH measuring instrument and the ammonia nitrogen instrument at the output end of the third cut-off valve 7 are increased, after a certain value is reached, the demineralized water replenishing valve 9 is opened, the fourth cut-off valve 8 is closed, the second cut-off valve 6 is opened, and the wastewater is sent to a sewage working section;
when the liquid level of the collecting tank 1 is zero, closing the second stop valve 6, opening the reflux valve 13, circularly cleaning, when the liquid level reaches 5%, opening the second stop valve 6, closing the reflux valve 13, emptying the collecting tank 1, closing the second stop valve 6 and stopping the water pump 2; when the liquid level is 50%, the water pump 2 is started, the fourth cut-off valve 8 is opened, and the demineralized water replenishing valve 9 is closed after the liquid level is stable.
Claims (7)
1. The utility model provides a machine seals sparge water recovery system of recycling which characterized in that: the collecting tank comprises a collecting tank (1), a water pump (2) and a heat exchanger (3), wherein a water outlet of the collecting tank (1) is connected with a water inlet of the heat exchanger (3) through a pipeline, the water pump (2) is arranged on the pipeline between the water outlet of the collecting tank (1) and the water inlet of the heat exchanger (3), an input end and an output end of the water pump (2) are respectively provided with a first cut-off valve (5) and a third cut-off valve (7), and a check valve is arranged on the pipeline between the third cut-off valve (7) and the water inlet; a machine seal cooling water pipe is arranged at the top of the collecting tank (1), and a machine seal cooling water inlet valve (4) is arranged on the machine seal cooling water pipe;
a machine seal cooling water upper water pipe is arranged on the heat exchanger (3), a machine seal cooling water upper water main valve (11) is arranged on the machine seal cooling water upper water pipe, a circulating cooling water upper water pipe is arranged on the heat exchanger (3), and a circulating cooling water upper water valve (12) is arranged on the circulating cooling water upper water pipe; a circulating cooling water return pipe is arranged on the heat exchanger (3), and a return water regulating valve (10) is arranged on the circulating cooling water return pipe.
2. The machine seal flushing water recycling system of claim 1, characterized in that: the output end of the third cut-off valve (7) is provided with a first PH measuring instrument and an ammonia nitrogen instrument, and the input end of the machine seal cooling water inlet valve (4) is provided with a second PH measuring instrument.
3. The machine seal flushing water recycling system of claim 1, characterized in that: a liquid level meter is arranged at the top of the collecting tank (1).
4. The machine seal flushing water recycling system of claim 1, characterized in that: and a waste water pipe is connected on a pipeline between the water pump (2) and the input end of the third stop valve (7), and a second stop valve (6) is arranged on the waste water pipe.
5. The machine seal flushing water recycling system of claim 1, characterized in that: be equipped with fourth trip valve (8) on the pipeline between check valve and heat exchanger (3) water inlet, be equipped with the back flow on the pipeline between fourth trip valve (8) and the check valve, the back flow other end communicates with collecting vat (1) top, is equipped with reflux valve (13) on the back flow.
6. The machine seal flushing water recycling system of claim 5, characterized in that: a demineralized water inlet pipe is arranged on a pipeline between the output end of the fourth cut-off valve (8) and the water inlet of the heat exchanger (3), and a demineralized water replenishing valve (9) is arranged on the demineralized water inlet pipe.
7. The machine seal flushing water recycling system of claim 1, characterized in that: the return water regulating valve (10) is a temperature regulating valve, and a temperature measuring point of the return water regulating valve (10) is taken to the machine-sealed cooling water upper water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921491921.7U CN210716976U (en) | 2019-09-09 | 2019-09-09 | Machine seals sparge water recovery system of recycling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921491921.7U CN210716976U (en) | 2019-09-09 | 2019-09-09 | Machine seals sparge water recovery system of recycling |
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| CN210716976U true CN210716976U (en) | 2020-06-09 |
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| CN201921491921.7U Active CN210716976U (en) | 2019-09-09 | 2019-09-09 | Machine seals sparge water recovery system of recycling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090018A (en) * | 2022-06-30 | 2022-09-23 | 重庆海浦洛自动化科技有限公司 | Backwashing filtering method |
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2019
- 2019-09-09 CN CN201921491921.7U patent/CN210716976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090018A (en) * | 2022-06-30 | 2022-09-23 | 重庆海浦洛自动化科技有限公司 | Backwashing filtering method |
| CN115090018B (en) * | 2022-06-30 | 2023-06-23 | 重庆海浦洛自动化科技有限公司 | Back flushing filtering method |
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