CN217602897U - Urea ammonia pump machine seals water recycle system - Google Patents
Urea ammonia pump machine seals water recycle system Download PDFInfo
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- CN217602897U CN217602897U CN202221269652.1U CN202221269652U CN217602897U CN 217602897 U CN217602897 U CN 217602897U CN 202221269652 U CN202221269652 U CN 202221269652U CN 217602897 U CN217602897 U CN 217602897U
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Abstract
The utility model discloses a urea ammonia pump machine water-sealing recycling system, which comprises a closed machine water-sealing storage tank and a machine water-sealing delivery pump, wherein the machine water-sealing storage tank is connected with a machine water-sealing outlet of an ammonia pump through a valve and a pipeline, the inlet side of the machine water-sealing delivery pump is connected with the machine water-sealing storage tank through a pipeline, and the outlet side of the machine water-sealing delivery pump is connected with a water-replenishing point of a flue gas desulfurization tower through a pipeline; this system is collected the quick-witted water storage tank that seals with urea ammonia pump machine seal water, and the quick-witted water of sealing in the quick-witted water storage tank is carried to the flue gas desulfurization tower moisturizing point by quick-witted water delivery pump that seals, and the water and the ammonia of machine seal water are as the flue gas desulfurization raw materials, have reduced flue gas desulfurization liquid ammonia consumption, and the water resource has also obtained make full use of, has reduced the cost expense that urea device hydrolysises, desorption system handles waste water simultaneously, has reduced steam consumption.
Description
Technical Field
The utility model relates to a urea production field, in particular to urea ammonia pump machine water recycle system.
Background
The state has very strict control on the wastewater discharge index of chemical production enterprises, so the urea production wastewater is collected in a closed way and sent to a urea device for hydrolysis and desorption system for recovery treatment. The urea production wastewater is mainly sourced from system leakage, system replacement, sealing water of each pump, flushing water, steam condensate swept by each sampling point and the like, the water quality difference of each part is large, the urea production wastewater is generally mixed and collected at present, the treatment cost of desorption wastewater is increased, the steam consumption is increased, and a large amount of water resources and ammonia are wasted.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a urea ammonia pump machine seals water recycle system, can make full use of urea ammonia pump machine seals water, can reduce the cost expense that the urea device hydrolysises, desorption system handles waste water simultaneously, reduces steam consumption.
The utility model aims at realizing through the following technical scheme:
urea ammonia pump machine seals water recycle system, including inclosed machine seal water storage tank and machine seal water delivery pump, the machine seals the water storage tank and links to each other through valve and pipeline and ammonia pump machine seal water export, machine seals water delivery pump entry side and links to each other through pipeline and machine seal water storage tank, the outlet side links to each other through pipeline and flue gas desulfurization tower moisturizing point.
Further, the upper part of the side surface of the machine seal water storage tank is provided with an overflow port, the overflow port is connected with an overflow pipe, and the lower end of the overflow pipe is arranged below the liquid level of ammonia absorption solution in the water seal device.
Further, the water seal device is provided with a gas ammonia absorption solution inlet, and the bottom of the water seal device is provided with a discharge port capable of discharging the mixed solution into a trench.
Furthermore, the upper part of the side surface of the water seal device is provided with an overflow outlet which can discharge the mixed solution into a trench.
Further, the upper portion of the machine-sealed water storage tank is provided with an exhaust pipe, the top end of the exhaust pipe is connected with the lower portion of an ammonia recovery device, the top of the ammonia recovery device is open, an ammonia absorption liquid spraying structure is arranged on the inner upper portion of the ammonia recovery device, and the bottom of the ammonia recovery device is connected with the machine-sealed water storage tank through a liquid discharge pipe.
Furthermore, a conductivity meter is arranged on a pipeline between the mechanical seal water outlet of the ammonia pump and the mechanical seal water storage tank.
Furthermore, the number of the ammonia pumps is two, the water sealing outlets of the two ammonia pumps are respectively connected with a water outlet pipe, the free ends of the water outlet pipes are connected with a main pipeline and an auxiliary pipeline, the other end of the main pipeline is connected with a recovery pipe, the other end of the recovery pipe is connected with a water sealing storage tank, valves are respectively arranged on the two main pipelines, the other ends of the two auxiliary pipelines are connected with a monitoring pipe, the other end of the monitoring pipe is connected with a water return pipe, a conductivity meter is arranged on the monitoring pipe, and valves are respectively arranged on the two auxiliary pipelines.
And furthermore, a remote transmission liquid level meter is arranged on the mechanical seal water storage tank, and the conductivity meter, the remote transmission liquid level meter and the mechanical seal water delivery pump are all connected with a background controller.
The utility model has the advantages that:
the utility model discloses a urea ammonia pump machine seals water recycle system, collect the machine with urea ammonia pump machine seals water and seal water storage tank, the machine that the machine in the machine seals the water storage tank seals water and is carried to the flue gas desulfurization tower moisturizing point by the machine transport pump that seals, the water and the ammonia of machine seal water are as the flue gas desulfurization raw materials, flue gas desulfurization liquid ammonia consumption has been reduced, and the water resource has also obtained make full use of, the cost of urea device hydrolysis, desorption system treatment waste water has been reduced simultaneously, steam consumption has been reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the specification which follows.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, wherein:
fig. 1 is a schematic structural view of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.
As shown in figure 1, the urea ammonia pump machine seal water recycling system comprises a closed machine seal water storage tank 2 and a machine seal water delivery pump 3, wherein the machine seal water storage tank 2 is connected with an ammonia pump machine seal water outlet through a valve and a pipeline, the inlet side of the machine seal water delivery pump 3 is connected with the machine seal water storage tank 2 through a pipeline, and the outlet side of the machine seal water delivery pump is connected with a flue gas desulfurization tower water replenishing point through a pipeline.
An overflow port is arranged at the upper part of the side surface of the mechanical seal water storage tank 2, an overflow pipe is connected to the overflow port, the lower end of the overflow pipe is arranged below the liquid level of the gas ammonia absorption solution in the water seal device 4, and the preferred gas ammonia absorption solution is absorption water.
The water seal device 4 is provided with a gas ammonia absorption solution adding port, and the bottom of the water seal device 4 is provided with a discharge port capable of discharging the mixed solution into a trench.
The upper part of the side surface of the water sealing device 4 is provided with an overflow outlet which can discharge the mixed solution into a trench.
The mechanical seal water entering the mechanical seal water storage tank 2 has the advantages that in order to prevent the storage tank from generating safety risk due to liquid fullness, the side edge of the top of the mechanical seal water storage tank 2 is provided with an overflow pipe, the lower end of the overflow pipe is arranged below the liquid level of ammonia absorption solution in the water seal device 4, and once overflow occurs, the overflow water is discharged into a trench through the water seal device to be recovered. The outlet of the overflow pipe is immersed below the liquid level of the water seal device 4, and after overflow occurs, only the overflow water overflows the overflow outlet arranged on the side edge of the upper part of the water seal device 4 and can be discharged, and the overflow water is discharged to a trench for recycling. The water seal device 4 is internally filled with absorption water with enough depth to submerge the outlet of the overflow pipe, so that air is blocked from entering the mechanical water seal storage tank 2 to generate safety risk, and meanwhile, the absorption water absorbs gas ammonia escaping from the overflow pipe, and the gas ammonia is prevented from entering the ambient atmosphere. The absorbed water needs to be replaced regularly, and the water seal is prevented from losing efficacy after saturation absorption. The replacement water is discharged from the discharge port to the trench for recovery.
The upper portion of the machine seal water storage tank 2 is provided with an exhaust pipe, the top end of the exhaust pipe is connected with the lower portion of an ammonia recovery device 5, the top of the ammonia recovery device 5 is open, an ammonia absorption liquid spraying structure is arranged on the upper portion in the ammonia recovery device 5, and the bottom of the ammonia recovery device 5 is connected with the machine seal water storage tank 2 through a liquid discharge pipe.
The machine seal water entering the machine seal water storage tank 2 is at a temperature of about 60 ℃, the carried ammonia is easy to volatilize, pressure can be generated on the tank body, an exhaust pipe needs to be arranged at the center of the top of the machine seal water storage tank 2 for ensuring that the equipment is in a normal pressure state, and the outlet of the exhaust pipe is connected with the ammonia gas recovery device 5. The ammonia gas recovery device 5 is arranged at a relatively high position near the machine seal water storage tank, the lower part of the ammonia gas recovery device is connected with the exhaust pipe at the center of the top of the machine seal water storage tank 2, the upper part of the ammonia gas recovery device is provided with a condensate pipeline and a spray head, injected normal-temperature condensate is used for absorbing a small amount of ammonia gas escaped from the exhaust pipe, and absorption liquid flows back to the machine seal water storage tank 2 from the bottom of the exhaust gas recovery device under the action of gravity.
A conductance meter 1 is arranged on a pipeline between the ammonia pump machine seal water outlet and the machine seal water storage tank 2, and the conductance meter 1 conducts conductance monitoring on the quality of water at the ammonia pump machine seal water outlet, so that whether the ammonia pump machine seal leaks or not and the ammonia leakage amount is judged, and measures are convenient to take.
The device comprises two ammonia pumps, one is an operating pump, the other is a standby pump, water sealing outlets of the two ammonia pumps are respectively connected with a water outlet pipe, the free ends of the water outlet pipes are connected with a main pipeline and an auxiliary pipeline, the other end of the main pipeline is connected with a recovery pipe, the other end of the recovery pipe is connected with a mechanical sealing water storage tank 2, valves are respectively arranged on the two main pipelines, the other ends of the two auxiliary pipelines are connected with a monitoring pipe, the other end of the monitoring pipe is connected with a water return pipe, a conductivity meter 1 is arranged on the monitoring pipe, valves are respectively arranged on the two auxiliary pipelines, the conductivity meter 1 is a common instrument for monitoring water quality conductivity of the water sealing outlets of the two ammonia pumps, is arranged between two control valves of the mechanical sealing water outlets of the ammonia pumps and is used for measuring the conductivity value of mechanical sealing water, and further judging whether the mechanical sealing of the ammonia pumps leaks and the quantity of ammonia, and is convenient for taking measures to switch the operating pump so as to maintain. In operation control, only the water outlet conductance of the sealing water of the running pump is measured by switching the valve, the mechanical seal of the standby pump has no leakage and does not need to measure the conductance value, and the sealing water is directly discharged into the mechanical seal water storage tank 2 from the main line. The specific operation is as follows: when the ammonia pump A operates, the ammonia pump B is standby, the main pipeline valve of the machine seal water outlet of the ammonia pump A is closed, the auxiliary pipeline valve is opened, machine seal water flows from the auxiliary pipeline through the conductivity meter 1 to be discharged into the machine seal water storage tank 2 after measuring the water quality conductivity, at the moment, the auxiliary pipeline valve of the machine seal water outlet of the ammonia pump B is closed, the main pipeline valve is opened, and the machine seal water is directly discharged into the machine seal water storage tank 2 from the main pipeline. When the measured conductance value abnormally rises, the sealing leakage of the ammonia pump A is large, the ammonia pump A needs to be switched to the ammonia pump B to operate, the ammonia pump A is reserved after being overhauled, and the operation control conditions are opposite.
The mechanical seal water storage tank 2 is provided with a field and remote transmission liquid level meter for measuring the liquid level of the solution in the mechanical seal water storage tank, and the conductivity meter 1, the remote transmission liquid level meter and the mechanical seal water delivery pump 3 are all connected with the background controller.
All equipment and pipelines of the system are made of stainless steel materials. The water seal device 4 and the ammonia gas recovery device 5 are both made of cylinders with the diameter of about 600mm, the water seal device 4 is a closed normal-pressure container, and an overflow port arranged on the side edge of the upper part is communicated with the atmosphere. The ammonia recovery device 5 is a semi-closed normal pressure container, and the upper end of the container is open and communicated with the atmosphere.
This system has set up the machine and has sealed water to collect and store and carry two units of use, according to the height of 2 liquid levels in the machine sealed water storage tank, reasonable control flue gas desulphurization unit machine seals the water use amount, can continuous use or intermittent type nature use.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (8)
1. Urea ammonia pump machine seals water recycle system, its characterized in that: the device comprises a closed machine seal water storage tank (2) and a machine seal water delivery pump (3), wherein the machine seal water storage tank (2) is connected with a machine seal water outlet of an ammonia pump through a valve and a pipeline, the inlet side of the machine seal water delivery pump (3) is connected with the machine seal water storage tank (2) through a pipeline, and the outlet side of the machine seal water delivery pump is connected with a water replenishing point of a flue gas desulfurization tower through a pipeline.
2. The urea ammonia pump seal water recycling system of claim 1, characterized in that: an overflow port is arranged at the upper part of the side surface of the mechanical seal water storage tank (2), an overflow pipe is connected to the overflow port, and the lower end of the overflow pipe is arranged below the liquid level of ammonia gas absorption solution in the water seal device (4).
3. The urea ammonia pump machine seal water recycling system of claim 2, characterized in that: the water seal device (4) is provided with a gas ammonia absorption solution adding port, and the bottom of the water seal device (4) is provided with a discharge port capable of discharging the mixed solution into a trench.
4. The urea ammonia pump machine seal water recycling system of claim 2, characterized in that: and the upper part of the side surface of the water seal device (4) is provided with an overflow outlet which can discharge the mixed solution into a trench.
5. The urea ammonia pump machine seal water recycling system of claim 1, characterized in that: the machine sealing water storage tank (2) upper portion is equipped with the blast pipe, the blast pipe top links to each other with an ammonia recovery unit (5) lower part, ammonia recovery unit (5) open-top, upper portion is equipped with ammonia absorption liquid spray structure in the ammonia recovery unit (5), ammonia recovery unit (5) bottom is passed through the fluid-discharge tube and is linked to each other with machine sealing water storage tank (2).
6. The urea ammonia pump water seal recycling system according to any one of claims 1 to 5, characterized in that: and a conductivity meter (1) is arranged on a pipeline between the mechanical seal water outlet of the ammonia pump and the mechanical seal water storage tank (2).
7. The urea ammonia pump water seal recycling system according to any one of claims 1 to 5, characterized in that: the ammonia pump is two, and two ammonia pump machine seal water outlet are connected the outlet pipe respectively, and the outlet pipe free end is connected with main line and secondary line, and the main line other end is connected with the recovery tube, and the quick-witted water storage tank (2) of recovery tube other end connection, are equipped with the valve on two main lines respectively, and two secondary line other ends link to each other with the monitoring pipe, and the monitoring pipe other end links to each other with the wet return, be equipped with conductivity meter (1) on the monitoring pipe, be equipped with the valve on two secondary lines respectively.
8. The urea ammonia pump seal water recycling system of claim 7, characterized in that: and a remote transmission liquid level meter is arranged on the mechanical seal water storage tank (2), and the conductivity meter (1), the remote transmission liquid level meter and the mechanical seal water delivery pump (3) are all connected with a background controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221269652.1U CN217602897U (en) | 2022-05-25 | 2022-05-25 | Urea ammonia pump machine seals water recycle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221269652.1U CN217602897U (en) | 2022-05-25 | 2022-05-25 | Urea ammonia pump machine seals water recycle system |
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| Publication Number | Publication Date |
|---|---|
| CN217602897U true CN217602897U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221269652.1U Active CN217602897U (en) | 2022-05-25 | 2022-05-25 | Urea ammonia pump machine seals water recycle system |
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| CN (1) | CN217602897U (en) |
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- 2022-05-25 CN CN202221269652.1U patent/CN217602897U/en active Active
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