CN210457559U - Recovery device for residual ammonia in ammonia production oil-water mixed waste liquid - Google Patents
Recovery device for residual ammonia in ammonia production oil-water mixed waste liquid Download PDFInfo
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- CN210457559U CN210457559U CN201921280893.4U CN201921280893U CN210457559U CN 210457559 U CN210457559 U CN 210457559U CN 201921280893 U CN201921280893 U CN 201921280893U CN 210457559 U CN210457559 U CN 210457559U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The utility model provides a recovery unit of remaining ammonia in mixed waste liquid of ammonia-making oil water, including first evaporation tank, second evaporation tank, hot water boiler and spray the absorption tower, utilize the hot water in the hot water boiler to heat for the second evaporating pot earlier, heat for first evaporating pot again for the temperature in the first evaporating pot is less than the second evaporating pot. The ammonia-containing oil-water mixed liquid passes through the first evaporating pot and the second evaporating pot successively, the ammonia is heated from low to high temperature, the heated ammonia is completely volatilized, the residual oil-water mixed liquid is treated as waste liquid, ammonia gas in the evaporating pot is conveyed to the spray absorption tower and is absorbed to form ammonia water, and the induced draft fan provides a micro negative pressure environment for the evaporating pot, so that the ammonia is volatilized and discharged quickly. The device realizes the stable evaporation of ammonia recovery in the waste liquid through two-step heating, so that the ammonia is completely recovered, the volatilization of impurity components can be controlled, and potential safety hazards such as bumping and the like are prevented. In addition, the device has the advantages of energy conservation, automation of temperature control and the like.
Description
Technical Field
The utility model relates to an ammonia recovery technical field specifically relates to a recovery unit who remains ammonia in system ammonia oil-water mixed waste liquid.
Background
The oil-water mixed waste liquid is generated in the later stage of ammonia production, the waste liquid contains residual ammonia, and the residual ammonia in the mixed waste liquid needs to be recovered from the aspects of resource saving and environmental protection.
At present, the ammonia recovery in the waste liquid often has the following problems: 1. the recovery is not thorough; 2. residual impurity components in the recovered ammonia water are easy to explode and boil during evaporation, and potential safety hazards exist.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing a recovery unit who remains ammonia in system ammonia oil-water mixed waste liquid, through two steps of heating, realize the stable evaporation of ammonia recovery in the waste liquid, control impurity composition volatilizees and gets into, prevents potential safety hazards such as bumping.
The utility model provides a recovery unit of remaining ammonia in system ammonia oil water mixes waste liquid, including first evaporation irritate, the second evaporation irritate, boiler and spray the absorption tower, wherein:
the first evaporation tank is provided with a first waste liquid pipe, the first evaporation tank is connected with the second evaporation tank through a second waste liquid pipe, the bottom of the second evaporation tank is connected with a waste liquid barrel, and a first heating coil and a second heating coil are respectively arranged in the pipe walls of the first evaporation tank and the second evaporation tank;
the water outlet of the hot water boiler is connected with the water inlet of the second heating coil through a first hot water main pipe, a hot water pump is arranged on the first hot water main pipe, and the water outlet of the second heating coil is connected with the water inlet of the first heating coil through a second hot water main pipe;
the spraying absorption tower is connected with the ammonia gas outlets at the tops of the first evaporation tank and the second evaporation tank through ammonia gas pipelines, a draught fan is arranged on the ammonia gas pipelines, and an ammonia water collecting pipe is arranged at the lower part of the spraying absorption tower.
The utility model discloses a remain recovery unit of ammonia in system ammonia oil water mixes waste liquid sends the second heating coil of second evaporating pot earlier with the hot water in the hot-water boiler, sends the first heating coil of first evaporating pot again, utilizes the waste heat to heat first evaporating pot for the temperature in the first evaporating pot is less than the second evaporating pot. Conveying the oil-water mixed liquid containing ammonia to a first evaporation tank, heating at a lower temperature to volatilize part of ammonia, introducing the rest mixed liquid into a second evaporation tank, heating at a higher temperature, volatilizing all the heated amino, treating the rest oil-water mixed liquid as waste liquid, conveying the ammonia gas in the evaporation tank to a spray absorption tower, and absorbing to form ammonia water. The draught fan provides a micro negative pressure environment for the evaporating pot, so that ammonia is volatilized and discharged quickly. In order to prevent the overhigh temperature in the two evaporating tanks from causing the bumping and other components volatilization, the temperature in the two evaporating tanks is not higher than 90 ℃, and the temperature difference of the two evaporating tanks is not less than 15 ℃.
Preferably, a boiler water inlet pipe is arranged at the top of the hot water boiler, and a water outlet of the first heating coil is connected with the boiler water inlet pipe through a hot water circulating pipe. The water flowing out of the first heating coil is still hot water and directly returns to the boiler for circulation, so that energy can be saved.
Preferably, the top of the spray absorption tower is provided with a spray tower water inlet pipe, the bottom of the spray absorption tower is connected with a spray tower water inlet pipe through an ammonia water circulating pipe, and an ammonia water pump is arranged on the ammonia water circulating pipe. Through this structure, realize that the shower water circulation absorbs the ammonia many times, can make the aqueous ammonia concentration that obtains higher.
Preferably, a hot water branch pipe is connected between the first hot water main pipe and the second hot water main pipe, the first hot water main pipe is provided with a first electromagnetic valve, and the hot water branch pipe is provided with a second electromagnetic valve. When the temperature of the second evaporation tank is higher, the first electromagnetic valve is closed to control water inlet, so that the temperature of the second evaporation tank is controlled; when the temperature of the first evaporation tank is lower, the second electromagnetic valve can be opened, hot water is supplemented for the first evaporation tank through the hot water branch pipe, and therefore the temperature of the first evaporation tank is increased.
Preferably, the system also comprises a temperature control system, the temperature control system comprises a controller, a first temperature probe and a second temperature probe, the first temperature probe and the second temperature probe are arranged in the first evaporation tank and the second evaporation tank, the signal input end of the controller is connected with the first temperature probe and the second temperature probe, and the signal output end of the controller is connected with the first electromagnetic valve, the second electromagnetic valve and an electric control switch of the hot water pump. The temperature in the two evaporating tanks is monitored in real time through the first temperature probe and the second temperature probe, signals are transmitted to the controller, the controller compares the signals with a set value, whether hot water needs to be supplied to the controller is judged according to a comparison result, and the first electromagnetic valve and the second electromagnetic valve are controlled to be opened and closed.
The utility model has the advantages that: the utility model discloses a remain recovery unit of ammonia in system ammonia oil water mixed waste liquid through two steps of heating, has realized the stable evaporation of ammonia recovery in the waste liquid for ammonia is retrieved thoroughly, and steerable impurity component volatilizees and gets into, prevents potential safety hazards such as bumping. In addition, the device has the advantages of energy conservation, automation of temperature control and the like.
Drawings
FIG. 1 is a schematic view of a recovery apparatus for residual ammonia in an oil-water mixed waste liquid from ammonia production in example 1;
fig. 2 is a schematic structural view of a recovery apparatus for residual ammonia in an ammonia-producing water-oil mixed waste liquid in example 2.
In the figure: the device comprises a first evaporation tank 1, a first waste liquid pipe 11, a first heating coil 12, a second evaporation tank 2, a second waste liquid pipe 21, a second heating coil 22, a waste liquid barrel 23, a hot water boiler 3, a first hot water main pipe 31, a second hot water main pipe 32, a hot water pump 33, a boiler water inlet pipe 34, a hot water circulating pipe 35, a hot water branch pipe 36, a first electromagnetic valve 37, a second electromagnetic valve 38, a spray absorption tower 4, an ammonia pipeline 41, an induced draft fan 42, an ammonia water collecting pipe 43, a spray tower water inlet pipe 44, an ammonia water circulating pipe 45, an ammonia water pump 46, a temperature control system 5, a controller 51, a first temperature probe 52 and a second temperature probe 53.
Detailed Description
Example 1:
as shown in fig. 1, a recovery unit for residual ammonia in ammonia-making oil-water mixed waste liquid comprises a first evaporation tank 1, a second evaporation tank 2, a hot water boiler 3 and a spray absorption tower 4, wherein:
the first evaporation tank 1 is provided with a first waste liquid pipe 11, the first evaporation tank 1 is connected with the second evaporation tank 2 through a second waste liquid pipe 21, the bottom of the second evaporation tank 2 is connected with a waste liquid barrel 23, and a first heating coil 12 and a second heating coil 22 are respectively arranged in the pipe walls of the first evaporation tank 1 and the second evaporation tank 2;
the delivery port of hot water boiler 3 is connected with the water inlet of second heating coil 22 through first hot water main pipe 31, is equipped with hot-water pump 33 on the first hot water main pipe 31, and the delivery port of second heating coil 22 is connected with the water inlet of first heating coil 12 through second hot water main pipe 32. The top of the hot water boiler 3 is provided with a boiler water inlet pipe 34, and the water outlet of the first heating coil 12 is connected with the boiler water inlet pipe 34 through a hot water circulating pipe 35. A hot water branch pipe 36 is connected between the first hot water main pipe 31 and the second hot water main pipe 32, a first electromagnetic valve 37 is provided on the first hot water main pipe 31, and a second electromagnetic valve 38 is provided on the hot water branch pipe 36.
The spray absorption tower 4 is connected with the ammonia gas outlets at the tops of the first evaporation tank 1 and the second evaporation tank 2 through an ammonia gas pipeline 41, an induced draft fan 42 is arranged on the ammonia gas pipeline 41, and an ammonia water collecting pipe 43 is arranged at the lower part of the spray absorption tower 4. The top of the spray absorption tower 4 is provided with a spray tower water inlet pipe 44, the bottom of the spray absorption tower 4 is connected with the spray tower water inlet pipe 44 through an ammonia water circulating pipe 45, and the ammonia water circulating pipe 45 is provided with an ammonia water pump 46.
Example 2:
as shown in fig. 2, a recovery unit of residual ammonia in mixed waste liquid of ammonia-making oil and water, includes first evaporation tank 1, second evaporation tank 2, hot water boiler 3, spray absorption tower 4 and temperature control system 5, wherein:
the first evaporation tank 1 is provided with a first waste liquid pipe 11, the first evaporation tank 1 is connected with the second evaporation tank 2 through a second waste liquid pipe 21, the bottom of the second evaporation tank 2 is connected with a waste liquid barrel 23, and a first heating coil 12 and a second heating coil 22 are respectively arranged in the pipe walls of the first evaporation tank 1 and the second evaporation tank 2;
the delivery port of hot water boiler 3 is connected with the water inlet of second heating coil 22 through first hot water main pipe 31, is equipped with hot-water pump 33 on the first hot water main pipe 31, and the delivery port of second heating coil 22 is connected with the water inlet of first heating coil 12 through second hot water main pipe 32. The top of the hot water boiler 3 is provided with a boiler water inlet pipe 34, and the water outlet of the first heating coil 12 is connected with the boiler water inlet pipe 34 through a hot water circulating pipe 35. A hot water branch pipe 36 is connected between the first hot water main pipe 31 and the second hot water main pipe 32, a first electromagnetic valve 37 is provided on the first hot water main pipe 31, and a second electromagnetic valve 38 is provided on the hot water branch pipe 36.
The spray absorption tower 4 is connected with the ammonia gas outlets at the tops of the first evaporation tank 1 and the second evaporation tank 2 through an ammonia gas pipeline 41, an induced draft fan 42 is arranged on the ammonia gas pipeline 41, and an ammonia water collecting pipe 43 is arranged at the lower part of the spray absorption tower 4. The top of the spray absorption tower 4 is provided with a spray tower water inlet pipe 44, the bottom of the spray absorption tower 4 is connected with the spray tower water inlet pipe 44 through an ammonia water circulating pipe 45, and the ammonia water circulating pipe 45 is provided with an ammonia water pump 46.
The temperature control system 5 comprises a controller 51, and a first temperature probe 52 and a second temperature probe 53 which are arranged in the first evaporation tank 1 and the second evaporation tank 2, wherein a signal input end of the controller 51 is connected with the first temperature probe 52 and the second temperature probe 53, and a signal output end of the controller 51 is connected with the first electromagnetic valve 37, the second electromagnetic valve 38 and an electric control switch of the hot water pump 33.
Claims (5)
1. The utility model provides a recovery unit of remaining ammonia in system ammonia oil water mixes waste liquid which characterized in that, irritates (2), hot-water boiler (3) and sprays absorption tower (4) including first evaporation, wherein:
a first waste liquid pipe (11) is arranged on the first evaporation tank (1), the first evaporation tank (1) is connected with the second evaporation tank (2) through a second waste liquid pipe (21), the bottom of the second evaporation tank (2) is connected with a waste liquid barrel (23), and a first heating coil (12) and a second heating coil (22) are respectively arranged in the pipe walls of the first evaporation tank (1) and the second evaporation tank (2);
the water outlet of the hot water boiler (3) is connected with the water inlet of the second heating coil (22) through a first hot water main pipe (31), a hot water pump (33) is arranged on the first hot water main pipe (31), and the water outlet of the second heating coil (22) is connected with the water inlet of the first heating coil (12) through a second hot water main pipe (32);
the spray absorption tower (4) is connected with the ammonia gas outlets at the tops of the first evaporation tank (1) and the second evaporation tank (2) through an ammonia gas pipeline (41), a draught fan (42) is arranged on the ammonia gas pipeline (41), and an ammonia water collecting pipe (43) is arranged on the lower portion of the spray absorption tower (4).
2. The apparatus for recovering residual ammonia from waste mixed liquor in ammonia production according to claim 1, wherein the boiler (3) is provided with a boiler inlet pipe (34) at the top, and the outlet of the first heating coil (12) is connected with the boiler inlet pipe (34) through a hot water circulating pipe (35).
3. The device for recovering the residual ammonia in the mixed waste liquid of oil and water for ammonia production as claimed in claim 1, wherein the top of the spray absorption tower (4) is provided with a spray tower inlet pipe (44), the bottom of the spray absorption tower (4) is connected with the spray tower inlet pipe (44) through an ammonia water circulating pipe (45), and the ammonia water pump (46) is arranged on the ammonia water circulating pipe (45).
4. The apparatus for recovering ammonia remaining in an ammonia-producing oil-water mixed waste liquid according to claim 1, wherein a hot water branch pipe (36) is connected between the first hot water main pipe (31) and the second hot water main pipe (32), a first electromagnetic valve (37) is provided in the first hot water main pipe (31), and a second electromagnetic valve (38) is provided in the hot water branch pipe (36).
5. The recycling device of the residual ammonia in the mixed waste liquid of ammonia-making oil and water according to claim 4, further comprising a temperature control system (5), wherein the temperature control system (5) comprises a controller (51) and a first temperature probe (52) and a second temperature probe (53) which are arranged in the first evaporation tank (1) and the second evaporation tank (2), a signal input end of the controller (51) is connected with the first temperature probe (52) and the second temperature probe (53), and a signal output end of the controller (51) is connected with the first electromagnetic valve (37), the second electromagnetic valve (38) and an electric control switch of the hot water pump (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921280893.4U CN210457559U (en) | 2019-08-08 | 2019-08-08 | Recovery device for residual ammonia in ammonia production oil-water mixed waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921280893.4U CN210457559U (en) | 2019-08-08 | 2019-08-08 | Recovery device for residual ammonia in ammonia production oil-water mixed waste liquid |
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| Publication Number | Publication Date |
|---|---|
| CN210457559U true CN210457559U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921280893.4U Active CN210457559U (en) | 2019-08-08 | 2019-08-08 | Recovery device for residual ammonia in ammonia production oil-water mixed waste liquid |
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| CN (1) | CN210457559U (en) |
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2019
- 2019-08-08 CN CN201921280893.4U patent/CN210457559U/en active Active
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