CN204714541U - A kind of single tower negative pressure ammonia evaporation system - Google Patents
A kind of single tower negative pressure ammonia evaporation system Download PDFInfo
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- CN204714541U CN204714541U CN201520232842.XU CN201520232842U CN204714541U CN 204714541 U CN204714541 U CN 204714541U CN 201520232842 U CN201520232842 U CN 201520232842U CN 204714541 U CN204714541 U CN 204714541U
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Abstract
The utility model discloses a kind of single tower negative pressure ammonia evaporation system, belong to ammonia-containing water process field, mainly solve existing ammonia still process Distallation systm high energy consumption problem.The utility model comprises wastewater disposal basin, fresh feed pump, preheater, condenser, ammonia still, interchanger, vacuum pump, absorption tower, recycle pump; Ammonia-containing water in the utility model and ammonia still tower top carry out twice heat exchange containing ammonia steam and the water outlet at the bottom of tower after enter ammonia still, tower top gets back to wastewater disposal basin containing ammonia steam condensate, the ammonia be not condensed is sent into absorption tower by vacuum pump, and dilute sulphuric acid is reacted into ammonium sulfate; Ammonia still works under negative pressure, and ammonia still does not establish enriching section, not backflow, thus significantly reduces steam consumption.
Description
Technical field
The utility model relates to ammonia-containing water process field, is specifically related to a kind of single tower negative pressure ammonia evaporation system.
Background technology
A large amount of ammonia-containing water can be produced in the industry production such as chemical industry, fermentation process, if these ammonia-containing waters directly discharge, aqueous bio mortality can be made, the ecosystem be produced and has a strong impact on; In addition, country carries out energy-saving and emission-reduction policy energetically, and will to reduce in waste water ammonia-nitrogen content and reduce discharging one of index as " 12 ".How efficient, economic in reduction waste water, the content of ammonia nitrogen, is the focal point of thinking of enterprise and investigator instantly.
At present, ammonia reclaiming process mainly contains air stripping and ammonia still process.Tradition ammonia still process fado adopts tower distil process, direct or indirect use steam heating is carried out deamination and reclaims weak ammonia, in order to improve weak ammonia concentration, ammonia still top needs to arrange reflux section, improve ammonia concn by vast scale backflow is concentrated, because all heating all derive from steam, steam consumption is large, and the larger steam consumption of reflux ratio is larger, waste water deaminizing cost is caused to increase.
Utility model content
The purpose of this utility model is to provide a kind of single tower negative pressure ammonia evaporation system, to solve in existing waste water deaminizing technique the high steam consumption problem existed.
In order to achieve the above object, the technical solution adopted in the utility model is:
A kind of single tower negative pressure ammonia evaporation system, is characterized in that: comprise wastewater disposal basin 1, fresh feed pump 2, preheater 3, condenser 4, ammonia still 5, interchanger 6, vacuum pump 7, absorption tower 8, recycle pump 9; Waste water in described wastewater disposal basin 1 is connected with fresh feed pump 2 by the first pipeline 10, fresh feed pump 2 is connected with preheater 3 tube side by second pipe 11, preheater 3 tube side is connected with interchanger 6 shell side by the 3rd pipeline 12, interchanger 6 shell side is connected with ammonia still 5 by the 4th pipeline 13, bottom described ammonia still 5 and top is respectively equipped with without ammonia waste water outlet with containing ammonia steam outlet, described outlet without ammonia waste water is connected with interchanger 6 tube side by the 5th pipeline 22, described interchanger 6 tube side is connected with the 6th pipeline 23, completes the discharge without ammonia waste water; The described ammonia steam outlet that contains is connected with preheater 3 shell side by the 7th pipeline 14, and described preheater 3 shell side is connected with condenser 4 shell side by the 8th pipeline 15, and described preheater 3 shell side and condenser 4 shell side are respectively equipped with water of condensation delivery port; Described water of condensation delivery port is connected with wastewater disposal basin by the 9th pipeline 16, completes the Gui Chi of water of condensation; Described condenser 4 is also connected with vacuum pump 7 by the tenth pipeline 17, and described vacuum pump 7 is connected with absorption tower 8 by the 11 pipeline 18, and absorption tower 8 is connected with recycle pump 9 by the 12 pipeline 19, completes the process of uncondensed vapor.
Described preheater 3 one, preheater 3 tube side there are an ammonia-containing water input aperture and an ammonia-containing water delivery port, be used for respectively connecting second pipe 11 and the 3rd pipeline 12, described preheater 3 shell side be provided with one containing ammonia vapor inlet port, one containing ammonia steam outlet and a water of condensation delivery port, be used for connection the 7th pipeline 14, the 8th pipeline 15, the 9th pipeline 16 respectively.
6 one, described interchanger, interchanger 6 tube side there is one without ammonia waste water input aperture and one without ammonia waste water delivery port, be used for connection the 5th pipeline 22 and the 6th pipeline 23 respectively, the shell side of described interchanger 6 is provided with an ammonia-containing water input aperture and an ammonia-containing water delivery port, is used for connection the 3rd pipeline 12 and the 4th pipeline 13 respectively.
Described ammonia still 5 one, adopt tray column, ammonia still top-side has an ammonia-containing water import, is used for connection the 4th pipeline 13; Described tower bottom side is also provided with a steam input pipe road.
Being connected with preheater 3 shell side by the 7th pipeline 14 containing ammonia vapour outlet of described ammonia still 5 top, the ammonia-containing water be sent in preheater 3 tube side containing ammonia steam and fresh feed pump 2 realized in preheater 3 shell side carries out heat exchange.
Being connected with interchanger 6 tube side by the 5th pipeline 22 without ammonia waste water outlet bottom described ammonia still 5, realize carrying out heat exchange without ammonia waste water in ammonia-containing water in interchanger 6 shell side and interchanger 6 tube side.
Described condenser 4 one, condenser 4 tube side has a recirculated water input aperture and a recirculated water delivery port, is used for respectively connecting circulating water inlet road 24 and circulating water outlet pipe road 25; Condenser 7 shell side there is one containing ammonia vapor inlet port, an ammonia delivery port and a water of condensation delivery port, be used for connection the 8th pipeline 15, the tenth pipeline 17, the 9th pipeline 16 respectively.
8 one, described absorption tower, absorption tower 8 is two sections of packing towers, and bottom sides has an ammonia input aperture, is communicated with the 11 pipeline 18; The emptying use of tail gas delivery port is arranged at top; A dilute sulphuric acid input aperture is provided with at the bottom of the tower of described absorption tower 8, also be connected with recycle pump 9 by the 12 pipeline 19 at the bottom of the tower of described absorption tower 8, recycle pump 9 is connected with each dilute sulphuric acid circulation input aperture at tower body top and middle part by the 13 pipeline 20, described recycle pump 9 outlet is provided with branch road 21, completes the process of uncooled ammonia.
The beneficial effects of the utility model are:
(1) by the two-stage preheating of preheater, interchanger, the maximum recycling of heat is achieved;
(2) adopt the mode of negative pressure ammonia still process, reduce distillation temperature, reduce the requirement to vapor pressure;
(3) ammonia still does not establish enriching section, and ammonia still process process, without backflow, decreases the consumption of steam, reduces deamination cost.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model.
(1, wastewater disposal basin, 2, fresh feed pump, 3, preheater, 4, condenser, 5, ammonia still, 6, interchanger, 7, vacuum pump, 8, absorption tower, 9, recycle pump, 10, the first pipeline, 11, second pipe, the 12, the 3rd pipeline, 13, the 4th pipeline, the 14, the 7th pipeline, the 15, the 8th pipeline, 16, the 9th pipeline, 17, the tenth pipeline, the 18, the 11 pipeline, the 19, the 12 pipeline, 20, the 13 pipeline, 21, branch road is exported, the 22, the 5th pipeline, the 23, the 6th pipeline, 24, circulating water inlet road, 25, circulating water outlet pipe road).
Embodiment
As shown in Figure 1, a kind of single tower negative pressure ammonia evaporation system, comprises wastewater disposal basin 1, fresh feed pump 2, preheater 3, condenser 4, ammonia still 5, interchanger 6, vacuum pump 7, absorption tower 8, recycle pump 9, first pipeline 10, second pipe 11, the 3rd pipeline 12, the 4th pipeline 13, the 7th pipeline 14, the 8th pipeline 15, the 9th pipeline 16, the tenth pipeline the 17, the 11 pipeline the 18, the 12 pipeline the 19, the 13 pipeline 20, outlet branch road 21, the 5th pipeline 22, the 6th pipeline 23, circulating water inlet road 24, circulating water outlet pipe road 25.
Wastewater disposal basin 1 is communicated with fresh feed pump 2 by the first pipeline 10, fresh feed pump 2 is communicated with the tube side of preheater 3 by second pipe 11, the tube side of preheater 3 is communicated with the shell side of interchanger 6 by the 3rd pipeline 12 again, the shell side of interchanger 6 is communicated with ammonia still 5 top-side by the 4th pipeline 13 again, ammonia-containing water in described wastewater disposal basin 1 after the first pipeline 10, fresh feed pump 2, second pipe 11, preheater 3, the 3rd pipeline 12, interchanger 6, the 4th pipeline 13, enters ammonia still 5 from deammoniation tower 5 top-side successively; The ammonia-containing water entering ammonia still 5 flows from top to bottom along column plate, the water vapor entered from bottom steam input channel flows from the bottom up along column plate, ammonia-containing water and water vapor carry out conducting heat, mass transfer, and the ammonia nitrogen in waste water is removed, and are formed without ammonia waste water and contain the two bursts of logistics of ammonia steam.Enter the tube side of interchanger 6 without ammonia waste water the 5th pipeline 22 at the bottom of deammoniation tower 5 tower after removal of ammonia and nitrogen, discharge from the 6th pipeline 23 after heat exchange cooling, complete the deamination process of waste water.
Then discharging from tower top containing ammonia vapour outlet containing ammonia steam in ammonia still 5, enters the shell side of preheater 3 through the 7th pipeline 14.The shell side of preheater 3 is communicated with the shell side of condenser 4 by the 8th pipeline 15 again, the shell side of preheater 3 is also communicated with wastewater disposal basin 1 by the 9th pipeline 16, the shell side of condenser 4 is also communicated with wastewater disposal basin 1 by the 9th pipeline 16, described from ammonia still 5 containing ammonia steam successively through the 7th pipeline 14, preheater 3, the 8th pipeline 15 and condenser 4, get back in wastewater disposal basin 1 through the 9th pipeline 16 after steam is condensed, complete the Gui Chi of water of condensation.
The shell side of described condenser 4 is also communicated with vacuum pump 7 by the tenth pipeline 17, true air pump 7 is connected with bottom absorption tower 8 by the 11 pipeline 18 again, the ammonia be not condensed in condenser 4 enters absorption tower 8 through the tenth pipeline 17, vacuum pump the 7, the 11 pipeline 18, and flows to tower top at the bottom of self-absorption tower 8 tower successively; Be communicated with recycle pump 9 by the 12 pipeline 19 bottom absorption tower 8, the outlet of recycle pump 9 is communicated with by the top on the 13 pipeline 20 and absorption tower 8 and middle part, dilute sulphuric acid bottom absorption tower 8 returns to absorption tower 8 through piping 19, recycle pump 9, pipeline 20 from the top on absorption tower 8 and middle part successively, be sprayed on filler, dilute sulphuric acid moves downward along filler, absorbs ammonia and forms ammonium sulfate.Do not discharged from top, absorption tower tail gas delivery port by the tail gas that dilute sulphuric acid absorbs; Dilute sulphuric acid continues cyclic absorption ammonia, when dilute sulphuric acid is saturated become ammoniumsulphate soln after the branch road 21 that exports through recycle pump 9 discharge, complete the process of uncooled ammonia.
Principle of work of the present utility model:
A kind of single tower negative pressure ammonia evaporation system, first wastewater disposal basin is entered by the ammonia-containing water that out-of-bounds device is sent here, after adding alkali adjustment pH to alkalescence, heat exchange is carried out with the ammonia steam that contains that fresh feed pump is sent into from ammonia still in preheater tube side and preheater shell side, enter again heat exchanger shell pass with leave ammonia still without ammonia waste water heat exchange, finally enter first block, ammonia still top column plate, the steam entered with bottom forms convection current, ammonia is almost all deviate from, the shell side escaping and enter preheater containing ammonia steam from ammonia still top produced, then at the bottom of ammonia still tower, heat exchanger tube pass is escaped and enter without ammonia waste water, what enter preheater shell side carries out heat exchange, condensation containing ammonia steam and the ammonia-containing water entering preheater tube side, ammonia-containing water temperature rises, and decline and partial condensation containing ammonia vapor temperature, realize recycle heat, the steam condensate of condensation gets back to wastewater disposal basin, and the uncooled ammonia steam that contains then enters condenser shell side, what enter condenser shell side contains ammonia steam by the circulating water of being back to back in tube side, and water of condensation gets back to wastewater disposal basin, and incoagulable ammonia enters vacuum pump by pipeline, then enters absorption tower, be added with dilute sulphuric acid bottom absorption tower, and be sprayed on filler by recycle pump and pipeline, enter that the ammonia on absorption tower is reverse with dilute sulphuric acid to be contacted from bottom to top, ammonia is absorbed by dilute sulphuric acid and forms ammonium sulfate and discharge, and nonabsorbable tail gas is discharged by absorption tower tower top.
Although the utility model with preferred embodiment openly as above; but it is also not used to limit the utility model; any person skilled in the art; not departing from spirit and scope of the present utility model; all can do various changes and modification, what therefore protection domain of the present utility model should define with claims is as the criterion.
Claims (8)
1. a single tower negative pressure ammonia evaporation system, is characterized in that: comprise wastewater disposal basin (1), fresh feed pump (2), preheater (3), condenser (4), ammonia still (5), interchanger (6), vacuum pump (7), absorption tower (8), recycle pump (9), waste water in described wastewater disposal basin (1) is connected with fresh feed pump (2) by the first pipeline (10), fresh feed pump (2) is connected with preheater (3) tube side by second pipe (11), preheater (3) tube side is connected with interchanger (6) shell side by the 3rd pipeline (12), interchanger (6) shell side is connected with ammonia still (5) by the 4th pipeline (13), described ammonia still (5) bottom and top are respectively equipped with without ammonia waste water outlet with containing ammonia steam outlet, described outlet without ammonia waste water is connected with interchanger (6) tube side by the 5th pipeline (22), interchanger (6) tube side is connected with the 6th pipeline (23), complete the discharge without ammonia waste water, the described ammonia steam outlet that contains is connected with preheater (3) shell side by the 7th pipeline (14), described preheater (3) shell side is connected with condenser (4) shell side by the 8th pipeline (15), and described preheater (3) shell side and condenser (4) shell side are respectively equipped with water of condensation delivery port, water of condensation delivery port is connected with wastewater disposal basin by the 9th pipeline (16), completes the Gui Chi of water of condensation, described condenser (4) is also connected with vacuum pump (7) by the tenth pipeline (17), described vacuum pump (7) is connected with absorption tower (8) by the 11 pipeline (18), absorption tower (8) is connected with recycle pump (9) by the 12 pipeline (19), completes the process of uncondensed vapor.
2. the single tower negative pressure ammonia evaporation system of one according to claim 1, be characterised in that, described preheater (3) one, preheater (3) tube side there are an ammonia-containing water input aperture and an ammonia-containing water delivery port, be used for respectively connecting second pipe (11) and the 3rd pipeline (12), described preheater (3) shell side be provided with one containing ammonia vapor inlet port, one containing ammonia steam outlet and a water of condensation delivery port, be used for connection the 7th pipeline (14), the 8th pipeline (15), the 9th pipeline (16) respectively.
3. the single tower negative pressure ammonia evaporation system of one according to claim 1, be characterised in that, (6) one, described interchanger, interchanger (6) tube side there is one without ammonia waste water input aperture and one without ammonia waste water delivery port, be used for connection the 5th pipeline (22) and the 6th pipeline (23) respectively, the shell side of described interchanger (6) is provided with an ammonia-containing water input aperture and an ammonia-containing water delivery port, is used for connection the 3rd pipeline (12) and the 4th pipeline (13) respectively.
4. the single tower negative pressure ammonia evaporation system of one according to claim 1, is characterised in that, described ammonia still (5), and adopt tray column, ammonia still top-side has an ammonia-containing water import, is used for connection the 4th pipeline (13); Described tower bottom side is also provided with a steam input pipe road.
5. the single tower negative pressure ammonia evaporation system of one according to claim 1, be characterised in that, being connected with preheater (3) shell side by the 7th pipeline (14) containing ammonia vapour outlet of described ammonia still (5) top, the ammonia-containing water that ammonia steam and fresh feed pump (2) be sent in preheater (3) tube side that contains realized in preheater (3) shell side carries out heat exchange.
6. the single tower negative pressure ammonia evaporation system of one according to claim 1, be characterised in that, exporting without ammonia waste water of described ammonia still (5) bottom being connected with interchanger (6) tube side by the 5th pipeline (22), realizes carrying out heat exchange without ammonia waste water in ammonia-containing water in interchanger (6) shell side and interchanger (6) tube side.
7. the single tower negative pressure ammonia evaporation system of one according to claim 1, be characterised in that, described condenser (4) one, condenser (4) tube side there are a recirculated water input aperture and a recirculated water delivery port, are used for respectively connecting circulating water inlet road (24) and circulating water outlet pipe road (25); Condenser (4) shell side there is one containing ammonia vapor inlet port, an ammonia delivery port and a water of condensation delivery port, be used for connection the 8th pipeline (15), the tenth pipeline (17), the 9th pipeline (16) respectively.
8. the single tower negative pressure ammonia evaporation system of one according to claim 1, be characterised in that, (8) one, described absorption tower, absorption tower (8) are two sections of packing towers, bottom sides has an ammonia input aperture, is communicated with the 11 pipeline (18); The emptying use of tail gas delivery port is arranged at top; A dilute sulphuric acid input aperture is provided with at the bottom of described absorption tower (8) tower, also be connected with recycle pump (9) by the 12 pipeline (19) at the bottom of absorption tower (8) tower, recycle pump (9) is connected by the 13 pipeline (20) each dilute sulphuric acid circulation input aperture with tower body top and middle part, described recycle pump (9) outlet is provided with branch road (21), completes the process of uncooled ammonia.
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| CN201520232842.XU CN204714541U (en) | 2015-04-16 | 2015-04-16 | A kind of single tower negative pressure ammonia evaporation system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692654A (en) * | 2016-03-17 | 2016-06-22 | 山东钢铁股份有限公司 | Method and system for producing ammonium sulfate through gas deamination |
| CN106365383A (en) * | 2016-11-15 | 2017-02-01 | 南昌大学 | Method for absorbing and recovering ammonia in high-ammonia nitrogen waste water after anaerobic digestion through vacuum low-temperature acid |
| CN106673012A (en) * | 2016-11-11 | 2017-05-17 | 中冶焦耐(大连)工程技术有限公司 | Process and device for producing strong ammonia water through negative pressure operation |
| CN106745062A (en) * | 2017-01-23 | 2017-05-31 | 中冶焦耐(大连)工程技术有限公司 | The technique and device of a kind of negative-pressure operation production concentrated ammonia liquor |
| CN109987669A (en) * | 2019-05-15 | 2019-07-09 | 济南冶金化工设备有限公司 | Ammonia steaming system and ammonia distillation process |
| CN111111386A (en) * | 2020-02-25 | 2020-05-08 | 韶关凯鸿纳米材料有限公司 | Ammonia distillation and ammonia absorption dual-purpose heat exchange system and use method thereof |
| CN112551793A (en) * | 2020-12-10 | 2021-03-26 | 天津大学 | Ammonia distillation method and device for ammonia-containing wastewater |
| CN115286162A (en) * | 2022-08-22 | 2022-11-04 | 吴嘉 | Device and method for treating ammonia nitrogen wastewater easy to scale and recycling ammonia |
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2015
- 2015-04-16 CN CN201520232842.XU patent/CN204714541U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692654A (en) * | 2016-03-17 | 2016-06-22 | 山东钢铁股份有限公司 | Method and system for producing ammonium sulfate through gas deamination |
| CN106673012A (en) * | 2016-11-11 | 2017-05-17 | 中冶焦耐(大连)工程技术有限公司 | Process and device for producing strong ammonia water through negative pressure operation |
| CN106673012B (en) * | 2016-11-11 | 2019-07-26 | 中冶焦耐(大连)工程技术有限公司 | A kind of technique and device of negative-pressure operation production concentrated ammonia liquor |
| CN106365383A (en) * | 2016-11-15 | 2017-02-01 | 南昌大学 | Method for absorbing and recovering ammonia in high-ammonia nitrogen waste water after anaerobic digestion through vacuum low-temperature acid |
| CN106745062A (en) * | 2017-01-23 | 2017-05-31 | 中冶焦耐(大连)工程技术有限公司 | The technique and device of a kind of negative-pressure operation production concentrated ammonia liquor |
| CN106745062B (en) * | 2017-01-23 | 2019-11-15 | 中冶焦耐(大连)工程技术有限公司 | A kind of technique and device of negative-pressure operation production concentrated ammonia liquor |
| CN109987669A (en) * | 2019-05-15 | 2019-07-09 | 济南冶金化工设备有限公司 | Ammonia steaming system and ammonia distillation process |
| CN111111386A (en) * | 2020-02-25 | 2020-05-08 | 韶关凯鸿纳米材料有限公司 | Ammonia distillation and ammonia absorption dual-purpose heat exchange system and use method thereof |
| CN112551793A (en) * | 2020-12-10 | 2021-03-26 | 天津大学 | Ammonia distillation method and device for ammonia-containing wastewater |
| CN115286162A (en) * | 2022-08-22 | 2022-11-04 | 吴嘉 | Device and method for treating ammonia nitrogen wastewater easy to scale and recycling ammonia |
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