CN206476756U - A kind of negative-pressure operation produces the device of concentrated ammonia liquor - Google Patents
A kind of negative-pressure operation produces the device of concentrated ammonia liquor Download PDFInfo
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- CN206476756U CN206476756U CN201720085760.6U CN201720085760U CN206476756U CN 206476756 U CN206476756 U CN 206476756U CN 201720085760 U CN201720085760 U CN 201720085760U CN 206476756 U CN206476756 U CN 206476756U
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Abstract
The utility model is related to the device that a kind of negative-pressure operation produces concentrated ammonia liquor, including ammonia still, condenser, gas-liquid separator and the recovery ammonia tower being sequentially connected by pipeline；Ammonia vapor outlet connects gas-liquid separator by condenser at the top of ammonia still；The condensate outlet of gas-liquid separator connects the condensate inlet of recovery ammonia tower bottom of towe, and ammonia vapour and the fixed gas of gas-liquid separator export the ammonia vapour and fixed gas entrance for being connected recovery ammonia tower bottom of towe；The concentrated ammonia liquor outlet of recovery ammonia tower bottom of towe connects product concentrated ammonia liquor output channel and cyclic ammonia water pipeline respectively, and cyclic ammonia water pipeline is sequentially connected the ammonia spray device on cyclic ammonia water cooler and recovery ammonia tower top；Gas piping before the fixed gas outlet connection ammonia absorption plant or ammonia process oxidation sweetening device of recovery ammonia top of tower.The utility model produces negative pressure using dry vacuum pumping, and the vacuum of negative pressure ammonia evaporation system can be made to remain stable；Have the advantages that equipment investment is few, energy consumption is low, technological process is simple, non-environmental-pollution.
Description
Technical field
The utility model is related to coke chemicals recovery technology field, more particularly to a kind of use applied to coking industry is done
Formula vavuum pump realizes that negative-pressure operation produces the device of concentrated ammonia liquor.
Background technology
The remained ammonia distillation technique of coking industry is used for the ammonia in raw material ammonia water, hydrogen sulfide, carbon dioxide, hydrogen cyanide
Steamed Deng impurity, obtain the ammonia vapour or concentrated ammonia liquor of high concentration.
At present, residual coking ammonia water ammonia distillation process is divided into two kinds of techniques of malleation ammonia still process and negative pressure ammonia still process；Malleation ammonia distillation process
The ammonia vapour of middle tower top can be directly over cooling and obtain concentrated ammonia liquor.And the ammonia vapour that negative pressure ammonia distillation process tower top comes out can be sent out after cooling
First portion is condensed, and uncooled ammonia vapour and fixed gas produce negative pressure through vacuum pumping, result in there are in gas phase it is substantial amounts of
Ammonia, and the ammonia density in condensate liquid is relatively low, it is necessary to which the ammonia in gas, which reclaim, could obtain the ammoniacal liquor product of high concentration.
License notification number be CN 203307083 U, CN 203529966 the U and B of CN 102336415 China specially
In profit, one of refrigerating work procedure is only referred to for the ammonia vapour processing after negative pressure ammonia distillation process process dephlegmator.But the ammonia that tower top comes out
After the condensed cooling of vapour, the concentration for the ammoniacal liquor being condensed is relatively low, and the mass fraction of ammonia is not condensed down 6%~9%
Containing substantial amounts of ammonia (mass fraction is 30%~50%) in the fixed gas come, it accounts for the 40%~50% of total ammonia amount.Above-mentioned skill
Substantial amounts of ammonia is not recycled in ammonia solution in art scheme, therefore cannot get concentrated ammonia liquor product.
Authorization Notice No. is the U of CN 204365123 Chinese patent, discloses " a kind of that ammonia before vavuum pump is taken off
The negative pressure ammonia still process equipment of ammonia ", utilize the ammonia before sulfuric acid absorption liquid-ring vacuum pump, it is to avoid is sucked ammonia in gas to vacuum
The influence of pump, also can preferably maintain the vacuum of system.But contain substantial amounts of ammonia quilt in system after cooler in fixed gas
Sulfuric acid absorption formation ammonium sulfate products, and the ammonia concn for the ammonia formation being condensed is relatively low.
Authorization Notice No. is the U of CN 203768044 Chinese patent, is disclosed " a kind of device of negative pressure ammonia still process ", is used
Airless injection pumping fixed gas produces negative pressure, absorbs the ammonia in fixed gas in vacuum jet pump using cyclic ammonia water and is returned
Receipts obtain certain density ammoniacal liquor, but vacuum jet pump needs to circulate substantial amounts of ammoniacal liquor, and consuming more mechanical energy could obtain
Certain vacuum, and the reduced pressure that vacuum jet pump is produced is relatively limited, vacuum is not high so that the temperature of ammonia still bottom of towe
Degree is higher, which limits application of the negative pressure ammonia still process in terms of using low grade heat energy, is unfavorable for power-save operation.
The content of the invention
The utility model provides the device that a kind of negative-pressure operation produces concentrated ammonia liquor, is produced using dry vacuum pumping negative
Pressure, and the vacuum of negative pressure ammonia evaporation system can be made to remain stable；With equipment investment is few, energy consumption is low, technological process is simple,
Non-environmental-pollution, vacuum adjust unrestricted advantage.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of negative-pressure operation produces the device of concentrated ammonia liquor, including be sequentially connected by pipeline ammonia still, condenser, gas-liquid
Separator and recovery ammonia tower；The ammonia still is sequentially provided with wastewater outlet, recycling waste water outlet from bottom to top, recycling waste water enters
Mouth, NaOH solution entrance, remained ammonia entrance, wherein wastewater outlet connect efflux wastewater by waste water pump and gaseous effluent cooler
Pipeline；Recycling waste water is exported and recycling waste water entrance is connected by reboiler；At the top of ammonia still dephlegmator, ammonia are set before ammonia vapor outlet
Vapor outlet connects gas-liquid separator by condenser；The condensate outlet of gas-liquid separator connects the condensate liquid of recovery ammonia tower bottom of towe
Entrance, ammonia vapour and the fixed gas of gas-liquid separator export ammonia vapour and fixed gas that recovery ammonia tower bottom of towe is connected by dry vacuum pump
Entrance；The concentrated ammonia liquor outlet of recovery ammonia tower bottom of towe connects product concentrated ammonia liquor output channel and cyclic ammonia water respectively by concentrated ammonia liquor pump
Pipeline, cyclic ammonia water pipeline is sequentially connected the ammonia spray device on cyclic ammonia water cooler and recovery ammonia tower top；Recovery ammonia tower
Gas piping before the fixed gas outlet connection ammonia absorption plant or ammonia process oxidation sweetening device at top.
The dry vacuum pump is in Reciprocatory dry vavuum pump, dry type screw pump, dry type Roots vaccum pump, dry type pawl pump
One or more combination.
The recovery ammonia tower is material filling type, board-like or filler and the recovery ammonia tower of board-like combining form.
Compared with prior art, the beneficial effects of the utility model are：
1) the concentrated ammonia liquor mass concentration produced is 15%~25%, than existing negative pressure ammonia distillation process, obtained ammonia
Aquatic products concentration is improved；
2) negative pressure is produced using dry vacuum pumping, the ammonia vapour after being sucked can be avoided to condense out liquid in vavuum pump
Body, weakens corrosive nature of the medium in vavuum pump, reduces the requirement to vavuum pump material, reduce equipment investment, prolong
Service life of equipment is grown；
3) realize that negative-pressure operation produces concentrated ammonia liquor using dry vacuum pump, solve and use ejector vacuum pump in the prior art
When vacuum degree deficiency shortcoming, be more suitable for using low-grade heat source carry out ammonia still process operation, can further reduce ammonia steaming system
Energy consumption；
4) cyclic ammonia water through outside cooling is used to absorb the ammonia in dry vacuum pump discharge gas phase in recovery ammonia tower, no
Need separately to add absorbing medium, the concentrated ammonia liquor that bottom of towe comes out is product ammoniacal liquor, and the fixed gas containing a small amount of ammonia that tower top comes out enters
Enter the gas piping before ammonia absorption plant or ammonia process oxidation sweetening device, whole technical process is produced without waste gas, waste liquid, beneficial to ring
Protect.
Brief description of the drawings
Fig. 1 is the structural representation of the device of negative-pressure operation production concentrated ammonia liquor described in the utility model.
In figure：1. the gas of 6. condenser of ammonia still 2. reboiler, 3. waste water pump, 4. gaseous effluent cooler, 5. dephlegmator 7.
The cyclic ammonia water cooler of 10. concentrated ammonia liquor pump of liquid/gas separator 8. dry vacuum pump, 9. recovery ammonia tower 11..
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of negative-pressure operation described in the utility model produces the device of concentrated ammonia liquor, including by pipeline successively
Ammonia still 1, condenser 6, gas-liquid separator 7 and the recovery ammonia tower 9 of connection；The ammonia still 1 is sequentially provided with waste water from bottom to top
Outlet, recycling waste water outlet, recycling waste water entrance, NaOH solution entrance, remained ammonia entrance, wherein wastewater outlet pass through waste water
Pump 3 and the connection efflux wastewater pipeline of gaseous effluent cooler 4；Recycling waste water is exported and recycling waste water entrance is connected by reboiler 2；Steam
Dephlegmator 5 is set before the top ammonia vapor outlet of ammonia tower 1, ammonia vapor outlet connects gas-liquid separator 7 by condenser 6；Gas-liquid separator 7
The condensate inlet of the bottom of towe of condensate outlet connection recovery ammonia tower 9, ammonia vapour and the fixed gas outlet of gas-liquid separator 7 pass through dry type
The ammonia vapour and fixed gas entrance of the bottom of towe of the connection recovery ammonia of vavuum pump 8 tower 9；The concentrated ammonia liquor outlet of the bottom of towe of recovery ammonia tower 9 passes through dense ammonia
Water pump 10 connects product concentrated ammonia liquor output channel and cyclic ammonia water pipeline respectively, and it is cold that cyclic ammonia water pipeline is sequentially connected cyclic ammonia water
But device 11 and the ammonia spray device on the top of recovery ammonia tower 9；The fixed gas outlet connection ammonia absorption plant at the top of recovery ammonia tower 9 or
Gas piping before ammonia process oxidation sweetening device.
The dry vacuum pump 8 is in Reciprocatory dry vavuum pump, dry type screw pump, dry type Roots vaccum pump, dry type pawl pump
One or more kinds of combinations.
The recovery ammonia tower 9 is material filling type, board-like or filler and the recovery ammonia tower of board-like combining form.
A kind of technical process of the device of negative-pressure operation production concentrated ammonia liquor described in the utility model is as follows：
1) remained ammonia and NaOH solution deliver to the top of ammonia still 1, carry out ammonia still process operation；
2) the external reboiler 2 in the bottom of ammonia still 1, distilled ammonia wastewater gives heat in reboiler 2 through thermal source, and ammonia still process is returned to after heating
Vacuum flashing is carried out in tower 1, steam source is provided for ammonia still process operation；It is cold that bottom of towe waste water introduces gaseous effluent cooler 4 by waste water pump 3
But discharge afterwards；
3) the ammonia vapour come out through the tower top dephlegmator 5 of ammonia still 1 enters the cooling of condenser 6 and taken part of the condensate, condensed
Liquid-vapor mixture enters to be separated in vapour liquid separator 7；
4) condensate liquid after separating is directly discharged into the bottom of towe of recovery ammonia tower 9 by Action of Gravity Field, and uncooled ammonia vapour is not with coagulating
Gas carries out suction by dry vacuum pump 8 and produces negative pressure, and the vacuum of the ammonia still 1 of negative-pressure operation is kept stable；Taken out
The ammonia vapour of suction is discharged into the bottom of towe of recovery ammonia tower 9 after acting on increasing temperature and pressure through dry vacuum pump 8 with fixed gas；
5) concentrated ammonia liquor of the bottom of towe of recovery ammonia tower 9 is divided into two-way after being extracted out by concentrated ammonia liquor pump 10, is cooled down all the way through cyclic ammonia water
After device 11 cools, the ammonia in sprinkling absorption gas phase is carried out into the tower top of recovery ammonia tower 9；Another road as concentration be 15%~
25% product concentrated ammonia liquor output；
6) fixed gas containing a small amount of ammonia that the tower top of recovery ammonia tower 9 comes out is discharged into ammonia absorption plant or ammonia process oxidation sweetening dress
Gas piping before putting.
The vacuum of the ammonia still 1 is -87kPa~-70kPa.
The temperature of cyclic ammonia water after cooling through cyclic ammonia water cooler 11 is 20 DEG C~35 DEG C.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (3)
1. a kind of negative-pressure operation produces the device of concentrated ammonia liquor, it is characterised in that including the ammonia still, cold being sequentially connected by pipeline
Condenser, gas-liquid separator and recovery ammonia tower；The ammonia still is sequentially provided with wastewater outlet, recycling waste water outlet, followed from bottom to top
Ring waterwater entrance, NaOH solution entrance, remained ammonia entrance, wherein wastewater outlet connect outer by waste water pump and gaseous effluent cooler
Waste discharge waterpipe；Recycling waste water is exported and recycling waste water entrance is connected by reboiler；Set before ammonia vapor outlet at the top of ammonia still point
Contracting device, ammonia vapor outlet connects gas-liquid separator by condenser；The condensate outlet connection recovery ammonia tower bottom of towe of gas-liquid separator
Condensate inlet, the ammonia vapour of gas-liquid separator and fixed gas outlet are connected the ammonia vapour of recovery ammonia tower bottom of towe by dry vacuum pump
With fixed gas entrance；Recovery ammonia tower bottom of towe concentrated ammonia liquor outlet by concentrated ammonia liquor pump connect respectively product concentrated ammonia liquor output channel and
Cyclic ammonia water pipeline, cyclic ammonia water pipeline is sequentially connected the ammonia spray device on cyclic ammonia water cooler and recovery ammonia tower top；
Gas piping before the fixed gas outlet connection ammonia absorption plant or ammonia process oxidation sweetening device of recovery ammonia top of tower.
2. a kind of negative-pressure operation according to claim 1 produces the device of concentrated ammonia liquor, it is characterised in that the dry vacuum
Pump is one or both of Reciprocatory dry vavuum pump, dry type screw pump, dry type Roots vaccum pump, dry type pawl pump combination of the above.
3. a kind of negative-pressure operation according to claim 1 produces the device of concentrated ammonia liquor, it is characterised in that the recovery ammonia tower
For material filling type, board-like or filler and the recovery ammonia tower of board-like combining form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720085760.6U CN206476756U (en) | 2017-01-23 | 2017-01-23 | A kind of negative-pressure operation produces the device of concentrated ammonia liquor |
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| CN201720085760.6U CN206476756U (en) | 2017-01-23 | 2017-01-23 | A kind of negative-pressure operation produces the device of concentrated ammonia liquor |
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| CN206476756U true CN206476756U (en) | 2017-09-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107827124A (en) * | 2017-12-08 | 2018-03-23 | 烟台国邦化工机械科技有限公司 | A kind of ammonia recovery system of mixture containing ammonia and process |
-
2017
- 2017-01-23 CN CN201720085760.6U patent/CN206476756U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107827124A (en) * | 2017-12-08 | 2018-03-23 | 烟台国邦化工机械科技有限公司 | A kind of ammonia recovery system of mixture containing ammonia and process |
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