CN203922917U - A kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water - Google Patents
A kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water Download PDFInfo
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- CN203922917U CN203922917U CN201420331748.5U CN201420331748U CN203922917U CN 203922917 U CN203922917 U CN 203922917U CN 201420331748 U CN201420331748 U CN 201420331748U CN 203922917 U CN203922917 U CN 203922917U
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- ammonium nitrate
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Abstract
The utility model provides a kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water, comprise the process steam treating column, treating column pump, dry washing tank, dry scrubber pump, one section of vaporizer flash tank, one section of evaporator heat exchanger, one section of vaporizer separator, evaporator-condenser, atmospheric storage tank and the condensate pump that connect successively, it is characterized in that described process steam treating column also connects process steam condenser, processes condensation liquid bath and processes condensate pump; Described process steam treating column is provided with online PH meter and magnetic flow meter.The utility model is introduced the process steam treating column of porous ammonium nitrate device by the ammonia nitrogen waste water that ambient neutral process ammonium nitrate device is produced, as process steam treating column washing composition, use, and by adding acid treatment, the most of ammonia in waste water is converted into NH
4nO
3after, obtain the relatively NH of high density
4nO
3one section of vaporizer flash tank that solution returns to porous ammonium nitrate device reclaims, and the process steam lime set ammonia-nitrogen content that simultaneously goes out this pretreatment system can be reduced to below 5g/L, meets the water inlet requirement of electrodialysis unit completely.
Description
Technical field
The utility model relates to a kind of pretreatment system of ambient neutral process ammonium nitrate device waste water, belongs to chemical industry environmental protection technical field.
Background technology
In the last few years, to safety and environmental protection, work had proposed more and more higher requirement in country, and national departments concerned is also increasing to the supervision of safety and environmental protection work.Concerning enterprise, safety and environmental protection work directly concerns company interest and development.Wastewater treatment is an important content of efforts at environmental protection, and the ammonia nitrogen waste water that the ammonium nitrate device of current domestic ambient neutral process produces is difficult to be effectively addressed, and Some Enterprises adopts electroosmose process to process ammonia nitrogen waste water and obtained good effect.
The water inlet index of electrodialysis unit is demarcated by specific conductivity, and the stoste specific conductivity that general requirement enters membrane stack is less than 13000 μ s/cm.Yet the ammonia nitrogen waste water that ambient neutral process produces, due to NH
3and NH
4nO
3content is up to 40～50g/L, the stoste specific conductivity that directly enters electrodialysis membrane stack is general all more than 22000 μ s/cm, can cause that pole plate heating is serious, membrane stack is easily out of shape, degradation result under processing efficiency, and power consumption increases, significantly shorten the work-ing life of membrane stack.For further energy-saving and cost-reducing, improve waste water treatment efficiency, alleviate equipment loss, research and develop the technical scheme of this Wastewater Pretreatment.
Utility model content
The purpose of this utility model is to provide a kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water, it has broken through original design production technology, the ammonia nitrogen waste water that ambient neutral process is produced is as the washing composition of another set of pressured neutral process porous ammonium nitrate device technique steam treatment tower, by combining the other parts equipment of above-mentioned porous ammonium nitrate device, the most ammonia-nitrogen in this ammonia nitrogen waste water is transformed to recovery, to realize out the ammonia nitrogen waste water of this pretreatment system, meet the water inlet requirement of electrodialysis unit completely.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water, comprise the process steam treating column, treating column pump, dry washing tank, dry scrubber pump, one section of vaporizer flash tank, one section of evaporator heat exchanger, one section of vaporizer separator, evaporator-condenser, atmospheric storage tank and the condensate pump that connect successively, it is characterized in that described process steam treating column also connects process steam condenser, processes condensation liquid bath and processes condensate pump.
In an embodiment of the present utility model, it is characterized in that the ammonia nitrogen waste water that ambient neutral process ammonium nitrate device produces is configured pipeline, the described process steam treating column of introducing porous ammonium nitrate device, replaces former process steam phlegma to use as process steam treating column washing composition.
In an embodiment of the present utility model, it is characterized in that described process steam treating column is provided with online PH meter and magnetic flow meter.
The utility model is through the operation more than 5 years, and result proves treatment effect highly significant.If the ammonia nitrogen waste water that ambient neutral process ammonium nitrate device produces is directly sent to electrodialysis unit without pre-treatment, enter the stoste specific conductivity of membrane stack general all more than 22000 μ s/cm, the electric current of every group of membrane stack surpasses 200A, and pole plate heating is serious, membrane stack is easily out of shape, and the life-span is shorter.And after the utility model pre-treatment, the stoste specific conductivity that enters membrane stack can be controlled at below 10000 μ s/cm, electric current is substantially below 100A, and membrane stack practical life extends greatly.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As Fig. 1, the utility model schematic flow sheet.In figure: the waste water that 1 ambient neutral process ammonium nitrate device produces, the untreated process steam that 2 porous ammonium nitrate devices come, 3 process steam treating columns, 4 treating column pumps, 5 online PH meters, 6 dry washing tanks, 7 dry scrubber pump, 8 one sections of vaporizer flash tanks, 9 one sections of evaporator heat exchanger, 10 1 sections of vaporizer separators, 11 ammonium nitrate solutions after concentrated, 12 evaporator-condensers, 13 atmospheric storage tanks, 14 condensate pumps, 15 ammonia nitrogen waste waters remove electrodialysis unit, 16 treatment process steam condensers, 17 process condensation liquid bath, 18 process condensate pump, 19 ammonia nitrogen waste waters remove electrodialysis unit, 20 nitric acid add entrance, 21 middle pressure steams, 22 steam condensates, 23, water on 25 water coolants, 24, 26 water coolant backwater, 27 magnetic flow meters.
Idiographic flow is: the process steam treating column 3 of the waste water 1 introducing porous ammonium nitrate device containing ammonia nitrogen 40～50g/L that ambient neutral process ammonium nitrate device produces, as process steam treating column 3 washing composition, the untreated process steam 2 in tower, porous ammonium nitrate device being come washs; By nitric acid, adding entrance 20 to the rare nitric acid that adds concentration 60% in process steam treating column 3, is NH by the most of ammonia neutralization in waste water
4nO
3, the add-on of rare nitric acid regulates according to the potential of hydrogen of online PH meter 5; Go out after treated tower pump 4 pressurizations of solution of technique steam treatment tower 3, a part enters process steam treating column 3 as phegma after magnetic flow meter 27 meterings; Another part finally enters one section of vaporizer flash tank 8 and reclaims, then further concentrated, separated through one section of evaporator heat exchanger 9, one section of vaporizer separator 10, the ammonium nitrate solution after out concentrated of one section of evaporator heat exchanger 9 and one section of vaporizer separator 10 bottom returns to porous ammonium nitrate device; One section of vaporizer flash tank 8 and one section of vaporizer separator 10 top process steam out enters evaporator-condenser 12, after condensation, entering atmospheric storage tank 13 becomes the ammonia nitrogen waste water of concentration < 5g/L, by condensate pump 14, is sent to electrodialysis unit.
The untreated process steam 2 that porous ammonium nitrate device comes enters process steam treating column 3 bottoms, ammonia nitrogen waste water at Ta Nei and ambient neutral process ammonium nitrate device carries out convective mass transfer, fully washing, process steam after washing enters 16 condensations for the treatment of process steam condenser, the ammonia nitrogen waste water income that becomes concentration < 5g/L after condensation is processed condensation liquid bath 17, more treated condensate pump 18 is sent to electrodialysis unit.
It is to be noted, a in Fig. 1---b is conventional washing liquid flow process, be that washings is that the processing phlegma below < 5g/L provides supplementary by ammonia-nitrogen content, A---b is the utility model washings flow process, and washings is for supplementing at the ammonia nitrogen waste water of 40～50g/L with the ammonia-nitrogen content that ambient neutral process ammonium nitrate device produces.By add rare nitric acid of concentration 60% left and right in washings, control the PH of washings between 2～7, guarantee that the quantity of reflux of the washings by magnetic flow meter 27 is at 30～70m simultaneously
3/ h.In Fig. 1,15 and 19 ammonia-nitrogen content can be controlled at below 5g/L, thereby be sent to electrodialysis unit by condensate pump 14 and processing condensate pump 18, further processes.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification sheets, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (3)
1. the pretreatment system of an ambient neutral process ammonium nitrate device ammonia nitrogen waste water, comprise the process steam treating column, treating column pump, dry washing tank, dry scrubber pump, one section of vaporizer flash tank, one section of evaporator heat exchanger, one section of vaporizer separator, evaporator-condenser, atmospheric storage tank and the condensate pump that connect successively, it is characterized in that described process steam treating column also connects process steam condenser, processes condensation liquid bath and processes condensate pump.
2. the pretreatment system of a kind of ambient neutral process ammonium nitrate device ammonia nitrogen waste water according to claim 1, it is characterized in that the ammonia nitrogen waste water that ambient neutral process ammonium nitrate device produces is configured pipeline, the described process steam treating column of introducing porous ammonium nitrate device, replaces former process steam phlegma to use as process steam treating column washing composition.
3. the pretreatment system of a kind of ambient neutral process ammonium nitrate device ammonia nitrogen waste water according to claim 1, is characterized in that described process steam treating column is provided with online PH meter and magnetic flow meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420331748.5U CN203922917U (en) | 2014-06-20 | 2014-06-20 | A kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water |
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| CN201420331748.5U CN203922917U (en) | 2014-06-20 | 2014-06-20 | A kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water |
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| CN203922917U true CN203922917U (en) | 2014-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944443A (en) * | 2015-06-17 | 2015-09-30 | 安徽淮化股份有限公司 | Device for recycling gaseous condensate waste water produced in ammonium nitrate production by using neutralizer |
-
2014
- 2014-06-20 CN CN201420331748.5U patent/CN203922917U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944443A (en) * | 2015-06-17 | 2015-09-30 | 安徽淮化股份有限公司 | Device for recycling gaseous condensate waste water produced in ammonium nitrate production by using neutralizer |
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Effective date of registration: 20170124 Address after: 713100 Shaanxi city of Xingping province Dongcheng District Yingbin Avenue Patentee after: Shaanxi Xinghua Group Co.,Ltd. Address before: 713100 Xianyang city of Shaanxi province Xingping city Dongcheng District Yingbin Avenue (highway) Patentee before: Shaanxi Xinghua Chemical Co.,Ltd. |