CN204138355U - Flow-reversing dual-purpose ammonia concentrating unit - Google Patents
Flow-reversing dual-purpose ammonia concentrating unit Download PDFInfo
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- CN204138355U CN204138355U CN201420496677.4U CN201420496677U CN204138355U CN 204138355 U CN204138355 U CN 204138355U CN 201420496677 U CN201420496677 U CN 201420496677U CN 204138355 U CN204138355 U CN 204138355U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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Abstract
The utility model discloses a kind of flow-reversing dual-purpose ammonia concentrating unit, described flow-reversing dual-purpose ammonia concentrating unit mainly comprises three vaporizers and two condensers, i.e. one-level vaporizer, control vaporizer, secondary evaporimeter, first-stage condenser and secondary condenser; The application is on traditional double-effect evaporation device basic, by optimizing innovation, the flow-reversing dual-purpose method of evaporating proposed, use the steam of secondary evaporimeter to heat one-level vaporizer exactly, avoid the water vapor containing ammonia using inconvenience to use, and the cleaner second steam using deamination to take off, like this this device in process of production energy-saving efficiency more than 30%.
Description
Technical field
The utility model relates to a kind of high density ammoniacal liquor and concentrates energy saver.
Background technology
3-amino-1,2-PD, molecular formula C3H9NO2, CAS NO:616-30-8, fusing point 210 DEG C, boiling point 264-265 DEG C is medicine intermediate, the mainly X-CT contrast medium Schering AG) (i.e. Omnipaque) of water-soluble, non-ionic type, iodine fluorine alcohol, the synthesis material of Visipaque 320.The series product purposes such as Schering AG): diagnostic agent, for positive contrast agent is used in the diagnosis of non-ionic water-soluble triiodo ring x-ray, enter after in body and can absorb more x-ray than structures surrounding, thus form contrast in X-ray image.Demonstrating the form of place tube chamber profile and implicit structure thereof, is the medicament that various hospital commonly uses.
3-amino-1,2-propylene glycol technique takes route to be epoxy chloropropane-3-chloro-1,2-propylene glycol-3-amino-1,2-propylene glycol, first epoxy chloropropane is hydrolyzed in acid condition the aqueous solution obtaining 3-chlorine-1,2-propylene glycol, then uses ammonia soln by chloro-for 3-1,2-propylene glycol ammonia solution obtains 3-amino-1,2-PD aqueous solution.By dehydration, finished product obtains by thick steaming and rectifying.A large amount of ammonia circulations is there is in ammonia solution preocess.Evaporation and this part ammoniacal liquor concentrated need to consume a large amount of energy, and this part energy almost accounts for 1/5th of total cost of production, and how to carry out energy-saving and cost-reducing to this part energy is valuable thing.
Traditional double-effect evaporation is similar to the process of lower concentration Caustic Soda Concentration solid caustic soda in ion film caustic soda production process, first the caustic soda of lower concentration enters one-level internal circulation evaporator tube side, one-level vaporizer tube side is generally operate under 3-5 kilogram, shell side uses the middle pressure steam of more than 5 kilograms, the water vapor of 3-5 kilogram that in evaporative process, tube side produces enters the shell side of secondary evaporimeter, the tube side of secondary evaporimeter is then entered through the liquid caustic soda solution of the intermediate concentration of initial concentration, tube side operates at ambient pressure, so then make the boiling point lowering of liquid caustic soda solution, the steam heat-exchanging that liquid caustic soda solution after boiling point lowering and the first step produce, liquid caustic soda is concentrated to about 30%, such device can reduce the energy consumption of 50% in theory, at some in particular cases, the multiple-effect evaporator of higher progression can be adopted, such as three grades, even in some field, in such as desalting process, even can reach 10 grades to concentrate.
But in the ammoniacal liquor concentration process of 50%, the method of this routine is not suitable for, reason is that the steam containing ammonia belongs to two component steam, the boiling point of secondary steam is not only relevant with pressure, also relevant with the proportioning of two component, the condensation point of the water vapor containing a large amount of ammonia reduces, the water vapor causing one-level to evaporate contains the ammonia of more than 75%, if the condensation point of gas need will be risen to tens of kilograms higher than the boiling point of the water of secondary, this will produce certain potential safety hazard to production safety, there is certain risk for small-sized fine chemistry industry enterprise.
Utility model content
Original use of flash steam mode is changed for the problems referred to above the utility model, propose flow-reversing dual-purpose evaporation unit, use the steam of secondary evaporimeter to heat one-level vaporizer exactly, avoid the water vapor containing ammonia using inconvenience to use, and the cleaner second steam using deamination to take off, this device in process of production fractional energy savings more than 30%.Concrete technical scheme is as follows.
The application provides a kind of flow-reversing dual-purpose ammonia concentrating unit, mainly comprises three vaporizers and two condensers, i.e. one-level vaporizer, control vaporizer, secondary evaporimeter, first-stage condenser and secondary condenser; The top ammonia outlet of described one-level vaporizer is connected with first-stage condenser by pipeline, and the top of one-level vaporizer is provided with opening for feed, and the outlet of its phlegma is connected with the top of secondary condenser; Described control vaporizer and one-level vaporizer link together, and are located at the bottom of one-level vaporizer, and are connected with live steam variable valve, are connected in the middle part of it by pipeline with first-stage condenser, and such small part water vapor enters first-stage condenser; The top of described secondary evaporimeter is connected with the bottom controlling vaporizer by pipeline, its top is provided with live steam variable valve entrance, its underpart is connected by the middle part of pipeline with one-level vaporizer, and its bottom is provided with discharge port, and described live steam variable valve is used to supply live steam.
In this application, described first-stage condenser and secondary condenser also comprise cooling water inlet, cooling water outlet and phlegma discharge port respectively.
In this application, preferably, the area ratio of described one-level vaporizer, control vaporizer and secondary evaporimeter is: 1:0.15-0.3:0.6-0.9.
Preferably, described three vaporizers are stainless steel tubulation falling-film evaporator in this application.
Preferably, in this application, between the top and tubulation of described one-level vaporizer, be provided with packing layer, the height of packing layer is 1.0-1.5m.
The feature of the application is used for heating ammoniacal liquor in one-level vaporizer by the intermediate water steam that secondary evaporimeter produces, the ammonia of flow-reversing dual-purpose ammonia concentrating unit in the ammoniacal liquor of first charging and the water of 20% are evaporated, liquid after complete deamination enters secondary evaporimeter, the secondary steam of secondary evaporimeter is basic does not just contain ammonia, this secondary steam is used for heating the ammoniacal liquor in one-level vaporizer, and extraneous next live steam enters secondary evaporimeter shell side.This flow process is imitated adverse current two, can effectively energy-conservation more than 30%.
Accompanying drawing explanation
The structural representation of Fig. 1 flow-reversing dual-purpose ammonia concentrating unit.
1. one-level vaporizer, 2. first-stage condenser, 3. ammonia outlet, 4. condensate outlet, 5. controls vaporizer, 6. packing layer, 7. opening for feed, 8. live steam variable valve, 9. secondary condenser, 10. secondary evaporimeter, 11. cooling water inlets, 12. cooling water outlets, 13. one-level phlegma discharge ports, 14. B-grade condensation liquid discharge ports, 15. discharge ports.
Embodiment
Below in conjunction with accompanying drawing, explanation is further explained to the utility model.
The application relates to a kind of flow-reversing dual-purpose ammonia and concentrates energy saver, mainly adopt a kind of special double-effect evaporation device that the energy consumption of concentration 50% ammoniacal liquor in evaporating concentration process is reduced by more than 30%, because at 3-amino-1, need to use the ammoniacal liquor of 50% of a large amount of large proportioning in 2-propylene glycol production process, ammonia only less than 5% in this part ammoniacal liquor participates in reaction, and its remaining ammoniacal liquor is by recycled, evaporate these ammoniacal liquor and need consume a lot of steam, improve gradually in energy cost, energy-saving and emission-reduction task increases instantly gradually, the application is on the basis of traditional double-effect evaporation device, through optimizing innovation, the physico-chemical property suiting ammoniacal liquor has invented a set of relatively advanced concentrated energy saver, the energy consumption of effective saving 30% on the basis that can concentrate in original single-stage.
The concrete structure of device as shown in Figure 1, mainly comprises three vaporizers and two condensers, i.e. one-level vaporizer 1, controls vaporizer 5 and secondary evaporimeter 10, first-stage condenser 2 and secondary condenser 9; The top ammonia outlet 3 of described one-level vaporizer 1 is connected with first-stage condenser 2 by pipeline, and the top of one-level vaporizer 1 is provided with opening for feed 7, and the outlet 4 of its phlegma is connected with the top of secondary condenser 9; Described control vaporizer 5 links together with one-level vaporizer 1, is located at the bottom of one-level vaporizer 1, and is connected with live steam variable valve 8 by pipeline, be connected the water vapor of discharging small part in the middle part of it by pipeline with first-stage condenser 2; The top of described secondary evaporimeter 10 is connected with the bottom controlling vaporizer 5 by pipeline, its top is provided with the entrance of live steam and is connected with live steam variable valve 8 by pipeline, its underpart is connected by the middle part of pipeline with one-level vaporizer 1, in the delivery of steam of being evaporated by secondary evaporimeter 10 by this pipeline to one-level vaporizer 1, be provided with discharge port 15 bottom it in order to discharge reaction product; First-stage condenser 2 described in device and secondary condenser 9 also comprise cooling water inlet 11, cooling water outlet 12 and one-level phlegma discharge port 13 and B-grade condensation liquid discharge port 14 respectively in addition.
Specifically, for the vaporizing capacity for 5 cubes of flows per hour, the one-level vaporizer selected is DN700 diameter, the stainless steel falling-film evaporator of 70 square meters, control vaporizer and one-level vaporizer link together, and its area is 20 square meters, and the area of secondary evaporimeter is 50 square meters.
Be the ammoniacal liquor of 50% for concentration, the idiographic flow of this device in application process is: the ammonia soln when 50% in the middle of reaction system out after, flowed into the top of one-level vaporizer through opening for feed by artesian pressure, the packing layer 6 had between the top and tubulation of one-level vaporizer, like this, from the reaction system ammoniacal liquor of about about 40 DEG C out in this region just and the ammoniacal liquor mixing steam generation heat exchange of the high temperature of the inner generation of vaporizer, in this heat exchanging process, overwhelming majority ammonia leaves system with the temperature of a little higher than feeding temperature from the ammonia outlet 3 on one-level vaporizer top and enters first-stage condenser, after completing this heat exchange again, ammonia soln enters the secondary steam generation heat exchange of about 130 DEG C of column tube evaporimeter and secondary evaporimeter generation, wherein the ammonia of more than 90% and the water of 20% have all been evaporated from system, then material enters control vaporizer, control vaporizer to set up for the ease of system controls, in initial start-up, secondary evaporimeter does not have secondary steam and produces, in order to by the feed vapors temperature increase of one-level to 125 DEG C, the evaporation of the overwhelming majority just produces from control vaporizer, material is by after control vaporizer, temperature reaches 125 DEG C, most ammonia in the middle of system and a small amount of water leave, the also water of remaining about 80%, this material enters secondary evaporimeter, secondary evaporimeter uses live steam by the material evaporation of secondary evaporimeter to more than 130 DEG C, the secondary steam produced is used for heating the fresh material of one-level vaporizer.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, all should be encompassed within protection domain of the present utility model.
Claims (5)
1. flow-reversing dual-purpose ammonia concentrating unit, is characterized in that, comprises one-level vaporizer, controls vaporizer, secondary evaporimeter, first-stage condenser and secondary condenser; The top ammonia outlet of described one-level vaporizer is connected with first-stage condenser by pipeline, and the top of one-level vaporizer is provided with opening for feed, and the outlet of its phlegma is connected with the top of secondary condenser; Described control vaporizer and one-level vaporizer link together, and are located at the bottom of one-level vaporizer, and are connected with live steam variable valve, are connected in the middle part of it by pipeline with first-stage condenser; The top of described secondary evaporimeter is connected with the bottom controlling vaporizer by pipeline, and its top is connected with live steam variable valve, and its underpart is connected by the middle part of pipeline with one-level vaporizer, and its bottom is provided with discharge port.
2. flow-reversing dual-purpose ammonia concentrating unit according to claim 1, it is characterized in that, described first-stage condenser and secondary condenser also comprise cooling water inlet, cooling water outlet and phlegma discharge port respectively.
3. flow-reversing dual-purpose ammonia concentrating unit according to claim 1, is characterized in that, the area ratio of described one-level vaporizer, control vaporizer and secondary evaporimeter is: 1:0.15-0.3:0.6-0.9.
4. flow-reversing dual-purpose ammonia concentrating unit according to claim 1, is characterized in that, described one-level vaporizer, control vaporizer and secondary evaporimeter are stainless steel tubulation falling-film evaporator.
5. flow-reversing dual-purpose ammonia concentrating unit according to claim 4, is characterized in that, between the top and tubulation of described one-level vaporizer, be provided with packing layer, and the height of described packing layer is 1.0-1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496677.4U CN204138355U (en) | 2014-09-01 | 2014-09-01 | Flow-reversing dual-purpose ammonia concentrating unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496677.4U CN204138355U (en) | 2014-09-01 | 2014-09-01 | Flow-reversing dual-purpose ammonia concentrating unit |
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| CN204138355U true CN204138355U (en) | 2015-02-04 |
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| CN201420496677.4U Withdrawn - After Issue CN204138355U (en) | 2014-09-01 | 2014-09-01 | Flow-reversing dual-purpose ammonia concentrating unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190100A (en) * | 2014-09-01 | 2014-12-10 | 内蒙古圣氏化学有限公司 | Countercurrent double-effect ammonia concentration device and application thereof |
| CN108203131A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method of ammonium salt-containing wastewater treatment |
| CN108203194A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method of ammonium salt-containing wastewater treatment |
| CN108203195A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method of ammonium salt-containing wastewater treatment |
-
2014
- 2014-09-01 CN CN201420496677.4U patent/CN204138355U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190100A (en) * | 2014-09-01 | 2014-12-10 | 内蒙古圣氏化学有限公司 | Countercurrent double-effect ammonia concentration device and application thereof |
| CN108203131A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method of ammonium salt-containing wastewater treatment |
| CN108203194A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method of ammonium salt-containing wastewater treatment |
| CN108203195A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method of ammonium salt-containing wastewater treatment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20160413 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |