CN202116326U - Cold exchange and two-stage ammonia cooling combination device - Google Patents
Cold exchange and two-stage ammonia cooling combination device Download PDFInfo
- Publication number
- CN202116326U CN202116326U CN2011201910896U CN201120191089U CN202116326U CN 202116326 U CN202116326 U CN 202116326U CN 2011201910896 U CN2011201910896 U CN 2011201910896U CN 201120191089 U CN201120191089 U CN 201120191089U CN 202116326 U CN202116326 U CN 202116326U
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- cold
- ammonia
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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
- Y02P20/10—Process efficiency
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Abstract
A cold exchange and two-stage ammonia cooling combination device comprises a cold exchange section, a primary ammonia cooling section and a secondary ammonia cooling section. A heat exchange element for cold and heat exchange is a double-sleeve, two ends of an outer sleeve of the double-sleeve are welded on a corresponding tube plate, the left end of an inner tube penetrating through the outer sleeve is welded on a collector box tube plate, the right end of the inner tube and the corresponding tube plate are in a detachable sealing structure with nuts for locking packing, and the cold exchange section is provided with a baffle rod for supporting the inner tube and stopping liquid drops condensed on a tube wall, so that the liquid drops are collected to form larger liquid drops, fall to the bottom of the cylinder and guided to an ammonia storage tank from an outlet. Besides, the lower portion of the right end of the device is provided with an outlet and an inlet which are connected with an ammonia separation and storage tank. The cold exchange and two-stage ammonia cooling combination device integrates precooling cold energy recovery (cold exchange), primary ammonia separation, primary ammonia cooling and secondary ammonia cooling, and simultaneously adopts a double-sleeve structure, so that hot air is cooled twice by evaporated ammonia outside the tube and cold air in the inner tube, and heat exchange efficiency is high.
Description
Technical field
The utility model relates to the cooling of compound probability reaction gas, condensation, cold recovery use device; Further be meant primary amine cooler, secondary amine cooler, cool-heat-exchanger associated plant, be applied in the ammonia synthesizing industry.
Background technology
After hydrogen, the nitrogen reaction, about 60%
～70%Generated ammonia, the rising of reaction gas temperature, ammonia content are increased.To become liquefied ammonia to these gas ammonias, become product, must be cooled to normal temperature indirectly with cold water earlier; Be cooled to indirectly about 0 ℃ with the liquefied ammonia vapor cooling system then; The part gas ammonia is condensed into liquefied ammonia in the reaction gas, draws separation, is cooled to indirectly about-10 ℃～-15 ℃ through the secondary amine type of cooling again; Most of gas ammonia is condensed into liquefied ammonia; After drawing separation, after containing ammonia in the gas phase oneself reducing to the high gas at normal temperature heat exchange (cold) of 2%～3%. ammonia content is low, temperature is low gas and ammonia content, get into subsequent processing.
It is five separate equipment that technology is reclaimed in traditional cooling, condensation, branch ammonia, precooling, needs very long low temperature connecting tube like this, takies floor area and space, and five freezing losses of independent means are big, and it is many to consume metallic substance, and management and control is difficult.Little with time space stringing area, the heat exchange weak effect.
Summary of the invention
The technical problem that the utility model will solve is; Defective to the prior art existence; Propose a kind of cold cold associated plant of two-stage ammonia of giving, its collection precooling reclaims that cold (cold friendship), flash trapping stage ammonia, primary amine are cold, secondary amine is cooler than one, adopts double-tube structure simultaneously; Hot gas is managed outer vaporized ammonia and interior pipe cold air dual-cooled, and heat exchange efficiency is high.
The technical scheme of the utility model is; The said cold cold associated plant of two-stage ammonia of giving comprises the ammonia cooled case; Its constructional feature is, the left end of ammonia cooled case is provided with cold air outlet after water-cooled hot air intake and the cold friendship and right-hand member has end socket, pipe left end tube sheet, outer tube left end tube sheet, dividing plate, outer tube right-hand member tube sheet, interior pipe right-hand member tube sheet in being provided with successively in the ammonia cooled case; Between interior pipe left end tube sheet and the ammonia cooled case left end collector box is arranged; Being cold friendship section between interior pipe left end tube sheet and the outer tube left end tube sheet, is cold section of primary amine between outer tube left end tube sheet and the dividing plate, is cold section of secondary amine between dividing plate and the outer tube right-hand member tube sheet; Between outer tube right-hand member tube sheet and the interior pipe right-hand member tube sheet is a right chamber, is right two chambeies between interior pipe right-hand member tube sheet and the end socket; The bottom that primary amine is cold section is provided with the first liquefied ammonia import and the top of cold section of this primary amine is provided with the outlet of primary amine evaporation vapour ammonia, and the bottom that secondary amine is cold section is provided with the second liquefied ammonia import and the top of cold section of this secondary amine is provided with the outlet of secondary amine evaporation vapour ammonia; Be positioned at primary amine and be connected with outer tube left end tube sheet with the left end of many outer tubes of cold section of secondary amine and be communicated with cold friendship section for cold section, the right-hand member of said each outer tube is connected with outer tube right-hand member tube sheet and is communicated with a right chamber; Be installed with in the every outer tube in one between pipe and this outer tube and the interior pipe and leave the gap; The left end of managing in each links to each other with interior pipe left end tube sheet and is communicated with collector box, and the right-hand member of managing in each links to each other with interior pipe right-hand member tube sheet and is communicated with right two chambeies; Said water-cooled hot air intake communicates with cold friendship section, and cold friendship back cold air outlet communicates with collector box; Cold friendship section bottom has the liquefied ammonia outlet to be communicated with the ammonia storage tank, and bottom, a right chamber has outlet to separate with ammonia and the import of hold-up vessel is communicated with, and this ammonia separates and the top of hold-up vessel has the air outlet to be communicated with said right two chambeies through pipe.
Also can rod baffle be set in cold friendship section.
Below the utility model made further specify.
Referring to Fig. 1, the working process of the utility model is, the high water-cooled hot gas of ammonia content gets into cold friendships sections 23 from the water-cooled hot air intake 22 of the utility model device left end; Than the cold air cooling, the part gas ammonia becomes liquefied ammonia by interior pipe 11, and liquefied ammonia condenses in Guan Bi and goes up the formation drop; Because the retaining liquid effect of gravity and rod baffle 15 is dropped in housing bottom, introduce ammonia storage tank 2; Gas then continues and gets into gap and the operation from left to right between cold section an of ammonia, cold section middle external tube of diamino and the interior pipe, and by outside pipe vaporized ammonia and interior pipe cold air dual-cooled, gas ammonia is condensed into liquefied ammonia gradually; This liquefied ammonia gets into a right chamber 24 and gets into that ammonia separates and after hold-up vessel (diamino branch) 5 separates liquefied ammonia from its outlet at bottom; Gas gets into right two chambeies 25 through pipe from device right-hand member end socket 6, pipe 11 in getting into again, in interior pipe 11 from right to left; Contained higher the heating of ammonia outside the pipe than hot gas; Temperature raises gradually, when close with entering associated plant hot gas (5 ℃～8 ℃ of the temperature difference), sees off from the cold friendship back cold air outlet 30 of associated plant left end.Get into cold section 9 of cold section 13 of primary amine and secondary amine from the first liquefied ammonia import 26 and the second liquefied ammonia import 27 respectively as the liquefied ammonia of heat-absorbing medium, behind the heat absorption evaporation and heat-exchange, correspondingly see off from outlet 28 of primary amine evaporation vapour ammonia and secondary amine evaporation vapour ammonia outlet 29.
The know-why of the utility model can be explained by way of example.For example, for the hydrogen, nitrogen, the ammonia mixing hot gas that contain 28 ℃～38 ℃ of ammonia 14%～20%, temperature, require will gas ammonia wherein to become liquefied ammonia and be separated into product.Its method is that the part gas ammonia is condensed into liquid with the gas cooling, and can liquefied ammonia be separated through separator becomes product.Temperature is low more, and condensation ammonia is many more, and output is high more; And residual in the gas phase to contain ammonia few more; For example pressure 15Mpa/ temperature is reduced to 5 ℃, and ammonia content is reduced to-5 ℃ for the 5.23%. temperature in the gas, and ammonia content is reduced to-11 ℃ for the 3.72%. temperature in the gas; Ammonia content is that the 3.0%. ammonia content is low more in the gas, and hydrogen, nitrogen, ammonia gas mixture circulation resynthesis react favourable more.But temperature is low more, and it is big more that cooling consumes refrigerating capacity, and according to thermodynamic principles, once cooling is bigger than repeatedly reducing to same temperature consumption refrigerating capacity.When requiring the circulation gas ammonia content to hang down, should be designed to two-stage ammonia cold (cooling).For reducing freezing loss, reclaim refrigerating capacity, promptly but contain hydrogen, nitrogen, the ammonia mixing hot gas of 28 ℃～38 ℃ of ammonia 14%～20%, temperature with separation of ammonia low temperature air cooled.Hot gas cooling has ammonia condensing simultaneously, and Quilt with air conditioning is heated to and gets into associated plant hot gas when close (5 ℃～8 ℃ of the temperature difference), from cold the friendships back cold air outlet discharge of associated plant left end.
Know by above; The utility model is a kind of cold cold associated plant of two-stage ammonia of giving, and its collection precooling reclaims that cold (cold friendship), flash trapping stage ammonia, primary amine are cold, secondary amine is cooler than one, adopts double-tube structure simultaneously; Hot gas is managed outer vaporized ammonia and interior pipe cold air dual-cooled, and heat exchange efficiency is high.
Description of drawings
Fig. 1 is a kind of example structure synoptic diagram of the utility model device;
Fig. 2 is a movable sealing structure synoptic diagram between removable tube sheet of Fig. 1 and the axial dividing plate;
Fig. 3 is an interior demountable structure synoptic diagram of managing between right-hand member tube sheet and the interior pipe among Fig. 1;
Fig. 4 is a cold friendship section rod baffle structural representation (outer tube and interior pipe are radial section) among Fig. 1.
In the drawings:
1-collector box, 2-ammonia storage tank, 3-ammonia cooled case,
4-swollen account joint, 5-ammonia separates and hold-up vessel, 6-end socket,
7-interior pipe right-hand member tube sheet, 8-outer tube right-hand member tube sheet, cold section of 9-secondary amine,
10-dividing plate, 11-interior pipe, 12-outer tube,
Cold section of 13-primary amine, 14-outer tube left end tube sheet, 15-rod baffle,
16-interior pipe left end tube sheet; 17-packing retaining ring, 18-filler,
19-filler pressing, 20-set nut, 21-filler,
The hot air intake of 22-water-cooled, 23-cold friendship section, a 24-right chamber,
25-right two chambeies, 26-the first liquefied ammonia import,
27-the second liquefied ammonia import, the outlet of 28-primary amine evaporation vapour ammonia,
The outlet of 29-secondary amine evaporation vapour ammonia, 30-cold friendship back cold air outlet.
Embodiment
As shown in Figure 1; The said cold cold associated plant of two-stage ammonia of giving of the utility model comprises ammonia cooled case 3; The left end of this ammonia cooled case 3 is provided with water-cooled hot air intake 22 and cold friendships cold air outlet 30 and right-hand member has end socket 6 afterwards; Pipe left end tube sheet 16, outer tube left end tube sheet 14, dividing plate 10, outer tube right-hand member tube sheet 8, interior pipe right-hand member tube sheet 7 have collector box 1 between interior pipe left end tube sheet 16 and ammonia cooled case 3 left ends in being provided with successively in the ammonia cooled case, are cold friendship section 23 between interior pipe left end tube sheet 16 and the outer tube left end tube sheet 14; Between outer tube left end tube sheet 14 and the dividing plate 10 cold section 13 of primary amine; Being cold section 9 of secondary amine between dividing plate 10 and the outer tube right-hand member tube sheet 8, is a right chamber 24 between outer tube right-hand member tube sheet 8 and the interior pipe right-hand member tube sheet 7, is right two chambeies 25 between interior pipe right-hand member tube sheet 7 and the end socket 6; The bottom that primary amine is cold section 13 is provided with the first liquefied ammonia import 26 and the top of cold section 13 of this primary amine is provided with primary amine evaporation vapour ammonia outlet 28, and the bottom that secondary amine is cold section 9 is provided with the second liquefied ammonia import 27 and the top of cold section 9 of this secondary amine is provided with secondary amine evaporation vapour ammonia outlet 29; The left end that is positioned at the many outer tubes 12 of cold section 9 of cold section 13 of primary amine and secondary amine is connected with outer tube left end tube sheet 14 and is communicated with cold friendship section 23, and the right-hand member of said each outer tube 12 is connected with outer tube right-hand member tube sheet 8 and is communicated with a right chamber 24; Be installed with in the every outer tube 12 to manage in one between 11 (forming two sleeve pipes) and this outer tube 12 and the interior pipe 11 and leave the gap; The left end of pipe 11 links to each other with interior pipe left end tube sheet 16 and is communicated with collector box 1 in each, and the right-hand member of pipe 11 is continuous and be communicated with right two chambeies 25 with interior pipe right-hand member tube sheet 7 in each; Said water-cooled hot air intake 22 communicates with cold friendship section 23, and cold friendship back cold air outlet 30 communicates with collector box 1; Cold friendship section 23 bottoms have the liquefied ammonia outlet to be communicated with ammonia storage tank 2, and 24 bottoms, a right chamber have outlet to separate with ammonia and the import of hold-up vessel 5 is communicated with, and this ammonia separates and the top of hold-up vessel 5 has the air outlet to be communicated with said right two chambeies 25 through pipe.
11 heat conduction of interior pipe, guiding dual function.
Referring to Fig. 1, on ammonia cooled case 3 and in cold section 13 of primary amine or cold section 9 position of secondary amine, one to two expansion joint 4 is set, flexible to absorb the housing that causes because of temperature variation.
Referring to Fig. 2, seal with filler 18 between said dividing plate 10 and the ammonia cooled case 3; When two sleeve pipes (outer tube 12 with interior pipe 11) produce when flexible, dividing plate 10 can move thereupon, and the liquid of cold section 9 of cold section 13 of primary amine and secondary amine is stopped and can not go here and there mutually by filler 18.
Referring to Fig. 3; Filler 21 is set between the pore of interior pipe 11 right-hand members and interior pipe right-hand member tube sheet 7 also to be compressed with set nut 20; The flexible connection of pipe 11 and interior pipe right-hand member tube sheet 7 in forming thus; Can interior pipe 11 be pulled out from the 3 left end translations of ammonia cooled case together with left end collector box 1, make things convenient for outer tube left end tube sheet 14 and interior pipe right-hand member tube sheet 7 to detect, keep in repair.
Referring to Fig. 1 and Fig. 4, also can rod baffle 15 be set in cold friendship section 23; Pipe, retaining liquid, reinforced heat conduction triple role in 15 supportings of rod baffle.
Claims (5)
1. cold cold associated plant of two-stage ammonia of giving; Comprise ammonia cooled case (3); It is characterized in that; The left end of this ammonia cooled case (3) is provided with water-cooled hot air intake (22) and cold friendship back cold air outlet (30) and right-hand member has end socket (6); Pipe left end tube sheet (16), outer tube left end tube sheet (14), dividing plate (10), outer tube right-hand member tube sheet (8), interior pipe right-hand member tube sheet (7) have collector box (1) between interior pipe left end tube sheet (16) and ammonia cooled case (3) left end in being provided with successively in the ammonia cooled case, are cold friendship section (23) between interior pipe left end tube sheet (16) and the outer tube left end tube sheet (14); Be cold section of primary amine (13) between outer tube left end tube sheet (14) and the dividing plate (10); Being cold section of secondary amine (9) between dividing plate (10) and the outer tube right-hand member tube sheet (8), is a right chamber (24) between outer tube right-hand member tube sheet (8) and the interior pipe right-hand member tube sheet (7), is right two chambeies (25) between interior pipe right-hand member tube sheet (7) and the end socket (6); The bottom of primary amine cold section (13) is provided with the first liquefied ammonia import (26) and the top of this primary amine cold section (13) is provided with primary amine evaporation vapour ammonia outlet (28), and the bottom of secondary amine cold section (9) is provided with the second liquefied ammonia import (27) and the top of this secondary amine cold section (9) is provided with secondary amine evaporation vapour ammonia outlet (29); The left end that is positioned at the many outer tubes (12) of primary amine cold section (13) and secondary amine cold section (9) is connected with outer tube left end tube sheet (14) and is communicated with cold friendship section (23), and the right-hand member of said each outer tube (12) is connected with outer tube right-hand member tube sheet (8) and is communicated with a right chamber (24); Be installed with in the every outer tube (12) to manage between (11) and this outer tube (12) and the interior pipe (11) in one and leave the gap; Left end of pipe (11) links to each other with interior pipe left end tube sheet (16) and is communicated with collector box (1) in each, and right-hand member of pipe (11) is continuous and be communicated with right two chambeies (25) with interior pipe right-hand member tube sheet (7) in each; Said water-cooled hot air intake (22) communicates with cold friendship section (23), and the cold friendship back same collector box of cold air outlet (30) (1) communicates; Cold friendship section (23) bottom has the liquefied ammonia outlet to be communicated with ammonia storage tank (2); Bottom, a right chamber (24) has outlet to separate with ammonia and the import of hold-up vessel (5) is communicated with, and this ammonia separates and the top of hold-up vessel (5) has the air outlet to be communicated with said right two chambeies (25) through pipe.
2. according to the said cold cold associated plant of two-stage ammonia of giving of claim 1, it is characterized in that, go up and one to two expansion joint (4) is set in primary amine cold section (13) or cold section (9) position of secondary amine at ammonia cooled case (3).
3. according to the said cold cold associated plant of two-stage ammonia of giving of claim 1, it is characterized in that, seal with filler (18) between said dividing plate (10) and the ammonia cooled case (3).
4. according to the said cold cold associated plant of two-stage ammonia of giving of claim 1; It is characterized in that; In filler (21) is set between the pore of pipe (11) right-hand member and interior pipe right-hand member tube sheet (7) and compresses with set nut (20), manage the flexible connection of (11) and interior pipe right-hand member tube sheet (7) in forming.
5. according to the said cold cold associated plant of two-stage ammonia of giving of claim 1, it is characterized in that, rod baffle (15) is set in cold friendship section (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201910896U CN202116326U (en) | 2011-06-09 | 2011-06-09 | Cold exchange and two-stage ammonia cooling combination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201910896U CN202116326U (en) | 2011-06-09 | 2011-06-09 | Cold exchange and two-stage ammonia cooling combination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202116326U true CN202116326U (en) | 2012-01-18 |
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ID=45457407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201910896U Expired - Lifetime CN202116326U (en) | 2011-06-09 | 2011-06-09 | Cold exchange and two-stage ammonia cooling combination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202116326U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249260A (en) * | 2011-06-09 | 2011-11-23 | 湖南安淳高新技术有限公司 | Cold crosslink and two-stage ammonia-cooling combined device |
| CN105571352A (en) * | 2014-10-13 | 2016-05-11 | 中国石化工程建设有限公司 | Novel single-tube pass floating head heat exchanger |
| CN107677148A (en) * | 2017-10-10 | 2018-02-09 | 常州大学 | A kind of sleeve tube U shape heat exchange of heat pipe |
| CN109276969A (en) * | 2018-11-20 | 2019-01-29 | 陆飞浩 | A kind of cooling gas-liquid separator |
-
2011
- 2011-06-09 CN CN2011201910896U patent/CN202116326U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249260A (en) * | 2011-06-09 | 2011-11-23 | 湖南安淳高新技术有限公司 | Cold crosslink and two-stage ammonia-cooling combined device |
| CN105571352A (en) * | 2014-10-13 | 2016-05-11 | 中国石化工程建设有限公司 | Novel single-tube pass floating head heat exchanger |
| CN107677148A (en) * | 2017-10-10 | 2018-02-09 | 常州大学 | A kind of sleeve tube U shape heat exchange of heat pipe |
| CN109276969A (en) * | 2018-11-20 | 2019-01-29 | 陆飞浩 | A kind of cooling gas-liquid separator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |
|
| CX01 | Expiry of patent term |