CN2573983Y - Ammonioa synthetic gas cooling and condensing separator - Google Patents
Ammonioa synthetic gas cooling and condensing separator Download PDFInfo
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- CN2573983Y CN2573983Y CN02277027U CN02277027U CN2573983Y CN 2573983 Y CN2573983 Y CN 2573983Y CN 02277027 U CN02277027 U CN 02277027U CN 02277027 U CN02277027 U CN 02277027U CN 2573983 Y CN2573983 Y CN 2573983Y
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- heat exchanger
- tube
- cold
- ammonia synthesis
- friendship
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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
The utility model relates to an ammonia synthesis gas cooling and condensing separator, which is used for the production of an ammonia synthesis plant and belongs to the chemical industry. As a heat exchange tube of the traditional cooling separator is a smooth tube, the heat resistance is large, the volume is large, the efficiency is low, and heat transfer dead area exists. The utility model adopts a spiral ring heat exchange tube (9) and a cyclone flow guiding plate (12) for guiding, two stuffing boxes (10) and (4) with small diameters are used, so the cooling and condensing separating performance is caused to be greatly improved, the heat transfer efficiency is high, the separating efficiency is greatly improved, and meanwhile, the gas flow state in the separator is also improved.
Description
A kind of relating in the Ammonia Production, is with H
2, N
2Ammonia cooling condensation and equipment---the ammonia synthesis gas cooling condensation separator that makes it to separate are used for the ammonia synthesis of ammonia factory in the gas, belong to chemical industry.
In ammonia synthesis is produced, after the hydrogen and nitrogen gas body portion synthetic ammonia, contain H
2, N
2, NH
3Mist progressively is cooled to below the normal temperature, makes the gas ammonia of gas become liquefied ammonia, in advance to separate.Chilling temperature is divided into three grades or level Four usually, and first order water is cooled to 40 ℃～45 ℃ indirectly, and the second level is cooled to 10 ℃～16 ℃ indirectly with the hydrogen and nitrogen gas of low temperature-10 ℃～2 ℃, and the gas ammonia part in the rich ammonia gaseous mixture is condensed into liquefied ammonia and separates.The third level is cooled to-10 ℃～2 ℃ indirectly with the liquefied ammonia evaporation, and the gas ammonia in the gaseous mixture continues to be condensed into liquid and separates, and its cooling, condensation, separation process are as shown in Figure 1.
Referring to Fig. 1, one-level is that water cools off indirectly, and the second level is cold between liquefied ammonia, and the third level is cold between liquefied ammonia, and the fourth stage is cold between liquefied ammonia.
Be to realize that said process, existing method are that the ammonia branch after cold is combined into an equipment with cool exchanger and ammonia, be commonly called as cold friendship, structure such as Fig. 2 of traditional cold friendship show:
Traditional cold is handed over as shown in Figure 2, and it is made up of little stuffing-box (A1), top cover (A2), big stuffing-box (A3), internals cylindrical shell (A4), shell (A5), circular deflecting plate (A6), central tube (A7), heat exchanger tube (A8), collector box (A9), concentric drums (A10), ring baffle plate (A11), the dead gas area of circumference (A12), middle dead gas area (A13), top inlet (c1), cold air outlet (b2), top exit (c2), liquefied ammonia outlet (a1), bottom air inlet (b1).High voltage bearing heavy wall urceolus (A5) contains whole cool exchanger, and top is big lid (A2), and the bottom of shell (A5) is spherical, and internals are made up of top heat exchanger and bottom separator.The top heat exchanger is a shell and tube, heat exchanger is made up of upper perforated plate (A14), heat exchanger tube (A8), circular deflection plate (A6), ring baffle plate (A11), collector box (A9), separator is made up of several concentric drums (A10), and mouth cylinder has many apertures.
The hydrogen nitrogen mixed gas temperature that contains 10～17% gas ammonias is 40 ℃～45 ℃, enters in the pipe of heat exchanger from top inlet (c1), and by the outer cold air cooling from lower to upper of pipe, partly gas ammonia is condensed into liquid gradually from top to bottom.Have in the mixture pipe of liquefied ammonia and be gathered in the collector box (A9), through central tube (A7), (c2) draws cold friendship by top exit.Temperature is 2 ℃～10 ℃ hydrogen nitrogen mixed gas that contain the low temperature of liquefied ammonia, enter separator centres cylinder by the bottom, aperture radially flows to the outmost turns cylinder by center drum, gas phase liquefied ammonia by aperture be diverted to the bottom, gas from bottom to top toward baffling between the Tube Sheet of Heat Exchanger of top to heat exchanger top.Separating back condensation liquefied ammonia draws from (a1) mouth.
From figure as can be seen, the shortcoming of this cold exchange separator is:
1, heat exchanger tube (A8) is a plain tube, and heat transfer coefficient is little, under identical thermic load, needs heat transfer area big, and it is many promptly to manage number.If the holding tube number is certain, then thermic load is little, and cold air gos up low, and promptly the refrigerating capacity rate of recovery is low.
2, air resistance is big, rich ammonia hydrogen and nitrogen gas from top to bottom flows in heat exchanger tube (A8) and is cooled off by the outer cold air from bottom to top of pipe (A8), the part gas ammonia is condensed into liquefied ammonia, when gas-liquid mixture enters collector box (A9) baffling through central tube (A7), part liquefied ammonia is gathered in heat exchanger tube (A8) the bottom collector box (A9), form a fluid column, the gas flow resistance is increased.
3, bottom aperture concentric cylinder type gas-liquid separator separates efficient is low.
4, the top annular space has a big packing seal circle (A3) between the inner/outer tube, goes here and there mutually to stop hot and cold gas.This seal diameter is big, is difficult for compressing, and leaks easily.
5, Tube Sheet of Heat Exchanger has ring baffle plate (A11) and circular deflection plate (A6) to be nested outward, and its purpose has two: one prevents to manage outer gas bias current; Its two fixing tube makes it unshift distortion, but two parts (be circumference and center) of this deflection plate between plate have the immobilising dead band of gas, make the heat exchange area utilization rate not high, as shown in Figure 3.
In view of this, the purpose of this utility model just is a kind of good seal performance is provided, and heat-transfer effect is good, novel ammonia synthesis gas cooling condensation separator rational in infrastructure.
The utility model is realized by following technological means, big stuffing-box is designed to little stuffing-box, increase sealing reliability and be easy to compress, change plain tube into helix tube and increase heat-transfer effect, change concentric design into cyclone plate, for air-flow trend by hot gas walk in the pipe, cold air walks that pipe is outer to be designed to the spring spiral coil, realizes the purpose of this utility model by above-mentioned technological means.Below in conjunction with drawings and Examples in detail, architectural feature of the present utility model and technology characteristics are described in detail.
Description of drawings
Fig. 1: traditional ammonia synthesis system cooling, condensation, separation process figure.
Fig. 2: traditional cold exchanger arrangement figure
Fig. 3: traditional cold is handed over the Cool air forced circulation situation map
Fig. 4: ammonia synthesis cooling condensation separator
Fig. 5: heat-transfer pipe and spiral coil
Fig. 6: cyclone plate
Referring to Fig. 4, it is made up of the utility model last stuffing-box (1), threeway (2), heat exchanger upper center tube (3), stuffing-box (4), the big lid of outer cylinder body (5), heat outlet (6), spring helix tube (7), outer cover of heat exchanger (8), heat exchanger tube (9), cold friendship inner core (10), cold friendship urceolus (11), cyclone plate (12), overflow pipe (13), heat exchanger lower center tube (14), following stuffing-box (15), cold air import (16), liquefied ammonia outlet (17), hot air intake (18), cold air outlet (19).
Last stuffing-box (1), stuffing-box (4) and following stuffing-box (15) are annular, make by soft graphite corrosion-resistant, heatproof, heat exchanger upper center tube (3) is a straight tube, the big lid of outer cylinder body (5) is circular slab, it links to each other with cold friendship urceolus (11), spring spiral coil (7) is made by the circle silk of φ 3～4, and its pitch is identical with helicla flute, and the spring spiral is on spiral fluted sun line.Shell is made up of cold friendship urceolus (11), big lid (5), threeway (2) three parts, and internals are made up of cold friendship inner core (10), outer cover of heat exchanger (8), separation cyclone plate (12).The ghost cylinder that cold friendship cylindrical shell (11) is rolled into for slab, wherein have cold air import (16), liquefied ammonia outlet (17) and heat outlet (19), the upper end of cylindrical shell (11) links to each other with the big lid of urceolus (5), the big lid of urceolus (5) is circular slab, there is a through hole centre, the usefulness that supplies threeway (2) to pass through, hot air intake (18) links to each other with threeway (2), hot gas enters in the inner core (10) through the aperture of threeway (2) by cooling inner core (10) top, cold air is discharged from top vent (19) through threeway (2), it is positioned at the middle and upper part of cooling condensation separator outer cover of heat exchanger (8), it is an empty tube, respectively there is a tube sheet at two ends, for the usefulness that installs and fixes heat exchanger tube (9), heat exchanger tube (9) just is fixed between two tube sheets, and the upper end of inner core (10) links to each other with heat exchanger upper center tube (3), and cold air is discharged from cold air outlet (19) through heat exchanger upper center tube (3).The lower end of outer cover of heat exchanger (8) links to each other with heat exchanger lower center tube (14), and central tube (14) passes through the bottom mesopore of cold friendship urceolus (11) and links to each other with cold air import (16).
In the middle and lower part of cold friendship inner core (10) cyclone plate (12) is housed, the structure of cyclone plate (12) as shown in Figure 6, it by overflow pipe (13), hold that liquid bath (12a), triangle flow deflector (12b), blind plate (12c) are formed, overflow pipe (13) is a straight tube, every group of 6-8 root is distributed in annular and holds in the liquid bath (12a), for the usefulness of cooled liquefied ammonia water conservancy diversion.Holding liquid bath (12a) is the endless metal groove, it links to each other at inner ring with whirlwind flow deflector (12b), whirlwind flow deflector (12b) is a triangle, become 13 °～18 ° angles with horizontal line, flow deflector (12b) termination is held liquid bath (12a), the other end is that inner ring and blind plate (12c) join, blind plate (12c) is a circular slab, there is a circular port centre, the usefulness that supplies heat exchanger lower center tube (14) to pass through, cyclone plate (12) installs 2～3 in whole cold exchanged heat device, decide on the capacity of cold friendship, and it is serially connected with on the heat exchanger lower center tube (14).
Fig. 5 is heat-transfer pipe and spiral coil structure cutaway view, turn (7A), heat-transfer pipe (9A), and this structure is one of design feature of the present utility model.
The workflow of ammonia synthesis cooling condensation separator: rich ammonia hydrogen nitrogen hot gas, about 40 ℃ of temperature, ammonia content about 10～16% air inlets from the top (18) enter outside the Tube Sheet of Heat Exchanger through threeway (2), the past current downflow in helicla flute limes marginis cooling limit along every pipe, temperature reduces gradually, the part gas ammonia is condensed into droplet, comes out until the bottom.Gas-liquid mixture enters first cyclone plate, under the effect of gas channeling plate, cyclone type rotates fast, drop is thrown toward circumference and holds liquid bath, flow to the next one by overflow pipe (13) and hold liquid bath, through entering second cyclone plate after first block of plate, rotate equally, drop is thrown toward and holds liquid bath, so through 2～3 cyclone plates, the liquefied ammonia in the gas is separated substantially, and liquefied ammonia flows out from outlet (17), refrigerating gas comes out from the aperture of cylindrical shell bottom, up (6) discharge through the gas outlet along the inner/outer tube annular space.
The hydrogen and nitrogen gas body that temperature is 2 ℃～8 ℃ is in import (16) enters the pipe of heat exchanger lower center tube (14), heat exchanger (9), from bottom to top spirality rises in pipe, is managed outer hot gas heating, and temperature rises to 25 ℃～28 ℃, discharge by outlet (19), thereby finish a working cycles.
1, the utility model is owing to adopting twice minor diameter stuffing-boxes (1) and (4) design to replace original major diameter filler at the top, and sealing surface is little, is easy to compress high and difficult leakage of reliability.
2, heat exchanger tube (9) is by the smooth spiral grooved tube that is designed to, and the inside and outside gas flow of pipe forms turbulence state, and heat transmission resistance is little, and heat-transfer effect is good.
3, pipe is outer is with spiral coil, has both fixed pipe, prevents its swing, has reduced the air-flow dead band again, increases heat-transfer effect.
4, because of outside managing thread groove tube is arranged, the fine particles ammonia of condensation in the gas phase flows downward through barrel, becomes big drop by vaporific particle coagulation, helps gas-liquid separation.
5, the guide effect of cyclone plate is rotated gas at a high speed, and liquefied ammonia is got rid of to the outer ring, runs into barrel and promptly separates, and has improved separative efficiency.
Claims (4)
1, relate to a kind of ammonia synthesis gas cooling condensation separator, be used for ammonia synthesis production, it is characterized in that: the cold friendship urceolus (11) that it is rolled into by slab, in adorn cold friendship inner core (10), the big lid of outer cylinder body (5) is circular slab, it and cold friendship urceolus (11) are attached thereto in the upper end, the upper end of cold friendship inner core (10) links to each other with heat exchanger upper center tube (3), upper center tube (3) is a straight tube, it passes through big lid of outer cylinder body (5) and threeway (2), heat exchanger (8) is equipped with in the middle and upper part of cold friendship inner core (10), respectively there is a tube sheet at its two ends, for installing and fixing heat exchanger tube (9), the lower end of outer cover of heat exchanger (8) links to each other with heat exchanger lower center tube (14), lower center tube (14) passes through the bottom mesopore of cold friendship urceolus (11), and link to each other with cold air air inlet (16), cyclone plate (12) is equipped with in the middle and lower part of cold friendship inner core (10), cyclone plate (12) is 2～3, and it is serially connected with on the heat exchanger lower center tube (14).
2, a kind of ammonia synthesis gas cooling condensation separator according to claim 1 is characterized in that, adopts two logical small diameter circular stuffing-box (1) and (4) in the upper end of cooling condensation separator, and its material is corrosion-resistant, the soft graphite of heatproof.
3, a kind of ammonia synthesis gas cooling condensation separator according to claim 1 is characterized in that, spring spiral coil (7) is made by φ 3～φ 4 circle silks, is contained on the spirality heat exchanger tube (9).
4, a kind of ammonia synthesis cooling condensation separator according to claim 1, it is characterized in that, cyclone plate (12) it by overflow pipe (13), hold liquid bath (12a), triangle flow deflector (12b), blind plate (13c) and constituted, overflow pipe (13) is that straight tube, 6～8 are on one group of uniform endless metal groove (12a), it links to each other at inner ring with whirlwind flow deflector (12b), whirlwind flow deflector (12b) is a triangle, becomes 13 °～18 ° angles with horizontal line, and the one end links to each other with blind plate (12c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02277027U CN2573983Y (en) | 2002-08-06 | 2002-08-06 | Ammonioa synthetic gas cooling and condensing separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02277027U CN2573983Y (en) | 2002-08-06 | 2002-08-06 | Ammonioa synthetic gas cooling and condensing separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2573983Y true CN2573983Y (en) | 2003-09-17 |
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ID=33740740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02277027U Expired - Lifetime CN2573983Y (en) | 2002-08-06 | 2002-08-06 | Ammonioa synthetic gas cooling and condensing separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2573983Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009085382A2 (en) * | 2007-12-27 | 2009-07-09 | General Electric Company | Sealing assembly for use with a pressurized vessel and methods of assembling the same |
| CN102923731A (en) * | 2012-11-09 | 2013-02-13 | 湖南高安新材料有限公司 | Utilizing device and method for cold energy in high-purity ammonia preparation process |
| CN104913597A (en) * | 2015-06-08 | 2015-09-16 | 大连冷冻机股份有限公司 | Ammonia cooling dewaterer with cyclone separation function |
-
2002
- 2002-08-06 CN CN02277027U patent/CN2573983Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009085382A2 (en) * | 2007-12-27 | 2009-07-09 | General Electric Company | Sealing assembly for use with a pressurized vessel and methods of assembling the same |
| WO2009085382A3 (en) * | 2007-12-27 | 2013-08-01 | General Electric Company | Sealing assembly for use with a pressurized vessel and methods of assembling the same |
| CN102923731A (en) * | 2012-11-09 | 2013-02-13 | 湖南高安新材料有限公司 | Utilizing device and method for cold energy in high-purity ammonia preparation process |
| CN104913597A (en) * | 2015-06-08 | 2015-09-16 | 大连冷冻机股份有限公司 | Ammonia cooling dewaterer with cyclone separation function |
| CN104913597B (en) * | 2015-06-08 | 2017-04-19 | 大连冷冻机股份有限公司 | Ammonia cooling dewaterer with cyclone separation function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120806 Granted publication date: 20030917 |