EP1005888A1 - Spülvorrichtung zur Entfernung von Rückständen - Google Patents
Spülvorrichtung zur Entfernung von Rückständen Download PDFInfo
- Publication number
- EP1005888A1 EP1005888A1 EP99123942A EP99123942A EP1005888A1 EP 1005888 A1 EP1005888 A1 EP 1005888A1 EP 99123942 A EP99123942 A EP 99123942A EP 99123942 A EP99123942 A EP 99123942A EP 1005888 A1 EP1005888 A1 EP 1005888A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drain
- container
- valve
- flushing
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
Definitions
- the invention relates to a flushing device for removing residues the bottom drain of an evaporator and its use for Working up saline solutions by distillation.
- Thin film evaporation is used for continuous distillation, especially for Evaporation of temperature-sensitive substances from high-boiling Residues, and for the concentration of temperature-sensitive substances used.
- you distribute the liquid by trickling it down (falling film evaporator), Action of centrifugal force (special embodiment of a Rotary evaporator), specially designed wipers (film trudder) or others Techniques for thin layers (magnitude of the layer thickness usually 0.1 mm) on the (usually) heated surfaces.
- Thin Liquid layers allow rapid evaporation, so that the contained components only briefly the (usually) higher Are exposed to temperatures in the evaporator.
- the dwell time, the temperature and the pressure (vacuum) are according to the respective separation task designed.
- Evaporation devices which are in common technical usage are already referred to as thin film evaporators, according to the invention also all other evaporation devices as thin film evaporators understood that work on the principle described above.
- a typical thin film evaporator has a vertical one from the outside heated pipe, on the inner surface of which the product to be evaporated by a rotor is spread out as a thin layer.
- the product occurs above the Heating zone in the evaporator and flows due to the mechanical distribution through the rotor as a film of liquid over the heating surface.
- the low-boiling Components evaporate as the residue drains down.
- the Vapor vapors flow through a droplet separator, which is in the head of the Evaporator is located in a separately arranged condenser condensed.
- a rotor is included for the mechanical liquid distribution swinging metal wiper blades installed. During operation are the wiper blades due to the centrifugal force against the evaporator wall pressed, which is an even product distribution and an intense Liquid mixing of the liquid film causes.
- the thin film evaporator described in the introduction is not only intended to be the complete one Evaporation of evaporable components from a residue - for Example saline - ensure solution, but also the residues as one Provide pumpable mass that can be removed from the sump.
- a Thin film evaporator which works according to the principle described above however, this is not the case; because residues, for example salts, can accumulate in the Separate the area of the sump drain and form incrustations so that the Swamp discharge no longer easily removed due to blockages can be.
- the swamp drain is usually the tapered part - usually that part tapering to a tube - the sump through which the sump product is led away from the evaporator during discharge.
- the continuous operation of thin film evaporation must occur when such Blockages are set so that appropriate cleaning work can be initiated. Even when using others Evaporation devices, for example distillation columns, often occur same problems
- the object of the present invention was a device Provide with the liquid containing dissolved residues in one Evaporator can be separated without the sump drain the evaporation device is blocked by the residues. None should Cleaning work may be necessary which requires continuous evaporation would interrupt. Both the bottom product and the top product of the corresponding evaporation process should be as gentle as possible be preserved. The device should work effectively and inexpensively.
- the drain container is over Connecting lines directly to the drain valve, the flushing water valve, the tank drain valve, the flush drain valve and the vent valve connected.
- the drain container is usually above and below the collection container of the swamp.
- the flushing drain pipe can open into the sump drain, so that the Drain line device a common for detergent and sump product Has output.
- the drain line device is preferably in the form of two lines, a rinsing drain line and a sump drain line, trained so that sump and detergent separated, through different exits be dissipated.
- the evaporation device is mostly evacuated, since it is usually only under reduced evaporation gentle evaporation (then under lower Temperatures taking place) is possible. During the removal of Bottom product from the evaporator could therefore air through the Penetrate sump drain into the evaporator. According to the invention However, air can be prevented from entering the evaporator:
- These precautions are particularly useful to get through Introducing protective gas, for example nitrogen, the penetration of air (and to prevent oxygen from entering the apparatus. In this way can be in the top product or bottom product, sensitive to oxidation Protect fabrics.
- the collecting container is preferably connected to a pump. With this can the contents of the collecting container are circulated so that it remains homogeneous and the removal of residues is avoided.
- the evaporation device is a thin-film evaporator.
- the rinsing device according to the invention is particularly for the distillative Processing saline solutions used. This is usually the case for solutions that, in addition to the dissolved salts, also valuable products (often contain oxidation sensitive products). There are usually more Refurbishment steps necessary to obtain pure value products.
- the bottom outlet of the evaporator is with the help of the invention Flushing device rinsed periodically.
- a detergent is used in the residues contained are solved.
- the flushing device according to the invention is therefore preferably used to remove soluble residues.
- it can mechanical washing effects can also be effective, as the detergent has a certain Speed can hit the corresponding residues. So it is it is not absolutely necessary for the residues to be completely soluble in the detergent are.
- detergent in the top product of the evaporator can reach, it is recommended in In these cases, use a detergent that matches the quality of the head product and / or the further processing of the top product is not sustainable negative impaired.
- the bottom of the evaporator can be discharged pumped out after rinsing and mixing with the detergent (water) and stored.
- the detergent water
- this burned for example, in a residue incinerator, in a biological wastewater treatment plant, or (if valuable products are still contained) to be worked up further.
- This flushing device has one Drain line device (6, 16) on, in the form of two lines, one Flush drain line (6) and a sump drain line (16) is formed.
- the bottom product is first in one Drainage container 7 collected, which fills up gradually.
- the drain valve 10 is closed and the vacuum in the drain container 7 by opening the container drain valve 12 for Collection container 8 lifted (the collection container 8 is under normal pressure or slight overpressure).
- the vent valve 14 is opened, and the content of the drain container 7 runs into the collecting container 8.
- the content the collecting container 8 is expediently circulated by means of a pump 9, to keep it homogeneous and to prevent possible salt settling.
- the Content is used for intermediate storage and further use, for example the Combustion, continuously or discontinuously removed.
- the drain container 7 is rinsed. It is expedient to use this Water, preferably warm water or steam condensate.
- the container drain valve 12 are closed Flush drain valve 13 and the flush water valve 11 opened.
- the warm Rinse water which is supplied through the detergent feed pipe 13, now flows through the drain container 7 and is removed in this way Salt deposits.
- the rinsing process can (depending on the components it contains) for example, a biological sewage treatment plant. Rinsing time and Water flow are adjusted as required so that the required The amount of water is as small as necessary. As a rule, (depending on the load on the Evaporator and salinity) a rinsing time of 1 to 2 minutes sufficient.
- To blockages in the drain line to the collecting tank 8 avoid this line by opening the container drain valve 12 (instead of the flushing drain valve 13) flushed periodically. This is preferably done every 10 to 20 rinses.
- the rinse drain valve 13 is closed, and in further course of the rinsing phase, the water is via the drain tank 7 and the drain line through the vent line and through the vent valve 14 rinsed. Then the flushing water valve 11 is closed and around the To empty the drain container, the flushing drain valve 13 opened. The rest Flushing water is allowed to run off by opening the container drain valve 12. After that all valves are closed again.
- the drain container is evacuated again, and the cycle can begin again.
- the drain lines are to Collection container and for flushing detergent with inert gas flushing (usually Nitrogen purging). Inert gas is supplied via the Inlet pipes (4; 5).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Pipeline Systems (AREA)
Abstract
Description
- 1.
- Zulauf in den Verdampfungsapparat
- 2.
- Dampfstrom zur Beheizung des Mantels des Verdampfungsapparates
- 3.
- Einleitungsrohr für Spülmittel
- 4.
- Einleitungsrohr für Inertgas
- 5.
- Einleitungsrohr für Inertgas
- 6.
- Spülablaufleitung
- 7.
- Ablaufbehälter
- 8.
- Sammelbehälter
- 9.
- Pumpe
- 10.
- Ablaufventil
- 11.
- Spülwasserventil
- 12.
- Behälterablaufventil
- 13.
- Spülablaufventil
- 14.
- Entlüftungsventil
- 15.
- Kopfstrom des Verdampfungsapparates
- 16.
- Sumpfablaufleitung
- 17.
- aus dem Sumpf zum Ablaufventil führende Leitung
Claims (9)
- Spülvorrichtung zur Entfernung von Rückständen aus dem Sumpfablauf einer Kopfprodukt und Sumpfprodukt erzeugenden, mit einem Sumpfablauf ausgestatteten Verdampfungsvorrichtung, enthaltend:a) einen Ablaufbehälter (7),b) einen Sammelbehälter (8),c) ein Ablaufventil (10),d) ein Spülwasserventil (11),e) ein Behälterablaufventil (12),f) ein Spülablaufventil (13),g) ein Entlüftungsventil (14),h) eine aus dem Sumpf zum Ablaufventil (10) führende Leitung (17),i) ein Einleitungsrohr (3) für Spülmittel,j) eine Ablaufleitungs-Einrichtung (6, 16)
- Spülvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ablaufbehälter (7) über Verbindungsleitungen unmittelbar mit dem Ablaufventil (10), dem Spülwasserventil (11), dem Behälterablaufventil (12), dem Spülablaufventil (13) und dem Entlüftungsventil (14), verbunden ist.
- Spülvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ablaufbehälter (7) oberhalb des Sammelbehälters (8) und unterhalb des Sumpfes angeordnet ist.
- Spülvorrichtung nach einem der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß die Ablaufleitungs-Einrichtung (6, 16) in Form von zwei Leitungen, einer Spülablaufleitung (6) und einer Sumpfablaufleitung (16), ausgebildet ist.
- Spülvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein oder mehrere Einleitungsrohre für Inertgas (4; 5) in den Ablaufbehälter (7) und/oder in den Sammelbehälter (8) und/oder in Verbindungsleitungen zwischen den Einrichtungen a) bis j ) münden.
- Spülvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Sammelbehälter (8) mit einer Pumpe (9) verbunden ist.
- Spülvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Verdampfungsapparat ein Dünnschichtverdampfer ist.
- Spülvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Verdampfungsapparat evakuiert ist.
- Verwendung einer Spülvorrichtung nach einem der Ansprüche 1 bis 8 für die destillative Aufarbeitung salzhaltiger Lösungen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19855910 | 1998-12-03 | ||
DE19855910A DE19855910A1 (de) | 1998-12-03 | 1998-12-03 | Spülvorrichtung zur Entfernung von Rückständen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1005888A1 true EP1005888A1 (de) | 2000-06-07 |
EP1005888B1 EP1005888B1 (de) | 2005-09-14 |
Family
ID=7889920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99123942A Expired - Lifetime EP1005888B1 (de) | 1998-12-03 | 1999-12-03 | Spülvorrichtung zur Entfernung von Rückständen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6443170B1 (de) |
EP (1) | EP1005888B1 (de) |
JP (1) | JP2000197862A (de) |
CN (1) | CN1216697C (de) |
AT (1) | ATE304395T1 (de) |
DE (2) | DE19855910A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013164308A1 (de) * | 2012-05-04 | 2013-11-07 | Bayer Materialscience Ag | Verfahren zur behandlung eines ein aromatisches amin umfassenden stoffgemisches, insbesondere von roh-anilin |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10361003B3 (de) | 2003-12-23 | 2005-07-28 | Hte Ag The High Throughput Experimentation Company | Vorrichtung und Verfahren zur Druck- und Flusskontrolle in Parallelreaktoren |
DE102011109454A1 (de) * | 2011-08-04 | 2013-02-07 | Hte Aktiengesellschaft | Verfahren zur Behandlung von Produktfluidströmen |
JP6138253B2 (ja) | 2012-07-11 | 2017-05-31 | コベストロ、ドイチュラント、アクチエンゲゼルシャフトCovestro Deutschland Ag | イソシアネート製造において生じる蒸留残渣を処理する方法 |
JP6010457B2 (ja) * | 2012-12-28 | 2016-10-19 | 東京エレクトロン株式会社 | 液処理装置および薬液回収方法 |
US10345058B1 (en) | 2015-11-18 | 2019-07-09 | Gradiant Corporation | Scale removal in humidification-dehumidification systems |
US10513445B2 (en) | 2016-05-20 | 2019-12-24 | Gradiant Corporation | Control system and method for multiple parallel desalination systems |
CN115229187B (zh) * | 2021-10-29 | 2023-07-28 | 南京尚吉增材制造研究院有限公司 | 适用于制备多孔金属工艺中去除无机盐造孔剂的设备及去除方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5061348A (en) * | 1988-08-12 | 1991-10-29 | Alameda Instruments | Sulfuric acid reprocessor with continuous purge of second distillation vessel |
US5330624A (en) * | 1991-12-27 | 1994-07-19 | Phillips Petroleum Company | Fractionator-reboiler sludge removal system and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3046163A (en) * | 1960-04-06 | 1962-07-24 | Detrex Chem Ind | Method and apparatus for interiorly cleaning tanks and the like |
US3185661A (en) * | 1963-06-03 | 1965-05-25 | Phillips Petroleum Co | Particle agitation system |
US4770196A (en) * | 1986-02-13 | 1988-09-13 | Osswald Hannes E | Chemical cleaning system |
US5603826A (en) * | 1996-02-15 | 1997-02-18 | V Q Corporation | Return pump system for use with clean-in-place system for use with vessels |
US5690151A (en) * | 1996-04-02 | 1997-11-25 | Packaging Systems, Inc. | Dual channel bag filling machine with a clean-in-place system that cleans one channel while the other continues to fill bags |
-
1998
- 1998-12-03 DE DE19855910A patent/DE19855910A1/de not_active Withdrawn
-
1999
- 1999-12-01 US US09/451,858 patent/US6443170B1/en not_active Expired - Lifetime
- 1999-12-02 JP JP11376206A patent/JP2000197862A/ja active Pending
- 1999-12-03 AT AT99123942T patent/ATE304395T1/de not_active IP Right Cessation
- 1999-12-03 EP EP99123942A patent/EP1005888B1/de not_active Expired - Lifetime
- 1999-12-03 CN CN991159950A patent/CN1216697C/zh not_active Expired - Lifetime
- 1999-12-03 DE DE59912551T patent/DE59912551D1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5061348A (en) * | 1988-08-12 | 1991-10-29 | Alameda Instruments | Sulfuric acid reprocessor with continuous purge of second distillation vessel |
US5330624A (en) * | 1991-12-27 | 1994-07-19 | Phillips Petroleum Company | Fractionator-reboiler sludge removal system and method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013164308A1 (de) * | 2012-05-04 | 2013-11-07 | Bayer Materialscience Ag | Verfahren zur behandlung eines ein aromatisches amin umfassenden stoffgemisches, insbesondere von roh-anilin |
Also Published As
Publication number | Publication date |
---|---|
DE19855910A1 (de) | 2000-06-08 |
EP1005888B1 (de) | 2005-09-14 |
CN1260248A (zh) | 2000-07-19 |
CN1216697C (zh) | 2005-08-31 |
US6443170B1 (en) | 2002-09-03 |
ATE304395T1 (de) | 2005-09-15 |
DE59912551D1 (de) | 2005-10-20 |
JP2000197862A (ja) | 2000-07-18 |
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