US3735808A - Heat-exchanger for desalting sea water - Google Patents

Heat-exchanger for desalting sea water Download PDF

Info

Publication number
US3735808A
US3735808A US00158826A US3735808DA US3735808A US 3735808 A US3735808 A US 3735808A US 00158826 A US00158826 A US 00158826A US 3735808D A US3735808D A US 3735808DA US 3735808 A US3735808 A US 3735808A
Authority
US
United States
Prior art keywords
heat
exchanger
partition
hollow member
tubes
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.)
Expired - Lifetime
Application number
US00158826A
Other languages
English (en)
Inventor
D Barba
G Liuzzo
G Tagliaferri
A Rome Germana
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societa Italiana Resine SpA SIR
Original Assignee
Societa Italiana Resine SpA SIR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societa Italiana Resine SpA SIR filed Critical Societa Italiana Resine SpA SIR
Application granted granted Critical
Publication of US3735808A publication Critical patent/US3735808A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/06—Flash evaporation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/06—Flash distillation
    • B01D3/065—Multiple-effect flash distillation (more than two traps)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2230/00—Sealing means
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/42—Seals

Definitions

  • ABSTRACT The heat-exchanger tubes of instantaneous evaporators for providing fresh water from saline formed into a unitary nest by transverse supports corresponding in position with the walls dividing off successive chambers of the evaporator and in shape with holes provided in those walls.
  • a plurality of instantaneous expansion chambers are provided which are connected in series and which operate at decreasing pressures.
  • evaporators are obtained by subdividing the space enclosed by an outer shell by means of vertical baffles which extend in the transverse direction of the shell.
  • the saline solution under evaporation is caused to flow through the chambers in the direction of diminishing pressure through passages of a particular shape, known as mouths, provided in the baffles.
  • the vapor formed condenses on nests of heatexchanger tubes which longitudinally traverse the entire length of the evaporator and the condensate is collected so that it cannot comein contact with the saline solution.
  • the sea-water is pre-heated before being introduced into the chambers by causing it to pass as cooling liquid through heat-exchanger tubes.
  • the object of the present invention is an improvement relating to instantaneous multiple expansion evaporators, the said improvement making it easily, economically and particularlyadvantageously possible to achieve a high degree of leakproofness between the various chambers of the evaporators themselves, avoiding the above-described drawbacks.
  • the individual tubes are no longer each caused to traverse a corresponding hole provided for the purpose in the wall of the dividing baffle; instead, the entire nest of tubes is rendered rigid with a hollow cylinder which is then passed through a single hole provided in the separating baffle so that a high degree of tightness is achieved between the cylinder and the hole.
  • Each tube of the nest is located in apertures predisposed in the circular walls of the cylinderand there-- fore rendered rigid with'the cylinder itself.
  • the tubes are rendered rigid with the cylinder by means of a plastics material which fills the cavity inside the cylinder.
  • plastics materials particularly useful for the purpose are the polyolefines such as polyethylene and poly-propylene, polypropylene being preferred.
  • the diameter of such a cylinder is slightly greater than that of the nest of tubesand its height is a little greater than the thickness of the separating baffle.
  • the tightness between one chamber and the next is considerably improved, so that in the interior there are more regular temperature and pressure levels and hence a greater efficiency in the multiple expansion instantaneous evaporators.
  • this is influenced by the fact that the linear development of the zone of tightness of the cylinder is considerably less than the sum of the linear developments of the zones of tightness which be necessary for each tube of the nest if each tube were so applied directly to the baffle.
  • the improvement which is achieved by the invention makes it possible to carry out this operation far more rapidly and easily in that the nest of tubes is withdrawn en bloc by a single series of operations without its being necessary to repeat the same operations every time for each tube in the nest.
  • a greatly simplified form of implementing the improvement of the present invention as an alternative to the foregoing resides in welding the tubes into the holes in a single plate having edges smoothed so that when the said plate is subsequently fitted into the hole in the baffle, it is possible to achieve a high degree of leakproofness.
  • the attached drawing shows a longitudinal section through a preferred embodiment of the improvement according to the present invention.
  • a nest of tubes 1 passes between two subsequent chambers through the hole in the dividing baffle 4 through the agency of a cylinder 2 with which the tubes are rendered rigid by the plastics material 3 which fills the cavity in the cylinder.
  • the cylinder 2 is shaped so that a high degree of leakproofness can be obtained in the proximity of the hole in the dividing baffle 4. In any case, complete tightness may be obtained by using a single annularly disposed seal or leakproofing system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
US00158826A 1970-07-01 1971-07-01 Heat-exchanger for desalting sea water Expired - Lifetime US3735808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2684670 1970-07-01

Publications (1)

Publication Number Publication Date
US3735808A true US3735808A (en) 1973-05-29

Family

ID=11220357

Family Applications (1)

Application Number Title Priority Date Filing Date
US00158826A Expired - Lifetime US3735808A (en) 1970-07-01 1971-07-01 Heat-exchanger for desalting sea water

Country Status (8)

Country Link
US (1) US3735808A (enrdf_load_stackoverflow)
JP (1) JPS5227859Y2 (enrdf_load_stackoverflow)
CH (1) CH525842A (enrdf_load_stackoverflow)
DE (1) DE2132603A1 (enrdf_load_stackoverflow)
FR (1) FR2098138A5 (enrdf_load_stackoverflow)
GB (1) GB1304977A (enrdf_load_stackoverflow)
NL (1) NL7109086A (enrdf_load_stackoverflow)
YU (1) YU35841B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004984A (en) * 1975-02-07 1977-01-25 Aktiebolaget Atomenergi Distillation plant
CN108562173A (zh) * 2018-04-09 2018-09-21 江苏安邦电化有限公司 三氯化磷冷凝器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323987A1 (de) * 1983-07-02 1985-01-10 Balcke-Dürr AG, 4030 Ratingen Mehrstufiger waermetauscher

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174914A (en) * 1959-01-19 1965-03-23 Bethlehem Steel Corp Tandem flash distilling plant
US3324941A (en) * 1964-01-02 1967-06-13 Carrier Corp Heat exchanger with expansible tube seal
US3632481A (en) * 1970-02-13 1972-01-04 Roland P Hammond Critical velocity, uninterruptedly flowing brine in multistage distillation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174914A (en) * 1959-01-19 1965-03-23 Bethlehem Steel Corp Tandem flash distilling plant
US3324941A (en) * 1964-01-02 1967-06-13 Carrier Corp Heat exchanger with expansible tube seal
US3632481A (en) * 1970-02-13 1972-01-04 Roland P Hammond Critical velocity, uninterruptedly flowing brine in multistage distillation system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004984A (en) * 1975-02-07 1977-01-25 Aktiebolaget Atomenergi Distillation plant
CN108562173A (zh) * 2018-04-09 2018-09-21 江苏安邦电化有限公司 三氯化磷冷凝器
CN108562173B (zh) * 2018-04-09 2023-09-29 安道麦安邦(江苏)有限公司 三氯化磷冷凝器

Also Published As

Publication number Publication date
NL7109086A (enrdf_load_stackoverflow) 1972-01-04
JPS5233644U (enrdf_load_stackoverflow) 1977-03-09
FR2098138A5 (enrdf_load_stackoverflow) 1972-03-03
JPS5227859Y2 (enrdf_load_stackoverflow) 1977-06-24
CH525842A (it) 1972-07-31
GB1304977A (enrdf_load_stackoverflow) 1973-01-31
YU171971A (en) 1981-02-28
DE2132603A1 (de) 1972-01-05
YU35841B (en) 1981-08-31

Similar Documents

Publication Publication Date Title
US3227630A (en) Flexible thin-walled tubular heat exchanger and still
US4624747A (en) Process for the distillation of fresh water from sea water
US3941663A (en) Multi-effect evaporator
US3768539A (en) Modular arrangement of falling film multiple effect evaporator
US3182719A (en) Multitubular heat exchanger
GB1312292A (en) Evaporators
US2995341A (en) Feed water heater sub-cooling zone
US3590912A (en) Vertical staggered surface feedwater heater
GB1178031A (en) Improvements in and relating to Multiple-Effect Falling-Film Evaporators
US3735808A (en) Heat-exchanger for desalting sea water
US3868308A (en) Multieffect evaporator
US3251397A (en) Multiple effect evaporator of the single horizontal body, nested shell type
US3174914A (en) Tandem flash distilling plant
SU1075946A3 (ru) Устройство дл опреснени морской воды
US3241598A (en) Method and apparatus for evaporating liquids
US3096256A (en) Multistage flash distilling plant
US3797552A (en) Multiple effect evaporators
GB1175157A (en) Improvements in or relating to Steam Condensers
US3348610A (en) Heat exchangers for cooling fresh cracked gases or the like
US3281334A (en) Multistage evaporator construction
GB2160117A (en) Apparatus for the distillation of fresh water from sea water
US3489650A (en) Modular unit assembly for multi-stage flash distillation
US3797566A (en) Heat exchanger
EP0212011B1 (en) Multistage evaporation boiling equipment
GB855550A (en) Improvements in or relating to evaporators