WO2017105193A1 - Système de liquéfaction de gaz par condensation flash, refroidisseur cryogénique et échangeur de chaleur à plaques et ailettes de type bahx - Google Patents

Système de liquéfaction de gaz par condensation flash, refroidisseur cryogénique et échangeur de chaleur à plaques et ailettes de type bahx Download PDF

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Publication number
WO2017105193A1
WO2017105193A1 PCT/MX2015/000201 MX2015000201W WO2017105193A1 WO 2017105193 A1 WO2017105193 A1 WO 2017105193A1 MX 2015000201 W MX2015000201 W MX 2015000201W WO 2017105193 A1 WO2017105193 A1 WO 2017105193A1
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WO
WIPO (PCT)
Prior art keywords
gas
heat exchanger
fluid
expansion
plate
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.)
Ceased
Application number
PCT/MX2015/000201
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English (en)
Spanish (es)
Inventor
Martin VELEZ DE LA ROCHA
Cinthya Araceli RUIZ PARDO
Luz Mercedes OLIVAS DURAN
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/MX2015/000201 priority Critical patent/WO2017105193A1/fr
Publication of WO2017105193A1 publication Critical patent/WO2017105193A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04278—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using external refrigeration units, e.g. closed mechanical or regenerative refrigeration units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • F25J5/005—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger in a reboiler-condenser, e.g. within a column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/40—One fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F25J2270/908—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by regenerative chillers, i.e. oscillating or dynamic systems, e.g. Stirling refrigerator, thermoelectric ("Peltier") or magnetic refrigeration

Definitions

  • the present invention relates to the method and apparatus used for condensation of gases at cryogenic temperatures, combines the effects of a flash separator, a plate and fin heat exchanger and a very low temperature cooling system known as cryocooler.
  • WO2006124796A2 "GAS SEPARATION LIQUEFACTION MEANS AND PROCESSES"
  • the single or double column cryogenic gas separation devices are supplied by a Cryogenic chiller and by a throttling process of Joule-Thompson, where condensation of the gas can occur directly from the cold part of the cryogenic chiller that is perhaps located inside the thermally insulated space of the distillation column.
  • the system is particularly useful for medical applications, such as providing safe and economical high purity oxygen for home use.
  • the principles of the invention include a combined embodiment column of the simultaneous production of high purity liquid of oxygen and nitrogen gas.
  • Another double column design offers reduced temperature and pressure separation with ease of extraction between oxygen and nitrogen. If both gaseous and liquid oxygen are required, the purity should be approximately 95% that can be produced with a good recovery, that is, with the nitrogen purity of approximately 91%.
  • cryogenic air separation the cryogenic air separation system in gaseous nitrogen from a high pressure column and liquid oxygen from a low pressure column, each phase flowing in flow descending by the main heat exchanger; where the boiling of oxygen is avoided to prevent dryness inside the heat exchanger.
  • the main advantage of our invention is that it combines the cooling effects produced by the expansion of gases in an expansion chamber that functions as a flash condenser, with the effects of a cryocooler, whose cold focus is arranged in a heat exchanger located under the expansion chamber
  • the gas liquefaction industry conventionally uses turboexpansors to generate the cooling necessary to bring the gases to cryogenic temperatures.
  • FIGURES Figure 1 Shows a representation of the device for the partial or total condensation of a gas or a gas mixture (1); which is composed of a cryogenic container (10), inside which the heat exchanger is located of aluminum plates and fins (2) and the cryogenic cooler (3), both placed in vertical orientation.
  • the heat exchanger (3) has a set of open plates connected to an expansion chamber (8) located in its upper part; how much in addition to one or more sections of plates through which one or more cooling fluids flows;
  • the expansion devices (4) are placed for the entry of the gas mixture (1), which is sprayed evenly on the heat exchanger (2), once it has been expanded in the expansion chamber (8) located in the upper part of the heat exchanger itself (2).
  • the condensed fraction of the gas mixture flows through the walls of the heat exchanger (2) and is deposited in the lower part of the cryogenic container (10) which has a discharge outlet (7) located in its lower part.
  • Figure 2 It shows the graphic representation of the heat exchanger located inside the system container: in the upper part of the heat exchanger an expansion chamber (8) for the gas arrangement is placed, where the gas injection devices are placed (1) that they condense totally or partially and form a film or downward flow that flows inside the passages of the heat exchanger (2) and, against flow, the refrigerant gas circulates upwards.
  • the gas that is not partially condensed is condensed by the cryogenic cooler (3) that is located inside the heat exchanger (5).
  • the present invention is the improvement of a device for the condensation of gases at cryogenic temperatures.
  • the proposed equipment combines the cooling effects of a cryo-fan that can be of the Stiiiing, Gifford McMahon or Pulse Tube type; which has been mounted on a plate and fin heat exchanger in order to extend the cooling surface of the cold focus of the cryocooler.
  • the flow of pressurized feed gas enters a feed chamber located at the top of the heat exchanger.
  • One or more expansion devices are disposed in the chamber, where the gas is released, under conditions in which Joule Thompson effect cooling and partial condensation occur, whereby the upper chamber functions as a flash condenser; while the lower part of the plate exchanger, mechanically connected to the cold focus of the cryocooler, functions as a falling film condenser.
  • the described device will receive a pressurized gas inlet flow (1) that will be expanded by pressure decrease in valves or any other expansion device, and will have two outflows.
  • the equipment is contained in a tank to which a cryocooler has been connected.
  • the cold focus of this cryocooler is arranged inside the tank in which the components of the described equipment will be placed.
  • the temperature of this cold spot will be lower than the liquefaction temperature of the gas or mixture of gases to condense in the device.
  • the cold focus of the cryocooler will be inserted in a plate and fin heat exchanger constructed with high thermal conductance material, in order to extend the heat exchange surface; in this way a greater cooling surface will be available, with the ability to condense the gases entered into the device.
  • the plates and fins of this element will be placed in vertical orientation, so that the equipment functions as a falling film condenser.
  • an expansion chamber In the upper part of the heat exchange element, an expansion chamber will be located in which the pressurized gas injection device (s) will be placed.
  • the orifices or expansion valves arranged in that chamber will produce a sudden expansion or rapid reduction of the pressure of the fluid injected so that, in addition to cooling by the Joule Thompson effect, a partial condensation of the gas or gases entered will also be generated, operating said chamber as a flash condenser and, in the case of gas mixtures, as a flash separator.
  • a condensate gas downflow film is created, which is further cooled by the heat exchange between the condensed flow and the refrigerant flow. Mentioning gas which was not condensed by the flash separators, the gas comes into contact with the cryogenic cooler that is placed inside the plate and fin heat exchanger unit; when the gas is in contact and the condensation of the gas occurs with the cold focus of the cryocooler.
  • the benefits present in the invention obtaining the separation of the air with energy efficiency, greater obtaining of condensed air volume, use of a distillation tower of smaller size, compact design and reuse of waste gases from the separation process in towers of liquefaction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

La présente invention porte sur le perfectionnement d'un dispositif de séparation de gaz basé sur des séparateurs flash. La fonction principale est l'obention d'une dispersion homogène sur l'échangeur de chaleur avec les séparateurs flash afin d'obtenir un échange thermique amélioré entre les gouttes de condensat de gaz et les parois dudit échangeur. Le gaz non condensé est condensé à l'aide d'un refroidisseur cryogénique, donnant ainsi un volume de liquide. Ledit liquide est ensuite traité dans une colonne de distillation pour en vue de la séparation de ses composants.
PCT/MX2015/000201 2015-12-16 2015-12-16 Système de liquéfaction de gaz par condensation flash, refroidisseur cryogénique et échangeur de chaleur à plaques et ailettes de type bahx Ceased WO2017105193A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/MX2015/000201 WO2017105193A1 (fr) 2015-12-16 2015-12-16 Système de liquéfaction de gaz par condensation flash, refroidisseur cryogénique et échangeur de chaleur à plaques et ailettes de type bahx

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/MX2015/000201 WO2017105193A1 (fr) 2015-12-16 2015-12-16 Système de liquéfaction de gaz par condensation flash, refroidisseur cryogénique et échangeur de chaleur à plaques et ailettes de type bahx

Publications (1)

Publication Number Publication Date
WO2017105193A1 true WO2017105193A1 (fr) 2017-06-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MX2015/000201 Ceased WO2017105193A1 (fr) 2015-12-16 2015-12-16 Système de liquéfaction de gaz par condensation flash, refroidisseur cryogénique et échangeur de chaleur à plaques et ailettes de type bahx

Country Status (1)

Country Link
WO (1) WO2017105193A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6212904B1 (en) * 1999-11-01 2001-04-10 In-X Corporation Liquid oxygen production
US20040045315A1 (en) * 2002-07-01 2004-03-11 Tomoyoshi Kamoshita Method and device for producing oxygen
US20050274142A1 (en) * 2004-06-14 2005-12-15 Corey John A Cryogenically producing oxygen-enriched liquid and/or gaseous oxygen from atmospheric air
US20060026988A1 (en) * 2004-08-03 2006-02-09 Unger Reuven Z Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home use
WO2006124796A2 (fr) * 2005-05-18 2006-11-23 Respironics In-X, Inc. Procedes et moyens de liquefaction/separation de gaz
WO2010039369A2 (fr) * 2008-09-23 2010-04-08 Nellcor Puritan Bennett Llc Systèmes et procédés permettant de générer de l'oxygène liquide pour un usage portatif

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6212904B1 (en) * 1999-11-01 2001-04-10 In-X Corporation Liquid oxygen production
US20040045315A1 (en) * 2002-07-01 2004-03-11 Tomoyoshi Kamoshita Method and device for producing oxygen
US20050274142A1 (en) * 2004-06-14 2005-12-15 Corey John A Cryogenically producing oxygen-enriched liquid and/or gaseous oxygen from atmospheric air
US20060026988A1 (en) * 2004-08-03 2006-02-09 Unger Reuven Z Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home use
WO2006124796A2 (fr) * 2005-05-18 2006-11-23 Respironics In-X, Inc. Procedes et moyens de liquefaction/separation de gaz
WO2010039369A2 (fr) * 2008-09-23 2010-04-08 Nellcor Puritan Bennett Llc Systèmes et procédés permettant de générer de l'oxygène liquide pour un usage portatif

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