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FR2414350A1 - Dehumidifying industrial waste gases by two=stage cooling - in which gases issuing from second stage are reheated by cooling fluid heated in first stage - Google Patents

Dehumidifying industrial waste gases by two=stage cooling - in which gases issuing from second stage are reheated by cooling fluid heated in first stage

Info

Publication number
FR2414350A1
FR2414350A1 FR7801302A FR7801302A FR2414350A1 FR 2414350 A1 FR2414350 A1 FR 2414350A1 FR 7801302 A FR7801302 A FR 7801302A FR 7801302 A FR7801302 A FR 7801302A FR 2414350 A1 FR2414350 A1 FR 2414350A1
Authority
FR
France
Prior art keywords
gases
stage
cooling
heat
auxiliary fluid
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
Application number
FR7801302A
Other languages
French (fr)
Other versions
FR2414350B1 (en
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.)
LAB SAS
Original Assignee
LAB SAS
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 LAB SAS filed Critical LAB SAS
Priority to FR7801302A priority Critical patent/FR2414350A1/en
Publication of FR2414350A1 publication Critical patent/FR2414350A1/en
Application granted granted Critical
Publication of FR2414350B1 publication Critical patent/FR2414350B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Gases (AREA)

Abstract

The water vapour contained in the gases is condensed out in two successive cooling stages using an auxiliary fluid in heat exchangers. The hot fluid produced in the first cooling stage is used to warm up the gases before their reuse or discharge to atmosphere. Pref. additional hot air is added to the gases after treatment, this air being heated either by heat exchange with the auxiliary fluid after it has been used to heat the gases again, or by using the air as the cooling fluid in the second stage heat exchanger. Dust and any liq. particles can be removed from the gases before reheating by, e.g. electrostatic precipitation. A heat pump may be used to transfer heat to and from different parts of the auxiliary fluid circuit, or even from the gases direct. The system can be used with industrial waste gases such as combustion gases, enabling their discharge to the atmosphere without the formation of clouds of water droplets and dust. The consumptions of auxiliary fluid and of energy are much smaller than with conventional systems.
FR7801302A 1978-01-12 1978-01-12 Dehumidifying industrial waste gases by two=stage cooling - in which gases issuing from second stage are reheated by cooling fluid heated in first stage Granted FR2414350A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7801302A FR2414350A1 (en) 1978-01-12 1978-01-12 Dehumidifying industrial waste gases by two=stage cooling - in which gases issuing from second stage are reheated by cooling fluid heated in first stage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7801302A FR2414350A1 (en) 1978-01-12 1978-01-12 Dehumidifying industrial waste gases by two=stage cooling - in which gases issuing from second stage are reheated by cooling fluid heated in first stage

Publications (2)

Publication Number Publication Date
FR2414350A1 true FR2414350A1 (en) 1979-08-10
FR2414350B1 FR2414350B1 (en) 1983-10-28

Family

ID=9203575

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801302A Granted FR2414350A1 (en) 1978-01-12 1978-01-12 Dehumidifying industrial waste gases by two=stage cooling - in which gases issuing from second stage are reheated by cooling fluid heated in first stage

Country Status (1)

Country Link
FR (1) FR2414350A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682990A (en) * 1982-01-29 1987-07-28 Granges Aluminium Aktiebolag Method and apparatus for cleaning watery ventilating air containing liquids which have been gasified during cooling or lubrication of converting machines, particularly rolling mills
US4750916A (en) * 1986-02-06 1988-06-14 Flakt Ab Method and arrangement for cleansing a flow of hot contaminated gas
WO1998003248A1 (en) * 1996-07-22 1998-01-29 Flair Corporation Apparatus and method for removing condensable material
WO2007041804A1 (en) * 2005-10-13 2007-04-19 Thermoelectric Applications Pty Ltd A method and apparatus for extracting water from air containing moisture

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584421A (en) * 1967-09-09 1969-12-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584421A (en) * 1967-09-09 1969-12-19

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682990A (en) * 1982-01-29 1987-07-28 Granges Aluminium Aktiebolag Method and apparatus for cleaning watery ventilating air containing liquids which have been gasified during cooling or lubrication of converting machines, particularly rolling mills
US4750916A (en) * 1986-02-06 1988-06-14 Flakt Ab Method and arrangement for cleansing a flow of hot contaminated gas
WO1998003248A1 (en) * 1996-07-22 1998-01-29 Flair Corporation Apparatus and method for removing condensable material
WO2007041804A1 (en) * 2005-10-13 2007-04-19 Thermoelectric Applications Pty Ltd A method and apparatus for extracting water from air containing moisture

Also Published As

Publication number Publication date
FR2414350B1 (en) 1983-10-28

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Legal Events

Date Code Title Description
ST Notification of lapse