ES475453A1 - Purifying waste gases from nuclear reprocessing plants - Google Patents

Purifying waste gases from nuclear reprocessing plants

Info

Publication number
ES475453A1
ES475453A1 ES475453A ES475453A ES475453A1 ES 475453 A1 ES475453 A1 ES 475453A1 ES 475453 A ES475453 A ES 475453A ES 475453 A ES475453 A ES 475453A ES 475453 A1 ES475453 A1 ES 475453A1
Authority
ES
Spain
Prior art keywords
column
iodine
flow
hyper
counter
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
Application number
ES475453A
Other languages
Spanish (es)
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.)
Forschungszentrum Karlsruhe GmbH
Original Assignee
Kernforschungszentrum Karlsruhe GmbH
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 Kernforschungszentrum Karlsruhe GmbH filed Critical Kernforschungszentrum Karlsruhe GmbH
Publication of ES475453A1 publication Critical patent/ES475453A1/en
Expired 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/02—Treating gases

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Treating Waste Gases (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

In the purification of waste gases containing nitric oxides, iodine and iodine compounds and triturated water vapour from a nuclear reprocessing plant, hyper-azeotropic nitric acid is introduced at the head (6) of a counter-current gas/liquid contact column (4) and then conducted through a co-current contact column (1) where it is cooled to a temperature of up to -65 DEG C. Waste gas to be purified (22) is introduced into the head of column (1), and thence follows the path (23), (24) and (7). Organic iodine compounds and iodine are partially oxidised, in the cooler lower part of column (1), while in the warmer upper region of column (1) a proportion of the NO oxidised by the hyper-azeotropic nitric acid to NO2. NO2, iodine and water vapour are substantially absorbed by the hyper- azeotropic nitric acid during the subsequent passage through the counter-flow column (4). The flow ratio V=G/F of gas flow G and liquid flow F at any point of the counter-flow column is smaller than the iodine distribution coefficient D (G/F), (c, T), whereby c is the iodine concentration and T the temperature.
ES475453A 1978-01-03 1978-11-28 Purifying waste gases from nuclear reprocessing plants Expired ES475453A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782800120 DE2800120C2 (en) 1978-01-03 1978-01-03 Process for cleaning the exhaust gases of a reprocessing plant for irradiated nuclear fuel

Publications (1)

Publication Number Publication Date
ES475453A1 true ES475453A1 (en) 1979-05-16

Family

ID=6028890

Family Applications (1)

Application Number Title Priority Date Filing Date
ES475453A Expired ES475453A1 (en) 1978-01-03 1978-11-28 Purifying waste gases from nuclear reprocessing plants

Country Status (6)

Country Link
BE (1) BE872333A (en)
BR (1) BR7900005A (en)
DE (1) DE2800120C2 (en)
ES (1) ES475453A1 (en)
FR (1) FR2413760A1 (en)
GB (1) GB2015486B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10048913B4 (en) * 2000-10-04 2005-03-24 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg Detachable connection element for a component, with a screw part and a retaining ring
EP2747877A4 (en) * 2011-08-22 2016-01-13 Linde Ag Improved nitric acid production

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752876A (en) * 1971-08-26 1973-08-14 Atomic Energy Commission Removal of organic and inorganic iodine from a gaseous atmosphere
JPS565960B2 (en) * 1972-12-27 1981-02-07
FR2277415A1 (en) * 1974-07-03 1976-01-30 Commissariat Energie Atomique PROCESS FOR THE EXTRACTION, TRAPPING AND STORAGE OF RADIOACTIVE IODINE CONTAINED IN IRRADIED NUCLEAR FUELS
DE2759185C2 (en) * 1977-12-31 1983-11-10 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Method for cleaning the exhaust gases of a reprocessing plant for irradiated nuclear fuel and device for carrying out the method

Also Published As

Publication number Publication date
BR7900005A (en) 1979-08-07
FR2413760A1 (en) 1979-07-27
BE872333A (en) 1979-03-16
FR2413760B1 (en) 1982-10-22
GB2015486A (en) 1979-09-12
DE2800120A1 (en) 1979-07-05
GB2015486B (en) 1982-06-03
DE2800120C2 (en) 1983-10-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971201