GB2039774A - A Process and an Apparatus for the Pyrohydrolytic Decomposition of Organic Substances Containing Halogens and/or Phosphorus - Google Patents
A Process and an Apparatus for the Pyrohydrolytic Decomposition of Organic Substances Containing Halogens and/or Phosphorus Download PDFInfo
- Publication number
- GB2039774A GB2039774A GB7943906A GB7943906A GB2039774A GB 2039774 A GB2039774 A GB 2039774A GB 7943906 A GB7943906 A GB 7943906A GB 7943906 A GB7943906 A GB 7943906A GB 2039774 A GB2039774 A GB 2039774A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluidised bed
- organic substances
- steam
- calcium
- decomposition
- 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.)
- Withdrawn
Links
- 239000000126 substance Substances 0.000 title claims abstract description 19
- 229910052736 halogen Inorganic materials 0.000 title claims abstract description 7
- 150000002367 halogens Chemical class 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 23
- 238000000354 decomposition reaction Methods 0.000 title claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title description 6
- 229910052698 phosphorus Inorganic materials 0.000 title description 6
- 239000011574 phosphorus Substances 0.000 title description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011575 calcium Substances 0.000 claims abstract description 9
- 239000000292 calcium oxide Substances 0.000 claims abstract description 9
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims abstract description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 150000002681 magnesium compounds Chemical class 0.000 claims abstract description 6
- 229940043430 calcium compound Drugs 0.000 claims abstract description 4
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 3
- 239000002912 waste gas Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 14
- 235000012255 calcium oxide Nutrition 0.000 abstract description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 6
- 235000011116 calcium hydroxide Nutrition 0.000 abstract description 3
- 238000012958 reprocessing Methods 0.000 abstract description 3
- 239000003758 nuclear fuel Substances 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 9
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- -1 calcium halide Chemical class 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008263 liquid aerosol Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/14—Processing by incineration; by calcination, e.g. desiccation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/32—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with introduction into the fluidised bed of more than one kind of moving particles
Abstract
Organic substances containing halogens and/or phosphoric acid which accumulate in contaminated form, particularly in the reprocessing of nuclear fuels, are decomposed at 300 to 800 DEG C in a steam-operated fluidised bed consisting of granular basic aluminium and/or calcium and/or magnesium compounds. The bed is preferably formed of Ca(OH)2/CaO granulate, although aluminium oxide or burnt lime may also be used. <IMAGE>
Description
SPECIFICATION
A Process and an Apparatus for the
Pyrohydrolytic Decomposition of Organic
Substances Containing Halogens and/or
Phosphorus
This invention relates to a process and an apparatus for the pyrohydrolytic decomposition of
organic substances particularly contaminated organic substances, containing halogens (Cl, F, Br,
I) and/or phosphorus.
In the nuclear field, there are a number of contaminated organic solvents and extractants which have to beeliminated. In particular, fissile products have to be able to be safely isolated from contaminated solutions of the type accumulating in the reprocessing of spent nuclear fuels and to be able to be brought into a form in which they can be permanently stored. This applies above all to the highly active reprocessing extractant of which 30% consists of tributyl phosphate (TBP) and dodecane. However, it is also necessary in the conventional sector to be able to dispose of waste products of chlorinated and fluorinated solvents which cannot be burnt and which, at high temperatures, form highly corrosive hydrochloric acid or hydrofluoric acid.
Whereas in the radioactive sector intermediate storage has hitherto been essential, it has only been possible in the conventional sector to eliminate these waste products by burning them at sea which inevitably gives rise to pollution problems.
Although there is already a process for the pyrohydrolytic incineration of contaminated organic solid waste (German Offenlegungsschrift
No. 2,641,264), this process is unsuitable for halogenated, particularly fluorinated, organic substances on account of the formation of highly corrosive hydrofluoric acid. Neither can TBP be reacted in this way because, in this case, free phosphoric acid is formed.
A special process has been described for the elimination of TBP (cf. British Patent No.
1,517,014). In this process, the TBP is first separated from the dodecane with phosphoric acid (adduct process), after which the adduct is decomposed at 1 800C into phosphoric acid and butene. The butene is burnt, the highly active phosphoric acid is precipitated with milk of lime and the calcium phosphate formed is embedded in concrete for permanent storage. In this process, the addition of fresh phosphoric acid results in the formation of additional waste, so that it has not yet been possible successfully to apply this process in practice.
Accordingly, an object of the present invention is to provide a process and an apparatus for the pyrohydrolytic decomposition of organic substances, particularly contaminated organic substances, containing halogen and/or phosphorus with which it is possible to eliminate any mixtures of organic substances without previous separation and without any concern for corrosive secondary products in such a way that only inactive waste gases and a readily reprocessible inorganic product including the fissile products are formed.
According to the invention the substances are introduced at a temperature of 300 to 8000C into a steam-operated fluidised bed consisting of granular basic aluminium and/or calcium and/or magnesium compounds. The inorganic acids liberated, such as hydrofluoric acid and phosphoric acid for example, form solid salts with the calcium, the magnesium or the aluminium.
Hydrochloric acid formed during pyrohydrolysis may also be retained at low temperatures, although it may also be eliminated in the form of
HCI at relatively high temperatures, which is of advantage in some cases. The waste gases from this process are oxidised with oxygen or air at round 1 0000C, preferably in a post-combustion chamber, so that after the separation of hydrochloric acid in a following alkaline washer only carbon dioxide is left over as waste gas following condensation of the steam.
A granulate of calcium oxide and/or calcium hydroxide is preferably used for the fluidised bed, although aluminium oxide or burnt limestone for example may also be used.
The process according to the invention for the pyrohydrolytic decomposition of organic substances containing halogens and/or phosphorus is an endothermic process.
Accordingly, it may be very effectively controlled.
Hardly any liquid aerosols which could reduce activity are formed, instead only inactive gases are formed. The fissile products are included in the aluminium and/or calcium and/or magnesium compounds formed.
The process according to the invention is
preferably carried out in an apparatus which
comprises a fluidised bed furnace with or without
a stirrer.
Accordingly the present invention also provides
an apparatus comprising a fluidised bed furnace,
having a granulate or a basic aluminium and/or
calcium and/or magnesium compound as the
fluidised bed with steam being used as the
fluidising gas. The accompanying drawing
diagrammatically illustrates one such apparatus.
An organic liquid to be decomposed is
introduced into a fluidised bed 3 in a fluidised-bed
furnace 2 through a feed pipe 1 at a temperature
of from 300 to 8000 C. The required reaction
temperature is obtained through a heating jacket
9 and superheated steam introduced through a feed pipe 5. The fluidised bed is preferably formed
by Ca (OH)2/CaO granulate, steam being used as the fluidising gas. The quantity of organic
substances introduced is determined by the
amount of steam and the molar ratio of steam to
hydrolysable bond in the organic substance
should not fall below 2:1. After the CaO has been
converted into calcium phosphate or calcium
halide, the contents of the bed may be left off
through a pipe 4.The waste gas consisting
essentially of steam, hydrocarbons, carbon
monoxide and carbon dioxide passes through reversible filter candles 6 and is burnt with excess oxygen, preferably in anafter-burner 7, to form water and CO2. A following washer 8 operates at approximately 1 000C/pH 5, any hydrochloric acid formed being absorbed whilst CO2 and steam can escape. After aerosols have been retained on a deep-bed fibre filter 10, the steam present in the waste gases is condensed and returned to the fluidised-bed furnace.
The process according to the invention is illustrated by the following Examples:
Example 1
60 kg of CaO granulate are contained in a fluidised-bed furnace at a temperature of 4000 C.
Steam superheated to 4000C (50 m3n/h) is used as the fluidising gas.
A TBP/kerosene (30/70)-mixture contaminated with highly enriched uranium is sprayed in below the fluidised bed in a quantity of 1 5 kg/h. 33 m3n/h of oxygen are fed into the after-burner operated at 1 0000C in order completely to react the waste-gases to form CO2 and H2O. After running for 36 hours, the fluidised bed is exhausted and no longer capable of binding phosphorus from the TBP in the form of phosphate. It has to be run off.The recycle water of the washer is found to contain only 0.02% of the activity fed into the fluidised bed, whereas in the waste gas outlet the radiometric measurements lie in the region of the zero level.m
Example 2
60 kg of CaO granulate are introduced into a fluidised bed furnace at a temperature of from 500 to 8000C. 50 m3n/h of superheated steam are introduced as the fluidising gas. 50 kg/h of fluorinated hydrocarbon (C2F2CI4) contaminated with highly enriched uranium are introduced below the fluidised bed.
For 12 hours, the CaO in the fluidised bed is capable of binding the fluorine released from the fluorinated hydrocarbon in the form of calcium fluoride. The hydrogen chloride released is not bound at these reaction temperatures, but instead escapes through the after-burner into the washer operated at pH 5 in which the HCI is absorbed, whilst the CO2 formed in the after-burner passes through the washer. The after-burner is operated
with 4m3n/h of oxygen at a temperature of 10000 C.
The recycle water of the washer contains,
0.03% of the activity fed into the fluidised bed.
The purified exhaust gas merely contains activity
in the region of the zero level.
Claims (9)
1. A process for the pyrohydrolytic decomposition of organic substances containing
halogens and/or phosphorous, which comprises introducing the substances at a temperature of from 300 to 8000C into a steam-operated fluidised bed consisting of granuiar basic aluminium and/or calcium and/or magnesium compounds.
2. A process as claimed in Claim 1, wherein the fluidised bed consists of calcium oxide and/or calcium hydroxide granulate.
3. A process as claimed in Claim 1 or 2, wherein the waste gases from the fluidised bed are burnt at about 1 0000C and washed with water at pH 5.
4. A process as claimed in any of Claims 1 to 3, wherein the condensed steam in the waste gases is returned to the fluidised bed.
5. A process as claimed in any of Claims 1 to 4, wherein at most 0.5 mole of organic substance divided by the number of pyrohydrolysable bonds in the molecule of the particular substance is introduced per mole of steam used.
6. A process for the pyrohydrolytic decomposition of organic substances substantially as desecribed with particular reference to any of the Examples.
7. An apparatus for carrying out the process claimed in any of Claims 1 to 5, comprising a fluidised bed furnace, having a granulate of a basic aluminium and/or calcium and/or magnesium compound as the fluidised bed with steam being used as the fluidising gas.
8. An apparatus as claimed in Claim 7, wherein an after-burner, a washer and a filter are connected to the fluidised bed furnace.
9. An apparatus for the pyrolytic decomposition of organic substances substantially as described with particular reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2855650A DE2855650C2 (en) | 1978-12-22 | 1978-12-22 | Process for the pyrohydrolytic decomposition of phosphorus-containing liquids contaminated with highly enriched uranium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2039774A true GB2039774A (en) | 1980-08-20 |
Family
ID=6058106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7943906A Withdrawn GB2039774A (en) | 1978-12-22 | 1979-12-20 | A Process and an Apparatus for the Pyrohydrolytic Decomposition of Organic Substances Containing Halogens and/or Phosphorus |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5587099A (en) |
| BE (1) | BE880783A (en) |
| BR (1) | BR7908390A (en) |
| DE (1) | DE2855650C2 (en) |
| FR (1) | FR2444496A1 (en) |
| GB (1) | GB2039774A (en) |
| IT (1) | IT7968951A0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10593437B2 (en) | 2015-01-30 | 2020-03-17 | Studsvik, Inc. | Methods for treatment of radioactive organic waste |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410126A (en) * | 1978-10-12 | 1983-10-18 | Cooper Industries, Inc. | Mass soldering system |
| DE3028193C2 (en) * | 1980-07-25 | 1984-11-22 | Nukem Gmbh, 6450 Hanau | Method and device for the pyrolytic decomposition of halogens and / or phosphorus-containing organic substances |
| CA1163431A (en) * | 1982-08-20 | 1984-03-13 | Atomic Energy Of Canada Limited - Energie Atomique Du Canada, Limitee | Method of reducing the volume of radioactive waste |
| JPS59107300A (en) * | 1982-12-10 | 1984-06-21 | 株式会社日立製作所 | Method of processing radioactive resin waste |
| DE3443722A1 (en) * | 1984-11-30 | 1986-06-12 | Foerster Guenther | Process for the thermal disposal of halogen compounds, in particular wastes containing chlorine compounds forming dioxins, phosgene and polychlorinated biphenyls and fluidised-bed reactor for carrying it out |
| DE3447337C2 (en) * | 1984-12-24 | 1986-11-06 | Nukem Gmbh, 6450 Hanau | Process for the chemical-thermal decomposition of higher halogenated hydrocarbons |
| DE3604318C2 (en) * | 1986-02-12 | 1994-01-13 | Metallgesellschaft Ag | Process for burning cow dung |
| CA1294111C (en) * | 1986-08-08 | 1992-01-14 | Douglas J. Hallett | Process for the destruction of organic waste material |
| JPS63171398A (en) * | 1987-01-09 | 1988-07-15 | 日本碍子株式会社 | Method and device for processing radioactive waste |
| DE4021309A1 (en) * | 1989-09-01 | 1991-03-07 | Delta T Ingenieurtechnik & App | Process thermally breaking down chemical and treating toxic residues - has number of indirectly heated fluidised bed incinerators used in series to provide efficient disposal of harmful chemicals |
| JPH04115390U (en) * | 1991-03-29 | 1992-10-13 | アイワ株式会社 | Electronics |
| DE4118123A1 (en) * | 1991-06-03 | 1992-12-10 | Siemens Ag | METHOD AND DEVICE FOR TREATING A RADIOACTIVE WASTE SOLUTION |
| DE102015115119A1 (en) * | 2015-09-09 | 2017-03-09 | Wehrle-Werk Ag | Process for phosphorus recovery |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE562779A (en) * | 1956-11-30 | |||
| FR1495622A (en) * | 1966-08-12 | 1967-09-22 | Commissariat Energie Atomique | Fluorinated organic liquids incineration process |
| DE2056096B2 (en) * | 1970-11-14 | 1978-09-28 | Metallgesellschaft Ag, 6000 Frankfurt | Process for the separation of hydrogen fluoride from gases |
| US3907674A (en) * | 1974-04-24 | 1975-09-23 | Dorr Oliver Inc | Fluid bed incineration of wastes containing alkali metal chlorides |
| BE819818A (en) * | 1974-09-12 | 1974-12-31 | METHOD OF TREATING ORGANIC WASTE | |
| DE2641264C2 (en) * | 1976-09-14 | 1982-07-22 | Nukem Gmbh, 6450 Hanau | Process for the treatment of radioactively contaminated organic waste |
-
1978
- 1978-12-22 DE DE2855650A patent/DE2855650C2/en not_active Expired
-
1979
- 1979-10-08 IT IT7968951A patent/IT7968951A0/en unknown
- 1979-12-20 GB GB7943906A patent/GB2039774A/en not_active Withdrawn
- 1979-12-20 BR BR7908390A patent/BR7908390A/en unknown
- 1979-12-20 BE BE6/47043A patent/BE880783A/en unknown
- 1979-12-21 FR FR7931513A patent/FR2444496A1/en not_active Withdrawn
- 1979-12-21 JP JP16577979A patent/JPS5587099A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10593437B2 (en) | 2015-01-30 | 2020-03-17 | Studsvik, Inc. | Methods for treatment of radioactive organic waste |
Also Published As
| Publication number | Publication date |
|---|---|
| BE880783A (en) | 1980-06-20 |
| IT7968951A0 (en) | 1979-10-08 |
| JPS5587099A (en) | 1980-07-01 |
| DE2855650A1 (en) | 1980-07-17 |
| FR2444496A1 (en) | 1980-07-18 |
| BR7908390A (en) | 1980-10-07 |
| DE2855650C2 (en) | 1984-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |