FR2520545A1 - Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nuclaire - Google Patents
Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nuclaire Download PDFInfo
- Publication number
- FR2520545A1 FR2520545A1 FR8201249A FR8201249A FR2520545A1 FR 2520545 A1 FR2520545 A1 FR 2520545A1 FR 8201249 A FR8201249 A FR 8201249A FR 8201249 A FR8201249 A FR 8201249A FR 2520545 A1 FR2520545 A1 FR 2520545A1
- Authority
- FR
- France
- Prior art keywords
- concentration
- poison
- circuit
- primary circuit
- refrigerant
- 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
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 40
- 239000012530 fluid Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002574 poison Substances 0.000 title claims description 39
- 231100000614 poison Toxicity 0.000 title claims description 39
- 238000000909 electrodialysis Methods 0.000 claims abstract description 33
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 11
- 125000002091 cationic group Chemical group 0.000 claims description 13
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 10
- 239000004327 boric acid Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 5
- 238000010494 dissociation reaction Methods 0.000 claims description 4
- 230000005593 dissociations Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000000108 ultra-filtration Methods 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000012809 cooling fluid Substances 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims description 2
- 238000003379 elimination reaction Methods 0.000 claims description 2
- 238000000502 dialysis Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000009257 reactivity Effects 0.000 abstract description 4
- 231100000572 poisoning Toxicity 0.000 abstract description 3
- 230000000607 poisoning effect Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 13
- 229910052796 boron Inorganic materials 0.000 description 13
- 239000012528 membrane Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 125000000129 anionic group Chemical group 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 150000000921 Gadolinium Chemical class 0.000 description 2
- 150000007514 bases Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009089 cytolysis Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/22—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of a fluid or fluent neutron-absorbing material, e.g. by adding neutron-absorbing material to the coolant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
- B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/12—Addition of chemical agents
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Nanotechnology (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201249A FR2520545A1 (fr) | 1982-01-27 | 1982-01-27 | Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nuclaire |
| YU00106/83A YU10683A (en) | 1982-01-27 | 1983-01-19 | Arrangement for the modification of the concentration of soluble neutron absorber contained in a cooling fluid of the primary circuit of a nuclear reactor |
| FI830268A FI79414C (fi) | 1982-01-27 | 1983-01-26 | Foerfarande och anordning foer aendring av koncentrationen av loesligt gift i kylvaetskan i den primaera kylkretsen av en kaernreaktor. |
| ZA83499A ZA83499B (en) | 1982-01-27 | 1983-01-26 | Process and device for modifying the concentration of the soluble poison contained in the cooling fluid of the primary circuit of a nuclear reactor |
| ES519267A ES8502277A1 (es) | 1982-01-27 | 1983-01-26 | Procedimiento y dispositivo de modificacion de la concentracion del veneno soluble contenido en el fluido refrigerante del circuito primario de un reactor nuclear. |
| CA000420286A CA1180680A (fr) | 1982-01-27 | 1983-01-26 | Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nucleaire |
| KR1019830000299A KR900009107B1 (ko) | 1982-01-27 | 1983-01-26 | 가용성 포이즌의 농도 조정 방법 |
| EP83400176A EP0085611B2 (fr) | 1982-01-27 | 1983-01-26 | Procédé et dispositif de modification de la concentration du poison soluble contenu dans le fluide réfrigérant du circuit primaire d'un réacteur nucléaire |
| DE8383400176T DE3361505D1 (en) | 1982-01-27 | 1983-01-26 | Method and device for modifying the concentration of a soluble poison in the coolant of the primary system of a nuclear reactor |
| JP58012074A JPS58129387A (ja) | 1982-01-27 | 1983-01-27 | 原子炉の1次回路の冷却流体に含まれる可溶性毒の濃度を変更する方法及びそのための装置 |
| EG53/83A EG16629A (en) | 1982-01-27 | 1983-01-29 | Process and device for modifying the concentration of the soluble poison contained in the cooling fluid of a nuclear reactor |
| US07/365,582 US5082618A (en) | 1982-01-27 | 1989-06-13 | Method and device for modifying the concentration of the soluble poison contained in the cooling fluid of the primary circuit of a nuclear reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201249A FR2520545A1 (fr) | 1982-01-27 | 1982-01-27 | Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nuclaire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2520545A1 true FR2520545A1 (fr) | 1983-07-29 |
| FR2520545B1 FR2520545B1 (cg-RX-API-DMAC10.html) | 1984-03-09 |
Family
ID=9270361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8201249A Granted FR2520545A1 (fr) | 1982-01-27 | 1982-01-27 | Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nuclaire |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5082618A (cg-RX-API-DMAC10.html) |
| EP (1) | EP0085611B2 (cg-RX-API-DMAC10.html) |
| JP (1) | JPS58129387A (cg-RX-API-DMAC10.html) |
| KR (1) | KR900009107B1 (cg-RX-API-DMAC10.html) |
| CA (1) | CA1180680A (cg-RX-API-DMAC10.html) |
| DE (1) | DE3361505D1 (cg-RX-API-DMAC10.html) |
| EG (1) | EG16629A (cg-RX-API-DMAC10.html) |
| ES (1) | ES8502277A1 (cg-RX-API-DMAC10.html) |
| FI (1) | FI79414C (cg-RX-API-DMAC10.html) |
| FR (1) | FR2520545A1 (cg-RX-API-DMAC10.html) |
| YU (1) | YU10683A (cg-RX-API-DMAC10.html) |
| ZA (1) | ZA83499B (cg-RX-API-DMAC10.html) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2571977B1 (fr) * | 1984-10-23 | 1990-06-22 | Framatome Sa | Procede de separation de constituants d'un acide faible, notamment d'acide borique et membrane pour la mise en oeuvre dudit procede. |
| US5377244A (en) * | 1992-12-31 | 1994-12-27 | Westinghouse Electric Corp. | Apparatus and method for chemically decontaminating a PWR reactor coolant system |
| DE19747077A1 (de) * | 1997-10-24 | 1999-04-29 | Enbw Kraftwerke Ag Kernkraftwe | Verfahren und Vorrichtung zum Abtrennen von ·7·Li aus dem Primärkühlkreis eines Kernkraftwerks |
| DE19747076C2 (de) * | 1997-10-24 | 2001-11-29 | Enbw Kraftwerke Ag Kernkraftwe | Verfahren und Vorrichtung zum Abtrennen von ¶7¶Li oder Bor aus dem Primärkühlkreis eines Kernkraftwerks |
| US7645387B2 (en) * | 2006-12-11 | 2010-01-12 | Diversified Technologies Services, Inc. | Method of utilizing ion exchange resin and reverse osmosis to reduce environmental discharges and improve effluent quality to permit recycle of aqueous or radwaste fluid |
| US7708890B2 (en) * | 2006-12-11 | 2010-05-04 | Diversified Technologies Services, Inc. | Method of rendering a radioactive and aqueous heat transfer liquid in a nuclear reactor to a reduced radwaste quantitative state and returning the remaining waste water volumes to an environmental release point for liquid effluents |
| JP5364424B2 (ja) * | 2009-04-14 | 2013-12-11 | 三菱重工業株式会社 | 原子炉 |
| EP2973590B1 (en) * | 2013-03-15 | 2019-04-24 | Ceradyne Inc. | Method of cooling nuclear reactor and nuclear reactor including polyhedral boron hydride or carborane anions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1477058A (fr) * | 1965-05-10 | 1967-04-14 | Atomic Energy Authority Uk | Procédé de traitement de l'eau utilisée pour le réglage d'un réacteur nucléaire pour en récupérer l'acide borique |
| US3453201A (en) * | 1965-10-05 | 1969-07-01 | Asahi Chemical Ind | Polarity reversing electrode units and electrical switching means therefor |
| FR1598608A (cg-RX-API-DMAC10.html) * | 1968-01-23 | 1970-07-06 | ||
| FR2076099A1 (en) * | 1970-01-14 | 1971-10-15 | Westinghouse Electric Corp | Nuclear reactor control system |
| US3624241A (en) * | 1970-02-10 | 1971-11-30 | Nasa | Method and apparatus for controlling thermal nuclear reactors |
| US4284492A (en) * | 1979-12-05 | 1981-08-18 | Karn William S | Reverse osmosis electrodialysis combined means |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1460022A (fr) * | 1965-10-13 | 1966-06-17 | Commissariat Energie Atomique | Procédé de compensation des variations de réactivité d'un réacteur nucléaire à modérateur liquide et réacteur mettant en oeuvre ledit procédé |
| JPS5336118B2 (cg-RX-API-DMAC10.html) * | 1974-06-13 | 1978-09-30 | ||
| US4087375A (en) * | 1975-05-07 | 1978-05-02 | Shin Tohoku Chemical Industry Co., Ltd. | Method for treating radioactive waste water |
| CA1064626A (en) * | 1977-06-09 | 1979-10-16 | Majesty (Her) In Right Of Canada As Represented By Atomic Energy Of Cana Da Limited | Deposit suppression in the core of water-cooled nuclear reactors |
| US4148708A (en) * | 1977-07-22 | 1979-04-10 | The Babcock & Wilcox Company | Combination ion exchange and electrodialysis fluid purification apparatus |
| DE2855529A1 (de) * | 1978-12-22 | 1980-06-26 | Babcock Brown Boveri Reaktor | Verfahren und einrichtung zum deborieren von primaerkuehlmittel einer wassergekuehlten kernreaktoranlage |
-
1982
- 1982-01-27 FR FR8201249A patent/FR2520545A1/fr active Granted
-
1983
- 1983-01-19 YU YU00106/83A patent/YU10683A/xx unknown
- 1983-01-26 DE DE8383400176T patent/DE3361505D1/de not_active Expired
- 1983-01-26 ZA ZA83499A patent/ZA83499B/xx unknown
- 1983-01-26 KR KR1019830000299A patent/KR900009107B1/ko not_active Expired
- 1983-01-26 ES ES519267A patent/ES8502277A1/es not_active Expired
- 1983-01-26 EP EP83400176A patent/EP0085611B2/fr not_active Expired - Lifetime
- 1983-01-26 FI FI830268A patent/FI79414C/fi not_active IP Right Cessation
- 1983-01-26 CA CA000420286A patent/CA1180680A/fr not_active Expired
- 1983-01-27 JP JP58012074A patent/JPS58129387A/ja active Pending
- 1983-01-29 EG EG53/83A patent/EG16629A/xx active
-
1989
- 1989-06-13 US US07/365,582 patent/US5082618A/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1477058A (fr) * | 1965-05-10 | 1967-04-14 | Atomic Energy Authority Uk | Procédé de traitement de l'eau utilisée pour le réglage d'un réacteur nucléaire pour en récupérer l'acide borique |
| US3453201A (en) * | 1965-10-05 | 1969-07-01 | Asahi Chemical Ind | Polarity reversing electrode units and electrical switching means therefor |
| FR1598608A (cg-RX-API-DMAC10.html) * | 1968-01-23 | 1970-07-06 | ||
| FR2076099A1 (en) * | 1970-01-14 | 1971-10-15 | Westinghouse Electric Corp | Nuclear reactor control system |
| US3624241A (en) * | 1970-02-10 | 1971-11-30 | Nasa | Method and apparatus for controlling thermal nuclear reactors |
| US4284492A (en) * | 1979-12-05 | 1981-08-18 | Karn William S | Reverse osmosis electrodialysis combined means |
Also Published As
| Publication number | Publication date |
|---|---|
| EG16629A (en) | 1990-10-30 |
| JPS58129387A (ja) | 1983-08-02 |
| FR2520545B1 (cg-RX-API-DMAC10.html) | 1984-03-09 |
| FI830268A0 (fi) | 1983-01-26 |
| KR840003526A (ko) | 1984-09-08 |
| EP0085611B1 (fr) | 1985-12-18 |
| FI830268L (fi) | 1983-07-28 |
| ES519267A0 (es) | 1984-12-16 |
| KR900009107B1 (ko) | 1990-12-22 |
| DE3361505D1 (en) | 1986-01-30 |
| YU10683A (en) | 1986-04-30 |
| EP0085611B2 (fr) | 1990-03-07 |
| ES8502277A1 (es) | 1984-12-16 |
| US5082618A (en) | 1992-01-21 |
| EP0085611A1 (fr) | 1983-08-10 |
| ZA83499B (en) | 1983-10-26 |
| FI79414C (fi) | 1989-12-11 |
| CA1180680A (fr) | 1985-01-08 |
| FI79414B (fi) | 1989-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2520545A1 (fr) | Procede et dispositif de modification de la concentration du poison soluble contenu dans le fluide refrigerant du circuit primaire d'un reacteur nuclaire | |
| FR2719505A1 (fr) | Procédé de déminéralisation d'un liquide contenant en solution des matières organiques et des sels. | |
| JP4241684B2 (ja) | 膜モジュールの洗浄方法 | |
| CN108554186B (zh) | 一种工业废水反渗透膜化学清洗方法 | |
| FR2608016A1 (fr) | Procede et dispositif pour la fabrication d'un fromage a l'aide de la microfiltration | |
| JP7289225B2 (ja) | 濃縮装置ならびに濃縮装置の洗浄方法および濃縮方法 | |
| CA1097587A (fr) | Decyanuration d'eaux residuaires | |
| FR2488523A1 (fr) | Procede d'elimination par lavage, notamment en plusieurs etages, des composants acides, tels que le co2, le hcn et en particulier le h2s, qui entrent dans la formation des gaz, notamment des gaz de cokerie, a l'aide d'un lavage ammoniacal en circuit ferme | |
| WO1995006110A1 (fr) | Procede et dispositif automatique de stabilisation tartrique des vins | |
| JP3453881B2 (ja) | 膜分離方法 | |
| CN1112543A (zh) | 从海带浸泡液中提取甘露醇的方法 | |
| CN216024159U (zh) | 一种反渗透膜元件后处理及测试装置 | |
| FR3087356A1 (fr) | Installation et procede de separation d’au moins une espece ionique a partir d’une solution comprenant au moins ladite espece ionique et du lithium | |
| JP2002004810A (ja) | 復水処理方法 | |
| KR20210073767A (ko) | 막증발 시스템의 간헐 운전 방법 | |
| FR2672071A1 (fr) | Procede pour introduire l'eau pure d'une source chaude directement transportee depuis une station thermale dans le bain d'un etablissement thermal et pour conserver sa purete et sa fraicheur. | |
| JP6300988B2 (ja) | 水処理装置の運転方法、及び飲用水を製造する方法 | |
| JP2011255340A (ja) | 溶媒抽出方法及び装置 | |
| JPH05123133A (ja) | 淡色醤油の製造方法 | |
| EP0370869A1 (fr) | Perfectionnements à l'extraction par diffusion du sucre de betteraves | |
| JPS625578Y2 (cg-RX-API-DMAC10.html) | ||
| EP0497699B1 (fr) | Procédé perfectionné de traitement préliminaire des cossettes avant diffusion | |
| FI79724C (fi) | Foerfarande foer kokning av cellulosamaterial | |
| JPH09117762A (ja) | 逆浸透膜による水処理方法とその装置 | |
| FR2874220A1 (fr) | Procede de regeneration des acides d'usinage chimique, installation pour la mise en oeuvre du procede et procede d'usinage chimique associe. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |