CS203279B3 - Deactivation liquid of the operation facility of nuclear power plant particularly the vapour generator - Google Patents
Deactivation liquid of the operation facility of nuclear power plant particularly the vapour generator Download PDFInfo
- Publication number
- CS203279B3 CS203279B3 CS776794A CS679477A CS203279B3 CS 203279 B3 CS203279 B3 CS 203279B3 CS 776794 A CS776794 A CS 776794A CS 679477 A CS679477 A CS 679477A CS 203279 B3 CS203279 B3 CS 203279B3
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- nuclear power
- power plant
- vapour generator
- trichlorethylene
- operation facility
- Prior art date
Links
- 230000009849 deactivation Effects 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 title claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 4
- 238000011033 desalting Methods 0.000 claims 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 229910017604 nitric acid Inorganic materials 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004821 distillation Methods 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000415 inactivating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Vynález se týká dezaktivační kapaliny provozního zařízení jaderné elektrárny, zvláště parního generátoru.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to the deactivation liquid of a nuclear power plant operating apparatus, in particular a steam generator.
Vnitřní povrchy provozních zařízení jaderných elektráren, zvláště jejich teplonosných okruhů a parních generátorů, se při provozu zamořují radioaktivními látkami, které se musí občas odstranit dezaktivací. Dezaktivace se doposud prováděla buď vodnými roztoky dezaktivačních činidel, nebo podle autorského osvědčení č. 203 278 též dezaktivačními kapalinami, jejichž základem je bud trichloretylén, nebo benzin, nebo směs vytvořená z těchto tří rozpouštědel, do nichž se přidávají menší množství dezaktivačních činidel, vody a etanolu. Etanol umožňuje vzájemné míšení < trichloretylénu, některých dezaktivačních činidel a vody. Pod pojmem dezaktivačních činidel se rozumějí chemické látky nebo směsi látek z těchto skupin: minerální kyseliny, komplexotvorné látky, kapalné měniče iontů, anorganická odmašťovadla, mýdla, saponáty a látky zesilující jejich detergenční účinky. Nevýhodou trichloretylénových disperzí obsahujících etanol je okolnost, že etanol má nižší teplotu varu nežli trichloretylén, následkem toho při regeneraci trichloretylénu destilací hořlavé látky etanolu destilují dříve, což vyvolává nebezpečí požáru v příslušném provozu.The internal surfaces of nuclear power plant operating equipment, especially its heat carrying circuits and steam generators, are contaminated by radioactive substances during operation, which must occasionally be removed by deactivation. The deactivation has hitherto been carried out either with aqueous solutions of deactivating agents or, according to the author's certificate No. 203 278, also with deactivating liquids based on either trichlorethylene or gasoline, or a mixture formed from these three solvents to which smaller amounts of deactivating agents, water and ethanol. Ethanol allows the intermixing of trichlorethylene, some deactivating agents and water. Deactivating agents are understood to be chemical substances or mixtures of substances from the following groups: mineral acids, complexing agents, liquid ion exchangers, inorganic degreasers, soaps, detergents and detergency enhancers. A disadvantage of ethanol-containing trichlorethylene dispersions is the fact that ethanol has a lower boiling point than trichlorethylene and consequently distills earlier when trichlorethylene is recovered by distillation of the combustible ethanol, causing a fire hazard in the plant in question.
Uvedený nedostatek odstraňuje dezaktivační kapalina provozního zařízení jaderné elektrárny, zvláště parního generátoru, podle vynálezu, jehož podstata spočívá v tom, že směs komponent podle autorského osvědčení č. 203 278, obsahující nejméně jedno dezaktivační činidlo, obsahuje též butanol v množství nejvýše 0,09 hmotnosti. Butanol má nižší teplotu varu nežli trichloretylén. Následkem toho při regeneraci trichloretylénu destilací odcházejí nehořlavé páry trichloretylénu a malý zbytek butanolu, který zůstane v destilační nádobě, může být odvržen bez destilace. Tím se bezpečnost regeneračního zařízení podstatně zvyšuje.This deficiency is remedied by the inactivation liquid of the nuclear power plant operating equipment, in particular the steam generator, according to the invention, characterized in that the mixture of components according to the author's certificate No. 203 278 containing at least one inactivating agent also contains butanol in . Butanol has a lower boiling point than trichlorethylene. As a result, when trichlorethylene is recovered by distillation, non-flammable vapors of trichlorethylene are removed and a small residue of butanol remaining in the distillation vessel can be discarded without distillation. As a result, the safety of the regeneration plant is substantially increased.
Příklady dezaktivačních trichloretylénových disperzí podle vynálezu:Examples of inactivating trichlorethylene dispersions according to the invention:
1. 96,900 % hmot. trichloretylénu,1. 96,900 wt. trichlorethylene,
3,000 % hmot. 1-butanolu,3,000 wt. 1-butanol,
0,065 % hmot. kyseliny dusičné HNO3, 0,035 % hmot. vody.0.065 wt. % nitric acid HNO3, 0.035 wt. water.
2. 94,7 °/o hmot. trichloretylénu,2. 94.7 ° / wt. trichlorethylene,
3,0 % hmot. 1-butanolu,3.0 wt. 1-butanol,
0,2 % hmot. kyseliny dusičné HNO3,0.2 wt. nitric acid HNO3,
0,1 ®/o hmot. vody,0.1 ® / o wt. water,
2,0 % hmot. kondenzátu oleylalk-oholu s etylénoxidem.2.0 wt. oleylalk-condensate condensate with ethylene oxide.
3. 98,800 % hmot. trlchloreťyíénú, t3. 98,800 wt. trichloroethylene, i
0,100 % hmot. 1-butanolu,0.100 wt. 1-butanol,
0,065 % hmot. kyseliny dusičné HNO3, 0,035 % hmot. vody,0.065 wt. % nitric acid HNO3, 0.035 wt. water,
1,000 % hmot. kondenzátu oleylalkoho-. lu s etylénoxidem.1,000 wt. oleylalkoho condensate. lu with ethylene oxide.
Vynález- může být využit v jaderných elektrárnách a reaktorech při dezaktivaci jejich provozního zařízení, zvláště parních generátorů.The invention can be used in nuclear power plants and reactors in the deactivation of their process equipment, especially steam generators.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS776794A CS203279B3 (en) | 1977-10-19 | 1977-10-19 | Deactivation liquid of the operation facility of nuclear power plant particularly the vapour generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS776794A CS203279B3 (en) | 1977-10-19 | 1977-10-19 | Deactivation liquid of the operation facility of nuclear power plant particularly the vapour generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS203279B3 true CS203279B3 (en) | 1981-02-27 |
Family
ID=5415790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS776794A CS203279B3 (en) | 1977-10-19 | 1977-10-19 | Deactivation liquid of the operation facility of nuclear power plant particularly the vapour generator |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS203279B3 (en) |
-
1977
- 1977-10-19 CS CS776794A patent/CS203279B3/en unknown
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