Gas bubbling cleaning method
Creators
- 1. Tokyo Electric Power Co., Inc. (Japan)
Description
The present invention concerns a gas bubbling cleaning method for objects to be cleaned having complicate shapes such as reactor equipments. For instance, air is used as the gas, while water is used as the cleaning fluid. A jetting air is jetted out to an object to be cleaned from an air bubbling nozzle disposed below the object. This constitutes air/water two phase flow near the object to be cleaned, to generate a three dimensional circulating flow. The distance between the inner wall surface of a cleaning vessel and the object to be cleaned is set to greater than 5 mm, and the ratio between the air flow rate and the horizontal cross section of the cleaning vessel is set to 0.1 to 0.4m/sec. This enables to enter an appropriate amount of bubbles to the air at the inside of the object to be cleaned having a complicate shape. Accordingly, deposits adhered to the inside of the object to be cleaned can be eliminated and cleaned effectively. (I.N.)
Availability note (English)
Available from JAPIO. Also available from INPADOC.Additional details
Publishing Information
- Imprint Pagination
- 8 p.
- IPC:
- Int. Cl. G21F9/28; B08B3/10.
- IPC
- Int. Cl. G21F9/28; B08B3/10.
- Patent number
- JP patent document 3-229200/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 23039842
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- AIR; BUBBLES; CLEANING; CONTAINERS; FLOW RATE; GASES; NOZZLES; REACTOR COMPONENTS; SIZE; WATER
- Descriptors DEC
- FLUIDS; HYDROGEN COMPOUNDS; OXYGEN COMPOUNDS
Optional Information
- Secondary number(s)
- JP patent application 2-281978.