Title:
CLEANING LIQUID AND CLEANING METHOD USING THE SAME
Document Type and Number:
Japanese Patent JPH05137918
Kind Code:
A
Abstract:
PURPOSE: To provide a cleaning liq. for a filter element having both a drastic cleaning effect and a corrosion preventing effect on a metallic material.
CONSTITUTION: An org. corrosion inhibitor is added to nitric acid to obtain a cleaning liq. having both a cleaning effect by the strong acid and a corrosion inhibiting effect and a blocked filter element is cleaned by immersion in the cleaning liq. Blocking matter hard to remove by the conventional method can efficiently be removed and scale in a chemical device as well as in a filter device is very effectively removed.
Inventors:
OGAWA MASARU
Application Number:
JP33118291A
Publication Date:
June 01, 1993
Filing Date:
November 20, 1991
Export Citation:
Assignee:
KANAGAWA KIKI KOGYO KK
International Classes:
B01D24/46; B01D29/62; B01D35/16; B01D41/00; C01B21/38; (IPC1-7): B01D24/46; B01D29/62; B01D35/16; B01D41/00; C01B21/38
Domestic Patent References:
| JPS5791715A | 1982-06-08 | |||
| JPS5633301A | 1981-04-03 |
Attorney, Agent or Firm:
Naoto Kan (1 person outside)
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