Method of operating steam boiler
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 31, 2016
Grant Date -
Jan 5, 2012
app pub date -
Mar 16, 2011
filing date -
Jun 30, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Boiler water is heated in a steam boiler while feed water, which has a hardness of 5 mg CaCO3/L or less and is used as the boiler water, is supplied to the steam boiler. A part of the boiler water is appropriately disposed of. A chemical aqueous solution containing an alkaline metal silicate, an alkaline metal hydroxide and at least one kind of scale preventive agents of ethylenediamine tetraacetate, and its alkaline metal salt, is supplied to the feed water so that a concentration of the scale preventive agent is at least 1.5 mol equivalent times relative to the hardness of the feed water. In the steam boiler, a condensation rate of the boiler water is set so that the concentration of the scale preventive agent in the boiler water is 40 mg EDTA/L or less.
First Claim
Family
International Classification(s)
- C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
- H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
- F22B:METHODS OF STEAM GENERATION; STEAM BOILERS
- C23F:NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM S....
- C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....
- C01D:COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, ....
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully