Title: Non-polluting disposal of antifouling paint residues encountered in shipyard abrasive blasting operations

Abstract: A process for neutralizing the toxic nature of organo-metallic antifouling (AF) paint particles, in intimate mixture with spent abrasive particles, derived from the abrasive blasting of ships' hulls. The spent abrasive containing the organo-metallic paint residue is collected and heated in a vapor-tight furnace which is fitted with a safety pressure release valve. When the ignition temperature of the organo-metallic paint is exceeded, the organo-metallic paint particles are oxidized to a harmless, non-toxic metal oxide, which may be safely disposed of. Volatile organo-metallic paint vapors are drawn through an after-burner so that exhaust residue consist only of non-polluting carbon dioxide and water vapor. Metallic elements of commercial value, such as tin, may be recovered from the processed abrasive, which may also be reusable. To ensure complete combustion, air is fed into the combustion furnace from a blower fan, compressor, or other external source.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Ticker, Arthur (Bowie, MD, US)

Application Number: 637421
Filing Date: 1975-12-03
Publication_date: 1976-09-21
Assignee:
Primary Class(es): 110/346 134/19
Other Classes:
US Patent Ref:

2474645	Jun, 1949	Baxter	75/85.
2815267	Dec, 1957	Platteeuw et al.	75/85.
3686034	Aug, 1972	Rothschild	134/19.
3802916	Apr, 1974	Jackson	134/19.
3821026	Jun, 1974	Swartz	134/2.
3847664	Nov, 1974	Gravel	134/2.
3899322	Aug, 1975	Yosim et al.	134/2.

Other Refs:
Primary Examiner: Sprague, Kenneth W.
Assistant Examiner:
Attorney: Sciascia; R. S., Hodges; Q. E., McGiehan; D.