The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1976
Filed:
Aug. 22, 1975
William Ridley Pledger, Houston, TX (US);
John Edward Gwyn, Pasadena, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
Waste material such as sewage biotreater sludge which is partially combustible and contains a substantial proportion of ash, including easily fusible salts, is incinerated in a fluidized bed incinerator provided with a special quench system which protects against premature plugging of the incinerator vapor withdrawal lines. The quench consists of a refractory-lined metal conduit ending approximately flush with the refractory lining of the incinerator in the upper portion of the incinerator dome, a second conduit at approximately right angles for withdrawal of vapors from the first conduit and quench water injection means adapted to inject quench water into the opening of the second conduit. Optionally, the system may be equipped with means for injecting a small proportion of the quench water into the incinerator vapor space just upstream from the vapor offtake conduit and with means for injecting a small proportion of the quench water against the vapor offtake conduit near its intake end, so as to wet the metal surface of the conduit. In the latter case, a lip is mounted on said intake end so as to distribute the water on the full circumference of the conduit and to keep water from the incinerator lining.