Appeal No. 95-1668
Application 07/948,089
blending a hydrocarbon-containing waste material having a heating
value greater than 7000 BTU with sewage sludge from a secondary
treatment system of a sewage processing plant in an amount which
is between 10 and 50 wt% of the hydrocarbon-containing waste
material, adding a lime-containing substance to the blend, and
forming the resulting mixture into a form suitable for handling.
Somerville discloses a method for preparing a high heating
value fuel product by blending a high heating value waste
material which “should be a material having a heating value
greater than seven thousand BTU” with a cellulosic material and
a pozzolanic agent, and forming the resulting mixture into a form
suitable for handling (col. 2, lines 41-57). Somerville teaches
that a wide variety of high heating value waste materials can be
used such as oil tank bottoms, activated carbon particles and ion
exchange resins (col. 3, lines 37-45). The cellulosic material
“can be rice hulls, wood shavings, sawdust, ground corncobs,
grain dust, cotton gin waste, or similar material” (col. 2, lines
62-64). The pozzolanic agent “may be cement kiln dust or fly
ash” (col. 3, lines 8-10).
Somerville does not include in the blend sewage sludge from
a secondary treatment system of a sewage processing plant. To
remedy this deficiency the examiner relies upon von Porten. This
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Last modified: November 3, 2007