Pathogen reduction system used in treating wastewater
First Claim
1. A heat exchanger comprising:
- a. a tubular inner sleeve;
b. a coiled tube wound closely around the inner sleeve so as to form a continuous sealed relationship between the coiled tube and the inner sleeve;
c. the coil tube including adjacent wound segments that are spaced apart to form a continuous flow channel that is formed and bounded by the inner sleeve and the spaced apart wound segments of the coiled tube;
d. a pair of moveable partial cylindrical panels each being moveably mounted relative to the inner sleeve for movement between a closed and open position such that in the closed position the partial cylindrical panels extend around the inner sleeve and the coiled tube and close down on the coiled tube and form a generally fluid tight seal between the partial cylindrical panels and the coiled tube thereby resulting in the flow channel being generally sealed and bound by the spaced apart wound segments of the coiled tube, the inner sleeve, and the partial cylindrical panels; and
e. wherein each partial cylindrical panel is openable independently of the other and in an open position the wound segments of the coiled tube and the flow channel are exposed for cleaning.
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Accused Products
Abstract
A pathogen reduction system for a sludge treatment process that employees multiple reactors operating in a batch mode to reduce pathogen levels in the sludge while providing a continuous flow of pathogen reduced sludge to a digester. In addition, the present invention entails an efficient heat exchanger for heating and cooling the sludge being treated in the above process. In particular, the heat exchanger is of the counterflow type and includes a helical coil confined in an annular chamber for transmitting one media and wherein the helical coil is spaced so as to form another helical flow channel that is defined by the annular chamber and the helical coil itself. Consequentially, one media is directed through the helical coil while another media is directed through the flow channel that is defined in part by the helical coil.
29 Citations
10 Claims
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1. A heat exchanger comprising:
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a. a tubular inner sleeve; b. a coiled tube wound closely around the inner sleeve so as to form a continuous sealed relationship between the coiled tube and the inner sleeve; c. the coil tube including adjacent wound segments that are spaced apart to form a continuous flow channel that is formed and bounded by the inner sleeve and the spaced apart wound segments of the coiled tube; d. a pair of moveable partial cylindrical panels each being moveably mounted relative to the inner sleeve for movement between a closed and open position such that in the closed position the partial cylindrical panels extend around the inner sleeve and the coiled tube and close down on the coiled tube and form a generally fluid tight seal between the partial cylindrical panels and the coiled tube thereby resulting in the flow channel being generally sealed and bound by the spaced apart wound segments of the coiled tube, the inner sleeve, and the partial cylindrical panels; and e. wherein each partial cylindrical panel is openable independently of the other and in an open position the wound segments of the coiled tube and the flow channel are exposed for cleaning. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification