Process and apparatus for treating waste
AssigneeUnited States Filter Corporation
InventorVerne T. Buehler
Life of this patent
Estimating the term…
Abstract
An apparatus and method for the treatment of waste solids that allows for the direct transfer of heat between hot waste solids and cold waste solids in a tube-in-tube heat exchanger. Cold solid waste is moved from a cold solid waste source through one tube of the heat exchanger, and hot solid waste is move from a hot solid waste source through the other tube of the tube-in-tube heat exchanger, and heat is transferred from the hot solid waste to the cold solid waste. The waste treatment, including the heat exchange, can occur in a batch mode or in a continuous mode.
Claims23
A method of treating waste, the method comprising the acts of:
- (a) providing a cold waste solids source for maintaining cold waste solids, a hot waste solids source separate from the cold waste solids source for maintaining hot waste solids, and a heat exchanger remotely located from and fluidly interconnected with the cold waste solids source and the hot waste solids source;
- (b) passing a volume of cold waste solids from the cold waste solids source through the heat exchanger;
- (c) passing a volume of hot waste solids from the hot waste solids source through the heat exchanger to transfer heat from the hot waste solids to the cold waste solids;
- and
- (d) passing at least a second time through the heat exchanger at least a portion of one of the volume of cold waste solids and the volume of hot waste solids passed through the heat exchanger to transfer heat from the hot waste solids passing through the heat exchanger to the cold waste solids passing through the heat exchanger.
A method of treating waste, comprising the act of:
- (a) providing a cold waste solids source for maintaining cold waste solids, a hot waste solids source separate from the cold waste solids source, for maintaining hot waste solids, a conditioning vessel remote from and fluidly interconnected with the cold waste solids source and the hot waste solids source for conditioning cold waste solids to produce hot waste solids, and a heat exchanger remotely located from and fluidly interconnected with the cold waste solids source and the hot waste solids source;
- (b) continuously passing a volume of cold waste solids from the cold waste solids tank through the heat exchanger;
- (c) continuously passing a volume of hot waste solids from the hot waste solids tank through the heat exchanger to transfer heat from the hot waste solids passing through the heat exchanger to the cold waste solids passing through the heat exchanger;
- (d) passing a second volume of cold waste solids from the cold waste solids tank to the conditioning tank;
- (e) conditioning the second volume of cold waste solids in the conditioning vessel to produce hot waste solids;
- (f) passing a second volume of hot waste solids from the conditioning vessel to the hot waste solids source;
- and
- (g) moving a third volume of hot waste solids from the hot waste solids tank to a receiving tank.
A method of treating waste, comprising the acts of:
- (a) providing a cold waste solids source for maintaining cold waste solids, a hot waste solids source separate from the cold waste solids source, for maintaining hot waste solids, and a heat exchanger remotely located from and connected to the cold waste solids source and the hot waste solids source;
- (b) passing cold waste solids from the cold waste solids source through the heat exchanger and back to the cold waste solids source;
- and
- (c) passing hot waste solids from said hot waste solids source through the heat exchanger back to the hot waste solids source, whereby heat is transferred from the hot waste solids passing through the heat exchanger to the cold waste solids passing through the heat exchanger.
Dependencies are inferred from the claim text.