Back to results
US 7,407,600 B2Granted
Heat-transfer systems
AssigneeDupont Tale + Lyle Bio Products Company, LLC
InventorsEdward Eaton, Scot D. Kudcey
Life of this patent
Estimating the term…
Abstract
An improved system for transferring heat, utilizing diols, specifically 1,3-propanediol (PDO). The system reduces the energy consumption, maintenance costs, corrosion, toxicity, and the risk of fire associated with such heat-dependent processes. Unlike traditional hydrocarbon heating fluids, diols do not require draining and replacement if a purifier is installed in the system. Business methods are also disclosed.
Claims13
A heat-transfer process comprising the steps of:
- (a) selecting at least one endothermic industrial process, wherein long chain hydrocarbon heat-transfer fluids circulate among heater means for heating such heat-transfer fluids and heat transfer means for transferring heat to such endothermic industrial process, wherein such heat-transfer fluids circulate at temperatures of about 150° C. to about 225° C.;
- (b) substantially removing such long-chain hydrocarbon heat transfer fluids from such circulation;
- (c) introducing, into such circulation, heat-transfer fluids comprising 1,3-propanediol;
- and
- (d) operating such heat transfer process serving such endothermic industrial process with such introduced heat-transfer fluids.
2 more elements
A heat-transfer process comprising the steps of:
- (a) selecting at least one endothermic industrial process whose typical design circulates long-chain hydrocarbon heat-transfer fluids among heater means for heating such heat-transfer fluids and heat transfer means for transferring heat to such endothermic industrial process, wherein such heat-transfer fluids circulate at temperatures of about 150° C. to about 225° C.;
- (b) introducing, into such circulation, heat-transfer fluids comprising 1,3-propanediol;
- and
- (c) operating such heat transfer process serving such endothermic industrial processing with such introduced heat-transfer fluids.
1 more element
Dependencies are inferred from the claim text.