B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
309/28.1
B01D 35/18 (2006.01) H05B 6/02 (2006.01) H05B 6/10 (2006.01)
Patent
CA 1249623
ABSTRACT A self-regulating porous heater device regulates the temperature of fluid passing through it. This device includes at least one layer of a porous material which has a magnetic permeability inversely related to tempera- ture over a given range. Due to conductor skin effects, changes in permeability cause changes in the depth of pe- netration of a.c. current passing through the magnetic layer. Changes in the depth of penetration, in turn, re- sult in changes in resistance--the less the depth the greater the resistance--and in I2R Joule heat. The com- bined result of these effects is to provide more heat where the temperature of the fluid and the layer through which the fluid flow is below a specified temperature which is related to the Curie temperature of the layer. The invention further contemplates a laminate structure including a porous magnetic layer and at least one other magnetic layer or at least one low resistance nonmagnetic layer or a combination thereof, which may or may not be porous. Other variations in heat generation response can be realized by specially defining the alloy structure or dimensions of a layer or layers in a device. Significant- ly, by properly defining pore dimensions, the heater de- vice can filter contaminants from a fluid as it flows therethrough. Means for switching between a normal ope- rating temperature and an elevated temperature for vapo- rizing or burning off contaminants at the pores is also provided. A tubular structure, as well as a conical structure, of the heater and optional filter device is contemplated. In a preferred mode, a porous heater de- vice is included in a chemical reaction chamber. Fluids flowing through the chamber are closely controlled in temperature through each reaction zone by the heater de- vice (through which the fluids flow) and by an optional cooling element. By defining the structure of the cham- ber and the rate of fluid flow, close control of other reaction parameters can also be achieved. Such close control permits greater specifity of reaction yield and greater safety in various exothermic reactions.
455162
Delaware Capital Formation Inc.
Marks & Clerk
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