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US 5,474,280 AGranted
Apparatus for preheating a reactor feed
OwnerCharles A. Martininventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for preheating a reactor feed, comprised of an iron ore (10) and a process gas (21), in an iron carbide process for making steel is provided. The apparatus comprises a process gas preheater (40) having a furnace (56) and a heat exchanger (58). The process gas (21) is heated uniformly in tubes (117) of furnace (56) by burners (100). Excess heat generated by furnace (56) is captured by heat exchanger (58) and used to preheat combustion air (61) and ore (10).
Claims19
An apparatus for preheating a reactor feed comprising:
- (a) a gas line for conveying a process gas, the gas line having an inlet for receiving cool process gas and an outlet for discharging heated process gas, the gas line further comprising:
- (i) a plurality of tubes;
- (ii) an inlet manifold, connected to the tubes at the inlet of the gas line, for distributing the cool process gas to the tubes;
- and
- (iii) an outlet manifold, connected to the tubes at the outlet of the gas line, for collecting the heated process gas from the tubes for discharge, each of the tubes in the gas line forming an elbow between the inlet manifold and the outlet manifold;
- and
- (b) a plurality of burners for heating the process gas to a desired temperature, each of the burners positioned adjacent to the tubes in the gas line so that each of the tubes is heated uniformly.
4 more elements
An apparatus for preheating a reactor feed comprising:
- (a) a gas line, constructed of a plurality of tubes, for conveying a process gas, the gas line having an inlet for receiving cool process gas and an outlet for discharging heated process gas, each of the plurality of tubes forming an elbow between the inlet and the outlet;
- (b) a fuel input line coupled to a fuel source and a combustion air input line coupled to an air source;
- (c) a plurality of burners connected to the fuel input line and the combustion air input line for heating the process gas to a desired temperature, each of the burners positioned adjacent to the tubes so that each of the tubes is heated uniformly;
- and
- (d) a heat exchanger for recovering excess heat produced by the burners.
2 more elements
A process gas preheater, comprising:
- (a) an inlet operable to receive cool process gas;
- (b) an outlet operable to collect heated process gas for discharge;
- (c) a plurality of tubes disposed between the inlet and the outlet, each of the tubes forming an elbow between the inlet and the outlet;
- and
- (d) a plurality of burners for heating the process gas to a desired temperature, the burners positioned adjacent to the tubes so that each of the tubes is heated uniformly.
2 more elements
Dependencies are inferred from the claim text.