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Title: Convective heater

Abstract

A convective heater for heating fluids such as a coal slurry is constructed of a tube circuit arrangement which obtains an optimum temperature distribution to give a relatively constant slurry film temperature. The heater is constructed to divide the heating gas flow into two equal paths and the tube circuit for the slurry is arranged to provide a mixed flow configuration whereby the slurry passes through the two heating gas paths in successive co-current, counter-current and co-current flow relative to the heating gas flow. This arrangement permits the utilization of minimum surface area for a given maximum film temperature of the slurry consistent with the prevention of coke formation.

Inventors:
 [1]
  1. (Macungie, PA)
Issue Date:
Research Org.:
International Coal Refining Co
OSTI Identifier:
864814
Patent Number(s):
4422411
Assignee:
International Coal Refining Company (Allentown, PA) ORO
DOE Contract Number:  
AC05-78OR03054
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
convective; heater; heating; fluids; coal; slurry; constructed; tube; circuit; arrangement; obtains; optimum; temperature; distribution; relatively; constant; film; divide; gas; flow; equal; paths; arranged; provide; mixed; configuration; whereby; passes; successive; co-current; counter-current; relative; permits; utilization; minimum; surface; maximum; consistent; prevention; coke; formation; optimum temperature; film temperature; convective heat; relatively constant; gas flow; current flow; coal slurry; heating gas; temperature distribution; circuit arrangement; co-current flow; coke formation; tube circuit; convective heater; gas path; arrangement permits; flow configuration; slurry film; heating fluids; heating fluid; constant slurry; /122/165/

Citation Formats

Thorogood, Robert M. Convective heater. United States: N. p., 1983. Web.
Thorogood, Robert M. Convective heater. United States.
Thorogood, Robert M. Sat . "Convective heater". United States. https://www.osti.gov/servlets/purl/864814.
@article{osti_864814,
title = {Convective heater},
author = {Thorogood, Robert M.},
abstractNote = {A convective heater for heating fluids such as a coal slurry is constructed of a tube circuit arrangement which obtains an optimum temperature distribution to give a relatively constant slurry film temperature. The heater is constructed to divide the heating gas flow into two equal paths and the tube circuit for the slurry is arranged to provide a mixed flow configuration whereby the slurry passes through the two heating gas paths in successive co-current, counter-current and co-current flow relative to the heating gas flow. This arrangement permits the utilization of minimum surface area for a given maximum film temperature of the slurry consistent with the prevention of coke formation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Patent:

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