Convective heater

Thorogood, Robert M

Title: Convective heater

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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:

Thorogood, Robert M ^[1]

Macungie, PA

Issue Date:: 1983-01-01

Research Org.:: International Coal Refining Co

OSTI Identifier:: 864814

Patent Number(s):: 4422411

Assignee:: International Coal Refining Company (Allentown, PA)

Patent Classifications (CPCs):: C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS

F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT

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C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
C10G1/002 - {in combination with oil conversion- or refining processes}

F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
F28D7/08 - the conduits being otherwise bent, e.g. in a serpentine or zig-zag
F28D7/085 - {in the form of parallel conduits coupled by bent portions}

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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.

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                    Thorogood, Robert M. Convective heater.  United States.

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                    Thorogood, Robert M. Sat .  
        "Convective heater".  United States.  https://www.osti.gov/servlets/purl/864814.

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@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}

}

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