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Coke quenching steam generator
| Details |
Inventors: Jablin, Richard;
Assignee:
Primary Examiner: Scovronek; Joseph
Assistant Examiner: Turk; Arnold
Attorney, Agent or Firm: Finnegan, Henderson, Farabow & Garrett
A coke quenching steam generator comprising a vertical, refractory-lined pressure vessel for quenching of incandescent coke and producing useful steam from the sensible heat in the coke. Included in the pressure vessel are pressure-tight doors for receiving and discharging the coke, water sprays for quenching the coke, a hopper for receiving the coke and a gate and feeder for controlling the discharge of the quenched coke. External to the pressure vessel are a crane for lifting containers of incandescent coke to the receiving hopper of the pressure vessel, valves for controlling the flow of steam and water, a high efficiency cyclone for cleaning the steam, a belt conveyor for receiving the quenched coke, pumps, water storage tank, piping and controls. |
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DETAILED DESCRIPTION Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: 1.
A batch process for quenching incandescent coke and producing steam at superatmospheric pressure, comprising: a.
feeding the coke into the top of a vertically disposed pressure vessel to substantially fill said vessel with a stationary batch of coke; b.
sealing said vessel sufficiently to contain steam at superatmospheric pressure; c.
spraying water radially outwardly into said batch of coke through a plurality of nozzles disposed within and surrounded by said batch of coke to directly quench said coke and produce steam; d.
when said steam has reached a predetermined level of superatmospheric pressure, opening a steam discharge valve and delivering steam from said vessel through said valve at superatmospheric pressure; e.
when said quenched coke has fallen to a predetermined temperature, discontinuing said spraying, closing said steam discharge valve, and opening a steam vent valve to release the pressure in said vessel; and f.
after the pressure in said vessel has fallen to approximately atmospheric pressure, discharging said batch of coke through the bottom of said vessel.
2.
The process of claim 1, wherein step (c) comprises spraying said water from a plurality of vertically disposed nozzles through a perforated inner cylinder disposed within said batch of coke, and wherein said steam at superatmospheric pressure that evolves from quenching said coke passes radially inwardly into the interior of said inner cylinder and then into an outlet steam pipe connected to said steam discharge valve.
3.
The process of claim 2, further comprising supporting said batch of coke during quenching on an intermediate hopper disposed above the bottom of said vessel, and equalizing the pressure in said vessel above and below said intermediate hopper.
4.
The process of claim 2, further comprising removing particulate matter from said superatmospheric steam after said steam has been discharged from said vessel
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Semiconductor manufacture 
