C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
48/43
C10J 3/46 (2006.01) C01B 3/36 (2006.01)
Patent
CA 1200103
TRIM CONTROL FOR PARTIAL OXIDATION GAS GENERATOR (D#73,824-F) ABSTRACT Trim control of a partial oxidation gas generator for the production of synthesis gas, reducing gas, or fuel gas is effected by two improved control schemes which are automatically operated separately or in sequence. The control systems include sensors sensing the flow rate of the feedstreams and analyzers which provide signals corresponding to the wt.% carbon in the effluent gas quench cooling and scrubbing water for use in controlling the particulate carbon in the effluent gas stream, and/or signals corresponding to the mole fraction of CH4 (dry basis) in the cooled and cleaned effluent gas stream for use in controlling the temperature in the reaction zone. The signals from the sensors and analyzers are provided to the system control unit which computes values that represent the relative difference between the actual and desired carbon-make and/or the actual temperature in the reaction zone, and the relative difference between the actual and desired temperature in the reaction zone. The actual temperature is determined as a function of the methane concentration. These values are automatically compared with set point values and when adjustments are necessary, signals from the system control unit are provided to a flow rate regulating means which adjusts the flow rate of the free-oxygen containing gas by a small determined amount for control of the particulate carbon and/or to a flow rate regulating means which adjusts the flow rate of the temperature moderator by a small determined amount for control of the temperature in the reaction zone. When the computed adjustment for either stream requires increasing or decreasing the flow rate greater than by a specified amount then no adjustment is made to the flow rate controller but a high or low level alarm is actuated to alert the plant operator. - I -
418117
Brent Albert
Dille Roger M.
Middleton Leigh R.
Robin Allen M.
Smart & Biggar
Texaco Development Corporation
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