Provide a control design loop $+$ select the mainplated and control variables $,$ indicate if each cotroller as direct acting or reverse acting with explainlation $,$ Select feedback $,$ cascade $,$ or ratio control configuration for each loop ; cascde will use when

manipulating a liquid flow rate.

Provide logic digram for each loop

All that should be for the design all the points :

$$ Select an appropriate point to control the production rate $"$ this is feedback flow control"

$$ Control the temperuter of hydrocarbon residue entering the partial oxidation reactor $($ stream $2)$

$$ Control carbon dioxide content of the partial oxidation reactor exit stream $($ stream $6)$

$$ Control temperture in partial oxidation reactor

$$ Control tempertuare in quench tank

$$ Control H$2$:CO ratio in stream $14$

$$ Control the liquid level in the knockout drum

$$ Control temperture of the feed to the methanol sysnthesis reactor $($ stream $24)$