| Job Title |
Benzene-washer Operator |
| Job Description |
Controls Agitator Tank To Wash (mix) Benzol, Benzene, Toluene,
And Xylene With Sulfuric Acid And Caustic Soda To Remove
Impurities: Turns Valves And Starts Pumps To Charge Agitator
Vessel With Specified Amount Of Benzol Or Derivatives. Drains
Measured Quantity Of Acid Into Vessel And Starts Agitator To Mix
Contents For Specified Time. Stops Agitator To Allow Acid And
Sludge To Settle. Draws Sample Of Washed Product For Laboratory
Colorimetry Test To Determine Need For Further Washing. Opens
Valve, Using Wrench, To Drain Excess Acid And Sludge, Adds
Caustic Soda Solution To Neutralize Remaining Acid, And Measures
Alkalinity, Using Standard Titration Test. Adds Water, Agitates
Mixture To Wash Out Traces Of Caustic, And Drains Off Water
After Contents Have Settled. Pumps Washed Benzol Or Derivatives
Into Storage Tank. Turns Valves To Admit Steam To Sludge Kettle,
Solidifying Sludge. Lifts Kettle Cover, Using Chain Hoist, And
Removes Sludge From Kettle. May Distill Washed Benzol In Batch
Still [batch-still Operator (chemical) I]. May Remove Impurities
From Crude Ethylbenzene By Adding Lime And Water And Agitating
Mixture.
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