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Chemical - Occupations Duties

View related occupations duties grouped under the 'chemical' business sector.
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Absorption Operator

  • Control equipment that absorbs gases liquids into water or other solvents to produce chemicals, like hydrochloric acid or ammonium hydroxide
  • Start pumps, turns valves and observes flowmeters to control concentration, flow, temperature and quantity of coolant, gas, liquid and absorbing liquor through cooling absorption towers
  • Turn valves to regulate feed of solution produced & rate of steam to purge boilers and condensers to separate impurities from solution and obtain product of designated strength specific gravity
  • Draw sample and tests specific quality and acidity, using hydrometer pH meter, or submits sample to laboratory for analysis
  • Pump solution between equipment storage tanks or tank cars
  • Maintain log of instrument readings, test results, and shift production
  • May be designated according to solution produced as Ammonium-Hydroxide Operator chemical , Aqua-Ammonia Operator chemical , Hydrochloric-Acid Operator chemical .

Acetylene cylinder packing Mixer

  • Tend mixing machine, autoclave, and drier to mix, pack, solidify, and dry asbestos, dirt, charcoal, lime, water, and other ingredients to form absorbent packing for compressed acetylene gas
  • Meter out water powdered ingredients and dumps them into mixer
  • Start agitator to mix ingredients for specified period of time
  • Open chute to transfer mixture to vibrator
  • Clamp cylinders to vibrator, and connects funnels packing rods to cylinders
  • Start vibrator and rods that sift pack mixture into cylinders
  • Weigh cylinders to ascertain amount of mixture packed
  • Roll cylinders into autoclave, and turns valve to specified pressure level to solidify packing
  • Roll cylinders into drier, and turns thermostat to heat cylinders
  • Install valves safety plugs on cylinders, and places them on scale
  • Connect acetone feedlines to cylinders, using handtools, and turns valves to fill cylinders with acetone, according to specifications.

Acetylene plant Operator

  • Tend generating equipment that processes calcium-carbide crystals water into acetylene gas
  • Turn valves, level gauge and thermostat to raise and heat water to prescribed level temperature in generator
  • Dump specified quantity of calcium-carbide crystals into hopper, bolts in cover and starts generator
  • Open hopper gate starts vibrator that sifts crystals into generator
  • Record amount of time consumed during operation cylinder shipping data
  • May ascertain level of acidity or alkalinity of gas with litmus paper, and test filled cylinders for leaks by brushing on chemical solution
  • May fill cylinders with compressed gas [Cylinder Filler chemical ].

Acid plant Helper

  • Tend furnace, absorber, cooler, scrubber, and auxiliary equipment used in producing phosphoric acid by oxidation hydration of elemental phosphorus
  • Patrol work area, observes water levels in scrubber, venturi-duct pan and cooling-tower basin, and reads flowmeter pressure gauges on phosphorus pump, fans and blower to verify process conditions
  • Record or calls readings to operator
  • Observe flow of cooling water over top outer walls of furnace to make sure uniform distribution, and notifies operator of malfunction
  • Take sample of cooling water for laboratory alkalinity test
  • Turn valves to transfer acid to specified storage tanks and to start stop water sprays in absorber, as directed, to control acid strength
  • Remove and replaces screens filters, using wrenches
  • Open valves to flush phosphorus pump and water-treating equipment with steam regenerative chemicals.

Acid polymerization Operator

  • Tend batch still and polymerization vessel to distill polymerize acrylic acid used in production of plastics
  • Tend laboratory-type batch still to vaporize condense acrylic acid [Batch-Still Operator chemical I]
  • Measure amount of distillate, using burette or gauging rod and pours distilled acid into water-jacketed polymerization vessel
  • Heat vessel to prescribed temperature, and adds specified quantity of reagents to effect polymerization
  • Draw samples of product for laboratory analysis
  • Turn valves to transfer polymerized acid to storage or processing areas.

Acid Purifier

  • Tend equipment that filters acid liquor from slurry dehydrates residual materials for further processing
  • Open feed valves starts rotary drum that filters liquor from slurry
  • Turn valves to transfer residue to dehydration unit
  • Adjust controls to regulate temperature, pressure, and speed of material flow as specified to dry residue
  • Collect samples of acid liquor residual materials for laboratory analysis
  • May be designated according to material processed as Phthalic-Acid Purifier chemical .

Acid Supervisor

  • Supervise coordinates activities of workers engaged in operation of equipment to process, store, and mix acids for use in making explosives, like nitroglycerin, Tnt, and dynamite
  • Train workers in operation of equipment
  • Inspect equipment observes workers to make sure safe work practices
  • May supervise production of ammonium nitrate crystals drying of dynamite-filler ingredients
  • Perform other duties as described under Supervisor any industry Master Title.

Alum Mixer

  • Control equipment to produce alum liquor aluminum sulfate in continuous process reaction of sulfuric acid with powdered bauxite
  • Notify other workers to unload bauxite from boxcars into hopper of crusher
  • Start crusher, mill and conveyors to replenish storage supply of powdered ore
  • Observe flowmeters and turns valves to regulate flow of powdered ore, acid, and weak alum liquor into first digester in specified proportions to produce mixture of prescribed specific gravity and through other digesters where chemical reaction occurs and resultant aluminum sulfate liquor is settled diluted to specified concentration
  • Test samples from each digester, using hydrometer and thermometer, to verify specific gravities temperatures
  • Turn valves to adjust flow of steam through digester jackets and proportions of materials fed into first digester to regulate temperatures specific gravities accordingly
  • Pump finished alum liquor into storage tank weak alum liquors into settling tanks thickeners for recycling into process
  • Record temperatures, specific gravities, and flow rates of materials in operating log level of alum liquor storage tanks on inventory records.

Alum plant Operator

  • Control equipment to produce alum liquor aluminum sulfate in continuous process reaction of sulfuric acid with powdered bauxite
  • Notify other workers to unload bauxite from boxcars into hopper of crusher
  • Start crusher, mill and conveyors to replenish storage supply of powdered ore
  • Observe flowmeters and turns valves to regulate flow of powdered ore, acid, and weak alum liquor into first digester in specified proportions to produce mixture of prescribed specific gravity and through other digesters where chemical reaction occurs and resultant aluminum sulfate liquor is settled diluted to specified concentration
  • Test samples from each digester, using hydrometer and thermometer, to verify specific gravities temperatures
  • Turn valves to adjust flow of steam through digester jackets and proportions of materials fed into first digester to regulate temperatures specific gravities accordingly
  • Pump finished alum liquor into storage tank weak alum liquors into settling tanks thickeners for recycling into process
  • Record temperatures, specific gravities, and flow rates of materials in operating log level of alum liquor storage tanks on inventory records.

Alum Plant Supervisor

  • Supervise coordinates activities of workers engaged in producing alum liquor aluminum sulfate by continuous process reaction digestion of sulfuric acid with powdered bauxite ore
  • Requisition bauxite ore from other company plants schedules required delivery dates
  • Read operating reports showing temperature, specific gravity and flow-rate readings to verify specified process conditions
  • Inspect equipment for mechanical defects malfunctions
  • Train new employees in operation of equipment
  • May study technical papers to plan process improvements, and diagrams changes, using drafting instruments
  • Perform other duties as described under Supervisor any industry Master Title.

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