electrical networks. These subcontracting companies will work for a 

 principal contractor who often designs the facilities and then inspects 

 and supervises the construction. The principal contractor is responsible 

 to the sponsor which is usually one or a group of companies. 



Operation 



Current water requirements for a representative complex approximate 

 24 million gallons per day (Table 19). Water requirements should decrease 



Table 19. Estimated Water Requirements for a Representative 

 Petrochemical Complex (Source: Reference 48) 



Plant 



Annual Output 

 (Million lbs) 



Current Makeup 



Requirements 



(Millions GPP) 



Orthoxylene 

 Toluene ) 

 Xylenes > 

 Benzene / 

 Styrene 

 Ethyl benzene 



139 



2150 



380 

 87 



0.4 



1.8 



3.0 

 0.5 



Ethylene 

 Propylene 

 Butadiene I 

 Butyl ene / 



1560 

 194 



6.0 

 0.5 



Cumene 

 Phenol 

 Acetone; 



520 



0.8 



Polyethylene 



Ethylene Glycol 



Vinyl Chloride Monomer 



Polypropylene 



Oxo Alcohols 



Acrylonitrile 



Cyclohexanone 



90 

 200 

 500 



70 

 245 

 100 

 237 



0.3 

 1.6 

 4.0 

 0.2 

 1.3 

 1.9 

 1.6 



TOTAL 



6472 



24 (approx.) 



197 



