Edible oil refinery plant that turns crude oil into RBD edible oil, offered in 3, 5, 10, 15 and 30 TONS refining capacity per 24 hours. Oil from old or rotten seeds runs high in acid and develops a bad odour, and refining removes these impurities. Refining runs in three basic stages. In the neutralizer, caustic soda removes Free Fatty Acids (FFA) while thermic fluid coils heat the oil to about 60 °C and a stirrer mixes it; the soap stock settles and is drawn into a soap pan. The bleacher removes colour with carbon black and bleaching earth at about 110 °C under vacuum, and a filter press separates the earth. The deodourizer heats the oil above 110 °C, injects live steam through bottom nozzles and raises it to 220 °C under high vacuum to remove smell. A cooler and a second filter press then give completely refined, transparent, colourless oil. A thermic fluid boiler, vacuum pump, barometric condenser, catchalls and steam generator connect to the vessels through pipelines. For palm oil, a fractionation stage chills the refined oil in a crystallizing vessel with chilling pipe coils, and a filter press separates liquid palm olein (palm olene) from palm sterene cake. Its chilling plant includes a shell and tube chiller, compressor, motor, pump, condenser and control panel box. The 5 tonnes per day refinery runs 4 batches of 1250 kg each. Two neutralizers, one bleacher and one deodourizer hang from the first floor of a 14ft. x 14ft. (4.25mtr. x 4.25mtr) steel structure, 9ft. above ground, carried on 8 columns of double channel with a staircase and railings on all sides; two filter presses share that floor. Two soap pans with steam pipes and the raw and bleached oil tanks sit below. The cooler, thermic fluid boiler, two steam generators, vacuum pump, water pumps, oil pumps and refined oil tank stand around the structure, for a total of about 30ft. x 30ft. (9mtr. x 9mtr.); the space requirement for the 5 TONS size is listed as 1500 square feet. A 40ft. tower beside the deodourizer holds the barometric condenser. Pipelines are colour coded: oil yellow, vacuum blue, steam black, water white and thermic fluid red, with valves at all appropriate places. The neutralizer is open on top with a conical bottom and a thermic fluid coil. The bleacher, deodourizer and cooler have dished ends on both sides and double pipe coils: thermic fluid and cooling water in the bleacher, thermic fluid in both deodourizer coils, and cooling water in both cooler coils. Steam enters the deodourizer through stainless nozzles. Every vessel has a temperature gauge, and the deodourizer, bleacher and cooler have vacuum gauges. Green conical-bottom tanks, one marked "NEUTRALISER", stand beside clad vessels on a railed steel platform, with yellow conical-bottom tanks and a motor-driven vacuum pump at ground level. Output and utilities (oil refining capacity per 24 hours · min. daily output RBD edible oil in liter · power · water in liters): 3 TONS · 2800 · 28KW · 2000; 5 TONS · 4000 · 28KW · 4000; 10 TONS · 9000 · 35KW · 8000; 15 TONS · 14000 · 50KW · 12000; 30 TONS · 29000 · 75KW · 20000 Space and manpower (space in square feet · area L x W x H in meters · manpower per shift): 3 TONS · 1500 · 14 x 12 x 6 · 2; 5 TONS · 1500 · 14 x 12 x 6 · 2; 10 TONS · 2000 · 18 x 16 x 7 · 3; 15 TONS · 2500 · 18 x 16 x 10 · 3; 30 TONS · 3000 · 18 x 16 x 12 · 4