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Texto de pré-visualização
45 The flowchart of a steadystate process to recover crystalline potassium chromate K2CrO4 from an aqueous solution of this salt is shown below Fortyfive hundred kilograms per hour of a solution that is 13 K2CrO4 by mass is joined by a recycle stream containing 3636 K2CrO4 and the combined stream is fed into an evaporator The concentrated stream that leaves the evaporator contains 494 K2CrO4 this stream is fed into a crystallizer in which it is cooled causing crystals of K2CrO4 to come out of solution and then filtered The filter cake consists of K2CrO4 crystals and a solution that contains 3636 K2CrO4 by mass the crystals account for 95 of the total mass of the filter cake The solution that passes through the filter also 3636 K2CrO4 is the recycle stream Calculate the weight of water removed in the evaporator the rate of production of crystalline K2CrO4 the ratio kg recycle kg fresh feed and the feed rates that the evaporator and crystallizer must be designed to handle Ans 2950 kgh 1472 kgh crystals 125 kg recycle kg fresh feed 7180 kgh e 10 130 kgh
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Introdução à Engenharia
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Introdução à Engenharia
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Introdução à Engenharia
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Introdução à Engenharia
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Introdução à Engenharia
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Introdução à Engenharia
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Texto de pré-visualização
45 The flowchart of a steadystate process to recover crystalline potassium chromate K2CrO4 from an aqueous solution of this salt is shown below Fortyfive hundred kilograms per hour of a solution that is 13 K2CrO4 by mass is joined by a recycle stream containing 3636 K2CrO4 and the combined stream is fed into an evaporator The concentrated stream that leaves the evaporator contains 494 K2CrO4 this stream is fed into a crystallizer in which it is cooled causing crystals of K2CrO4 to come out of solution and then filtered The filter cake consists of K2CrO4 crystals and a solution that contains 3636 K2CrO4 by mass the crystals account for 95 of the total mass of the filter cake The solution that passes through the filter also 3636 K2CrO4 is the recycle stream Calculate the weight of water removed in the evaporator the rate of production of crystalline K2CrO4 the ratio kg recycle kg fresh feed and the feed rates that the evaporator and crystallizer must be designed to handle Ans 2950 kgh 1472 kgh crystals 125 kg recycle kg fresh feed 7180 kgh e 10 130 kgh