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Design the manufacture of ( tones/day) Ferrous sulphate monohydrate from waste pickle liquor.
Pickling is generally associated with the removal of scale with mineral acid. Sulphuric acid is the most commonly used pickling acid. The spent pickle liquor generally contains about 15 to 20 % ferrous sulfate and about 2 to 5 % sulphuric acid. This spent liquor is first neutralized with excess iron in a neutralization tank and then filter of excess iron. The solubility of ferrous sulfate increases up to 65 degree C and then decreases where ferrous sulfate exists as monohydrate. At ordinary low temperatures, it exists as ferrous sulfate heptahydrate. An evaporative crystallizer is used to produce ferrous sulfate monohydrate which operates at 65%.After separation of crystals, the mother liquor is recycled back to neutralization tank.
Prepare a design report consisting of the following:
1. Detailed flow sheet
2. Material and energy balance
Plot the fraction of ferrite, austenite, and cementite in equilibrium alloy containing (a) 0.6% C (b) 0.8% C and (c) 1.2% C as a function of temperature (25 C to 1400 C). What is the percentage of pearlite (eutectoid) in the above three cases at ro..
oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9 sulfur trioxide. a.
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Consider that you are a senior consulting engineer and that you need to explain the topic in a written report to your customer, who is the managing director of a large company, and a commerce or law graduate.
A continuous filter is used to separate a clear filtrate from alumina particles in a slurry. The slurry has 30% by weight of alumina (specific gravity of alumina = 4.5). The cake retains 5% by weight of water. For a feed stream of 1000 kg/hr, determi..
Explain what is meant by the term Threshold Limit Values (TLVs). Describe briefly the different TLVs used by Industrial Hygienists. Outline the strengths and weaknesses of these occupational exposure limits and illustrate how they may best be u..
Mass of Compound Needed to Prepare 1 oz of a 10% Solution Hydroquinone, USP
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process principles assignment production of formaldehydeworld formaldehyde production is estimated to be about 8
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In the direct steelmaking reactor based on the reduction of an oxidizing foaming slag by char (carbon) particles and droplets of iron containing 2% carbon. Estimate the total surface area of char and iron droplets needed to achieve the smelting ..
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