Fresh orange juice containing 75.0 wt% water and the balance
solids is concentrated in an
evaporator. In order to improve the taste of the orange juice, a
fraction of the feed stream is diverted
around the evaporator as a bypass stream and mixed with the outlet
stream from the evaporator.
The combined product stream (= outlet stream from evaporator +
bypass) contains 65 wt% solids
and the balance water. Ninety percent of the water in the feed
entering the evaporator is evaporated
as water vapour. Calculate the amount of concentrate produced per
300-kg/h fresh juice fed to the
process, and the fraction of the feed that bypasses the
evaporator
Fresh orange juice containing 75.0 wt% water and the balance solids is concentrated in an evaporator....
Fresh graph juice contains 12.0 wt% solids and the balance water, and concentrated graph juice contains 42.0 wt% solids. Initially a single evaporation process was used for the concentration, but volatile constituents of the juice escaped with the water, leaving the concentrate with a flat taste The current process overcomes this problem by bypassing the evaporator with a fraction of the fresh juice. The juice that enters the evaporator is concentrated to 58 wt% solids, and the evaporator product stream...
please solve this questuon
Fresh orange juice contains 13% solids and rest water. It is concentrated to contain 45% solids. In the present process, the evaporator is bypassed with a fraction of fresh juice. Juice that enters the evaporator is concentrated to 60% solids and is mixed with bypass juice to achieve the desired final concentration. Calculate the amount of final juice per kg of fresh juice fed to the process and the fraction of the feed in percentage that...
Fresh orange juice contains 12.0 wt% solid and the water, and concentrated orange juice contain 42.0 wt% solids. Initially a single evaporation process was used for the concentration, but volatile constituents of the juice escaped with the water, leaving the concentrate with a flat taste. The current process overcomes this problem by bypassing the evaporator with a fraction of the fresh juice. The juice that enters the evaporator is concentrated to 58 wt% solids, and the evaporator product stream is...
Fresh orange juice contains approximately 10.0 wt% solids (sugar, citric acid and other indigenous ingredients) and frozen concentrate contains approximately 42.0 wt% solids. The frozen concentrate is obtained by evaporating water from the fresh juice to produce a mixture that is approximately 61.0 wt% solids. However, so that the flavor of the concentrate will closely approximate that of fresh juice, the concentrate from the evaporator is blended with fresh orange juice (and other minor additives) to produce a final concentrate...
Engineers Sophia and Giles are modifying a process to make concentrated apple cider starting from a slurry - a slurry is a mixture of solids in a liquid that can normally be pumped. A slurry made with apples having a mass fraction of 0.462 and the balance water is fed to a juicer at a rate of 31.7 kg/min. Seventy percent of the apples entering the juicer leave as part of the solid waste stream (containing apples and water). The...
4. In the production of soybean oil, beans containing 18.0 wt% oil and 82.0 wt% solids are ground and fed to a stirred tank (also called an extractor), along with a stream of liquid n containing recycled hexane and fresh hexane. The feed ratio is 4.2 kg hexane/kg beans. ground beans are suspended in the liquid, and essentially all of the oil in the beans is ex into the hexane. The stream exiting the extractor (also called the effluent) passes...
An evaporator is used to concentrate a weak NaOH solution (in water) from 3 wt% to 18 wt% by removing water. Feed to the evaporator consists of the 3 wt% NaOH (ag) solution and is fed at a rate of 2 tons/day. What is the final 18% Product stream that is produced in lbm/day? Show all work and sketch a diagram D Focus
Fresh air containing 5.00 mole % water vapor is to be cooled and dehumidified to a water content of 2.13 mole % H2O. A stream of fresh air is combined with a recycle stream of previously dehumidified air and pass through the cooler. The blended stream entering the unit contains 2.88 mole % H2O. In the air conditioner, same of the water in the feed stream is condensed and removed as liquid. A fraction of the dehumidified air leaving the...
*Problem 4.48 Bean Oil Extraction In the production of a bean oil, beans containing 12.0 wt% oil and 88.0% solids are ground and fed to a stirred tank(the extractor) along with a recycled stream of liquid n-hexane The feed ratio to the extractor is 3.00 kg hexane/kg beans. The ground beans are suspended in the liquid, and essentially all of the oil in the beans is extracted into the hexane. The extractor effluent passes to a filter where the solids...
1. There are several evaporators, including agitated film evaporator, long-tube evaporator, short-tube evaporator, and horizontal-tube evaporator. For (a) juice and (b) paste, suggest proper evaporator and explain why you select it. 2. A double-effect forward-feed evaporator is used to evaporate a sugar solution containing Swt solids to a concentrated solution of 25 wt%. The boiling-point rise (BPR) of the solution (independent of pressure) can be estimated from BPRC-1.5x + 6x", where x is wt% of sugar in solution. Saturation steam...