A recycle stream is one where a portion of the outlet of a process unit is combined with fresh feed and sent into the same unit again. A bypass stream is one where a portion of the inlet to a process unit is split from the feed and instead of entering the process is combined with the outlet from that process.
What is the difference between recycle and bypass?
Recycle stream is a term denoting a process stream that returns material from downstream of a process unit back to the process unit. Bypass stream is a stream that skips one or more stages of the process and goes directly to another downstream stage.
What is the purpose of bypass stream?
One use of bypass is to obtain precise control of the output stream, as when a small wet air stream bypasses a drier so that the output humidity can be regulated.
What is chemical industry bypass?
In a chemical process a stream that skips one or more stages and joins another stream of a stage further down the process is called a Bypass Stream.
How many recycle streams are in the figure?
How many recycle streams are there in the following process? Explanation: There are two recycle streams, one from top reactor to left most reactor and other from right most to left most.
Which of the following is decreased by the bypass stream?
5. Which of the following is decreased by the bypass stream? Explanation: Bypass stream decreases the feed and increases the product.
What is a recycle reactor?
Recycle reactors are used when the reaction is autocatalytic, or when it is necessary to maintain nearly isothermal operation of the reactor or to promote a certain selectivity (see Section 5.6. … We shall define the recycle parameter R as the moles recycled per mole of product removed at point Q.
What is recycle stream?
DEFINITION. A recycle stream is one where a portion of the outlet of a process unit is combined with fresh feed and sent into the same unit again. There are several reasons one might employ a recycle stream: increase conversion of a reactant to product.
What is recycle ratio in chemical engineering?
A recycle ratio is a key profitability measure of the oil and gas industry. The ratio is calculated by dividing the profit per barrel of oil by the cost of finding and developing that barrel of oil.
Why bypass is used in chemical industry?
Judicious use of control valve bypasses can boost throughput
Squeezing the last bit of capacity from a chemical plant often provides much of the profit for the facility. … A control valve bypass gets installed to allow maintenance on the control valve without forcing the plant to shut down.
What is a process stream in chemistry?
Process stream means all reasonably anticipated transfer, flow, or disposal of a chemical substance, regardless of physical state or concentration, through all intended operations of processing, including the cleaning of equipment.
What is basis of calculation?
At a very basic level, basis is the cost of your business. The calculation of basis consists of your financial contributions into the company plus ordinary income and losses minus distributions (like dividends and other payouts).
What is Singlepass conversion?
Single-Pass Conversion = reactant input to reactor – reactant output from reactor. reactant input to reactor. ×100%
What is a fractional conversion?
The fractional conversion of a reactant is the ratio of the amount reacted to the amount fed: ➢ If no reactant is specified, then fractional conversion refers to the limiting reactant (LR).