Multi column Distillation Plant for WFI
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Multi Column Distillation Plant is based on FINN-AQUA design. It consist of specially designed columns which make optimum use of the principles of inter stage heat exchange (Multi effect distillation method) to produce pure pyrogen free sterile distilled water for injectables as per IP/BP specification. The vapour with high velocity and under pressure passes over a SPECIALLY DESIGNED SPIRAL BAFFLE system which develops tremendous centrifugal force and thus eliminates any chances of pyrogens carry over in the vapours.
To industries where 100% pure Pyrogen - free water-for injection plays role, Multicolumn Distillation Plant is the perfect solution. Available in capacities ranging, the Multicolumn Distilled plant is used for its economy, low maintenance and low operation costs.
By Multi Effect Distillation method significant energy (75% approx) is saved when compared to the conventional method. All contact parts are made out of AISI 316 quality stainless steel and mirror polished. All pipes and tubes are essentially seamless. |
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Operation :
The pre-heated feed water (through condenser) is fed into the first column where 33% of feed water is converted into steam under pressure by outside boiler steam. The pure steam produced in the first column having temperature of 135 degree Celsius and the remaining feed water goes to the 2nd column. The pure steam is used as a heating media in the 2nd column and converts part of remaining feed water into steam. In the process the steam itself condenses back into water. This process is repeated till the last columns each working at low temperature & pressure as compared to the one before it. The steam produced in the last column is condensed in the condenser by feed water as well as cooling water. As external heat is required only to convert the 33% of feed water, the heating energy required is reduced by 67%.
CONSTRUCTION DETAILS
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Distillation column houses the heat exchanger & pyrogen separation system.
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Heat exchanger in first column with Double Tube Sheet Design as per USP requirement.
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Common condenser at the end of distillation process to condense steam & separate gas from distillate
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Vent on the condenser is with 0.2 micron bacteria retentive filter for safe shut down.
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All seamless pipe with orbital welding inspected by boroscopic procedure.
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Designing is as per ASME std. All surface finish better than 0.3 Ra.
SALIENT FEATURE
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Total energy saving is 75% as less heating energy and less cooling water is required.
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Pyrogens are removed by centrifugal force developed & specially designed spiral baffle.
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All contact parts are s.s.316 quality. All pipes and tubes are seamless and gaskets made form teflon.
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Distillate Temperature is quite high.( 90-95')
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Distilled water as per IP/BP standards and conductivity less than 1 micromhos/cm.
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Online temp. monitoring of WFI
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Conductivity monitoring and control for feed water & WFI
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Automatic feed water control to prevent column flooding.
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