Multiple Effect Evaporator Dealers

Evaporation deals with the concentration of a non-volatile Solute from a solution by the removal of required amount of volatile solvent. Usually the solvent is water. By vaporizing a part of the solvent, useful product i.e. the concentrated solution or thick liquor is produced and the Vapor is discarded. Lung tube evaporators are usually used for the concentration of foamy liquids. The set-up is consists of two evaporators fitted in series. Each is made up of Stainless Steel tubes surrounded by a Stainless Steel jacket and fitted with accumulator. Dilute solution is feed to the first evaporator. Steam from. a steam generator is supplied to evaporator to concentrate the dilute feed solution to a desired level. The jacket is fitted with a steam trap and the condensate is collected at the end of trap. The vapors of volatile solvent produced in first evaporator are supplied to the second evaporator. The vapors of volatile solvent are condensed in a shell & tube type condenser and the balance non-volatile solute collected in the accumulator is recycled through the evaporator.

Being a client centric firm, we understand the value of our customers’ hard efforts in procuring the various accessories for a MULTIPLE EFFECT EVAPORATOR project. Understanding such concerns and value of our customers’ efforts, we have been taking complete turnkey projects also, so that our customers have a total solution for their MULTIPLE EFFECT EVAPORATOR Projects and they enjoy a single and reliable source of supply. In the evaporation process, concentration of a product is accomplished by boiling out a solvent, generally water. The recovered end product should have optimum solids content consistent with desired product quality and operating economics.

We offer multi effect evaporators. evaporators are thermal concentrators for concentrating dilute liquid for increasing the solids content and for reducing volume of evaporating liquid, widely used for the concentration of liquids in the form of solutions, suspensions and emulsions.

In order to recover the clean condensed water and enable its reuse from the RO rejects and ETP solution we offer Multi effect evaporators. The system is used to reduce the water loss through double or triple Effect Combination Evaporator with one falling film type and one forced circulation type evaporators. The material of construction for all liquid contact parts in SS304 and Calandria tubes of SS304. All vapor and condensate contact parts will be in M.S.Complete system will be under pressure at 3 kg/cm2( g).and consists of following components : Feed Pump : A centrifugal direct driven pump is used for transferring the feed solution from the balance tank to the Calandria. The pump is provided with a single mechanical seal and electrical motor. All contact parts with liquid will be in S.S.304. Calandria  : This Calandria is essentially a vertical shell and tube type vertical heat exchanger and is designed as per the Falling film /forced circulation principle. Steam is provided on the shell side and feed solutions is passed through tubes. The tubes of Calandria are of 25.4/ 31.75 mm OD. Adequate no. of tubes 4/6 M length are provided for the heat transfer duty.  The tubes are welded on the tube sheet.  The shell has nozzles for steam/vapor inlet and outlet, and temperature gauge. All Contact parts with liquid will be in S.S.304. Tubes will be of S.S.304. Thermic fluid/Steam and other non-contact parts will be in M.S. Vapor Separator : In vapor separator, the heated liquid coming from the Calandria is flashed. Saturated vapors coming out from top are sent to the next Calandria/condenser. Liquid concentrate coming out from bottom is withdrawn as feed to next Calandria/ as product. The separator shell has sight and light glass for viewing the concentrate level. Material of construction for all contact parts with liquid and vapor will be S.S.304 and non-contact parts will be in M.S. Re-circulation Pump : This pump is provided for re-circulation of slurry inside the heat exchanger, so as to increase the velocity of liquid inside the tubes and to get the required heat transfer. This is a Centrifugal Pump with double mechanical seal and motor. Contact parts will be in S.S.304. Concentrate outlet will be taken out from recirculation pump so the discharge head will be at around 5-6 meter only. Condenser is used to condense the evaporation rate at the outlet of system. It also consist of condensate pot, condensate pump and vacuum pump.

Multiple Effect Evaporators makes efficient utilization of heat from steam for evaporation and finds application in sugar mills. Apart from this work area, these evaporators also find use in industrial sectors like pharmaceutical & drug industries, textile dying, pulp mills and others that generate high quantity of toxic effluents having over limits of BOD, COD, TS and TDS level with black colored and odor effluent.

A multiple-effect evaporator is an apparatus for efficiently using heat from steam to evaporate water. In a multiple-effect evaporator, water is boiled in a sequence of vessels, each held at a lower pressure than the last. Because the boiling temperature of water decreases as pressure decreases, the vapor boiled off in one vessel can be used to heat the next, and only the first vessel (at the highest pressure) requires an external source of heat and thus saves energy and overall operational cost.

Evaporator differs from crystallizers in which evaporation is concerned with concentrating a solution rather than producing or building crystals. Evaporation is distinguished from drying giving always liquid residue. Paramount offer multiple effect evaporator as stand alone process unit and also for treatment of RO concentrates to achieve zero liquid discharge in Wastewater treatment plant.

A multiple-effect evaporator is an apparatus for efficiently using the heat from steam to evaporate water. In a multiple-effect evaporator, water is boiled in a sequence of vessels, each held at a lower pressure than the last. Because the boiling temperature of water decreases as pressure decreases, the vapour boiled off in one vessel can be used to heat the next, and only the first vessel (at the highest pressure) requires an external source of heat. While in theory, evaporators may be built with an arbitrarily large number of stages, evaporators with more than four stages are rarely practical except in systems where the liquor is the desired product such as in chemical recovery systems where up to seven effects are used. An evaporator is essentially a heat exchanger in which a liquid is boiled to give a vapour, so that it is also, simultaneously, a low pressure steam generator. It may be possible to make use of this, to treat an evaporator as a low pressure boiler, and to make use of the steam thus produced for further heating in another following evaporator called another effect.

A Multi Effect Evaporator, as defined in chemical engineering, is an apparatus for efficiently using the heat from steam to evaporate water. In a multiple-effect evaporator, water is boiled in a sequence of vessels, each held at a lower pressure than the last. Because the boiling temperature of water decreases as pressure decreases, the vapor boiled off in one vessel can be used to heat the next, and only the first vessel (at the highest pressure) requires an external source of heat. While in theory, evaporators may be built with an arbitrarily large number of stages, evaporators with more than four stages are rarely practical except in systems where the liquor is the desired product such as in chemical recovery systems where up to seven effects are used.

We sternly keep a check on the designing and manufacturing of products and ensure that the material is strictly procured from the leading names only. The raw material is examined on the grounds of quality to deliver finest range of products. Owing to our timeliness and hassle free deliveries, we have become the primary choice of the buyers.

Carrying an enormous experience of over a decade in designing and manufacturing of Multiple Effect Evaporators, Shail Vac has emerged as a reliable and trustworthy name in the national and international market. Our modern production facilities, engineering excellence and highly experienced and dedicated team of engineers and technicians have made us capable of supplying wide range of Multiple Effect Evaporators in the markets.