How does a double effect evaporator work?

How does a double effect evaporator work?

In a multiple-effect evaporator, vapor from one body heats a second body at a lower boiling temperature. The first effect is heated directly with steam, and the additional bodies are ordered based on descending boiling temperature (or pressure).

What are the advantages of double effect evaporator?

Major Advantages of RDG Multi-effect systems: Reduced energy required to run full system. Reduced condensing load with additional effects (less cooling water needed) Liquor flow control. Convenient foul condensate collection and processing.

What is the multiple-effect evaporator under vacuum?

A multi-effect vacuum evaporator consists of a set of interconnected evaporators where the first effect is the first evaporator, and so on. Using a multiple effect evaporator, the operation is based on the steam produced in one effect being used as the heat source for the following effect.

How is evaporation used in industry?

Evaporation is also used to concentrate liquid foods such as noodles and make condensed milk, the product of a process that removes water from milk. Similarly, pharmaceutical companies use evaporators to remove excess moisture from drugs, thus improving product stability.

What is Mee in chemical industry?

JP CHEM TECH | MEE Plant Chemicals Manufacturers Ahmedabad, Gujarat, India. We JP Chem Tech are one of the known Mee (Multiple Effect Evaporators) Plant Chemicals manufacturers in Ahmedabad, India. This Mee Plant Chemicals are used for heat obtained from steam in order to evaporate water.

How many types of mee plants are there?

Multi Effect Evaporator [MEE] Types of industrial evaporators: Falling Film Evaporator. Forced Circulation Evaporator. Rising Film Evaporator.

How does a vacuum evaporator work?

The vacuum evaporation treatment process consists of reducing the interior pressure of the evaporation chamber below atmospheric pressure. This reduces the boiling point of the liquid to be evaporated, thereby reducing or eliminating the need for heat in both the boiling and condensation processes.

Which evaporator is used in food industry?

Different types of evaporators are used in the food industry including batch-type, natural circulation, rising-film, falling-film, rising/falling-film, and agitated thin-film evaporators. Heat and mass balances are used in calculations to design single- and multiple-effect evaporators.

What is Mee and ATFD?

SALT DRYER & ATFD UNIT It Is used to evaporate the residue water from MEE concentrated liquid and generate dry salt for dispose. MEE concentrated liquid have large amount of water content which is not possible to dispose so salt dryer is used after MEE to reduce water content from MEE concentrated liquid.

What is Calandria evaporator?

Definition of calandria (Entry 1 of 2) : a heating element of an evaporator especially : a part of a vacuum evaporating system in which the liquid to be concentrated rises through tubes surrounded by steam and descends through a central well.

What are the two evaporator styles?

Evaporator Types. The two general types of evaporators used in today’s refrigeration systems are flooded evaporators and dry, or direct expansion (DX), evaporators.

What is a mee in industry?

Multiple-Effect Evaporator (M.E.E.) Working Principle Evaporators are kind of heat transfer equipments where the transfer mechanism is controlled by natural convection or forced convection. A solution containing a desired product is feed into the evaporator and it is heated by a heat source like steam.

What pressure is vacuum?

Vacuum can refer to any pressure between 0 PSIA and 14.7 PSIA and consequently must be further defined. For applications concerned with measuring vacuum pressures over this full range, two different approaches are often taken. Vacuum pressure is measured relative to ambient atmospheric pressure.

Why most of the food industry prefer evaporation under vacuum?

To keep boiling point of liquid food as low as possible, the evaporators are operated under vacuum, because reduced pressure reduces the boiling point temperature. As the boiling point temperature reduces, the thermal degradation to foods minimizes.

What is the use of ATFD?

ATFD systems are used in Pharma Industries, Textile Industries, Agro Chemicals Industries , Sugar Industries And Effluent Treatment Plant. Drying of products, Drying of concentrated liquid for salt recovery, Drying of Chemical and petro chemical products to recover the powder.