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Optimization of a multiple Effect Evaporator System

Optimization of a multiple Effect Evaporator System

2.1.3.2 Falling film evaporators 8 2.1.3.3 Rising falling film evaporators 8 ... concentration of weak black liquor. It consists of seven effects. The feed flow sequence considered is backward and the system is supplied with live steam in the first two effects. 3

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Black Liquor Evaporation - TAPPI

Black Liquor Evaporation - TAPPI

3 5 Evaporation Technologies Task of the evaporator Take a waste stream (WBL) and turn it into fuel (SBL) for the recovery boiler Condense steam (or vapors) on one side of a heating surface while boiling liquor on the other side Process governed by the heat transfer law Q = U x A x ΔT 6 Evaporation Technologies “Q”: Heat exchange amount which can be accomplished

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An analysis of black liquor falling film evaporation

An analysis of black liquor falling film evaporation

Apr 01, 2004 A computational model is developed to investigate fundamental flow physics and transport phenomena of evaporating wavy-laminar falling liquid films of water and black liquor. The computational model… Expand 14 PDF View 1 excerpt, cites background Save Alert Modeling and simulation of multiple effect evaporator system G. Gautami Engineering 2011

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Heat transfer for falling film evaporation of industrially relevant ...

Heat transfer for falling film evaporation of industrially relevant ...

Apr 14, 2015 In many industrial applications, falling film evaporation is an attractive technique for solvent removal due to high heat transfer and low residence times. Examples are the powder production in the dairy industry and in kraft pulp production process to remove water from so called black liquor. Common for both applications is that the fluids exhibit high viscosities in …

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Evaporation System: Types and Design Aspects

Evaporation System: Types and Design Aspects

boiling at lower part of the tube. The LTV evaporators are commonly used in concentrating black liquors in the paper and pulp industries. 4. Falling Film Evaporators In a falling film evaporator, the liquid is fed at the top of the tubes in a vertical tube bundle. The liquid is allowed to flow down through the inner wall of the tubes as a film.

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[PDF] Simulation of flat falling film evaporator system for ...

[PDF] Simulation of flat falling film evaporator system for ...

Dec 22, 2008 DOI: 10.1016/J.COMPCHEMENG.2008.05.012 Corpus ID: 39933624; Simulation of flat falling film evaporator system for concentration of black liquor @article{Bhargava2008SimulationOF, title={Simulation of flat falling film evaporator system for concentration of black liquor}, author={R. Bhargava and Shabina Khanam and B. Mohanty …

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Delta Separations Falling Film Evaporator FFE- 60 Gal

Delta Separations Falling Film Evaporator FFE- 60 Gal

Falling Film Evaporator - FFE Series Ethanol Evaporation System The innovative FFE Series falling film evaporator is ideal for botanical oil separation and ethanol alcohol recovery from your extracted biomass tincture. The system maintains a high evaporation rate, which significantly increases the throughput of crude oil production, eliminating the need for multiple large rotary …

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Kadant Fiber Processing - Heat Transfer

Kadant Fiber Processing - Heat Transfer

Falling Film Evaporators Kadant evaporators are perfectly suited for liquor concentrations below first critical solids (between 45-55%TS) and are specifically designed to reduce foaming. They offer high turndown capabilities which provide operating flexibility and feature efficient condensate segregation through special baffling and our unique ...

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Evaporation Technology

Evaporation Technology

Falling film evaporators Vertical shell-and-tube heat exchanger, with integrated wrap-around, monobloc-type or laterally arranged separator Functional principle The liquid to be concentrated is fed to the top of the heating tubes and distributed so that it flows down as a thin film on the inside of the tube walls.

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Plate Falling Film Evaporator - GIG Karasek

Plate Falling Film Evaporator - GIG Karasek

In the case of the plate falling film evaporator, the medium is passed over the heating surface of the plate bundle (1) heated from the inside in order to concentrate and evaporate it. Through the distribution cup (2) ensures uniform loading of all heating elements. The circulation pump (3) and the recirculation lines (4) convey the medium in a ...

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10.1016/j.ijheatmasstransfer.2013.07.003 10.1016/j

10.1016/j.ijheatmasstransfer.2013.07.003 10.1016/j

Jun 11, 2020 The aim of this paper was to experimentally investigate evaporating falling film heat transfer for black liquor, as an example of a fluid that can have very high Prandtl numbers, and to investigate how existing correlations, developed for

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White Paper: Evaporator Issues and Technology - Valmet

White Paper: Evaporator Issues and Technology - Valmet

Oct 31, 2018 Evaporators are used to evaporate black liquor from approximately 15% dry solids to 70-85% dry solids. ... Evaporators fall into a few categories, based on how they operate: rising film (RF) evaporators, falling film (FF) evaporators and forced circulation (FC) evaporators. In addition, all these types of evaporators can

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White Paper: Evaporator Issues and Technology

White Paper: Evaporator Issues and Technology

Oct 31, 2018 Evaporators are used to evaporate black liquor from approximately 15% dry solids to 70-85% dry solids. As the dry solids percentage is raised, volatile compounds are released from the black liquor and separated from the condensate, which then gets collected for reuse in the mill reducing the demand for incoming water.

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Falling Film - an overview ScienceDirect Topics

Falling Film - an overview ScienceDirect Topics

The black liquor is introduced at the top of the evaporator and flows down the opposite side of the metal plates where the dimples help spread the black liquor into a thin film. The falling film plate design allows for selective condensation of the vapors boiled from the black liquor of previous effects.

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Fundamental modeling and control of falling film evaporators

Fundamental modeling and control of falling film evaporators

The first is to develop a rigorous distributed parameter model of the falling film evaporator using the fundamental principles of mass, energy, and momentum conservation. The second is to synthesize an effective control structure for the evaporator and the evaporator plant. A bench-scale experiment has shown that one-dimensional distributed ...

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