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bayer process heat exchangers

  • Bayer process Wikipedia

    In the Bayer process, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution (caustic soda) at a temperature of 150 to 200 °C. At these temperatures, the aluminium is dissolved as sodium aluminate (primarily [Al (OH) 4] −) in an extraction process.

  • Process · Waste · History of the Bayer process · Carl Josef Bayer · Hall–Héroult Process
  • Bayer Process an overview ScienceDirect Topics

    The alumina obtained by the Bayer process is recrystallized, based on the application for which it will be used. Alumina exists in many crystal phases: α, δ, γ, η, θ, ρ, and χ, depending on the heat-treatment conditions. However, α-alumina or corundum is most thermodynamically stable form,

  • Heat Transfer in the Bayer Process SpringerLink

    Heat transfer equipment represents a significant portion of Bayer process plant capital and operating costs. Heater operation and maintenance activities can also create potential hazard exposure.

  • Author: Daniel Thomas
  • Bayer Process Heat Exchangers Cleaning Efficiency

    Fortin and Breault: Bayer Process Heat Exchangers Cleaning Efficiency Published by ECI Digital Archives, 2003. is generally added to the cleaning solution to minimize corrosion of the carbon steel tubes and the other parts in contact with the acid solution.

  • BAYER PROCESS idc-online

    BAYER PROCESS Bayer process is the process of refining alumina. from bauxite (aluminum ore containing 30- The clear liquor is pumped from the settlers to the precipitators (thickening tanks) through heat exchangers, which transfer the heat from the solution to the cold spent (processed) liquor.

  • Heat Transfer in the Bayer Process ResearchGate

    Heat transfer equipment represents a significant portion of Bayer process plant capital and operating costs. Heater operation and maintenance activities can also create potential hazard exposure.

  • Mathematical modelling of heat exchange in flash tank heat

    Precipitator area for the Bayer process. Regarding the very energy intensive character of the Bayer process, many developments, aiming at an energy demand reduction, were suggested. Thus it was suggested to re-use the low-grade heat of calcination for spent liquor evaporation [1], or to introduce a new type Spiral Heat Exchangers

  • Bayer Process: Manufacturing Of Alumina Making of Alumina

    The Bayer Process: Alumina is the main components of bauxite, so bauxite is refined in order to produce Alumina. The Bayer process is the principal way for producing alumina by refining Bauxite. Bauxite other than with 30-60percentage of aluminium oxide contains mixture of silica, iron oxides and titanium dioxide.

  • Bayer Process: Manufacturing Of Alumina Making of Alumina

    The Bayer Process: Alumina is the main components of bauxite, so bauxite is refined in order to produce Alumina. The Bayer process is the principal way for producing alumina by refining Bauxite. Bauxite

  • Heat Transfer in the Bayer Process ResearchGate

    A computer code has been written for stepwise calculation of heat transfer through multi-pass steam heated heat exchangers in the Bayer process. Based on local mass and energy balances and on a

  • FORMATION OF GIBBSITE SCALE IN THE BAYER PROCESS ON

    the Bayer Process. The accumulation of scale reduces the efficiency of heat exchangers considerably and may generate other problems such as pipe blockages and probe malfunction. Many researchers

  • Mathematical modelling of heat exchange in flash tank heat

    Precipitator area for the Bayer process. Regarding the very energy intensive character of the Bayer process, many developments, aiming at an energy demand reduction, were suggested. Thus it was suggested to re-use the low-grade heat of calcination for spent liquor evaporation [1], or to introduce a new type Spiral Heat Exchangers

  • ALUMINA Plate Heat Exchanger/Plate Heat Exchanger Gasket

    Heat exchanger type Bayer process of alumina production: to use NaOH solution to dissolve out the bauxite and the alumina in the resulting sodium aluminate solution is separated out as aluminum hydroxide under the conditions of adding seeds or stirring continuously The heat exchange equipment used in this process

  • BAYER PROCESS CONTROL AT ALCAN VAUDREUIL WORKS

    Jan 01, 2007· Bauxite Charge Control 3.2 Vacuum Heat Exchange Optimization This process is one of the two major heat recovery systems in the Vaudreuil plant Bayer process. The purpose of the vacuum heat

  • Production Red Mud Project

    Jul 13, 2005· The Bayer process, as it has become known, is used for refining bauxite to smelting grade alumina (aluminum oxide), the precursor to aluminium. Typically, depending upon the quality of the ore, between 1.9 and 3.6 tonnes of bauxite is required to produce 1 tonne of alumina. The Bayer process is a cyclic one and is often called Bayer

  • Compabloc Condenser Solved Fouling Problem

    of alumina annually using the Bayer pro-cess, the thermal process based on he solubility of alumina in caustic liquor. and process engineers began looking for a new solution in order to solve the extreme fouling and corrosion. Looking For a New Solution As for many process industries using heat exchangers

  • ALUMINA Plate Heat Exchanger/Plate Heat Exchanger Gasket

    Heat exchanger type Bayer process of alumina production: to use NaOH solution to dissolve out the bauxite and the alumina in the resulting sodium aluminate solution is separated out as aluminum hydroxide under the conditions of adding seeds or stirring continuously The heat exchange equipment used in this process are as following:

  • Another Efficient Solution: Helping alumina refineries go

    Feb 12, 2020· A fundamental challenge with this process is that scale forms on heating surfaces as Bayer liquor is heated such as on heat exchanger tubes. As a result, heat transfer efficiency diminishes, reducing throughput, or increasing energy consumption and, therefore, CO2 emissions.

  • Scale Inhibitors Solvay

    The development of MAX HT® sodalite scale inhibitor, a revolutionary product that eliminates sodalite scale from heat exchangers throughout the Bayer Process, is a testament to our commitment to provide technologically advanced chemistry that brings real value and contributes to the sustainability of the alumina industry.

  • How To Make A Heat Exchanger Cheap YouTube

    How To Make A Heat Exchanger Using Plastic And Copper. A quick introduction video of building the heat exchanger that costs less than the all copper heat exc.

  • BAYER PROCESS CONTROL AT ALCAN VAUDREUIL WORKS

    Jan 01, 2007· Bauxite Charge Control 3.2 Vacuum Heat Exchange Optimization This process is one of the two major heat recovery systems in the Vaudreuil plant Bayer process. The purpose of the vacuum heat exchange network is to recover energy from a hot stream (pregnant liquor) by transferring it to a cold stream (spent liquor).

  • Mining and Refining Process World Aluminium

    The spent liquor is heated through a series of heat exchangers and subsequently cooled in a series of flash tanks. The condensate formed in the heaters is re-used in the process, for instance as boiler feed water or for washing bauxite residue. The remaining caustic soda is washed and recycled back into the digestion process. 7. Classification

  • Heat exchanger Wikipedia

    A heat exchanger is a system used to transfer heat between two or more fluids.Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural

  • Process for purification of anhydrous hydrogen chloride

    The heat exchangers B and C can be any type of heat exchangers. Preferably, shell and tube exchangers are used. The refrigeration equipment E may be any commercially available equipment capable of cooling the gas stream to a temperature of from about −20 to about −40° C. Suitable refrigerants include ammonia and fluorocarbons having

  • How to design a heat exchanger SACOME

    May 06, 2019· The main process data that the client must define to design a heat exchanger are the flows, both product flow and service flow, as well as the inlet and outlet temperature.These parameters should verify the principle of conservation of energy.Other process data that may be important depending on the application are the inlet pressure, the maximum admissible pressure drop or flow rate.

  • Compabloc Condenser Solved Fouling Problem

    of alumina annually using the Bayer pro-cess, the thermal process based on he solubility of alumina in caustic liquor. and process engineers began looking for a new solution in order to solve the extreme fouling and corrosion. Looking For a New Solution As for many process industries using heat exchangers, the most important require-

  • Characterisation of single-stream Bayer plant heat

    Request PDF Characterisation of single-stream Bayer plant heat exchanger scale During the Bayer process, deleterious scale formation, consisting largely of aluminosilicate and titanate phases

  • All About Shell And Tube Heat Exchangers What You Need

    Dec 07, 2020· Modular heat exchangers can be bought that will function in most small scale situations, but large scale exchangers require extra legwork. They are built based on the process they are a part of; as a result, they must be process-designed so that their specific design parameters can be matched with TEMA-standard parts.

  • How do heat exchangers work? Explain that Stuff

    Mar 26, 2020· All heat exchangers do the same job—passing heat from one fluid to another—but they work in many different ways. The two most common kinds of heat exchanger are the shell-and-tube and plate/fin. In shell and tube heat exchangers, one fluid flows through a set of metal tubes while the second fluid passes through a sealed shell that surrounds

  • Understanding Heat Exchangers Types, Designs

    Dec 07, 2020· A close-up view of a section of a water-to-air heat exchanger. Image Credit: Alaettin YILDIRIM/Shutterstock. Heat exchangers are devices designed to transfer heat between two or more fluids—i.e., liquids, vapors, or gases—of different temperatures. Depending on the type of heat exchanger employed, the heat transferring process can be gas-to-gas, liquid-to-gas, or liquid-to

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