Model Potash Plant Design

Only available on StudyMode
  • Topic: Fluid dynamics, Volumetric flow rate, Mass flow rate
  • Pages : 80 (19635 words )
  • Download(s) : 287
  • Published : May 25, 2013
Open Document
Text Preview
PRODUCTION OF POTASSIUM CARBONATE FROM COCOA HUSK ASH
A Process Engineering Project Report
Presented to the
Department of Chemical Engineering
Faculty of Chemical and Materials Engineering
College of Engineering
Kwame Nkrumah University of Science and Technology, Kumasi
By
AMANING OSEI EMMANUEL
ATTIPOE EDEM KODZO
BOAKYE KWAME
JUWAH CHUKWUJINDU AWELE
OMENOGOR ANWULI ROSEMARY
in Partial Fulfillment of the Requirements
for the course
Process Engineering Project
April 2013.

TABLE OF CONTENTS
1CHAPTER ONE - INTRODUCTION9
1.1MAIN OBJECTIVE9
1.2SPECIFIC OBJECTIVES9
2CHAPTER TWO -LITERATURE REVIEW10
2.1PRODUCTION OF POTASSIUM CARBONATE10
2.1.1PRODUCTION FROM POTASSIUM CHLORIDE10
2.1.2PRODUCTION FROM WOOD ASH (COCOA POD ASH)10
2.2STORAGE AND HANDLING11
2.3DANGERS11
2.4CAUTIONS11
2.5USES OF POTASSIUM CARBONATE11
2.5.1INDUSTRIAL USES11
2.5.2USES IN FOOD PROCESSING12
2.6CHEMISTRY OF POTASSIUM CARBONATE13
2.6.1PHYSICALPROPERTIES13
2.6.2CHEMICAL PROPERTIES13
3CHAPTER THREE – PROCESS SELECTION AND DESCRIPTION14
3.1INTRODUCTION14
3.2LEACHER14
3.3CLARIFIER15
3.4EVAPORATOR15
3.5CRYSTALLIZER16
CALCINER16
4CHAPTER FOUR – MATERIALAND ENERGY BALANCES17
4.1MATERIAL BALANCE17
4.2ENERGY BALANCES23
5CHAPTER FIVE - EQUIPMENT SPECIFICATION AND PIPING28
5.1PIPELINE SPECIFICATIONS28
6CHAPTER SIX - DESIGN OF A LEACHING VESSEL32
6.1PROBLEM STATEMENT32
6.2INTRODUCTION32
6.3DESCRIPTION OF EQUIPMENT33
6.4JUSTIFICATION34
6.5CHEMICAL ENGINEERING DESIGN35
6.5.1VISCOSITY AND DENSITY OF THE MIXTURE35
6.5.2DETERMINATION OF LEACHER DIMENSIONS36
6.5.3POWER AND SPEED OF IMPELLER REQUIRED40
6.6MECHANICAL ENGINEERING DESIGN44
6.6.1MATERIAL OF CONSTRUCTION44
6.6.2SHAFT DESIGN45
6.6.3DESIGN PRESSURE47
6.6.4DETERMINATION OF VESSEL THICKNESS48
6.6.5DEADWEIGHTAND CONTENT WEIGHT49
6.6.6DESIGN OF SUPPORT51
6.6.7STRESS ANALYSIS OF VESSEL53
6.6.8FLANGE DESIGN AND SELECTION54
6.6.9GASKET DESIGN AND SELECTION54
7CHAPTER SEVEN - DESIGN OF A CLARIFIER57
7.1PROBLEM STATEMENT57
7.2INTRODUCTION57
7.3TYPES OF CLARIFIER58
7.3.1PARALLEL PLATE CLARIFIER58
7.3.2CIRCULAR CLARIFIER59
7.4JUSTIFICATION60
7.5PROCESS DESCRIPTION61
7.6EQUIPMENT DESCRIPTION62
7.6.1TANK62
7.6.2OVERFLOW LAUNDER62
7.6.3FEED WELL62
7.7SLUDGE REMOVAL MECHANISMS63
7.7.1RAKING ARM DESIGN64
7.8DRIVE ASSEMBLIES65
7.9INLET PIPE AND PORTS66
7.10CLARIFIER DESIGN67
7.10.1CHEMICAL ENGINEERING DESIGN SPECIFICATION68
7.10.2MECHANICAL DESIGN SPECIFICATIONS72
8CHAPTER EIGHT - DESIGN OF AN EVAPORATOR85
8.1PROBLEM STATEMENT85
8.2INTRODUCTION85
8.3TYPES OF EVAPORATORS85
8.3.1BATCH85
8.3.2HORIZONTAL TUBE86
8.3.3VERTICAL SHORT TUBE86
8.3.4LONG-TUBE VERTICAL EVAPORATORS86
8.3.5RISING/FALLING FILM86
8.3.6FALLING FILM87
8.3.7FORCED CIRCULATION87
8.3.8PLATE TYPE87
8.3.9AGITATED THIN FILM88
8.4JUSTIFICATION88
8.5EQUIPMENT DESCRIPTION AND MODE OF OPERATION89
8.6DESIGN PARAMETERS90
8.7CHEMICAL ENGINEERING DESIGN CALCULATIONS91
8.7.1EVAPORATORBODY91
8.7.2HEAT EXCHANGER DESIGN (PRE-HEATER)95
8.8MECHANICAL ENGINEERING DESIGN100
8.8.1CALCULATION OF SHELL THICKNESS100
8.8.2TORI-SPHERICAL HEADDESIGN101
8.8.3STRESS ANALYSIS101
9CHAPTER NINE- DESIGN OF AN OSLO CRYSTALLIZER103
9.1PROBLEM STATEMENT103
9.2INTRODUCTION103
9.3TYPES OF CRYSTALLIZERS104
9.3.1TANK CRYSTALLIZERS104
9.3.2SCRAPED-SURFACE CRYSTALLIZERS104
9.3.3CIRCULATING MAGMA CRYSTALLIZERS105
9.3.4CIRCULATING LIQUOR CRYSTALLIZERS105
9.4EQUIPMENT SELECTION106
9.5OPERATION OF THE OSLO-KRYSTAL CRYSTALLIZER107
9.6CHEMICAL ENGINEERING DESIGN109
9.6.1DESIGN PARAMETERS EVALUATED111...
tracking img