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  1. 6 likes
    Hi everyone. I'm Ahmed from Iraq Kirkuk I'm a senior of technical engineering of fuel and energy (chemical engineering field) I like to meet new people from all over the world and thanks
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    Hi ... Myself Devesh Tiwari currently working in Aditya Birla Group as a Process Engineer and have a graduation degree in Chemical Engineering from NIT Jalandhar 2015 batch.
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    Lets make the list of software used by chemical engineers. Also suggest which software should learn during college days. please add software name and its application by replying to this post.
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    Aspen HYSYS Promax gproms chemcad prosim pdms autocad microsoft visio ( to draw pfd/pid) If you decide to purse education to Master and PhD, you'd better learn matlab, comsul, ansys and labview, but above list is a good ( not complete) one. Recently, I got familiar with below software: mysep to design separator iprsm to design safety valves prv2size to design safety valves ( free software) Iomosaic for process dafety you need both process simulators and equipment designer
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    Direct mixing and heat transfer take place in case of cooling tower while indirect mixing and heat transfer happens in heat exchangers.
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    455 downloads

    Pumps basics
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    Chemical engineering is a branch of engineering that applies physical sciences (physics and chemistry) and life sciences (microbiology and biochemistry) together with applied mathematics and economics to produce, transform, transport, and properly use chemicals, materials and energy. Essentially, chemical engineers design large-scale processes that convert chemicals, raw materials, living cells, microorganisms and energy into useful forms and products. Responsibilities of Chemical Engineers ■ Specifically, chemical engineers improve food processing techniques, and methods of producing fertilizers, to increase the quantity and quality of available food. ■ They also construct the synthetic fibers that make our clothes more comfortable and water resistant; they develop methods to mass-produce drugs, making them more affordable; and they create safer, more efficient methods of refining petroleum products, making energy and chemical sources more productive and cost effective. ■ Chemical engineers also develop solutions to environmental problems, such as pollution control and remediation. ■ And yes, they process chemicals, which are used to make or improve just about everything you see around you. Chemical engineers face many of the same challenges that other professionals face, and they meet these challenges by applying their technical knowledge, communication and teamwork skills; the most up-to-date practices available; and hard work. Benefits include financial reward, recognition within industry and society, and the gratification that comes from working with the processes of nature to meet the needs of society.
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    Pipephase from schneider (before SimSci) is used for hydraulic calculations in pipe networks. Pro-II ifrom schneider (before SimSci) is used for HMB in refinery, exploration and oil and gas facilities, among others. Aspen Hysis from AspenOne Suite is used for HMB in refinery, exploration and oil and gas facilities, among others with more accuracy depending of the case. AspenPlus from AspenOne is used specifically for petrochemical facilities, ethanol and pharma facilities. Aspen EDR from AspenOne Suite and HTRI is used for thermal design of heat transfer equipments as Shell & Tube, Plate and Frame, Spiral Heat Exchanger, Furnace, Double Tube Heat Exchanger. etc. Korf is used for pump hydraulics system. Pipenet is used for fire fighting pump hydraulics systems as well as AFT Fathom and AFT Sprinkler. Visual flow is used for hydraulic calculation in pipe networks based on isometrics. DinSim, Olga, WinSim are used for cross country pipeline as dynamic calculations. Flarenet, Implant, Flaresim are used for flare analysis including all network. Pha Pro is used for Risk Studies as Hazop, Hazid, SIL as LOPA method). Quest from Canary, PHAST from DNVGL, Breeze from Trinity Consultants, Superchems from iomosaic principally for Quantitative Risk Assessment. Caesar-II is used for pipe flexibility calculations. PVELITE and Compress are used for mechanical design of pressure vessels. TANK and E-Tank are used for mechanical design of API 650 Tanks and API 653. Visio is used for PFD and P&ID drawings as well as AutoCAD, AutoPlant, SPPID. CadWorx and SP3D used for 3D sketch drawings to generate layouts, isometrics, BOM. Others for instruments calculation.
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    Version 1.0.0

    253 downloads

    Evaporators , how they work, their working principle . all in just one presentation
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    203 downloads

    Separation Processes ppt
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    A cooling tower uses evaporative cooling for creating cooling media to be used for heat exchange. Cooling towers also have a lot of water conditioning operations viz. Blowdown, chlorination, water makeup etc A heat exchanger is of various types with a single purpose of energy exchange in terms of heat. It may have both latent and sensible or just sensible heat exchange.
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    Hello sampath For petro design use to ansys fluent software use to analysis all petro equipment body analysis of equipment & further knowledge then u go u tube search ansys fluent
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    57 downloads

    Two-Phase Gas-Liquid Systems (Saturation, Condensation, Vaporization)
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    83 downloads

    9.1 - Gas–liquid and gas-liquid-solid reactions.ppt
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    In a chemical reactor, baffles are often attached to the interior walls to promote mixing and thus increase heat transfer and possibly chemical reaction rates.
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    Why the value of LMTD for counter flow is greater than parallel flow? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  19. 2 likes
    In counter flow is thermally stable than parallel flow & less area to require to exchange the energy
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    Fauling means scaling on the inner or outer side of tube wall..due to increasing the scaling..resistance increase..If you think in common way then You can realize that heat transfer should be decrease by increasing the fauling..and in technical way ,the answers are already given in above comment
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    What is flaring in chemical plant? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
  22. 2 likes
    Over all heat transfer decreases as increase in fouling factor ( scale).Due to increased scale there will be less heat transfer and hence the performance of heat exchanger lower...
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    From the album Process Flow Diagrams

    Introduction • Ethylene oxide is produced by the oxidation of ethylene using air. • Ethanolamines are produced using the series reaction scheme of ethylene oxide with ammonia. • Ethanolamines are significantly used as absorbents to remove CO2 and H2S from process gas streams. Reactions • C2 H4 + 0.5 O2→ CH2 O.CH2O • Ethylene to air ratio: 3 – 10 % • Side reaction products: CO2 , H2O • Catalyst: Silver oxide on alumina • Operating temperature and pressure: 250 – 300°C and 120 – 300 psi • Supressing agent for side reactions: Ethylene dichloride • Reaction is exothermic • Air and ethylene are separate compressed and along with recycle stream are sent to the shell and tube reactor. • The reactor is fed on the shell side with Dowtherm fluid that serves to maintain the reaction temperature. A dowtherm fluid is a heat transfer fluid , which is a mixture of two very stable compounds, biphenyl and diphenyl oxide. The fluid is dyed clear to light yellow to aid in leak detection. • The hot dowtherm fluid from the reactor is sent to a waste heat recovery boiler to generate steam. • The vapour stream is cooled using a integrated heat exchanger using the unreacted vapour stream generated from an absorber. • The vapour stream is then sent to the heat integrated exchanger and is then sent back to the reactor and a fraction of that is purged to eliminate the accumulation of inerts such as Nitrogen and Argon. • The product vapors are compressed and sent to a water absorber which absorbs ethylene oxide from the feed vapors. Eventually, the ethylene oxide rich water stream is sent to a stripper which desorbs the ethylene oxide + water as vapour and generates the regenerated water as bottom product. The regenerated water reaches the absorber through a heat integrated exchanger. • The ethylene oxide + water vapour mixture is compressed (to about 4 - 5 atms) and then sent to a stripper to generate light ends + H2O as a top product and the bottom product is then sent to another fractionators to produce ethylene oxide as top product. The heavy ends are obtained as bottom product.
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    let's make our time valuable by exchanging different ideas about any interesting matter
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    You cannot measure entropy of any system at any point. You can only measure the change in entropy of system by determining the state of system. Only entropy known is the one given by third law of thermodynamics which says the entropy of perfectly crystalline solid at 0 K temperature is zero.
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    Please reply Name Engineering college Location (City/ Country) Engineering Batch Engineering Company/ Dream company to work for Area of Interest Project undertaken Any other info you want to share
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    The utilities of a plant includes 1. Air compressor 2. Cooling water tower 3. Steam boiler 4. Reverse osmosis unit 5. Degassifier
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    What will happen if pump is fed with a stream of liquid with dissolved gas in it? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  29. 2 likes
    Chemical Reaction Engineering ,Heat Transfer and Thermodynamics
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    liq. after leaving impeller passes through this casing passage then the velocity of flow decreases and the pressure increases .....bcz increasing area of casing...... casing provides the flow path to the liquid and it is air tight chamber
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    What is difference between filtration and sedimentation? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  32. 2 likes
    I am DCS enginner (Urea plant Chemical) working in Tata chemicals limited.
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    Various software useful to chem enggs and there applications : chemcad n aspen hyses aspen hysys is used for petrochemical and oil and gas industry, where as aspen plus and chemcad are used for speciality chemical and pharma. These are simulation softwares as u know all these and are basically used for predicting the results for ur system. Please note these are not design s/w. For example u can simulate a exchager in aspen hysys but for designing u need to use HTRI.Similarly there are softwares like korf which are used for pump hydraulics.For doing network hydraulics pipenet is used. For example cooling water network or steam network. For doing cross country pipeline olga can ve used. For sizing flare flarenet is used. For hazop studies one can use pha pro. For flare analysis wrt to burner flaresim is used. Apart from these are other software available like flowmaster this is used for surge analysis. So these are the major software used for designing in oil and gas sector.
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    The pressure which is termed in equation is static pressure (pressure head), the pressure exerting on wall of the pipe. When the pipe diameter is reduced, this pressure energy is converted into velocity head. Bernoulli eqn is nothing but law of conservation of energy. Do not confuse velocity head as pressure. Hang two ballons and blow air between them, they will come near to each other. As you blow air, velocity increases, pressure reduces between them. Surrounding atm press will force the ballon to come closer. Other eg of P2<P1, we use this phenomenon in spray pumps, ejecters.
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    Version 1.0.0

    168 downloads

    this is a part of chemical process industries and shall give you the knowledge of liquid fuels .
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    What would be the impact if we increase or decrease the size of packing in packed column? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  39. 2 likes
    Name : Pankaj Yadav Engineering college : BBD NITM Lucknow Location (City/ Country) : Lucknow / INDIA Engineering Batch : 2012-2016 Engineering Company/ Dream company to work for : NPCIL,ONGC.... Area of Interest : Process Engineering
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    Name:MUKESH KUMAR Engineering college:GANDHI ENGINEERING COLLEGE Location (City/ Country):BHUBANESWAR Engineering Batch:2014-2016 Engineering Company/ Dream company to work for:DAMODAR VALLEY CORPORATION & TATA Area of Interest:TEACHING,PERFORM RESEARCH VIA EXPERIMENTS Project undertaken:FABRICATION OF COOLING TOWER Any other info you want to share
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    270 downloads

    Energy Balance ppt
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    278 downloads

    Heat Exchangers ppt
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    About Valves
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    217 downloads

    Pressure Vessel Design ppt
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    Version 1.0.0

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    Petroleum Refining Engineering-II Course outline 1. Simplified overall crude oil refinery picture 2. Major refinery products and tests: Brief description 3. Separation process: Atmospheric and vacuum distillations, lube oil extraction, dewaxing, deasphalting, and clay treatment. 4. Catalysts used in refinery operations 5. Conversion processes: Brief description of alkylation, polymerization, isomerization of light paraffins, hydrotreating, catalytic reforming, catalytic cracking, hydrocracking, visbreaking of resids, and coking. 5. Material and energy balances for refinery processes: Simulation of refinery processes 6. Design guidelines for the selected refinery equipment
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    Version 1.0.0

    695 downloads

    Contents HEAT TRANSFER LAW APPLIED TO HEAT EXCHANGERS 2 Heat Transfer by Conduction 3 The Heat Conduction Equation 9 Heat Transfer by Convection 12 Forced Convection 12 Natural Convection 14 Heat Transfer by Radiation 15 Overall heat transfer coefficient 18 Problems 22 DESIGN STANDARDS FOR TUBULAR HEAT EXCHANGERS 23 Size numbering and naming 23 Sizing and dimension 27 Tube-side design 32 Shell-side design 33 Baffle type and spacing 33 General design consideration 35 THERMAL AND HYDRAULIC HEAT EXCHANGER DESIGN 37 Design of Single phase heat exchanger 37 Kern’s Method 45 Bell’s method 49 Pressure drop inside the shell and tube heat exchanger 57 Design of Condensers 65 Design of Reboiler and Vaporizers 72 Design of Air Coolers9 85 MECHANICAL DESIGN FOR HEAT EXCHANGERS10 88 Design Loadings 88 Tube-Sheet Design as Per TEMA Standards 90 Design of Cylindrical shell, end closures and forced head 91 References 95
  47. 1 like
    In counter flow the difference in temperature between hot fluid & cold is almost const. and so that heat transfer takes place longer but in case of parallel flow the difference in temperature continuously decreases so that transfer of heat decreases continuously.
  48. 1 like
    Raja mani

    hii dudes

    hii dudes
  49. 1 like
    What does catalytic converter of an automobile really do? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
  50. 1 like
    Manufacturing methods to control polymorphism Air Monitoring Equipments Atom Transfer Radical Polymerization High Preformance Polymers Emulsification using microfiltration membranes Bio-oxidation - A Technology For Sustainable Air Pollution Control Microbial Enhanced Oil Recovery (MEOR) Recycling of Paper Radioactive Waste Management Ion spectroscopy Airborne Particle Monitoring Natural and Fabricated Nan Biomaterials Solar Ponds Application Of Linearization Methods Particle Surface Modification Metal-Matrix Composite Processing Metamorphic Robots Particle Sizing by Laser Diffraction Remote Airborne Particle Counter Advances In Mass Spectrometry ChemometricsWind Power in France Biological Applications Of Macromolecules FluorimetryFuture for Next Generation of Nuclear Power Plants Radiation Processing of Polymers Inventory and Flow Control in Complex Process Networks Photon spectroscopy Polymer Processing Thermophotovoltaics Natural and Fabricated NanoBiomaterials Biomass for Carbon Sequestration Non-proliferation and Growth of Nuclear Fuels