Process Engineering Publications

Technical guides covering autoclave design, scale-up criteria, WFI systems design, and process safety barriers.

All TopicsProcess EngineeringProcess SafetyCapexAutomationSimulations
Chemical Compatibility & Reactivity Matrices in Process Manufacturing: CCPS Chemical Reactivity Worksheet (CRW) & Functional Group Hazardous Interactions
Process Engineering
⏱12 min read

Chemical Compatibility & Reactivity Matrices in Process Manufacturing: CCPS Chemical Reactivity Worksheet (CRW) & Functional Group Hazardous Interactions

A comprehensive chemical engineering guide to building chemical compatibility charts and assessing reactive chemical hazards. Details the CCPS & NOAA Chemical Reactivity Worksheet (CRW) methodology, functional group incompatibility mechanisms, binary compatibility matrices, equipment MOC selection, and downloadable Excel calculator.

Chemical CompatibilityCCPS CRWReactivity MatrixFunctional GroupsProcess SafetyOSHA PSM
Kiran Seepana 24 0
Master Class: The 20 Essential Chemical Reactions in Pharmaceutical Manufacturing: Mechanisms, Real-World Drug Syntheses & Process Safety
Process Engineering
⏱9 min read

Master Class: The 20 Essential Chemical Reactions in Pharmaceutical Manufacturing: Mechanisms, Real-World Drug Syntheses & Process Safety

Master class engineering guide to 20 essential chemical reactions in the pharmaceutical industry. Details reaction mechanisms, real-world API synthesis routes (Aspirin, Paracetamol, Sartans, Peptides), kinetics, process safety hazards, and infographic reference.

Process EngineeringAPI SynthesisChemical ReactionsProcess SafetyScale-Up
Kiran Seepana 25 0
Industrial Dust Collector System Design in Chemical & API Manufacturing: Baghouse Sizing, Air-to-Cloth Ratio, Duct Hydraulics & NFPA 68 Safety
Process Engineering
⏱8 min read

Industrial Dust Collector System Design in Chemical & API Manufacturing: Baghouse Sizing, Air-to-Cloth Ratio, Duct Hydraulics & NFPA 68 Safety

Comprehensive engineering guide to industrial dust collection systems in API and chemical manufacturing: pulse-jet baghouse sizing, air-to-cloth ratio, duct transport hydraulics, NFPA 68 explosion venting, and filter media selection.

Process EngineeringProcess SafetyDust CollectionBaghouse SizingNFPA 68API Containment
Kiran Seepana 24 0
Pharma P&ID Review Checklist: 50 Things Most Engineers Miss
Process Engineering
⏱5 min read

Pharma P&ID Review Checklist: 50 Things Most Engineers Miss

Run a systematic 50-point P&ID design review checklist derived from real HAZOP action items. Downloadable PDF checklist included.

Process EngineeringP&ID ReviewHAZOPProcess SafetyDesign Checklist
Kiran Seepana 0 0
Single & Multi-Stage Steam Jet Ejector Systems: Hydraulics, Motive Steam Dynamics, Hybrid Water Ejector Loops & Vacuum Troubleshooting
Process Engineering
⏱11 min read

Single & Multi-Stage Steam Jet Ejector Systems: Hydraulics, Motive Steam Dynamics, Hybrid Water Ejector Loops & Vacuum Troubleshooting

An authoritative OEM chemical engineering masterclass on single, multi-stage, and hybrid steam-water ejector systems. Covers supersonic nozzle dynamics (Mach > 1), closed water recirculation loop hydraulics, PHE cooling, HEI suction capacity sizing, 11.35m barometric leg height, and a 7-step field vacuum troubleshooting guide.

Process EngineeringVacuum SystemsEjectorsUtilitiesProcess SafetyTroubleshooting
Kiran Seepana 0 0
API Scale-Up: The 10 Physics-Based Mistakes That Derail Every Project
Process Engineering
⏱9 min read

API Scale-Up: The 10 Physics-Based Mistakes That Derail Every Project

Master API and chemical scale-up from 1 L lab to 10,000 L commercial plant. Learn the 10 physics-based transport phenomena pitfalls (heat transfer A/V collapse, Damköhler micromixing, Zwietering Njs) with a detailed industrial failure & remediation case study.

Process EngineeringPharmaScale-UpChemical EngineeringReaction Engineering
Kiran Seepana 0 0
Energy Pinch Analysis: Finding Hidden Savings in a Pharma Plant (How AI Transforms Batch Pinch)
Process Engineering
⏱10 min read

Energy Pinch Analysis: Finding Hidden Savings in a Pharma Plant (How AI Transforms Batch Pinch)

Comprehensive guide to Energy Pinch Analysis in pharmaceutical manufacturing. Learn how AI, Machine Learning, Graph Neural Networks, and Thermal Energy Storage (TES) overcome batch non-contemporaneity and cGMP constraints to slash steam and chilled water costs by 30-45%.

Energy EfficiencyPinch AnalysisArtificial IntelligenceProcess EngineeringPharmaHeat Exchanger NetworkHENProcess IntegrationSustainability
Kiran Seepana 0 0
Flow Reactor Hardware, Metallurgy & Utility Sizing Guide: Microreactors, PFRs, CSTR Cascades & Photochemical Cells
Process Engineering
⏱7 min read

Flow Reactor Hardware, Metallurgy & Utility Sizing Guide: Microreactors, PFRs, CSTR Cascades & Photochemical Cells

An authoritative chemical engineering guide on flow reactor hardware types, materials of construction (SiC, Hastelloy, PFA), ASME B31.3 fabrication standards, and thermal TCU utility sizing equations.

Flow ChemistryReactor HardwareSilicon CarbideHastelloy C-22PFR DesignCSTR CascadePhotochemical FlowMetallurgyTCU SizingHeat Transfer CoefficientASME B31.3
Kiran Seepana 0 0
Continuous PAT & Real-Time Release Testing (RTRT) in Flow Skids: Sensor Fusion, Chemometrics & ICH Q13 Compliance
Process Engineering
⏱9 min read

Continuous PAT & Real-Time Release Testing (RTRT) in Flow Skids: Sensor Fusion, Chemometrics & ICH Q13 Compliance

An authoritative chemical engineering guide on Process Analytical Technology (PAT) and Real-Time Release Testing (RTRT) in continuous flow skids. Explores ATR-FTIR optics, 60 MHz qNMR, rapid UPLC, PLS chemometric modeling, and ICH Q13 compliance.

Continuous PATReal-Time Release TestingRTRTICH Q13ATR-FTIR Flow OpticsChemometrics PLSProcess AutomationFlow Chemistry Skids
Kiran Seepana 0 0
5 Industrial Case Studies in Flow Chemistry: Transforming Hazardous Exothermic & Cryogenic API Processes
Process Engineering
⏱9 min read

5 Industrial Case Studies in Flow Chemistry: Transforming Hazardous Exothermic & Cryogenic API Processes

An in-depth chemical engineering case study compilation detailing 5 commercial API scale-up breakthroughs achieved via continuous flow chemistry. Explores nitration, organolithium reagents, high-pressure hydrogenation, diazonium Sandmeyer reactions, and ozonolysis.

Flow Chemistry Case StudiesAPI Scale-UpProcess IntensificationNitration SafetyOrganolithium ChemistryHydrogenationPhotochemistryHazardous Reactions
Kiran Seepana 0 0
Industrial Flow Reactor Troubleshooting & Failure Mitigation: Channel Clogging, Pump Pulsation & BPR Seizure
Process Safety
⏱10 min read

Industrial Flow Reactor Troubleshooting & Failure Mitigation: Channel Clogging, Pump Pulsation & BPR Seizure

An authoritative industrial troubleshooting guide on continuous flow reactor failure modes. Explores microchannel clogging physics, Hagen-Poiseuille pressure drop diagnostics, pulse dampener tuning, back-pressure regulator (BPR) seating failures, and automated unclogging protocols.

Flow Reactor TroubleshootingChannel CloggingHagen-Poiseuille MathBack-Pressure RegulatorPump PulsationProcess SafetyProcess IntensificationFlow Chemistry Skids
Kiran Seepana 0 0
Flow Chemistry Fundamentals & Batch-to-Flow Transition in Pharma: A 6-Phase Engineering Roadmap
Process Engineering
⏱9 min read

Flow Chemistry Fundamentals & Batch-to-Flow Transition in Pharma: A 6-Phase Engineering Roadmap

An authoritative chemical engineering guide on continuous flow chemistry in pharma. Covers transport phenomena, kinetic derivations, batch vs flow decision matrices, RTD profiling, PAT integration, and a step-by-step 6-phase engineering roadmap.

Flow ChemistryContinuous ManufacturingBatch-to-Flow TransitionProcess EngineeringAPI Scale-UpProcess SafetyGreen ChemistryPAT IntegrationReaction KineticsResidence Time Distribution
Kiran Seepana 0 0
AI/ML Self-Optimizing Flow Chemistry Platforms: Autonomous Reaction Screening, Bayesian Optimization & Closed-Loop Control
Process Engineering
⏱11 min read

AI/ML Self-Optimizing Flow Chemistry Platforms: Autonomous Reaction Screening, Bayesian Optimization & Closed-Loop Control

An authoritative chemical engineering masterclass on self-optimizing continuous flow reaction platforms. Explores BoTorch Bayesian optimization, multi-objective Pareto optimization, high-throughput inline analytical integration (ATR-FTIR, UPLC, MS), closed-loop PID-ML execution, and autonomous route discovery.

Flow ChemistryAI/ML OptimizationBayesian OptimizationClosed-Loop ControlAutonomous ChemistryPAT IntegrationBoTorchProcess Automation
Kiran Seepana 0 0
Photochemical & Electrochemical Flow Reactor Engineering: Radiative Transport, Photon Flux, Zero-Gap MEA Cells & Scale-Up Hydraulics
Process Engineering
⏱9 min read

Photochemical & Electrochemical Flow Reactor Engineering: Radiative Transport, Photon Flux, Zero-Gap MEA Cells & Scale-Up Hydraulics

An authoritative chemical engineering guide on photochemical and electrochemical flow reactor design. Covers Beer-Lambert radiative transport, photon flux optimization, zero-gap MEA cells, Butler-Volmer kinetics, Faradaic efficiency, and commercial scale-up hydraulics.

Photochemical FlowElectrochemical FlowZero-Gap MEA CellButler-Volmer KineticsRadiative TransportPhoton FluxFaradaic EfficiencyProcess Intensification
Kiran Seepana 0 0
Flow Pumping Mechanics, Slurry Handling, Pulse Dampener Math & BPR Hydrodynamics in Continuous Skids
Process Engineering
⏱8 min read

Flow Pumping Mechanics, Slurry Handling, Pulse Dampener Math & BPR Hydrodynamics in Continuous Skids

An authoritative fluid dynamics and mechanical engineering guide on pumping mechanics, slurry transport, pulse dampener sizing math, and back-pressure regulator (BPR) hydrodynamics in continuous flow chemistry skids.

Flow Pumping MechanicsSlurry HandlingPulse Dampener SizingBack-Pressure RegulatorNPSH CalculationEquilibar BPRFluid DynamicsProcess Intensification
Kiran Seepana 0 0
Multiphase Transport Phenomena in Flow Chemistry: Gas-Liquid-Solid Dynamics, Mass Transfer Coefficients & Governing Equations
Process Safety
⏱8 min read

Multiphase Transport Phenomena in Flow Chemistry: Gas-Liquid-Solid Dynamics, Mass Transfer Coefficients & Governing Equations

An authoritative chemical engineering guide on gas-liquid-solid interactions in continuous flow. Covers Taylor slug flow, kLa mass transfer optimization, Weisz-Prater slurry kinetics, and transport phenomenon LaTeX math.

Flow ChemistryMultiphase FlowGas-Liquid FlowTaylor Slug FlowMass Transfer CoefficientSolid Slurry HandlingWeisz-Prater CriterionBodenstein NumberTransport PhenomenaProcess Safety
Kiran Seepana 0 0
End-to-End Continuous Manufacturing (E2E-CM) in API Plants: Integrated Flow Synthesis, Crystallization, Filtration & Drying
Process Engineering
⏱10 min read

End-to-End Continuous Manufacturing (E2E-CM) in API Plants: Integrated Flow Synthesis, Crystallization, Filtration & Drying

An authoritative technical engineering guide on End-to-End Continuous Manufacturing (E2E-CM) for Active Pharmaceutical Ingredients. Covers flow synthesis skids, membrane workup, MSMPR crystallization, rotary filtration, vacuum paddle drying, ICH Q13 compliance, and dynamic material diversion.

End-to-End ContinuousAPI ManufacturingFlow ChemistryMSMPR CrystallizationContinuous FiltrationICH Q13Process IntensificationPAT IntegrationQuality by Design
Kiran Seepana 0 0
Single Fluid System (Monofluid TCU) Sizing & Engineering Design Guide: Hydraulics, DIN 4754 Expansion Tank, 3-PHE Skid Selection & PLC Control Logic
Process Engineering
⏱9 min read

Single Fluid System (Monofluid TCU) Sizing & Engineering Design Guide: Hydraulics, DIN 4754 Expansion Tank, 3-PHE Skid Selection & PLC Control Logic

A comprehensive chemical engineering guide on Monofluid TCU sizing and PLC temperature control logic. Covers thermal capacitance, pump hydraulics, DIN 4754 expansion tanks, 3-PHE skid selection, cascade PID, split-range control, and Structured Text (ST) PLC code.

Single Fluid SystemTCU SizingMonofluidProcess EngineeringPLC Control LogicCascade PIDSplit Range ControlDIN 4754Structured TextThermal Shock
Kiran Seepana 0 0
Salt Selection & Cocrystal Screening: The Chemical Engineering Guide to Overcoming API Insoluble Traps (pKa Rule & Phase Diagrams)
Process Engineering
⏱9 min read

Salt Selection & Cocrystal Screening: The Chemical Engineering Guide to Overcoming API Insoluble Traps (pKa Rule & Phase Diagrams)

An authoritative guide on salt selection, counterion screening, and cocrystal design for poorly soluble BCS Class II/IV APIs. Covers the ΔpKa rule, ternary phase solubility diagrams, common-ion effect, disproportionation risks, and commercial crystallization scale-up.

Salt SelectionCocrystalsAPI SolubilitySolid State ChemistryPhase DiagramsBCS Class IICrystallization Scale-UpPre-formulation
Kiran Seepana 0 0
Statistical Process Capability (Cpk, Ppk) & PPQ Batch Sizing for Chemical Engineers (FDA Stage 2 Validation)
Automation
⏱10 min read

Statistical Process Capability (Cpk, Ppk) & PPQ Batch Sizing for Chemical Engineers (FDA Stage 2 Validation)

An authoritative engineering guide on statistical process validation under FDA Stage 2 Process Performance Qualification (PPQ). Covers Cpk vs Ppk mathematical derivations, within-batch vs overall variance, tolerance interval batch number sizing (95/95 rule), and Box-Cox data transformations.

Process ValidationPPQ SizingCpk and PpkFDA Stage 2Statistical Quality ControlProcess CapabilityScale-UpQuality by Design
Kiran Seepana 0 0
Agitated Liquid-Liquid Extraction Columns: Sizing Karr, Scheibel, and Kühni Columns for Continuous API Workup
Process Engineering
⏱10 min read

Agitated Liquid-Liquid Extraction Columns: Sizing Karr, Scheibel, and Kühni Columns for Continuous API Workup

A chemical engineering guide on sizing and operating agitated liquid-liquid extraction (LLE) columns in pharmaceutical API plants. Covers Karr reciprocating, Scheibel, and Kühni agitated columns, Sauter mean droplet diameter (d32), flooding velocity, and Kremser NTU/HTU calculations.

Liquid-Liquid ExtractionExtraction ColumnsKarr ColumnScheibel ColumnKühni ColumnContinuous WorkupProcess IntensificationSeparation Engineering
Kiran Seepana 0 0
Jet Milling vs. Wet Bead Milling: The Physics of API Micronization (D90 < 5 μm) for Inhalation & Poorly Soluble Drugs
Process Engineering
⏱11 min read

Jet Milling vs. Wet Bead Milling: The Physics of API Micronization (D90 < 5 μm) for Inhalation & Poorly Soluble Drugs

A chemical engineering guide comparing spiral jet milling, opposed fluidized bed jet milling, and wet bead nanomilling for Active Pharmaceutical Ingredients. Covers fracture mechanics, sonic nozzle aerodynamics, amorphous surface generation, stress energy calculations, and particle agglomeration troubleshooting.

MicronizationJet MillingWet Bead MillingParticle Size DistributionInhalation APIsBCS Class IIParticle EngineeringSolid State
Kiran Seepana 0 0
Cryogenic Reactor Scale-Up (-80°C to -100°C): From Organolithium Batch Vessels to Room-Temperature Flow Synthesis
Process Engineering
⏱11 min read

Cryogenic Reactor Scale-Up (-80°C to -100°C): From Organolithium Batch Vessels to Room-Temperature Flow Synthesis

An authoritative chemical engineering guide to cryogenic reactor scale-up for organolithium, LDA, and Grignard chemistries. Covers low-temperature metallurgy, DBTT, liquid nitrogen (LN2) cooling vs. closed-loop chillers, jacket heat transfer, and the breakthrough transition to room-temperature microchannel flow synthesis.

Cryogenic ReactionsOrganolithium ChemistryFlow ChemistryReactor Scale-UpLow-Temperature MetallurgyLiquid NitrogenProcess SafetyProcess Intensification
Kiran Seepana 0 0
The Blueprint for Workplace Safety: A Comprehensive Guide to Industrial Hygiene
Process Safety
⏱8 min read

The Blueprint for Workplace Safety: A Comprehensive Guide to Industrial Hygiene

Comprehensive engineering guide to industrial hygiene, anticipation, recognition, evaluation, and control of chemical, physical, and ergonomic stressors, monitoring regimes, employee health surveillance, and containment engineering.

Process SafetyIndustrial HygieneOccupational HealthEHSPharma
Kiran Seepana 0 0

Disclaimer

The technical articles, chemical engineering equations, and recommendations published in these blogs are for informational and educational purposes only. They are based on general engineering practices and principles, which may not apply to specific design contexts or plant conditions. Users are responsible for verifying all design criteria and safety margins with certified professional engineers prior to implementation.