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Understanding Chemicals

From first principles

Understanding Chemicals

Fourteen modules take you from what the chemical industry makes and how a process works, through plant economics and the value chain from oil and gas to plastics, fibres and detergents, to dyes, coatings, agrochemicals, pharmaceuticals, the business of specialty and fine chemicals, biorefineries and bioplastics. Each process comes with a flowchart, the raw materials and utilities it needs, and why it pays or does not. Everything is drawn from fifteen books and reports, cited with page references in every section.

Modules

  1. The chemical industry: what it makes and how it is organised: The chemical industry turns a short list of raw materials into a few building blocks and then into tens of thousands of products sold mainly to other industries. This module sizes the industry with the latest Cefic data, explains how commodity, pseudo-commodity, fine and specialty businesses differ in economics, and traces how cheap gas, restructuring and Asian growth moved its centre of gravity. It ends with a map of the rest of the course.
  2. How a chemical process works: reactions, separations, catalysts and flowsheets: A chemical plant is a reactor surrounded by feed preparation, separation, recycle, purification and a second plant of utilities. This module explains from first principles the reaction ideas that set raw material use and plant size, what catalysts can and cannot do, what each separation step costs in energy, and why scale decides between batch and continuous. It works through the sulphuric acid contact process with a full material and energy balance, and treats safety as a design input using Flixborough and Bhopal.
  3. The economics of a chemical plant: costs, prices and profit: How a chemical plant makes or loses money, built from Brennan's Process Industry Economics. It covers what sets process industries apart, how markets and prices are forecast, how capital and operating costs are estimated, and how cash flow, NPV and IRR decide whether a plant is worth building, with worked examples from aluminium smelting to sulphuric acid.
  4. Heavy inorganics: salt, sulphur, nitrogen and phosphorus: The heavy inorganic chemicals (sulphuric acid, chlorine and caustic soda, soda ash, ammonia and its derivatives, phosphoric acid and the industrial gases) are made in huge tonnages by mature processes. This module follows each process step by step, with raw materials and energy per tonne, and shows why sulphur supply, power prices, gas prices, transport and by-products decide which plants are cheap. India's position runs through it.
  5. From crude oil and natural gas to the C1-C4 building blocks: Almost all organic chemicals trace back to a handful of building blocks made from oil, gas or coal: ethylene, propylene, the C4s, benzene, toluene, xylenes, methanol and ammonia. This module explains how refineries, steam crackers, reformers and syngas plants make them. It also shows why feedstock choice changes both the product mix and the cost, region by region.
  6. From building blocks to plastics, fibres and detergents: Ethylene, propylene, butadiene and the aromatics feed a small number of large derivative trees that end in plastics, synthetic fibres, rubber and detergents. This module follows those trees, explains how polymers are built and why catalysts and reactors matter, and shows why the economics turn on monomer cost, yield, plant scale and integration.
  7. Scale, capacity and feedstock: which chemical plants get built: Why commodity chemicals are made in ever larger plants, what limits plant size, and how capacity planning, utilisation and the industry cycle decide whether a big plant pays. It then shows how technology, feedstock prices, integration, risk, safety rules and sustainability metrics together decide which plants are profitable to build, and where.
  8. Colour and protection: dyes, pigments, paints and coatings: How molecules become coloured, how dye intermediates and azo dyes are made from benzene, toluene and naphthalene, and which dye classes suit which fibres. It then covers titanium dioxide, carbon black and organic pigments, and how paints and inks are formulated and made, with the economics and Indian industry data throughout.
  9. Soaps, detergents and agrochemicals: Washing products and crop protection chemicals look unrelated, but both are formulation businesses built on a few high-volume actives. This module follows fats and oils from the refinery through soap making, fat splitting and glycerine recovery, then explains why synthetic detergents displaced soap and how a laundry powder is formulated and made. The second half covers pesticides: the main classes and their targets, how a new active is discovered and registered, how one is made and formulated, and how patents and generics shape the industry.
  10. Pharmaceuticals and fermentation: from molecule to medicine: How a drug is made: multistep batch synthesis of the active ingredient, purification to exacting standards, formulation into tablets and injections, and the fermentations that make antibiotics, ethanol, citric acid and amino acids. It closes with enzymes, protein drugs and the economics that put most of a medicine's cost outside the factory.
  11. How a classic specialty chemical market works: the synthetic dye industry: Synthetic dyes were the first science-based industry and remain the textbook specialty chemical: thousands of products, small volumes of each, sold on performance and backed by application service. Using Murmann's history of the industry from 1857 to 1914, with Kent on dye chemistry and Pollak on today's specialty business, this module explains how the market was structured, how firms competed, why German firms overtook the British pioneers, and what that teaches about any specialty market.
  12. The fine and specialty chemicals business: how it really works: Fine chemicals are the complex single molecules, mostly drug and pesticide actives and their intermediates, made in multipurpose batch plants for a few powerful customers. This module explains how they differ from commodities and specialties, how a multipurpose plant works and what it costs, how custom manufacturing and generic API deals are made and priced, and why utilisation, Asia and patents decide who profits.
  13. Biorefineries and platform chemicals: How plant matter becomes chemicals: what biomass is made of, how biorefineries fractionate it, and the enzymatic, fermentation, catalytic and thermal routes that convert it. It then covers the DOE's twelve platform chemicals, what had actually reached market by 2012, and why feedstock cost, yield, logistics and integration decide the economics.
  14. Bioplastics: PLA, PHA, bio-PE and starch blends: 'Bioplastic' covers two different ideas: plastics made from plant carbon, and plastics that microbes can digest. This module follows PLA, PHA, bio-based polyethylene and starch blends from crop to pellet to end of life, compares their properties, costs and climate footprints with PE, PP, PET and PS, and sets them against the 2025 market to show where each one earns its place.