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Build Any Mill in Python: A Modular Simulation Platform for Pulp & Paper

Python-based mass, energy, and water balance for any pulp & paper mill configuration

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About

About

About the Book

Every pulp & paper feasibility study starts the same way: a blank

spreadsheet, hardcoded mass balances, and weeks of debugging.

Modular Mill is a Python platform that changes this. Assemble any

mill configuration from LEGO-like process modules — OCC, Kraft,

Board Machine, Tissue Machine — connect them, call mill.run(),

and get automatic mass, energy, and water balance instantly.

What's inside:

- 8 production-grade modules validated against industry design data

- Physics-based dryer models (TAPPI DR curves, Yankee evaporation)

- Recovery boiler, turbine, and power strategy simulation

- Operating cost layer with sensitivity analysis

- Interactive Streamlit dashboard

- 2,414 automated tests — all passing

No NumPy, no SciPy. Standard library only in the calculation engine.

This is a living book. All future updates — new modules, deeper

physics models, additional mill examples — are delivered free to

all buyers automatically via Leanpub.

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Contents

Table of Contents

  • Getting Started
    • Unsure How to Get Started? Try our Book Workshop!
    • How to Write on Leanpub
    • Previewing and publishing
    • Basic formatting
    • Markdown and Markua
    • Generate a preview version of your book
    • Either read a tutorial, or just go for it!
    • Thanks for being a Leanpub author!
  • Writing in Markua
    • Section One
    • Including a Chapter in the Sample Book
    • Links
    • Images
    • Lists
    • Page Breaks
    • Code Samples
    • Tables
    • Math
    • Headings
    • Block quotes, Asides and Blurbs
    • Good luck, have fun!

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