Syllabus - Pulp & paper Technology (CM-503 (B))

Chemical Engineering

Pulp & paper Technology (CM-503 (B))

V-Semester

Unit- I

Introduction

Present status of pulp and paper industries; Fibrous raw materials; Fiber chemistry. Raw Material Preparation: Debarking, chipping, chip screening, storage. Pulping: Chemical, semi chemical, mechanical, chemi-mechanical and non-conventional. Secondary fiber pulping. Advances and recent trends in pulping.

Unit- II

Bleaching

Objectives of bleaching bleach ability measurement, bioleaching. Chemical Recovery: Composition and properties of black liquor, oxidation and desalination, concentration of black liquor & its incineration caustic zing and clarification, sludge washing and burning.

Unit- III

Pulp Manufacture

Stock preparation, beating and refining, functional and control additives for papermaking, wet-end chemistry, polymer chemistry, retention sizing.

Unit- IV

Paper Manufacture

Approach flow system, wire part, sheet forming process, sheet transfer mechanism, press part, theory of pressing, dryer part, paper drying process, calendaring, cylinder mould machine, finishing, fiber recovery systems, recent developments in paper making. Coating and lamination.

Unit- V

Paper Properties

Physical (optical, strength and resistance), chemical and electrical properties, paper defects. Paper Grades: Types, composition, manufacturing techniques, properties and uses.

Course Objective

This course introduces the manufacture of paper from fibrous raw materials to the processing of finished products with emphasis on papers produced from wood, non-wood and secondary fibres. It will focus on the entire pulp and paper manufacturing process address the environmental issues that arise from the different processes involved.

Practicals

Reference Books

  • Britt, K. W. (Ed.), “Handbook of Pulp and Paper Technology,” 2nd ed., CBS Publishers & Distributors, Delhi, 1984.

  • Casey, J. P., “Pulp and Paper Chemistry and Chemical Technology,” Vol. 1, 3rd ed., Wiley Interscience.

  • Rydholm, S. A., “Pulping Processes,” Wiley Inter science.