Paper Recycling Technology Dr. Richard A. Venditti ppt

Paper Recycling Technology Dr. Richard A. Venditti Dept. of Wood and Paper Science North Carolina State University Dr. Richard Venditti z Faculty member in the Wood and Paper Science Dept at NCSU z PhD in Chemical Engineering, BS in Pulp and Paper Science and Chemical Engineering z Research areas:  Paper recycling  Utilization of forest/agricultural materials for new applications z Classes Taught:  Process Control  Unit Operations for Pulp and Paper  Paper Recycling (Distance) z Director of Hands On Workshop for Pulp and Paper Basics, co-sponsored through TAPPI, on-campus and in-mill z Technical services projects for over 20 companies Dr. Richard Venditti: Research Projects in Paper Recycling z The detection of adhesive contaminants, tracking through mills z The changes in fibers upon recycling z Automatic sorting of recovered papers z Flotation deinking surfactants z Agglomeration deinking z Screening phenomena and pressure sensitive adhesives z Deposition of adhesive contaminants z Alternate recycling processes  Ultrasonic deinking  Supercritical carbon dioxide to extract wax from OCC Course Outline z The Paper Recycling US Industry z Contaminants z Effect of Recycling on Fibers/Paper z Unit Operations  Pulping, Cleaning, Screening, Washing, Flotation, Dispersion, Bleaching, z Image Analysis, Deinking Chemicals z System Design Course Activities z Viewing of the Videos of Lectures  Base lectures by Venditti  Guest lectures from industry leaders z Reading assignments from Recycled Fiber and Deinking, Book 7 of the Series: Papermaking Science and Technology z Reading assignments: selected research papers z Homeworks: 6 assignments z Final Project: Literature Review and Research Proposal Course Objectives z Broad understanding of paper recycling science and technology z Develop an expertise in a selected research topic in paper recycling Critical Issues in Recycling: z Going deeper into the wastepaper stream => poor quality material z Meeting paper specifications, which are getting more stringent z Increased demands for paper from emerging countries z Environmentally benign operations at the same time both of the above are being satisfied Recovered fiber, not “Wastepaper” Recovered Fiber, not “Wastepaper” z Learning objectives  Understand the trends of paper recycling in the industry  Identify the major grades of recovered fiber  Identify the major types of contaminants in recovered fiber Global Paper and Board Demand Overall Positive Growth Slide by: Richard B. Phillips, PhD Adjunct Professor WPS NCSU Source: RISI [...]... finished paper Before use by a consumer as a final end product Post-consumer waste: Paper that has passed through the end usage as a consumer product Internal broke: off-specification paper that is repulped and used at the same site, not considered secondary fiber Recycled Fiber Definitions Recovery Rate (RR) how much paper is diverted from landfill Tons of Wastepaper Collected RR = 100% Tons of Paper. .. Recovered Paper Annual Statistics Pkging Material Recovered, 2006 Paper Glass Metal Plastic Other Total 22.9 2.8 2.2 1.3 1.3 30.5 (000,000 tons) Source: AF&PA, 2006 Recovered Paper Annual Statistics Source: AF&PA, 2006 Recovered Paper Annual Statistics Exports and Imports of Recovered Paper 18 Exports Imports 16 Millions of Tons 14 12 10 8 6 4 2 0 1990 1992 1994 1996 1998 2000 2002 2004 Year Recovered Paper. .. Statistical Highlights, 2005 Edition, AF&PA 2006 Major Recovered Paper Grades Mixed Papers: mixed papers, low quality office waste, magazines, catalogs, telephone directories, recycled boxboard cuttings, tissue paper converting scraps if mainly composed of recycled fiber, mill wrappers, specialty grades, all other grades not specified Newspapers: old newspapers, special news, groundwood computer printout, coated... (000 tons) Source: AF&PA, 2006 Recovered Paper Annual Statistics Newsprint Tissue P&W Other Export Total 380 2,680 1,200 1,000 7,300 15,690 (000 tons) Source: AF&PA, 2006 Recovered Paper Annual Statistics Recovered Paper Prices, $/ton US Paper Spot Market Prices May 24, 2007 Corrugated Container Old Newsprint Boxboard Old Magazines Mixed Paper Sorted Office Paper White Ledger White Envelope 105 85... 98,016 49,255 50.30% 2004 101,882 50,287 49.40% 2005 99,618 51,272 51.50% 2006 100,198 53,488 53.40% Source: AF&PA, 2006 Recovered Paper Annual Statistics Utilization of Recovered Paper in the US Source: AF&PA, 2006 Recovered Paper Annual Statistics Paper Recovered (000 tons) Paper Landfilled (000 tons) 1993 35,460 38,399 1994 39,691 38,118 1995 42,189 36,118 1996 43,076 34,331 1997 43,989 37,174 1998... De-ink Quality #7 Consists of sorted, fresh newspapers, not sunburned, containing not more than the normal amount of rotogravure and colored sections Prohibitive Materials Total Outhrows may not exceed None Permitted ¼ of 1% Scrap Specifications Circular, Guidelines for … .Paper Stock… By: Institute of Scrap Recycling Industries, Inc Recovery of Paper and Paperboard (000 tons) Export/ Grade-Year At mills... China Eastern Europe Slide by: Richard B Phillips, PhD Adjunct Professor WPS NCSU Source: RISI Paper & Paperboard Consumption vs GDP Increases with Wealth … Levels Off Slide by: Richard B Phillips, PhD Adjunct Professor WPS NCSU Source: 2007 FAO Forest Resource Assessment Asian Supply has Grown to Match Demand Little Incentive for others to develop export strategy Slide by: Richard B Phillips, PhD Adjunct... DI-1993 3.7 100 HG DI-2006 3.6 100 Source: AF&PA, 2006 Recovered Paper Annual Statistics 16.4 million t/yr 7.0 million Source: AF&PA, 2006 Recovered Paper Annual Statistics 4.2 million 3.5 million 1.6 million Ctn Bd NP Packg Ind Cvt Paper Bd Tissue Export Other Total 15,153 0 398 3,946 167 5,218 303 25,185 (000 tons) Source: AF&PA, 2006 Recovered Paper Annual Statistics Ctn Bd RecPBd Tissue News P&W Other... Recovered Paper Grades Corrugated: old corrugated containers, container cuttings, kraft paper and bags, old solid fiber containers, kraft bag clippings, carrier stock and its clippings Pulp Substitutes and high grade deinking: bleached chemical pulped office papers and CPO suitable for deinking, or as a pulp substitute if unprinted, bleached sulfite and sulfate cuttings including tissue paper converting... Specifications Circular, Guidelines for … .Paper Stock… By: Institute of Scrap Recycling Industries, Inc Definitions Outthrow: “all papers that are so manufactured or treated or are in such a form as to be unsuitable for consumption as the grade specified” Prohibitive Material: material in excess of specified maximum make the recovered paper unusable as the grade specified Any materials that may be damaging . AF&PA, 2006 Recovered Paper Annual Statistics Source: AF&PA, 2006 Recovered Paper Annual Statistics Utilization of Recovered Paper in the US Paper. Paper Recycling Technology Dr. Richard A. Venditti Dept. of Wood and Paper Science North Carolina State University Dr. Richard Venditti z Faculty