Paper mill practice report at St. Thomas Paper Corporation (STPC), Sto. Tomas, Batangas, Philippines. Special Topic: Heat efficiency based on steam consumption of the dryer section of Paper Machine (PM) of St. Thomas Paper Corporation (STPC)

Date

12-2014

Degree

Bachelor of Science in Chemical Engineering

Major Course

Major in Pulp and Paper Technology

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Ramon A. Razal

Abstract

The practicum was conducted at St. Thomas Paper Corporation (STPC)located at Brgy. Sa. Felix, Sto. Tomas, Batangas. STPC produces corrugating medium of different grades, 115, 125 and 159gsm. Heat efficiency based on steam consumption of the dryer section the data collected, it was observed that heat loss in the piping system, poor removal of condensate in the dryer cylinders, and proper ventilation were the factors that affected heat efficiency of the dryer section. Based on 190 tons of paper produced per day, the ideal steam consumption of the paper machine would be 0.35 tons of steam per ton of paper produced. The actual steam consumption of the dryer section on the five consecutive days of data gathering were 1.10, 1.12, 1.09, 1.08, and 1.08 tons of steam per ton of paper produced. Using the ratio of the ideal and actual steam consumption, the heat efficiency based on steam consumption of the dryer section during five consecutive days od observation were 31.26%, 35.73%, 32.06%, 36.60%, and 35.36%, respectively. The assessment was based on the efficient dryer section standards from TAPPI. Inefficiency of the dryer section was verified by determining steam loss per day which were 81, 192lb, 54,088lb, 72,196lb,36,467lb, and 51,333lb for the five consecutive days of data gathering. The amount of paper produced had a direct relationship with the steam consumption of the dryer section.. The temperature profile of the dryer cylinders were also obtained and showed that the dryer cylinders were poorly evacuated with condensate. It was in the front face of the dryer cylinder where the highest temperatures that ranged from 70°C to 120°C were observed.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993 2014 E62 /T67

Document Type

Thesis

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