Abstract— The aim of this project is to develop, and evaluate a concept for a new pulp feeding system to one pulping processing machineries. This new system shall enable feeding with a higher pulp consistency, and will wash the dirty pulp compared to existing pulp feed systems. A pre-study is conducted to get acquainted with the washing, and understand the problem. This study can be resulted in a number of goals and demands. After the pre-study concepts generated, and evaluated, one was selected to continue working with washing process. The selected concept will further evaluated through personnel visit to the chemical/mechanical pulping industries. And the potential will be find out from the result. In the pulp washing machine and method therefore, pulp to be washed is fed between the rotating drum and the pressing roll inside it, so that pulp passes along a spiral-formed track around the pressing roll, being thereby pressed several times. Washing liquid is fed to the pulp at one or several points along its track of movement, between the pressings and/or at the pressing position. Washing thus takes place partly as diffusion and partly as a displacement washing process. Washing is efficient and reduces the breaking of pulp fibers down to a minimum.

Index Terms— Pulp washing, Twin roller press, Water recycle

Cite: Vikram A Dandekar, Vivek V Patil, and Smitesh R Bobade, " Design, Fabrication and Analysis of Prototype Twin Roll Press Pulp Washing," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 2, pp. 415-421, April 2014.