Showing posts with label pulp. Show all posts
Showing posts with label pulp. Show all posts

A Quick and Easy Presentation on Measuring Freeness in Pulp & Paper Production

Drainac Freeness Analyzer
Drainac Freeness Analyzer
Production Superintendents, Machine Superintendents, Process Engineers, Machine Operators .... if you have basic paper machine production responsibility, you should look at this slideshow.

A Freeness Analyzer is an on-line, in-process field instrument used as a production orientated tool that directly measures drainage rate (freeness).

It operates on the basic principle of how easily water will drain through a pad of fiber. Approximately every 30 seconds, the Freeness Analyzer measures the rate of filtrate flow through a fiber pad.

Once the freeness has been determined, air pressure is increased to return the filtrate and fiber to the stock line in preparation for the next cycle. At the same time, flush water is introduced into the chamber to clean the screen and interior of the chamber.

This information is regarded as a “window” into the process as an indirect measurement of fiber quality. The TECO Drainac is the only freeness measurement device that actually measures the true drainage rate, or from the papermaker’s standpoint, actually measures the drainage of the stock on the forming fabric.