Consistency of pulp
WebConsistency control is one of the most important and yet common controls in the wet end of a paper machine. Nevertheless, it is at the same time one of the most poorly implemented loops on many paper machines. In this presentation, the several different process objectives with appropriate control strategies will be considered. WebFeb 25, 2013 · Pulp Consistency Determination 1) Mix the pulp sample thoroughly either in slurry form or shredded pulp cake (see figures 1 and 2). If it is a slurry... 2) Pre-dry …
Consistency of pulp
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WebProblem 4 (25) In paper mills, the consistency of pulp suspensions is controlled by changing the dilution water flow. In one such example, the following transfer function was determined. -0.0407 Gp (s) (3.48s +1) The time scale was in seconds. a) Define this transfer function in terms of the output and input signals. WebHow consistency control works. •Consistency of the stock in the pipe is d. int. measure. •Measured result is compared to a set point in a controller. •The output from the …
WebMay 7, 2024 · The best tamarind varieties to buy, the best recipes to use them in, and more questions you have about this delicious sweet-sour fruit—answered. Webthe consistency and the type of pulp tested Pulp suspension can only flow once this shear stress is exceeded in the suspension Once the suspension starts to flow, the flow can be in the form of flocs slipping past flocs, or individual fibres slipping past one another The shear stress required to get pulp suspension to flow is generally higher
WebConsistency is one of the most important pulp & paper variables. It affects pulp mill washing & screening efficiency, and bleaching reactions. In the paper mill it affects … WebNov 1, 2024 · Refining of high-consistency pulp on a set w ith a curved shape o f knives at a consistency of 10% revealed the best result of physical and mechanical …
Webpulp obtained from the original wood weight. A recovery value of 45% means that for every 100 oven-dry pounds of wood processed, 45 oven-dry pounds of pulp is produced. When expressed in this manner, pulp yield is mainly a function of the pulp-ing process. There is some difference between hard-woods and softwoods when pulped by chemical
http://grayhall.co.uk/BeloitResearch/tappi/t240.pdf is divergent based on a bookWebOur new method of measuring the consistency of a. pulp suspension, in a liquid medium comprises squeezing the liquid gradually out of a measured quantity'of the pulp suspension under a definite constant squeezing'pressure until a final constant volume is reached, measuring the said volume, and comparing this measured volume with calibration data … rya burnham on crouchWebThe principal objectives of pulp refining are to: Increase the flexibility of the cell wall to promote increased contact area Fibrillate the external surface of the fiber and generate fines This further promotes the formation of hydrogen bonds and increases the total surface area available for bonding. rya boat showWeb8 rows · Consistency: is the term used to describe solid content of pulp during pulp processing. For ... World-wide Supplier of Used Paper, Pulp and Converting Machinery, Buy & Sell … The amount of cellulose fiber in wood determines the pulp yield, ease of … World leading exporters of pulp, paper and sawn timber . Various Type Paper … This page contains sites of paper, newsprint, tissue, paperboard and/or … High Consistency HD High Density HDPE High Density PolyEthylene HE Heat … This page contains articles on forestry, papermaking, pulping, recycling etc. If … This page contains the manufacturer's sites of general chemical such as Sodium … Your Ultimate Pulp Manufacturers Resource on the Web. EUROPE; Altri, Portugal … The extractives reduce pulp yield, increase pulping and bleaching chemical … rya check clean dryWebJul 18, 2005 · One source is TAPPI, the Technical Association of the Pulp and Paper Industry. (tappi.org) I know I have seen books with head loss vs. consistancy in the (distant) past and I believe that at least some of them were published by TAPPI. ... Worthington etc etc, are capable,under ideal suction conditions of pumping stock upto and including 6% ... rya affiliatedWebOct 1, 1993 · Introduction The measurement of the consistency of paper stock is a special concern peculiar to the pulp and paper industry. More properly referred to as the concentration of pulp-water mixtures, consis- tency is measured in the laboratory by using a gravimetric method described in T 240 om-88 [1]. rya boat lightsWebpulp Consistency = Dry weight of sample Total weight of sample 100% • Accurate consistency control vital to uniform quality and production • Consistency affects the … is divergent thinking linked to creativity