Milling efficiency and technology

Search Results

Now showing 1 - 7 of 7

Evaluate the suitability of the fixed element crystalliser for widespread adoption in Australian sugar factories : final report 2019/202
(Sugar Research Australia Limited, 2020) Gregg, M; Lowrey, M; Broadfoot, R; Abdi, I
The fixed-element design of a horizontal cooling crystalliser is relatively new to the Australian industry and the installation at Broadwater Mill for the 2017 season proved to be an economical solution to refurbish the mill’s first unit in a continuous-flow station of three crystallisers. The crystalliser consists of 12 fixed cooling elements and 14 rotating paddles. A variable-speed drive was installed to allow a rotational speed of the paddles up to 1.45 r/min, depending on the massecuite viscosity and imposed torque. Apart from fabrication of the fixed elements, the mill’s staff undertook the complete installation. During the 2019 season, trials were undertaken which demonstrated good overall performance with respect to heat transfer, residence time distribution and molasses exhaustion. The good performance is attributed to the paddles providing strong flow of massecuite transversely and also longitudinally to generate flow across the cooling surface. Torque control of the variable speed drive is recommended as this allows rotation of the paddles at maximum speed for the prevailing viscosity of the massecuite, while limiting the stresses on the drive components.
Evaluation of the Neltec Colour Q for measuring the purity of magma from C centrifugals : final report 2018/201
(Sugar Research Australia Limited, 2019) Pike, D; Broadfoot, R; King, S; Woods, P
In Australian factories one operator typically manages the high grade fugalling, sugar drying and low grade (C) fugalling stations. The C fugals are managed least effectively as there is no process instrumentation to monitor on line C sugar purity or final molasses purity. Conditions can change rapidly in the C fugals without the operator being aware and poor performance can persist for several hours. Tight control of the C sugar purity is important to avoid high sucrose losses to final molasses or an excessive recycle of impurities in the C sugar (magma or remelt) to the pan stage.
Develop a blueprint for the introduction of new processing technologies for Australian factories: final report 2015/043
(Sugar Research Australia Limited, 2018) Broadfoot, R; Rackemann, DW; Moller, DJ
Several overseas factories are using technologies that reduce their process steam consumptions to very low levels, e.g. lower than 32% on cane, which are much lower than achieved by the most steam efficient Australian factories (~40% on cane). The steam efficient technologies that are not currently being used in Australian factories include:- Falling film tube evaporators and Kestner evaporators; In-line juice heaters on vapour from the final evaporator; Barriquand juice heaters; Use of vapour from the 3rd evaporator for pan boiling; Direct contact pan feed conditioning systems; and Vapour recovery systems such as in condensate cigars.
Developing a new methodology for competency based training courses for shift supervisors in sugar factories : revised final report QUT032
(Sugar Research Australia Limited, 2014) Broadfoot, R
The provision of effective training of supervisors and operators is essential if sugar factories are to operate profitably and in an environmentally sustainable and safe manner. The benefits of having supervisor and operator staff with a high level of operational skills are reduced stoppages, increased recovery, improved sugar quality, reduced damage to equipment, and reduced OH&S and environmental impacts.
Advanced computer simulation of sugar factories - SysCAD : revised final report 2010/040
(Sugar Research Australia Limited, 2014) Broadfoot, R; McFeaters, J; Stephenson, R
This project aims to develop a highly adaptable 'whole of sugar factory' process model that includes the capability to incorporate a variety of adjunct processing options e.g. cogeneration, biofuel production from molasses, juice or fibre, biochemical production.
Determine the optimum tube dimensions for Robert evaporators through experimental investigations and CFD modelling: final report 2012/054
(Sugar Research Australia Limited, 2017) Broadfoot, R
Experimental investigations were undertaken in a single tube pilot evaporator for nine tubes of three different lengths and three different diameters to determine the optimum tube dimensions for Robert evaporators. Heat transfer performance was determined at operating conditions typically encountered in sugar factory evaporators. Juice of three brix levels were selected to mimic conditions for the 1st, 3rd and 5th effects in a quintuple evaporator set. For each brix, the heat transfer coefficient (HTC) was calculated at four juice levels, two headspace pressures and two pressure differences between the steam chest and the headspace. Of the four juice levels, one juice level was identified as the optimum juice level corresponding to the maximum HTC. In total, 432 tests were undertaken with nine tubes and a further 128 tests were replicated with four tubes. The maximum HTC and optimum juice level results, linked together with a capital cost analysis and sucrose loss considerations, determined the preferred tube dimensions for Robert evaporators in a quintuple evaporator set.
Implement supervisory/advisory control of pan and fugal stations : final report 2010/038
(Sugar Research Australia Limited, 2015) Broadfoot, R; Dodd, R

Milling efficiency and technology

Browse

Filters

Advanced Search

Filter by

Settings

Sort By

Results per page

Search Results