Alvan-Blanch - Biomass Dryer
From Multi-Purpose Dryers
The main reason for drying biomass is to increase the combustion efficiency by de-watering the biomass products. The solid biomass system has drawn more attention to utilising waste heat from biomass boilers and CHP engines as a biomass drying process. Further encouraged by various government renewable heat schemes (such as RHI) solid biomass (including solid biomass contained in waste) system has drawn more attention to utilising waste heat from biomass boiler as well as biomass drying process. Alvan Blanch customers already witnessed some satisfactory drying result from conveyor dryer applications on woodchip, digestate, grass, straw, animal manure, and many other types. We have listed below two typical drying processes for your information.
Product Details
Digestate
Digestate is known as a nutrient-rich fibrous substance produced by anaerobic digestion, and there is an increasing demand on dried digestate for animal bedding, fertiliser, and other on-farm use. Especially for on-Farm AD projects, post-AD process - dewatering and drying digestate becomes inevitable, considering the saving on transport cost and reuse of heat from engine and CHP units.
The biomass dryer will efficiently dry digestate from a maximum moisture content of 75% down to below 10% if required. If higher input moisture is required this can be achieved through the addition of our back-mixing system.
Woodchip
Woodchip drying is a vital part of a biomass fuel production which adds to bio solid fuel quality: continuous drying process utilises heat from biomass boiler, which is charged by fuels such as woodchip, wood shaving and wood logs. Biomass Energy Centre’s study indicates that the wetter the intake fuel is, the less responsively the boiler operates, and therefore drying process becomes essential in improving efficiency on woodchip usage. In addition, we supply a series of auxiliary equipment such as pelleting press, briquetting press, chopper and Hammermill to cater to woodchip and other biomass markets.
Grain Drying
Continuous conveyor biomass dryer is specialised for handling crops as well as other industrial materials. An optional grain hopper can be fitted in the feed section on all CD range dryers to facilitate granular product intake, such as grain, wheat, barley, rice, etc. As CD driers adopts the same unique louvered bed principle as to other range of grain dryers, drying bed blockage can be prevented, while a higher drying consistency can be achieved under a prompt and precise air flow control.
For applications and installations where different types of driers are required, Alvan Blanch manufactures a range of alternative dryers such as DF and SPD ranges, as well as a full range of rotary driers, both batch and continuous. More information about other drier ranges are available here.
Versatile Drying Control Systems
Alvan blanch offers both relay logic control and PLC (programmable logic controller) systems for the range of dryers. We aim to improve our user friendliness and offer a control system that has remote control built into it, so that drier settings can be adjusted by iPad, iPhone, Android and similar. In particular, with our upgraded PLC system, the dryer operator is able to view a different screen as to the drier supervisor, while the supervisor’s screen reflects latest remote operation happened on the machine. In addition, fault-finding diagrams are built into HMI and machine manual so as to facilitate the operations. With regard to the data storage, PLC internally stores key values with date and times stamped, which can be used for future operational analysis and comparison.
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