Hawaii bagasse pellet case


Hawaii bagasse pellet case

Part or all of a primary stream of bagasse from the sugar mill is dried from its initial moisture content, e. The resulting drier material is separated to provide an oversize particle stream which may be sent directly to the boiler for burning, to storage in the bagasse house, or to a secondary drying operation, and a secondary stream of fine particle size bagasse components which are most suitable for further process and densification.

The densified material is then sent to storage, returned to the boilers for part or all of the fuel requirement or transported to other potential users. Boiler efficiencies are low with most losses occurring in stack flue gas. During recent times, as fossil fuels have become scarcer and more costly, efforts have been made to increase the efficiency of bagasse conversion into both kinetic and potential energy forms.

Generally these efforts have been in the area of drying the bagasse through various methods thereby increasing its combustion efficiency or increasing the efficiency of the boilers by using higher steam pressures, better use of insulation, optimization of combustion techniques, etc.

Utilities must accept electrical energy from non-fossil sources when that energy is provided continuously year round and at a specified minimum rate. Electrical generation in sugar factories in the past have provided only short term variable electrical power to the utility company, which reduced the desirability of this energy to the utility.

The drying and compacting of cellulosic wastes to improve their utility for fuel and other purposes is known in the art. Patents in this field include British Pat. Of these patents, the British Pat.

These patents indicate that there are serious problems in handling this material. The patent to Geveke discloses the baling of wet bagasse from the crusher mills, permitting the bales to dry and then cutting the bagasse into small pieces and briquetting it.

The amount of moisture is not specified. The patent to Bishop deals with sugar cane and relates to the making of an animal feed rather than a fuel pellet. In the proposed process sugar cane is burned in the field by controlled burning to burn off dead, dry leaves and simultaneously decrease the moisture content of the remaining stalks.

These early patents relating to bagasse and sugar stalks indicate that there is a special problem involved in briquetting this type of material and that special procedures are necessary, including steam digestion as in the British Pat. The patent to Johnston U. There are no specific examples of treating bagasse.

The patent to Bonnafoux U.

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The exact amount of moisture is not specified. The Briggs et al U. A product having a specific gravity within the range of 0. It has been found that these conditions are not satisfactory for pelleting bagasse.

The Gunnerman patented process is known in the trade as the "Woodex" process.

Bagasse – Wikipedia

A proposal for converting the "Woodex" process to process bagasse has been published in Sugar y Azucar, August issue and for purposes of background information the disclosure of this publication is incorporated herein.

Sugar factories operate on an intermittent basis i. They also may cease processing for shorter periods of time during the normal operating period either for small scale repairs or for other operational economies such as scheduling, etc. During the periods of factory processing bagasse flows continually, while during the shorter period of non-operation, bagasse has been fed from a bagasse storage house to the boiler thereby maintaining steam pressure for auxiliary operations.

This bagasse storage house is periodically refilled during the operational periods. This relatively short term storage technique has been effective in keeping auxiliary machines and lighting for the factory in operation during brief non-productive times.

Storing bagasse to perform the same functions for longer periods of time has a high fire risk due to its exothermic reaction resulting from fermentation.

Hawaii bagasse pellet case

It also has not been economical due to the bulkiness of the material approximately lb. This invention shows how the bagasse can be utilized in an effective energy conversion system in synergism with the sugar factory to provide an overall efficiency greater than that obtainable by using methods heretofore known.

When so treated, bagasse has a net effective heat content approximately times per unit volume greater than the bagasse from the mill.The effectiveness of bagasse as a source of energy is increased by a flexible operation adapted to the power requirements, fuel storage requirements and other variables of a sugar mill operation.

Part or all of a primary stream of bagasse from the sugar mill is dried from its initial moisture content, e.g. in the order of 50%, to a lower moisture content, . Bagasse and Blended Biomass Cogeneration Advances in the Cogeneration in the Cuban Sugar Industry.

Bagasse and Blended Biomass Cogeneration Advances in the Cuban Sugarcane Industry Northeast in reducing its dependence on heating oil for home heating.
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Industrial Coal fired Steam / Hot Water / Thermal Oil Boiler This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources.
See Data Sugar is one of the oldest traded commodities in the world. The commodity has had a large influence in economies and politics worldwide from the 15th century onwards.
control bagasse feed in boiler | Industrial Coal Boiler manufacturer These properties make bagasse particularly problematic for paper manufacture and have been the subject of a large body of literature. Fuel[ edit ] Bagasse is often used as a primary fuel source for sugar mills.

Bagasse cogeneration (which is the term most countries use for combined heat and power) was initiated in Mauritius and Hawaii.

Bagasse (/ b ə ˈ ɡ æ s / bə-GAS) is the fibrous matter that remains after sugarcane or sorghum stalks are crushed to extract their juice.

It is dry pulpy residue left after the extraction of juice from sugar cane. [1]. TISSUE PAPER: An innovative manufacturing process uses sugar cane fiber instead of wood pulp.

Sugar cane "bagasse" are fibers that remain after the stalks are squished for their juice. Bagasse can be utilized for toilet paper, tissue, towels. Its use also prevents additional environmental harm caused by the release of greenhouse gases during traditional bagasse burning.

Hawaii bagasse pellet case

#greenmanufacturing. Lessons Learned from Existing Biomass Power Plants. Lessons Learned from Existing Biomass Power Plants G. Wiltsee Appel Consultants, Inc. Valencia, California burns bagasse for about 6 months of the year, and burns urban and other wood wastes at other times.

Fuels. Download Citation on ResearchGate | Process to increase the effectiveness of bagasse as a source of energy | The effectiveness of bagasse as a source of energy is increased by a flexible operation.

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