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Coal Fired Boiler
Fluidized Bed Combustion (FBC) technology has seen rapid expansion in the last 10 years and now represents a significant sector of the market for coal fired boilers. Reasons for this success include low acid gas emissions and greatly enhanced fuel flexibility. Principles of Fluidized Beds are when solid particles can be moved by a fast stream of air or other gas, for example when pressurized air or other gas is admitted below a column of solid particles the particles are lifted and separated by the passage of the gas until, as the rate of gas flow is increased, they behave as a liquid with vigorous movement and mixing. Compare to conventional boiler design, FBC boiler allows fuel to stay longer in the combustion chamber thus providing sufficient time to have enough contact with air. Also, due to the in-bed turbulence and the scouring action of the bed materials on the heat transfer surface, the fireside heat transfer coefficient can be about 3 times than that of boilers using conventional firing system. Its combustion efficiency is such that it can burn virtually every last scrap of energy in the fuel. The very low content of unburned carbon in the disposed ash further attests to its high combustion efficiency as high as 99%. The temperature in the FBC area is kept below the ash melting point at 850 - 950 oC. This low combustion temperature prevents fusion of ash and the formation of clinkers in the furnace thereby minimizing the bad effects of fouling and erosion of heat surface. This is especially important for fuels with very high ash content like low-grade coal and low ash fusion point.
Top and 2nd largest papermill in Taiwan are using Hamada FBC Coal Boiler
TAIPEI: Taiwan has almost 36 Boiler Manufacturing comapnies locally. But no one until now manufactures fluidized bed boiler. Due to the Taiwan government strict control on environment which set the limit of NOx as low asJapan level,chain grate boiler can not meet the requirement any more. This is the main reason that the top and 2nd largest papermill of Taiwan selected Hamada FBC Boiler. FBC boiler can easily pass the government rule on NOx because of low combustion temperature. Cheng Loong PaperMill (Zhupei Factory and Tayuan Factory) and Yong Fong Yi (YFY-Yangmei Factory, YFY-Chingsui factory, and Union paper-Douryu factory) are using Hamada Boilers .

400kw RICE HUSK POWER PLANT
Actual unit operating in Indonesia since 2007 in Wonosobo, Central Jawa. Bernadi Rahaju (Director Utama) of PT Dieng Jaya/ PT National Champignon said this is a wonderful set up to produce small scale electricity without using steam boiler. And their company are going to place an repeat order of 800 KW within this year. Some people worries about tar from the combustion of rice husk/wood. But we have completely soved this tar problem by adding tar treatment system together with the existing environmental equipment.

venturi scrubbers and cooling towers. Water is employed as the cooling and scrubbing media. Waste heat recovery is also available for domestic and industrial heating purposes. The cooled and cleaned gas is pumped through a Hi-volt electrostatic participator (optional) to remove the remaining tar and particulate before being used in the gas engines.
Gas Engines and Generators
The combustible gas is directly used in reciprocating gas engines to power generators to produce electrical energy. The system is much compact and simple. In addition, it can also be used for other heating or direct combustion applications. One may ask that the biomass or producer gas can be burned in boilers to produce steam for piston engines or turbines, however these operate at a relatively low efficiency and require large steam plant and huge initial investment. The gas engines are professionally retrofitted diesel engines which are simple in operation reliable. Relevant technical personnel are readily a vailable, even in rural regions of developing countries.
Internal Travelling Chain Stroker Fire Tube Boiler of 10 ton Capacity
Biomass Gasification Most of us believe that wood (a kind of biomass) burns. However, if looking closely at the fireplace, the pyrolysing wood does not burn at the wood surface. The wood evolves a combustible gas, which burns whenever it encounters oxygen in the air. In simple term, Biomass Gasification is the breaking down of biomass material in the absence of oxygen to produce volatile vapor as a kind of combustible gas. The volatile vapor, usually known as Producer Gas, contains H2, CH4, CO as the sources of energy and typically CO2 and N2 as the unwanted diluents. The biomass is fed into the Gasifier and fluidized to heat up to about 800 oC to generate Producer Gas which needs to be cleaned and cooled down prior to being used in gas engines. Producer Gas Treatment The Producer Gas from the gasifier is very hot at about 750 oC. It passes through a cyclone separator to remove the coarse particulates and then passes through a series of
Fuel feeding equipment
Hamada Boiler also offer various kind of solid fuel feeding system. Also available pelletizing machine/ crushing machine to pre-process various kind of fuels for the best shape to feed into the boiler. 2 Picture from the left shows shaftless screw conveyor which is used for plastic waste boiler and citiwaste feeding. Picture right is the SATRINDO shredder for shredding plastic botols, containers, used tired etc. Waste tires can be shredded by this machine and pass through the magnetic steel wire removing equipment before feeding into the boiler. Our boiler operating in Taiwan are using about 20 % used tires without emitting black smoke, but the flying particles from the tire fuel need bag filter and DeSOx tower.

For a better view of the Hamada Boiler Energy News, Click here or Download Hamada Boiler Energy News 2010
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