Combining high-efficiency with low energy
In Bangladesh, e.g., 90% coming from all harvested rice is parboiled, plus conventional furnaces. (This populous country harvests over $ 30 million tonnes of rice every year from its rich alluvial soil inside the Gangetic delta.) Even though Bangladeshis love their rice, it certainly leaves an undesirable taste in the mouths of environmentalists and rice mill owners. There is no doubt that rice husk fired boiler for Bangladesh takes a good influence about the local economic development.
Using the rice husk supply being constant, the saved staple might be diverted to make briquettes that easily replaced conventional, polluting fuels used by steam generation within the furnaces of other industries at the same time. Epidermis advantages that resulted following the shift for the new furnace, saving rice bran from being used as fuel was really important.
Emissions of carbon monoxide gas in flue gases dropped to 3300 PPM, within the permissible limits of 5000 PPM. The steam output rate on the furnace increased from one to two tonnes hourly at 2 kg/cm2 pressure. This can be biomass boiler.
Food for thought
Bangladesh is probably the largest producers of rice on this planet–it processes about 28 million tonnes 12 months. Since most it was sent to furnaces for parboiling purposes, the exercise became a losing game for rice mill owners, farmers, and in many cases the green lobby in environmentalists waged a war contrary to the pollution why these furnaces triggered.
The traditional rice parboiling furnaces in Bangladesh are acknowledged to operate at a remarkably low efficiency of 20%. Moreover, they even use large packages of rice bran as fuel for the furnace that can be easily used by other more meaningful purposes like fodder for animals. Worse, these furnaces take half a dozen times longer than an energy-efficient someone to parboil a restricted amount of rice. Pollution levels during these traditional furnaces are...