Energy From Waste
There is an alternative to landfills and incineration- a proprietary process that produces no pollution and no hazardous byproducts . Municipal Solid Waste, tires, plastics, biomass, wood waste, medical waste, waste oil, waste water sludge, coal and more can be used to generate power and energy. Trash or any other carbon-based waste can be turned into a natural gas substitute that can be used to make electricity, or to generate heat, or for cooling.
The system uses patented technology and a process called slow thermolysis to liberate the energy contained in waste materials.
The synthetic gas produced by the patented system is primarily a mixture of methane (CH4), carbon monoxide (CO) and hydrogen (H2). It will have an energy value between 600 and 1000 BTU/ft3, depending on the feedstock.
Major gas turbine manufacturers like Siemens AG and Caterpillar Division MWM have approved the direct injection of this clean synthetic fuel gas into their engines and turbines with full warranty. Gas engines and turbines are far more efficient for generating electricity than heating a boiler for a steam turbine, which is how incinerators typically generate electricity.
Besides making clean fuel gas, the process produces carbon-rich char, as well as a small amount of ash.
Depending on the feedstock, the char can have value as a replacement for coal or coke, for making steel or cement and other industrial processes that require high heat. Char can be used to fuel a boiler for a combined heat and power (CHP) system producing more electricity. The fraction of ash that is produced can be safely landfilled.
High-Chlorinated Plastics (HCP), Mercury Laden Products, electronics waste and other materials that cannot be incinerated or landfilled without harm can be used as feedstock, with absolutely no damage to the environment.
Contaminants like mercury, chlorine and sulfur evaporate during the gasification process in the closed-loop system and are scrubbed out with additives to the gas stream.The gas stream additives chemically react with the contaminants and transform them into neutralized salts.
The system is unique because it can process any carbon-based waste and remain compliant with all environmental regulations.
The stack emissions from the system meet the strict standards of California and Germany. No dioxins or furans are emitted, for example, because they are never created. The system provides an environmentally responsible way to dispose of many different types of waste that may not be safe to dispose of in other ways.
The emissions from engines or turbines running this gas also meet tough standards, as they are nearly identical to emissions from running natural gas.
Gases created in the process are recycled through the system repeatedly until all the energy has been salvaged. Unlike incineration, which typically captures about 25 % of available energy, this process captures between 65% to 85 %. Temperature, crackers, gravity, and chemical catalysts break down any other components.
The closed loop, oxygen-free environment inside the system prevents the emission of harmful chemicals and does not contribute to acid rain.
The amount of power generated by these systems varies according to the feedstock and the size of the system. For example, a plant (with generator) processing 44 Tons Per Day of Municipal Solid Waste (trash) can generate approximately 3 megawatts of electrical power, while a plant processing 88 tons makes about 6 megawatts. That is for trash. Tires or plastics can generate much more.
The amount of plastics, paper, rubber and other high BTU- potential fuel contained in MSW will have an effect on the energy potential of that trash. This varies considerably from culture to culture, town to town.
For instance, we found that 1 ton of trash from the city of Yola, Nigeria can produce 1 megawatt hour of power. For a video of the feasibility study we conducted for Adamawa State, Nigeria, see http://vzaar.com/videos/1396610
Systems are available in 22, 44, 88 and 176 Tons Per Day sizes.
For more information, contact Lex Henkels or Mark Snyder by clicking here.