MSW to Electricity

 

The DuTemp Plasma Conversion System exploits the unique capabilities of plasma generating systems by integrating them with associated technologies to realize the latent value in the municipal solid waste stream.  Plasma Generating Systems have, at their core, the capacity to dissociate compounds into elemental atoms.  Once the atoms are free to move independently, simple chemistry is applied to reassemble the atoms into usable, commercially viable products.

DuTemp brings a number of proprietary technologies involving thermal plasma that through their unique application provide the most efficient method of generating synthesis gas.  The important difference between the DuTemp Plasma Conversion System and other plasma designs is our ability to deliver municipal solid waste into the reaction chamber not only without air, but also in a continuous, controlled supply at controlled density and in large volumes (2000, 3000 or 4000 tons per day).  This ability results in a superior synthesis gas product with higher BTU energy value and also makes the process economically feasible. Solid municipal waste disposal requires the ability to process not pounds but tons per hours.

The organic content of average municipal solid waste will dissociate or thermally depolymerise into 30,000 to 33,000 cubic feet of synthesis gas per ton, having an energy value of 300 BTUs per standard cubic foot of gas.  The heat rate for DuTemp combined cycle power generating system is expected to be about 7.277 or lower, generating 1,360 Kw per ton of municipal solid waste that is processed.  The processing of 1000 tons of municipal solid waste per day or 41 tons per hour will release 1,353,000 cubic feet of synthesis gas per hour with a total BTU value of 405,900,000 BTU/hr.  At a heat rate of 7,277 the DuTemp combined cycle gas turbine system will generate a gross of 55.76 Megawatts of electricity per hour, twenty‑four hours a day.  When we deduct 26 Megawatts of this electric current to maintain the plasma arc and for other plant requirements, we are left with 29.76 Megawatts per hour (714.24 Megawatts per day) available to supply the grid.

Relevant Experience of Power Generation Utilizing Synthesis Gas:

The DuTemp technical team will utilize General Electric gas turbines (however, some other heavy frame and aero derivatives can also be used) for producing electricity.  GE brings over 600,000 hours of operation on syngas, clearly enough to establish that the basics of syngas utilization in combustion turbines for electric power generation in simple or combined cycle modes are doable.  In fact, in Europe over eleven Gigawatt hours of power are produced using syngas.  Most of this is from conventional gasification methods.  The main reason this has not been common in North America is that natural gas here has been, in the past, readily available and inexpensive.  As natural gas prices increase, gasification will become more attractive.  Plasma gasification offers the best alternative as the least expensive and most versatile of the available systems.

GE's success with low and medium BTU fuel gases is the result of extensive full‑scale laboratory testing on various fuels for over 15 years at GE's Combustion Development Laboratory in Schenectady, New York.


 

DuTemp MSW to Electricity

  • Plasma Generating Systems
  • dissociate compounds into elemental atoms
  • 714.24 Megawatts per day

 

 

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