Our own technology High Temperature Conversion of Waste HTCW is an innovative and already proven reactor, allowing a zero-emission transfer of waste and other fuels to clean energy, at a world-record energy efficiency.
Our advanced HTCW is a one-stage, fixed-bed, combined co-/counter-current gasifier.
As it is one-stage, it is cheap.
Being a shaft-reactor without moving parts inside, it is not only cheap, but also very reliable and robust.
As most of its volume is the solid fixed-bed and only little is gas, it is safe.
The co-current flow in the upper part of the reactor ensures, that the resulting gas is not cross-contaminated with the fresh waste, producing a gas clean enough for a very simple final gas cleaning.
The gas is already so clean, the gas cleaning thus so easy and low-cost,
that the money is freed for a gas usage higher in efficiency and lower in CO2. Pure enough to be suitable for membrane technologies, e.g. hydrogen or high-efficient gas turbines.
The Sankey-chart to the left is without district heating, no direct use of steam, no extra fuels, just waste and uses a conservative calculation of the efficiency (e.g. the upper heating value for the input energy)
Because of the smart arrangement of reaction zones and the “HT”,
= high temperature of 1600°C minimum,
the gas is not a dirty flu gas, it is a fuel gas already,
free of all organic chemistry, no PCBs, no Seveso-dioxin or -furan.
No complex molecule or compound can survive that heat:
Tyres turn into fine carbon dust then into inorganic gas,
bacterias and viruses are completely sterilized and destroyed.
Dioxins, furans, PCBs, tars, oils, industrial waste, paint, plastics are completely cracked, down to hydrogen and carbon monoxide.
Even asbestos (a former cancer-causing fire-proofing fibre) turns into harmless silicates.
The inorganic impurities (H2S but not SO2, NH3 but not NOx,
little HCl and very little dust) are all removed and either used or destroyed. Also, the heavy metals and the mercury are safely captured.
The ash turns into mineral slag, the slag depending on the feed either to valuable blast furnace sand (what is this?)
or phosphorus fertilizer (another threat to our future. Why? Find it here!)
The fuel gas consist mostly of hydrogen and carbon-monoxide (so-called SynGas), with some H2O, N2 and CO2.
The impurities mentioned above are removed by simple,
over 100-years-long proven gas cleaning technologies.
The resulting gas is so pure, it will be used in high-efficient gas-turbines or gas engines for maximum electricity at minimum CO2,
membrane units (e.g. to retrieve pure hydrogen), catalytic reactors e.g. for producing methanol, ethanol, natural gas or even turning the carbon monoxide into more hydrogen.
The first reactor in Arnstadt/Thuringia operated for years.
Not one solution can fit all our expexctations alone:
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HTCW plus all the other technologies can do this:
And even better: Tailor the plant to YOUR local needs.