WASTE TO ENERGY TECHNOLOGY!

WPP Energy Corp, a national U.S. nonprofit organization, promotes effective clean energy policies, develops low carbon technology innovation strategies and works on new financial tools to stabilize greenhouse gas emissions. WPP concentrates on climate and clean energy issues at the state, national and international levels, as it works with diverse stakeholders from governments as well as the private and nonprofit sectors.

WPP assists states to create and implement innovative practices and public funding programs to advance clean energy markets and project deployment; creates networks of U.S. and international policy makers to address climate stabilization; advances effective, 21st century distributed innovation theories for climate technology; develops new finance and commercialization tools; and works to attract new investors to move clean energy technologies to the market more quickly.

WPP work is designed to greatly accelerate the commercialization of breakthrough low carbon technologies and to massively scale up existing clean energy technologies as rapidly as possible to strengthen the economy and stabilize climate change emissions. WPP is supported by major foundations, state governments and federal agencies.

1. INTRO

• We turn classical gasification upside down. Conventional biogas plants turn the entire input material into a product gas typically by means of pyrolysing the biomass into char and gasyIying this by using air.
   

• The WPP System consists of 3 main vessels or bed reactors. The pyrolyser at the bottom, the steam reformer in the middle and the pre-heater at the top.

2. PYROLYSER

• In its first stage the WPP System separates the input material by pyrolysing it into approximately 20% char and 80% pyrogas.
   

• The char is combusted into a flue gas in order to produce necessary process heat.

3. STEAM REFORMER

• The remaining 80% moves up into the steam reformer. Here the pyrogas is cracked and reformed into a high quality product gas, consisting mainly of hydrogen and carbon.
   

• Steam is generated by passing the hot product gas through a waste heat recovery boiler before it is then quenched and cleaned.

4. STAGED REFORMING

• The steam reformer is a simple homogenous purely gas phased reaction.
  It is spatially separated from the pyrolyser – therefore STAGED REFORMING

5. HIGH QUALITY PRODUCT GAS

• Unlike with common biomass gasification processes the product gas generated in the Blue Tower is very high in quality because it is unaffected from the flue gas from the char combustion.
   

• Common biogas plants achieve a product gas with approximately 30-50 % calorific value, where as the Blue Tower’s product gas achieves around 80% efficiency.

6. HEAT CARRIER

• A key feature of the Blue Tower is the use of a circulating bulk material as the heat carrying medium. This ensures that the heat carrying surfaces are always clean and that the input material such as sewage sludge maintains the required process heat.
   

• This makes it easily possible to use biomass input material which in other systems causes slogging, fouling and corrosion.

7. HEAT PROCESS

• The heat is transferred from the char combustion flue gas to the inert bulk heat carrier inside a simple moving bed reactor.
   

• On the way through this process (circulating to the top) the heat carrier first gives off its heat to the reformer and then the pyrolyser.
   

• The advantage of using a heat carrier circuit and a motor flue gas circuit is that the different waste heats can be collected and used to supply the collected heat where it is needed.

8. INTELLIGENT PROCESS - ONLY Simple Equipment Needed

• The pyrolyser and the reformer occur in separate gravity driven moving bed reactors. No further equipment is mounted inside.

• The heat carrying medium is moved by mechanical drive and gravity.

• At the end the Blue Tower generates electricity out of garbage like a power station out of coal or natural gas.

9. INPUT TO OUTPUT EFFICIENCY RATIO

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