Clean Coal Process and Technology

2007 study article - pdf
powerpoint presentation in flash

1. The technology can process brown coal (lignite), coal and or petroleum coke into a stable emulsified fuel with the average particle size of 70 microns. The technology is already commercialized on a large industrial scale in Russia Nexgen would own the rights and the intellectual property for the rest of the world.
2. All fuel in this process is derived from a cavitational process combined with ultrasound, when coal is affected by this process the coal fuel which is comparable to bunker C fuel during the combustion process we can burn 99% on average of the coal input in addition we can reduce NOX's by 100%, acid gases SO2 & SO3 by 50% and reduce fly ash by 99%.
3. This technology is a proven clean coal technology and produces a composite fuel and no additives are required unlike conventional coal fired system currently in use today.
4. The basis of the technology is a proprietary cavitational and ultrasound destruction of coal molecule in a water media, which in fact destroys the coal molecules(long chain molecules) the process delivers a stable and homogeneous fuel and therefore provides an even burn and stable burn and prevents load swings.
5. This process is hydrocracking of coal molecules surface area contact provides and oxygen increase and significant increases in free radicals which increases chemical properties of the the raw coal feed stock to provide almost perfect fuel for complete combustion
6. Particle size of the coal in emulsions is 70% @ less than 70 micros and 30% from 71 microns to 200 microns this fuel emulsions remains stable and in suspension for at least 24 month's without any chemical additives and 2 or 3 days after processing the fuel becomes viscous like Bunker C.\ The fuel can be easily dewatered and shipped anywhere in the world for export.
7. This fuel can be stored in standard storage tanks and distributed and pumped via normal piping systems.
8. This fuel can be realized from low cost brown coals and can also be used as a fertilizer for growing food crops (Humic acid) worth a lot of money and in demand world wide; Operating cost the total energy consumed to process 1 tone of coal is less than 30KW < $3.00/tone
9. Typical coal crusher loose on average 1600 grams of metal per tone of coal crushed and therefore this metal ends up in the flue gas and in the atmospheric emissions form coal fired boilers in comparison when using our process on average we produce less than 50 grams per tone of coal processed.
10. In order to process coals our technology requires the following equipment

• A crusher to crush coal to average size of 10ML's
• This 10 mil powder is sent to an acoustic and cavitational processing unit
• Other coal dust and waste streams from the coal mining operation are also sent to the process, this is a 3 stage process
• The system is extremely compact for example a 30tonne/hour plant consists of 4 cavitational pumps and 4 technological tanks which require 2 areas 16x16x 14 meters and a second area of 9x6x7 meters for a total volume of 1386 M3 which is equal to 46.2M3 per/ton of productivity.

11. The system can be easily scaled to any size
12. The consumables in the cavitation pumps (sacrificial liner) is 200 hours which is 2 weeks 16 hours/day and is a low cost replacement which can be changed in 15 minutes during operation
13. The fuel produced is safe and not explosive in nature. as we mix water and coal the initial calorific value of the fuel actually go down approximately 4% less than the original raw coal however since we eliminate coal losses and combustion losses by as much as 25% on average the economic benefits far out way this occurrence, we reduce fly-ash by more than90% and reduce emissions significantly and consume 99% of the coal.
14. Capital cost of conventional coal system is roughly $10/tone/year. Our system capital cost is $1.50/tone/year, our process provides significant reductions in capital and operating cost each year millions of tones of coal is wasted in conventional systems in the form of coal waste streams and coal dust which is a significant hazard this does not occur in our system.
    
    Our fuel can be combusted in a conventional spray nozzle burner system or fluid bed and or a catalytic oxidation process. The fuel can be shipped in a dry powdered form after being dewatered from its emulsion state and regain its original chemical properties and plasticity.
15. Our fuel burns at an average temperature of 1200C instead of 1500C which also provide significant advantages over conventional coal systems.
16. Each system is designed to operate 16 hours /day this is because our systems produce more fuel that can be possibly consumed by any given power plant. In other words we produce more clean fuel than an operating boiler or power plant can consume in a 24 hour period this is why we only need to operate 16 hours/day this always leave us an 8 hour maintenance window should we require it.