Large scale P recovery in the phosphorus industry

Large scale P recovery in the phosphorus industry

Large scale P recovery in the phosphorus industry – Experiences from prac:ce Presented by: Christopher Thornton P recovery and reuse I
3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – 2nd March 2012
Chris Thornton
Industrial P-recycling
from secondary sources
- potential
- progress
- perspectives
www.phosphate-­‐forum.org 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°2 NL: two routes today •  Thermal route to phosphorus
high-tech industrial needs for P4
very high purity phosphoric acid
à removal of impurities
à adaptable to different secondary materials
•  Processing into fertiliser production
combination with P-rock based NPK products
à micro-nutrients can be used
à lower cadmium than rock
3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°3 Thermphos, NL •  Electrothermal P furnace Coke + electricity -­‐> CO (energy) + P4 + slag 600 KT/y rock -­‐> 80 Kt/y P 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°4 Thermphos, NL •  Sewage sludge incinera:on ash P-­‐content: -­‐ secondary treatment = 5 – 8% P -­‐ biological P-­‐removal STP = 10 – 12% P
•  Other secondary sources -­‐ manure gasifica:on residues -­‐ P-­‐containing industry/food wastes •  Issues -­‐ handling / prepara:on / granula:on -­‐ copper, zinc 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°5 Thermphos, NL •  Integration with sewage policy
Chemical P-removal:
- iron dosing à up to 10% Fe in ash à incompatible
- aluminium dosing à compatible
à separate handling of iron dosed/no-iron sludge
and of sludge where no P-removal (low P)
[ all STP operate P-removal in Netherlands ]
•  Thermphos P-recycling underway
- sewage ash: SNB (NL), Frankfurt (D) …
- other P-rich streams
- 10 000 tonnes ash recycled 2012
- Objective: 100% recycled by 2020 (80 kt/y P)
www.thermphos.com
3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°6 Amfert (ICL), NL •  Recyling P in fer:liser produc:on -­‐ sewage sludge incinera:on ash -­‐ chicken manure incinera:on ash •  Integra:on into fer:liser process -­‐ upstream of acidula:on = ensures P availability -­‐ adjustment of 1ry nutrients balance (NPK) -­‐ use of micro nutrients in wastes (Fe, B, Cu, Mn, Mo, Zn) -­‐ granula:on -­‐ marke:ng 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°7 Amfert (ICL), NL •  Advantages -­‐ P-­‐stewardship, local sourcing -­‐ CO2 savings •  P-­‐recycling underway -­‐ small quan::es of 2ry materials tested since 2011
•  Process modifica:ons -­‐ transport, storage systems -­‐ enclosure of conveyor systems
•  Objec:ve: 10-­‐15% of rock used = 1 500 -­‐ 2 000 tP/y hap://www.iclfer:lizers.com/Fer:lizers/Amfert/Pages/Environment.aspx 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°8 Japan •  Strategic demand for P-­‐acid supply pharmaceu:cals, metal -­‐ electronics industry, food and treatment, flame retardants, bio-­‐industry catalysts -­‐ biofuels = need to close P-­‐loop
•  No na:onal P-­‐resources
•  Na:onal import: 750 KtP/y
•  Experience and R&D -­‐ struvite produc:on -­‐ incinera:on ash P-­‐recovery -­‐ calcium silicate hydrate adsorp:on, -­‐ bio-­‐algae processes -­‐ … 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°9 Japan •  Phosphorus Recycling Council of Japan -­‐ 70 corporate members -­‐ R&D ins:tu:ons, local authori:es, user industries
•  Possible secondary sources -­‐ sewage sludge ash -­‐ animal wastes -­‐ steel slag -­‐ food & drink industries
•  Industrial project -­‐ business model -­‐ Thermphos technology transfer 3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°10 Chris Thornton
Global Phosphate Forum
[email protected]
3RD SUSTAINABLE PHOSPHORUS SUMMIT
Sydney 29th February – slide
2nd March
2012
n°11