Fractioned separation of valuable substances from aqueous many-component mixtures
A multi-component and mixture technology, applied in the direction of water pollutants, fertilizers made from biological waste, educts, etc., can solve problems such as waste
Active Publication Date: 2020-03-31
IGAS ENERGY GMBH
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Problems solved by technology
Useful valuable substances are wasted
Method used
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[0024] The present invention achieves this task by providing a method which is able to completely convert all components of an aqueous multicomponent mixture, for example sewage sludge, into valuable substances and which allows the valuable substances to be recovered stepwise. Value substances can easily be combined from the individual fractions and returned to the value substance circuit. The method allows recovery and conservation of raw material resources such as phosphorus.
[0025] The subject of the present invention is a method for the stepwise separation of valuable substances from an aqueous multicomponent mixture, comprising compressing the aqueous multicomponent mixture to 25-35 MPa, heating the compressed aqueous multicomponent mixture to 200-300 °C and separating the first value substance fraction 41, further heating the compressed aqueous multicomponent mixture to 300-400°C and separating the second value substance fraction 42, further heating the compressed aque...
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Abstract
The invention relates to a method for the fractioned separation of valuable substances from aqueous many-component mixtures such as aqueous wastes, sludges and sewage sludge under supercritical conditions. The invention also comprises valuable substance fractions that are enriched after the method according to the invention, more particularly phosphorous-containing and phosphorous- and ammonium-containing compounds such as fertilisers and synthesis gas as an energy source and as a valuable substance for the chemicals industry. The invention comprises devices for carrying out the methods. Withthe method and devices according to the invention, valuable substances can be completely recovered from wastes, sludges and sewage sludge and given a new use. The methods and devices are particularlysuitable for recovering phosphorous and ammonium in the form of plant-available fertiliser, for recovering metals and heavy metals, for producing synthesis gas and for obtaining hydrogen from synthesis gas, i.e. for mobility.
Description
technical field [0001] The present invention relates to a method for the stepwise separation of valuable substances from aqueous multicomponent mixtures such as aqueous wastes, slurries and sewage sludge under supercritical conditions. The present invention also includes the value substance fraction enriched by the method according to the invention, in particular phosphorus-containing and ammonium-containing compounds such as fertilizers and synthesis gases as energy sources and value substances for the chemical industry. The invention includes apparatus for carrying out the method. With the method according to the invention and the device according to the invention, valuable substances can be completely recovered from waste, sludge and sewage sludge and made available for new use. In particular, the method and apparatus are suitable for the recovery of phosphorus and ammonium in the form of plant-usable fertilizers, the recovery of metals and heavy metals, the production of ...
Claims
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IPC IPC(8): B09B3/00C02F11/08C02F11/18C05F3/00C05F7/00C05F9/00
CPCC05F3/00C05F7/00C05F9/00C02F11/086C02F1/20C02F1/52C02F2101/105C02F2101/16C02F2101/20Y02P20/145Y02E50/30Y02P20/129Y02W30/40B09B3/40Y02P20/54C05F9/02Y02W30/20Y02W10/20Y02W30/52Y02W30/50B09B3/00C02F11/18C02F11/145C01B3/02C02F1/5245C02F2103/20C02F2103/32C02F2303/10C05F5/00B09B2101/30
Inventor K-H·伦茨
Owner IGAS ENERGY GMBH