Synergetic system and method for waste treatment
AssigneeDürr Systems AG
InventorsAke Kallstrand, Lisa Larsson
Life of this patent
Estimating the term…
Abstract
A synergetic system for waste treatment is provided. The synergetic system includes a waste treatment system configured to perform biological treatment of waste. Additionally, the synergetic system includes a gas purification system configured to purify exhaust gas generated during the biological treatment of the waste. The synergetic system further includes a feeding system configured to feed excess heat from the gas purification system back to the waste treatment system. The waste treatment system is further configured to use the fed back excess heat for the biological treatment of the waste.
Claims16
A synergetic system for waste treatment, comprising:
- a waste treatment system configured to perform biological treatment of waste;
- a gas purification system configured to purify exhaust gas generated during the biological treatment of the waste, the gas purification system comprising
- a single heat-transfer bed filled with ceramic material,
- a heat exchanger arranged in the heat-transfer bed, wherein the heat exchanger is configured to transfer heat from the ceramic material to a heat transport medium flowing through the heat exchanger,
- a gas flow control system configured to cause the exhaust gas to flow through the ceramic material such
- that the exhaust gas oxidates while flowing through the ceramic material, wherein the ceramic material is configured to store heat released by the exhaust gas during oxidation, and
- wherein the gas flow control system is further configured to periodically reverse a flow direction of the exhaust;
- and
- a feeding system configured to feed excess heat from the gas purification system back to the waste treatment system via the heated transport medium,
- wherein the waste treatment system is further configured to use the fed back excess heat for the biological treatment of the waste.
A synergetic system for waste treatment, comprising:
- a waste treatment system configured to perform biological treatment of waste;
- a gas purification system configured to purify exhaust gas generated during the biological treatment of the waste, the gas purification system comprising a gas flow control system and a bypass, the gas flow control system configured to:
- cause the exhaust gas to flow through heated first ceramic material such that the exhaust gas heats up and oxidates;
- and
- cause purified exhaust gas to flow through second ceramic material towards an outlet for releasing the purified exhaust gas;
- and
- the bypass configured to divert part of the purified exhaust gas for bypassing the second ceramic material,
- a feeding system configured to feed excess heat from the gas purification system back to the waste treatment system,
- wherein the waste treatment system is further configured to use the fed back excess heat for the biological treatment of the waste.
A method for waste treatment, the method comprising:
- performing biological treatment of waste using a waste treatment system;
- purifying exhaust gas generated during the biological treatment of the waste using a gas purification system, the purifying comprising:
- passing the exhaust gas through a single heat-transfer bed filled with ceramic material,
- periodically reversing the flow direction of the exhaust gas through the ceramic material using a gas flow control system,
- oxidating the exhaust gas as it flows through the ceramic material, wherein the ceramic material stores heat released by the exhaust gas during oxidation, and transferring heat from the ceramic material to a heat transport medium flowing through a heat exchanger arranged in the heat-transfer bed;
- and
- feeding excess heat from the gas purification system back to the waste treatment system via the heated transport medium using a feeding system;
- and
- using the fed back excess heat for the biological treatment of the waste in the waste treatment system.
Dependencies are inferred from the claim text.