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US 9,039,810 B2Granted
Fines capture and recycle system and uses thereof
AssigneeSynthesis Energy Systems, Inc.
InventorsFrancis Lau, Tsung-Yao Robert Sheng
Life of this patent
Estimating the term…
Abstract
A cyclone system for a gasifier having two or more cyclones arranged in series sharing a combined loop seal and dipleg is disclosed. Also disclosed is a method for capturing and recycling fines with the cyclone system.
Claims16
A cyclone system wherein the cyclone system comprises:
- a first stage cyclone having a first inlet and a first outlet, wherein the first inlet is connected to a fluidized-bed gasifier having two or more cyclone arranged in series, and receives a first gas-solid mixture from the gasifier and receives a first gas-solid mixture from the gasifier;
- a
- first dipleg connected to the first stage cyclone for collecting a first solid particle fraction separated from the first gas-solid mixture;
- a first loopseal connected to the first dipleg for receiving the first solid particle fraction;
- a second stage cyclone having a second inlet and a second outlet, wherein the second inlet is in fluid communication with the first outlet and receives a second gas-solid mixture from the first stage cyclone;
- a second dipleg connected to the second stage cyclone for collecting a second solid particle fraction separated from the second gas-solid mixture;
- a combined dipleg connected to both the first loopseal and the second dipleg;
- and
- a combined loopseal connected to the combined dipleg for receiving a mixture of the first and second solid particle fractions, and to the gasifier for feeding the mixture of the first and second solid particle fractions back to the gasifier.
6 more elements
A method for capturing and recycling fines from a fluidized-bed gasifier, comprising:
- delivering a first gas-solid mixture from a gasifier to a first inlet of a first stage cyclone;
- separating the first gas-solid mixture into a second gas-solid mixture and a first solid particle fraction in the first stage cyclone;
- feeding the second gas-solid mixture from a first outlet of the first stage cyclone to a second inlet of a second stage cyclone and collecting the first solid particle fraction sequentially through a first dipleg connected to the first stage cyclone and a first loopseal connected to the first dipleg;
- separating from the second gas-solid mixture a second solid particle fraction in the second stage cyclone;
- collecting the second solid particle fraction through a second dipleg connected to the second stage cyclone;
- collecting a mixture of the first solid particle fraction from the first loopseal and the second solid particle fraction from the second dipleg sequentially through a combined dipleg connected to both the first loopseal and the second dipleg and a combined loopseal connected to both the combined dipleg and the gasifier;
- and feeding the mixture of the first and second solid particle fractions from the combined loopseal back to the gasifier.
4 more elements
A fluidized bed gasifier system, comprising:
- a fluidized bed gasifier, and a cyclone system having two or more cyclones arranged in series, wherein the cyclone system comprises:
- a first stage cyclone having a first inlet and a first outlet, wherein the first inlet is in fluid communication with the gasifier and receives a first gas-solid mixture from the gasifier;
- a first dipleg connected to the first stage cyclone for collecting a first solid particle fraction separated from the first gas-solid mixture;
- a first loopseal connected to the first dipleg for receiving the first solid particle fraction;
- a second stage cyclone having a second inlet and a second outlet, wherein the second inlet is in fluid communication with the first outlet and receives a second gas-solid mixture from the first stage cyclone;
- a second dipleg connected to the second stage cyclone for collecting a second solid particle fraction separated from the second gas-solid mixture;
- a combined dipleg connected to both the first loopseal and the second dipleg;
- and a combined loopseal connected to the combined dipleg for receiving a mixture of the first and second solid particle fractions, and to the gasifier for feeding the mixture of the first and secon.d solid particle fractions back to the gasifier.
5 more elements
A method for capturing and recycling fines, comprising:
- generating a first gas-solid mixture in a fluidized-bed gasifier, delivering the first gas-solid mixture from the gasifier to a first inlet of a first stage cyclone;
- separating the first gas-solid mixture into a second gas-solid mixture and a first solid particle fraction in the first stage cyclone;
- feeding the second gas-solid mixture from a first outlet of the first stage cyclone to a second inlet of a second stage cyclone and collecting the first solid particle fraction sequentially through a first dipleg connected to the first stage cyclone and a first loopseal connected to the first dipleg;
- separating from the second gas-solid mixture a second solid particle fraction in the second stage cyclone;
- collecting the second solid particle fraction through a second dipleg connected to the second stage cyclone;
- collecting a mixture of the first solid particle fraction from the first loopseal and the second solid particle fraction from the second dipleg sequentially through a combined dipleg connected to both the first loopseal and the second dipleg and a combined loopseal connected to both the combined dipleg and the gasifier;
- and feeding the mixture of the first and second solid particle fractions from the combined loopseal back to the gasifier.
4 more elements
Dependencies are inferred from the claim text.