US 9,684,314 B1Granted

Gas collection

AssigneeNUtech Ventures

InventorsHaorong Li, Yanshun Yu, Daihong Yu

Life of this patent

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Abstract

A system includes a vessel configured to couple with a gas source for drawing gas into the vessel. The vessel is also configured to receive liquid. The system includes an overflow port in fluid communication with the environment external to the vessel. The overflow port is configured to separate gas within the vessel from the external environment. The system also includes an overflow conduit having an end within the overflow port so that when gas pressure within the vessel increases, liquid is received by the overflow conduit. Another system includes a tank defining an air space for receiving gas generated during the biodegradation of biomass feedstock. The second system also includes an exhaust port, a first evaporator, a first condenser, an expansion valve, and a compressor. The second system also includes a heat exchanger, a second evaporator, and a second condenser.

Claims3

Dependent claims

A system comprising:

a tank configured to receive biomass feedstock for biodegradation, the tank defining an air space for receiving gas generated during the biodegradation of the biomass feedstock;
an exhaust port coupled with the tank, the exhaust port configured to exhaust the gas generated during the biodegradation of the biomass feedstock from the air space of the tank;
a first evaporator disposed in the exhaust port for recovering heat from the exhaust gas;
a first condenser coupled with the first evaporator;
an expansion valve coupled between the first evaporator and the first condenser;
a compressor coupled with the first condenser;
a coil heat exchanger disposed in the tank for exchanging heat with the biomass feedstock during the biodegradation of the biomass feedstock;
a second evaporator disposed in the air space defined by the tank, the second evaporator coupled with the heat exchanger for recovering heat from the gas generated during the biodegradation of the biomass feedstock;
and
a second condenser coupled with the second evaporator.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/936,129Filed 5 Jul 2013 · us provisional application
Priority: 5 Jul 2012
Granted: 20 Jun 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

C12M 21/04
Bioreactors or fermenters specially adapted for specific uses: for producing gas, e.g. biogas
C12M 23/36
Constructional details, e.g. recesses, hinges: means for collection or storage of gas; Gas holders
C12M 23/58
Constructional details, e.g. recesses, hinges: reaction vessels connected in series or in parallel
C12M 41/24
Heat exchange systems, e.g. heat jackets or outer envelopes: inside the vessel