IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0399323
(2009-03-06)
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발명자
/ 주소 |
- Schuh, Allen John
- Schuh, Peter Allen
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
7 인용 특허 :
4 |
초록
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A system for making biofuels comprising methane, ethanol, and biodiesel comprises a tank (100) with a sealable lid (120). An algae mass (105), water, and either a yeast or bacterial culture (106) is added to the tank. Under high temperature conditions, sour (CO2-containing) methane is produced and s
A system for making biofuels comprising methane, ethanol, and biodiesel comprises a tank (100) with a sealable lid (120). An algae mass (105), water, and either a yeast or bacterial culture (106) is added to the tank. Under high temperature conditions, sour (CO2-containing) methane is produced and stored in a container (130). Under lower temperature conditions, ethanol and CO2 are produced. Heated or cooled water passed through a water jacket (160) that surrounds the tank maintains the proper temperature within the tank. The CO2 is stored in a second container (270). The sour methane and the CO2 are optionally passed through a scrubber. Scrubbed methane is suitable for use as a fuel and drives a generator (275) that supplies power to various parts of the system. Carbon credits will be available for CO2 that is trapped in the scrubber. A still (185) separates ethanol and water for later use. Biodiesel can also be made in the apparatus by first making ethanol, then employing a transesterification process.
대표청구항
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The invention claimed is: 1. A method for selectively producing a biofuel from algae, comprising:(a) providing a sealed reaction tank with a lid, said lid being removable and arranged to effect anairtight seal of said tank when installed on said tank,(b) providing said tank with a sampling and adjus
The invention claimed is: 1. A method for selectively producing a biofuel from algae, comprising:(a) providing a sealed reaction tank with a lid, said lid being removable and arranged to effect anairtight seal of said tank when installed on said tank,(b) providing said tank with a sampling and adjusting tube having two ends, an outer end and an inner end, said tube extending downward into said tank so that said outer end is outside said tank and said inner end is inside said tank, said inner end being open, said outer end containing an airlock for(i) allowing fluid to pass from said tank through said tube out through said airlock to permit sampling of the contents of said tank, and(ii) preventing air from entering said container via said airlock and said tube,(c) providing at least one storage container,(d) providing a conduit for passage of gas between said reaction tank and said storage container,(e) providing a stirrer for stirring the contents of said tank,(f) providing a supply of algae,(g) providing a supply of a seed substance selected from the group consisting of bacteria and yeast,(h) providing temperature-control means for said reaction tank,(i) providing a source of water,(j) adding a quantity of water, said supply of algae, and said supply of said seed substance to said reaction tank to provide a liquid feedstock mixture in said tank,(k) attaching said lid to said tank to seal said tank,(l) using said temperature control means to establish a temperature within said reaction tank that is suitable for said bacteria or yeast to act on said liquid feedstock mixture to produce a biofuel selected from the group consisting of methane, ethanol, and biodiesel,(m) activating said stirrer to stir said contents of said tank,(n) obtaining a sample of said feedstock mixture from said tank through said sampling andadjusting tube,(o) analyzing at least one condition of said feedstock mixture obtained via said tube, said condition selected from the group consisting of chemical composition, nutrient level, and pH,(p) if said condition is outside a predetermined tolerance range, then adjusting the composition of said feedstock mixture by adding a substance to said feedstock via said sampling and adjusting tube in order to maintain said condition of said feedstock within said predetermined tolerance range without allowing oxygen to enter said tank,(q) collecting said biofuel in said storage container,whereby a biofuel will be produced from said algae said biofuel can be transferred to said storage container, and said feedstock mixture in said tank can be monitored and adjusted without admitting oxygen-containing ambient air into said tank.
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