Waste to hydrogen conversion process and related apparatus

a technology of waste to hydrogen and conversion process, which is applied in the direction of cell components, sustainable manufacturing/processing, and final product manufacturing, etc., can solve the problems of high energy consumption, high cost, and inability to cleanly separate hydrogen from steam reforming process, and achieve the effect of efficient steam reduction

Inactive Publication Date: 2009-03-19
TRUSTEES OF BOSTON UNIV
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  • Abstract
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  • Claims
  • Application Information

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Benefits of technology

[0013]In one aspect, the invention employs an oxygen-ion-conducting solid electrolyte at elevated temperatures with a novel system of electrodes to efficiently ...

Problems solved by technology

The traditional steam reforming process does not allow clean separation of hydrogen from carbon monoxide and the other impurity oxides that are generated in the process in a single step.
This process is energy intensive and expensive but can produce clean and pure hydrogen.
This process produces pure hydrogen and syn-ga...

Method used

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  • Waste to hydrogen conversion process and related apparatus
  • Waste to hydrogen conversion process and related apparatus
  • Waste to hydrogen conversion process and related apparatus

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Embodiment Construction

[0026]In one or more embodiments, carbon-based reversible and regenerative solid oxide fuel cell system is provided that can be operated at zero to near zero pollution emission and within environmental hazard reduction goals. The device when operated as an electrolyzer can produce hydrogen at high throughputs from steam and carbon feed and the same device can be operated in the reverse mode as a fuel cell to produce electricity from hydrogen and air / oxygen.

[0027]Operation of the electrochemical device for synthesizing and separating hydrogen is shown in FIG. 1. The cell is constructed with two porous electrodes that sandwich an electrolyte. The device includes a cathode 110 that is capable of stably operating at high temperatures and a liquid metal anode 120, separated by a solid oxide electrolyte 130, e.g., an oxygen ion conducting membrane. The system further includes appropriate current collectors 140, 150 for the cathode and anode, respectively. This system, operating at a tempe...

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Abstract

A reversible electrochemical system includes a first electrode comprising liquid silver metal and a second electrode, said first and second electrodes separated by a oxygen ion-conducting solid electrolyte; a conduit for directing a first reactive material across the second electrode; and a conduit for contacting second reactive material with the first liquid silver electrode, wherein the cell is capable of steam electrolysis when the polarity of the electrodes is selected such that the liquid silver is an anode and the cell is capable of electrical energy generation when the polarity of the electrodes is selected such that the liquid silver is a cathode.

Description

RELATED APPLICATIONS[0001]This application claims the benefit of priority under 35 U.S.C. § 119(e) to co-pending application Ser. No. 60 / 691007, filed on Jun. 16, 2005, entitled “Solid Oxygen Fuel Cell,” which is incorporated herein in its entirety by reference.[0002]This application claims the benefit of priority under 35 U.S.C. § 119(e) to co-pending application Ser. No. 60 / 760906, filed on Jan. 20, 2006, entitled “Waste To Hydrogen Generation Using Solid Oxide Membrane Technology,” which is incorporated herein in its entirety by reference.BACKGROUND[0003]This invention relates to methods and systems for steam electrolysis. In particular, the invention relates to the conversion of waste materials into hydrogen. This invention further relates to reversible systems and methods for steam electrolysis and energy generation using solid oxide technology.[0004]Steam reforming is a process that involves reaction of methane and / or other hydrocarbons with steam at temperatures between 700-1...

Claims

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Application Information

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IPC IPC(8): C25B1/02C25B9/14H01M8/10
CPCC01B3/50C01B2203/0495C25B1/06C25B9/14H01M4/8621H01M4/90Y02E60/528H01M8/1246H01M8/186H01M2004/8684Y02E60/366Y02E60/521Y02E60/525H01M4/9041Y02E60/36Y02E60/50Y02P70/50C25B1/04C25B11/00C25B11/033
Inventor PAL, UDAY B.GOPALAN, SRIKANTH
Owner TRUSTEES OF BOSTON UNIV
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