摘要:
Steam is reformed (i.e. reduced) to hydrogen in two or more successive stages by chemical reaction with intermediates, at least one of which is selected from tin, indium, germanium, molybdenum or WO.sub.2. The oxidized intermediate is regenerated to its original composition by reducing gas in one or more stages. With this multistaged processing in the proper sequence, the proportion of steam converted to hydrogen and the proportion of reducing gas utilized for reduction can both be increased over what is possible in single stage processes.
摘要:
A hydrogen rich gas such as pure hydrogen, ammonia synthesis gas, or methanol synthesis gas is generated by reacting steam with a nongaseous intermediate, whereby some of the steam is reduced to hydrogen and some of the intermediate is oxidized. Carbon dioxide may be added to or substituted for the steam, whereby carbon monoxide is produced in addition to or in lieu of H.sub.2. The oxidized intermediate is reduced by a reducing gas. The reducing gas is generated by partially reforming a light hydrocarbon such as natural gas or naphtha with steam and/or CO.sub.2, and then partially oxidizing the partially reformed gas with air. The low BTU exhaust gas resulting after reduction of intermediate oxide is used as fuel for the primary reformer. When ammonia synthesis gas is produced by this process, the purge and flash gases from the ammonia synthesis loop are added to the reducing gas.
摘要:
A process for the production of hydrogen and oxygen from water comprising the steps of forming ferric chloride from ferriferrous oxide by reaction with a chloride ion yielding substance, thermally reducing the ferric chloride to produce ferrous chloride, reducing the ferrous chloride to metallic iron, then oxidizing the metallic iron with water so as to produce hydrogen. The metallic iron may be formed by reducing the ferrous compound with hydrogen. Two specific reactant regenerative closed cycle systems are disclosed utilizing the process of this invention for the production of hydrogen and oxygen.
摘要:
Decomposition of water to hydrogen and oxygen with the aid of a thermochemical cyclic process based upon the iron/chlorine system by reduction of FeCl.sub.2 in the presence of H.sub.2 to Fe, oxidation of the Fe with steam to Fe.sub.3 O.sub.4, treatment of the hot Fe.sub.3 O.sub.4 with steam and chlorine to obtain oxygen, conversion of themixture of iron oxides so obtained with hydrogen chloride to FeCl.sub.2 and recycling of the FeCl.sub.2 to the reduction stage, wherein a part of the heat required for the process is supplied by heating the hydrogen and steam in indirect heat exchange with a hot coolant from a high temperature nuclear reactor. The conversion of the iron oxides to FeCl.sub.2 is carried out via the intermediate stage of dimeric FeCl.sub.3 and it is thus possible to convey the solid reaction products by free fall through the reaction zones.
摘要翻译:借助于基于铁/氯系统的热化学循环过程,将水分解成氢和氧,通过在H 2存在下将FeCl 2还原成Fe,将Fe用蒸汽氧化成Fe 3 O 4,用蒸汽处理热的Fe 3 O 4 和氯以获得氧气,用氯化氢将如此获得的氧化铁的混合物转化成FeCl 2并将FeCl 2再循环到还原阶段,其中通过以间接加热方式加热氢气和蒸汽来供应该方法所需的一部分热量 与来自高温核反应堆的热的冷却液进行交换。 铁氧化物转化为FeCl 2通过二聚FeCl 3的中间阶段进行,因此可以通过自由落体通过反应区输送固体反应产物。
摘要:
A slurry of either pure or dissolved liquid metal and its oxide is oxidized by steam to produce hydrogen, and then regenerated to its original composition by a reducing gas. The liquid metal can be tin, indium, or several others. The slurry approach makes greatly simplified operation in either the batch or continuous mode possible, and allows the all-important equilibrium point of the two reactions to be controlled independently of temperature. The mode of operation is further defined in order to achieve desirable process temperature conditions with adiabatic operation.
摘要:
There is disclosed a process for the preparation of hydrogen-rich gas by passing a gas mixture containing carbon monoxide and water vapor over a sulfided catalyst which includes nickel and/or cobalt, molybdenum and aluminum with the aluminum being present in an amount of from 0.1 to 1.0 part of aluminum per part of nickel and/or cobalt on a weight basis. The catalyst is prepared by impregnating an alumina carrier with one or more solutions of compounds of the catalysts in which at least 40%w of the aluminum that is used is added to the carrier by co-impregnation with the nickel and/or cobalt.
摘要:
A process is described for the dissociation of steam by liquid tin to form hydrogen gas and solid tin dioxide. The wet hydrogen gas is collected and dried and the tin dioxide is subjected to reduction to form liquid tin that is then recycled.
摘要:
A device for producing hydrogen gas and introducing it into the intake manifold of an internal combustion engine with the device being in the form of a container having iron balls therein heated by an exhaust pipe from the engine, and electrically energized heating device with the container being in communication with a steam producing device whereby water vapor passing over the heated iron balls will cause oxidation of the iron balls and production of hydrogen gas.
摘要:
METHOD OF REGULATING VOLTAGE AND ELIMINATING SHORT CIRCUITS BETWEEN ELECTRODES IN CELLS USED FOR ELECTROLYSIS OF ALKALI METAL CHLORIDE, BY THE STEPS OF ESTABLISHING A REFERENCE VOLTAGE DERIVED FROM A COMPONENT UNEFFECTED BY LOAD AND A COMPONENT PROPORTIONAL TO THE ELECTROLYSIS CURRENT OF THE CELL SUCH THAT THE REFERENCE VOLTAGE SIMU-
LATES THE CELL VOLTAGE THROUGHOUT THE ENTIRE LOAD RANGE, CONTINUOUSLY COMPARING AUTOMATICALLY THE CELL VOLTAGE WITH THE REFERENCE VOLTAGE, AND ADJUSTING THE CELL VOLTAGE IN DEPENDENCE UPON DEVIATIONS FROM THE REFERENCE VOLTAGE.