The method of producing hydrogen

 

(57) Abstract:

The invention relates to the chemical industry, in particular to methods of producing highly pure hydrogen gas. The hydrogen is produced from water vapor by its conversion in the hot environment in high-voltage discharge iron, then subjected to two-stage drainage and collection in the intermetallic complemetary, driving the desorption of hydrogen at up to a high degree of purity, part of 99.99 vol.%. 1 Il.

The invention relates to the chemical industry, in particular to methods of producing highly pure hydrogen gas.

Well-known different ways to produce hydrogen gas:

(Technical dictionary. M: GANTI heavy industry of the USSR, 1939, S. 219):

- from water by electrolysis;

- from the water by the conversion of water vapor in the environment of hot iron to iron oxides and gaseous hydrogen;

from water gas (CO2+H2with the use of various catalysts, including platinum and palladium;

from coke oven gas by deep freezing admixtures.

A known method of producing hydrogen by water-steam conversion of carbon monoxide in the presence of copper-zinc-mokai of hydrogen purity (99,99%).

The closest analogue is the method of producing hydrogen by reforming reactor water vapor in the environment of hot iron to iron oxides and hydrogen (SU 1125186, publ. 23.11.1984).

This method is characterized by high cost and does not provide high purity hydrogen.

The invention is based on known chemical reactions produce hydrogen (Patisson Muir. Chemistry of fire. M.: Publishing sabashnikovyh, 1899)

3Fe+4H2O=Fe3O4+4H2.

This reaction occurs by blowing steam of hot iron of high purity.

The objective of the invention is to obtain highly pure hydrogen (99,99%) when using as a raw material for such reactions of iron in the EAST at 7123, containing 0.05 to 0.15% by weight carbon and other impurities, and the application of the voltage controlled discharge to maintain high up to 1000oWith the temperature in the reactor, this is the technical result of the invention.

This object is achieved by a method of producing hydrogen by reforming reactor water vapor in the environment of hot iron to iron oxide and hydrogen gas. Spolarich made of iron, in the tank boiled distilled water, forming a saturated steam, it is served in the cooling jacket of the reactor, forming superheated steam, high-voltage spark gap serves AC voltage of 3.6 kW, simultaneously through the nozzle in the bit period of introducing superheated steam, and the resulting iron oxides using vibration dumped in team capacity, wet hydrogen release from the reactor to a condenser cooled by water from the water system, condensate discharge, then pre-dried hydrogen is subjected to final drying in a recycled silikagelevye cartridges, then the hydrogen through a microporous filter distribute to consumers in intermetallic comprimario, when desorption of hydrogen ensure its purity up to 99.99 vol.%.

The drawing shows a device for producing hydrogen.

Take the reactor 1, consisting of the cooling jacket 2, high-voltage spark gap with two electrodes: 3 - permanently fixed tungsten and 4 - electrode made of iron, dvigausciesya inside the reactor, and the gate 5 for removal of formed higher oxides of iron.

In the tank 6 by means of a gas burner 7 is boiled distillirovannoi burner drop in the duct 9. The gaps 3, 4 serves AC voltage of 3.6 kW and with the help of the regulator 10 is injected electrode 4 before the formation of the discharge, subjecting it to vibration to reset the formed oxides.

Saturated water vapor overheat in the cooling jacket and through the nozzle 11 direct it to the bit period. The formed iron oxides through the gate 5 is removed in the collector 12. Wet hydrogen release from the reactor to the condenser 13, the cooled water from the water system 14, and the resulting condensate through the valve 15 are dropping. After the first stage of drying the hydrogen is introduced into the regenerated alternately silica gel cartridges 16, and the regeneration is carried out using heating cartridges and blowing dry air through the heater 17. Then drained the hydrogen through a microporous filter 18 distribute to consumers in intermetallic comprimario hydrogen 19, which, when desorption of hydrogen ensure its purity up to 99.99 vol.%.

Example (calculated)

To ensure the productivity of hydrogen, equal to 100 kg per year (350 g/h) in two shifts, in the electric discharge heat the iron electrode to 800-1000oWhen the voltage of 3.6 kV, current up to 3A and consumed is elesa, equal to 200 kcal/g-mol. Thus, for the formation of 100 kg of hydrogen used taking into account thermal losses 5 thousand kWh total cost depending on the region not more than 5 thousand rubles

Given the cost for one gram of highly pure hydrogen, which is equal to the catalog "Merk" 50$ form annual revenue from sales in the amount of 5 million $ under favorable market conditions, deficient in highly pure hydrogen used in fusion research and in numerous gas analytical laboratories.

The method of producing hydrogen by reforming reactor water vapor in the environment of hot iron to iron oxides and gaseous hydrogen, characterized in that the use of the reactor, consisting of a cooling jacket and a high-voltage spark gap with two electrodes, one of which is made of iron, in the tank boiled distilled water, forming a saturated steam, it is served in the cooling jacket of the reactor, forming superheated steam, high-voltage spark gap serves AC voltage of 3.6 kV, at the same time through a nozzle in the bit period of introducing superheated steam, and the resulting iron oxides using vibration shed sat in the Oia, condensate discharge, then pre-dried hydrogen is subjected to final drying in a recycled silikagelevye cartridges, then the hydrogen through a microporous filter distribute to consumers in intermetallic comprimario that when desorption of hydrogen ensure its purity up to 99.99 vol.%.

 

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FIELD: powder metallurgy.

SUBSTANCE: starting powders of silicon, 40 to 400 mcm, and niobium, below 63 mcm, are taken in proportion (1.33-1.38):1 to form monophase product and in proportion (1.44-1.69):1 to form multiphase product. Powders are subjected to mechanical activation in inert medium for 0.5 to 2 min, ratio of powder mass to that of working balls being 1:20. Resulting powder is compacted and locally heated under argon atmosphere to initiate exothermal reaction producing niobium silicide under self-sustaining burning conditions. Process may be employed in metallurgy, chemistry, mechanical engineering, space, nuclear, and semiconductor engineering, and in electronics.

EFFECT: found conditions for monophase and multiphase crystalline niobium silicide preparation.

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