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Hydrogen Generating Plant by Pressure Swing Adsorption with H2 Purifying System

Pressure Swing Adsorption(PSA) is used to separate hydrogen gas from other gases in adsorption tower by feeding the gas under certain pressure. For the generation of pure hydrogen out of most raw hydrogen sources, we offers Hydrogen generation system for capacities from 10 to 25.000 Nm3/h and purities of up to 99.999 per cent by volume. The main advantages of this technology is its low cost,  minimal maintenance requirements .
The Hydrogen Purifying System removes oxygen from Hydrogen via a catalyst to get high purity H2 after adsorption of drying through the dust filter. PSA Hydrogen generator plants allow production of high-purity Hydrogen from air, which membrane systems are unable to provide – up to 99.9999% Hydrogen. The system can remove oxygen levels down to 1ppm. with one step of purification, the purity can reach to 99.999~99.9999% and dew point can be lower than -70°C; with second purification step, O2 can be lowered down to less than 0.1ppm and dew point can be lowered to -90°C.
Pressure swing adsorption technology is the most prominent achievement in recent years in the field of gas separation. Due to the invention of this technology many problems typical of hydrogen PSA plants have been resolved.
As one of the leading suppliers of these technologies worldwide, Fukuzawa can integrate all processes offered into the customer's existing processes.

 

Specifications
capacities	10 to 25.000 Nm3/h
H2 Purity %	98-99.999%
Pressure	≤ 700 kilopascal
Oxygen Content	≤ 1ppm
Dew Point	≤-60°C

 

 

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Hydrogen Generating Plant by Natural Gas Steam Reforming

Bulk hydrogen is usually produced by the steam reforming of , methane or natural gas, LPG ,liquid gas or naphtha  At high temperatures (700–1100 °C), steam (H₂O) reacts with methane (CH₄) to yield syngas. Hydrogen can be generated from natural gas with approximately 80% efficiency.In a second stage, further hydrogen is generated through the lower-temperature water gas shift reaction, performed at about 130 °C:

CH₄ + H₂O → CO + 3 H₂ + 191.7 kJ/mol

CO + H₂O → CO₂ + H₂ - 40.4 kJ/mol

the oxygen  atom is stripped from the additional steam to oxidize CO to CO₂. This oxidation also provides energy to maintain the reaction. Additional energy required to drive the process is generally supplied by burning some portion of the methane. hydrogen will be obtained by converting the reforming effluent to reduce the amount of of CO content and the shift gas is purified through PSA to get the pure H2 , the capability of hydrogen generation is from 10 to 5.000 Nm³/h at purities of up to 99.999+ per cent by volume.

Specifications
capacities	10 to 5.000 Nm3/h
H2 Purity %	99-99.999%
Adsorption Pressure	1200 - 1900 kilopascal

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Hydrogen Generating Plant by Ammonia Decomposition

we design and manufactur Hydrogen Generator plant by Ammonia Decomposition that is more efficient than the standard, Ammonia is a compound of nitrogen and hydrogen with the formula NH₃  , Because NH₃ boils at −33.34 °C at a pressure of 101 kilopascal, the liquid must be stored under high pressure or at low temperature  ,Liquid ammonia is used as source for hydrogen generator.The liquid ammonia is vaporized and is heated by decomposition with catalyst into mixed gas containing 75% hydrogen and 25% nitrogen.
high purity gas is produced by heat regenerating through working at normal temperature.
 
Plant Features: simple operation , low cost, design for long service life, compact structure, simple to install , high operational reliability ,fully automatic operation

Specifications
capacities	5 to 450 Nm3/h
H2 Purity %	98-99.999%
Pressure	50 - 200  kilopascal
Oxygen Content	≤ 2 ppm
Residual Ammonia	≤ 3 ppm
Dew Point	≤-65°C

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Hydrogen Generating Plant by Methanol
Methanol is a liquid under normal conditions, allowing it to be stored, transported and dispensed easily, much like gasoline and diesel fuel is currently. Methanol is already used today on a large scale (about 37 million tonnes per year) as a raw material to produce numerous chemical products and materials . One m3 of methanol at ambient pressure and temperature contains 1660 Nm3 of hydrogen (H2) compared to liquid hydrogen; one m3 of liquid hydrogen (LH2) at -253°C contains 788 Nm3 of hydrogen (H2)
Hydrogen can be derived from disassociation of Methanol as well as Natural Gas. These units are considered where the Hydrogen production requirements are larger than 200 NM3/hr Hydrogen .

Hydrogen generation by methanol and water vapor conversion is one of low cost, simple user friendly operation and very easy maintenance , industrial hydrogen generating method which is developed in the last two decades.

In a first stage a mixture of methanol and DM water is vaporized in heat exchangers , at the action of a catalyst ,Methanol is converted to CO and H2  . In a second stage, CO and H2O is converted to CO2 and H2 at the action of a catalyst

CO and CO2 separated from the decomposed gases by PSA technology, high purity hydrogen is produced by methanol reforming combined with a PSA purification step , water vapor is condensed and recycled to the storage tank.

 

Specifications
Hydrogen capacities	50 to 2500 Nm3/h
H2 Purity %	99.9-99.999%
Pressure	800 - 1900  kilopascal

 

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Hydrogen Generating Plant by Water Electrolysis
there is Two types of cells are popular in this system , solid oxide electrolysis cells (SOEC) that is the most advanced Water Electrolysis technology in the market today and alkaline electrolysis cells (AEC) with lower purity of hydrogen and  larg capacities.
In this system high purity DM water is broken to H2 and O2. Hydrogen is evolved on cathode side of cells and Oxygen on anodes of cells. . Hydrogen and Oxygen come out separately from cells into Hydrogen separator and Oxygen separator. Then cooled in heat exchangers by cooling water and separated from electrolyte by gravity. Then washed by DM water and clean gases go out through demisters that is on top of whashing tower , then hydrogen dry by dryer section ,  Approximately 5% of industrial hydrogen is produced by electrolysis , the amount of power consumed by these plants is 4.5 kw/h (per cubic meter of hydrogen)

Specifications
Hydrogen capacities	5 to 450 Nm3/h
Oxygen capacities	2 to 200 Nm3/h
H2 Purity %	98-99.9%
O2 Purity %	98-99.5%
Pressure	500 - 2500  kilopascal
DC Power consumption	< 4.5 kw/h (per cubic meter of hydrogen)
Electrolyte	30% KOH or potassium carbonate
Dew Point	≤-80°C