Electrolyser modular

In the chlorate industry, EMOS has proven its utility and cost-effectiveness in several production units throughout North America. It has been developed from an industrial perspective based on a flexible modular system and has demonstrated good reliability with over five years of continuous operation in some chlorate facilities. The system can be installed inside a few days requiring minimal shutdown of production facilities. Its operation is simple and non-intrusive on the normal control of the electrolyser process. 

A modular electrolyser contains a number of discreet modules consisting of anode, membrane and cathode. These sealed modules can be individually removed from the electrolyser without the other modules being affected. The key to this type of design is to ensure a good electrical contact between adjacent modules. 

The core of the electrolyser is the cell block, which is made up of a large number of usually bipolar cells in a modular structure.8 Typical sizes of a cell block range from 1 to 800Nm3/h. (Most electrolysers sold today to laboratories, the semiconductor industry, etc., have a capacity less than 60 Nm3/h.) The biggest capacities realised are about 150 MW. An alkali solution, usually 20% to 40% potassium hydroxide (KOH), is used as the electrolyte that flows between the electrodes. In alkaline solutions, the electrodes must be resistant to corrosion, have good electronic... 

Since PV electrolysis plants are modular in design, it is possible to couple the expansion of PV electrolysis plants to growth in the FCV market. The creation of a H2 production and distribution system is contingent on the development of a working partnership between PV, electrolyser, automobile, pipeline, metal mining and retail fuel companies. The capital investments required for the construction of a PV electrolytic H2 production and distribution system is comparable to the capital investments in the construction of the cable and satellite infrastructure for the information technology industries in the latter part of the 20th century. 

Fig. 5.3 Small modular cells for specialized water electrolysis, (a) The El MiniCell a lightweight, prototype, filterpress design, which provides an alternative supply of H2 and O2 to bottled gases, (b) The EI-003 low-inventory cell for electrolysis of heavy and tritium-containing water (developed by Atomic Energy of Canada Ltd and Ontario Hydro). The nominal design is based upon 3 dm electrolyte per kiloamp of current. Construction involves a high-integrity design in order to contain the expensive and radioactive water. (Courtesy Electrolyser, Inc.)...

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