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Project name:

Modular system for the production and storage of hydrogen and the generation of electricity using renewables and circular economy

Status: Idea
Creation date: 11-05-2023

Project objectives:

Short summary The planned main result is the development of a prototype of a technological installation/system for the preparation of water for the electrolyser for the production of hydrogen in a closed loop. An additional product will be a laboratory, scalable hydrogen installation consisting of: electrolyser, hydrogen compressor, hydrogen storage, fuel cell generating electricity. The installation will be equipped with a hydrogen energy installation security subsystem.

Full description Polish Institute for nearly 30 years already has been specialising in building up innovation performance in the areas of machine construction and maintenance, and technical and environmental safety. The Institute is looking for partners for research in the field of hydrogen storage. A classic hydrogen power plant produces hydrogen in an electrolyzer. The electrolyzer is powered by electricity, which may come from renewable sources, and water with appropriate physicochemical parameters. The hydrogen is then compressed and stored in a pressure vessel. From the tank, this gas is supplied to the fuel cell, where the chemical energy of the gas is converted into electricity. The by-product is again water, which will be used to recharge the electrolyzer in the water preparation system. The aim of the project is to develop a water preparation system of appropriate quality intended to power the electrolyzer and the hydrogen storage system. The primary source (input of the system) will be water recovered in a hydrogen fuel cell, but it can also be tap water or wastewater of various compositions, especially in the case of hydrogen storage installations without generating electricity. For the purpose of verifying the water treatment system, the project plans to build a hydrogen installation on a laboratory scale. It was assumed that the conductivity of the obtained water would be below 0.1 μS/cm, the system efficiency at above 15 dm3/h. The electric power of the fuel cell will be min. 300 W, and the volume of the hydrogen storage - min. 50 l. In the object model of the water preparation system to supply the electrolyzer, the technical parameters of the modules allowing to obtain the required quality and quantity of water will be described. It is assumed that a multi-stage water purification system will be built, in which each module will be responsible for the removal of individual pollutants. A concept for the energy part of the laboratory hydrogen installation will be developed, including the following systems: receiving hydrogen from the electrolyzer, compressing hydrogen, storing hydrogen, generating electricity with the use of a fuel cell. The parameters of individual systems will be specified, taking into account the scalability of the solutions adopted. In the case of a fuel cell, the availability of the produced water for sampling for quality tests and the availability of the water preparation system for the electrolyzer will be ensured.

Advantages and innovations The effects of the project are reality-changing technologies that ensure further intensive growth of the economy. The implementation of the project directly supports activities in the field of sustainable economy and energy through the development of alternative fuel technology - hydrogen fuel. The problem is the quality of the water supplied to the electrolyzer. The catalog requirements of these devices indicate the preferred water conductivity values below 0.1 μS/cm. Meanwhile, commercial, laboratory water purification systems (deionizers) allow to obtain of the conductivity of purified water in the range of 0.1 - 5, μS/cm. Therefore, there is a need to develop a system for preparing water of appropriate quality to feed the electrolyzer. It is proposed to develop a water preparation system implementing multi-stage purification - from a mechanical filter to remove suspended particles and a carbon filter to remove chlorine, through membrane nanofiltration to remove calcium, magnesium, and iron ions and reverse osmosis, to demineralization on mix-bed ion exchange beds to capture salts minerals left over from the reverse osmosis process. The problem of water quality to feed hydrolyzers will crystallize as hydrogen installations develop. The quality of the supplied water has a negative impact on the lifetime of the electrolyzer and the quality of the hydrogen produced. In turn, low-quality hydrogen negatively affects the operation of the fuel cell. In the proposed solution, the primary source (system input) will be water recovered in a hydrogen fuel cell, but it can also be tap water or sewage of various compositions, especially in the case of hydrogen storage installations without electricity generation. Carrying out a risk analysis for the planned hydrogen technological installation will make it possible to identify potential safety and health hazards and eliminate them in the future, as well as verify the installation based on applicable safety standards.

Technical Specification or Expertise Sought Knowledge and experience in subject of water preparation system implementing multi-stage purification
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