Analysis of Technologies for Hydrogen Consumption, Transition and Storage at Operating Thermal Power Plants

Abstract

The paper analyses operating and developing technologies for hydrogen implementation, transition, and storage at operating thermal power plants (TPPs) to make recommendations for realization of perspective projects for evaluation of the use of hydrogen as a fuel. Over the medium-term horizon of the next decade, it is suggested that using the technology of burning a mixture of hydrogen and natural gas in gas turbines and gas-and-oil-fired boilers in volume fractions of 20% and 80%, respectively, be implemented at operating gas fired TPPs. We consider the construction of the liquefied hydrogen and natural gas storage warehouses for the required calculated quantities of the gas mixture as a reserve energy fuel for operating the TPPs. We consider the possibility of the reserve liquid fuel system being replaced by the technology involving storage of liquefied hydrogen in combination with natural gas. An economic assessment of the storing cost of reserve fuel on the TPP site is given. The paper suggests that the methane-hydrogen mixture be supplied to the TPP site by two independent gas pipelines for the possibility of using the mixture as the main fuel and to exclude fuel storage at the plant.

Use of Heat Pumps in the Hydrogen Production Cycle at Thermal Power Plants

“…For the purpose of transition to low-carbon energy, it is advisable to consider transferring thermal power plants to the combustion of hydrogen and natural gas, with the creation of a gas transmission system of hydrogen and natural gas, in shares of 20% and 80%, respectively [44]. The proposed new methodology will require further elaboration during the modernization of thermal schemes for the use of the obtained hydrogen.…”

Efficiency of Using Heat Pumps in a Hydrogen Production Unit at Steam-Powered Thermal Power Plants

“…As already mentioned, during the gasification process, syngas and ash are formed from RDF. The mass content of ash is assumed to be 10% [46]. In accordance with the law of conservation of mass, we can obtain a formula for determining the mass flow rate of the generated synthesis gas:…”

“…In Formula (4), the coefficient of 0.642 is obtained based on the material balance of the chemical reaction of carbon dioxide oxidation, considering the molar masses of individual components [46].…”

“…Serious scientific studies in this area are also carried out in Russia. The analysis of the possibility of implementing individual stages of the technological chains of hydrogen energy is carried out [24][25][26]. A few scientific articles develop the technical and economic basis to produce hydrogen by various methods (for example, electrolysis [27], methane pyrolysis [28], and steam reforming of methane [29]).…”