Method for performing heat consuming processes
European Patent Office Patent
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Abstract
The method for performing endothermic process comprises heating process streams using heat in a endothermic process or electric current, and heating and oxidizing radiation tubes in a reaction zone in a high-temperature process. An annual average total energy required for the endothermic process originates from different energy sources. One of the energy sources is an electrical energy source. A power of electrical energy source varies 0-100% of the required total power. Three different energy modes individually provide the total required power for the endothermic process. The method for performing endothermic process comprises heating process streams using heat in a endothermic process or electric current, and heating and oxidizing radiation tubes in a reaction zone in a high-temperature process. An annual average total energy required for the endothermic process originates from different energy sources. One of the energy sources is an electrical energy source. A power of electrical energy source varies 0-100% of the required total power. Three different energy modes individually provide the total required power for the endothermic process, and include exclusively electrical energy, a mixture of electrical energy and additional non-energy source and exclusively non-electrical energy. A transition time in which the change from one energy mode to another energy mode is completed is more than 60 seconds. Efficiency of the electric power source is greater than 90%. The electrical energy (75%) is provided by surplus power and/or peak power. An average time (10%) required for the heat consuming process energy is drawn from the electrical power sources with varying power. Energy consumption of the high-temperature process is greater than 0.5 MW/m 3> in a reaction zone. The non-electrical energy source is thermal energy generated by an oxidation process.
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