2020년 3월 15일

Fuel Cell Plant Project

  1. Why should we use seawater electrolysis equipment for fuel cell power generation?
Sea water electrolyzer is used for producing the coolant of the nuclear reactor  or thermal Plant.
  • When sterilizing coolant in nuclear and thermal power plant or as byproduct reaction in the Chlor-Alkali chemical plant, there is a reaction which produces sterilization solution of hypo-chlorous acid (HClO+H2O: Strongly acid electrolysis water). In this reaction, sodium chloride (NaCl) and water (H2O) are compounded together, generating sodium hypochlorite (NaOCl) and byproduct hydrogen (H2). We use this hydrogen as a fuel in fuel cell Power Plant and the remaining hydrogen is recycled to produce high value added chemical product.

2. Background : Key principles of technology


Chemical reactions in the Sea Water Electrolyzer
  • The electricity generated in fuel cell Power Plant can be sold in a price of more than three times (0.2$/kWh) higher than normal industrial electric charge (0.07$/kWh) under RPS (Renewable Portfolio Standard) Policy to Korea Electric Power Corporation (KEPCO) or Korea Power Exchange (KPX). In addition, the left hydrogen can be stored  in the hydrogen station and sold after refining process or used to produce high value added chemical products , i.e. caustic soda, ammonia, urea and PVC.
Available fuelcell power generation for a single nuclear power plant with 10 module of sea water electrolyzer

3. Benefits and Economic feasiblity

  • Installation operation of fuel cell power plants and hydrogen charging stations in nuclear power plants and thermal power plants => Provides national wide charging station for fuel cell vehicles when traveling long distances between cities
  • Securing large-capacity hydrogen purification / storage / generation / operation technology for MW-class seawater electrolytic fuel cell power generation linked with other renewable energy (i.e. offshore wind power) => Accelerating the realization of hydrogen economy
  • Possible to develop various linked projects such as Hydrogen charging station, EV charging station, CCS technology and microgrid.

  • Early commercialization is possible by utilizing the existing infrastructure
  • Use of seawater electrolysis equipment for nuclear power plants / thermal power generation => minimum fuel price, initial investment cost secured

Economic feasibility of 2 MW sea water electrolysis fuelcell

• Net Present Value of this business using DCF method is NPV(3 years)~ 0.8 M$, NPV(5 years)~ 3.6 M$,   NPV(20 years)~11.3 M$.

• Initial investment cost is predicted 7M$ [stack (4 M$)  + BOP(3 M$) cost].

•Annual electricity sales is 3.5 M$ on this business. It is possible to reach a break-even point in 4 or 5 years after the construction

4. Core competence of XFC

  • We have original patents for this technology of fuelcell power generation using hydrogen form sea water electrolyzer.
  • FUEL CELL SYSTEM USING HYDROGEN FROM ELECTROLYZER OF SEA WATER: Issued KR patent # 10-1215337 et al. https://patents.google.com/patent/KR20110136196A/en