| 摘要 |
PURPOSE:To prevent thermal decomposition of an intermediate heat medium and a low boiling point medium, by providing a direct-contact type heat exchanger, a suspended-matter removing means and an adsorption tower in a system for purifying the intermediate medium. CONSTITUTION:A power plant utilizing a low-melting medium is composed of an evaporator 1, a turbine 2, a generator 3, a condenser 4, etc. Further, a direct- contact type heat exchanger 10, a suspended-matter removing means 12 and an adsorption tower 11 are provided in a purifying system 105 for an intermediate heat medium 103. Suspended matter such as particles of rust having large sizes can be removed by the suspended-matter removing means 12 while thermally decomposed substances can be removed in the adsorption tower 11. Further, since the temperature and the viscosity of the intermediate heat medium 103 are both lowered by bringing the intermediate heat medium 103 and a low-temperature, low-boiling point medium liquid 102 into direct contact with each other in the direct-contact type heat exchanger 10, the adsorbing performance can be improved. Thus, it is enabled to prevent thermal decomposition of the intermediate heat medium and the low-boiling point medium. |
