| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-pressure steam heating apparatus allowing reduction of the amount of cooling water.SOLUTION: A steam supply pipe 8 for heating is connected to a jacket portion 2 of a reactor 1. A combination vacuum pump 4 is connected to the lower part of the jacket portion 2. The combination vacuum pump 4 is composed of a circulation pump 14, an ejector 10 and a circulation water tank 13. A heat pump 3 is composed of a compressor 5, a condenser 6, a steam trap 9 and an evaporator 13. Because the circulation water in the circulation water tank 13 of the combination vacuum pump 4 is cooled in an evaporation pipe 21 of the heat pump 3, the combination vacuum pump 4 does not require replenishment of fresh cooling water, allowing the reduction of the amount of cooling water used in the combination vacuum pump 4. |
