Desalting treatment process for heat supply return water of thermal power heat supply unit below 200MW level

• Main Authors: WANG RENLEI, JIN YINJIA, HENG SHIQUAN, WANG FENGJI, LI JING, TANG GUORUI, YOU LIANGZHOU, YU JIANG
• Format: Patent
• Language: Chinese; English
• Published: 18.06.2021
• Subjects: BLASTING; CHEMISTRY; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WEAPONS

The invention discloses a desalting treatment process for heat supply return water of a thermal power supply unit below 200MW, and is suitable for treating the heat supply return water of a thermal power plant below 200MW. A set of'heat exchanger + high-speed mixed bed 'system is arranged, the heat supply return water and heat supply network replenished water are subjected to heat exchange, and the heat supply return water is cooled and then conveyed to the high-speed mixed bed for desalting treatment; the salt content and the conductivity of the heat supply return water are effectively reduced, and the specific conductivity meter and the hydrogen conductivity meter are arranged at the outlet of the system, so that the water quality of the heat supply return water can be better monitored, the water vapor quality and safe operation of the unit are ensured, and the salt accumulation of a steam turbine is reduced. 本发明公开了一种200MW级以下火电供热机组供热回水除盐处理工艺，适用于200MW级以下火电厂供热回水的处理，设置了一套"换热器+高速混床"系统，将供热回水和热网补水进行换热，将供热回水降温后输送至