Condensate fine treatment high-temperature running system having heat supply and pure condensation modes

Abstract

The invention relates to transformation of a No. 2 unit condensate fine treatment system in a power plant, in particular to a condensate fine treatment high-temperature running system having heat supply and pure condensation modes. Three butyl rubber (resistant to the temperature of 100-120 DEG C)-lined high-speed mixing beds are arranged at the positions of three original high-speed mixing beds in a No. 2 unit on the basis of current equipment; the original three natural rubber-lined high-speed mixing beds are changed into resin storage tanks which are arranged on the zero expansion ends of a No. 2 unit room and moved to the southern sides of the original high-speed mixing beds, and a resin conveying pipeline, a flushing water pipeline and a compressed air pipeline are connected between the resin storage tank and the three newly-added high-speed mixing bed equipment, so that switching and conveying of home-made resin and imported resin under heat supply and pure condensation working conditions are facilitated. Thus, normal work of condensate fine treatment equipment of over high temperature during back-pressure running of the No. 2 unit during a heat supply period is ensured; meanwhile, normal running and regeneration of a condensate fine treatment system of a No. 1 unit is not influenced.

Description

technical field [0001] The invention relates to the transformation of the condensate polishing system of No. 2 unit in the prior art power plant, in particular, it relates to a condensate polishing high-temperature operating system with dual modes of heating and pure condensation. Background technique [0002] In the prior art, during the heat supply period of the condenser, that is, the high back pressure condition, the condensate temperature is 80-85°C, and the condensate polishing equipment of Unit 2 is lined with natural rubber, and the natural rubber can withstand long-term operation. The maximum temperature does not exceed 60°C, which is dangerous. [0003] In the prior art, the tolerance temperature of Chinese medium-pressure or imported medium-pressure resins, qualified cation resins basically do not decompose at 80°C, and anion resins begin to decompose at 50°C~60°C, and the volume exchange capacity decreases. When the exchange capacity drops by about 10%, the wate...

AI Technical Summary

Problems solved by technology

However, when the resin is running during heating at a condensing water temperature of 80-85°C, the degradation of the anion resin is inevitable, and the replacement of the resin will result in expensive operating costs.

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