高效节水节能的内循环流态化水冷器技术

Technique of Water Cooling Condenser with Internal Circulating Fluidization-bed for Efficient Saving of Water and Electricity

内循环流态化换热器的应用效益相当高,但是还不够完善,较长时期运行后可能发生流态化底室筛板部分筛孔堵塞和出口室沙子跑失的问题。文中重点研讨了采用泡罩板取代筛板解决堵塞问题后出现的均匀性问题,多方案优化的结果是采用较大直径的泡罩,并且加装一块大孔均布板,以满足稳定运行的要求。研制成功的传热管管口档罩,不仅具有防止粒子跑失的功能,而且还具有一定的流速调匀作用和防止低流速管创新粒子倒流的稳定功能。

The number of vertical water-cooling condensers is the largest in refrigeration systems. The water fouling in tubes has serious effect on equipment operation efficiency and result. The water-cooling condenser with internal circulating fluidization bed can not only automatically prevent or well remove fouling on line but also enhance heat transfer greatly. The average effect are is 64%. The comprehensive effect are high including saving water and electricity. The reliability is also great during long operation. The period is very short (only several months) to get back the cost of technical reform. The new structure researched in this paper can meet the demand of high reliability during long operation. The sieve plate is replaced with the bubble plate and distribution plate of large holes in the bottom chamber to avoid the blockage problem completely. The flow velocity in each tube is well distrbuted to keep operation stable. The sieve cover is developed and installed over tubes outlet so that the particles can be automatically kept from flowing away.