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近年来,在城市垃圾焚化厂里,去除排放出的氯化氢气体和改进从高温脏气中回收废热的技术已变得愈来愈重要。鉴于此,以研制出具有半干式除氯化氢功能的流化床热交换器为目的,进行了样机试验。试验结果如下:(1)双排1英寸管流化床热交换器的总压降小于350毫米水柱;(2)光管流化床的传热系数约为200千卡/米~2·时·℃;(3)如采用不锈钢螺旋鳍片管,其外壁传热系数高达500～600千卡/米~2·时·℃;(4)除氯化氢性能可与传统的湿洗法相匹敌,除氯化氢率达85～95%,氯化氢出口浓度可降至50ppm 以下。
In recent years, technologies for removing discharged hydrogen chloride gas and improving the recovery of waste heat from high-temperature dirty air have become increasingly important in municipal waste incineration plants. In view of this, a prototype test was carried out for the purpose of developing a fluidized bed heat exchanger having a semi-dry function of removing hydrogen chloride. The test results are as follows: (1) The total pressure drop of the double-row 1-inch tube fluidized bed heat exchanger is less than 350 mm H2O; (2) The heat transfer coefficient of the fluidized bed of the light tube is about 200 kcal / m 2 · ℃; (3) If the stainless steel spiral finned tube, the outer wall heat transfer coefficient as high as 500 to 600 kcal / m ~ 2 · ℃ · ℃; (4) In addition to the performance of hydrogen chloride can be compared with the traditional wet- Hydrogen chloride rate of 85 to 95%, hydrogen chloride outlet concentration can be reduced to below 50ppm.