Abstract:

A new device which realizes the simultaneous softening and deoxidizing of the make-up water for boilers has been developed. Hence the scaling is inhibited and corrosion is lessened. Through pilot tests, the dosage of Na2₂SO₃, water flow rate, fluent water hardness and catalyst dosage have been analyzed. The best operating parameters are determined as follows: when water hardness≤6 mmol/L, no catalyst is needed, the smallest dosage ratio k min of b>2SO₃ is 1.3, the best velocity is 25-30 m/h;and when water hardness>6 mmol/L, extra catalyst CoCl₂1mg/L is needed. The hardness of effluent water and dissolved oxygen can both meet the water quality requirements of small-and medium-scaled boilers.

Key words: simultaneous softening and deoxidizing, boiler feedwater, corrosion and scale inhibition

摘要：

研制成功一种用于锅炉给水处理的新设备,该设备具有同步软化和除氧的功能。中试研究了Na2₂SO₃用量、运行流速、进水硬度、催化剂用量等因素对其运行性能的影响,确定了最佳运行参数:当进水总硬度≤6 mmol/L时,无需投加催化剂,Na2₂SO₃最小投加比kmin=1.3,控制流速25～30 m/h；当进水总硬度>；6 mmol/L时,需额外投加催化剂CoCl₂ 1 mg/L。经其处理后的出水硬度和溶解氧均可满足中小锅炉给水水质要求。

关键词: 同步软化除氧, 锅炉给水, 缓蚀阻垢

CLC Number: 

• TK223.522