热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2009年
7期
27-31,35
,共6页
生物质锅炉%过热器%高温腐蚀%HCl%TP347H
生物質鍋爐%過熱器%高溫腐蝕%HCl%TP347H
생물질과로%과열기%고온부식%HCl%TP347H
biomass-burned boiler%superheater%high-temperature corrosion%HCl%TP347 H steel
模拟生物质锅炉过热器区的气相条件,在500～600℃范围内对奥氏体不锈钢TP347H进行了腐蚀试验.通过试样的增重量,得出了腐蚀动力学曲线.利用配有能谱分析仪的扫描电镜和X射线衍射仪对试样腐蚀后的形貌结构、元素含量和腐蚀产物的组成成分进行了分析.试验表明,TP347H的耐腐蚀性很好,但是对反应温度和气相中HCI的浓度非常敏感,并且随着反应温度和HCl浓度的增加,TP347H的抗腐蚀性能逐渐降低.
模擬生物質鍋爐過熱器區的氣相條件,在500～600℃範圍內對奧氏體不鏽鋼TP347H進行瞭腐蝕試驗.通過試樣的增重量,得齣瞭腐蝕動力學麯線.利用配有能譜分析儀的掃描電鏡和X射線衍射儀對試樣腐蝕後的形貌結構、元素含量和腐蝕產物的組成成分進行瞭分析.試驗錶明,TP347H的耐腐蝕性很好,但是對反應溫度和氣相中HCI的濃度非常敏感,併且隨著反應溫度和HCl濃度的增加,TP347H的抗腐蝕性能逐漸降低.
모의생물질과로과열기구적기상조건,재500～600℃범위내대오씨체불수강TP347H진행료부식시험.통과시양적증중량,득출료부식동역학곡선.이용배유능보분석의적소묘전경화X사선연사의대시양부식후적형모결구、원소함량화부식산물적조성성분진행료분석.시험표명,TP347H적내부식성흔호,단시대반응온도화기상중HCI적농도비상민감,병차수착반응온도화HCl농도적증가,TP347H적항부식성능축점강저.
A corrosion test of austenitic stainless steel TP347H has been carried out in the temperature range of 500～600 ℃, simulating the atmospheric condition in superheater's zone of biomass-burned boiler. Through mass gain of the specimans,the corrosive dynamic curves have been obtained. The ap-pearance and structure,the element's content,and the composition of corrosion products of specimans after corrosion have been analysed by using scanning electron microscope (SEM) coordinated with en-ergy dispersive spectrometer (EDS) and X-ray diffraction (XRD) meter. Results of test show that the corrosion-resistant behavior of TP347H steel is very good, hut it is extremly sensitive to the reaction temperature and concentration of HCI in the gas-phase. The anti-corrosion performance of said steel decreases with increasing of the reaction temperature and concentration of HCl.
