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產品中心您的位置:網站首頁 > 產品中心 > 氣體分析儀 > 紅外氣體分析儀 > PUE-400耐高溫高濕紅外氣體檢測(適應工業工況)

耐高溫高濕紅外氣體檢測(適應工業工況)

更新時間:2025-09-01

訪問量:35

廠商性質:生產廠家

產品型號:PUE-400

簡要描述:
耐高溫高濕紅外氣體檢測(適應工業工況):在火電脫硫塔出口、化工反應釜尾氣、垃圾焚燒脫酸系統等工業場景中,高溫高濕環境(溫度可達 300℃以上,濕度常處于 95% RH 以上飽和狀態)一直是氣體監測的技術難題。傳統紅外氣體分析儀因光學元件結霧、采樣管路腐蝕、測量信號漂移等問題,難以滿足長期穩定監測需求。本文介紹的耐高溫高濕紅外氣體檢測設備,可測量CO、CO2、CH4、SO2、NO、SF6、CnHm。
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應用領域環保,化工,石油,能源,電子/電池

耐高溫高濕紅外氣體檢測(適應工業工況):陜西博純科技有限公司長期致力于廢水治理、廢氣及煙氣脫硫除塵處理、環保產品、數據采集與分析的生產、銷售、環保設施的運營、氣體分析儀器等領域。

一、技術原理:NDIR 技術的工業級升級

該設備核心采用非分散紅外吸收光譜法(NDIR),其工作原理基于氣體分子對特定波長紅外光的選擇性吸收特性:當紅外光源發出的多波長光束穿過被測氣體時,目標氣體分子(如 CO、CO?、SO?等)會吸收與其分子振動頻率匹配的紅外光,通過測量特定波長光強的衰減程度,即可依據朗伯 - 比爾定律計算氣體濃度。

針對工業高溫高濕環境,設備在基礎原理上實現三重技術升級:

雙光束差分技術:采用參比光路與測量光路同步監測,通過實時比對消除水汽散射、粉塵污染導致的光強衰減干擾,較傳統單光束設計測量穩定性提升 40%;

動態濕度補償算法:內置高精度溫濕度傳感器(測量范圍 0-100% RH,精度 ±1.0% FS),通過預設的水汽吸收系數矩陣實時修正測量值,解決高濕環境下的交叉干擾問題;

寬光譜光源與濾波組合:選用特種紅外光源(工作溫度可達 150℃)配合窄帶干涉濾光片,精準匹配目標氣體特征吸收峰(如 CO?在 4.26μm、CO 在 4.65μm),避免水汽在 2.5-3μm 波段的強吸收干擾。

核心設計:工況的防護體系

設備的耐高溫高濕性能源于多維度的工業級設計,從采樣到分析構建全鏈條防護:

1. 防腐耐磨采樣系統

探頭材質:采用哈氏合金 C276 與 PTFE 復合結構,哈氏合金耐受 98% 濃硫酸的腐蝕,PTFE 涂層通過分子級排斥作用減少極性分子吸附,在丙烯腈等強腐蝕性氣體監測中≤0.02%;

伴熱保溫設計:采樣探頭與傳輸管線集成 200-220℃恒溫伴熱裝置,確保煙氣在傳輸過程中始終高于露點溫度 10℃以上,避免冷凝結露造成的組分損失;

防堵預處理:內置旋風式分離器與 0.1μm 高溫濾芯,配合 0.5-0.7MPa 壓縮空氣自動反吹(每 4-8 小時一次),可處理粉塵濃度≤100g/m3 的煙氣環境,維護周期延長至 3 個月以上。

2. 高溫適應性光學系統

光學元件耐高溫設計:紅外光源與檢測器采用陶瓷封裝,工作溫度范圍 - 40~80℃,光學窗口選用藍寶石材質(耐溫 300℃以上),避免高溫變形導致的光路偏移;

壓力平衡結構:分析氣室采用金屬波紋管密封設計,可承受 - 10~10kPa 壓力波動,在鍋爐啟停等工況下保持測量穩定性;

快速響應溫控:內置 PID 溫控模塊,當環境溫度驟變時(如從 - 20℃升至 80℃),可在 5 分鐘內將光學系統溫度穩定在 ±0.5℃范圍內。

3. 防爆與安全設計

防爆等級認證:設備外殼采用隔爆結構,通過 Ex db ⅡC T6 Gb 氣體防爆與 Ex tb ⅢC T80℃ Db 粉塵防爆認證,適用于化工防爆區等危險環境;

本質安全電路:關鍵電路采用限流限壓設計,避免電火花產生,可在含有甲烷、丙烷等易燃易爆氣體的場景安全運行;

多重報警機制:具備超溫、超濕、光路故障等異常狀態監測,觸發時自動切斷采樣并啟動聲光報警。

性能優勢:工業場景的可靠性驗證

相較于普通紅外氣體分析儀,該設備在工況下展現出顯著優勢:

二、性能指標

工業級耐高溫高濕設備

普通紅外分析儀

工作環境溫度

-40~80℃(設備)/0~300℃(探頭)

0~50℃

工作濕度范圍

0~100% RH(非冷凝)

0~90% RH(非冷凝)

測量精度

≤±1% FS(標況下)

≤±2% FS(常溫常濕)

響應時間(T90)

≤10 秒

≤20 秒

維護周期

3~6 個月

1~2 個月

三、在實際應用中,這些優勢轉化為三大核心價值:

數據有效性提升:通過動態補償與抗干擾設計,在濕法脫硫后飽和濕煙氣中,SO?測量可控制在 ±3% 以內,滿足 HJ 76-2017 標準對數據有效性的要求;

運維成本降低:自動反吹、長壽命濾芯等設計使年維護頻次減少 60%,某鋼鐵廠應用案例顯示,年度維護成本較傳統設備降低約 120 萬元;

工藝適應性增強:寬溫域設計可覆蓋從垃圾焚燒急冷塔(200℃)到煤化工低溫分離器(-20℃)的全場景監測需求。

典型應用場景與監測價值

設備憑借強大的環境適應性,已廣泛應用于多個工業領域的關鍵監測點:

1. 火電行業濕法脫硫后監測

在脫硫塔出口(溫度 50-60℃,濕度≥95% RH)監測 SO?、CO?濃度,通過精準數據指導脫硫劑投放量,某 300MW 機組應用后,脫硫效率提升 2%,年減少石灰石消耗約 800 噸。同時監測逃逸氨與 CO 濃度,預防硫酸銨堵塞空預器及鍋爐不燃燒風險。

2. 化工反應釜尾氣分析

在精細化工間歇反應釜(溫度 80-150℃,含酸性水汽)中,實時監測丙烯腈、氯乙烯等揮發性有機物濃度,配合防爆設計確保生產安全。某染料廠應用后,產品色號穩定性從 85% 提升至 99%,批次報廢率顯著降低。

3. 垃圾焚燒脫酸系統監測

在半干法脫酸塔出口監測 HCl、SO?濃度(溫度 120-180℃),聯動控制石灰漿噴入量,使污染物排放濃度穩定控制在 50mg/m3 以下,同時通過 CO 濃度監測判斷燃燒充分性,輔助優化爐膛溫度。

4. 鋼鐵燒結煙氣監測

在燒結機頭煙氣(溫度 150-200℃,粉塵濃度高)中,同步監測 NO?、CO 和 O?濃度,為燒結機脫硝系統提供實時調控依據,某鋼鐵廠應用后 NO?排放濃度穩定在 100mg/m3 以下,達到超低排放標準。

技術參數與選型指南

四、核心技術參數

測量氣體:可同時監測 CO、CO?、SO?、NO 等多種氣體(最多支持 5 組分)

測量范圍:0-500/1000/5000ppm(可選,部分氣體支持 0-vol% 級)

環境適應性:溫度 - 40~80℃(主機),0~300℃(采樣探頭);濕度 0~100% RH(非冷凝)

輸出與通信:4-20mA 模擬量、RS485(Modbus-RTU)、以太網;支持 HJ 212 協議環保平臺上傳

認證標準:CCEP 中國環保產品認證、HJ 76-2017 合規、ATEX/IECEX 防爆認證 e

選型注意事項

工況匹配:根據煙氣溫度選擇對應探頭耐溫等級(常規 200℃/ 高溫 300℃),高粉塵場景需升級旋風分離器;

氣體組分:含腐蝕性氣體(如 HCl、HF)時必須選用哈氏合金探頭,避免 316L 不銹鋼材質;

安裝方式:高溫高濕場景優先選擇原位式安裝(減少樣氣傳輸損耗),防爆區域需確認設備防爆等級與現場危險區域劃分匹配;

校準需求:建議選擇具備自動校準功能的型號,支持零點 / 跨度自動校準,減少人工干預。

耐高溫高濕紅外氣體檢測(適應工業工況):我店專營煙氣CEMS在線監測,水質在線監測,VOCs在線監測,工業過程氣體分析,氨逃逸氣體在線分析,酸露點分析儀,原位式NOx/O2 氮氧化物檢測儀等其它氣體檢測儀器及其配件,數據采集與分析系統廠家直銷,歡迎致電詢價對比。

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