阻火器原理及類型,清理頻率

1、CSPC FA (Flame Arrester) inspection procedure introduceContent of instruction Principle FA type (Photo&Drawing) Failures model Inspection check list Cleaning methord Inspection record Inspection intervalPrinciplePiping FA 管道阻火器適用于加熱爐、裂解爐、燃?xì)忮仩t等，因?yàn)檫@些爐子都用可燃?xì)怏w作燃料，由于操作上的失誤或泄漏，易于造成輸氣管道回火而引起工藝裝置爆炸的危險(xiǎn)。為

2、防止回火爆炸應(yīng)安裝加熱爐阻火器。它安裝在燃?xì)庵鞴芎陀蜌廨斔凸芫€上，其回火距離（火源至阻火器距離）不大于10m。 加熱爐阻火器應(yīng)用于管道上，因此亦屬于管道阻火器，它有別于儲(chǔ)罐阻火器Difference 管道阻火器 1.氣體為流動(dòng)狀態(tài) 2.回火距離可超過10米以上 3.阻火器能承受2.4Mpa壓力 4.能阻止火焰?zhèn)鞑ニ俣冗_(dá)幾百米或上千米 儲(chǔ)罐阻火器儲(chǔ)罐阻火器儲(chǔ)罐阻火器儲(chǔ)罐阻火器 1.氣體為靜止?fàn)顟B(tài) 2.回火距離不超過1.5m 3.阻火器只能承受0.9Mpa壓力 4.只能阻火大于45m/s的火焰通過FA Photo and TypeTank Dry FA 石油及其下游產(chǎn)品產(chǎn)品儲(chǔ)罐上的阻火器 重量沉,

3、位置較高結(jié)構(gòu)復(fù)雜,需大型吊車協(xié)助 內(nèi)件可單獨(dú)更換 易清洗Piping Dry FA in Normal size 管道或地罐揮發(fā)氣的阻火器 拆卸方便,結(jié)構(gòu)簡單 必要時(shí)需更換內(nèi)件 阻火片易變形 不易清洗Piping Dry FA in Small size 拆裝迅速,結(jié)構(gòu)簡單 必要時(shí)需更換內(nèi)件 阻火片易變形 不易清洗Piping Dry FA in Packing way 拆裝迅速,結(jié)構(gòu)簡單 必要時(shí)需更換內(nèi)件 不易清洗Piping Dry FA in Packing way 管道或水下?lián)]發(fā)氣的管線上的阻火器 拆裝迅速,結(jié)構(gòu)簡單 必要時(shí)需更換內(nèi)件 不易清洗Failure model 堵塞失效(小孔

4、內(nèi)有灰塵,聚合物,工藝顆粒,鳥巢) 阻火片變形 阻火片腐蝕 防爆殼體腐蝕 裝配不當(dāng)?shù)氖?安裝方向不對(duì)Hydro & Packing FAfailure model Hydro FA 封液液位過低 封液污染 封液起泡 殼體腐蝕 分配器堵塞 Packing FA 填料磨損 內(nèi)有聚合物 內(nèi)部間隙堵塞 分配器堵塞Inspection check list Plate type FA1. Visual inspection for in&outside shell2. Inner elements physical damage , plugging ,corrosion3. Shel

5、l pressure testing (Optional)4. Gas flow direction checkingHydro&Packing type FA1. Proper liquid level,2. Seal fluid contaminant3. Foam4. Vessel corrosion5. Distribution pluggage6. Packing attrition,corrosion, fouling or plugging7. Distributor conditionCleaning Methord Steam blowing Steam mix DM

6、 water blowing Solvents Compressed air Ultrasonic Detergent Un-cleaningable or damaged element must replaceInspection RecordNeed bellowing informationChecking result1.Checking scope2.Checking dateInspection interval Many companies perform inspection and maintenance at least once annually unless operating experience indicated that the inspection period should be changed. Instruction book for all type of FA have recommended inspection period.LOP