壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)罐(guan)是(shi)一種能夠承受壓力(li)(li)的密閉容(rong)器(qi)(qi)(qi)(qi)都(dou)屬于壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)設備。壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)的用途比較廣泛，它在工(gong)(gong)業、民用、等(deng)許(xu)多(duo)部門以及科學(xue)研究的許(xu)多(duo)領域(yu)都(dou)具有(you)重要(yao)的地位和作用。其中(zhong)以在化(hua)學(xue)工(gong)(gong)業與石(shi)油(you)化(hua)學(xue)工(gong)(gong)業中(zhong)用多(duo)，僅在石(shi)油(you)化(hua)學(xue)工(gong)(gong)業中(zhong)應(ying)用的壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)就占全(quan)部壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)總數的50 %左右。壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)在化(hua)工(gong)(gong)與石(shi)油(you)化(hua)工(gong)(gong)領城,主要(yao)用于傳(chuan)熱、傳(chuan)質(zhi)、反(fan)應(ying)等(deng)工(gong)(gong)藝(yi)過(guo)程(cheng)，以及貯(zhu)存(cun)、運輸有(you)壓力(li)(li)的氣(qi)體或液化(hua)氣(qi)體;在其他工(gong)(gong)業與民用領域(yu)亦有(you)廣泛的應(ying)用，如空氣(qi)壓縮(suo)(suo)機(ji)。各類(lei)專(zhuan)用壓縮(suo)(suo)機(ji)及制(zhi)冷壓縮(suo)(suo)機(ji)的輔機(ji)(冷卻器(qi)(qi)(qi)(qi)、緩沖(chong)器(qi)(qi)(qi)(qi)、油(you)水分(fen)離器(qi)(qi)(qi)(qi)、貯(zhu)氣(qi)罐(guan)、蒸發器(qi)(qi)(qi)(qi)、液體冷陳劑貯(zhu)雄等(deng))均(jun)屬壓力(li)(li)容(rong)器(qi)(qi)(qi)(qi)。