2018/05/31 15:49
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科捷通用气相/GC5890N气相色谱仪
型号: GC 5890N
产地: 江苏
品牌: 南京科捷
¥3万 - 5万
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方案详情:
空分塔的爆炸是空分生产中的最大威胁。空分塔中,可爆物质主要有:乙炔和其他碳氢化合物,以及随加工空气带入塔内的润滑油及润滑油的轻馏份。在上述危险杂质中,乙炔是形成爆炸的最主要的根源。这是因为乙炔在液氧中的溶解度极低,约为5.2cm 3/1液氧,过剩的乙炔就会以白色固态微粒悬浮在液氧中。而乙炔又是不饱和的碳氢化合物,具有很高的化学活性,性质极不稳定。固态乙炔加液氧的爆炸敏感性极高,它是造成空分塔爆炸的最危险的物质。液氧在主冷凝蒸发器中蒸发时,随气氧带走的乙炔量仅为液氧中乙炔总含量的1/24左右。这样,随着液氧的蒸发,液氧中的乙炔浓度就不断增高,当乙炔超过其溶解度时,就以固态析出,在液氧中,固态乙炔具有爆炸性。
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