会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 25. 发明授权
    • Manufacture of high purity nitric oxide
    • 高纯氮氧化物的制造
    • US3663167A
    • 1972-05-16
    • US3663167D
    • 1970-09-21
    • HERCULES INC
    • VRY FRANK E DE
    • C01B21/26
    • C01B21/26B01J2219/00078B01J2219/00094B01J2219/00159B01J2219/00162B01J2219/00182C01B21/262
    • Process, integrated with ammonia air oxidation, for the manufacture of nitric oxide of at least 99 percent purity comprising the steps of (1) effecting the ammonia oxidation, (2) maintaining maximum NO content in the oxidation effluent, and then contacting the effluent with nitric acid to convert the NO to NO2, (3) cooling the NO2 containing gas product to condense the NO2 therefrom as liquid N2O4, (4) passing the liquid N2O4 into a packed converter tower and therein at least partially vaporizing the liquid; passing resulting vaporization product upwardly through the tower packing and passing water or weak nitric acid into the tower and downwardly through the packing in countercurrent flow reaction contact with the vaporization product, and then into the zone of said vaporization and reaction contact with any unvaporized liquid, and vaporization product to convert substantially all of the initially added liquid dinitrogen tetroxide to nitric oxide gas product containing minor contaminant amounts of NO2, HNO3 and water, (5) water-scrubbing the NO2 and HNO3 contaminants from the NO gas product to form resulting water-wet NO gas product containing, on an anhydrous basis, at least 99 percent NO, and (6) dehydrating the water-wet NO gas product to form said NO of at least 99 weight percent purity. Strong nitric acid is formed in the converter tower as by-product.
    • 与氨空气氧化相结合的方法,用于制造纯度至少为99%的一氧化氮,包括以下步骤:(1)进行氨氧化,(2)保持氧化流出物中的最大NO含量,然后使流出物与 硝酸将NO转化为NO2,(3)冷却含NO 2气体产物以将NO 2作为液体N2O4冷凝,(4)将液体N2O4通入填料转炉塔并在其中至少部分蒸发液体; 使所产生的蒸发产物向上通过塔填料并将水或弱硝酸通入塔中,并向下通过填料与逆流反应接触蒸发产物,然后进入与任何未蒸发的液体的蒸发和反应接触的区域, 和蒸发产物 - 将基本上所有初始添加的液体四氧化二氮转化成含有少量NO 2,HNO 3和水的少量污染物的一氧化氮气体产物,(5)从NO气体产物中水洗涤NO 2和HNO 3污染物以形成 水无水气体产物,其以无水方式含有至少99%的NO,和(6)使水湿NO气体产物脱水以形成至少99重量%纯度的所述NO。 在转炉塔中形成强硝酸作为副产物。