首页>
外国专利>
Concentrated nitric acid, chlorine and nitrates from - nitrogen peroxide, oxygen, water and chlorides in
Concentrated nitric acid, chlorine and nitrates from - nitrogen peroxide, oxygen, water and chlorides in
展开▼
机译:来自-过氧化氮,氧气,水和氯化物中的浓硝酸,氯和硝酸盐
展开▼
页面导航
摘要
著录项
相似文献
摘要
Conc. HNO3 is produced by reacting "nitrogen peroxide" (I), water and (gas contg.) O2 in presence of aqs. HNO3 soln. contg. (I) and nitrate(s) of group Ia metal with at wt. at least as high as that of K, which shifts azeotropic point upwards for HNO3, 70-100% HNO3 can thus be obtained directly from I, O2 and H2O at much lower temp. and pressure than usual. Reaction is carried out between room temp. and b.pt. pref. 30-70 degrees C and 1-100, pref. 1-10 atm., using alkali nitrate concn. is not 1/2 satn. value and 5-30% I. Conc. acid produced can be reacted with KCl, NaCl, HCl or NOCl, hence used in complete oxidation of HCl to Cl2 using air as oxidant, oxidation of NOCl to Cl2 and NO2 and prodn. of separate nitrates from mixed NaCl-KCl. Process is simple and expensive corrosion-proof equipment can be eliminated in some stages. (I) consists of NO2 and/or N2O4 and can also contain NO and N2O3.
展开▼
机译:浓缩HNO3是通过使“过氧化氮”(I),水和(含气)O2在水溶液中反应生成的。 HNO3溶液。续(I)和Ia族金属的硝酸盐,其重量百分比为至少与K一样高(HNO3的共沸点向上移动),因此可以在更低的温度下直接从I,O2和H2O中获得70-100%的HNO3。和压力比平常大。反应在室温之间进行。和b.pt.偏好30-70摄氏度和1-100,优选。 1-10 atm。,使用碱式硝酸盐溶液。不大于1/2饱和度。值和5-30%I。产生的酸可与KCl,NaCl,HCl或NOCl反应,因此可使用空气作为氧化剂,将HCl完全氧化为Cl2,将NOCl氧化为Cl2和NO2并生成。从混合的NaCl-KCl中分离出硝酸盐工艺简单,可以在某些阶段取消昂贵的防腐蚀设备。 (I)由NO 2和/或N 2 O 4组成,并且还可以包含NO和N 2 O 3。
展开▼