| 摘要 |
Recovery of sulfuric and nitric acids from spent acid streams in a process for producing beta HMX in which hexamine, ammonia and acetic anhydride are reacted to produce DAPT, the DAPT is treated with a mixture of sulfuric and nitric acids to produce DADN which is then nitrolyzed with N2O5 and anhydrous nitric acid to produce a HMX solution which is added to a dispersion of beta HMX seed crystals in water to selectively precipitate beta HMX from the HMX solution is accomplished by maintaining the DAPT/DADN spent acid stream separate from the HMX spent acid stream and treating the DAPT/DADN spent acid stream in a sulfuric acid recovery unit and treating the HMX spent acid stream in a magnesium nitrate nitric acid recovery unit.
|
