5- methyl tetrazolium is an important chemical product. Process Description: in the reaction kettle into quantitative acetonitrile, sodium azide, three triethylamine hydrochloride and three triethylamine catalyst reaction, under low pressure, full reaction water layer, separating three triethylamine reuse, three triethylamine recovery completely, the remaining material added concentration is 30% NaOH alkalization, three triethylamine as a by-product of the alkaline precipitation; precipitation of three ethylamine materials after put 36.5% hydrochloric acid and sodium nitrite were acidified with exhaust gas output in the process of acidification; acidification after vacuum distillation, vacuum concentration generated when the water vapor condensation back to the layered section; concentrated to the required concentration of the centrifuge, centrifuge separation of high concentration wastewater; material was dissolved with ethanol after centrifugation, dissolved filter, filter salt output filter; salt liquid after concentration and concentration The evaporated ethanol reuse; centrifugal separation was concentrated after separation of products and high concentration liquor; high concentration waste liquor as the output, quality after drying as product output, dry waste gas.
【技术实现步骤摘要】
一种5-甲基四氮唑生产工艺1）化学反应方程式①缩合反应：②碱化反应：③酸化反应：工艺流程简述：在反应釜中投入定量的乙腈、叠氮化钠、三乙胺盐酸盐和催化剂三乙胺，在低压下进行反应，反应充分加水进行分层，分层析出三乙胺回用，三乙胺回收完全后，剩余物料加入浓度为30%氢氧化钠溶液进行碱化，碱化析出的三乙胺作为副产品；析出三乙胺后的物料投入36.5%的盐酸和亚硝酸钠进行酸化,酸化过程中有废气产出;酸化后进行减压浓缩,减压浓缩时产生的水蒸汽冷凝后回用于分层工段;浓缩到所需要的浓度后采用离心分离,离心分离出高浓度废水；离心后物料用乙醇进行溶解，溶解后进行压滤，压滤时有盐产出；滤盐后的母液进行浓缩，浓缩时蒸发出的乙醇回用；浓缩后进行离心分离，分离出产品和高浓度母液；高浓度母液作为固废产出，精品干燥后作为产品产出，干燥时有废气
【技术保护点】
一种5‑甲基四氮唑生产工艺。
【技术特征摘要】
1.一种5-甲基四氮唑生产工艺。2.5...
【专利技术属性】
技术研发人员：胡江海，张晓磊，于飞，
申请(专利权)人：宁夏际华环境安全科技有限公司，
类型：发明
国别省市：宁夏,64
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