Undecenoic acid CAS 112-38-9

The 10- undecenoic acid coarse items obtained by the raw oil as the raw material through the alcohol, thermal cracking, bonus, and saponification acidization of the raw oil are directly put into the input tank 1 in the molecular distillation device in the molecular distillation device, and the pump M1 is entered into the first -level film distiller 2 Deserting and off -air, the operating conditions are controlled at the vacuum ‑0.085 ～ ‑090MPa, the temperature is 60 to 70 ° C, and the feeding speed is 15-20kg/h;

Then enter the 10- undecenoic acid rough products that have been dehydrated and exhausted directly into the second -level molecular distiller 3 through the pump M2, and the operating conditions are controlled to the vacuum of 100Pa ~ ‑0.1MPa, and the temperature is 50-60 ° C to remove the low boiling point aldehyde , Alcohol, hydrocarbon, and neutral fat impurities; finally, enter the 10- undecenoic acid coarse products that have removed the low -boiling point impurities directly into the third -level molecular distiller 4, and the operating conditions are controlled to the vacuum level 100Pa ~ ‑0.1 MPA and temperature 80 ~ 85 ° C, which obtains colorless or slightly yellow high purity 10- undecenoic acid.

The preheating furnace uses φ30 × 1000mm stainless steel pipes, fills in the ceramic La West ring filler, and the cracking furnace uses φ40 × 1000mm stainless steel pipes, and the internal split catalyst is catalyst. The preheating furnace and the tube of the cracking furnace coat tube are used to control the temperature in the furnace with the temperature control instrument. Detect the preheating temperature and cracking temperature at the exit of the preheating furnace and the cracking furnace, respectively.

Cymphonate methalodenia is added with 5.8ml/min, and the water is added with 6.0ml/min. The mix of mixing into the preheating furnace is heated to 250 ° C to introduce a cracking furnace. Heavier, analyze the content of 10-1rne and goghosytaltaltaltalfamin with gas phase chromatography. Calculated 10-1rne-of-eleate germine was 46.5%, and the yield of Gengdehyde was 25.7%.