3 results about "Propyl formate" patented technology

The invention relates to a method for separating an n-propyl formate-n-propyl alcohol-water mixture by liquid-liquid phase separation coupling extractive distillation, which comprises the following steps of: dividing a raw material into a water phase and an organic phase by using a phase splitter based on the heterogeneous characteristic of an azeotropic system, and carrying out four-tower operation on a rectifying tower (C1), a rectifying tower (C2), a rectifying tower (C3) and a rectifying tower (C4) to obtain an n-propyl formate-n-propyl alcohol-water mixture. The efficient separation of the n-propyl formate-n-propyl alcohol-water mixture is realized. After separation, the molar fraction of n-propyl formate is greater than 99.99%, the molar fraction of n-propyl alcohol is greater than 99.99%, and the molar fraction of water is greater than 99.99%. The method provided by the invention realizes high-efficiency and low-energy-consumption separation of the n-propyl formate-n-propanol-water azeotropic mixture, and has economic benefits and environmental friendliness.

The utility model discloses a hydrochloride synthesis system, which comprises a blender used for premixing various received raw materials; the propylene diamine raw material pipeline system is used for storing N, N-dimethyl propylene diamine and can be used for conveying a propylene diamine raw material into the mixer; the deionized water pipeline system is used for storing deionized water and conveying the deionized water into the mixer; the n-propyl ester raw material pipeline system is used for storing n-propyl chloroformate and conveying n-propyl ester raw materials into the mixer for mixing; the micro-channel reactor is communicated with the mixer and is used for providing a reaction place for various raw materials; and the product intermediate storage tank is connected with the micro-channel reactor and is used for storing the intermediate product produced by the micro-channel reactor. Compared with an existing reaction mode, the reaction conversion rate can reach 99%, the molar yield can reach 97%, the reaction yield of propamocarb hydrochloride can be effectively improved, meanwhile, the reaction time can be shortened, and the reaction is safer.

This invention relates to a homogeneous extractive distillation method for separating the formate-n-propanol azeotrope using [EMIM][AC], belonging to the field of special distillation technology containing ionic liquids. The method includes the following steps: a mixture of formate and n-propanol is fed into an extractive distillation column; the ionic liquid 1-ethyl-3-methylimidazolium acetate ([EMIM][AC]) is added from the top of the column, and extractive distillation is performed inside the column. Formate is obtained at the top of the column, and a mixture of n-propanol and the ionic liquid is obtained at the bottom. The bottom stream is sequentially fed into a primary flash tank and a secondary flash tank for fractional flash evaporation recovery. The n-propanol-rich vapor phases obtained from the tops of the primary and secondary flash tanks are condensed and then combined to obtain the n-propanol product. The regenerated ionic liquid obtained from the bottom of the secondary flash tank is recycled back to the extractive distillation column for reuse. This method has the advantages of simple process, high separation efficiency, and recyclability of the ionic liquid.