Device for preparing low concentration acetaldehyde solution

• Main Authors: PAN BINGQIANG, WEI MINGCHANG, BAN ZHIHUA, WEI YOU'ANG
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TRANSPORTING

The invention discloses a device for preparing low concentration acetaldehyde solution. The device comprises a concentrated acetaldehyde tank, a valve, a first viewing cup, a mixer, a liquid dischargetube, a first water inlet pipe, a circulating pump, a pressure gauge and a condenser; aiming at the problem of acetaldehyde polymerization easily occurs due to the excessive temperature when acetaldehyde with concentration of 99% is prepared into an acetaldehyde solution with concentration of 40%, the boiling point of concentrated acetaldehyde is analyzed to be 20.8 DEG C, the concentrated acetaldehyde is mixed with water at the room temperature for carrying out an exothermic reaction, the temperature is raised to 60-70 DEG C, and a polymerization reaction is initiated. The device adopts a low-temperature circulating mixing way to prepare, thus avoiding the phenomenon of acetaldehyde polymerization. When the device is in use, the metered soft water is cooled by means of the condenser, then enters a mixer for mixi