Ethanol synthesis reactor with heat exchange unit

• Main Authors: SHAO JIE, PAN KE, NING JIQUAN, GAN DAOCAI, TANG GUANGBIN, PAN XINGHUI
• Format: Patent
• Language: English
• Published: 26.08.2015
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to an ethanol synthesis reactor with a heat exchange unit. The ethanol synthesis reactor comprises a reactor body and the heat exchange unit, wherein the reactor body is connected with a gas mixture reactor inlet pipe and a crude ethanol reactor heat outlet pipe. The ethanol synthesis reactor is characterized in that the heat exchange unit is formed by a first heat exchanger, a second heat exchanger and a third heat exchanger which are connected in series through a pipeline in turn; the gas mixture reactor inlet pipe is connected with a cold source channel of the first heat exchanger; the crude ethanol reactor heat outlet pipe is connected with a heat source channel of the first heat exchanger; a raw material hydrogen third heat exchanger inlet pipe is a cold source inlet pipe of the third heat exchanger; an acetic acid and hydrogen mixture second heat exchanger inlet pipe is connected with a cold source inlet pipe of the second heat exchanger. According to the ethanol synthesis reactor with the heat exchange unit, the heat recovery utilization rate is high, the pipes and the devices are connected with each other in a direct welding mode, and accordingly the problems of the pipe thermal stress and the system flange sealing are solved so as to solve the problems of the process for preparing ethanol through acetic acid and hydrogenation.