Safe and energy-saving acyl chloride producing device and method

Abstract

The invention belongs to the technical field of acyl chloride producing devices, and particularly relates to a safe and energy-saving acyl chloride producing device and method. The safe and energy-saving acyl chloride producing device comprises a thionyl chloride storage tank, a reaction kettle, a primary condenser and a secondary condenser; the thionyl chloride storage tank is connected with a cold source medium channel of the primary condenser in a circulating mode; the reaction kettle is sequentially connected with a hot source medium channel of the primary condenser and a hot source mediumchannel of the secondary condenser, and the primary condenser and the secondary condenser are connected with the reaction kettle through return pipelines. The safe and energy-saving acyl chloride producing device is simple in structure and convenient to operate, heat energy generated in the acyl chloride producing process can be fully utilized, unsafe factors caused by condenser leakage are eliminated, and the safety of the device is improved. The invention further provides the safe and energy-saving acyl chloride producing method.

Description

technical field [0001] The invention belongs to the technical field of acid chloride production devices, and in particular relates to a safe and energy-saving acid chloride production device and method. Background technique [0002] Acyl chlorides are a very important class of organic intermediates, which can mainly undergo various reactions such as hydrolysis, alcoholysis, ammonia (amine) solution, reaction with organometallic reagents, reduction reaction, α-hydrohalogenation, etc. has a wide range of applications. Commonly used synthesis methods of acid chlorides include phosphorus trichloride method, phosphorus pentachloride method, thionyl chloride method and phosgene method. Among them, thionyl chloride is an acylating reagent that was used earlier. Because of its mild reaction conditions, convenient post-treatment, and high reaction yield, it is widely used in scientific research and industry, and it is still used at home and abroad. This method. [0003] At present...

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Problems solved by technology

[0003] At present, in industrial production, when the acid chloride is prepared by the thionyl chloride method, the cooling source of the primary condenser in the reaction process is circulating water, and the thionyl chloride reacts violently with water, releasing a large amount of gas. In the actual production process, Once a condenser leakage accident occurs, improper handling will easily cause a major accident; the reaction device is not a pressure vessel, and there is great uncertainty in the consequences of the condenser leakage accident

Moreover, the large amount of hot water generated after the heat exchange of the circulating water in the condenser cannot be effectively utilized, resulting in a low utilization rate of heat energy

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