Bromoethane synthesis production process

Abstract

The invention belongs to the technical field of chemical production and in particular relates to a bromoethane synthesis production process which comprises the following steps: preparing a 80% sulfuric acid solution from 95% concentrated sulfuric acid and water, cooling, putting into a reaction device, and sequentially adding sodium bromide and ethanol. The invention aims at a most common bromoethane synthesis method, material feeding sequences, material feeding methods, amounts of reactants and reaction conditions of the synthesis method are optimized, and the bromoethane synthesis productionproces which is relatively safe, convenient to operate and relatively high in synthesis rate is provided.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a synthesis production process of bromoethane. Background technique [0002] The organic bromine series intermediates with hydrogen bromide as the main raw material are one of the important products in the field of fine chemicals, and are widely used in the fields of medicine, pesticides, dyes, spices and other synthetic materials. Ethyl bromide is one of the most important organic bromine series intermediates. It can be used as an ethylating reagent in the organic synthesis of medicines and pesticides, and can also be used as a Grignard reagent to participate in organic reactions. Ethyl bromide is a colorless oily liquid at room temperature, with an odor similar to ether, gradually turns yellow when exposed to light, and is volatile. [0003] At present, the synthesis of ethyl bromide mainly includes methods such as ethanol and sodium bromide sulfuric ac...

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Problems solved by technology

[0003] At present, the synthesis of ethyl bromide mainly includes methods such as ethanol and sodium bromide sulfuric acid method, ethanol and hydrobromic acid method, ethanol and bromine sulfur method, among which the most commonly used is the use of ethanol and sodium bromide sulfuric acid method. It is simple, the demand for equipment is relatively low, and the cost of raw materials is low, but the concentrated sulfuric acid used in the actual production process tends to generate a large amount of heat during the synthesis process and has the risk of explosion, and the existing synthesis feeding method is in Add ethanol, concentrated sulfuric acid, water and sodium bromide in sequence. This feeding method is likely to cause part of the sodium bromide to stick to the inner wall of the reaction device, affecting the reaction effect and resulting in a lower synthesis rate.