How to deal with common by-products (e. g. propylene glycol, chloride) in the production of butanone?

In the process of butanone production, due to the limitation of reaction conditions and incomplete conversion of raw materials, some by-products are often formed. These by-products will not only affect the quality of the product, but also may cause pollution to the environment. Common by-products include propylene glycol and various chlorides. This article will analyze the treatment methods of these by-products in detail to help manufacturers better manage environmental protection.

1. Propylene glycol treatment

Propylene glycol is one of the common by-products in the production of butanone. It is mainly caused by impurities in the raw materials or improper control of the reaction conditions. Propylene glycol is a colorless and transparent liquid with certain toxicity. If it is not handled properly, it may cause harm to the environment and human health.

1.1 chemical conversion method

Chemical conversion is a commonly used method for the treatment of propylene glycol. By adding appropriate catalysts and reactants, propylene glycol can be chemically reacted and converted into harmless substances. For example, propylene glycol can react with an oxidizing agent to produce carbon dioxide and water, thereby achieving harmless treatment. The advantage of this method is that the treatment is thorough and does not leave any residual substances.

1.2 physical separation method

Physical separation is another effective method for the treatment of propylene glycol. Propylene glycol can be separated from the mixture by distillation, adsorption, etc., and then recycled. For example, propylene glycol can be adsorbed using an activated carbon adsorbent and then recycled through a washing and regeneration process. The advantages of this method are simple operation and low cost.

1.3 biodegradation method

Biodegradation is also a viable method of propylene glycol treatment. By utilizing the metabolic action of microorganisms, propylene glycol can be decomposed into harmless substances. For example, certain bacteria can break down propylene glycol into carbon dioxide and water. The advantage of this method is that it is environmentally friendly and does not produce secondary pollution.

2. Chloride treatment

Chloride is another common by-product of the butanone production process. It is mainly due to the fact that the raw material contains chlorine, which is generated during the reaction. There are many types of chlorides, including hydrogen chloride, sodium chloride, etc. Some of these chlorides are corrosive and may cause damage to equipment and the environment.

2.1 chemical oxidation method

Chemical oxidation is a common method for treating chlorides. By adding an oxidizing agent, the chlorine element in the chloride can be oxidized to a harmless substance. For example, hydrogen peroxide can be used to oxidize chlorine in chloride to chlorate, and then generate harmless chlorate through neutralization reaction. The advantage of this method is that the treatment is thorough and does not leave any harmful substances.

2.2 adsorption filtration method

Adsorption filtration is another effective chloride treatment method. By using an adsorbent, such as activated carbon or an ion exchange resin, harmful components in the chloride can be adsorbed on the surface of the adsorbent and then separated by filtration. For example, an ion exchange resin can be used to adsorb chloride ions from the chloride and then release the chloride ions through a regeneration process. The advantages of this method are simple operation and high processing efficiency.

2.3 recycling method

Recycling is also a viable chloride treatment method. By extracting the chlorine element in the chloride, it can be reused in the production process, thereby realizing the recycling of resources. For example, the chlorine element in the chloride can be extracted and then reused in the raw material. The advantage of this method is to save resources and reduce production costs.

3. By-product treatment precautions

When dealing with by-products in the production of butanone, the following points need to be paid attention:

A suitable treatment method must be selected. Different by-products have different treatment methods, and it is necessary to select the appropriate method according to the type and nature of the by-products. For example, propylene glycol and chloride are treated differently.

Environmental regulations must be strictly observed. When dealing with by-products, it must comply with national and local environmental regulations to ensure that the treatment process will not cause pollution to the environment.

Equipment maintenance must be strengthened. The equipment for processing by-products must be maintained and updated regularly to ensure its normal operation. If the equipment fails, it may cause by-products to leak, which may cause pollution to the environment.

4. Summary

Common by-products of butanone production, such as propylene glycol and chlorides, can be hazardous to the environment and human health if not handled properly. Therefore, effective treatment methods must be taken to ensure the safe disposal of by-products. Chemical conversion, physical separation and biodegradation are effective methods for the treatment of propylene glycol, while chemical oxidation, adsorption filtration and recycling are effective methods for the treatment of chloride. When dealing with by-products, it is necessary to choose the appropriate treatment method, comply with environmental protection regulations, and strengthen equipment maintenance to ensure the safe treatment of by-products.