The high nitrogen content in paraffin oil has an impact on catalysis, etc

Among the nitrogen compounds present in reduced-pressure wax oil, it is the basic nitrogen that can have an impact on catalytic cracking units, as basic nitrogen affects the acidic active centers of the catalysts. However, this effect can generally be reversed through the catalyst regeneration process, at least to a large extent. This situation generally does not require any action. As for the gasoline etherification unit, it is not affected, because reduced-pressure wax oil cannot be fed into that unit for processing.

A high nitrogen content in wax oil may have the following effects on catalytic cracking units and gasoline etherification units: 1. Catalytic cracking units: Wax oil with a high nitrogen content reduces the activity and stability of catalysts, which can lead to a shortened catalyst life, reduced selectivity, and lower yields. Furthermore, nitrogen may also produce toxic substances such as ammonia during the cracking process, causing corrosion and poisoning of the equipment and catalysts. 2. Gas etherification unit: Wax oils with high nitrogen content can affect the activity and selectivity of the etherification catalyst, leading to a decrease in the conversion rate and yield of the etherification reaction; they may also increase the risk of catalyst clogging. To address this issue, the following measures can be taken for adjustment: 1. Change the crude oil mixing ratio: Adjust the components and proportions of the crude oil by reducing the amount of wax oil with high nitrogen content, in order to lower the overall nitrogen content. 2. Upgrading the catalyst: Choosing a catalyst with better nitrogen resistance can improve the conversion rate and yield of wax oils containing nitrogen. 3. Pre-treatment: Before catalytic cracking and gasoline etherification, denitration of nitrogen compounds is carried out, such as using ammonia extraction or hydrodenitration to reduce the nitrogen content. 4. Adjust operating conditions: Depending on the specific circumstances, adjust the operating conditions of the catalytic cracking and gasoline etherification units, such as temperature, pressure, and reactant ratios, in order to improve the conversion rate and yield of nitrogen-containing wax oils. In summary, to address the issue of high nitrogen content in wax oils, it is necessary to take into account factors such as crude oil composition, catalyst performance, and plant operating conditions, and to implement appropriate measures to reduce the impact of nitrogen content on catalytic cracking and gasoline etherification. .