Why was Nobel persecuted by France? Does it have anything to do with Napoleon?

Considering that he lived and worked in France for a long time, Nobel was the first to provide his invention patent for mixed smokeless explosives to the French gunpowder monopoly agency "Gunpowder and Nitrate Administration". Unexpectedly, Nobel's kindness was rejected by them. Two years before Nobel invented mixed smokeless powder, a French chemistry professor also invented a product that was very promising to approach smokeless powder. Although it is far inferior to Nobel's mixed smokeless powder in performance, it has been widely used in French Lu Haijun for its relationship with influential political figures.

So Nobel sold his patent to Italy. Unexpectedly, this decision violated some powerful figures of the French gunpowder monopoly administration. They have long been hostile to Nobel's experiments with bullets and gunpowder in France, especially regarding Nobel's mixed smokeless gunpowder as a dangerous competitor. The French press began to lash out at Nobel, accusing him of selling the patent of mixed smokeless powder to the Italian government, thus harming France's interests. Then, he was publicly accused of committing crimes no less than espionage. His laboratory was searched and sealed up by the police. In addition, he was forced to stop production in the mixed smokeless powder production workshop of the French explosives factory, and the experimental products he had made were confiscated by the authorities. He felt that the situation was not good and ran away.

This has nothing to do with Napoleon. When Nobel was born, Napoleon was already dead.