System and method for producing sulfolane

The invention provides a system for producing sulfolane and a method for producing sulfolane. The system comprises a first air stripping tower, a hydrogenation device and a second air stripping tower;the first air stripping tower is provided with a sulfolane backflow inlet and a first liquid phase outlet which are communicated with each other; the hydrogenation device is communicated with the first liquid phase outlet; the second air stripping tower is communicated with an outlet of the hydrogenation device, the second air stripping tower is provided with a sulfolane backflow outlet and a second liquid phase outlet, and the sulfolane backflow outlet is communicated with the sulfolane backflow inlet. The sulfolane reflux outlet of the second air stripping tower is communicated with the sulfolane reflux inlet of the first air stripping tower, so that sulfolane can be directly used for preparing a hydrogenation liquid in the first air stripping tower after air stripping, and the increaseof the concentration of s