Research and application of integrated cleaning technology in sulfur conveying system

At present, the sulfur conveying system of Puguang Natural Gas Purification Plant uses the cleaning devices such as the traditional polyurethane scraper and the high pressure wind knife to clean the return material. However, the sulfur dust and dust flying frequently occur during the process, resulting in the elevated sulfur dust concentration in the field and posing safety threat from the possible dust explosion, which would influence the normal operation and production. In this study, an integrated cleaning device was set up at the head of belt conveyer to complete the belt cleaning and dust collecting, which can clean the sulfur adhering on the belt, recover the sulfur in the collection box to the drop pipe through the material recovery mechanism, and remove the sulfur adhering on the belt from the most front end for reducing sulfur dust pollution effectively and ensuring safe and stable operation of equipment. Test results also showed that the integrated cleaning device has good operation effect which remarkably suppresses the dust. The dust mass concentration could reduce to 6.1 mg/m³, which is much smaller than the average dust mass concentrations of 25.1 g/m³ before the installation of the device. It achieves the purpose of reducing the ground sulfur and dust.