The micro-sulfur analyzer independently developed by Puguang Gas Field has been put into operation

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On January 4, news came from the Puguang Branch of Sinopec’s Zhongyuan Oilfield; the domestically produced trace sulfur analyzers installed at its natural gas purification plant have been operating stably for 45 days, with all performance parameters meeting the requirements of on-site production. This means that another core piece of equipment at this factory has been successfully localized. A trace sulfur analyzer is an important device for measuring the levels of hydrogen sulfide and total sulfur (all sulfur-containing compounds) in natural gas after desulfurization and dewatering. It plays a crucial role in determining whether the quality of the natural gas meets the standards required for transportation and sale, acting as a \"quality inspector\" and \"safety officer\" in the production chain of natural gas with high sulfur content. Previously, the trace sulfur analyzers used in this plant were imported equipment; not only were their acquisition costs high, but they also had drawbacks such as long response times and delayed data display, making it difficult to meet the requirements of rapid processing of natural gas with high sulfur content on site. To address this challenge, the factory established a technical task force to localize and modify the trace sulfur analyzer. To address the challenge of synchronized data transmission, technical staff worked closely with the manufacturers to select appropriate communication signal modules, enabling the \"packaging\" and transmission of two key types of data: hydrogen sulfide content and total sulfur content. This approach resolved issues related to transmission delays and data errors for different parameters ； To address the challenge of accuracy calibration, hundreds of calibration tests were conducted, which effectively reduced the impact of changes in ambient temperature and pressure on the detection results. After multiple rounds of debugging and trial operation, the upgraded trace sulfur analyzer demonstrates superior performance: it uses a laser method for detecting hydrogen sulfide levels, offering high sensitivity and fast response times. Errors in parameters such as linear error, repeatability, and zero-point drift are all kept within 2%, which represents a 60% improvement compared to imported equipment ； The total sulfur content is determined using the ultraviolet fluorescence method based on international standards, resulting in an 80% improvement in detection accuracy compared to before. Next, the natural gas purification plant will continue to monitor the operational data of the equipment, expand the application scope of domestically produced micro-sulfur analyzers, further reduce the costs associated with equipment procurement and maintenance, and enhance the ability to ensure reliable operation. This will provide replicable and scalable experiences for the domestic substitution of core equipment in domestic gas fields with high sulfur content.