Thread Content
Daya Ammonia Production Reaches New High Author/Source: Yunnan Daya Ammonia Co., Ltd. Date: 2022-11-26 Clicks: 17 After more than a month of intense efforts, the daily ammonia production volume of Daya Ammonia’s production facility has reached a new record following its repair and restart. On November 24, the daily production of synthetic ammonia reached 1,798.8 tons, setting a new record since the plant began operations; the enthusiasm from this achievement had not yet faded when, on November 25, the daily production of synthetic ammonia once again broke a record, reaching 1,841 tons. The increase in daily production signifies that all the efforts made by Daida Ammonia Production since it began implementing innovative technological upgrades to enhance the capacity of its large-scale facilities in 2021 have borne fruit, resulting in a significant boost in the production capacity of its ammonia synthesis plants. This is another outcome of the innovative efforts by the Party committee and administrative leadership team of Dawa Ammonia Production Company in fully implementing Yuntianhua Co., Ltd.’s \"Special Work Plan for Enhancing the Comprehensive Capabilities of Large-scale Facilities and Product Competitiveness\" (Yuntianhua Co., Ltd. [2021] No. 41). In October 2020, the joint-stock company issued a notice regarding the establishment of goals and projects for improving the comprehensive capabilities of its large-scale manufacturing units. The company’s Party committee and management team attached great importance to this matter; by taking into account the current state of these units, they conducted a thorough review, analysis, and discussion of the factors that hindered the improvement of the units’ comprehensive capabilities and their product competitiveness. As a result, four renovation projects were identified: a project for the comprehensive recovery and utilization of nitrogen-rich exhaust gases, research and application aimed at increasing the operational efficiency of the gasification furnaces, technical improvements for the K1301 unit, optimization of the conversion unit technology, and research on techniques to increase the ammonia yield in the synthesis towers. Four project teams were formed, and a schedule for carrying out these renovations was established. Han Lingang, the company’s general manager, along with deputy general managers Yu Zuida and Wang Huiping, as well as Zhang Xiaodong, the assistant to the general manager, served as the supervisors of these four project teams, responsible for ensuring that the relevant renovation work was carried out in accordance with the established schedule. Construction of the comprehensive recovery project for treating exhaust gas with liquid nitrogen began in 2021; the project was completed and put into operation in late December. From January to April 2022, improvements were made to address the issues that arose during the trial operation period, and in April, performance evaluations of the comprehensive recovery project were carried out. After it went into operation, the amount of fuel gas used was reduced, which resulted in an increase in ammonia synthesis output of approximately 27.2 tons per day. At the same time, the consumption of low-pressure nitrogen was reduced by 4,000 Nm3/h, thereby increasing ammonia production while reducing energy consumption. At the same time, in 2021, efforts were made to improve the operating efficiency of the gasification furnace, research and application related to this were carried out, along with studies on the capacity expansion upgrades for K1301, technical optimizations for the shift unit, and research and design efforts aimed at increasing the ammonia yield in the synthesis tower. In 2022, due to the impact of the pandemic, the manufacturing schedules for equipment such as the gasifier evaporators II/III, converter E04102, and synthesizer E04502 were affected. With the assistance of its parent company, the company conducted multiple discussions with the equipment manufacturers to re-optimize and rearrange the manufacturing timelines, ensuring that the equipment was delivered on schedule. The technical upgrades for these three projects were completed during the major maintenance period in October–November 2022.