Rongxin Chemical is determined to win the battle for stable production through maintenance work

Thread Content

Rongxin Chemical is determined to succeed in the challenge of carrying out maintenance work while ensuring stable production. Author/Source: Rongxin Chemical. Date: 2022-04-15. Clicks: 12. Over the past few days, Rongxin Chemical has taken into account the actual situation of one set of systems being under maintenance and another set still in operation, implementing detailed measures for precise control. It focuses on carrying out systematic maintenance work in an orderly manner, while also ensuring the stable operation of the facilities, thereby being determined to overcome the challenges associated with maintenance work and maintaining stable production. This maintenance campaign focuses on replacing the hydrogenation catalyst in Ethylene Glycol Synthesis Line A, comprising 21 maintenance tasks, with an estimated duration of 35 days. The company took proactive steps to coordinate with qualified external maintenance firms to enter Dalaat Banner; in strict compliance with local epidemic prevention and control requirements as well as regulations regarding the entry of outsiders into the facility, these firms were placed under centralized quarantine, and they were required to provide relevant documents such as nucleic acid test results before being allowed to enter. Organize technical management personnel, team leaders, and front-line workers to receive training on business knowledge, safety and environmental protection, as well as scientific and civilized maintenance practices; provide training to external contractors on maintenance safety and emergency response capabilities. Upon the arrival of the catalyst, staff from the coal preparation workshop shall be arranged to drive the catalyst transport vehicle into the plant; once the catalyst is unloaded in the ethylene glycol area, the vehicle shall leave the plant. Catalyst transport drivers are strictly prohibited from entering the plant. Currently, the work of removing the catalysts from the four hydrogenation reactors is in full swing. Below the discharge ports of these reactors, the area has been tightly enclosed with colored steel plates and striped fabric to prevent the catalysts from scattering and the catalyst powder from spreading. The loading and unloading of the catalyst requires 24 hours of continuous work, and the employees from the ethylene glycol team, wearing green safety vests, also need to work in three shifts. During the maintenance of Set A for ethylene glycol production, the company continued to optimize system operation by shutting down Boiler No. 1 and Set A of the air separation unit at appropriate times, and diverting the syngas that originally went into the ethylene glycol system to the first-phase synthesis system, resulting in a 5% increase in the daily methanol production volume. By shutting down the ethylene glycol distillation system, approximately 105 tons of steam are saved per hour, resulting in cost savings of over 400,000 yuan per day. Strengthen the control of coal blending ratios, optimize the composition of feed gas and process operation parameters to ensure the stable operation of the system. Relevant workshops adjust or shut down equipment such as circulating water systems, in order to minimize the consumption of common utilities.