[Ten years of major development in chemical technology] 180-2017 The country's first "pressurized gas phase extraction and cooling 50,000 tons of melamine co-production of urea" project
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This post was last edited by Swimming Fish in the Desert on 2023-7-24 07:45, praising the great development of chemical science and technology in the past ten years, and praising China's prosperity and strength in the prosperous age. It will be more lively with everyone's participation, and the ocean will be more exciting with you. Everyone is welcome to participate in the forum to exchange and discuss, and pay attention to fire prevention in July.------------------------------------------------ At 6:00 on October 31, 2017, Yangmei Fengxi Group’s first nationwide “pressurized gas phase extraction cooling with an annual output of 50,000 tons of melamine co-production of urea” project was successfully tested. Since the start of construction in January 2017, with the strong support of the group company, chemical industry group and Fengxi Group, Linyi Branch and all project department personnel have adhered to the core concept of "working together and working together" to overcome adverse conditions such as extreme weather such as hot summer and rain, unprecedented severe environmental pressure, and difficult project construction and complex processes. Through rigorous demonstration, active organization, scientific construction, tenacious struggle, seizing the construction deadline, and overcoming difficulties, the project was successfully put into operation in 10 months. The technology of this project is the first of its kind in China. It directly uses urine as raw material and adopts medium and low pressure continuous method to produce melamine. It has the advantages of short process flow, low material and energy consumption, high rate of high-quality products, safe and convenient start-up and parking, etc. ； All installations and equipment are domestically produced and maintenance costs are low. ； There is no wastewater discharge during the production process, and the exhaust gas can be recycled to produce urea, which is environmentally friendly. This device deeply processes urea to increase the added value of the product, which is conducive to adjusting product structure and industrial structure, developing a circular economy, promoting sustainable and healthy development of enterprises, and enhancing the ability of enterprises to withstand market risks.
The technology of this project is the first of its kind in China. It directly uses urine as raw material and adopts medium and low pressure continuous method to produce melamine. It has the advantages of short process flow, low material and energy consumption, high rate of high-quality products, safe and convenient start-up and parking, etc.； All installations and equipment are domestically produced and maintenance costs are low. ； There is no wastewater discharge during the production process, and the exhaust gas can be recycled to produce urea, which is environmentally friendly. This device deeply processes urea to increase the added value of the product, which is conducive to adjusting product structure and industrial structure, developing a circular economy, promoting sustainable and healthy development of enterprises, and enhancing the ability of enterprises to withstand market risks. The completion and operation of the melamine project became a turning point for Linyi Branch to turn around losses and increase profits. It marked the company's decisive victory in the battle to turn around losses and increase profits, and was a milestone in the development history of Linyi Branch. The successful commissioning of this device has enhanced Fengxi Group's confidence in turning around losses and increasing profits, and further strengthened Fengxi Group's determination to develop downstream products such as urea and methanol, extend the industrial chain, increase product added value, optimize product structure, develop a circular economy, and promote the sustainable and healthy development of enterprises.
The 100,000 tons/year melamine project of Xinjiang Jinxiang Sairui Coal Chemical Technology Co., Ltd. started construction in May 2013, including two sets of melamine units with an annual output of 50,000 tons. In March 2014, the project was postponed due to the severe impact of the global economic downturn. In recent years, through various levels of * * , financial system, and cooperative units, the project resumed construction in mid-September. The project after resumption combines Sichuan Jinxiang's years of technological accumulation and innovation in the field of melamine, combined with Xinjiang Fukang's unique coal chemical resource advantages. The technical level of melamine, as well as product energy consumption and cost, will reach new levels in the global industry. The completion and commissioning of this project will help consolidate Sichuan Jinxiang's leading position in the global industry, and the moderate concentration of market resources will effectively promote the sustainable and healthy development of the industry.
Directly using urine as raw material, using medium and low pressure continuous method to produce melamine, it has the advantages of short process flow, low material and energy consumption, high rate of superior products, safe and convenient starting and parking, etc.
On the afternoon of October 27, 2020, the third seminar on melamine production technology of Yangmei Fengxi Group was held in the Xiyuan conference room on the third floor of the agency. The meeting was chaired by the company's chief engineer Guo Wenlong. Technical Center Director Wang Kangping, Deputy Director Jing Yunfeng, Production Management Department Director Song Wenge and the deputy managers in charge of each branch (subsidiary) company, the person in charge of the technical center and the directors of the relevant production workshops attended the meeting. At the meeting, the staff of the technology center made a special report on the progress of the topics arranged at the last meeting, and the triamine technical leaders of each branch (subsidiary) company summarized the progress and existing problems of each topic. The meeting focused on three main directions: strengthening cooperation and exchanges with technology providers, accelerating the process of transformation projects, and following up and optimizing triamine process indicators. The meeting requested that the Linyi Branch's Phase I melamine crystallizer high-temperature nitrogen jacket insulation device be installed, the hot gas cooler online cleaning technology be introduced, the Linyi Branch's Phase II melamine co-production system add a methylamine liquid filter, and the methylamine pump inlet add a buffer tank, etc., be completed as soon as possible. The production process indicators of the corrosion state of melamine are compared with the parameters during normal operation, and solutions are proposed to practical problems such as leakage of the chlorine system that often occurs during the production process and the small packaging capacity of melamine, so as to achieve the goal of reducing melamine corrosion and increasing output as soon as possible. The meeting emphasized that each company should combine the current "Five Everyone" activities carried out by the company, contact the actual technical problems in its own production, constantly overcome difficulties, effectively implement "Everyone Innovation" and put forward rational suggestions.
The 50,000 tons/year melamine project of Linyi Branch of Yangmei Fengxi Group was successfully launched on October 31, 2017 after one year of careful organization and rigorous construction by the company leaders and all members of the project department. After more than one month of trial operation, the production capacity and various consumption indicators have reached the design requirements. December 14, 2017 0: From 00 to 24:00 on the 16th, the company conducted a 72-hour production and standard assessment on the project. Compared with the feasibility study report (project proposal) of Linyi Branch's 50,000 tons/year melamine project and the signed project target responsibility letter, the output and consumption indicators of the 50,000 tons/year melamine project met the requirements of the project proposal. ； The comprehensive benefit index of the project equipment met the requirements of the project proposal and target responsibility letter, and passed the 72-hour production and standard assessment. Various inspection data of the 50,000 tons/year melamine project of Linyi Branch are qualified. The actual production capacity is 151.92 tons/day, reaching the target production capacity of 150 tons/day in the project proposal. ； Urea consumption is 2990kg/ton of melamine, meeting the project proposal target of 3000kg/ton of melamine. ； The power consumption is 650kWh/ton of melamine, meeting the project proposal target of 700kWh/ton of melamine. ； Coal consumption is 590kg/ton of melamine, meeting the requirement of 600kg/ton of melamine ； The quality of melamine products meets the requirements of GB/T9567-1997 standard.
Chemical science and technology has developed greatly in the past ten years, praising China's prosperity and strength in the prosperous age