China Aluminum Zhongzhou Branch's application of automatic control system documentary
Recently, Honeywell's Process Control Department held the 2006 China Regional User Conference in Zhuhai. Chinalco Zhongzhou Branch Company, as a larger partner of the non-ferrous metal industry and Honeywell, was sponsored by the conference organizer. More than 230 users from industries such as oil, natural gas, mining, metallurgy, and electric power have paid special attention. Not only was the organizer of the meeting invited to host a welcome speech at the conference, but special experience was also introduced. During the meeting, the reporter interviewed Wang Rongjun, the deputy chief engineer of the two technical experts from Chinalco Zhongzhou Branch, and Liu Baoren, the director of the machine control room. The two experts analyzed and introduced the application of Honeywell system in the Zhongzhou Zhongzhou branch. .
Chinalco Zhongzhou Branch Company introduced Danish Smith Company technology for the construction of the roaster as early as in 1991. For the first time, the #1 roasting furnace adopts the TDC-3000 centralized control system produced by Honeywell, which has led to the realization of production automation. Take a step forward.
TDC-3000 has been used for the first time to achieve integrated control of instruments, electrics and computers. Based on Honeywell's high-quality and reliable technical services, Zhongzhou Branch Company has combined the actual process requirements to continuously develop the advantages of the mining system. Data collection routine process control, advanced process control, logic control, computer and communication and many other technologies, after several years of practical application, the system hardware running is stable, the software configuration is mature and reliable, not only to meet the simulation of the roaster production process, The various control requirements and production needs of the switching quantity play an important role in the production process; at the same time, under the complicated control of the production process of the roaster, the control system has a high degree of stability and reliability.
Prior to the introduction of the Honeywell system, job-based operations had to be carried out on the shop floor. Simply speaking, it was a job. After the Honeywell system was used, the technology was in a control room. At the same time, due to the manual direct control, it is difficult to grasp the accuracy. For example, the furnace temperature should be adjusted to 1,200°C. This is due to the inaccuracy of manual control, resulting in wasted energy.
In 2000, during the construction of the 2# roaster, Chinalco Zhongzhou Branch once again cooperated with the TPS system produced by the company because of Honeywell's products with high quality reputation and excellent service. The TPS system's good compatibility with TDC-3000 has become an important basis for selection. Through HG, the two systems are fused together to form a complete control system, which not only facilitates production control, but also saves investment. The TPS system continues the advantages of the TDC-3000 system, provides more advanced network connection devices, and has a larger capacity of historical modules HM. The user graphics editing function is more powerful and the system configuration is more convenient.
The reliability and stability of TPS system products and the wider and flexible application of software have been unanimously approved by the Zhongzhou branch. For this reason, the TPS system was widely used in Zhongzhou branch from 2002 to 2003, successively evaporating and grinding in 5 groups. Float, boiler, roasting, roasting, evaporation, seed separation, high pressure stripping and other processes used more than 10 sets of TPS systems. In particular, in 2003, the branch established the Bayer process line for the first time in the aluminum industry. The process production technology requires higher requirements and the specifications are more accurate. The control system not only requires stability and reliability, but also has higher requirements for the automation level of the process production process. Conventional PID adjustment, cascade adjustment, super-scaling control, split-range adjustment, and other simple adjustment loops and complex adjustment loops are implemented through the control system.
The flexibility of TPS system application has been widely reflected in the construction of the two lines. The application of CL language and the implementation of various complex control strategies have tapped the system potential of TPS and improved the control level of the device. In the construction of the two lines of the Zhongzhou branch, a large number of PLC equipment and TPS systems achieved communication connection through MODBUS and AB protocols, eliminating a large number of connections and saving production costs. At the same time, the system configuration is simple and flexible, and it achieves a good control of the production process. The TPS system is highly evaluated by its subsidiaries in and out of Zhongzhou. In 2003, under the condition that the grassroots posts and production facilities were generally realized with automatic control, the Zhongzhou branch began to build the second alumina plant production management information network. They used Honeywell's Uniformance system to ensure data reliability through a distributed system of APP and PHD. The WebServer-based production management information browsing solution provides real-time and reliable production data to the branch's leadership and production scheduling.
This year, the Zhongzhou branch will adopt Honeywell's PKS process knowledge system on the new installation. The use of this system will make the Zhongzhou branch's automatic control system more perfect. PKS's versatile, scalable architecture allows it to integrate with existing TPS systems, effectively protect early-stage investments, and enable each level of the organization's organizational structure to help companies connect and expand their knowledge and improve The level of knowledge to improve production and work processes and achieve performance.
Since the first use of the Honeywell system in 1991, the Zhongzhou branch currently uses more than 20 Honeywell systems. With the extensive application of Honeywell's control system in the Zhongzhou branch, Honeywell established a good relationship with the Zhongzhou branch. In order to solve the problem of roasting system alarm and grinding communication, Honeywell engineers repeatedly Go to the scene and cooperate with the technical staff of the Zhongzhou branch to analyze the problems and find solutions. Through the application of Honeywell's control system, Zhongzhou Branch has increased the degree of automation in the production process and achieved the goal of increasing production and efficiency. Various optimized control processes have been implemented in succession, which has played a good role in product quality control and output improvement. The role.
The application of the Honeywell system in the Zhongzhou branch led to the advancement of the company's science and technology. Since the first phase of the project was put into production, the company's alumina production has increased by an annual average of 31.84% through continuous technological transformation and expansion. In particular, after the listing, the alumina production line was built at an extraordinary rate within three years through two Bayer processes with a processing capacity of 300,000 tons. Currently, it has an annual production capacity of 1.6 million tons of alumina. Since 1998, Zhongzhou Branch has achieved more than 200 scientific and technological achievements. The main economic and technical indicators have been continuously improved over the past 10 years. In 2005, the index innovation system of the Zhongzhou Branch Company recorded 43 new records. The output and operating quality of the sintering method system ranks first among all members of the Aluminum Corporation of China. The total labor productivity of the company is 9,361,000 yuan/person-year, which is a record high and a good level for the industry.
Overhead sectional door most widely used for loading areas on all types of industrial premises and Designed with a curved overhead track, these vertically-opening sectional doors can be installed in areas with reduced head room. They provide heat and sound insulation with its composite panel construction.
The counterbalance and cable system provides quiet and straight forward operation for manual doors. Electric operation is available for larger applications that can incorporate many alternative operator options to suit all client requirements.
The standard outer panels are manufactured from 0.5mm thick, high quality zinc coating to BS EN 10147
For the best weather protection the sectional door panel has an interlocking hinged joint integrating a high quality seal the full length of the panel.
A counterbalance system is incorporated into the sectional overhead door to ensure efficient and effortless operation.
The counterbalance comprises of springs mounted on a steel shaft that are high tensile helical wound steel. It has been heat treated for enhanced performance for around 50,000 cycles.
Reducing shaft friction is achieved with the aid of brackets and guide rollers incorporating highest quality sealed bearings.
Overhead Sectional Door,Overhead Sectional Garage Door,Automatic Overhead Sectional Door, Overhead Insulated Garage Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.pvchighspeeddoor.com