[Haichuan Chemical Salary News] The propane dehydrogenation unit at the Guangdong Juzhengyuan project has successfully produced qualified propylene
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At 22:48 on the evening of September 26, 2019, the propane dehydrogenation unit of Phase 1 of the 1.2 million tons per year propane dehydrogenation-based high-performance polypropylene production project at Guangdong Juzhengyuan, constructed by the 10th Construction Company of the Refining and Chemical Engineering Group, was fully operational, and qualified polypropylene was successfully produced – a valuable contribution to the celebrations marking the 70th anniversary of the National Day. The project is located in the Lisha Island Industrial Zone in Dongguan, Guangdong. Since construction began in November 2017, it has faced challenges such as soft soil conditions, delayed drawings, late delivery of key equipment, a long rainy season, and tight deadlines. Shijian Company actively communicated with the owner, supervisor, and design firm; the project team responded promptly, coordinated efforts effectively, and strengthened organizational management. By doing so, it managed to meet the owner’s overall requirements while ensuring that progress was not delayed, quality was maintained, and safety standards were not compromised. It has repeatedly achieved excellent results at key milestones such as the modular lifting of the product separation tower, the early commissioning of the air separation unit, air compressors, and hydrogen-rich boilers, the thermal testing of the reaction system, the airtightness verification of the distillation section system, and the trial operation of the six main units.
The ten companies working on this project are still facing many difficulties; a large number of expansion joints are required for the large-diameter pipes, which makes the work difficult. I learned this from a conversation with a friend, and it seems that the design done by the Ningbo company is different from previous designs.
600,000 tons, LUMMUS process; it’s a pity that many of the equipment isn’t domestically produced.
The first phase of the Juzhengyuan propane dehydrogenation project for producing high-performance polypropylene is a large-scale off-site design project undertaken by Ningbo Engineering Company, comprising four units: a 600,000-ton/year propane dehydrogenation (PDH) unit, a 600,000-ton/year polypropylene (PP) unit, an propylene storage tank area, and auxiliary facilities. The 600,000 tons per year polypropylene (PP) plant is a new type of facility developed by the company for the first time by optimizing the layout of two production lines, each with an annual capacity of 300,000 tons. It consists of 11 units, including T2, raw material supply and purification, polymerization reaction, powder resin processing, exhaust gas recovery, granule resin processing, and utility systems.
The company will reinvest 20 billion in 2019 to build a propylene dehydrogenation plant with an annual capacity of 2.7 million tons, becoming the largest single polypropylene producer in Asia at that time. Phase 2 will be easier
The company will reinvest 20 billion in 2019 to build a propylene dehydrogenation plant with an annual capacity of 2.7 million tons, becoming the largest single polypropylene producer in Asia at that time. Phase 2 will be easier
On February 23, 2017, it was reported that specialty chemicals manufacturer Clariant had reached an agreement with Dongguan Juzhengyuan Technology Co., Ltd. to build a new propane dehydrogenation plant in Dongguan City, Guangdong Province, China. Among them, the overall design and construction of this system will be carried out in collaboration between Clariant and CB&I. The new device will utilize CB&I’s patented Catofin® catalytic dehydrogenation technology, as well as Clariant’s Catofin® catalysts and self-heating materials (HGM). Stefan Heuser, Senior Vice President and General Manager of Clariant’s Catalysts Business Unit, said, “Catofin® catalysts and Exothermic Gas Generation Material (HGM) technologies not only deliver significant commercial value to customers, but also help to reduce harmful gas emissions substantially.” This has been fully proven in numerous previous projects. ” HGM self-heating materials from Clariant can effectively increase the output of Catofin® catalytic dehydrogenation units and enhance their versatility. Upon being added to the catalyst bed, this material will oxidize during the production process and generate heat, thereby facilitating the progress of the dehydrogenation reaction.
On February 23, 2017, it was reported that specialty chemicals manufacturer Clariant had reached an agreement with Dongguan Juzhengyuan Technology Co., Ltd. to build a new propane dehydrogenation plant in Dongguan City, Guangdong Province, China. Among them, the overall design and construction of this system will be carried out in collaboration between Clariant and CB&I. The new device will utilize CB&I’s patented Catofin® catalytic dehydrogenation technology, as well as Clariant’s Catofin® catalysts and self-heating materials (HGM). Stefan Heuser, Senior Vice President and General Manager of Clariant’s Catalysts Business Unit, said, “Catofin® catalysts and Exothermic Gas Generation Material (HGM) technologies not only deliver significant commercial value to customers, but also help to reduce harmful gas emissions substantially.” This has been fully proven in numerous previous projects. ” HGM self-heating materials from Clariant can effectively increase the output of Catofin® catalytic dehydrogenation units and enhance their versatility. Upon being added to the catalyst bed, this material will oxidize during the production process and generate heat, thereby facilitating the progress of the dehydrogenation reaction.
On June 10, good news came from the construction site of the polypropylene project at Guangwu Holding Group: the low-speed operation test of the primary extrusion granulator was successful； On June 11, the high-speed end of the primary extrusion granulator was successfully tested. Clear instructions one after another indicated that the commissioning of the primary extrusion granulator in the polypropylene plant was safe, smooth, and a success from the first attempt. The extrusion granulator is a key unit in polypropylene plants; there is one such unit on each of the two production lines, both of which were purchased from Nippon Steel Works (abbreviated as JSW). The entire extrusion granulation machine system is composed of numerous complex components; its main motor has a power rating of up to 10,000 kW. During operation, it is necessary to coordinate the efforts of mechanical, electrical, and control-related teams. Additionally, frequent tests are required regarding the logical sequence of operations and the timing of actions, in collaboration with manufacturers of additives, rotary valves for material feeding, and air-conveyance systems. Since April 15, the personnel involved in the commissioning of the polypropylene plant, together with technical experts from JSW and other parties, have carried out a series of tasks starting with the cleaning of the oil system, followed by the testing of the main motor, the gearbox, the installation of screws, operation with hot oil, and powder filling. Overcoming various difficulties, they completed the commissioning process in a relatively short time. During the commissioning period, the personnel involved in the commissioning of the polypropylene plant worked day and night, silently contributing their efforts, and many touching stories emerged. Fan Lianfeng goes to the site during the day to verify each piece of data, and in the evening he checks on the progress and finalizes plans, taking proactive action in all tasks ； Zhou Xinsheng continued to work at the site despite having a high fever of 39°C; it was only after the testing was completed and he returned to his dormitory that people became aware of his illness ； There is also a group of young people born in the 1990s who work on the front line every day; their clothes get soaked with sweat again and again, drying out only to become soaked once more... Testing the compression granulator is a crucial step in the testing process for polypropylene, and its successful completion lays a solid foundation for introducing propylene into the polypropylene plant and starting up the production process. Next, Juzhengyuan Company will carry out construction in a scientific manner as planned, advancing all aspects of the project with high standards and strict requirements, so as to achieve the goal of completing the project early, putting it into operation early, and generating returns early.