Asphalt mixing plant is one of the key equipment for road construction. It is mainly used in the production of asphalt mixture for paving road surfaces. Asphalt mixing plant consists of a number of parts, including dosing system, dryer, agitator, dust removal system, fuel system and so on. Asphalt Mixing Plant,Mixer Plant,Asphalt Mixing Bitumen Equipment,Asphalt Paving Equipment BituRock Science & Technology (Jiangsu) CO., LTD , https://www.biturockequipment.com
After seven years of research, the Changchun Yingshe Institute of the Chinese Academy of Sciences and the Zhejiang Haizheng Group have built a large-scale, green degradable, environment-friendly polylactic acid resin industrial demonstration production line with an annual output of 5,000 tons, and achieved mass production. As of March 19, all performance indicators of the products obtained have fully or partially surpassed the level of similar products in the United States, and the devices have remained stable and can reach stable production. This indicates that following the United States, China has become the second country in the world with a polylactic acid industrialization scale of 5,000 tons or more, and its product quality ranks among the top in the world.
Polylactic acid resin, also known as corn plastic, is produced by natural fermentation of natural corn lactic acid, and then obtained through chemical synthesis. As corn plastics can solve the problem of white pollution and play an increasingly important role in saving non-renewable petroleum resources, it has been recognized by the world as a new type of ecological material for environmental protection and sustainable development in the new century, and it has become a competition for research and development across the world. Major issues.
China consumes more than 20 million tons of plastic each year, and it is also a big producer of corn. The Changchun Institute of Chemical Technology of the Chinese Academy of Sciences forward-lookingly recognized that accelerating the biodegradable PLA plastics research and development has great significance for economic and social development. They focused their research in this major direction from the late 1990s. In 2000, the institute carried out joint research with Zhejiang Haizheng Group, which has considerable strength in China, thereby speeding up the research and development of polylactic acid and its industrialization. During the development process, they made a breakthrough in realizing the localization of L-lactide needed for the synthesis of polylactic acid, and solved three bottleneck problems of increasing the yield, purification and polymerization of L-lactide to prepare polylactic acid. The domestic product with a melting point of 160-180°C, a glass transition temperature of 58-60°C, a tensile strength of more than 65 MPa, and a modulus of more than 3 GPa was obtained, and the product performance reached the advanced foreign standard for polylactic acid.
In the second half of 2000, they shifted the focus of their work to the research and development of polylactic acid industrialization. After nearly 7 years of research, it broke through the industrialization of key technologies such as lactic acid dehydration time, polylactic acid molecular weight distribution, cracking catalyst reaction conditions, monomer high temperature racemization, distillation and polymerization processes. At the end of 2007, they built the first core technology in China with independent intellectual property rights, core technology such as L-lactide cracking, L-lactide purification, green solvent-free bulk polymerization, and the second in the world with an annual output of 5,000 tons of green biodegradable and environmentally friendly Polylactic acid resin industrial demonstration line and achieve mass production. At present, the demonstration line polylactic acid yield is over 90% of the theoretical yield, and the produced polylactic acid has a number average molecular weight of more than 100,000, which fully meets the corporate standards.
The batching system is one of the core parts of Asphalt mixing plant. It is responsible for adding various raw materials to the blender in a certain proportion. These raw materials include asphalt, sand, gravel and other additives. The batching system usually consists of a weighing sensor, a batching bucket and a batching transfer device.
The dryer is another important part of the Asphalt mixing plant. It is mainly used for drying raw materials such as sand and stones. There are heating elements and rotating agitators inside the dryer, which can make the raw materials fully heated and mixed evenly.
Mixer is one of the core parts of Asphalt mixing station. It is responsible for mixing various raw materials together to produce a high quality asphalt mixture. The agitator usually consists of multiple mixing blades, which can fully mix the raw materials to ensure the stable quality of the asphalt mixture produced.
Dust removal system is one of the important components of Asphalt mixing plant. It is mainly used to collect dust and exhaust gases generated during the production process. The dust removal system is usually composed of multiple filters, which can effectively filter out dust and exhaust gas to ensure a clean working environment and air quality.
Fuel system is one of the key parts of Asphalt mixing plant. It is responsible for providing the fuel to power the Asphalt mixing plant. The fuel system usually consists of a fuel pump, a fuel filter and a fuel injector.
Asphalt mixing plant is a kind of high efficiency asphalt mixture production equipment, widely used in road construction field. It has the advantages of high automation, high production efficiency, stable product quality and so on, and provides a strong support and guarantee for road construction.
I became the second country in the world to mass produce corn plastics