Pulverized coal distributor

      In the blast furnace pulverized coal injection system, the pulverized coal distributor plays a pivotal role. It acts like a precise dispatcher, evenly distributing pulverized coal to every tuyere of the blast furnace. This key device is mainly divided into three categories: angle-lifting type, bottle type, and disc type. Each type is designed for specific working conditions to meet the diverse needs of the blast furnace pulverized coal injection system.

      First, let's focus on the YFPQ angle-lifting type pulverized coal distributor. This distributor is specially designed for the single-pipe pulverized coal conveying system for ironmaking and pulverized coal injection, with the design concept of achieving uniform distribution of pulverized coal for multi-pipe injection in front of the furnace. Its outlet design is flexible, and it can be divided into 6 to 35 pipes according to actual needs. The pipe diameters are available in three specifications: 15, 20, and 25, and each specification supports two connection methods: flange and threaded connection, which provides great convenience for users.
          However, the angle-lifting type is only one member of the pulverized coal distributor family. The PFPQ bottle-type pulverized coal distributor and the PSFPQ disc-type pulverized coal distributor also play an indispensable role in the blast furnace pulverized coal injection system. Although the specific design details of these two distributors have their own unique features, their common goal is to ensure that pulverized coal can be stably and evenly conveyed to each tuyere of the blast furnace.

        When we delve into the structural features of pulverized coal distributors, we have to mention the emergence of a new type of conical distributor. This distributor not only inherits the advantages of various previous types of distributors but also integrates advanced foreign technical concepts, making it a leader in the blast furnace pulverized coal injection system. The design of the conical distributor abandons the drawback of horizontal distribution of branch pipes in traditional bottle-type and disc-type distributors, and instead adopts a design where branch pipes are evenly distributed above the main body. The branch pipes of the conical distributor are distributed in an angle-lifting manner (90 degrees or 120 degrees). This innovative design greatly improves the distribution accuracy and stability of pulverized coal.
        The main body of the new type of pulverized coal distributor adopts a conical inner cavity design. The sum of the outlet areas of each branch pipe is close to the area of the inlet channel. This design enables the solid-gas flow entering the inner cavity to form a strong vortex, which evenly wraps the pulverized coal and distributes it to each branch pipe. During this process, the pulsation of pulverized coal conveying is small, and the injection is stable and reliable, ensuring that users can obtain the ideal flow rate. At the same time, since there is no throat structure inside the distributor, the resistance loss is greatly reduced, avoiding problems such as throat blockage and the decline in distribution accuracy caused by uneven throat wear.

        It is worth mentioning that the new type of pulverized coal distributor is made of carbon steel parts and undergoes precision machining, with high geometric accuracy, ensuring the durability and reliability of the equipment. Its conical inner cavity structure is simple, with small volume and light weight, making the inspection and maintenance of the equipment easier. In addition, this distributor is also applicable to pulverized coal conveying systems under various gas-solid ratios of blast furnace pulverized coal injection systems. It can be used for both dilute phase conveying and dense phase conveying, demonstrating its wide applicability.
        In the blast furnace pulverized coal injection system, there are many types of pulverized coal distributors. According to their appearance, they can be divided into bottle type, spherical type, disc type, conical type (angle-lifting type), curved branch pipe type, etc. According to the material of the branch pipes, they can be divided into wear-resistant alloy type, wear-resistant ceramic type, and other types. With the continuous progress of ironmaking technology and the gradual increase of the pulverized coal injection ratio of blast furnaces, the working capacity of pulverized coal distributors is also facing unprecedented challenges. To meet this challenge, our Xiangye Company continuously carries out technological transformation and process improvement of pulverized coal distributors to enhance their working efficiency and service life.
        In summary, the pulverized coal distributor is a key equipment in the blast furnace pulverized coal injection system. The stability of its performance and the accuracy of its distribution directly affect the production efficiency and product quality of the blast furnace. Therefore, when selecting and using a pulverized coal distributor, we need to fully consider the actual situation and needs of the blast furnace, and choose the most suitable type of distributor to ensure the stable operation and efficient production of the blast furnace pulverized coal injection system. At the same time, we also need to continuously pay attention to industry trends and technological innovations, so that we can upgrade and optimize the pulverized coal distributor in a timely manner to meet the development needs of the blast furnace pulverized coal injection system.