Rotary vane vacuum pump in coal processing
With the development of coal processing technology, the design for various applications in this field has been improved day by day, which has made important contributions to the safety, energy saving and environmental protection of coal industry. This paper mainly introduces the application of rotary vane vacuum pump in coal processing, and puts forward the basic national policy that the application of vacuum pump equipment can meet the safety requirements and meet the national circular economy, energy-saving economy and sustainable development. It will elaborate the development of vacuum pump equipment for coal processing.
Because of the harsh working environment in the mining area, the rotary vane vacuum pump is required to have large air pumping capacity, high vacuum degree and reliable operation. Now the rotary vane vacuum pump is designed and manufactured by international advanced technology. The gas volume can reach 500-40 000 m3/h, which can fully meet the needs of coal mine industry. It is not only suitable for CBM drainage while digging and mining, that is, in the process of mining coal seam, but also suitable for post-mining drainage, that is, abandoned mine and mining roadway CBM drainage.
What is coal processing?
Coal processing refers to the application of physical, chemical or physical chemical methods to remove mineral impurities and harmful elements in coal, to produce coal varieties of different quality to meet the different needs of different departments, and to create conditions for the effective comprehensive utilization of coal. Coal processing is divided into rough processing, fine processing and fine processing according to the processing depth. Rough processing mainly refers to the sorting and screening of raw coal (coal produced in coal mines without any processing); fine processing mainly refers to wet or dry coal sorting; fine processing mainly refers to the conversion of coal, such as gasification, liquefaction, fluidization (coal water slurry) and extraction of ultra-pure coal.
Coal utilization refers to the scientific utilization of processed coal, which not only makes full use of its thermal energy and various useful chemical components, but also recovers, extracts and utilizes associated minerals or elements as much as possible. In this process, we should minimize the harm to the environment. As energy, it is used as fuel in industry, agriculture and daily life. As raw material, it is used to produce gas and coke by chemical or physical chemical methods and extract chemical products, such as ammonia, benzene, sulfur, hydrocarbons, humic acid, various aliphatic hydrocarbons and polycyclic compounds. Coal is also the raw material for making calcium carbide, electrodes and activated carbon. The comprehensive utilization of coal also includes the utilization of coal-associated minerals (such as coal-bed methane, pyrite, clay) and coal gangue and fly ash.
Traditionally, equipment manufacturers mainly manufacture vacuum pumps, and the equipment matching degree is low. Because of the inconsistent configuration, the main equipment is inefficient, and even because of the differences in specialization, the equipment can not work properly. Therefore, the complete set of equipment is the requirement of the coal industry for the rotary vane vacuum pump plant, and also the direction of product development. According to the characteristics of coal mine, provide personalized vacuum equipment.
What are the main aspects of the application of rotary vane vacuum pump in coal processing?
1. Used for coal bed methane transportation, compression and enrichment;
2. Gas drainage in waste mines;
3. Coal chemical process;
4. Coal preparation;
5. Dust collection;
6. Cable drying;
7. Flame-retardant belt production.
Rotary vane vacuum pump is widely used in coal processing, therefore, energy saving and consumption reduction is more important. These applications can not only increase the benefits of enterprises, but also contribute to the development of coal processing industry and national economic construction.