High and low pressure water-coal slurry pumps

I would like to know the current application status of domestic high-pressure water-coal slurry pumps in coal-based chemical plants, and what the risks are of choosing such pumps for newly constructed plants

Domestic manufacturers that can supply low-pressure coal slurry: Shanghai Dalong, Chongqing Water Pump, Shenyang Water Pump, China Nonferrous (Shenyang) Metallurgical Machinery Co., Ltd

This post was last edited by Louwangzhiyu on 2010-8-18 at 12:10. The Shanghai No.1 Water Pump Factory Co., Ltd. is capable of producing MY-type centrifugal water-coal slurry pumps. Overview: Due to the special nature of the applications for water-coal slurry pumps, high demands are placed on the product’s service life, operational reliability, and ease of maintenance. Leveraging decades of technical expertise and experience in mining pumps, Shanghai No.1 Water Pump Factory Co., Ltd. conducted thorough research on coal gasification processes and the characteristics of water-coal slurry, and successfully developed the MY series of centrifugal water-coal slurry pumps on its own – a product that filled a gap both domestically and internationally. Through years of research, exploration, and continuous improvement, the MY-type centrifugal slurry pump system overcomes some of the difficult-to-fix drawbacks associated with the use of diaphragm pumps in coal gasification processes. These drawbacks include high investment costs, complex control systems, prone damage to the diaphragms, short lifespan of control valves, high maintenance costs, a narrow range of flow and pressure adjustments, and large space requirements. Through expert evaluation and verification by actual user application, centrifugal water-coal slurry pumps can replace diaphragm pumps and be widely used in the field of water-coal slurry in coal gasification systems. The MY-type water-coal slurry pump is being used increasingly reliably in applications such as low-pressure slurry pumps on water-coal slurry production lines. Its advantages of safety, cost-effectiveness, and long service life will make the centrifugal water-coal slurry pump the preferred equipment for the production and transportation of water-coal slurry. The system consists of six components: the MY type centrifugal coal slurry pump, the modular shaft seal and seal fluid auxiliary system, the vertical variable-frequency motor, the common base, the measuring instruments, and the control system. The MY coal slurry pump is a single-stage, single-suction vertical centrifugal pump, which can be used in applications such as low-pressure water-coal slurry pumps and slag pool pumps. The entire system utilizes new materials, new manufacturing processes, and high-quality components, ensuring the stability and reliability of its operation. Product features: 1. Wide flow rate adjustment range. The MY-type centrifugal water-coal slurry pump boasts a wide range of adjustable performance parameters typical of centrifugal pumps, with no pressure fluctuations. By using variable frequency speed control, it is possible to precisely adjust the pump’s speed according to the requirements of the process flow, thereby adjusting the pump’s performance to achieve the desired operating conditions. 2. The pump is simple to operate, fast and convenient, and features a high degree of automation. The MY-type centrifugal water-coal slurry pump does not have the inlet and outlet control valves, gearboxes, or other auxiliary components required by piston pumps with hoses and diaphragms. Its operation is controlled by a system based on frequency converters, PLCs, and touch screens, making it fast and convenient while also ensuring a high level of automation. 3. High operational safety: The sealing design features a multi-layer sealing arrangement, and the sealing assistance system ensures proper functioning of the seals, thereby guaranteeing the safe and reliable operation of the pump. 4. Smooth medium transfer: Centrifugal pumps deliver the medium in a continuous, uniform, and stable manner, without the pressure fluctuations and overpressure issues associated with hose, diaphragm, or piston pumps. 5. Low wear: The specially designed structure and the use of corrosion- and wear-resistant materials result in minimal wear. 6. It features low vibration and noise due to a well-designed structure, excellent stiffness and strength, as well as high rotor balance accuracy, all of which ensure low vibration and noise during pump operation. 7. Easy maintenance: The structure of the centrifugal pump for water-coal slurry is simpler than that of the hose-diaphragm piston pump. The pump casing features large doors on both sides, allowing the impeller along with other components such as the pump frame to be removed and installed as a whole from above, without having to move the inlet and outlet pipelines. 8. Low investment and maintenance costs, as well as a small footprint. The MY type centrifugal water-coal slurry pump is independently developed and manufactured by our company, which allows us to offer customers products and spare parts at the lowest prices with the fastest delivery times. The MY type centrifugal coal water slurry pump features a vertical design, occupying less space and thus helping users save a significant amount of area. The supporting systems for the MY-type water-coal slurry pump system include: an automatic pump control system based on PLC and touch screens, as well as electrical control cabinets for frequency conversion control systems ； Sealing fluid assistance system ； Monitoring system. The pump automatic control system based on PLC and touch screen enables automatic operation, while the variable frequency control system can automatically adjust the pump’s speed in order to modify its performance and meet the requirements of the process. The seal fluid assistance system ensures the proper functioning of the mechanical seal ； The monitoring system provides feedback on the operating status of the pump. Operation modes of the MY-type water-coal slurry pump system: The MY-type water-coal slurry pump system has two operation modes: manual mode and automatic mode. The technical level of the MY slurry pump combines the features of slurry pumps and chemical process pumps; it solves the problems associated with transporting high-concentration water-coal slurry in the coal grinding and water-coal slurry transmission sections of gasification units, thus offering great practical value. At present, our company holds multiple new technology patents related to the MY-type water-coal slurry pump.