Product Introduction

Present Development situation of coal slurry drying
Coal slurry is a kind of wastes which must be discharged by coal enterprises. Generally speaking, coal slurry refers to semi-solid products formed from coal powder with moisture. Coal slurry is a by-product produced during coal production process. According to different varieties and forming mechanism, the quality of coal slurry will be very different and value in use also varies. Coal slurry is the main source of domestic solid wastes. Owing to its high moisture and low thermal value, it is hard to realize industrial utilization of coal slurry, therefore, for a long time, power users always refuse to utilize coal slurry which is mainly used by home application and local distribution. Since reforming and opening-up in china, domestic economy has got greatly developed. Coal output in china has ranked first among all over the world. Market situation is also transformed to buyer’s market from seller’s market. Owing to the awareness improvement of environmental protection, there is an increasing demand for clean coal. The depth and width of coal processing are greatly improved. It has becomes an urgent problem to comprehensively utilize coal slurry. Comprehensive utilization of coal slurry is a necessary method to establish a resource-saving and environmental friendly society. It is an important approach to develop circular economy and clean production to reutilize coal slurry.
Taida efficient coal slurry drying solution
Coal slurry dryer is specially developed and designed for various qualities of coal slurry. It can strictly control the temperature, pressure, air volume and rotary speed. Through special lifting device, cleaning device and crushing device, this dryer can effectively solve wall-sticking problem during drying process. Advantages of coal slurry dryer: downstream drying process can fully realize heat exchange and transition. Drying and thermal efficiency can be improved. Emission concentration of exhaust gas and dust can be reduced. This dryer can definitely reach energy-saving and environmental protection aim. This drying system can dry coal slurry in large batch. With intelligent and automatic control system, handling capacity of single dryer can reach to 300 to 2000T/D. Moisture content can be reduced to 12±2% from 30±5%. Lower heating value of coal can be increased by 1000 to 1500 kcal. Diameter of dryer’s cylinder ranges from 1.9 meters to 3.4 meters and length ranges from 15 meters to 30 meters. 

Product Superiority

1. Special coal slurry dispersing and feeding equipment can effectively solve uneven, discontinuous and unstable problem.
2. After continuous development, feeding process is more even and smoother. Heat-resistant and reliability will be greatly improved.
3. Flexible combustion equipment, furnace body and furnace design can achieve higher energy utilization efficiency.
4. Glass steel and stainless steel are applied for dust collecting system to solve abrasion and corrosion problem.
5. Successful application of bag filter provides a brand new idea for dealing with high-temperature and high-moisture exhaust gas.
6. Matched with advanced configuration and reliable electricity control cabinet, automatic level is greatly improved.
7. The application of Television supervisory system makes production operation, control and management more flexible, specific and simple.
8. Special feeding seal equipment can guarantee thermal efficiency and flexible transportation of raw materials.
9. Special thermal insulation system can make cylinder sealing technology more efficient and beautiful. 
 

Technical Process

  Raw materials are sent to dispersing feeder by loader. Then, raw materials will be sent to belt conveyor. Then, materials will be sent to screw propelling device. Then, raw materials will be led to inclined lifting materials zone. With inclination and rotation of cylinder, materials will be elevated to top of cylinder. Then, materials will be dropped down and forms a material curtain. Hot flue gas which enters the dryer will pass through wet materials and form heat conduction and heat transfer. Partial moisture will be evaporated by preheating process. Meanwhile, the temperature of flue gas will drop quickly. After being preheated, wet materials will middle-temperature drying stage where majority of moisture is evaporated. Raw materials will continuously mix with materials and flue gas until the final moisture reaches to appointed standard. After meeting moisture demand, final products will be discharged out of the drying drum. After heat exchanging, exhaust gas with majority of vapor and dust will be primarily dealt with by primary cyclone dust collecting system. Then, exhaust gas will be elaborately dedusted by secondary bag filter or wet dust collector. The dust content of exhaust gas after purification is controlled at below 50mg/m³, which can definitely meet environmental requirements. 

Achievements&Technology

Product Case

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