The waste heat type closed sludge low-temperature drying equipment is composed of waste heat condensation and dehumidification components and mesh belt transmission components. The waste heat condensation and dehumidification components include hot water coils, cold water coils, finned reheaters, three-way proportional control valves, etc; Mesh belt transmission components include molding machines, reducers, mesh belts, air supply fans, etc.

Principle of waste heat closed sludge drying system

Convert the waste heat of flue gas or steam condensate, steam, etc. into hot water at 85-90 ℃ through a heat recovery system, and heat the air of the line body through a heat exchange system to obtain dry hot air. After passing through the mesh belt, it is converted into humid and hot air with a humidity of over 50% and a temperature between 40-60 ℃. The humid and hot air is circulated through the fan into the cold water coil, where it exchanges heat with cooling water at around 33 ℃. The humid hot air reaches the dew point temperature, and the water vapor condenses into water and is discharged. The dry air exchanges with hot water at 90 ℃ again, repeating the cycle. The entire process circulates air in a closed space without emitting exhaust gas, meeting national environmental protection requirements.

Process flow diagram of waste heat belt type low-temperature sludge drying equipment

Drying temperature: 45~56 ℃ (return air)/65~80 ° C (supply air)

Wet mud usage range: 40% -82% (adaptability varies depending on moisture content)

Dry material moisture content: Variable frequency adjustment, moisture content (10% -60%) (the adjustment range of dry material moisture content varies depending on the moisture content of the sludge)

Note:

Data source: Company laboratory data and actual customer usage data. The data may vary depending on the specific usage environment. The images, parameters, and data involved are for selection reference only. The actual ordered products shall prevail.

Technical advantages of waste heat belt type low-temperature sludge drying equipment

①Integrated Energy Application Technology

In response to the technical bottleneck of high moisture content and weak reduction ability in traditional drying methods, the system adopts multi-stage energy comprehensive application technology, cold and hot balance treatment and utilization. Unlike open drying equipment that continuously discharges moisture and heat, and continuously provides high temperature heating, the system has better energy efficiency.

②Efficient and energy-saving costs worry free

Multiple inventions and innovative designs, high efficiency and energy saving, can dry wet mud with a moisture content of 80% to dry mud with a moisture content of 10% per ton, with a comprehensive power consumption as low as 50kWh.

③Efficient and stable operation

Adopting PLC+electronic expansion valve, real-time sludge status is recognized through digital fuzzy recognition, precise control of cooling distribution mode, optimization of system circulation flow, and ensuring continuous, efficient, and stable operation of the internal drying environment of the system.

④Excellent anti-corrosion performance

Multiple joint anti-corrosion protection measures such as isolation and protection of refrigerant components, use of corrosion-resistant materials, coating with anti-corrosion paint, etc., enable the sludge drying system to have excellent anti-corrosion performance and provide users with better solutions.

⑤Automatic blowing and dust removal

The system timed controls the pulse blowing valve for automatic blowing, and the filter cartridge adopts a high-density polyester fiber filter screen with good filtering effect. The cleaning force and cleaning gas consumption can meet the cleaning needs under various operating conditions.

⑥Remote monitoring technology

Through the operating system, it meets the needs of users for remote monitoring and supervision, intelligent control of devices, and in-depth data mining, achieving efficient operation and creating value for enterprises.

Characteristics of waste heat belt type low-temperature sludge drying equipment system

①Utilize waste heat source

Based on the existing heat source methods of users, such as steam condensate, flue gas, solar energy, etc., combined with the price of heat sources, we provide users with suitable equipment solutions, committed to saving sludge disposal costs and expenses for users.

②High degree of sludge reduction

Through comprehensive treatment, sludge can be reduced by more than 80%, with a high degree of sludge reduction, which facilitates the later resource utilization of sludge.

③Accurate drying

Users can freely set the drying time and temperature to meet their different drying moisture content requirements, achieving precise control of the drying degree.

④Low temperature drying discharge can be directly stored

The sludge drying system performs drying and dewatering under low temperature conditions. The discharged temperature of the dried sludge is below 48 ℃ and can be stored directly without cooling.

⑤Safe, environmentally friendly, and odorless emissions

The system adopts a closed drying design, fully enclosed drying operation, safe and environmentally friendly, no dust and explosion hazards, no odor or exhaust gas emissions during the process, low COD of condensed water, simple treatment, and no need to spend high costs to purchase a deodorization system. It can be directly installed in the factory area for centralized treatment.

Technical parameters of waste heat belt type low-temperature sludge drying equipment

Note:

Data source: Company laboratory data and actual customer usage data. The data may vary depending on the specific usage environment. The images, parameters, and data involved are for selection reference only. The actual ordered products shall prevail.