The heat pump belt type low-temperature sludge drying equipment consists of a heat pump condensation dehumidification component and a mesh belt transmission component. Among them, the heat pump condensation dehumidification components include a compressor, condenser, expansion valve, evaporator, heat exchanger, liquid storage tank, drying filter, electric heating, etc; Mesh belt transmission components include molding machines, reducers, mesh belts, air supply fans, etc.

Principle of heat pump belt type low-temperature sludge drying equipment

The low-temperature drying technology of heat pump is to recover the latent heat of water condensation in the air and reheat the circulating air. There are mainly two cycles, namely refrigerant cycle and air cycle. Among them, refrigerant cycle refers to the conversion of refrigerant into high-temperature and high-pressure gas after being compressed by a compressor, releasing heat in the condenser and entering the evaporator, where it absorbs the heat of water vapor in the drying oven and enters the next cycle; And air circulation is the process of using a heat pump system to circulate humid and hot air from the drying chamber through a fan and filter into a cold water coil. The humid hot air is cooled and dehumidified through a water coil, a reheater, and an evaporator, and heated up by a condenser to become dry hot air, which is then circulated into the drying chamber to continue dewatering and drying the sludge. This cycle repeats.

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

Warm drying and drying

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 heat pump belt type low-temperature sludge drying equipment

① Efficient 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.

② Excellent 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.

③ Automatic 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.

④ Remote 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 heat pump belt type low-temperature sludge drying equipment system

① Efficient energy-saving dehumidification

Compared with traditional drying equipment, it can save more than 50% energy, is highly efficient and energy-saving, and saves customers dehumidification costs. Using heat pump technology for efficient dehumidification, the dehydration rate can reach over 3.5kg per kilowatt hour.

② High 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.

③ Accurate 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.

④ Low 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.

⑤ Safe, 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 heat pump belt type low-temperature sludge drying equipment (water-cooled)

Technical parameters of heat pump belt type low-temperature sludge drying equipment (air-cooled)

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.