Sludge low-temperature drying equipment is a treatment technology that uses the generated dry air to circulate in the system while providing heat energy to indirectly heat the sludge, combining heat transfer, mass transfer, and sludge agitation to accelerate the efficiency of sludge drying. The moisture content of the plate and frame filter press, belt filter press, screw dehydrator and centrifugal dehydrator can be reduced from 80% to 85% to dried mud with a moisture content of less than 10%. This technology can reduce the volume of sludge by one-fourth, only consumes electric energy, and does not require other auxiliary energy sources. The energy consumption is 1/3 of conventional electric heating or direct heating drying equipment. However, if the customer has waste steam or waste hot water above 70°C, the waste heat can be used as a thermal subsidy to greatly reduce the energy consumption of sludge drying. The system does not have special requirements for external humidity and temperature, and the entire system can continue to operate with high efficiency.
In the process of dehumidification and drying, this product does not emit any waste gas. At the same time, the latent heat and sensible heat of water vapor are recovered, and the recovered heat is reused to supplement the heat required for sludge drying and heating, so it can greatly reduce the energy of sludge drying. Consumption.
The sludge dehumidification and drying machine uses a dehumidification heat pump to condense and dry the sludge with hot air circulation:
1. Dehumidification and drying is the recovery of latent heat of water vapor and air sensible heat in the exhaust air. There is no waste heat emission during the dehumidification and drying process. 90% of the heat supplied by the traditional sludge thermal drying system is converted into exhaust heat to lose water vapor latent heat and heat. Sensible heat of air)
2. Dehumidification and drying are composed of two parts: the conveyor belt and the heat source equipment part.
3. The heat pump drying unit adopts the reverse Carnot cycle principle and uses a small amount of electricity to drive the compressor to do work, so that the water vapor in the indoor air is cooled by the evaporator to condensate water, discharged outside, and then passed through the condenser to increase the temperature. The heated air can continue to absorb the moisture in the material because it is not saturated, and finally make the material reach the ideal dryness.
4. The normal operation of the drying room and heat source equipment is realized through the self-developed microcomputer automation control system. According to the actual process requirements of the drying room, the temperature in the drying room can be controlled by the intelligent control unit during the start and stop periods, so as On the basis of saving time, effort and worry, improve the quality of drying.
Adopt heat pump heat recovery technology, closed drying mode without any waste heat emission;
80% wet mud per ton is dried to 20%, and the comprehensive power consumption is 195kwh;
Each 1 kilowatt-hour of electricity can remove 30 kg of water and the dehumidification performance ratio is 1:30kg.H₂O/kw.h);
80% wet mud per ton is dried to 60%, and the comprehensive power consumption is 125kw.h;
The low-temperature drying process below 80°C is fully suitable for the safe operation of the sludge drying system in the municipal, printing and dyeing, and paper industries, without potential explosion hazards, and without nitrogen flushing operation;
The oxygen content in the sludge drying process is <12%; the dust concentration is <60gm3, and the particle temperature is <70℃;
There is no "sticky phase" stage (about 60%) in the drying process of urban sludge; the dry material is granular and there is no danger of dust;
The discharging temperature is low (<50℃), no need to cool, direct storage.
Adopt low temperature (40-75℃ fully enclosed drying mode, no odor, no need to install complex deodorizing device;
Adopting low-temperature drying process, the amount of H2s and NH3 precipitation is greatly reduced;
Condensate water (contaminated water mixed with water) is simple to set up (or directly drained), which saves the cost of condensate water treatment in the drying process.
There is no loss of organic content in the drying process, and the dry material has a high calorific value, which is suitable for later resource utilization;
The capacity is reduced by 67%, and the weight is reduced by 80%, which can save a lot of later transportation costs;
Suitable for sludge drying with 83%-50% moisture content
The pasteurization method is adopted for low-temperature heat sterilization, and the drying temperature is above 70℃ and the time can reach 90mn-120mn, which can effectively sterilize more than 96%.
Negative pressure operation
When the fan side of the unit is on the side of the drying line, the inside of the box is in a negative pressure state. Prevent the gas from leaking out of the box.
Adjustable temperature setting freely
The drying time and temperature can be set freely, and the air outlet temperature of the unit can be set freely between 65°C and 80°C to ensure the drying quality.
Fully automatic operation saves a lot of labor costs; the water content of the material can be adjusted arbitrarily (10%-50%).
It adopts corrosion-resistant materials such as stainless steel, and the heat exchanger is treated with electroplating and anti-corrosion, which has a long service life.
Break through the high temperature technical bottleneck of the pump dry, superior high temperature performance, and solve the winter problem of air source heat pump dryer frosting and poor high temperature performance);
Adopting four-effect dehumidification patented technology, medium heat exchange, cooling, humidity and temperature gradient utilization technology, comprehensive dehumidification performance ratio (SMER) 2.8kgH2◎kwh or more
Break the technical bottleneck of traditional dehumidifiers and ordinary heat pump dehumidification dryers;
Solve the technical problems of poor dehumidification performance of traditional dehumidification equipment under the conditions of high temperature and low humidity, even the idling compressor does not remove water);
According to the different moisture content of the mud cake, different molding technologies can be used to reduce the drying time of the mud cake and provide the comprehensive energy efficiency of the drying system.
a. The sludge is statically spread, and there is no mechanical electrostatic friction with the contact surface, and the service life is more than 10 years;
b. It can directly dry the sludge with a moisture content of 83% to 10%, without the need for segmented disposal (such as: plate and frame filter press + thermal drying, thin layer drying + belt drying, etc.; single-chip computer + touch screen intelligent control, Can realize remote centralized control;
c. No fragile and consumable parts, easy to use and manage;
Address: No. 61, Fenghuang East Road, Hailing District, Taizhou City
Equipment sales: 13852655669 Ms. Sun
Solution: 13852060015 Mr. Huang
After-sales service: 0523-82256069