Chemical sludge drying machine

Sludge drying machine consulting 13812107199 Product Description: sludge drying apparatus is a use of wedge hollow blades and the inner wall of the cylindrical device principle of heat conduction, and this type of dyeing wastewater sludge generated between the paste or slurry The sludge is indirectly heated, so dyeing sludge sewage sludge or sewage sludge treatment yields reached dehydration and drying, to reduce the volume and utilization, turning waste into treasure, to avoid secondary pollution, is the printing and dyeing sludge processing the most ideal drying equipment. Sludge drying equipment using special wedge-shaped heat stirring blades, with high heat transfer efficiency and heat transfer surface self-cleaning function. The structure is arranged in the hollow shaft dense wedge hollow blades, large heat transfer area per unit effective volume of the heat medium can be steam, oil and other carriers, the use of temperature 18-230 ℃. Since the life of sewage sludge or dyeing wastewater sludge belongs paste or slurry, sludge drying equipment design, the use of wedge-shaped blade heat transfer surface, paste or slurry of mud and wedge-shaped blade surface of the continuous relative movement one kind of scour, therefore, whether the sludge granules, powder, paste, paste, wedge-shaped heat transfer surface equipment has better self-cleaning function. Sludge drying equipment in addition to the wedge-shaped hollow blade shaft, its shell is made of a circular bottom, the upper rectangular hollow shell arranged 2-4 root stirring shaft, a seal between the shaft and the housing cover. Upper lid prevents dust leaking material, while wet steam can be collected. In order to ensure the drying effect, in the discharge port is provided to ensure that the material level baffle material level height, the heat transfer surface covered by the material and give full play to the effect of heat conduction. Heat transfer medium sludge drying equipment (steam or thermal oil) through shaft rotary joint into the hollow shaft of dense blades, housing jacket and the hollow shaft while heating the material. Sludge drying machine features: 1, low energy consumption, the use of indirect heating, not a lot of air to carry heat away, dryer shell is made of composite insulation material insulation, low energy consumption. 2, within the effective volume of sludge drying equipment has a large heat transfer area, thus shortening the processing time, equipment smaller, it is effective in reducing the footprint and architectural space. 3, adaptability range: One can use different media (steam, thermal oil). Second, for all types and nature of dewatered sludge, we can deal with heat-sensitive materials, but also require high-temperature processing of materials processing. 4, environmental pollution: the use of indirect heating, the heating medium does not carry precipitates dust. Only precipitated sludge inside the evaporation of wet steam. 5, the equipment is reliable, low maintenance costs: As low speeds, wear a small, low maintenance costs, low labor intensity. 6, easy to operate: just press the button for one, the entire device is initiated. 7, sufficient heating time can effectively eliminate viruses and bacteria, to meet environmental protection standards. 8, after drying sludge containing solid rate (up to 90%). Sludge drying parameters: 1. No more than the sludge moisture content of 80-86% before drying. 2. After drying the moisture content of approximately 10-15%. 3. The change in volume: volume after drying is reduced 4-5 times. 4. Yield: 10-20 tons / day of water containing more than 80% of the sludge. After about a tonne of sludge drying can produce 0.13 tons of powdered and some 5mm granular sludge dry powder. 5. dried sludge powder low calorific value of about 2000-2600 kcal. 6. electricity 15KW / h 7. machine body size: 6500 × 2000 × 1800 (L × W × H) after the economic value of a sludge drying, incineration of sludge by drying after its heat value of about 2000-2600 kcal, two tons of sludge drying can be the equivalent of one ton after 4500 kcal coal can be mixed with coal-fired combustion in the boiler, a ton of dry sludge to produce one ton of steam. Dried sludge and coal blending ratio of 100-200 kg per ton of sludge added. 2, brick mud brick in clay can be added in a mass ratio of 1:10, the intensity is quite ordinary brick, and has a certain amount of heat in the process of firing the brick can be spontaneous combustion, increase the heat. 3, manufactured under alkaline conditions biochemical fibreboard, heating, drying, pressing after a series of physical and chemical changes (denaturation globulin), this activated sludge formed denaturation resin (fibrin glue), so that fiber bonding together, pressed sheet. 4, cement building materials as an admixture of accessories. 5, since the landfill composting landfill management in place, easy to produce secondary pollution, together with the national development of relevant standards and technology policies sanitary landfill, the landfill for printing Sludge moisture content less than 60% of the prescribed transverse Cut greater than 25KN / square meter. In fact, the dewatered cake moisture content greater than 80%, the use of direct landfill approach has been limited by current legislation does not allow direct landfill, countries in this regard have been stepped up enforcement. Composting the organic sludge containing nitrogen, phosphorus and potassium, it is essential for the growth of crops fertilizer ingredients. Activated Sludge organic ingredients crude protein or globulin is a good soil conditioner, stable nature of the sludge can be used as fertilizer, with use value agriculture. But up to now, printing and dyeing sludge composting in the community still can not accept, do not get promoted. Sludge drying process: Feed: screw conveyor or belt conveyor to a moisture content of 80% -86% of the post-filter press sludge dewatering or drying machine to the inlet. Heating: steam or thermal oil as a heat source for heat exchange, heat carrier (steam or thermal oil) at a temperature of 180-230 ℃, the heat carrier is introduced into the hollow of each dryer housing and the drive shaft, blades, etc. All sludge is heated metal surfaces in contact heat exchange. Drying: heated metal surfaces in contact with the sludge evenly heating the sludge in the sludge evaporation of water, along the axial length of the dryer, the water vapor will evaporate through constant evaporation and low evaporation rate in two stages; sludge drying experience plasticized, broken plastic, blocking, granulated four steps, the temperature rose rapidly sludge stabilization, rapid upward trend.