With the rapid development of the world plastic industry, more and more plastic materials are used widely than before. As the increasing quantity application of plastic, it brings people convenience as well as serious pollution problems. At present, the waste plastics mainly are solved by landfill, burning and recycling. However, both of landfill and burning cause the secondary pollution, and the scope plastic recycling is very limited. For example, the waste plastics produced by household garbage and paper-making factory, which can not be recycled. With the increasing price of International crude oil, waste plastic pyrolysis plant project report is closely watched by different countries in the world.
Waste plastic usually takes the pyrolysis technology to do recycling usage. Pyrolysis technology is the industrial process of breaking down large molecules of plastic/tires into smaller molecules of oil,gas and carbon black.The pyrolysis technology of waste plastic not only no pollution to the environment but also recycle the energy effectively.That is to say, plastic pyrolysis technology is the inverse process of manufacturing plastic products by crude oil materials.Our doing company add different catalyst to the different plastic materials for pyrolysis. Compared with the domestic pyrolysis technology,we improve the oil yield and quality.
Because the plastic is made of different raw material, the pyrolysis process is also a little different. PE,PP and PS are decomposed at 300-400 centigrade degrees. But the PVC is decomposed at two stages which are 200-300 and 300-400 centigrade degrees. The PVC may release HCL and hydrocarbon,and then break down step by step. Due to the corrosivity of HCL,and it will effect the pyrolysis catalyst, life span and the oil quality.Then the pyrolysis technology requests that the PVC should be less than 30% of the waste plastic.
Pyrolysis Process Of Waste Plastics
The molecules of different plastic is very different,so the final product and oil yield is different.Generally,there are four kinds of final pyrolysis products: hydrocarbon gas (C1-C5), oil (gasoline is C5-C11,diesel oil is C12-C20,the heavy oil is C20), paraffin and coke.
|Working Method||Batch||Semi-Continuous||Fully Continuous|
|Raw Materials||Waste Plastic, Tyre, Rubber, Oil Sludge|
|Pattern||Horizontal & Rotary|
|Heating Materials||Charcoal, Wood, Fuel Oil, Natural Gas, LPG, etc.|
|Floor Area (L*W*H)||30*10*8m||30*10*8m||40*10*8m||45*25*10m|
|Operating Pressure||Normal Pressure||Constant Pressure|
|Cooling Method||Water Cooling|
|Life span||5-8 Years|
1. Polyvinyl chloride PVC, polyethylene: PE (such as films, bottles, electrical insulating materials, handbags, pipes, drums, bottles / calcium bottles, daily necessities, etc.) pure plastic has oil yield is about 95%.
2. Polypropylene: PP (such as films, plastic rope, tableware, pots, barrels, furniture, bags, caps, car bumpers, etc.) of pure oil yield 90%.
3. PS (such as electrical appliances, stationery, cups, food containers, appliance housings, electrical fittings, foam products, toys, etc.) of pure oil yield at 90%.
4. ABS plastic: 40%.
5. Pure white plastic sheeting: about 70%.
|1||Fuel oil||• can be sold directly.|
|• Reprocessed into diesel and gasoline by use oil distillation machine.|
|• can be used as fuel.|
|2||Carbon black||• can be sold directly.|
|• Reprocessed into high quality carbon by the carbon black grinding equipment.|
|• make carbon brick by briquetting equipment.|
|3||Combustible gas||• can be as fuel heating the reactor.|
Features of Beston Plastic Pyrolysis Machine
(1)High quality: all of our plants have passed CE, ISO, SGS certification.
(2)High oil output: unique catalyzer and condenser which can increase oil yield by another 5% and improve oil quality.
(3)High efficiency: the reactor of the plant is 360-degree rotating and its rotate speed can reach 0.4-0.8 turn/minute. This special design makes the bottom of reactor get heated evenly, which can improve the pyrolysis efficiency.
(4)Safe: our plants are equipped with mature safety devices, such as alarm for over temperature and pressure, auto pressure releasing system, extra gas recycling system and fire fighting device, which will guarantee safety in production.
(5)Energy saving: by the extra gas recycling system, the gas generated in the pyrolysis process can be reused, which will save energy.
(6)Environment friendly: in the dedusting system, three steps are used to dedust the extra gas. More than 95% of the dust would be removed. The released gas is pollution-free and can be discharged into the air directly.
(7)Longer service life: the technology of avoiding the reactor of being burnt through by reforming the furnace, which will lengthen the life span of the main reactor for 2 to 3 years. The service life of our plant can reach 5-8 years.