显示标签为“pyrolysis process”的博文。显示所有博文
显示标签为“pyrolysis process”的博文。显示所有博文

2015年2月27日星期五

What is the differences between diesel fuel,gasoline,kerosene,etc?

Pyrolysis plant common problems
Doing Group is specializes in manufacturing waste tires pyrolysis/recycling machine. The pyrolysis plants can  extract crude oil from waste tire/tyres, scrap plastic or rubber which are polluting our environment if we ignore. Fortunately, we can do well in solving the "Black Contamination" and "White Pollution" with waste tires pyrolysis/recycling machine and getting available things, such as crude oil, carbon black, steel wire, etc. Now let us see the differences between disesel fule, gasoline, kerosene.
The first four chainsCH4(methane),C2H6(ethane),C3H8(propane)andC4H10(butane)are all gases, and they boil at -107, -67, -43 and -18℃,respectively.
The chains in the C5,C6 and C7 range are all very light, easily vaporized, clear liquids called naphthas. They are used as solvents dry cleaning fluids can be made from these liquids, as well as paint solvents and other quick-drying products.
The chains from C7 through C11 are blended together and used for gasoline. All of them vaporize at temperature below the below the boiling point of water. That’s why if you spill gasoline on the ground it evaporates very quickly.
Next is kerosene, in the C12 to C15 range, followed by diesel fuel and heavier fuel oils(like heating oil for houses).Next come the lubricating oils. These oils no longer vaporize in any way at normal temperatures. For example ,engine oil can run all day at 120℃ without vaporizing at all.
Chains above the C20 range form solids, starting with paraffin wax, then tar and finally asphaltic bitumen, which used to make asphalt roads.

pyrolysis oil
Pyrolysis oil

2015年2月10日星期二

What is waste tyres pyrolysis?

FAQ of pyrolysis plant /
Waste tyre pyrolysis is a special pyrolysis technology case of thermolysis, and is most commonly used for organic materials, being, therefore, one of the processes involved in charring.
In general, pyrolysis of organic substances produces gas and liquid products and leaves a solid residue richer in carbon content. Extreme pyrolysis, which leaves mostly carbon as the residue, is called carbonization.
The pyrolysis process is used heavily in the chemical industry, for example, to produce charcoal, activated carbon, methanol, and other chemicals from wood, to convert ethylene dichloride into vinyl chloride to make PVC, to produce coke from coal, to convert biomass into syngas, to turn waste into safely disposable substances, and for transforming medium-weight hydrocarbons from oil into lighter ones like gasoline.
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Pyrolysis technology

2015年1月12日星期一

waste tire pyrolysis plant

Basic understanding about Doing waste tire pyrolysis plant

Pyrolysis recycling plant products
Basic understanding about Doing waste tire pyrolysis plant:

Waste tire pyrolysis plant, also called waste recycling/deposing/refining machine, is used to dispose municipal solid wastes. Many people feel confused what is pyrolysis? In fact, pyrolysis is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen (or any halogen). The word is coined from the Greek-derived elements pyro “fire” and lysis “separating”. Pyrolysis scrap tyre and plastic is a new waste recycling solution compared to the traditional ways.

Pyrolysis of scrap tyres can separate solids in the tyre, such as steel and carbon black, from volatile liquid and gaseous compounds that can be used as fuel. Pyrolysis can also be used to produce liquid fuel similar to diesel from plastic waste, the diesel generates from plastic waste contains higher cetane value and lower sulphur compare to traditional diesel. Using pyrolysis to extract fuel from end-of-life plastic is environmentally preferable to landfill and buring. It can erase pollution, save land and decrease disease spreading.
pyrolysis plant
Doing waste tire pyrolysis plant
- See more at: http://www.doinggroup.com/index.php?u=show-552.html#sthash.5Iu2HF8b.dpuf

2015年1月10日星期六

Waste Management of Waste plastic to oil machine

Waste plastic to oil machine manufactured by DOING company is suitable for waste plastic recycling, waste tyre recycling, just separate the waste tyre and waste plastic, if the first batch for waste tyre recycling, after finish the processing, just feed waste plastics for the second machine, one set of machine is enough for two kinds of raw material. Since many people are familiar form waste tyre recycling, this passage mainly introduces the Waste plastic to oil machine operation.
plastic to oil
Waste plastic to oil machine
Basic infromation about Waste plastic to oil machine:

a>Heating material: coal/wood/fuel oil/natural gas, any one of them can be used as heating material.
b>Machine cover area: usually 500 square meters
c>Reactor material: Q245R Boiler plate


Waste plastic to oil machine operation process:


1. Loading waste plastic is so different with the loading waste tires. Loading tires 10 tons one time can fully inside the reactor. But loading waste plastic is continuous, as the plastic melt so fast so we need load 4-5 times to load the reactor then can load fully for 12 tons. Loading while the reactor working. If the plastic is wet, then it needs 7 hours. 4 hours needed if the plastic is dry. Why, because if the plastic is wet, when pyrolysis first the water become water vapor to come out then plastic begin to melt. That is why wet plastic need longer times. So the reactor first time like the dryer first dries the plastic then pyrolysis.
2. After loading fully, if the plastic is wet it will generated oil gas after 6-8 hours, then the oil gas coming out will last 15-28 hours.During the heating period, the oil gas temperature (titse is an titsmal couple to test the oil gas temperature) need to control 270-300 Celsius degree, which is the best temperature. But if the temperature is lower than 270, u will be easy to control the oil quality, but it needs longer times. If u did not required high oil quality then u can use the high temperature (higher than 300) this will be quickly to finished the process.
3. At same time, titse are some gas (CH4, C2H6, C3H8, C4H10 and H2) cannot be cooled under normal pressure; they will be recycled back to combustion system to burn as energy.
4. We can discharging carbon black after the oil gas running out and 2 hours cooling down.
5. After this then you can begin the next batch, no need to wait for the reactor become cool as we use machine loading the waste plastic.

End Products usage:
 

a> Crude oil: Oil from this machine can be used as industrial fuel for burning.
b>Carbon black: First,Carbon black from this machine is crude. You can sell it to the brick factory as internal combustion.

2015年1月6日星期二

What is the newest pyrolysis technology?

What is the newest pyrolysis technology?

 

Plastic to oil pyrolysis technology

Newest pyrolysis technology:
Waste plastic usually takes the pyrolysis technology to do recycling usage.Pyrolysis technology is the industrial process of breaking down large molecules of plastic/tire 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,pyrolysis technology of plastic 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.Comparing with the domestic pyrolysis technology,we improve the oil yield and quality.
  1. 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.
  2. 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.

plastic oil

Different plastic to oil with pyrolysis technology

Oil yield of some typical plastic:

PE95%
PP90%
PS90%
ABS40%