Envoland waste recycling plants


Waste plastic to fuel conversion plant

Pyrolysis is the thermal decomposition of organic material at elevated temperatures in the absence of gases such as air or oxygen. The process, which requires heat, produces a mixture of combustible gases (primarily methane, complex hydrocarbons, hydrogen and carbon monoxide), liquids and solid residues.


“We can design to hot melt previously crushed or regrind waste plastic to about a one inch size particle (smaller the size - better the efficiency).  ”

Waste Plastic Pyrolysis System

Envoland has designed a set of technologies based on the features of waste macromolecular materials to convert biomass and plastic wastes into renewable fuels.

The equipment consists of 5 parts:

  • Auto feeder
  • Catalytic cracking & pyrolysis unit
  • Heat exchange & cooling unit
  • Fractional distillation unit
  • Heating devices & electric control unit

A conveyor is used to feed raw materials (large pieces of waste material should be broken up in advance), the input and output will be operated at the same time.

Oil products:
         Gasoline: Octane number 90 ~ 93
         Diesel:    Premium  ~ Super

Envoland waste plastic to fuel conversion plant Pyrolysis flow chart

Envoland Pyrolysis Plant Flow Chart

(if you are unable to view YouTube videos click here)

Envoland Landfill-PyrolysisThe process is used heavily in 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 and biochar, to turn waste into safely disposable substances, and for transforming medium-weight hydrocarbons from oil into lighter ones like gasoline.

These specialized uses of pyrolysis may be called various names, such as dry distillation, destructive distillation or cracking.  Pyrolysis is also used in the creation of nanoparticles, zirconia and oxides utilizing an ultrasonic nozzle in a process called ultrasonic spray pyrolysis (USP).Envoland Waste-processed

Retrieving Plastic Waste Material ( LDPE, HDPE, PP, PS...), Waste Tires, Biomass Waste from Landfills or MSW site.  It can also apply to recycle waste plastic bags, waste oil, Lignite, brown coal and MSW biomass waste (agricultural waste and refuse, wood waste, wood-based residues, energy crops short-rotation crops, sweet sorghum, …etc.).

We can design to hot melt previously crushed or regrind waste plastic to about a one inch size particle (smaller the size - better the efficiency. 

After crushing, the waste plastic is then sent to the pyrolysis plant.

Waste Plastics, Biomass Waste Automatic Continuous Pyrolysis Fuel Plant

The Envoland plant needs to be installed in an industrial zone and has to meet all the advanced countries’ environmental protection emission standards. The pre-screening waste plastic, biomass waste is converted by pyrolysis process and conversion rate is about 70 percent (cracking and refining the burning oil, unleaded petrol, diesel, gas and other valuable co-products such as carbon black, crude asphalt, coke valorization and construction aggregates ).

Regarding the biomass syngas obtained from pyrolysis process not only can be utilized for internal combustion engine for electric power generation, but also can be utilized for boiler or hot-blast furnace to produce steam or hot air for drying.   The gas also can be lead to tornado type dust collection tank (with stainless quality ) then send to gas burner generator system to generate the power.

Power: 0.5M-5M Watt depending on upon quantity.

Main Features:Envoland  Waste-processed-01

    1. Removes smells
    Eliminates oil product smells by utilizing special cleaning filters and detergents.
    2. Residue management
    Envoland’s technology can manage residue particle sizes over 1000 mesh and can be recycled as fuel or used as filler. 

    3. Product index:
    Diesel: sulfur50ppm, Hexadecane (cetane)2%, Distillation 95% vol point 340 .

    4. Auto feeder
    The raw material is fed  continuously by a variable pitched screw; automatic  compression, exhausting, dehydrating, and pre-heat can be carried out during this feeding process.  The small waste pieces of raw materials does not require to be broken up or cleaned.

    5. Residue processing unit
    Residue processing at high temperature (300℃) enables continuous production possible.

    6. Gas Recovery system
    Safe, reliable, stable, and uncomplicated structure.  

    7. Auto feeder
    The raw material is fed continuously by a variable pitched screw; automatic compression, exhausting, dehydrating and pre-heat can be carried out during this feeding process.
    The small waste pieces  of raw material does not require to be broken up or cleaned.

    8. Highly Efficient Catalyst:
    Many catalytic reactions are involved in this sophisticated process.  The exact calculation and control on the speed rate and feed ratio prevent catalysts from being damaged by toxic pollutions.  Envoland have optimized activity, selectivity, strength, and anti-pollution of catalysts used.

    9. Innovation :      
    Catalytic pyrolysis occurs at low temperature (< 280℃) This offers a very high yield
    and conversion with fuel content greater than 80% and gas less than 5%.


Waste Plastic Pyrolysis Production line:


(if you are unable to view YouTube videos click here)


We can provide various capacity pyrolysis plants -  daily processing feed stock of 10 tons, 20 tons, 30 tons, 50 tons or 100 tons continuously.

Pyrolysis Major Systems:

Envoland waste plastic to fuel conversion plant

      • Feeding System
      • Feed Stock Preheating System
      • Pyrolysis System
      • Catalytic Cracking system
      • Preheating Condensing System
      • Fuel oil Heat Exchange System
      • Fractionating System
      • Fractionating Condensing System
      • Fractionating Precipitation system
      • Air, Water Purify System
      • Piping System
      • Electrical Control System

This equipment has a very low maintenance requirement - no cleaning or sorting of raw materials which reduced labor cost, and uses an automatic conveyor feeding system fully automated operation, high-efficiency and 24 hours operating capability. Site safety, closed and clean production process. No second pollution. Wide range of raw materials, high conversion, average conversion rate > 70%, Diesel up to 90%.  While one side feeds the waste plastic, the other side is supplying oil and de-slugging.


Best Quality Oil:

 Envoland Fuel-Produced

  • Excellent volatility:
  • Guaranteed easy engine start in winter - not easy to produce vapor lock and can be fully burned. 
  • High Anti-explode Capacity :
  • Octane value conforms to governing statutes; guaranteed that the engine will operate normally in high anti-explode capacity and utilizes full fuel efficiency.
  • Excellent Stability:
  • Extended storage periods - a minuscule amount of gelatinous material.
  • Excellent Corrosion Resistance:
  • Will not corrode containers/tanks and car parts either in storage or use.


Environmental protection

  • Prevent soil degradation and water pollution by suppressing the formation of sulfides, nitrides and oxidants.
          • To Prevent global Warming by reducing CO2 emission
          • To protect our declining petroleum resource
          • To create new business opportunities
          • To contribute to the eco-environment

All plastics are composed from crude oil - Carbon (C) and Hydrogen (H). Petroleum is composed of two components: hydrocarbons and the other non-hydrocarbons - Oxygen (O), Sulfur (S) and Nitrogen (N). The composition of petroleum hydrocarbons, the chemical polymer, namely, Carbon and Hydrogen is the major component of plastic - plastic is produced from petroleum. Waste Plastic under pressure and catalytic cracking produces fuel and can be used as a fuel source. Under certain temperature conditions the plastic macromolecular chains are converted to small molecular chains (which is a hydrocarbon compound) and those small molecular compounds contain C4 ~ C20, this compound is a component of petrol, coal oil, and diesel. Under this catalytic pyrolysis process the wax oil and heavy oil are removed.

Pyrolysis Process

The shredded plastic waste is automatically and continuously fed into the pre-heating process; the plastic waste melts at this stage, PVC as it has a low melting point will crack first and the HCL will be removed in this process.

After preheating, the melted plastic is fed into the continuous cracking furnace. The cracking furnace has a solid mesh and is cyclically heated to ensure the waste plastic is completely converted by the pyrolysis reaction. Any residues are removed automatically from the cracking furnace to ensure nontoxic operation.

The pyrolysis gas fractionation and subsequent cooling from the fractionation tower, produces light and heavy oil fractions and a small amount of non-condensable gas. The light oil fraction (light gasoline) is separated and the heavy oil fraction is fed into the re-boiler and re-processed by secondary catalytic cracking. This process produces a high-quality automotive diesel. The non-condensable gas from this purification system is used as the fuel to heat the pyrolysis system and the whole process is self-sufficient. The process by the purification system achieves all developed countries’ emissions standards.

Envoland Pyrolysis-plant

Equipment technique:

The plant uses continuous reacting bed pyrolysis technology - the shredded recycled waste plastics is fed continuously into the cracking furnace to increase thermal efficiency and maximize processing power.

In the preheating stage, the pyrolysis plant process purifies the mixed waste plastic PVC material and harmful gases such as HCL gas are removed, this in turn protects the equipment from erosion. Inside the Pyrolysis plant the gas is fed into catalytic converter then cracked, fractionation, cooled and separated. The non-condensable gas is purified and supply for the heating process and production use, the generated flue gas purify again by the flue gas purification system to meet the developed countries’ emission standard.
The cracking pyrolysis system produces carbide and is fed onto a conveyor system to the combustion furnace for combustion and removal. The generated harmless ash is automatically collected and is environmentally cured.

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