Reactor to produce gasoline(Pyrolysis)

 

1) Characteristics of pyrolysis reaction

Pyrolysis reaction is a complex process that involves the decomposition of organic materials at high temperatures in the absence of oxygen. This reaction can be carried out in various types of reactors, such as fluidized bed reactors, rotary kilns, and vacuum pyrolysis systems. The choice of reactor type depends on the specific feedstock and desired products.

 

During the pyrolysis process, the organic material undergoes thermal degradation, leading to the formation of volatile gases, liquids, and solid char. These products can be further processed to obtain valuable chemicals, fuels, or energy.

 

In addition to high temperature and pressure conditions, pyrolysis reactions may also require specific atmosphere conditions to control the composition of the gas phase and prevent unwanted side reactions. Furthermore, corrosive media may be involved in certain pyrolysis processes due to the nature of the feedstock or reaction environment.

 

The harsh operating conditions associated with pyrolysis reactions pose challenges for equipment design and material selection. High-temperature corrosion resistance is crucial for maintaining reactor integrity and prolonging equipment lifespan. Additionally, safety measures must be implemented to mitigate potential hazards associated with handling corrosive media and operating under high-pressure environments.

 

Overall, understanding and managing these factors are essential for optimizing pyrolysis processes and ensuring safe operation in industrial applications.

 

2) The material selection of the reactor

High temperature resistance: Since the pyrolysis reaction needs to be carried out at high temperatures, the reactor material needs to have good high temperature resistance. Stainless steel, superalloy and other materials are common high temperature resistant materials, which can meet the high temperature requirements of pyrolysis reaction.

 

Corrosion resistance: Corrosive media may be involved in the pyrolysis reaction, so the reactor material needs to have good corrosion resistance. Materials such as stainless steel and nickel-based alloys have excellent corrosion resistance and can resist the corrosion of corrosive media that may be produced in the pyrolysis reaction.

 

Strength and stability: Pyrolysis reactions may involve high-pressure environments, so the reactor material needs to have sufficient strength and stability. Stainless steel, high alloy steel and other materials have high strength and stability, and can withstand the high pressure environment in the pyrolysis reaction.

 

3) Recommended materials and reasons

Considering the characteristics of the pyrolysis reaction and the material properties of the reactor, it is recommended to choose stainless steel or superalloy as the material of the reactor. Here's why:

 

Stainless steel: Stainless steel has excellent high temperature resistance, high pressure resistance and corrosion resistance, which can meet the high temperature, high pressure and corrosive environment requirements of pyrolysis reaction. At the same time, stainless steel also has high heat conductivity, which can quickly and evenly distribute the heat in the reaction process.

 

Superalloys: Superalloys are materials specifically designed for high temperature environments and have extremely high temperature resistance. Superalloys are an ideal choice for pyrolysis reactions at extremely high temperatures.

 

1. Raw material preparation

1) Plastic raw materials: The main choice of polyolefin plastics, such as polyethylene (PE), polypropylene (PP), etc., because these plastics are made from olefins in petroleum by polymerization reaction, with high conversion potential.

 

2) Pretreatment: pretreatment of plastic raw materials, including cleaning, crushing, drying and other steps to remove impurities, improve the efficiency of the subsequent reaction and the quality of the product.

 

2. Pyrolysis reaction

1) Reaction principle: Plastic will break the molecular chain at high temperature, from large molecules to small molecules, to achieve the transformation from solid to liquid, and accompanied by the generation of some gaseous products. Among them, C5H12-C11H24 and other components constitute the main components of gasoline.

 

2) Reaction conditions: The plastic raw material is put into the reactor, which usually needs to be carried out in an anaerobic or low-oxygen environment to avoid the combustion of plastic. The reaction temperature is usually high, generally in the range of hundreds of degrees Celsius. The reaction time depends on the type of raw material, the reaction conditions, and the quality of the product required.

 

3) Reactor selection: Due to the need to withstand high temperature and possible pressure during the reaction process, the reactor should be selected with high temperature and corrosion resistant materials, such as stainless steel, superalloy, etc. In addition, the reactor should have good sealing and stirring function to ensure the uniformity and efficiency of the reaction.

 

3. Separation and purification

1) Gas-liquid separation: After the pyrolysis reaction, the product includes two parts: gas and liquid. The gas and liquid are separated by steps such as condensation.

 

2) Distillation and rectification: Distillation and rectification of liquid products to separate components with different boiling points to produce gasoline and other valuable by-products (e.g., diesel, ground wax, etc.).

 

3) Filtration and purification: The obtained gasoline is filtered and purified to remove impurities and harmful substances and improve the quality and purity of gasoline.

 

4. Product characteristics

1) Gasoline quality: Gasoline obtained through plastic conversion may be slightly lower in quality than gasoline derived from traditional petroleum, but it can be used as fuel. Key indicators such as octane number can be optimized by adjusting reaction conditions and subsequent treatment processes.

 

2) Economic value: The process of converting waste plastics into gasoline realizes the recycling of resources, and has good economic value. At the same time, the process also helps reduce the pollution of plastic waste to the environment.

 

The following is an inquiry from a customer in American.

 

Step1: His questions about the tablet press: (The blue font is our answer).

 

Q1: I need a reactor that processes plastic and turns it into gasoline.

 

The stainless steel reactor suits for you.

(1)2L/3L/5L/10L/20L/30L/50L/100L/150L/200L---Standard

(2)2L/3L/5L/10L/20L/30L/50L/100L/150L/200L---EX-proof

 

Q2: I need one that produces maybe 500 liters of gasoline a day and need to see the reactor production cycles you have.

 

Under normal pressure, it maybe need 20~25days.

 

Because the efficiency and yield of the conversion of plastic to gasoline can be affected by a number of factors, such as the type of plastic, the temperature and pressure of the reactor, the use of catalysts, and so on. These factors may need to be carefully controlled and optimized in order to obtain the best conversion results and gasoline quality.

 

so if you can provide these follows parameters, i can help you to ask the technical staff:

Working pressure.

Working temperature.

Motor Power.

Motor speed.

Jacket heating method.

 

Step 2: Quotation.