Furnace

Ethylene Cracking Furnace

Gelan produced plate heat exchanger, heat transfer efficiency significantly improved, high pressure, corrosion resistance, compact structure, small size, stable operation, disassembly 69 times without leakage, long service life, applicable to a wider range of working conditions, more stable operation.

  • Certificate: ISO, ASME, CE
  • Heat exchange area: 1-500 square meters

Structure and Work Principle

In an ethylene cracking oven, large molecules are broken down into smaller ones. Propylene and ethylene are two of the valuable chemicals produced there. For this purpose, extreme heat is used. It has vital parts like the Section, Convection Section, TLE (Cooling Part and Decoking System. Steam and coal tar are combined first. The radiant heat portion then provides the heat. Some large molecules, such as ethylene, are separated by the intense heat. After that, the gas is quickly cooled to prevent further alterations. The carbon buildup has to be cleaned on a regular basis.

  • Feedstock Types:
  • Ethane, propane, naphtha, or gas oil.
  • Furnace Configuration:
  • Type: Coil type (most common) or radiant type.
  • Furnace Design: Vertical or horizontal configurations.
  • Temperature:
  • Operating temperature: 800°C to 900°C (1472°F to 1652°F).
  • Pressure:
  • Operating pressure: Typically 0.1 to 0.5 MPa (14.5 to 72.5 psi).
  • Reactor Design:
  • Coil Length: 100 to 300 meters (328 to 984 feet) depending on capacity and design.
  • Tube Diameter: Typically 30 to 60 mm.
  • Heat Transfer:
  • Heating Medium: Usually flue gas from combustion.
  • Heat Transfer Area: Designed to ensure efficient heat transfer and control the temperature profile.
  • Capacity:
  • Typically ranges from 1,000 to 2,500 tons of ethylene per day, depending on the scale of the plant.
  • Effluent Composition:
  • Products primarily include ethylene, propylene, butadiene, and various C1-C4 hydrocarbons.
  • Byproducts may include hydrogen and methane.
  • ControSystems:
  • Advanced process control systems for monitoring temperature, pressure, and feedstock flow.
  • Safety Features:
  • Includes safety interlocks, emergency shutdown systems, and adequate insulation to prevent heat loss and minimize fire risks.
  • Key Considerations:
  • Material Selection: Tubes are often made from high-temperature alloys to withstand the severe operating conditions.
  • Energy Efficiency: Modern furnaces incorporate heat recovery systems to enhance overall efficiency.
  • Environmental Compliance: Equipped with systems to control emissions and comply with environmental regulations.
  • Maintenance: Designed for ease of maintenance, with considerations for cleaning and tube replacement.
  • These specifications can vary based on the specific design and requirements of the facility, but they provide a general overview of what to expect in an ethylene cracking furnace.

Features

  • High Temperature Operation:

    • Operates at temperatures between 800°C and 900°C (1472°F to 1652°F) to facilitate thermal cracking of hydrocarbons.
  • Coil Design:

    • Typically utilizes a coil design where the feedstock flows through long, heated tubes, maximizing heat transfer and ensuring even temperature distribution.
  • Efficient Heat Transfer:

    • Incorporates advanced heat transfer technologies to optimize heating efficiency and minimize energy consumption.
  • Modular Design:

    • Often designed in modular sections for easier construction, maintenance, and potential capacity upgrades.
  • Advanced Control Systems:

    • Equipped with sophisticated process control systems for monitoring and adjusting temperature, pressure, and feed rates to maintain optimal operating conditions.
  • Material Durability:

    • Constructed from high-performance alloys that can withstand extreme temperatures and corrosive environments, ensuring longevity and reliability.
  • Integrated Safety Systems:

    • Features multiple safety mechanisms, including emergency shutdown systems, to prevent accidents and ensure safe operation.
  • Heat Recovery Systems:

    • Often includes systems to recover waste heat, improving overall energy efficiency and reducing operational costs.
  • Environmental Compliance:

    • Designed to minimize emissions and comply with environmental regulations, often incorporating scrubbing and treatment systems for flue gases.
  • Capacity Versatility:

    • Can be tailored to handle various feedstocks and adjust production levels based on market demand.

Appications

Shell and tube heat exchanger has a wide range of applications in chemical, petroleum, pharmaceutical, food, metallurgy, electric power and other industries. It can be used for heating, cooling, condensation, evaporation and other processes, is to realize the heat transfer and energy conversion of the important heat transfer equipment.

Main Types of Ethylene Cracking Furnace

Radiant and Convection Furnaces

Radiant furnaces use heat that shines out like the sun. They work fast. They are used to melt metal and make it soft. Convection furnaces use hot air or gas to make things warm. They save energy and keep things warm for a long time. They are used to make metal, dry things, and make clay pots.

Single-Pass and Multiple-Pass Furnaces

Single-pass furnaces let the heat go through one time. They are easy and not expensive, but they could be better at saving heat. Multiple-pass furnaces let the heat go through many times. This makes them better at using heat. They help keep things warm and save energy. They are used in oil and to produce chemicals.

Gas Feed and Liquid Feed Furnaces

 

Gas feed furnaces heat gas. They are used to burning things and making reactions happen. They are used in oil and gas work. Liquid feed furnaces heat liquids. They are used in oil work, like cleaning oil. They are made to heat liquids well and not get clogged.

Our SUCCESSFUL Projects

Product Advantages of Gelan Ethylene Cracking Furnace

 ISO and ASME Compliance: Manufactured based on ISO and ASME standards so that the CE and FDA are highly obtained in order to achieve excellent quality of manufacture up to 80% without having a high failure rate, hence little or no maintenance cost.

 

Precision Engineering: Gelan has 415 international-grade plate and gasket molds and 31 CNC precision machines which are able to produce high quantities in both standard and custom applications. The gaskets are very tough, withstanding up to 69 disassemblies without leakage, far above the national requirements.

 

Good Heat Sharing: Gelan plates have a unique shape that helps mix the liquid well, even when it moves slowly. This helps share heat better and keeps things clean.

 

Low Push Needed: Gelan plates have holes in the right spots and smooth paths for the liquid. This means we do not need to push a lot to move the liquid, so it works well.

 

Strong Under High Pressure: The gaskets and plates are solid. They can hold a lot of pressure without breaking. It is especially made for high pressure spots. It can handle high pressure work easily.

 

Lasts a Long Time: The gaskets are made of good stuff that keeps away rust. They are also slippery, so they do not break easily and last longer.

 

No Leaks, Works Well: Gelan plates have a sound sealing system that keeps them strong. They do not leak, which makes them work well for a long time.

 

Good Ethylene Furnace: The ethylene furnace is made to save energy and make ethylene. It uses special coils to spread heat well. The furnace parts do not get dirty fast, so they keep working longer. It also ensures that the heat and flow stay steady, so we get more ethylene and less waste.

Appications

Ethylene cracking furnaces are vital in the oil and gas industry. These units break giant molecules into ethylene. Ethylene is used in items like rubber and plastic. A suitable boiler will create more ethylene. It also reduces the amount of power used. Picking the ideal heater is vital. As a result, things become better and safer. Also, to be safer, the finest stoves consume less fuel and produce more.

FAQ

An ethylene-cracking furnace is a big machine. It helps break down oil or gas to make new things. These new things are used to make plastic, rubber, and lots of other things we use every day.

The Furnace gets very, very hot—hot like fire. It heats up the oil or gas until it breaks into smaller pieces. Then, it cools down really fast, so the pieces stay small.

We put oil or gas in the furnace. It can be things called ethane, propane, or naphtha. These come from deep underground, from oil or gas. We use what we have and what costs less.

The furnace makes things like ethylene and propylene. These are important for making plastic toys, bottles, and rubber. It also makes a few other things, like gas and tiny bits of different chemicals.

The furnace gets super hot, and it is hard to control. Sometimes, sticky black stuff called coke builds up inside. This makes the furnace work poorly. We need to clean it often. Also, it uses a lot of energy to stay hot, so it can be hard to save energy.

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