Coke oven gas centrifugal blower

Types of coke oven gas centrifugal blowers

A Coke oven gas centrifugal blower is a type of gas or air mover commonly used in the coking industry. There are some common types of coke oven gas centrifugal blowers :

• Coking machines:

  The primary function of a coking machine is to transform raw coal into coke by applying heat in the absence of air. During this heating process, by-products such as coke oven gas (COG) and coal tar are released. Coke oven gas is a valuable product that can be used for various purposes, including as a chemical feedstock or for energy generation. To achieve this, robust centrifugal blowers are utilized to effectively extract the gaseous by-products from the coking coal.

• Venturi scrubbers:

  Venturi scrubbers play a crucial role in the comprehensive treatment and purification of coke oven gas. Their primary objective is to mitigate environmental contamination and safeguard public health. By leveraging the inherent features of the Venturi tube, these scrubbers efficiently remove impurities found within the gas. Such impurities encompass dust, particles, and noxious substances, thereby facilitating the provision of sanitized and uncontaminated gas. Subsequent to this intricate purification procedure, the purified coke oven gas can find utility in diverse domains, encompassing power generation, chemical manufacturing, and other industrial undertakings.

  When dealing with the high volumes and pressures of coke oven gas, choosing a reliable venturi scrubber is crucial.

• Wet electrostatic precipitators (WESPs):

  WESPs are equipped with specialized electrodes for gas deodorization and dust extraction. They efficiently remove particulate matter from gases, including that emitted from coke ovens, thereby significantly diminishing the levels of pollutants released into the atmosphere. This not only contributes to the enhancement of air quality but also aids in the preservation of ecological integrity. Such actions are pivotal in safeguarding the environment and promoting sustainable practices. The processed gas can then be utilized for energy generation or other industrial applications, thus underscoring the importance of effective waste management solutions in mitigating environmental degradation.

Specification and Maintenance

The Coke oven gas centrifugal blower specification will vary based on the specific application needs. However, some common specifications include the pressure developed, airflow, power rating, housing construction, as well as support and mounting.

• Pressure Developed

  The pressure generated by the centrifugal blowers is also known as the dynamic pressure. It is the surge of the gas created by the motion of the gas. The effective pressure created by the centrifugal gas blower determines how it will be usable in the application. Several factors affect the dynamic pressure, such as the rotation speed of the impeller, outlet diameter, gas density, gas velocity, and temperature.

• Airflow

  The airflow rate (volume of gas flowing) of a centrifugal blower is the amount of gas that is pumped or moved within a timeframe. It is often measured in cubic feet per minute (CFM) or cubic meters per hour (m³/h). The airflow rate depends on the rotating speed of the impeller, outlet diameter, density of the gas, and gas pressure. To know more about how to calculate a centrifugal blower’s airflow, some factors affecting the airflow must be studied.

• Power Rating

  Coke oven gas centrifugal blowers are available in different power ratings. The power rating determines the operating power for the application. A power rating up to 50 kilowatts is common in many industrial use. Higher motor power means more airflow and pressure will be generated.

• Housing/ Enclosure

  A Coke oven gas centrifugal blower is normally built with strong alloy steel material like 16Mn, 20Mn, or Q345B. The material is durable, has a long service life, and can resist high temperatures. Housing/enclosure types can be open, closed, standard, or nonstandard.

• Support/ Mounting

  A support/mounting option describes the way the blower is installed or supported in an application system. Details of the installation holes or dimensions required for the mounting support are included in this option. It tells how the item is meant to be used or fitted only for a particular system.

Coke oven gas centrifugal blowers need maintenance to work perfectly over time. Daily inspections and routine maintenance are very important. A user manual is provided, and it is always good practice to follow it. Regular examinations help to discover any possible issues before they become very serious.

• Daily Inspection

  A daily visual inspection of the blower should be performed. Look for any signs of damage, looseness, or wear. A quick inspection of the impeller should be done to check for debris or clogging. Debris should be removed to improve the performance of the gas.

• Weekly Maintenance

  Do a more detailed inspection of the turbine. All fasteners should be observed closely to see if they are loose, and all electrical connections should be checked. The electrical wires need to be examined for signs of fraying or wear, and the blower should be cleaned thoroughly. The belts, bearings, and seals should be inspected this week.

• Monthly Maintenance

  All components should be inspected. Seals and gaskets should be replaced if there are any signs of wear. Bearings should be lubricated, and the impeller should be balanced. Any irregular wear or damage to the belts should be fixed and replaced immediately.

Scenarios of coke oven gas centrifugal blowers

Centrifugal blowers are designed to handle high volumes of gas. Here are some applications of coke oven gas centrifugal blowers:

• Environmental control:

  Centrifugal gas blowers assist in reducing pollutant exposure both in the workplace and in the wider community. They achieve this by effectively diluting the concentration of harmful gases within the oven. By doing so, the motion of the air created by the blower also ensures that any potentially toxic gases are less likely to escape from valve openings or doorways, thereby minimizing the risk of gas leakage and enhancing overall safety.

• Gas collection:

  Gaseous byproducts produced during the coking process are gathered up by the centrifugal tramp gas blower. The collected gases are then routed through a series of pipelines to specialized treatment facilities where they are meticulously refined for various applications or safely incinerated to prevent environmental pollution.

• Afterburning:

  In instances where there is a temporary cessation of gas treatment due to a malfunction or unscheduled maintenance of the gas cleaning equipment, the tramp gas blower plays a crucial role in preventing potential disasters. By continuously operating even during these critical situations, it ensures that gas doesn't escape into the atmosphere, thereby averting the risk of environmental contamination or safety hazards. Instead, the centrifugal tramp gas leader ensures that the cess gas is directed towards the furnace, where it undergoes combustion, thereby minimizing the risk of uncontrolled gas release and promoting safe operational practices.

• Drying:

  A significant amount of hot air is produced by the coke oven gas blower. This air can be utilized for drying various materials or products in different industries. The drying process involves the removal of moisture from the materials by exposing them to heated air. The centrifugal dryer air blower, which is driven by a central hub, is designed to dry materials efficiently by creating a constant stream of high-velocity air that carries away moisture from the material being dried.

• Firing:

  The centrifugal firing gas blowers are utilized to enhance the combustion process of fuels within diverse industrial ovens and furnaces. These blowers operate by introducing a consistent flow of high-pressure air into the combustion chamber. This influx of air serves to elevate the oxygen concentration within the chamber, thereby promoting efficient and complete combustion of the fuel. By ensuring optimal combustion, the centrifugal firing gas blowers not only improve combustion efficiency but also play a vital role in minimizing emissions generated during the burning process.

How to choose coke oven gas centrifugal blowers

Choosing the right coke oven gas blower requires a detailed analysis of the needs of the industrial application. Some of the key factors that need to be considered when choosing a coke oven gas centrifugal blower are as follows:

• Application requirements: It's important to understand the specific industrial applications. Factors, such as the volume of the gas that needs to be handled, the pressure required, and the temperature, etc., should be considered. Only by fully understanding the application requirements can the suitable type and model of the gas booster be chosen.
• Performance parameters: When selecting a coke oven gas centrifugal blower, users need to compare its performance parameters with those of other models. The flow rate, pressure, power, and efficiency of the centrifuge must be evaluated and compared. Users should choose a centrifugal booster's performance parameters that are optimal for their application to ensure that the equipment operates more efficiently and economically.
• Equipment compatibility: Additionally, a coke oven gas centrifugal blower has to be installed with some other pieces of equipment, such as a pipeline system. Therefore, the centrifugal blower's size, connection method, and other technical specifications also need to be considered to ensure that it is compatible with other equipment and systems.
• Quality and reliability: Users should also consider the quality and reliability of the coke oven gas centrifugal blower. To make a more informed choice, users should find reputable manufacturers, read product reviews, and listen to other users' experiences and suggestions.
• Cost and economic: Ultimately, users also need to consider the economic and cost factors of the coke oven gas centrifugal blowers. Not only the purchase cost, but also the operating cost and maintenance cost during use should be taken into account. Users should choose a gas booster that offers an optimal balance of performance and economy to achieve cost-effectiveness in their application.

Q&A

Q: What are the advantages of using a coke oven gas centrifugal blower in industrial applications?

A: There are several benefits to deploying a coke oven gas centrifugal blower. Firstly, they are built to withstand the corrosive nature of coke oven gas. They boast strong materials and coatings. Second, Coke oven gas centrifugal blowers can handle high temperatures. Durable components ensure that performance is not compromised even when the temperature is high. Another benefit is the efficient energy use. Some blowers have variable speed control and advanced motor technology. These features help reduce energy consumption while still providing the required airflow. Finally, a well-maintained coke gas blower works well to prevent explosive situations inside the plant by effectively transporting gas away from the oven. The elimination of gas reduces the likelihood of accidents caused by the ignition of gas within the facility.

Q: What is the difference between positive displacement and dynamic centrifugal blowers?

A: Positive displacement blowers increase air pressure by trapping fixed volumes of air and releasing them. This is done by rotating lobes within the machine. These types of blowers are good for low-flow, high-pressure applications. On the other hand, dynamic blowers such as the centrifugal type are better for high-flow, high-speed pressure applications. They increase the air pressure and flow by changing the direction of the air through the rotor. This is achieved by the rotation of the impeller.