Retrofit Emission Control Device Working Principle
A retrofit emission control device for a DG (Diesel Generator) set is a device that is installed on an existing diesel generator to reduce the emission of pollutants into the environment. In this article, we will discuss the working principle of a retrofit emission control device for a DG set, step by step.
Step 1: Installation
The first step in the process is to install the retrofit emission control device on the DG set. The device can be installed either before or after the exhaust muffler. However, it is recommended to install the device before the muffler for better performance.
Step 2: Filtration
Once the device is installed, the exhaust gases from the DG set pass through the device. The device contains a filtration system that removes the particulate matter (PM) present in the exhaust gases. The filtration system usually consists of a diesel particulate filter (DPF) or a ceramic filter.
Step 3: Oxidation
After the filtration process, the exhaust gases pass through a catalytic converter that contains a precious metal catalyst such as platinum, palladium or rhodium. The catalyst promotes the oxidation of the remaining hydrocarbons and carbon monoxide (CO) in the exhaust gases into carbon dioxide (CO2) and water (H2O).
Step 4: Reduction
The next step in the process is the reduction of nitrogen oxides (NOx) present in the exhaust gases. This is achieved through a process called selective catalytic reduction (SCR). The device contains a urea injection system that sprays a solution of urea and water into the exhaust gases before they enter the SCR catalyst. The urea reacts with the NOx to form nitrogen (N2) and water (H2O).
Step 5: Monitoring
The final step in the process is monitoring the emissions from the DG set. The device contains sensors that monitor the emissions and send data to a control unit. The control unit then adjusts the injection of urea solution to maintain the required level of NOx reduction.
Here is a simplified step-by-step explanation of the working principle of a retrofit emission control device for a DG set in a table format:
| Step | Description |
|---|---|
| 1 | Exhaust gases from the DG set are directed into the retrofit emission control device. |
| 2 | The device captures or converts harmful pollutants such as particulate matter, NOx, and CO into less harmful substances. |
| 3 | Different types of retrofit emission control devices use various methods such as filtration, oxidation, or reduction. |
| 4 | For example, a diesel particulate filter (DPF) captures particulate matter by trapping it in a filter that is periodically cleaned. |
| 5 | A selective catalytic reduction (SCR) system reduces NOx emissions by injecting a urea solution into the exhaust gases, which reacts with the NOx to form harmless nitrogen and water vapor. |
| 6 | A diesel oxidation catalyst (DOC) converts CO and unburned hydrocarbons into carbon dioxide and water vapor through oxidation. |
| 7 | The treated exhaust gases are released into the environment with reduced levels of harmful pollutants. |
| 8 | Retrofit emission control devices require periodic maintenance and replacement of certain components to maintain their effectiveness. |
Overall, retrofit emission control devices work to reduce the amount of harmful pollutants emitted from a DG set into the environment, leading to improved air quality and compliance with emissions regulations.
Retrofitted Emission Control Equipment for Dg Set Supplier in India
There are several suppliers of retrofit emission control equipment for DG sets in India. Here are a few examples:
- CleanAir Engineering: They offer a range of retrofit emission control equipment for DG sets including diesel particulate filters, selective catalytic reduction systems, and diesel oxidation catalysts.
- Exhaust Control Industries: They specialize in the design, manufacture, and supply of exhaust gas purification systems for diesel engines and offer retrofit emission control equipment for DG sets such as diesel particulate filters and selective catalytic reduction systems.
- GreenTech Catalyst: They provide a range of emission control solutions for various industries including DG sets. Their offerings include diesel particulate filters, oxidation catalysts, and selective catalytic reduction systems.
- CUMMINS India: They offer a range of retrofit emission control equipment for DG sets such as diesel particulate filters, selective catalytic reduction systems, and diesel oxidation catalysts. They also provide installation and maintenance services.
- Purelogic Labs India Pvt. Ltd.: They offer retrofit emission control equipment for DG sets such as diesel particulate filters and diesel oxidation catalysts. They also provide installation and after-sales services.
It is important to research and compare different suppliers before choosing one to ensure that they offer the appropriate type of retrofit emission control equipment for the specific DG set and its emission control requirements. It is also advisable to consider factors such as the supplier's reputation, experience, and customer service before making a decision.
Retrofitted Emission Control Equipment for Dg Set Price
The prices of retrofitted emission control equipment for DG sets in India may vary depending on various factors such as the type of equipment, the size of the DG set, and the level of emission control required. Here are some approximate price ranges for different types of equipment:
Diesel Particulate Filters (DPF):
The cost of a DPF may range from Rs. 50,000 to Rs. 1,50,000 depending on the size of the DG set and the level of emission control required.
Selective Catalytic Reduction (SCR) Systems:
The cost of an SCR system may range from Rs. 2,50,000 to Rs. 5,00,000 depending on the size of the DG set and the level of emission control required.
Diesel Oxidation Catalysts (DOC):
The cost of a DOC may range from Rs. 30,000 to Rs. 1,00,000 depending on the size of the DG set and the level of emission control required.
It is important to note that the above price ranges are approximate and may vary depending on the supplier, the specific equipment model, and other factors. Additionally, retrofit emission control equipment may require regular maintenance and replacement of certain components over time, which may add to the overall cost.
FAQs
Can retrofit emission control equipment be installed on any DG set?
Retrofit emission control equipment can be installed on most DG sets, but it is important to consider the compatibility of the equipment with the specific make and model of the DG set. It is advisable to consult with a supplier to determine the appropriate type of equipment for a specific DG set and its emission control requirements.
How much maintenance do retrofit emission control devices require?
Retrofit emission control devices require periodic maintenance and replacement of certain components to maintain their effectiveness. The frequency and type of maintenance required may vary depending on the type of equipment and the specific usage and operating conditions of the DG set.
Will retrofit emission control equipment affect the performance of the DG set?
Retrofit emission control equipment may have some impact on the performance of the DG set, such as increased backpressure in the exhaust system. However, suppliers can help to select equipment that minimizes any negative impact on the performance of the DG set.
How much can retrofit emission control equipment reduce emissions from a DG set?
The level of emission reduction achieved by retrofit emission control equipment may vary depending on the type of equipment and the specific emissions control requirements of the DG set. In general, retrofit emission control equipment can significantly reduce harmful emissions such as particulate matter, NOx, and CO, leading to improved air quality and compliance with emissions regulations.
Is it mandatory to install retrofit emission control equipment on DG sets?
The installation of retrofit emission control equipment on DG sets may be mandatory in certain locations or for certain types of DG sets to comply with emissions regulations. It is advisable to consult with local authorities and regulatory bodies to determine the applicable regulations and requirements.
How long does it take to install retrofit emission control equipment on a DG set?
The installation time for retrofit emission control equipment may vary depending on the type of equipment and the specific installation requirements of the DG set. In general, installation can take anywhere from a few hours to a few days.
What are the benefits of installing retrofit emission control equipment on a DG set?
The benefits of retrofit emission control equipment include improved air quality, compliance with emissions regulations, and reduced health risks associated with exposure to harmful pollutants. Additionally, some regulatory bodies may offer incentives or tax credits for the installation of retrofit emission control equipment.
How can I determine the appropriate type of retrofit emission control equipment for my DG set?
It is important to consult with a supplier to determine the appropriate type of retrofit emission control equipment for a specific DG set and its emission control requirements. Factors such as the make and model of the DG set, operating conditions, and emissions regulations may all need to be considered.
What is the expected lifespan of retrofit emission control equipment?
The expected lifespan of retrofit emission control equipment may vary depending on the type of equipment and the specific usage and operating conditions of the DG set. However, most retrofit emission control equipment is designed to last for several years with proper maintenance and replacement of certain components.
Can retrofit emission control equipment be installed on old DG sets?
Retrofit emission control equipment can be installed on both old and new DG sets. However, it is important to consider the condition and compatibility of the DG set with the specific type of equipment being installed. In some cases, older DG sets may require additional modifications or upgrades to ensure compatibility with retrofit emission control equipment.
How does retrofit emission control equipment compare to original equipment manufacturer (OEM) emission control systems?
Retrofit emission control equipment can be a cost-effective alternative to OEM emission control systems, especially for older DG sets that may not have been designed with advanced emission control technology. Additionally, retrofit equipment can often be customized to meet specific emission control requirements and can be installed without the need for significant modifications to the DG set.
What kind of emissions reduction can I expect from retrofit emission control equipment?
The amount of emissions reduction achieved by retrofit emission control equipment may vary depending on the type of equipment and the specific emissions control requirements of the DG set. In general, retrofit equipment can significantly reduce harmful emissions such as particulate matter, NOx, and CO, leading to improved air quality and compliance with emissions regulations.
Can retrofit emission control equipment be removed or transferred to another DG set?
Retrofit emission control equipment can often be removed or transferred to another DG set if necessary. However, it is important to consult with a supplier to determine the feasibility of such a move and any potential modifications or adjustments that may be required.
