A strong attempt has been made to reduce air pollution in the cement industry. One of the fastest expanding industries in the world is the cement sector. Around 4.4 billion tonnes of cement are manufactured worldwide each year. Technology has made it possible for businesses to produce cement in greater quantities than in the past.
This industry's main sources of air pollution are landfills, tips, conveying belts, crushing mills, and kilns. An important contributor to environmental imbalances, particularly regarding air quality, is the cement sector. Sulfur dioxide, nitrogen oxides, and grey dust are the primary ecological contaminants. We have posted a guide on reducing air pollution in the cement sector as well-known dealers of air pollution control equipment in Surat. The blog examines particular methods for reducing air pollution, including the measurement, classification, and management of particulate matter, as well as how energy efficiency might enhance air quality.
Pollutants in the Cement Industry That Cause Air Pollution:
1) Sulfur Oxide :
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2) Carbon Dioxide :
The major contributor to CO2 emissions is the cement industry. An estimated 5% of all CO2 emissions are attributed to the cement sector. CO2 is created as a result of fuel combustion and the decarbonization of raw materials. The use of fuel, transportation, and energy from production to disposal are additional sources of CO2 emissions. Global climate change, other respiratory conditions, and human asthma attacks are all caused by CO2. The neurological and cardiovascular systems are also harmed by CO2.
3) Nitrous Oxide :
Nitrogen dioxide is created by thermal oxidation at temperatures between 1200 and 1600 degrees Celsius. The nitrogen oxide family includes nitrogen dioxide, nitric acid, nitric oxides, nitrates, and nitrous oxides. Due to its varied family of compounds, nitrogen oxide is accountable for a wide range of negative effects on people and the environment. Numerous acidic compounds are produced during the reaction between nitrogen dioxide and water. It is challenging for aquatic creatures to thrive when lakes and water streams become acidic due to these acidic compounds. It is also responsible for the increase in global temperatures. Breathing in the smog produced by NOx leads to respiratory diseases. It results in chronic lung conditions and breathing problems.
4) Volatile organic compounds (VOCs) :
Incomplete combustion during the industrial process results in the production of VOCs. VOCs contribute to the creation of ozone and soil and water pollution. Plant growth is slowed by it. In addition to headaches, nausea, and damage to the liver, kidneys, and central nervous system, humans often endure the irritation of the respiratory tract, eyes, and skin.
How to Reduce Air Pollution in the Cement Sector?
Several Air Pollution Control Devices (APCDs) are used in the cement industry to limit the release of dust and other pollutants into the atmosphere. The type of dust collectors you use is determined by the gases' temperature, moisture content, flow rate, dust loading, and particle size.
- Process control optimization methods can cut nitrogen emissions by up to 30%.
- SO2 emissions can be reduced by oxidising the kiln's atmosphere and maintaining stable operation, as well as by lowering SO2's volatility at lower flame and combustion temperatures.
- To reduce particle emissions, kilns can use electrostatic precipitators.
- Using the right fuels and raw materials can reduce emissions of NO2, SO2, heavy metals, or volatile organic compounds (VOCs). However, some fuels and raw materials may contain considerable amounts of nitrogen, sulphur, heavy metals, or organic compounds.
Industrial Fans in Cement Industry
to Reduce Air Pollution
Industrial fans have long been utilised as tools to reduce air pollution. The air pollution management system for industrial fans in the cement sector is very straightforward.
Through input ducts with directing vanes, the raw gas is introduced into the filter compartments where it is distributed equally among the filter bags. This design results in a downward gravimeter gas flow along the filter bags, which precipitates the dust into the hopper below. Unlike filters, which allow raw gas to enter through dampers placed in the hoppers, the flexible industrial fan's construction prevents the creation of excessive can velocities (or vertical, upward gas flow). High gas velocities during online cleaning cycles prevent minute material from accumulating in the hoppers. The clean gas leaves the bag at the top after being filtered by the cloth from the outside-in raw gas.
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