Chemical and dust removal mainly by gas scrubbers can be applied in various industries to remove different types of chemical pollutants from exhaust gases.

Here are some examples in chemical removal:

• Power plants: Gas scrubbers are commonly used in power plants to remove acid gases such as sulfur dioxide (SO2) and nitrogen oxides (NOx) from the exhaust gases generated by burning fossil fuels.
• Chemical manufacturing plants: Gas scrubbers are used in chemical manufacturing plants to remove organic compounds and other chemical pollutants from exhaust gases.
• Pharmaceutical manufacturing plants: Gas scrubbers are used in pharmaceutical manufacturing plants to remove volatile organic compounds (VOCs) from exhaust gases.
• Food processing plants: Gas scrubbers are used in food processing plants to remove odors and other chemical pollutants from exhaust gases.

Some specific examples of industrial applications where gas scrubbers are used to remove dust include:

• Cement plants: Gas scrubbers are commonly used in cement plants to remove dust and other particulate matter from the exhaust gases generated by the kiln and other equipment.
• Steel mills: Gas scrubbers are used in steel mills to remove particulate matter, such as iron oxide and other metal oxides, from the exhaust gases generated by the steelmaking process.
• Mining operations: Gas scrubbers are used in mining operations to remove dust and other particulate matter from the exhaust gases generated by drilling, crushing, and other mining activities.

To remove both dust and chemical pollutants at the same time, a gas scrubber system can be designed with single or multiple stages. For example, to remove urea and ammonia pollutant from stream a two-stage gas scrubber system could include a first stage that removes the urea using a liquid scrubbing agent, such as water, and a second stage that removes the ammonia using a chemical scrubbing agent, such as sulfuric acid. When dust and chemical pollutant dissolve in the same scrubbing agent a single stage scrubber is used to remove the pollutants simultaneously.