Efficient scrubbing systems for fertilizer industry

Recently the agricultural plant opportunities have been improved due to the additional process units that allow updating the production and quality of fertilizers, resulting in the requirement for effective air pollution control of toxic emissions from fertilizer industries.

Thus, the novel scrubbing technology makes it possible to achieve the lowest ever urea dust emissions at a urea granulation plant in the US. Nowadays the scrubbing system technology faces the challenge of stricter air pollution control of urea dust because of the development of new urea production in the USA and special attention on fine particulates, emission limits and their influence on the human health.

To be more precise, urea dust from the fertilizer plants is considered to be a “particulate matter or PM”, an air pollutant that is regulated by the US EPA and has a significant health impact of the penetration of these fine particles into the human lung. Therefore, the requirements of less than 10 mg dust per Nm3 gas on a dry basis promote the development of novel scrubbing systems for air treatment that improve air quality.

The newly developed scrubbing system is considered to be a highly practical, the most efficient, granulator and cooler air treatment device that meets new regulations. The unique scrubbing system consists of conditioning spray and downstream mesh pads. The new scrubber offers such an advantage as the horizontal orientation of the air treatment system resulting in easy access to internal components, which provide total system flexibility.

One more scrubbing system’s benefit is the ability of the scrubber to treat numerous gas contaminants in one common vessel. Also, it is possible to separate concentrations and/or chemistries due to the application of specific weirs that isolate individual sections of the air treatment device. Thus, each stage is able to operate as an independent scrubber with its unique liquid-to-gas ratio.

After considering different air pollution control devices, it was decided that wet scrubbing system is the best air treatment device to scrub the acids by circulating phosphoric acid. For example, venturi scrubbers and packed cyclone separators are used for these purposes, the main of which includes the challenge solution of the problem of handling phosphoric acid in a hot climate, and the clogging of the cyclone packing material by silicon compounds.

Finally, the venturi scrubbing system supports an ammonia absorption rate of 95 percent of 110 kilograms/hour lost from the reactor, while the dust emissions from fertilizer plants are about 20 kilograms/hour that makes this air treatment device perfect for the industry.

Optromix is a fast-growing vendor of wet air scrubbers. The multi-vortex scrubber is able to remove gas emissions, dust, vapors, and other pollutants from a gas stream.  It is an innovative technology created to save water that makes it more cost-efficient and differs from other types of scrubbers.  If you have any questions or would like to buy a multi-vortex wet air scrubber, please contact us at info@optromix.com

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