Gas cleaning and air purification equipment for the fuel and energy complex enterprises
Manufacturer and supplier of advanced gas-cleaning equipment PZGO LLC offers to individually design and manufacture diesel exhaust scrubbers, smoke & fume extractors, DeSOX / DeNOX systems and flue / waste gas purifiers for European and Asian energy-sector companies.
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Features of capturing smokes, exhausts and waste gases in the energy sector
Power industry is a backbone sphere in relation to all other branches of the modern economy and is the main driver in the electrification and mechanization of all productions.
At the same time, the energy industry, which consumes the greatest amount of hydrocarbons, emits about 40 percent of the total amount of man-made gaseous pollutants into the atmosphere. Unfortunately, power plants operating on renewable / alternative energy commodities, when viewed on a global scale, are still in a state that is close to embryonic.
Energy industry generates a huge amount of exhaust gases, almost all of the ingredients of which are a serious danger: hydrogen sulfide, sulfur oxides (especially, SO2), nitrogen oxides, carbon monoxide, acid fumes and anhydrides, benzpyrene, cadmium, mercury, saturated and unsaturated aromatic hydrocarbons, ketones, (as well as mechanical soot, ash and slags).
The average composition of smoke emissions after the combustion of hydrocarbons (table).
| Pollutant | Amount, mg / m3 |
| Mechanical impurities (ash and soot) | 6000-7000 |
| Furan and dioxins | 2*10-6 |
| Organic compounds, including benzapyrene | 100 |
| CO | 250 |
| Heavy metals | 50 |
| Cd, Tl | 2 |
| Mercury | 0.2 |
| NOx | 260 and higher |
| SOx | 250 and higher |
| HF | 10 |
| HCl | 750 |
However, research in the field of air purification from the combustion products of organic matter has been going on for many decades, and today the chemical and physical composition of the smokes and fumes of petroleum products, natural gas, coke, fuel oil, wood and coal, has been studied sufficiently.
The main feature of industrial emissions resulting from the combustion of hydrocarbon fuels is the integrated pollution of the gaseous outflows. That is, flue gas treatment equipment must be able to simultaneously (and effectively) capture a multitude of gaseous substances. And given the fact that emissions are heavily contaminated with fine dispersed soot and ash, gas cleaning devices must also be able to work as industrial dust collectors.
The most efficient, compact and inexpensive devices that meet these requirements are wet fluidized / floating bed scrubbers.
Fluidized bed scrubbers: ideal air-purification and exhaust (flue / waste) gases neutralizing equipment
The main advantages of fume extractors with a floating bed (also known as FBS-scrubbers) are wide versatility, high flow handling performance, compactness and ability to trap the widest range of harmful and undesirable compounds of chemical and mechanical nature.
The principle by which undesirable substances are retained in the working compartment of the apparatus is described by intermolecular Van der Waals interactions responsible for physical sorption.
The exhaust scrubber with a fluidized bed is capable of simultaneously neutralizing high-temperature toxic gas emissions (SOx, NOx, HCl, H2S) and dust inclusions in the form of ash and soot
Without going into a quantum-chemical description of the process, it should be clarified that when molecules approach each other at a distance of 2-3 molecular lengths, the force of dipole attraction begins to act. It is this micro process that is responsible for the “fusion” of the absorbent (water or reagent) with the absorbate (gas phase).
Design and technical features of FBS
As for the constructional design of the scrubber-type exhaust purifier, it is a vertical column or, more rarely, a horizontal framework with a compartment filled with movable bed (array of hollow polypropylene balls).
During operation of the apparatus, the contaminated stream is fed through the inlet and reaches the compartment with a polypropylene bed, over which water or an active liquid agent is abundantly sprayed, causing the balls to "boil" inside the absorbent (watch the video).
FBS working compartment demo stand: hollow PP balls are "boiling" inside the absorbent (water or reagent)
The working compartment of FBS is a kind of collision area where the two opposing forces are balanced. The contaminated stream repeatedly contacts the boiling interface of the fluidized bed, and both mechanical impurities and substances exhibiting chemical activity (CO, SOX, NOX, H2S, C20H12, C6H6, HCl, etc.) are sorbed.
As for chemically inert air mixture, it intactly passes the depths of the tower and is discharged into the air basin (or returned to the industrial cycle). In order to prevent drop entrainment, a demister is installed upstream of outlet connection.
It is also important to note that liquid sludge generated as a result of cleaning the flue and exhaust emissions of energy enterprises (CHP, TPP, boiler houses) can be dehydrated, followed by extraction of useful substances.
Engineering, manufacture and delivery of equipment
To discuss mutually beneficial conditions relating to the individual design and manufacture of compact, inexpensive and high-performance exhaust purifiers, industrial fume extractors and smoke scrubber systems, please send us an email or fill out the Customer’s questionnaire.
We are ready to deliver equipment to any region of Asia or Europe and, if necessary, to carry out the quick and professional commissioning of above equipment.
PZGO LLC – breathe with ease!