WO2010005334A1

WO2010005334A1 - Wet filter president and its application

Info

Publication number: WO2010005334A1
Application number: PCT/RS2009/000017
Authority: WO
Inventors: Vaso Gluhajic; Mirko Pesko; Zivorad Nikolic; Danilo Obradovic; Petar Marijanovic
Original assignee: Vaso Gluhajic; Mirko Pesko; Zivorad Nikolic; Danilo Obradovic; Petar Marijanovic
Priority date: 2008-05-27
Filing date: 2009-05-12
Publication date: 2010-01-14
Also published as: RS52289B; RS20080243A; WO2010005334A4

Abstract

The PRESIDENT, wet filter using liquid (water in which some chemicals are added) as filtrate, cleans dirty gasses by removing dust and eliminates dangerous gasses. This affect is achieved due to simulation of rain behavior in the nature, but here in a small space. For that purpose through the pipe (22) the dirty mix of gasses is forced through the nozzle (3) reaching the speed of 200 km/h on the waterfall (4) what courses splitting of liquid which is taken from the container (21) through the pipe (5), forming a homogeneous mixture of: ions, molecules, small droplets and dust. At that place the physicochemical processes occur coursing that on the deflector (8) and nozzle (29) the particles of liquid are separated from gas. In this way it is achieved that dirty gas having 5-10000 mg/m3 of dust is getting out clean with les then 0.05 mg/m3. Adding in the water chemicals which absorb destructive gasses (e.g. SO2) the gas mixture containing 2930 mg/nri3 of SO₂ eliminates SO₂ completely which due chemical process is converted to solid particles, which are ecologically neutral, and which remain in the filter with dust.

Description

WET FILTER PRESIDENT AND ITS APPLICATION

This Discovery lays in the general field of Mechanical Engineering, and is related to all fields of engineering where exists need to eliminate dust in the gas and removal of dangerous gases generated in industrial processes especially SOx and NOx. According to the international patent classification (MKP) it is denoted as:

- A47 L — 9/18 - filters with liquids

- BOlD- 47/00 - elimination of particles (dust) dispersed in a gas gases or evaporates by using liquid for cleaning purposes.

TECHNICAL PROBLEM

Industrialization is followed with poisoning of air and ground. The largest generator of poisoning are thermo power plants, heating stations and industrial plants witch spit out in the atmosphere a large amount of particles (dust) and poisoned gases (for instances SOx and NOx). Due to depositing of particles on the ground and due to aced rains human environment is poisoned. In this way large area around poisoning sources where human existence is jeopardized.

This require a design of a gas cleaner which will provide, in the objects where it is installed, that the level of dust in a purified gas is reduced to the normal situation in the atmosphere in poorly inhabited regions or in mountings and that poisoning gases (SOx and NOx) are eliminated.

Production and maintain cost of a new design as well as energy consumption of a new product has to be acceptable and lower the price of existing filters.

STATE OF THE ART

V

Utilities as thermo power plants, heating stations and different small or large scale fire boxes cement production facilities, sand facilities, chemical factories arid similar utilities if do not posses filters produce and disuse to atmosphere billion of cubic meters of gas contain even 2000 mg/m3 of dust. This gasses are especially dangerous contain poison gasses (SOx and NOx) and very often contain poison liquids in the form of small droplets coursing acid rains. Because of that enormous intellectual, scientific and financial efforts are engaged to solve this WORLD wide problem.

At present time processes of gas cleaning in the industrial utilities are done with different filters such as:

- Diaphragms (synthetic, textile, paper. ...)

- wet (with bubble production or water cretins)

- electromagnetic

- scrubbers, cyclones

Engineering solutions of these, for now contemporary filters provide cleaning of gasses that on the output they contain 50 to 200 mg/m3 of dust (depending of the filter age and type), and size of a dust particle can be even up to 300 micrometers. A very little has been archived to eliminate poison gasses. This is still in an experimental phase.

Due to fact that atmosphere in u urban parts in industrial regions the air is contaminated in the buildings where human live, especially in winter time a lot of illnesses are developed. Quality of the air in the buildings depends very much on filtration method applied. Dry filtration is mainly based on the principles of diaphragm which do not eliminate dust particle with the dimensions less then hole in diaphragm. Increase of a dust quantity on diaphragm the energy consumption also increases. Reduction of the holes in diaphragm (as for instance in HEPA filter to 0.3 micrometers) also increases energy consumption. Certain part of bacteria, micro organisms, mites and similar (with dimensions much less then 0.3 micrometers) are sprayed out in the air and remain in the room. The other part remaining in the filter has ideal conditions to multiply. Namely, organic tissue (remains of insects, bacteria, and mites), heat coming from the heater or electric engine), darkness in the filter and humidity make ideal conditions for that. Usually filters are use for a couple o days, or couple of weeks and even for couple of months. When the filtration facility is switched on again in the rooms sprayed out a lot material dangerous for human health. This problem is also present with vacuum cleaners and air conditioners.

Electro-static filters with positively charged plates, with direct voltage 12000 to 15000 V are considered much more efficient, but are also much more expensive. All particles can not be charged but they are often applied with in the combination with wet, damped with oil, filters with diaphragms. For the elimination of unpleasant aroma filters wit active coal damped with precise dose of thrietilglicol for the microbe elimination. Sometimes the very expensive filters used for atomic, chemical and biological protection are also applied.

Gravitationally-ejected wet filters (GEMF filter) (See Figs. 1 and 2) is an invention old only a couple of years designed on the basis of achievements in the fields of hydraulics, pneumatics, automation and mechanical engineering was in the beginning amid to be used in vacuum cleaners. Experimenting with different models (more then 60 experiments) theoretical assumptions that existing wet filters approaches could be improved, considering cleaning and ecological properties, were verified by applying some new engineering approaches. These findings are by patent protected. The essence of the protected model is addition of deflector and some other filter designee improvements. Such a vacuum cleaner named " Mega Eko" is in production now. Produced vacuum cleaners show that they have the best cleaning properties in comparison with all so fare [produced vacuum cleaners. Beside very good cleaning properties, refreshes air in the room and show very low energy consumption. "Mega Eko" has also some drawbacks as it is usual with very first models production:

- With the all standard auxiliaries applied with the other vacuum cleaners, because of the reduced air flow sufficient impact energy in the waterfall was not achieved that produces babbling which reduces cleaning properties. - Air used to cool electromotor contains particles produced due to mortification of carbon brushes

Father research showed that the modification of design of GEMF Filter could be used to produce device for cleaning of large quantities of gas in thermo power plants and industrial utilities.

SU - l«d«siBJskl GEMF filler

SUBSTANCE OF THE INVENTION

The basic cell of wet filter PREZIDENT (MF Prezident) (Firs. 11 and 12) is designed by the modification of GEMF filter (Figs 1 and 2) and by adding some construction. Namely by: a. Excluding of tunnels (sl.2 poz. 5 and 6) b. Excluding expanded tube with funnel (SLl. poz.9) c. Inserting dispensed tube (Sl.11 poz.5) d. Lowering deflector (si.11 poz.8) to the level of the outlet of the reactor tube (sl.ll poz.7) e. Forming of the space above deflector in order to reduce gas flow speed and by addition of nozzle (si.11 poz.9), f. As well as with other design modification in order to modulate al of these elements to perform required function. h. Application of modular approach in filter design

Allowed to define basic cell which can function independently. Basic cells can be designed to clean gas with flow rate from (50 to 300) cubic meters per hour. Modular filer design is applied to the filter designee as a whole. This enables a mass filter production since there are a lot of standard elements reducing production costs and simplifying maintenance. For instance for the construction of a fitter for the gas cleaning with flow rate of 100,000 m³/h filter will consist of 1000 basic cells and the filter dimensions will be 6m x 6m x Im. Let us say that the basic principle of filter is base on the simulation of rain.

Filtrate is a liquid: water or in the water diluted adequate chemicals substances if beside claming of dust elimination of damaging gasses (SOx or NOx,) is required.

It follows an explanation of a filter operation if filtrate is water. In the nature the global atmospheric cleaner is rain. This, due to bipolarity of water molecules allows continual physic chemical reactions with large different compounds. In a gas saturated by the water dump molecules of water connect with dust particles of the size of 0.01 micrometers and larger forming water droplets. These droplets behave like bodies and are not governed by the Stocks law. This fact allows to a filter even to eliminate tiny dust particles (even of an ion size) from the large quantity of poisoned gas. Elimination of dust particles eliminates also bacteria, microorganisms and mites. Ionized water is a very god electricity conductor and eliminating positive ions from the gas which perturb bioelectric currant in human body. By measurements it is verified that if one puts in a filter dirty gas with (5,000 to 10,000) mg/m³ on the outlet of filter there are 0.05mg/m³ corresponding to the dust contain in a poorly inhabited mountain area after rain. Measurements were perfumed by the Milovan Percevic team in the "Trayal" (ex military factory "Zakic" where military equipment for ABH protection used to be produced including filters) company in Krusevac using military measurements equipment...

Suspension of dangerous gas with the simultaneous dust elimination is echoed if in water adequate chemical additives are added. In this way dangerous substances in a gas are transformed in ecologically neutral particles eliminating these particles together with dust and other particles from the gas.

Experiments show that if the filtrate water contains 18% of ammonium hydroxide (NH₄OH) and gas mixture on the input in filter contains 1051 ppm or 2931.5 mg/m³ of SO₂ on the filter output there is no SO₂ at all due to fact that as a result of chemical reaction

SO₂ + 2NH₄OH = (NH₄)_ZSO₃

The solid particles of ammonium sulfate have been formed. Also experiments with kalium hydroxide give very good results. These experiments were performed with the KIj aic Miroslav team from the Provincial Center for Energy Efficiency at the Faculty of Technical Sciences, University in Novi Sad. Let us also mention that some other chemical compound could be used.

Let us consider problems of energy consumption. Energy is used:

- to lead dirty gas to the filter water fall (4) with the speed of 200 km/h from nozzle (3)

- to lead filtrate to filter water fall (4) from the tank (1) via tube (5)

- to make a homogenous mixture of the ions, molecules, small droplets and dust particles in reactor (7) where chemical processes have to be performed in order to eliminate dangerous gases (SOx, NOx, ...) and to form ecologically neutral particles, then to form particles connected with water molecules to increase their mass to separate liquid (filtrate) and particles in the gas on the deflector (8) and to perform final cleaning of the gas from the eventually remaining droplets and particles on nozzle (9).

In order to perform above cleaning operations it is established that to overcome friction of flow gas and liquid approximately lk\wh to 1000 m³, what is 50 % less then with electro filters, while the quality of cleaning is enormously better.

Let us note that in thermo power plants gain in thermo power is estimated to 8%. SHORT DESCRIPTION OF PROSPECTUS

Wet filter Prezident is described in Figs, where:

Picture 11 - cross section of the basic cell of a wet filter

Picture 12 - reactor, deepness tube and waterfall all three projection)

Picture 13 -cross section of the filter with four branches

Picture 14 - cross section (top view) of the filter cell with four branches

Picture 15 - cross section of the filter with more cells with two branches and five chambers Picture 16 - cross section (bottom view) of the fitter with more cells with two branches and five chambers

Picture 17 - cross section of a vacuum cleaner wit the basic cell of the wet fitter Prezident

Picture 18 - schematic presentation of the application of a filter in a power plant

DETAIL INVENTION DESCRIPTION

1. In order to successful Eli minion of dust particles and dangerous gases from gas the basic cell of wet filter Prezident (Sl. 11 and 12) has to have: a. Container (1) in which is liquid connecting all filter parts b. Input tube (2) leading in by means of vacuum or under the pressure a filthy gas; this tube could have different geometric shapes c. Input tube (2) has to be partly above liquid level and the bottom part of it in a slight arc becomes horizontal and is connected to nozzle (3) which is also horizontal. d. The aim of nozzle (3) to spray liquid over the whole with of waterfall (4) to form small liquid droplets, molecules or ions. In order to do so the speed of the gas from the nozzle (3) has to be between 100 and 200 km/h. The form of a nozzle (3) has not to be of the form of standard nozzle, but it mast be such that the outlet gas has sufficient energy to break liquid in waterfall with minimal energy consumption. e. The tube (2) in deepness which is used to provide liquid to the waterfall with ratio of 5 to 15 liters of liquid to 1.000 literals of gas. This tube is vertical and on the top it is closed and comprehend the nozzle (3) making a runic part with it. It has sidewise hole above of outlet hole of nozzle (3) with identical size and direction. f. Reactor (7) is connected to sidewise hole of the tube (2) and with the outlet hole of nozzle and the reactor hole comprehend and coincide to the hole of the tube (2) and to the outlet hole of nozzle The reactor is used that the liquid flowing from the tube (2) from the hole (5) over outlet hole of the nozzle (3) is broken in small droplets, molecule or ions providing conditions for physic-chemical process to clean the gas. The reactor is a tube of diameter T could be cylindrical, rectangular or polygonal form with the horizontal length of (3 to 12) D which by the slight arc goes vertically with length of (2 to 5) D. Outlet hole of the reactor is in the liquid. This is done that in the case if there is no enough energy to break waterfall the process of cleaning could be continued by forming of bubbles. g. Diaphragm (6) is formed of two parts: lower part (6a) and upper part (6b) dividing container into two chambers. Lower part of the diaphragm (6a) is in the liquid preventing flow of the gas through the liquid at the bottom of container. Regulation of liquid level is performed on the principal of connected containers. Lower part (6a) and upper part (6b) of diaphragm on their connection are done so that their interspaced is a longitudinal one in the form of nozzle (9) used that by joining kinetic and gravitational energy eventual remains of the particles and small drops are directed downwards in the liquid, where due to chemical reactions they are transformed to a solid ecologically neutral particles which will stay in the filter and the gas mixture on the bases of pressure differences is directed towards outlet (12). h. Center of deflector with the holder (8) is placed exactly above the center of outlet hole of reactor (7) its bottom boundary is on the distance of (1 to3)D. Deflector holder length is (1,5 to 3)D and is fixed to the lid (11). The purpose of deflector is to liquid with the dust particles from the gas. In order to do so the mixture (droplets, dampened dust and gas) which goes vertically from the outlet hole of the reactor to the semicircle d deflector surface where homogenization of droplets and dampened dust particles is performed forming flowing mass which flows over the surface changing direction (for 180°) up to the point where kinetic and gravitational forces are of the same direction when under the influence of this forces together liquid and dampened dust as a spray shower down towards liquid surface (this particles have higher energy since their mass is around 800 times larger then the mass of the mass of gas), while the gas goes upward toward nozzle (9), where fine filtration is performed and then goes out through the hole (12) which is placed on the lid (11).

2. The wet filter Prezident cells with more branches (Sl. 13 and 14). The cells with multiple-le branches are used for larger flows using the larger number of the same standard elements in order that dimensions as well as production costs are as small as possible. One branch is identified as common construction of nozzles (3), waterfalls (4), deep tube (5) and reactor (7) and deflector with holders (8). These elements are of the same form and have the same function as in the basic cell. The other elements are adjusted to allow common functioning of more branches. For example the cell of a filter with four branches which consist from the container (21), witch could be oval or rectangular, in which all filter parts and filtrate are situated, inlet tube (22) on which bottom end following angle of 90° with the same distances concentrically placed four branches. Diaphragm (26) divide container into two chambers: outer (I) and inner (II). In the outer chamber (I) are placed all four outlet holes of reactor (7) and deflectors with holders (8) and in this chamber cleaning is being performed. Diaphragm (26) consists of two parts: lower part (26a) and upper part (26b), these being the tubs of cylindrical or rectangular shape, which on there mutual connections are done so that their distance between overlapping with whole boundary (circle) forms the nozzle (29) and outlet tube (30).

3. Wet filter Prezident with multiple cells, branches and chambers (Sl. 15 and Sl. 16) could be used for cleaning of dirty gas from a couple of liters to couple of thousand of cubic meters of gas flow per second All cells with the same performances work simultaneously in parallel and because of that the overall energy consumption is a simple sum of the energy consumption of a single cell when it works independently (as it is described above). To optimally consume energy in the process of gas introduction to filter and gas outlet from the filter and to reduce production and manipulation costs as many numbers of parts as possible have to have the same geometry. The design of a filter with cells of two branches (Sl. 15 and Sl. 16) is done so that it is put in a large container (41) with two colons and five chambers. This container joins all the filter parts and contains filtrate. By the diaphragms (6) divided the container (41) into five chambers (1,11.111, IV and V) (of course depending of the wanted throughput flow it could be more or less chambers evolved), three chambers (I, III and V) are used for cleaning purpose and two chambers (II and IV) are used to distribute dirty gas by tubes (43 and 2) to the branches in cells and for taking clean gas from the nozzle (29) to output collector (55) and output tube (56). Diaphragm (46) consists itself from two parts: lower part (46a) and upper part (46b). Bottom of the lower part (46a) is put into liquid preventing of gas flow between chambers through the liquid.

Liquid level regulation is done on the principle of connected vessels. Upper side of the lower part (46a) are so design that alongside with the upper parts of (46b) form nozzles (49) witch have the same role as nozzle (9) described above. Upper part of diaphragm (46b) is fixes for lid of chamber (51). Central input tube is (52) is used to feed dirty gas into collector (53) from witch via distribution tubes (54) gas is fed in input tubes (2) for all filter cells. The functioning of the remaining parts: nozzles (3), deep tube (5), reactor (7), water fall (4), and deflector (8) are described above.

For the introduction of liquid (filtrate) and for the discharge of liquid with the mud a classical tools are required (could be automatically or manually) handled. The liquid (filtrate in the container could be flowing, but the level of liquid in the container has to be maintained at the constant level. This filter could be use to clean dust or eliminating dangerous gases as Sox or NOx from the gas regardless is the gas hot or cold. In the case if the hot gas is used the liquid (filtrate) temperature has to be considered.

4. Vacuum cleaner president could use filtrate in a basic cell, filtrate in a cell with multiple branches or the filtrate in more cells depending on the surface which has to be cleaned. Dust collected from the flour using standard vacuum cleaner accessories under differences in pressure and air flow under influence of turbine powered via electro motor, is leaded through the tube to the input tube of a filter where the air is cleaned in a way described above.

In order to eliminate carcinogen carbon dust generated because of carbon brushes consumption in electromotor filter Prezident (see Sl. 17) has hole (15) through witch fan of electromotor (16) is supplied by fresh air (of course it could be done without fan in that case vacuum cleaner is used for that purpose). For these purposes a sufficient quantity of air is needed, which is always the case, through the electromotor chasse (17) is needed. Because of that on the bottom part electromotor chasse there are one or more holes which are hermetically connected by the tubes (19) to input tube (2). In order that the cleaning is performed via vacuum cleaner the air speed from the nozzle (3) has to be over 50km/h.

5. Application of wet filter Prezident in thermo power plant is explained using Sl. 18. From the firebox (1) flue gas are coming with the temperature around 280 C. In order that the wet filter Prezident could be use the temperature of input gas has to be below 80⁰C. In order to achieve that a cooler (2) is necessary, and then consumer (8) of such collected energy, which is up to 8% of the term power plant power, is also necessary. This energy could be successfully used for heating of settlements, in agriculture for organic food production in cold areas as well as for other processes. In a wet filter Prezident liquid (filtrate), if beside dust dangerous gases and acids have to be eliminated (as SOx and NOx, ... or sulfuric acid, nitric acid, ...) it is necessary that filtrate are chemical compounds which by means of physicochemical processes convert dangerous gases and acids in a ecologically neutral solid compounds, which remain in the filter with other dust particles and cleaned gas is sent to atmosphere. When in a filter container there is enough quantity of precipitation that quantity is let out into the precipitator (4). After process of heavy slurry is completed solid part is transported to damp and liquid part feeds back to regenerate in container (5) for regeneration purposes and to be used for adding it in the filter container (3) and filtrate for a new process of filtration. In this way filtrate is circulating without poisoning of human environment. Let us say that what is new here is the filter Prezident, while for the elements on Sl. 18 listed as pos. 2, 4, 5, 6, 7 and 8 are well known and of they will apply also here.

Applicant

Gluhajic Vaso

/ I

Claims

PATENT REQUEST

1. The basic cell of wet filter President (Fig. 11 and Fig. 12) possesses: vessel (1), in which filtrant (liquid) is contained, connecting all other filter parts, input tube (2) (witch can be designed in different geometric shape) through witch by means of vacuum or under pressure dirty gas is introduced, then snout (3) is used that on the whole width of waterfall (4) by means of gas energy liquid is sprayed in small droplets, molecules or ions, while into waterfall (4) liquid is led by a bottom tube (5) which is closed on the upper site and vertically dived into liquid and because of pressure differences throughout side hole sends liquid into waterfall with the approximate ratio of 5 to 15 liters of liquid to 1000 liter of gas, reactor (7) is a continuation of the snout and bottom tube and serves to brake liquid to small droplets, molecules or ions in order to provide physic-chemical process of gas cleaning; reactor is a tube of cylindrical, square or polygonal shape with the horizontal length of (3 to 12) D ( D being the diameter of the reactor tube) which with the slight curvature to 900 turns to vertical part with the length of (2 to 5)D, output hole of the reactor is its top point which is also dived in a liquid and by introducing deflector with its holder (8) with its center on the distance (1 to 3) D above the center of reactor output (7) and by fixing it by the holder of the length (1.5 to 3)D to the lead (11) it is archive that dust particles with liquid are separate from gas, then shelf (6) dived into liquid consisting of the bottom part (6a) and upper part (6b) dividing the vessel into two chambers (I and II), bottom part of the shelf (6a) is dived into liquid preventing gas flow between chambers I and Il while regulation of liquid level between two chambers is done on the principle of connected vessels, bottom part (6a) and upper part (6b) of the shelf on the mutual connection are produced in such a way that space between them because of their overleaf is making a longitudinal snout (9) through which gas flow from the first chamber (I) is directed towards the second chamber (II) and is used that by joint kinetic energy and gravitational energy the eventual reaming dust particles and small droplets in the gas are forced downward to liquid and the clean gas due to pressure differences is directed upward towards output (12) placed on the lid (11).

2. Cell of wet filter President with more branches. Cell of the four branch filter (Fig. 13 and Fig 14) possesses a vessel (21) which could be cylindrical or square shape in which all filter parts and filtrant (liquid used to clean gas) are placed, input tube (22) at which at the bottom part under angle of 900 equally spaced concentric four branches are paced each having a snout (3), bottom tube (5), waterfall (4), reactor (7) and above all four branches deflectors with holders (8) are placed whose centers are on a distance of (1 to 3)D above the center of reactor (7), by means of holders with length of (1.5 to 3)D deflectors are fixed to the lid (31), shelf (26) consisting of bottom part (26a) and upper part (26b) which basically are tabular, polygonal or cylindrical parts, so that the vessel (21) is divided into two chambers: outer chamber (I) and inner chamber (II), lower part of a cylindrical shelf (26a) is dived in a liquid to prevent of gas flow through the liquid between inner chamber (II) and outer chamber (I) and the regulation of liquid level between chambers is done on the principle of connected vessels; lower part and upper part of shelf on the mutual connection is processed to form snout (29) used to that the joint kinetic energy and gravitational energy of gas forward downwards eventually remain particles and small droplets in chamber (I) into liquid in chamber (II) and cleaned gas forward upwards to output (30) placed on the lid (31). 2/2

3. Wet filter President with more cells, branches and chambers (Fig. 15 and Fig.16) consists of large vessel (41) including all filter parts and contains filtrant, main input tube (52) used to bring dirty gas, collector (53) from which by means of distributing tubes (54) gas sent to all input tubes of cells (2) and from them to all branches of filter (with the contents and functionality described above in 2.), shelves (46) dividing vessel in this case into 5 chambers (I, II, III, IV and V), in three chambers (I₁ III and V) are placed parts of the filter branch and there the process of gas cleaning is performed , two chambers (Il and IV) are used to distribute dirty gas to input collector (53) to all input tubes (2) (to all cells), each shelf (46) consists of two parts: lower part (46a) and upper part (46b), lower part (46) ), lower part of a shelf (46a) is dived in a liquid to prevent of gas flow through the liquid between chambers and the regulation of liquid level between chambers is done on the principle of connected vessels; lower part and upper part of shelf on the mutual connection is processed to form snout (49) used to that the joint kinetic energy and gravitational energy of gas that eventually remain particles and small droplets in chambers (I₁ III I V) forward downwards into liquid in chambers (11 and IV) and cleaned gas forward upwards to output of collector (54) and further towards main output tube (56) into the atmosphere

4. Vacuum cleaner PRESIDENT (Fig. 17) consists of filter with the basic cell, or filter with the basic cell with more branches, or filter with more cells, the dust collected from the floor using standard auxiliaries of vacuum cleaner, under influence of turbine which courses the pressure differences forcing air flow through the tube into filter, for the additional cleaning of air from carcinogen carbon dust produced due to wear away of carbon brushes of a vacuum cleaner electromotor must have tube (or chamber) (15) through which electromotor fan (16) is supplied by air (if fan is not used then tube (15) uses air from the suction turbine) to cool electromotor, electromotor housing (17) , on the bottom part there are one or more holes (18) witch are hermetically connected via tube (19) with the input tube (2) .

5. For application in thermal power plants (S1.18), Wet Filter Prezident must contain as marked: cooler (2), collector of thermal energy (8), Wet Filter Prezident (3) which contains filtering agent, precipitator (4), waste collection device (7) and a container (5) for regeneration purposes and preparation of the filtering solution.

Applicant Gluhajic Vaso (L σn o