Claims:We claim:
1. An air pollution control tower (100) for air purification, the air pollution control tower (100) comprising:
a base chamber (101) having plurality of openings (101a) for entry of polluted air, each of the plurality of openings (101a) have demister pads (201) to eliminate dew/fog and other restricted larger floating contaminants of polluted air;
at least one pleated filter (102) placed behind the demister pads (201) to remove particulate matter from the polluted air passed through the demister pads (201), wherein a dust collection system is provided below the pleated filter (102) to collect the contaminants from the polluted air;
an isolation chamber (103) to develop ambient pressure in the filtered air and to uniformly distribute the filtered air for further processing, wherein the isolation chamber (103) has an auto cleaning system to clean the pleated filter (102) periodically;
a carbon filter chamber (104) having an activated blended type carbon filter and impregnated activated alumina (202) for odour and toxic gas treatment, wherein the activated blended type carbon filter and impregnated activated alumina (202) is transversely placed inside the chamber (104) to increase the residential time of filtered air inside the carbon filter chamber (104) for better purification;
an axial fan chamber (105) having an axial fan (203) to create high static pressure inside the air pollution control chamber (105) for streamline flow of air inside the tower (100); and
a deflector (106) provided on the top of the pollution control tower (100) to pass the clean air from the tower (100) to the surrounding.

2. The air pollution control tower (100) as claimed in claim 1, wherein the auto cleaning system is a compressed air cleaning system which periodically exert high pressure compressed air into the at least one pleated filter (102) for cleaning the accumulated dust and contaminants.
3. The air pollution control tower (100) as claimed in claim 1, wherein the dust collection system has a zig-zag passing route which selectively passes the collected dust accumulated below the at least one pleated filter (102).
4. The air pollution control tower (100) as claimed in claim 1, wherein acoustic cladding is provided inside the axial fan chamber (105) for smooth operation and noise reduction.
5. The air pollution control tower (100) as claimed in claim 1, wherein the at least one pleated filter (102) is a polyester type pleated filter which is capable of removing particulate matter up to 1 micron.
6. The air pollution control tower (100) as claimed in claim 1, wherein the air to cloth ratio of the at least one pleated filter (102) is between ¬¬3 to 5.
7. The air pollution control tower (100) as claimed in claim 1, wherein a rain detector is provided which shut down the air pollution control tower (100) while raining to avoid choking of filter and to save electricity.
8. A method (400) of air purification by air pollution control tower (100), the method (400) comprises steps of:
Passing (401) the polluted air through the demister pads (201) for removing dew/fog and other larger floating contaminants of polluted air;
Passing (402) the air from the demister pads (201) through the at least one pleated filter (102) for removing particulate matter;
Introducing (403) the filtered air from the at least one pleated filter (102) into isolation chamber to develop ambient pressure in the filtered air and to uniformly distribute the filtered air for further processing;
Passing (404) the uniformly distributed filtered air from the isolation chamber (103) into carbon filter chamber (104) for odour and toxic gas treatment;
Creating (405) high static pressure, by the axial fan chamber (105), inside the air pollution control tower (100) for streamline flow of air inside the tower (100); and
Releasing (406) the purified air from the air pollution control tower into the surrounding.
9. The method as claimed in claim 8, wherein the at least one pleated filter is a polyester type pleated filter which is capable of removing particulate matter up to 1 micron.
, Description:AN AIR POLLUTION CONTROL TOWER FOR AIR PURIFICATION AND A METHOD THEREOF

FIELD OF THE INVENTION
[001] The present disclosure, in general, relates to an air pollution control system for enhancing the quality of air in the surrounding and more particularly, to an air pollution control tower for air purification. The proposed air pollution control tower is capable of removing particulate matter such as PM1, PM2.5, PM10 along with various toxic gases like CO, SOx, Nox & Odour from polluted air.
BACKGROUND OF THE INVENTION
[002] Air pollution is becoming a major health problem which affects millions of people all over the world. Air pollution emission issues are associated with many sectors, which includes power, transport, industry, residential, construction and agriculture. High levels of air pollutants, such as Suspended Particulate Matter (SPM), Sulphur dioxide (SO2), Oxides of Nitrogen (NOx) and Carbon Monoxide (CO) etc. causes increased mortality from heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections. World Health Organization (WHO) estimates that, about 4.2 million premature deaths every year in world because of the effects of outdoor air pollution on health. According to a Greenpeace report, 1.2 million people die every year in India due to outdoor air pollution amounting to 12.5 % of all deaths in India. World Bank estimates that India loses around 3.0 % of its GDP due to air pollution every year
[003] United States Patent Application U.S.A.62/649595 discloses an air quality management device, an air quality control system, and a method for controlling air quality. It relates to an air quality monitoring and controlling system and method for enclosed spaces, which provides an innovative closed loop (i.e., inline real time feedback) air management process, utilizing learning and prediction capabilities to provide with effective air purification and reliable alert.
[004] United States Patent US5188644 discloses a comprehensive particulate filtering unit in which the filter includes bag like elements secured to infuser members which surround a blower and motor, designed to operate and be used as a compact portable unit.
[005] None of the available air purification unit is capable of cleaning the environment on large scale.
[006] Therefore, there is a need to develop an air pollution control tower for air purification and a method thereof which can remove particulate matter such as PM1, PM2.5, PM10 along with various toxic gases like CO, SOx, Nox & Odour from polluted air on large scale.
OBJECT OF THE INVENTION
[007] It is therefore an object of the present invention, to solve the aforementioned and other drawbacks existing in the existing air pollution controlling system.
[008] Another primary object of the present invention is to provide an air pollution control tower to reduce the air pollution in various major cities and industrial zones.
[009] Yet another objective of the present invention is to provide an air pollution control tower for removal of particulate matter from ambient air up to 1 micron with more than 90% efficiency and in result release the pure and clean air.
[0010] Yet another object of the present invention is to provide an air pollution control tower which is capable of adsorbing various toxic gases before releasing the purified air in the surrounding.
[0011] Yet another object of the present invention is to provide an air pollution control tower having an automatic cleaning system facility which prevents filter choking and routine filter cleaning.
[0012] Still yet another object of the present invention is to provide an air pollution control tower which reduces the consumption of electricity and is economical.
[0013] Still yet another object of the present invention is to provide an air pollution control tower which can operate throughout the year in all seasons.
[0014] Still yet another object of the present invention is to provide a method of air purification by air pollution control tower.
SUMMARY OF THE INVENTION
[0015] One or more drawbacks of conventional air purifier systems, and additional advantages are provided through the air pollution control tower and method as claimed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0016] The present subject matter talks about an air pollution control tower for air purification. The air pollution control tower has a base chamber, at least one pleated filer, an isolation chamber, a carbon filter chamber, an axial fan chamber and a deflector. The base chamber has a plurality of openings for entry of polluted air. Each of the plurality of openings have demister pads to eliminate dew/fog and other restricted larger floating contaminants of polluted air. The at least one pleated filter is placed behind the demister pads to remove particulate matter from the polluted air passed through the demister pads. A dust collection system is provided below the pleated filter to collect the dust particles from the polluted air. The isolation chamber is provided to develop pressure in the filtered air and to uniformly distribute the filtered air for further processing. An auto cleaning system is provided in the isolation chamber to clean the pleated filter periodically. The carbon filter chamber has an activated blended type carbon filter for odour and toxic gas treatment. The activated blended type carbon filter is transversely placed inside the chamber to increase the residential time of filtered air inside the carbon filter chamber for better purification. The fan chamber has an axial fan to create high static pressure inside the air pollution control chamber for streamline flow of air inside the chamber. The deflector is provided on the top of the pollution control tower to pass the clean air from the tower to the surrounding.
[0017] In an aspect, the auto cleaning system is a compressed air cleaning system which periodically exert high pressure compressed air into the at least one pleated filter for cleaning the accumulated dust.
[0018] In an aspect, the dust collection system has a zig-zag passing route which selectively passes the collected dust accumulated below the pleated filter.
[0019] In an aspect, acoustic cladding is provided inside the axial fan chamber for smooth operation and noise reduction.
[0020] In an aspect, the at least one pleated filter is a polyester type pleated filter which is capable of removing particulate matter up to 1 micron.
[0021] In an aspect, the air to cloth ratio of the at least one pleated filter is ¬¬ 3 to 5.
[0022] In an aspect, a rain detector is provided which shut down the air pollution control tower while raining to avoid choking of filter due to moisture & water droplets and to save electricity.
[0023] The present subject matter further talks about a method for air purification by air pollution control tower. The method comprises passing the polluted air through the demister pads for removing dew/fog and other larger floating contaminants of polluted air; passing the air from the demister pads through the at least one pleated filter for removing particulate matter; introducing the filtered air from the at least one pleated filter into isolation chamber to develop ambient pressure in the filtered air and to uniformly distribute the filtered air for further processing; passing the uniformly distributed filtered air from the isolation chamber into carbon filter chamber for odour and toxic gas treatment; creating high static pressure, by the axial fan chamber, inside the air pollution control chamber for streamline flow of air inside the chamber from ambient through sucking effect; and releasing the purified air from the air pollution control tower into the surrounding.
[0024] In an aspect, the at least one pleated filter is a polyester type pleated filter which is capable of removing particulate matter up to 1 micron.
[0025] In order to further understand the characteristics and technical contents of the present invention, a description relating thereto has been made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0026] Further objects and advantages of this invention will be more apparent from the description when read in conjunction with accompanying drawings of exemplary embodiments of invention and wherein:
[0027] Figure 1 illustrates front view of an air pollution control tower according to one of the embodiments of the present subject matter;
[0028] Figure 2 illustrates sectional view of the air pollution control tower according to one of the embodiments of the present subject matter;
[0029] Figure 3 illustrates isometric view of the air pollution control tower according to one of the embodiments of the present subject matter; and
[0030] Figure 4 illustrating a method of air purification by air pollution control tower according to one of the embodiments of the present subject matter.
DETAILED DESCRIPTION OF THE INVENTION
[0031] The present invention discloses an air pollution control tower for air purification and a method of air purification by air pollution control tower.
[0032] Referring to Figures 1, 2 and 3 illustrating front, sectional and isometric views of air pollution control tower 100 according to one of the embodiments of the present subject matter. The air pollution control tower 100 is provided on a strong civil foundation. Further, the air pollution control tower 100 has supporting structure provided to hold it rigidly.
[0033] The air pollution control tower 100 for air purification comprises a base chamber 101, at least one pleated filter 102, an isolation chamber 103, a carbon filter chamber 104, an axial fan chamber 105 and a deflector 106. The base chamber 101 has plurality of openings 101a for entry of polluted air. Each of these plurality of openings 101a have demister pads 201 provided to eliminate dew/fog and other restricted larger floating contaminants of polluted air. Also, the demister pads 201 restrict the entry of birds from entering the tower 100. The demister pads 201 are fitted with locking arrangements over the plurality of openings 101a. In an aspect, at geographical locations like southern parts of India, the demister pads 201 can be avoided by putting the coarse mesh for restricting the larger floating contaminants of polluted air and birds.
[0034] The at least one pleated filter 102 is placed behind the demister pads 201 to remove the particulate matter from the polluted air passed through the demister pads 201. The at least one pleated filter 102 is a polyester type pleated filter which is capable of removing particulate matter up to 1 micron with high efficiency (PM 2, 99.9% efficiency & PM 1 with more than 90% efficiency). Considering the ambient air input, the pleated filter 102 provides maximum air to cloth ratio within a small area. The increased air to cloth ratio, reduces the total system sizes in area requirements, as well as other accessories and components which attracts much cost reduction. In the above system is with capacity of 60,000 CMH volume handling capacity per day and capacity to clean the environment air up to 350 mtr radius air volume / week. A dust collection system is provided below the pleated filter 102 to collect the dust from the polluted air. The dust collection system has a zig-zag passing route which selectively passes the collected dust accumulated below the at least one pleated filter 102. Due to pursing by high pressure compressed air at 6-8 bar pressure & gravity of dust, the dusts falls down. During every Auto cleaning time with respect to predefined data, the hopper passes the dust in the Zig-Zag passing line as shown in figure towards the silo. As the dust accumulation is very less, Zig Zag passing is more effective.
[0035] The isolation chamber 103 is provided above the base chamber 101. The purified air coming out of the at least one pleated filter 102 is in the form of a stream. The isolation chamber 103 is provided to develop ambient pressure in the filtered air and to uniformly distribute the filtered air before processing the air in the carbon filter chamber 104 for odour and toxic gas treatment. An auto cleaning system is provided at bottom of the isolation chamber 103 to clean the pleated filter 102 periodically. The auto cleaning system has a pulse jet cleaning arrangements which are fitted though compressor air and solenoid valve by timer arrangements. In an aspect, the pulse cleaning duration is maximum and pressure & volume requirements are lower which increase the effectiveness of the cleaning operation.
[0036] The valve 301 is preferably provided at the bottom of the isolation chamber 103. High pressure compressed air is exerted into the pleated filter 102, through the open valve 301, for cleaning the accumulated dust and contaminants. The dust and contaminants from the pleated filter 102 is directed towards the dust collection system from where the dust is removed from the system without releasing the dust in the environment. The advantage of providing auto cleaning system is that there is no need for manual maintenance & intervention for cleaning. Further, the whole air pollution control tower work efficiently for longer time and there is no untimely choking of filters.
[0037] The carbon filter chamber 104 is provided for odour and toxic gas treatment. The carbon filter chamber has an activated blended type carbon filter and impregnated activated alumina 202. This filter 202 is capable of removing volatile organic compounds, odour, Sox, Nox and other toxic gases. The activated blended type carbon filter and impregnated activated alumina 202 is arranged transversely inside the carbon filter chamber 104. The transversal position of the activated blended type carbon filter and impregnated activated alumina 202 ensures increased residential time of filtered air inside the carbon filter chamber 104 for better purification.
[0038] The purified air from the carbon filter chamber 104 is then sucked in by the axial fan chamber 105. The axial fan chamber 105 has an axial fan 203. The axial fan 203 creates a high static pressure inside the air pollution control chamber for streamline flow of air from the base chamber 101 to the axial fan chamber 105. The axial fan chamber 104 has acoustic cladding provided inside the axial fan chamber 104 for smooth operation and noise reduction. The noise created in the axial fan 203 is cancelled by the acoustic cladding present inside the axial fan chamber 104. The in and out circulation of the air from the air pollution control tower 100 is maintained by the axial fan 203 of the axial fan chamber 104.
[0039] The purified air sucked by the axial fan chamber 105 is then pass into the surrounding through the deflector 106. Top portion of the deflector 106 has mesh profile 204 to stop birds, from entering. Further, the top portion is covered to restrict entry of birds and rain from the top.
[0040] In the event of rain, the pollution in the surrounding settle down and there is no need for air pollution control chamber 100 during that time. In an aspect, a rain detector is provided to detect the rain. In the event of rain, the rain detector will shut down the air pollution control tower 100. It not only save the energy but also avoid chocking of filter due to entry of water in the air pollution control tower.
[0041] Figure 4 illustrates a method 400 of air purification by air pollution control tower 100 according to one of the embodiments of the present subject matter. At step 401, the polluted air is passed through the demister pads 201 for removing dew/fog and other larger floating contaminants of polluted air. Also, the demister pads 201 restrict the entry of birds from entering the tower 100. The demister pads 201 are fitted with locking arrangements over the plurality of openings. In an aspect, at geographical locations like southern parts of India, the demister pads 201 can be avoided by putting the coarse mesh for restricting the larger floating contaminants of polluted air and birds.
[0042] At step 402, the air from the demister pads 201 is passed through the at least one pleated filter 102 for removing particulate matter. The at least one pleated filter 102 is a polyester type pleated filter which is capable of removing particulate matter up to 1 micron with high efficiency (PM 2, 99.9% efficiency & PM 1 with more than 90% efficiency). Considering the ambient air input, the pleated filter 102 provides maximum air to cloth ratio within a small area. A dust collection system is provided below the pleated filter 102 to collect the contaminants from the polluted air. The dust collection system has a zig-zag passing route which selectively passes the collected dust accumulated below the at least one pleated filter 102.
[0043] At step 403, the filtered air from the at least one pleated filter 102 is introduced into isolation chamber 103 to develop ambient pressure in the filtered air and to uniformly distribute the filtered air for further processing. The isolation chamber 103 is provided above the base chamber 101. The purified air coming out of the at least one pleated filter 102 is in the form of a stream. The isolation chamber 103 is provided to develop ambient pressure in the filtered air and to uniformly distribute the filtered air before processing the air in the carbon filter chamber 104 for odour and toxic gas treatment.
[0044] At step 404, the uniformly distributed filtered air from the isolation chamber 103 is passed through the carbon filter chamber 104 for odour and toxic gas treatment. The carbon filter chamber 104 is provided for odour and toxic gas treatment. The carbon filter chamber 104 has an activated blended type carbon filter and impregnated activated alumina 202. This filter 202 is capable of removing volatile organic compounds, odour, Sox, Nox and other toxic gases. The activated blended type carbon filter 202 is arranged transversely inside the carbon filter chamber 104. The transversal position of the activated blended type carbon filter and impregnated activated alumina 202 ensures increased residential time of filtered air inside the carbon filter chamber 104 for better purification.
[0045] At step 405, for streamline flow of air inside the air pollution control tower 100, high static pressure is created by the axial fan 203 provided in the axial fan chamber 105. The axial fan chamber 105 has acoustic cladding provided inside the axial fan chamber 105 for smooth operation and noise reduction. The noise created in the axial fan 203 is cancelled by the acoustic cladding present inside the axial fan chamber 105. The in and out circulation of the air from the air pollution control tower 100 is maintained by the axial fan 203 of the axial fan chamber 105.
[0046] At step 406, the streamline flow of purified air sucked by the axial fan 203 in the axial fan chamber 105 is then released in the surrounding via. deflector 106. Top portion of the deflector 106 has mesh profile 204 to stop birds from entering. Further, the top portion is covered to restrict entry of birds and rain from the top.
ADVANTAGES
[0047] The proposed air pollution control tower 100 is capable of reducing the air pollution in various major cities, industrial zones where maximum pollution occur. Further, the proposed air pollution control tower 100 is capable of removing particulate matter from air up to 1 micron with more than 90 % efficiency and release pure air in the surrounding. It is also capable of removing volatile organic compound and various toxic gases. The proposed air pollution control tower 100 is also provided with an automatic cleaning system which prevent filter choking and routine filter cleaning. The air pollution control tower 100 is also capable of working in all kinds of weather.
[0048] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
[0049] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.