WO2021028729A1 - Incinerator for biological waste - Google Patents

Incinerator for biological waste Download PDF

Info

Publication number
WO2021028729A1
WO2021028729A1 PCT/IB2020/054376 IB2020054376W WO2021028729A1 WO 2021028729 A1 WO2021028729 A1 WO 2021028729A1 IB 2020054376 W IB2020054376 W IB 2020054376W WO 2021028729 A1 WO2021028729 A1 WO 2021028729A1
Authority
WO
WIPO (PCT)
Prior art keywords
incineration
compartment
biological waste
end portion
scrubber
Prior art date
Application number
PCT/IB2020/054376
Other languages
French (fr)
Inventor
Bharat Bajarang Ballal
Satish Ganapatrao Patil
Renuka Bharat Ballal
Shubhra Bharat Ballal
Original Assignee
Bharat Bajarang Ballal
Satish Ganapatrao Patil
Renuka Bharat Ballal
Shubhra Bharat Ballal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bharat Bajarang Ballal, Satish Ganapatrao Patil, Renuka Bharat Ballal, Shubhra Bharat Ballal filed Critical Bharat Bajarang Ballal
Publication of WO2021028729A1 publication Critical patent/WO2021028729A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
    • F23C13/02—Apparatus in which combustion takes place in the presence of catalytic material characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/10—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/114—Arrangement of sensing devices for combustion bed level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/40—Supplementary heat supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/20—Medical materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/104—High temperature resistant (ceramic) type

Definitions

  • the invention relates to an economic and ecofriendly waste incineration device for biological waste. It avoids spread of the airborne diseases/pathogenic microorganisms in the environment.
  • Droplet nuclei do not carry moisture and their size always remains below 10 microns. Droplet nuclei get generated when the fluid of pathogenic microorganisms evaporates. Such droplet nuclei (dried but alive form of pathogenic microorganisms) have the size of 1 to 5 microns. They are small, light weighted hence remain suspended in air for long time and may cross the distance in kilometers with wind currents hence remains powerful tool for infecting large mass of the community. All products relayed simply on the mechanical incineration by using heating coil (s) and no special provision is made for removal of pathogenic microorganisms. Hence during the operation of the incinerators these creates aerosols, droplets and droplet nuclei of pathogenic microorganisms. Also during incineration, release of carbon particles is another major issue.
  • the present invention is developed for overcoming the problems related with prior incineration machines.
  • the incineration device of present invention is efficient and removes the pathogenic microorganisms, aerosols, droplets and droplet nuclei. It also traps the carbon particles to restrict its emission in outer atmosphere.
  • the present invention is portable and easy to handle. The present invention finds its application almost in all the areas where the pathogenic material disposal is necessary.
  • the present invention mainly provides a biological waste incineration device (500) comprising a) an incineration compartment (100) having - a closed bottom end portion (10); a top end portion (60) being in shape of conical hood having provision for attachment of a tube; intact side surfaces (20 A) connecting said bottom end portion (10) with said top end portion (60) and having provision (95) for feeding biological waste material inside incineration compartment (100); - a loading plate (38) for collecting the fed biological waste material inside the incineration compartment (100) through provision (95); heating coil (s) (40) for incineration of biological waste material inside the incineration compartment (100); an ash tray (900) with a mesh (33) at its top portion being removably placed above the bottom end portion (10) for resting of unburned biological material on mesh for incineration and collection of the burned residue in the tray; b) a top compartment (300) being placed over the top portion (60) of said incineration compartment (100) and having - side surfaces (20B) reste
  • Additional filters namely glass fiber (50A), fine filter (50B) & coarse filter (50C) may also be placed above the opening (30A). These entrap the pathogens, dust particles. These filters may be fixed within a filter assembly (50) preferably in a linear fashion starting from the coarse filter (50A) near the opening (30A), then the fine filter (50B) next to it and followed by the glass fiber filter (50A).
  • the outer surface of the incineration compartment (100) is covered by a heat resistant material or a thermal insulation (100A) to prevent the heat transfer to surroundings and also to prevent the burns.
  • FIGURE 1 illustrates the sectional view of the biological waste incineration device of the present invention in its one embodiment.
  • FIGURE 1 The sectional view of the biological waste incineration device of the present invention constructed according to one of the preferred embodiment of invention is depicted in FIGURE 1, for explaining the components of the apparatus.
  • a biological waste incineration device which (500) comprises a) an incineration compartment (100) having a closed bottom end portion (10); - a top end portion (60) being in shape of conical hood having provision for attachment of a tube; intact side surfaces (20 A) connecting said bottom end portion (10) with said top end portion (60) and having provision (95) for feeding biological waste material inside incineration compartment (100); a loading plate (38) for collecting the fed biological waste material inside the incineration compartment (100) through provision (95); heating coil (s) (40) for incineration of biological waste material inside the incineration compartment (100); - an ash tray (900) with a mesh (33) at its top portion being removably placed above the bottom end portion (10) for resting of unburned biological material on mesh for incineration and collection of the burned residue in the tray; b) a top compartment (300) being placed over the top portion (60) of said incineration compartment (100) and having side surfaces (20B) reste
  • the closed bottom end portion (10), top end portion (60) and the intact side surfaces (20A) are made of stainless steel grades selected from 304/316/310.
  • the heating coil (s) (40) are heating filaments and are used for incinerating the biological material to ash.
  • the side surfaces (20A) have provision for inserting heating filaments (40A, 40B, 40C, 40D).
  • the number of heating coils to be used in the device depends on the load of biological material to be incinerated.
  • the device has provision for feeding (95) waste biological material inside said incineration compartment (100) is preferably a door or a hollow tube with door protruding outside the incineration compartment (100) from said side surface (20A).
  • the bottom end (10) has an ash tray placed on top of bottom end (10) which has mesh (33) on top side for placing the waste biological material and also has sliding function enabled for ease of emptying the collected ash from incineration process.
  • the tubular unit (70) comprises series of parallel pipes having curved bends at their ends to maintain parallelism. These pipes are made of alloy of silicone, carbon and carbide and hence maintain cool temperature within the pipe even if the lower heating coil (s) (40) is at very high temperature. At this temperature the micro-organisms get circulated in a loop and due to the specific design of tubular unit (70) they get adhered to inner surfaces of the pipeline.
  • the device has provision for cleaning, maintenance and repair etc, the incineration compartment (100) and top compartment (300) may be detachably connected with each other through the side surfaces (20 A & 20B). Such detachable connections may be the detachable screws for detachable attachments of the incineration compartment (100) and top compartment (300).
  • the outer surface of the incineration device (300) including the incineration compartment (100) is covered by a heat resistant material or a thermal insulation (100A) to prevent the heat transfer to surroundings and also to prevent the burns.
  • the thermal insulation material is selected from the group consisting of glass wool, rock wool, ceramic wool and any combinations thereof. More preferably the incineration compartment (100) is insulated by heat resistant material.
  • the device has a load plate (38) with load cell (39) positioned below it.
  • the waste biological material after loading do not directly fall on the ash tray but it rest on the weighing plate (38) made of stainless steel grades selected from 304/316/310.
  • the waste biological material feed from feeding provision (95) falls on the load plate; the load cell senses and measures the weight of the biological waste material fed.
  • This load cell (39) is put in contact with the thermostat (90) which triggers the electric action of heating coil (s) (40) in automotive mode. Heating coil (s) (40) generate desired heat in the incineration compartment (100).
  • Biological material rests on the mesh (33) of ash tray which is preferably made of stainless steel grades selected from 304/310/316.
  • the thermostat (90) switch on the heating coil (s) and control their temperature according to the weight of the fed biological water material.
  • the device invented can be used in programmable manner including programming the ignition temperature and time.
  • the thermostat and temperature sensors can be used for maintaining and manipulating the desired temperature considering the biological material to be incinerated. This offers complete automation without any human intervention making the device more efficient and user friendly.
  • the top end compartment (300) additionally has a provision to hold a removable scrubber loaded mesh (200).
  • the top portion hold the scrubber loaded mesh (200) during the operation of incineration device.
  • This provision include a slit made on any one of the side surfaces (20B) of the top compartment (300) and sliding mechanism on other side surfaces (20B) through which the scrubber loaded mesh (200) can be introduced in and be removed from the top compartment (300).
  • the scrubber is loaded on the mesh which has the side walls with sliding mechanism enabling its slide movement inside the top compartment (300). This enables the replacement and/or cleansing of the scrubber.
  • the scrubber is carbon trapping scrubber and the scrubber loaded mesh is placed above the tubular unit (70) for trapping the carbon particles. The air coming out from the tubular unit (70) is passed through the scrubber loaded mesh (200) which entraps the carbon particles from the air.
  • the mesh is made up of stainless steel- 304/316.
  • the scrubber is kept wet for trapping carbon particles by adsorption process of carbon particles.
  • an absorbent wick (80) is disclosed herein to keep the scrubber wet.
  • Said wick (80) has one end dipped into water reservoir (401) another end is put in contact with scrubber to keep it wet.
  • the water reservoir in the form of water tank is mounted on the side surface of top compartment (300).
  • the water tank has inlet (401B) and guarded by lid.
  • the outlet 401 C can be manually operated (401C).
  • a slot (400) is connected with water tank (401). And it is mounted for placing wick (80).
  • the absorbent material on one side get dipped in water tank and on another side get rested on scrubber. Thus it forms a bridge between water and scrubber compartment to maintain moisture in the scrubber. Any alternative suitable arrangement can also be implemented for this purpose.
  • a water supply provision for keeping the scrubber wet can be used.
  • the opening (30 A) may be fitted with a filter assembly (50).
  • a filter assembly Preferably it consist three layers of filters first being the coarse filter (50C) layer, second being the fine filter (50B) layer and third being the glass fiber filter (50A) layer.
  • these additional filters are implemented at the exit of soot and exhaust gases.
  • the sheet of filters mounted at the exhaust is covered by powder coated mesh on both the sides maintaining parallel air currents of the exhausted air.
  • a Filter assembly (50) having filters namely; coarse filter (50C), fine filter (50B) and fiber filter (50A), are for removal of pathogenic microorganisms, aerosol, droplets and droplet nuclei respectively.
  • the incineration compartment (100) and the top compartment (300) are made of stainless steel grades selected from 304/316/310.
  • the waste biological material is feed into the incineration compartment (100) and it is incinerated to ash by heating with heating coil (s) (40).
  • the soot and exhaust gas travel upside and pass through the tubular unit (70), the pathogenic micro-organisms, viruses in the soot and exhaust gas get adhered to the pipes inner surfaces while passing through the tubular unit (70).
  • the soot and exhaust gases pass through scrubber which entraps the carbon particles.
  • the soot and exhaust gases are then passed through filters fitted at the opening (30A). Finally it is released to outer atmosphere. Additionally if the filter assembly (50) is fitted at the opening (30A) then the filtered soot and exhaust gases are passed to the atmosphere.
  • the scrubber is kept wet using the water as explained above.
  • the ash is collected in the ash tray (900) and can be discarded by removing said ash tray out of the incineration compartment (100) after the incineration cycle completes.
  • the device (300) can be made using all the elements described hereinbefore or it can be made using the limited elements also as illustrated in example without deviating from the scope and spirit of the invention. The course of actions will take place in similar manner with the necessary modifications as per the presence or absence of few of the elements as mentioned in examples.
  • the present invention the device can be setup in hospitals for disposal of biological waste.
  • the waste products such as sanitary pads, soiled waste (contaminated with blood and body fluids including cotton, dressings, needles and soiled plasters, linen) can be incinerated through the present invention.
  • the incineration of such toxic waste helps in keeping hospitals and surrounding clean and prevents from spreading diseases from hospital waste.
  • the mounting of said incinerator do not require isolated plant/place and emissions are safe for the community.
  • a biological waste incineration device (500) as disclosed in Figure 1 was prepared from following materials:
  • the incineration compartment (100) and top compartment (300) may be detachably connected with each other through the side surfaces (20A & 20B) using detachable screws.
  • Standard suspension of Staphylococcus aureus was prepared containing 5X10 6 micro-organisms/ml.
  • Sanitary pad was soaked in 1ml of suspension. It was feed inside the incineration compartment.
  • Sterile Petri plates containing Mullar Hilton Agar were exposed for 10 minutes at the distance of 5 feet from the escape hole at the top end portion (30). The plates were incubated at 37°C for 24 hrs. Sanitary pads of same make and same weight were used for every separate experiment. Observations and Results:
  • the biological incineration device of current invention can be used for disposal of biological waste generated in hospitals, clinical laboratories, factories, offices, sanatoriums, public places like railway and bus stations, airports, railways, airplanes etc. It can be placed in residential areas, colonies also.
  • the filter assembly, scrubber etc. can be changed very easily to follow periodical change schedule or as per the requirements.
  • the whole device has been made in a very simple manner to enable easy maintenance. It is very economic also as the parts are cheaply available and can be replaced in wear and tear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

Invention relates to eco-friendly waste incineration device for biological waste. It avoids spread of disease causing micro-organisms in the environment. Microbial study carried out during operation of conventional incinerator machines had revealed the spread of pathogens even during actual operation of machine. The present invention is developed for overcoming the problems related with prior incineration machines. In this incinerator, the waste biological material is feed into the incineration compartment (100) and it is incinerated to ash by heating with heating coil (s) (40). The pathogenic micro-organisms, viruses in the soot and exhaust gas get adhered to the pipes while passing through the tubular unit (70). A scrubber placed (200) entrap the carbon particles and the carbon free gaseous material is released. The soot and exhaust gas travel upside and pass through the filter assembly (50).

Description

INCINERATOR FOR BIOLOGICAL WASTE
FIELD OF INVENTION
The invention relates to an economic and ecofriendly waste incineration device for biological waste. It avoids spread of the airborne diseases/pathogenic microorganisms in the environment.
BACKGROUND OF INVENTION
To the best of available resources and manpower every government take care of the citizens. For the same the government plans for various health schemes, make available the medicines through government hospitals, along with other facilities. Major revenue of the government get expended in controlling infectious diseases. Major spread of pyogenic pathogens takes place through the contaminated sanitary pads which get disposed unprocessed in the environment. As the organisms are heat resistant, even exposure to sunlight fails to curb the spread of pathogens. Present invention is aimed to stop the spread of pathogens associated with sanitary napkins/ hospital wastes.
There are many claims for the production of high absorbent and long lasting sanitary napkins and tampons. Long lasting napkins and tampons allows sufficient time for multiplication of pathogens. This increases total microbial load in the tempon/ sanitary napkins. Such sanitary napkins acts as a reservoir of disease causing organisms and if get disposed are likely to spread more pathogens in the environment. Many manufacturers have brought their sanitary pad incinerators in the market. Microbial study carried out during operation of such products has revealed the spread of pathogens even during actual operation of the machine. This spread takes place in the form of droplets or droplet nuclei. Droplets are microorganisms containing moisture and their size always remains about 10 microns. Such droplets can cross the distance in fetes. Sprays of droplets are called as aerosols. Droplet nuclei do not carry moisture and their size always remains below 10 microns. Droplet nuclei get generated when the fluid of pathogenic microorganisms evaporates. Such droplet nuclei (dried but alive form of pathogenic microorganisms) have the size of 1 to 5 microns. They are small, light weighted hence remain suspended in air for long time and may cross the distance in kilometers with wind currents hence remains powerful tool for infecting large mass of the community. All products relayed simply on the mechanical incineration by using heating coil (s) and no special provision is made for removal of pathogenic microorganisms. Hence during the operation of the incinerators these creates aerosols, droplets and droplet nuclei of pathogenic microorganisms. Also during incineration, release of carbon particles is another major issue.
The present invention is developed for overcoming the problems related with prior incineration machines. The incineration device of present invention is efficient and removes the pathogenic microorganisms, aerosols, droplets and droplet nuclei. It also traps the carbon particles to restrict its emission in outer atmosphere. The present invention is portable and easy to handle. The present invention finds its application almost in all the areas where the pathogenic material disposal is necessary.
SUMMARY OF THE INVENTION
The present invention mainly provides a biological waste incineration device (500) comprising a) an incineration compartment (100) having - a closed bottom end portion (10); a top end portion (60) being in shape of conical hood having provision for attachment of a tube; intact side surfaces (20 A) connecting said bottom end portion (10) with said top end portion (60) and having provision (95) for feeding biological waste material inside incineration compartment (100); - a loading plate (38) for collecting the fed biological waste material inside the incineration compartment (100) through provision (95); heating coil (s) (40) for incineration of biological waste material inside the incineration compartment (100); an ash tray (900) with a mesh (33) at its top portion being removably placed above the bottom end portion (10) for resting of unburned biological material on mesh for incineration and collection of the burned residue in the tray; b) a top compartment (300) being placed over the top portion (60) of said incineration compartment (100) and having - side surfaces (20B) rested over the side surfaces (20A) of the incineration compartment (100); a top end portion (30) with opening (30 A) for release of soot and exhaust gas; a tubular unit (70) comprising series of parallel pipes having curved bends at their ends to maintain parallelism which is connected to the top end portion (60) of incineration compartment (100) through the provision for attachment of tube in its top end portion (60) to collect the air coming out from incineration compartment (100) and diverting it towards the top end portion (30) of top compartment (300) for releasing it to the outer atmosphere through the opening (30A). Further, to trap the carbon particles a scrubber may be placed above the tubular unit (70).
Additional filters namely glass fiber (50A), fine filter (50B) & coarse filter (50C) may also be placed above the opening (30A). These entrap the pathogens, dust particles. These filters may be fixed within a filter assembly (50) preferably in a linear fashion starting from the coarse filter (50A) near the opening (30A), then the fine filter (50B) next to it and followed by the glass fiber filter (50A).
Wherever necessary, the outer surface of the incineration compartment (100) is covered by a heat resistant material or a thermal insulation (100A) to prevent the heat transfer to surroundings and also to prevent the burns.
Various aspects of the present invention herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF THE DRAWINGS
The embodiments herein will be better understood from the following detailed description with reference to the drawings, in which the reference numerals indicate:
Figure imgf000006_0001
Figure imgf000007_0001
Figure imgf000008_0001
FIGURE 1 illustrates the sectional view of the biological waste incineration device of the present invention in its one embodiment. DETAILED DESCRIPTION
As mentioned, there remains a long felt need for a biological waste incineration technology, which efficiently removes the pathogenic microorganisms, aerosol and droplet nuclei. And additionally trap the carbon particles to restrict its emission in outer atmosphere. The present invention tries to address this long felt need. Current invention provides an efficient, easy to handle, low cost maintenance biological waste incineration device. The present invention is portable and easy to handle. The present invention finds its application almost in all the areas where the pathogenic material disposal is necessary. The sectional view of the biological waste incineration device of the present invention constructed according to one of the preferred embodiment of invention is depicted in FIGURE 1, for explaining the components of the apparatus. Referring now to the FIGURE, where similar reference characters denote corresponding features consistently throughout the FIGURE, preferred embodiments are shown. In aspect of the present invention, it provides a biological waste incineration device which (500) comprises a) an incineration compartment (100) having a closed bottom end portion (10); - a top end portion (60) being in shape of conical hood having provision for attachment of a tube; intact side surfaces (20 A) connecting said bottom end portion (10) with said top end portion (60) and having provision (95) for feeding biological waste material inside incineration compartment (100); a loading plate (38) for collecting the fed biological waste material inside the incineration compartment (100) through provision (95); heating coil (s) (40) for incineration of biological waste material inside the incineration compartment (100); - an ash tray (900) with a mesh (33) at its top portion being removably placed above the bottom end portion (10) for resting of unburned biological material on mesh for incineration and collection of the burned residue in the tray; b) a top compartment (300) being placed over the top portion (60) of said incineration compartment (100) and having side surfaces (20B) rested over the side surfaces (20A) of the incineration compartment (100); a top end portion (30) with opening (30 A) for release of soot and exhaust gas; - a tubular unit (70) comprising series of parallel pipes having curved bends at their ends to maintain parallelism which is connected to the top end portion (60) of incineration compartment (100) through the provision for attachment of tube in its top end portion (60) to collect the air coming out from incineration compartment (100) and diverting it towards the top end portion (30) of top compartment (300) for releasing it to the outer atmosphere through the opening (30A).
In incineration compartment (100), the closed bottom end portion (10), top end portion (60) and the intact side surfaces (20A) are made of stainless steel grades selected from 304/316/310. The heating coil (s) (40) are heating filaments and are used for incinerating the biological material to ash. The side surfaces (20A) have provision for inserting heating filaments (40A, 40B, 40C, 40D). The number of heating coils to be used in the device depends on the load of biological material to be incinerated. In one embodiment of the present invention the device has provision for feeding (95) waste biological material inside said incineration compartment (100) is preferably a door or a hollow tube with door protruding outside the incineration compartment (100) from said side surface (20A). Further, the bottom end (10) has an ash tray placed on top of bottom end (10) which has mesh (33) on top side for placing the waste biological material and also has sliding function enabled for ease of emptying the collected ash from incineration process.
The tubular unit (70) comprises series of parallel pipes having curved bends at their ends to maintain parallelism. These pipes are made of alloy of silicone, carbon and carbide and hence maintain cool temperature within the pipe even if the lower heating coil (s) (40) is at very high temperature. At this temperature the micro-organisms get circulated in a loop and due to the specific design of tubular unit (70) they get adhered to inner surfaces of the pipeline. In another embodiment of the present invention the device has provision for cleaning, maintenance and repair etc, the incineration compartment (100) and top compartment (300) may be detachably connected with each other through the side surfaces (20 A & 20B). Such detachable connections may be the detachable screws for detachable attachments of the incineration compartment (100) and top compartment (300).
Also, wherever necessary, the outer surface of the incineration device (300) including the incineration compartment (100) is covered by a heat resistant material or a thermal insulation (100A) to prevent the heat transfer to surroundings and also to prevent the burns. The thermal insulation material is selected from the group consisting of glass wool, rock wool, ceramic wool and any combinations thereof. More preferably the incineration compartment (100) is insulated by heat resistant material.
In another embodiment of the present invention the device has a load plate (38) with load cell (39) positioned below it. The waste biological material after loading do not directly fall on the ash tray but it rest on the weighing plate (38) made of stainless steel grades selected from 304/316/310. The waste biological material feed from feeding provision (95) falls on the load plate; the load cell senses and measures the weight of the biological waste material fed. This load cell (39) is put in contact with the thermostat (90) which triggers the electric action of heating coil (s) (40) in automotive mode. Heating coil (s) (40) generate desired heat in the incineration compartment (100). Biological material rests on the mesh (33) of ash tray which is preferably made of stainless steel grades selected from 304/310/316. The thermostat (90) switch on the heating coil (s) and control their temperature according to the weight of the fed biological water material. Yet in another embodiment of the present invention the device invented can be used in programmable manner including programming the ignition temperature and time. The thermostat and temperature sensors can be used for maintaining and manipulating the desired temperature considering the biological material to be incinerated. This offers complete automation without any human intervention making the device more efficient and user friendly.
In yet another embodiment the top end compartment (300) additionally has a provision to hold a removable scrubber loaded mesh (200). The top portion hold the scrubber loaded mesh (200) during the operation of incineration device. This provision include a slit made on any one of the side surfaces (20B) of the top compartment (300) and sliding mechanism on other side surfaces (20B) through which the scrubber loaded mesh (200) can be introduced in and be removed from the top compartment (300). Preferably the scrubber is loaded on the mesh which has the side walls with sliding mechanism enabling its slide movement inside the top compartment (300). This enables the replacement and/or cleansing of the scrubber. More preferably the scrubber is carbon trapping scrubber and the scrubber loaded mesh is placed above the tubular unit (70) for trapping the carbon particles. The air coming out from the tubular unit (70) is passed through the scrubber loaded mesh (200) which entraps the carbon particles from the air. In preferred embodiment the mesh is made up of stainless steel- 304/316.
Preferably the scrubber is kept wet for trapping carbon particles by adsorption process of carbon particles. In preferred embodiment, an absorbent wick (80) is disclosed herein to keep the scrubber wet. Said wick (80) has one end dipped into water reservoir (401) another end is put in contact with scrubber to keep it wet. According to embodiment shown in figure 1, the water reservoir in the form of water tank is mounted on the side surface of top compartment (300). The water tank has inlet (401B) and guarded by lid. For removal of water when needed, the outlet 401 C can be manually operated (401C). A slot (400) is connected with water tank (401). And it is mounted for placing wick (80). The absorbent material on one side get dipped in water tank and on another side get rested on scrubber. Thus it forms a bridge between water and scrubber compartment to maintain moisture in the scrubber. Any alternative suitable arrangement can also be implemented for this purpose. A water supply provision for keeping the scrubber wet can be used.
For additional safeguard against the pathogens, the opening (30 A) may be fitted with a filter assembly (50). Preferably it consist three layers of filters first being the coarse filter (50C) layer, second being the fine filter (50B) layer and third being the glass fiber filter (50A) layer. Preferably where high precision is required to control, the spread of viruses, these additional filters are implemented at the exit of soot and exhaust gases. The sheet of filters mounted at the exhaust is covered by powder coated mesh on both the sides maintaining parallel air currents of the exhausted air.
A Filter assembly (50) having filters namely; coarse filter (50C), fine filter (50B) and fiber filter (50A), are for removal of pathogenic microorganisms, aerosol, droplets and droplet nuclei respectively.
For construction of fine filter stainless steel grades selected from 202/304/316/310 is used.
For construction of coarse filter stainless steel grades selected from 304/316/310 is used. For construction of the fiber filter (50A), glass fibers having diameter in range 0.5m to 2.0m are used. The glass fibers in the sheet are randomly arranged keeping air space within the fibers as greater than 0.3 m. The incineration compartment (100) and the top compartment (300) are made of stainless steel grades selected from 304/316/310.
For functioning of said device, the waste biological material is feed into the incineration compartment (100) and it is incinerated to ash by heating with heating coil (s) (40). The soot and exhaust gas travel upside and pass through the tubular unit (70), the pathogenic micro-organisms, viruses in the soot and exhaust gas get adhered to the pipes inner surfaces while passing through the tubular unit (70). Then the soot and exhaust gases pass through scrubber which entraps the carbon particles. The soot and exhaust gases are then passed through filters fitted at the opening (30A). Finally it is released to outer atmosphere. Additionally if the filter assembly (50) is fitted at the opening (30A) then the filtered soot and exhaust gases are passed to the atmosphere. The scrubber is kept wet using the water as explained above. The ash is collected in the ash tray (900) and can be discarded by removing said ash tray out of the incineration compartment (100) after the incineration cycle completes. The device (300) can be made using all the elements described hereinbefore or it can be made using the limited elements also as illustrated in example without deviating from the scope and spirit of the invention. The course of actions will take place in similar manner with the necessary modifications as per the presence or absence of few of the elements as mentioned in examples.
The present invention the device can be setup in hospitals for disposal of biological waste. The waste products such as sanitary pads, soiled waste (contaminated with blood and body fluids including cotton, dressings, needles and soiled plasters, linen) can be incinerated through the present invention. The incineration of such toxic waste helps in keeping hospitals and surrounding clean and prevents from spreading diseases from hospital waste. The mounting of said incinerator do not require isolated plant/place and emissions are safe for the community.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope.
Example:
A biological waste incineration device (500) as disclosed in Figure 1 was prepared from following materials:
Figure imgf000015_0001
Figure imgf000016_0001
Figure imgf000017_0001
Figure imgf000018_0001
Figure imgf000019_0001
Figure imgf000020_0001
Dimensions:
Internal volume of incineration compartment (100): 1.5 cubic feet Internal volume of top compartment (300): 1.5 cubic feet Internal diameter of tubular unit (70): 5 cm
The incineration compartment (100) and top compartment (300) may be detachably connected with each other through the side surfaces (20A & 20B) using detachable screws.
Experiments:
Four incineration devices with following specifications were tested for their efficiency of removing pathogens.
Figure imgf000020_0002
Figure imgf000021_0001
Standard suspension of Staphylococcus aureus was prepared containing 5X106 micro-organisms/ml. Sanitary pad was soaked in 1ml of suspension. It was feed inside the incineration compartment. Sterile Petri plates containing Mullar Hilton Agar were exposed for 10 minutes at the distance of 5 feet from the escape hole at the top end portion (30). The plates were incubated at 37°C for 24 hrs. Sanitary pads of same make and same weight were used for every separate experiment. Observations and Results:
Figure imgf000022_0001
* CFU: Colony forming units
Above observations and results show that the biological incineration device of current invention can be used for disposal of biological waste generated in hospitals, clinical laboratories, factories, offices, sanatoriums, public places like railway and bus stations, airports, railways, airplanes etc. It can be placed in residential areas, colonies also.
The filter assembly, scrubber etc. can be changed very easily to follow periodical change schedule or as per the requirements. In fact the whole device has been made in a very simple manner to enable easy maintenance. It is very economic also as the parts are cheaply available and can be replaced in wear and tear.

Claims

Ϊ We claim:
1. A biological waste incineration device (500) comprising a) an incineration compartment (100) having a closed bottom end portion (10); - a top end portion (60) being in shape of conical hood having provision for attachment of a tube; intact side surfaces (20 A) connecting said bottom end portion (10) with said top end portion (60) and having provision (95) for feeding biological waste material inside incineration compartment (100); a loading plate (38) for collecting the fed biological waste material inside the incineration compartment (100) through provision (95); heating coil (s) (40) for incineration of biological waste material inside the incineration compartment (100); - an ash tray (900) with a mesh (33) at its top portion being removably placed above the bottom end portion (10) for resting of unburned biological material on mesh for incineration and collection of the burned residue in the tray; b) a top compartment (300) being placed over the top portion (60) of said incineration compartment (100) and having side surfaces (20B) rested over the side surfaces (20A) of the incineration compartment (100); a top end portion (30) with opening (30 A) for release of soot and exhaust gas; - a tubular unit (70) comprising series of parallel pipes having curved bends at their ends to maintain parallelism which is connected to the top end portion (60) of incineration compartment (100) through the provision for attachment of tube in its top end portion (60) to collect the air coming out from incineration compartment (100) and diverting it towards the top end portion (30) of top compartment (300) for releasing it to the outer atmosphere through the opening (30A).
2. The biological waste incineration device (500) as claimed in claim 1, wherein the incineration compartment (100) is insulated by heat resistant material.
3. The biological waste incineration device (500) as claimed in claim 2, wherein the heat resistant material is selected from the group consisting of consisting of glass wool, rock wool, ceramic wool and any combinations thereof.
4. The biological waste incineration device (500) as claimed in claim 1, further comprises a thermostat unit (90) to control the temperature of heating coil (s) (40).
5. The biological waste incineration device (500) as claimed in claim 1, wherein the loading plate (38) has a load cell for sensing and measuring the weight of fed biological waste material.
6. The biological waste incineration device (500) as claimed in claims 4 and 5, wherein said load cell of the loading plate (38) is put in contact with thermostat unit (90) for controlling the temperature of heating coil (s) (40) according to the weight of fed biological waste material.
7. The biological waste incineration device (500) as claimed in claim 1, wherein the top compartment (300) additionally has a provision to hold a removable scrubber loaded mesh (200).
8. The biological waste incineration device (500) as claimed in claim 7, wherein the said top compartment (300) hold a removable scrubber loaded mesh (200).
9. The biological waste incineration device (500) as claimed in claim 8, wherein the said removable scrubber loaded mesh (200) has side walls with sliding mechanism for holding and enabling the sliding movement inside the top compartment (300).
10. The biological waste incineration device (500) as claimed in claims 7, 8 and
9, wherein the scrubber in said removable scrubber loaded mesh (200) is a carbon trapping scrubber.
11. The biological waste incineration device (500) as claimed in claim 7, 8, 9 and
10, wherein said incineration device (500) further additionally has a water supply provision for keeping the scrubber wet.
12. The biological waste incineration device (500) as claimed in claim 11, wherein said water supply provision for keeping the scrubber wet is an absorbent wick having one end dipped in a water reservoir and another end kept in contact with said scrubber.
13. The biological waste incineration device (500) as claimed in claim 1, wherein the opening (30A) for release of soot and exhaust gas at the top end portion (30) is fitted with a filter assembly (50).
14. The biological waste incineration device (500) as claimed in claims 13, wherein the filter assembly (50) consists of 3 layers of filters first being a glass fiber filter (50A) layer, second being a fine filter (50B) layer and third being a coarse filter (50C) layer.
15. The biological waste incineration device (500) as claimed in claim 1, wherein said provision for feeding (95) biological waste material inside said incineration compartment (100) is a door or a hollow tube with door protruding outside the incineration compartment (100) from said side surface
(20 A).
PCT/IB2020/054376 2019-08-14 2020-05-08 Incinerator for biological waste WO2021028729A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201921032976 2019-08-14
IN201921032976 2019-08-14

Publications (1)

Publication Number Publication Date
WO2021028729A1 true WO2021028729A1 (en) 2021-02-18

Family

ID=74570382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/054376 WO2021028729A1 (en) 2019-08-14 2020-05-08 Incinerator for biological waste

Country Status (1)

Country Link
WO (1) WO2021028729A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702039A (en) * 1970-08-31 1972-11-07 Torrax Systems Production of usable products from waste material
US3782301A (en) * 1972-04-21 1974-01-01 Shenandoah Mfg Co Inc Incinerator with stack transition chamber
US8523496B2 (en) * 2010-02-10 2013-09-03 Kior, Inc. Biomass feed system/process
CN203240589U (en) * 2013-03-07 2013-10-16 深圳市龙吉顺实业发展有限公司 Garbage incinerator using solar energy for power supply
CN208764938U (en) * 2018-08-01 2019-04-19 江苏迦楠环境科技有限公司 A kind of multiphase castoff burning system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702039A (en) * 1970-08-31 1972-11-07 Torrax Systems Production of usable products from waste material
US3782301A (en) * 1972-04-21 1974-01-01 Shenandoah Mfg Co Inc Incinerator with stack transition chamber
US8523496B2 (en) * 2010-02-10 2013-09-03 Kior, Inc. Biomass feed system/process
CN203240589U (en) * 2013-03-07 2013-10-16 深圳市龙吉顺实业发展有限公司 Garbage incinerator using solar energy for power supply
CN208764938U (en) * 2018-08-01 2019-04-19 江苏迦楠环境科技有限公司 A kind of multiphase castoff burning system

Similar Documents

Publication Publication Date Title
Lee et al. Medical waste management/incineration
AU2003269875B2 (en) Air decontamination devices
US5507859A (en) Safe collection and disposal of hazardous, dry particulate material
DK3097750T3 (en) Device for air disinfection and pollution removal
CN101069752A (en) Air decontamination devices
CN108662589B (en) Infectious Biohazard Waste processing system
JP2014110857A (en) Pollutant treatment apparatus and air cleanliness maintenance system using the same
KR20210037029A (en) Photocatalytic filter module and air cleaning device using the same
KR20150104062A (en) Air purifying device of air cleaner
WO2021028729A1 (en) Incinerator for biological waste
JP7121360B2 (en) Indoor climate control system
JP6436798B2 (en) Space cleaning equipment
RU152576U1 (en) DEVICE FOR THERMAL DISINFECTION AND DESTRUCTION OF MEDICAL WASTE
JPH1133325A (en) Apparatus for cleaning exhaust gas
Shang et al. Removal of virus aerosols by the combination of filtration and UV-C irradiation
CN207329401U (en) One kind can sterilize medical treatment and nursing contaminant collecting device
Barbeito et al. Microbiological safety evaluation of an industrial refuse incinerator
CN210135615U (en) Can prolong cigarette machine in cigarette machine air-out system life-span
KR20140035118A (en) The decontamination method of air and bad smell and thereof device
KR20130128246A (en) A air cleaner using pressurization
CN208362257U (en) A kind of house refuse cracking treatment system
CN114430686A (en) Method for automatic refuse chute ventilation for improving air quality
CN113660960A (en) Decontamination device and system
CN211625267U (en) Harmless treatment device for disposable mask
KR20160050890A (en) The removing method of smell and fine oil for kitchen hood and thereof device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20853253

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20853253

Country of ref document: EP

Kind code of ref document: A1