CA2038328C - Air filtration system for volatil organic products with one or several successive activated carbon filters and integrated washing device - Google Patents

Abstract

The air filtration apparatus described here has a chamber where one or more filters containing activated charcoal are located, and making it possible to bring in stale air and to extract filtered air therefrom. This appliance also has an integrated system capable of washing the active material of the activated carbon from the filters with hot water jets. The washing system with hot water allows the desorption of Volatile Organic Products (POV) captured by activated carbon filters in the form of a more or less oily liquid, which can be recovered or not according to a more or less complex system for recovering liquids. The filters after having been washed by the action of the washing system with hot water, can be reused as they are. The integrated washing system will operate when the air inlet and outlet are stopped.

Description

-DESCRIPTIVE MEMORY
Figure 1 shows a profile view of the the filtration device. We also see the main piping parts for washing the filters, and drain the waste water after washing. We sees the different containers allowing the recovery of waters.
Figure 2 shows a profile plan of the structure of filters containing activated charcoal.
Figure 3 shows a front view of the filter part in the bedroom.
~ Figure 1, we see the structure of the chamber (15) which must be made of a non-corrosive material. Stale air which is activated by an independent ventilation system enters through an entrance (8). ~ after having passed through all filters, this air will exit through the outlet (7). Figure 1 shows a room that contains 3 filters, but it could contain from one to many other filters. Filters are demonstrated by the numbers 1, 2, and 3.
In the same figure, we still see the inlet pipes (5) pressurized hot water to wash the filters.
This water will pass through one or more directing places (6) washing water (depending on the number of filters). This washing system will operate when the fans will stop bringing air into the room. Water after washing will be recovered by a recovery failure (9) bringing the water through pipes (10) to a container of recovery (11) of oils and other desorbed products.
The liquid levels (14) which will be non-missible in the water can be collected by the adjustable orifice (19). A
valve (1 ~) will allow the washing water whose products non missiles have been removed be sent to another container (12) which will allow the recovery of water that can ~ be reused. Recovery container water (12) will be drained by a valve (20).
Figure 2 shows us specifically the structure of activated carbon filters. A frame (18) made of non-corrosive material connects two walls ~ made of material non-corrosive) (16) which allow air to pass through and firmly retain activated carbon particles (16) placed in the center of these two walls.
Figure 3 shows the effect of a hot water nozzle on the walls of a filter.

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-The general nature of the item category or genre of process to which the invention relates is quite broad. This system can be applied as is for any kind of air filtration to extract organic products Volatile as well as semi-volatile organic products (made volatile due to the high temperature).
The scale of this filtration system can be ~
applied to small and large quantities of products a filter ~ ranging from the purification of the hoods of deep fryers Snacks, chemical plant needs ...).
The creative idea behind this system is specifically that effective cleaning can be done filters without the need to change them the manipulators. This periodic cleaning should allow a much more intensive use and increase the effectiveness of filters significantly, while being low cost.
Hot water as a cleaning agent is available everywhere in quantity at a good price and will do the trick for washing and desorbing volatile organic products. Filters may be changed but certainly at intervals much larger, allowing our device a maintains much less costly.
The washing mechanism being very simple can be done by anyone, and not at risk, when employed in a normal way ~ Installation of the device will be easy and without risk.
The applications will be very varied, depending on the size of the chamber, the surface of the filters, the air quantities to filter etc ... ~ From home appliance to systems required by industrial needs) The advantages of this system:
1- Increased durability of filters without changes

2- ~ increased filtration efficiency at POVs

3- Need for changes and maintenance of filters extremely minimal, se

4- Hot water ~ usually used for water from washing) is an affordable product available, and is also very effective for extracting POVs from filters and especially semi-volatile substances

5- The usual construction structures allow easily to the installation of such a system without danger.

6- The installation will not require specialists

7- No risks to safety or health with use normal

8- Extremely simple mechanism ,, 203 ~ 328

9- Costs which should be low overall

10- Recovery of washing water possible, as well as certain body fluids from POVs.

Disadvantages: No disadvantages noted ...

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Claims (4)

1- Activated carbon filtration device comprising a chamber containing one or more activated carbon filters, and an integrated and permanent washing system manual operation of hot water jets, allowing washing or desorption of volatile organic products having been adsorbed. 2- The device as defined in 1-, with filters replaceable. 3- The device as defined in 1-, with in addition a separation system for organic products insoluble in wash water. 4- The device as defined in 3-, with in addition a system for recycling washing water separated from products insoluble organic.