GB2356159A - Process and device for the treatment of odour vapours emitted during the pumping of effluent - Google Patents

Process and device for the treatment of odour vapours emitted during the pumping of effluent Download PDF

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Publication number
GB2356159A
GB2356159A GB0024935A GB0024935A GB2356159A GB 2356159 A GB2356159 A GB 2356159A GB 0024935 A GB0024935 A GB 0024935A GB 0024935 A GB0024935 A GB 0024935A GB 2356159 A GB2356159 A GB 2356159A
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GB
United Kingdom
Prior art keywords
adsorbent
waste
vapours
discharge pipe
cleaning
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0024935A
Other versions
GB0024935D0 (en
GB2356159B (en
Inventor
Michel Ollivier
Jean-Pierre Lac
Jean-Loup Bernard
Guy Pouquet
Robert Faraudy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Filtration Systems SAS
Rivard SAS
Original Assignee
Rivard SAS
Sofrance SAS
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Publication date
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Publication of GB0024935D0 publication Critical patent/GB0024935D0/en
Publication of GB2356159A publication Critical patent/GB2356159A/en
Application granted granted Critical
Publication of GB2356159B publication Critical patent/GB2356159B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/304—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/306—Organic sulfur compounds, e.g. mercaptans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/406—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/93—Toxic compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/402—Further details for adsorption processes and devices using two beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/403—Further details for adsorption processes and devices using three beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0431—Beds with radial gas flow

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Water Treatment By Sorption (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

Process and device for the treatment of vapours emitted during the pumping of liquids containing inflammable and/or malodorous and/or toxic volatile compounds, in the course of cleaning operations or during a filling operation, in particular using extractor-hydrowashers. The process is characterised in that, before it is discharged into the atmosphere, the stream to be treated is passed through at least one purification device (9) where the volatile compounds present therein are adsorbed on a support based on fibres of activated carbon.

Description

2356159 Process and device for the treatment of valpour emitted during the
- pumping of liquids containina vo atile compounds in the course of cleaning and filling operations The present invention relates to a process for the treatment of vapours emitted during the pumping of effluents, noble products or liquid industrial or domestic waste containing compounds, especially inflammable and/or malodorous and/or toxic volatile organic compounds, in a cleaning installation, in particular an extractor-hydrowasher or equipment for pumping and transporting noble products.
Cleaning operations, necessitating the pumping of noble products, effluents or liquid waste, often have to be carried out in the industrial sector as well as in communities or in the homes of private individuals (filling and transporting of noble products, industrial cleaning, cleaning of drains, ditches, cleaning of sewage purification plants, fuel oil tanks, service station tanks,...). These cleaning or transporting operations are generally carried out by service providers using special adapted vehicles known as "extractor-hydrowashers" or any other mobile transport equipment or the like.
Those cleaning installations are, as a general rule, equipped with a cistern for collecting effluents or waste which, on the one hand, cooperates with a pump, especially a vacuum pump or a positivedisplacement pump, or is filled by gravity, and which, on the other hand, is associated with a flexible tube and also with a pipe for discharging into the atmosphere the vapours emitted by the pumped effluents or waste; the discharge pipe is preferably equipped with filtration devices and with a ventilating valve.
2 To be more precise, the effluents or noble products or waste can, in a first stage, be transferred into the cistern by pumping using a vacuum pump or optionally using a positivedisplacement pump or by gravity, but a vacuum pump is generally often used at the end of the pumping operation; this operation is also usually accompanied and/or followed by a final cleaning operation under pressure using water, at the end of which the dirty cleaning water is also re-pumped under vacuum in order to be collected in the cistern.
The effluents or waste pumped during those various operations very often contain compounds, in particular volatile organic compounds, which have the characteristic of being combustible, that is to say, they are at risk of igniting or possibly exploding when they are mixed with air, oxygen or another oxidant gas in a suitable proportion, in the presence of a source of ignition.
In order to quantify that risk, specialists have become accustomed to defining the concept of the lower ignition limit or lower limit of explosiveness of a gas or a vapour in air; that limit corresponds to the minimum concentration of the vapour above which the mixture may ignite or explode.
Specialists have also defined the concept of the flash point of a vapour in the presence of the liquid from which it originates: the flash point corresponds to the minimum tempera ture at which a mixture of the vapour and air can be ignited under normal pressure conditions. It should be noted that the flash point is close to the temperature at which the saturating vapour pressure enables the concentration corresponding to the lower limit of explosiveness to be reached, in its mixture with air.
3 In cleaning and filling operations of the above-mentioned type, the pumping of effluents or noble products or waste entails the emission of vapours which are discharged into the atmosphere by way of the discharge pipe. In the particular case of the use of a vacuum pump, such pumping can be subdivided into two distinct steps, namely a first step during which the stream of liquid pumped in the flexible suction tube is homogeneous and does not contain air, and the concentration of vapour at the exhaust outlet of the pump is at a maximum, and a second step during which the pumped effluent or waste no longer has a volume sufficiently large to ensure a homogeneous stream of liquid, and the pumped stream contains a gaseous phase formed principally from more or less vitiated air; this second step entails a higher degree of degassing of the effluent or waste with emission of vapours, the concentration of which may be more diluted.
During those two pumping steps, the lower limit of ignition or explosiveness may be reached, thus endangering the personnel involved in these operations and any person who may be near or in the sphere of influence of the gases so emitted, and also the environment.
In addition, the vapours emitted during the above-mentioned pumping or filling operations may also create an olfactory nuisance since they very often contain malodorous compounds (ammonia, hydrogen sulphide, mercaptans, acetic or butyric acid...) the presence of which may cause annoyance beyond a concentration of the order of 0.001 mg/Nm3.
Furthermore, the vapours emitted during the above-mentioned pumping or filling operations may also be toxic to organisms and may create a medical nuisance because they very often 4 contain cancer-producing, carcinogenic... compounds. This concept of toxicity is expressed by the LVE (limiting value of exposure) thresholds which are set by official medical bodies.
It should also be noted that the authorities have established standards relating to emissions into the atmosphere, which, in all probability, will become increasingly strict in the future; the result is that pumping under vacuum may be forbidden in some activities, in particular industrial activities.
The aim of the present invention is to overcome those disadvantages by proposing a process for the treatment of vapours emitted during the pumping of effluents, noble products or liquid industrial or domestic waste, with a cleaning installation of the above-mentioned type, which is capable of eliminating olfactory nuisance and also the risks of ignition and explosion in order to enable pumping operations under vacuum to be carried out in given activities where they have hitherto been prohibited, while at the same time respecting current or future legislation concerning the emission of odours and volatile organic compounds into the atmosphere.
To that end, the invention relates to a process of the above-mentioned type, characterised in that, before it is discharged into the atmosphere, the gas stream to be treated is passed through at least one purification device where the volatile compounds present therein, which are principally inflammable, toxic and/or malodorous, are adsorbed on a support based on fibres of activated carbon.
In the case of a cleaning installation comprising a cistern associated with a discharge pipe equipped with a vacuum pump, the purification device may advantageously be mounted on the discharge pipe, upstream of that pump, in order to prevent it from becoming saturated with a spray of oil or water which may be formed thereby. A purification device can, however, be placed downstream of the vacuum pump, and it is also possible to mount two purification devices on the discharge pipe, one upstream and the other downstream of the vacuum pump.
In the case of a cleaning installation equipped with a cistern which, on the one hand, cooperates with a flexible tube on which a positivedisplacement pump is mounted, and which, on the other hand, is associated with a discharge pipe provided with a ventilating valve, the purification device is necessarily mounted on the discharge pipe, upstream of that valve.
In the case of a cleaning installation equipped with a cistern which cooperates, on the one hand, with a flexible tube for the purpose of filling by gravity and, on the other hand, with a discharge pipe provided with a ventilating valve, the purification device is necessarily mounted on the discharge pipe, upstream of that valve.
The present invention relates also to a purification device enabling the above-mentioned process to be implemented.
According to the invention, the device is constituted by a tank closed by a cover, the tank comprising an inlet orifice and an outlet orifice for the gas stream to be treated and being provided at its internal portion with at least one removable cartridge which is equipped with an adsorbent 6 support based on fibres of activated carbon and which is designed in such a manner that it can be incinerated after use without generating waste.
According to a preferred feature of the invention, the adsorbent support is constituted by at least one layer of a woven fabric of activated carbon or by another adsorbent material having similar adsorption kinetics - in particular by activated carbon powder - which is kept folded with at least one layer of a support cloth, especially based on a thermoplastic material (polypropylene, polyamide, polyester, polyethylene. ..) or on another material or mixture of materials which can be incinerated without leaving waste.
The support cloth may be in the form of compacted fibres or in the form of a lattice or in the form of a woven fabric.
According to another particularly advantageous feature of the invention, the adsorbent cartridge is constituted by a tubular member closed by a plate at its respective ends and comprising an internal tube and/or an external tube which are substantially coaxial and which are produced from a synthetic lattice material and between which the adsorbent support based on fibres of activated carbon is inserted.
The internal tube and the external tube enable the rigidity of the adsorbent cartridge to be maintained and the handling thereof to be facilitated; they may be formed from extruded polypropylene or other materials, the destruction of which by incineration does not generate waste (polyethylene, polyamide...).
For their part, the plates are preferably formed from a polyolefin-based heat-fusible resin or from other materials, 7 the destruction of which by incineration does not generate waste, such as ashes, clinker, toxic gases, for example from epoxy resin, polyester, heat-fusible polyamide....
It should be noted that such an adsorbent cartridge can be traversed by the gas stream to be treated, either from the outside to the inside or from the inside to the outside.
An adsorbent cartridge so designed has the advantage that it is very light, easy to handle, can be incinerated without waste and has a very high degree of independence and a very high degree of efficiency. Experience has shown that such a cartridge is capable of eliminating odours and of adsorbing almost all of the volatile organic compounds which are generally met in cleaning or filling operations of the abovementioned type.
Of course, depending on the type of operation used and its size, the tank may be equipped with only one or with several adsorbent cartridges arranged in series or in parallel.
According to another feature of the invention, the purification tank is subdivided by a separating partition into two compartments, of which the one, or first compartment, comprises the inlet orifice for the gas stream to be treated while the other, or second compartment, comprises the outlet orifice for that stream.
According to the invention, the separating partition is advantageously provided with at least one opening which is extended into the first compartment by a perforated distributor tube on which at least one adsorbent cartridge is slipped so that the gas stream to be treated necessarily 8 has to pass through that or those cartridges before entering the second compartment.
In order to permit such positioning of the adsorbent cartridges, it is of course necessary for the central portion of at least one of the plates to be provided with an opening.
One characteristic of the invention consists in treating the gas stream arriving in a turbulent state in the purification tank by radial adsorption through the cartridge in a laminar state then in discharge in turbulent tangential flow by means of the distributor tube.
According to another feature of the invention, the adsorbent cartridge(s) is(are) held in place by the cover of the tank, preferably by means of holding springs.
The features of the process and of the device to which the invention relates will be described in more detail with reference to the appended drawings in which: - Figure 1 is a diagrammatic representation of a cleaning or filling installation equipped with a vacuum pumpf - Figure 2 is a diagrammatic representation of a cleaning or filling installation equipped with a positive-displacement pump, - Figure 3 is a diagrammatic representation of a cleaning or gravity filled installation, - Figure 4 is a sectional view of a purification tank, - Figure 4a is a top view of the separating partition, - Figure 5 is a perspective view of an adsorbent cartridge, - Figure 6 is a sectional view of an adsorbent cartridge slipped onto a distributor tube.
9 According to Figure 1, the cleaning installation, which may, in particular, correspond to an extractor-hydrowasher, has the function of pumping effluents, noble products or liquid waste 1 contained in a volume 2 in order to transfer them to a cistern 3.
To that end, the cistern 3 is equipped, on the one hand, with a flexible tube 4 which can be immersed in the volume 2 to permit the pumping of the effluents, noble products or waste 1 contained therein according to arrow a and, on the other hand, with a pipe 5 permitting the discharge into the atmosphere of the vapours emitted by the effluents, noble products or waste 1, when they are being pumped according to the arrows b.
The discharge pipe 5 is equipped with a vacuum pump 6 and with filtration devices 8 enabling the gas stream to be treated to undergo a physical transformation.
According to the embodiment represented in Figure 1, the discharge pipe 5 is also equipped with two purification devices 9, 91 which will be described in more detail hereinafter and the fuhction of which is to permit the adsorption, on a support based on activated carbon, of inflammable and/or malodorous and/or toxic compounds present in the gas stream before the stream is discharged into the atmosphere. One of the purification devices 9 is mounted upstream of the vacuum pump 6 in the direction of circulation b of the gas stream to be treated, while the other purification device 91 is mounted downstream of that pump.
Of course, the discharge pipe could contain only one purification device 9 or 9' without departing from the scope of the invention.
According to Figure 2, the effluents, noble products or waste 1 contained in the volume 2 are pumped by positive displacement into the cistern 3; to that end, a positivedisplacement pump 10 is mounted on the flexible tube 41 which is immersed in the volume 2 in order to pump the effluents, noble products or waste contained therein according to arrow a.
As in the configuration example represented in Figure 1, the cistern 3 is associated with a pipe for discharging into the atmosphere, according to the arrows b, the vapours emitted by the effluents, noble products or waste 1 when they are being pumped. The discharge pipe 5 is equipped with a ventilating valve 7 and also with a purification device 9 mounted upstream of the ventilating valve 7 in the direction of circulation b of the gas stream to be treated.
According to Figure 3, the effluents, noble products or waste 1 contained in the volume 2 are charged by gravity into the cistern 3; to that end, the cistern 3 is connected to the volume 2 by a flexible tube 42 permitting the transit of the effluents, noble products or waste according to arrow a.
As in the configuration example represented in Figure 2, the cistern 3 is associated with a pipe for discharging into the atmosphere, according to the arrows b, the vapours emitted by the effluents, noble products or waste 1 during transit. The discharge pipe 5 is equipped with a ventilating valve 7 and also with a purification device 9 mounted upstream of the ventilating valve 7 in the direction of circulation b of the gas stream to be treated.
I According to the embodiments represented in Figures 1, 2 and 3, regardless of the filling system(s) which may be associated therewith, the purification device 9 and/or 91 is always the same, given that the discharge pipe 5 is identical between the cistern 3 and the purification device.
According to Figure 4, the purification device 9 is constituted by a tank 11 closed by a cover 12 and comprising an inlet orifice 13 and an outlet orifice 14 for the gas stream to be treated; the orifices are extended by connecting tubes 131, 141 enabling the tank 11 to be mounted on the discharge pipe 5 of the cleaning installation (Figures 1 and 3). The stream to be treated therefore circulates in the tank 11 in accordance with the arrows b.
The purification tank 11 is also subdivided into two compartments 15, 16 by a separating partition 17 which, in the configuration example represented in Figure 4a, comprises three openings 18.
The first compartment 15 comprises the inlet orifice 13 while the second compartment 16 comprises the outlet orifice 14.
As represented in Figure 4, the openings 18 in the separating partition 17 are each extended into the first compartment 15 by a perforated distributor tube 19 on which is slipped an adsorbent cartridge 20 which will be described in more detail hereinafter and which is held in place by the cover 12 by means of holding springs not shown in the Figures.
Bearing that configuration in mind, the gas stream to be treated coming from the first compartment 15 (arrow b) must 12 necessarily be transferred to the internal portion of the distributor tubes 19 through the adsorbent cartridges 20 before entering the second compartment 16.
Of course, the separating partition 17 could comprise a number of openings 18 other than three without departing from the scope of the invention; it should be noted that, in a manner not shown, it would also be possible to use a separating partition comprising only one opening which is extended by a very long distributor tube on which several adsorbent cartridges may be slipped in series.
According to Figures 5 and 6, each of the adsorbent cartridges 20 is constituted by a tubular member designed in such a manner that it can be incinerated after use without generating waste. That member is closed at its respective ends by two plates 21, 22, of which one, 21, is solid while the other, 22, comprises a central opening 23 enabling the cartridge 20 to be positioned on a distributor tube 19, as represented in Figure 6.
The tubular member 20 is delimited by two coaxial tubes produced from a 'synthetic lattice material, namely an external tube 24 and an internal tube 25 between which is inserted an adsorbent support 26 based on fibres of activated carbon which is not shown in detail in Figure 6.
13

Claims (11)

1. Process for the treatment of vapours emitted during the pumping of effluents, noble products or liquid industrial or domestic waste containing volatile compounds which are principally inflammable, toxic and/or malodorous, in a cleaning installation or during a filling operation, in particular an extractor-hydrowasher, or equipment for pumping and transporting noble products, equipped with a cistern (3) for collecting the effluents or waste (1) which, on the one hand, cooperates with a pump, especially a vacuum pump (6) or a positive-displacement pump (10), or is filled by gravity, and which, on the other hand, is associated with a f lexible tube (4, 41, 42) and with a pipe (5) which discharges into the atmosphere the vapours emitted by the pumped effluents, noble products or waste and which is preferably equipped with filtration devices (8) and with a ventilating valve (7), characterised in that, before it is discharged into the atmosphere, the gas stream to be treated is passed through at least one purification device (9, 9') where the volatile compounds present therein are adsorbed on a support (26) based on fibres of activated carbon.
2. Process for the treatment of vapours in a cleaning or filling installation equipped with a cistern (3) associated with a discharge pipe (5) equipped with a vacuum pump (6) according to claim 1, characterised in that the discharge pipe (5) is provided with a purification device (9) mounted upstream of the vacuum pump (6).
3. Process for the treatment of vapours in a cleaning or filling installation equipped with a cistern (3) associated with a discharge pipe (5) equipped with a vacuum pump (6) 14 according to either claim I or claim 2, characterised in that the discharge pipe (5) is provided with a purification device (91) mounted downstream of the vacuum pump (6).
4. Process for the treatment of vapours in a cleaning or filling installation equipped with a cistern (3) which cooperates with a flexible tube (41), on which a positivedisplacement pump (10) is mounted, and which is associated with a discharge pipe (5) provided with a ventilating valve (7) according to claim 1, characterised in that the pipe (5) is provided with a purification device (9) mounted upstream of the ventilating valve (7).
5. Process for the treatment of vapours in a cleaning or filling installation equipped with a cistern (3) which cooperates with a flexible tube (42) permitting the transit by gravity of the effluents, noble products or waste and which is associated with a discharge pipe (5) provided with a ventilating valve (7) according to claim 1, characterised in that the pipe (5) is provided with a purification device (9) mounted upstream of the ventilating valve (7).
6. Purification device for implementing the process according to any one of claims I to 4, characterised in that it is constituted by a tank (11) closed by a cover (12), the tank comprising an inlet orifice (13) and an outlet orifice (14) for the gas stream to be treated and being provided, at its internal portion, with at least one removable cartridge (20) which is equipped with an adsorbent support (26) based on fibres of activated carbon and which is designed in such a manner that it can be incinerated after use without generating waste.
7. Device according to claim 6, characterised in that the adsorbent support (26) is constituted by at least one layer of a woven fabric of activated carbon or by another adsorbent material having similar adsorption kinetics - in particular by activated carbon powder - which is kept folded with at least one layer of a support cloth, especially based on a thermoplastic material (polypropylene, polyamide, polyester, polyethylene...) or on another material or mixture of materials which can be incinerated without leaving waste.
8. Device according to either claim 6 or claim 7, characterised in that the adsorbent cartridge (20) is constituted by a tubular member closed by a plate (21, 22) at its respective ends and comprising an internal tube (25) and/or an external tube (24) which are substantially coaxial and which are produced from a synthetic lattice material or perforated material and between which the adsorbent support (26) based on fibres of activated carbon is inserted.
9. Device according to any one of claims 6 to 8, characterised in that the purification tank (11) is equipped with one or more adsorbent cartridge(s) (20) arranged in series or in parallel.
10. Device according to either claim 8 or claim 9, characterised in that the purification tank (11) is subdivided by a separating partition (17) into two compartments, of which the one, or first compartment (15), comprises the inlet orifice (13) for the gas stream to be treated while the other, or second compartment (16), comprises the outlet orifice (14) for that stream, the separating partition (17) being provided with at least one opening (18) which is extended into the first compartment (15) by a perforated distributor tube (19) on which at least one adsorbent 16 cartridge (20) is slipped so that the gas stream to be treated necessarily has to pass through that or those cartridge(s) (20) before entering the second compartment (16).
11. Device according to any one of claims 6 to 10, characterised in that the adsorbent cartridge(s) (20) is(are) held in place by the cover (12) of the tank (11), preferably by means of holding springs.
GB0024935A 1999-10-12 2000-10-11 Process and device for the treatment of vapour emitted during the pumping of liquids containing volatile compounds in the course cleaning and filling operatio Expired - Fee Related GB2356159B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9912678A FR2799389B1 (en) 1999-10-12 1999-10-12 PROCESS AND DEVICE FOR TREATING VAPORS EMITTED DURING THE PUMPING OF LIQUIDS CONTAINING VOLATILE COMPOUNDS DURING CLEANING OR FILLING OPERATIONS.

Publications (3)

Publication Number Publication Date
GB0024935D0 GB0024935D0 (en) 2000-11-29
GB2356159A true GB2356159A (en) 2001-05-16
GB2356159B GB2356159B (en) 2002-02-13

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BE (1) BE1013897A3 (en)
CH (1) CH691348A5 (en)
DE (1) DE10050939B4 (en)
DK (1) DK200001522A (en)
ES (1) ES2169695B1 (en)
FR (1) FR2799389B1 (en)
GB (1) GB2356159B (en)
IT (1) IT1319197B1 (en)
NL (1) NL1016366C2 (en)
SE (1) SE522820C2 (en)

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CN106422649A (en) * 2016-12-06 2017-02-22 南京大学环境规划设计研究院有限公司 Integrated laboratory mixed waste gas purification device and purification method
FR3059995B1 (en) 2016-12-09 2021-08-13 Suez Groupe VENT STRUCTURE OF AN EFFLUENT PUMPING UNIT, AND ASSOCIATED PUMPING UNIT

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Also Published As

Publication number Publication date
SE0003636D0 (en) 2000-10-09
ATA17272000A (en) 2001-06-15
GB0024935D0 (en) 2000-11-29
BE1013897A3 (en) 2002-12-03
NL1016366C2 (en) 2002-11-15
FR2799389B1 (en) 2001-12-07
ES2169695A1 (en) 2002-07-01
ITMI20002192A1 (en) 2002-04-11
GB2356159B (en) 2002-02-13
DE10050939B4 (en) 2006-06-14
DE10050939A1 (en) 2001-05-17
ES2169695B1 (en) 2003-11-01
SE522820C2 (en) 2004-03-09
SE0003636L (en) 2001-04-13
NL1016366A1 (en) 2001-04-17
IT1319197B1 (en) 2003-09-26
DK200001522A (en) 2001-04-13
CH691348A5 (en) 2001-07-13
AT408618B (en) 2002-01-25
FR2799389A1 (en) 2001-04-13

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