CA2285155A1 - Apparatus for burning off unprocessed gas - Google Patents

Apparatus for burning off unprocessed gas Download PDF

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Publication number
CA2285155A1
CA2285155A1 CA002285155A CA2285155A CA2285155A1 CA 2285155 A1 CA2285155 A1 CA 2285155A1 CA 002285155 A CA002285155 A CA 002285155A CA 2285155 A CA2285155 A CA 2285155A CA 2285155 A1 CA2285155 A1 CA 2285155A1
Authority
CA
Canada
Prior art keywords
combustion chamber
exhaust outlet
feed conduit
burner
exhaust
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.)
Abandoned
Application number
CA002285155A
Other languages
French (fr)
Inventor
David Stevens
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002285155A priority Critical patent/CA2285155A1/en
Publication of CA2285155A1 publication Critical patent/CA2285155A1/en
Abandoned legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/40Portable or mobile incinerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/72Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82Preventing flashback or blowback
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50Control or safety arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00Fittings for chimneys or flues 
    • F23J13/04Joints; Connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L11/00Arrangements of valves or dampers after the fire
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00Blast-producing apparatus before the fire
    • F23L5/02Arrangements of fans or blowers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N1/00Regulating fuel supply
    • F23N1/002Regulating fuel supply using electronic means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03009Elongated tube-shaped combustion chambers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00Control
    • F23G2207/10Arrangement of sensing devices
    • F23G2207/101Arrangement of sensing devices for temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00Control
    • F23G2207/40Supplementary heat supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00Chimneys or flues
    • F23J2213/20Joints; Connections
    • F23J2213/203Joints; Connections between stack/duct and combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00Chimneys or flues
    • F23J2213/70Safety arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00Special features of, or arrangements for combustion chambers
    • F23M2900/05001Preventing corrosion by using special lining materials or other techniques
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00Measuring
    • F23N2225/08Measuring temperature
    • F23N2225/10Measuring temperature stack temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00Valves, nozzles or pumps
    • F23N2235/02Air or combustion gas valves or dampers
    • F23N2235/04Air or combustion gas valves or dampers in stacks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Incineration Of Waste (AREA)

Abstract

An apparatus for burning off unprocessed gas includes a body having a first end, a second end, a top, and a bottom.
An elongate combustion chamber extends between the first end and the second end of the body. Combustion air is fed into the combustion chamber through an air inlet at the first end of the body. Unprocessed gases are fed into the combustion chamber through a vapour feed conduit. An igniter is provided which is adapted to ignite a mixture of unprocessed gases and combustion air. An exhaust outlet is provided which is in fluid communication with the combustion chamber and extends through the top at the second end of the body.

Description

TITLE OF THE INVENTION:
Apparatus for burning off unprocessed gas NAME ( S ) OF INVENTOR ( S ) David Stevens FIELD OF THE INVENTION
The present invention relates to an apparatus for burning off unprocessed gas.
BACKGROUND OF THE INVENTION
In the oil industry, many wells produce combustible waste gases. These gases must be disposed of in a safe manner. It is unacceptable to vent such gases to atmosphere, as they present a hazard to the environmental and public health. The gases also have the potential to create an explosive mixture with air.
When there is a continuing need for a waste gas burner, a permanent installation is installed. Permanent installations are expensive and are not readily moved from site to site.
Where there is a one-time or occasional need for a waste gas burner it is necessary to use a portable waste gas burning system.
One type of portable waste gas burning systems is a portable flare. The combustible waste gases are vented via a burner unit at which the gases are burned before being vented to the atmosphere. Flares can be at any height above the ground, but usually comprise a vertical tubular conduit, or "stack" , at a remote end of which the burner is placed. Flares can be mobile for movement from site to site. A mobile flare system must be dismantled or the stack must be lowered before the mobile flare can be relocated. One such system with a stack that can be pivotally moved to a travelling position is described in U.S. Patent 5,429,496, by Stephens and Duke.
SZT1~IARY OF THE INVENTION
The present invention relates to an alternative form of apparatus for burning off unprocessed gas.
According to the present invention there is provided an apparatus for burning off unprocessed gas which includes a body having a first end, a second end, a top, and a bottom. An elongate combustion chamber extends between the first end and the second end of the body. An air inlet is provided in fluid communication with the combustion chamber at the first end of the body, whereby combustion air is fed into the combustion chamber. A vapour feed conduit extends into the combustion chamber at the f first end of the body, whereby unprocessed gases are fed into the combustion chamber. An igniter is positioned within the combustion chamber at the first end of the body.
The igniter is adapted to ignite a mixture of unprocessed gases and combustion air as the unprocessed gases are fed through the vapour feed conduit mix with combustion air fed through the air inlet. An exhaust outlet is provided which is in fluid communication with the combustion chamber and extends through the top at the second end of the body.
Although beneficial results may be obtained through the use of the invention, as described above, even more beneficial results may be obtained when there is provided an electronic control unit. The control unit is in electronic communication with an electronic temperature sensor within the exhaust outlet, and an electronically operated control valve controlling the rate of feed of fuel through a fuel feed conduit to a burner which serves as an igniter. The rate of feed of fuel to the burner is thereby controlled to maintain exhaust gases flowing through the exhaust outlet at a temperature selected to maintain efficient operation of the apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a side view, in section, of the apparatus for burning off unprocessed gas constructed in accordance with the teachings of the present invention.
FIGURE 2 is a side view of the apparatus for burning off unprocessed gas illustrated in FIGURE l, mounted on a trailer bed, in a transport position.
FIGURE 3 is a side view of the apparatus for burning off unprocessed gas shown in FIGURE 1, mounted on a trailer bed, in an operational position.
FIGURE 4 is a detailed end view of a vapour distributor ring from the apparatus for burning off unprocessed gas shown in FIGURE 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, an apparatus for burning off unprocessed gas generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 4.
Referring to FIGURES 2 and 3, apparatus 10 is intended to be readily transportable with a vehicle 14, such as a trailer or a motorized vehicle, upon which apparatus 10 is mounted.
Referring to FIGURE 1, apparatus 10 includes a vapour feed system 18, a fuel feed system 20, and an exhaust system 22, all of which will be hereinafter further described.
Apparatus 10 has a body 24 has a first end 26, a second end 28, peripheral sidewalls 30, an outer surface 34, a top 36, and a bottom 38. An elongate combustion chamber 31 extends between first end 26 and second end 28. Combustion chamber 31 has an inner surface 32 that is lined with a refractory material. A first opening 40 is at top 36 at first end 26 of body 24. A second opening 42 is at bottom 38 at first end 26 of body 24. A third opening 44 is at top 36 at second end 28 of body 24. An air inlet 46 is in fluid communication with combustion chamber 31 at first end 26 of body 24. A flame arrestor 48 is positioned in air inlet 46. A motor driven fan 50 is used to force air, as indicted by arrow 52, through air inlet 46 past flame arrestor 48 and into combustion chamber 31.
Referring to FIGURES 2 and 3, a plurality of supports 54 are positioned on bottom 38 to support body 24. Although fan 50 is illustrated, it will be apparent that combustion air can be provided in alternative ways. Apparatus 10 can be built in a fashion similar to a chimney, with the flow out through exhaust system 22 draws air into combustion chamber 31. Other means of circulating air could also be used, such as an air compressor.
Referring to FIGURE 1, vapour feed system 18 includes a vapour distributor ring 56 positioned in combustion chamber 31 at first end 26 of body 24. A vapour feed conduit 58 is provided through which vapours are fed in a direction indicated by arrow 60 through first opening 40 to vapour distributor ring 56. A flash arrestor 62 is positioned on vapour feed conduit 58 outside body 24. A control valve (not shown) is also provided on vapour feed conduit 58. Referring to FIGURE 4, vapour distributor ring 56 has a thyroidal body 64 having sidewalk 66 forming a vapour feed passage 68, and a central passage 70. There are several outlets 72 from tubular feed passage 68 through sidewalls 66 by which vapour is fed into combustion chamber 31.
Referring to FIGURE l, fuel feed system 20 includes a burner 74 and a fuel feed conduit 76. Burner 74 has a co-axial igniter 76. Burner 74 is positioned within central passage 70 of vapour distributor ring 56. A fuel selected from hydrocarbon fuels is fed via fuel feed conduit 76 in a direction indicated by arrow 78 through second opening 42 to burner 74. A control valve 80 is positioned on fuel feed conduit 76 outside body 24. Control valve 80 has electrical wiring 82 by means of which control valve 80 is activated by an electrical signal.

Exhaust system 22 includes an exhaust outlet 90 in fluid communication with combustion chamber 31 and extending through top 36 at second end 28 of body 24. Exhaust system 22 also includes a tubular exhaust stack 84 having a first end 86 and 5 a second end 88 . First end 86 is open to the atmosphere .
Second end 88 is secured within third opening 44 at second end 28 of body 24. Tubular exhaust stack 84 has a first section 90 which is pivotally mounted at pivotal connection 91 to a second section 92 forming second end 88. A spark arrestor 94 and an electronic temperature sensor 96 are both located within tubular exhaust stack 84. First section 90 pivots relative to second section 92 enabling tubular exhaust stack 84 to be moved between a vertically extending an operating position, illustrated in FIGURE 3, and a transport position, illustrated in FIGURE 2.
A support 104 is mounted to top 36 of body 24 to support tubular exhaust stack 84 when it is in the transport position.
Referring to FIGURE 1, an electronic temperature control unit 106 is in electrical communication with temperature sensor 96 and control valve 80 of fuel feed system 20. The rate of feed of fuel to burner 74 is regulated so as to maintain exhaust gases flowing through exhaust system 22 at a temperature selected as indicating efficient operation. A
damper 108 is provided for control of exhaust gases in exhaust 22. A rain cap 110 is provided for covering first end 86 of tubular exhaust stack 84.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.

Claims (22)

1. An apparatus for burning off unprocessed gas, comprising a body having a first end, a second end, a top, a bottom, and an elongate combustion chamber that extends between the first end and the second end;
an air inlet in fluid communication with the combustion chamber at the first end of the body, whereby combustion air is fed into the combustion chamber;
a vapour feed conduit extending into the combustion chamber at the first end of the body, whereby unprocessed gases are fed into the combustion chamber;
an igniter positioned within the combustion chamber at the first end of the body, the igniter being adapted to ignite a mixture of unprocessed gases and combustion air as the unprocessed gases fed through the vapour feed conduit mix with combustion air fed through the air inlet;
an exhaust outlet in fluid communication with the combustion chamber and extending through the top at the second end of the body.
2. The apparatus as defined in Claim 1, wherein a flame arrestor is positioned in the air inlet.
3. The apparatus as defined in Claim 1, wherein a fan directs air through the air inlet.
4. The apparatus as defined in Claim 1, wherein a flash arrestor is positioned on the vapour feed conduit.
5. The apparatus as defined in Claim 1, wherein the vapour feed conduit includes a tubular distributor ring that encircles the igniter.
6. The apparatus as defined in Claim 1, wherein the exhaust outlet has a spark arrestor.
7 7. The apparatus as defined in Claim 1, wherein an electronic temperature sensor is positioned within the exhaust outlet.
8. The apparatus as defined in Claim 1, wherein the igniter is an open flame burner.
9. The apparatus as defined in claim 8, wherein an electronic control unit is provided in communication with a temperature sensor in the exhaust outlet and a control valve of a fuel feed conduit supplying fuel to the burner, the electronic control unit being adapted to regulate the supply of fuel to the burner so as to maintain exhaust gases flowing from the exhaust outlet at a selected temperature.
10. The apparatus as defined in claim 1, wherein the exhaust outlet has a tubular exhaust stack.
11. The apparatus as defined in Claim 10, wherein the exhaust stack is pivotally mounted to the exhaust outlet for movement between a vertically extending an operating position and a transport position.
12. The apparatus as defined in Claim 11, wherein a support is provided to support the exhaust stack in the transport position.
13. The apparatus as defined in claim l, wherein a damper is provided in the exhaust outlet.
14. The apparatus as defined in Claim 1, wherein the combustion chamber is lined with a refractory material.
15. An apparatus for burning off unprocessed gas, comprising a body having a first end, a second end, a top, a bottom, and an elongate combustion chamber that extends between the first end and the second end;
an air inlet in fluid communication with the combustion chamber at the first end of the body;
a flame arrestor positioned in the air inlet;
a fan forcing air through the air inlet past the flame arrestor and into the combustion chamber, whereby combustion air is fed into the combustion chamber;
a vapour feed conduit extending into the combustion chamber at the first end of the body, whereby unprocessed gases are fed into the combustion chamber;
a flash arrestor being positioned on the vapour feed conduit;
an open flame burner positioned within the combustion chamber at the first end of the body, the burner being adapted to ignite a mixture of unprocessed gases and combustion air as the unprocessed gases fed through the vapour feed conduit mix with combustion air fed through the air inlet;
a fuel feed conduit supplying fuel to the burner;
a control valve on the fuel feed conduit adapted to control the supply of fuel to the burner;
an exhaust outlet in fluid communication with the combustion chamber and extending through the top at the second end of the body;
an electronic temperature sensor positioned within the exhaust outlet;
an electronic control unit in communication with the temperature sensor in the exhaust outlet and the control valve of the fuel feed conduit supplying fuel to the burner, the electronic control unit being adapted to regulate the supply of fuel to the burner so as to maintain exhaust gases flowing from the exhaust outlet at a selected temperature.
16. The apparatus as defined in Claim 15, wherein the vapour feed conduit includes a tubular distributor ring that encircles the burner.
17. The apparatus as defined in Claim 15 wherein the exhaust outlet has a spark arrestor.
18. The apparatus as defined in claim 1, wherein the exhaust outlet has a tubular exhaust stack.
19. The apparatus as defined in Claim 18, wherein the exhaust stack is pivotally mounted to the exhaust outlet for movement between a vertically extending an operating position and a transport position.
20. The apparatus as defined in Claim 19, wherein a support is provided to support the exhaust stack in the transport position.
21. The apparatus as defined in claim 15, wherein a damper is provided in the exhaust outlet.
22. The apparatus as defined in Claim 15, wherein the combustion chamber is lined with a refractory material.
CA002285155A 1999-10-06 1999-10-06 Apparatus for burning off unprocessed gas Abandoned CA2285155A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002285155A CA2285155A1 (en) 1999-10-06 1999-10-06 Apparatus for burning off unprocessed gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002285155A CA2285155A1 (en) 1999-10-06 1999-10-06 Apparatus for burning off unprocessed gas

Publications (1)

Publication Number Publication Date
CA2285155A1 true CA2285155A1 (en) 2001-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002285155A Abandoned CA2285155A1 (en) 1999-10-06 1999-10-06 Apparatus for burning off unprocessed gas

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1870638A1 (en) * 2006-06-22 2007-12-26 Intherma Holding GmbH & Co. KG Installation for burning undesirable gases
EP2811229A1 (en) * 2013-06-04 2014-12-10 Endegs GmbH Transportable installation for burning unwanted gases
GB2518685A (en) * 2013-09-30 2015-04-01 A1 Sheet Metal Flues Ltd Improvements to the erection of flue systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1870638A1 (en) * 2006-06-22 2007-12-26 Intherma Holding GmbH & Co. KG Installation for burning undesirable gases
EP2811229A1 (en) * 2013-06-04 2014-12-10 Endegs GmbH Transportable installation for burning unwanted gases
GB2518685A (en) * 2013-09-30 2015-04-01 A1 Sheet Metal Flues Ltd Improvements to the erection of flue systems

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