The Bunsen Nozzles
-
Upload
loesche -
Category
Technology
-
view
260 -
download
3
description
Transcript of The Bunsen Nozzles
Loesche ThermoProzess GmbH • Uechtingstraße 19 / Gebäude D9 • D-45881 GelsenkirchenTel. +49 - 209 - 36 17 22 - 0 • Fax: +49 - 209 - 36 17 22 - 180Email: [email protected] • Internet: www.loesche-tp.de
1/2 en
The Bunsen nozzlesWhen it comes to low-pressure, small gas burners, Bunsen nozzles have advanced signi�cantly:
• althoughsmallindesign,theiroutputisveryhigh
•theyaretoleranttoimpactandinsensitivetocondensate
•theyaremadeofsteelandthusarehighlyreliable(SEP nozzles are also available in brass)
•thelargecross-sectionoftheexitboresmakesclogging almost impossible
•theyareblow-backproof
Bunsennozzlesareperfectlysuitedforbottomtotopbur-ningoftheflame.Forcompletecombustiontotakeplace,they require not only primary air but also require secon-daryair thatmustbesupplied to theflamefrombelow.Dependingonthesizeoftheheatedsurface,theremustbesufficientspacebelowtheburnerforthesupplyofthecombustion air. The installation of a flow safety deviceaccordingtoTRVisnecessary,iftheexhaustgasesarechanneledintoachimneystack.
Inordertodimensionthenozzleboreforgasmixtures,werequire the upper calori�c value and the gas pressure, as wellastheexactcomposition.Underconsiderationofthe
spacings listed in the table, the Bunsen nozzles can be assembled based on the requirements into longitudinal, ringandstar formationsor anyother configuration.Weproduce standard low-pressure burners in a variety of designs;pleaseaskfortherespectivebrochures.
Amongst other things, the Bunsen nozzles described hereareusedforthefollowingapplications:
•Low-pressurestar-typeburners•Low-pressureringburners
We plan, manufacture and deliver complete heatingequipmentfortheentireindustry.Pleaseaskforadditional documentation.
SEP nozzles Bunsen M-P nozzles Sz-Mz-Pz nozzles Sz nozzles
Low-pressure star-type burners Low-pressure ring burners
1302715_LTP_FLY_Bunsenduesen_2S_en.indd 1 30.07.13 11:45
Loesche ThermoProzess GmbH • Uechtingstraße 19 / Gebäude D9 • D-45881 GelsenkirchenTel. +49 - 209 - 36 17 22 - 0 • Fax: +49 - 209 - 36 17 22 - 180Email: [email protected] • Internet: www.loesche-tp.de
2/2 en
Bunsen all-gas nozzles SEPTheBunsenall-gasnozzletypeSEPmaketheconversiontonaturalgaseasy.Inordertoconvertfromcitygas(gridgas)tonaturalgas,asmallnozzleinsertmustbeinstalled.It can be simply screwed into the burner's shaft. The flame is very stable, which is achieved by a flame-re-tainingringthatbranchesofffromthemainmixture'sflowbeneaththemainflame.Thestrengthoftheflamecanbemodifiedandsettoavarietyoflimitsbysimplyreplacingthenozzleinsert.Thewide-rangingflamesmaketheoverignition from nozzle to nozzle easier and at the same time promote a uniform secondary air supply through the combus-tion chamber. Con-version to liquid gas and all other common gas/air mixtures areeasy. When using liquid gas, the shaftand the nozzle insert must be replaced.
Gases with the sameWobbe number (e.g., rich gas andnatural gas) do not require the replacement of this noz-zle insert.Theflamesofbothgasesburnwiththesamestrengthandwithoutanyconversion.Whenusingcitygas(gridgas),naturalgasandliquidgasthestrengthoftheflamecanbeadjustedbychanging theboresizeof thenozzle insert (increments from1.9 to3kW).Thenozzlecanalsobesuppliedfor3.5kWandasaspecialdesignfor4.7kW.However,itisnotavailableforliquidgas.
Bunsen-M-nozzles for natural gas and Bunsen-P- nozzles for liquid gasaresuitableforfiringnaturalgasandnaturalgas/airmix-tures,orliquidgasandliquidgas/airmixtures.
Bunsen Sz, Mz, and Pz nozzles for city, natural and liquid gas arealsosuitableforburninghorizontallydirectedflames.Thisdoesnotapplytonozzleswithstar-shapedflames.Theseburnersareusedinparticularforheatingtheside-wallsofcontainers,whichleavesthebottomofthecon-tainerunheated.
The Bunsen nozzles
Nozzle head
Nozzle cover
Flame-retaining ringNozzle shaft
Mixing channel
Nozzle insertAir intake bore
Type of nozzle
Thermal output kW Gas pressure mbarNozzle height
Diameter or length and width
Nozzle spacing (centre to centre)
Distance upper edge of nozzle from heating surface
City gas Natural gas Liquid gas City gas Natural gas Liquid gas mm mm mm mmSEP 1600 1.9 1.9 1.9 6 20 50 57 26 70–80 50–60
SEP 2000 2.3 2.3 2.3 6 20 50 57 26 80–90 60–70
SEP 2600 3.0 3.0 3.0 6 20 50 57 26 80–90 80–90
SE 3000 3.5 3.5 – 6 20 – 57 26 90–100 90–110
SE 4000 4.7 4.7 – 6 20 – 57 26 80–100 100–120
Sz 0,5 1.1 – – 6 – – 62 70 x 26 90 80–90
Sz 1,0 4.2 – – 6 – – 75 100 x 30 120 90–100
P 14 – – 1.7 – – 50 75 32 60–70 50
P 21 – 2.7 – – 50 75 34 70–80 60–70
P 30 – 3.8 – – 50 75 34 80–90 80
Pz 14 – 1.7 – – 50 87 70 x 28 80 50
Pz 21 – 2.7 – – 50 105 100 x 30 110 60
PL 21 – 3.8 – – 10–15 75 34 80–90 80
M 103 – 2.7 – – 10 – 75 32 60–80 60
M 203 – 2.7 – – 20 – 75 32 60–80 60
M 303 – 2.7 – 30 – 75 32 60–80 60
M 503 – 2.7 – – 50 – 75 32 60–80 60
M 104 – 3.8 – – 10 – 75 32 80–90 80
M 204 – 3.8 – – 20 – 75 32 80–90 80
M 304 – 3.8 – – 30 – 75 32 80–90 80
M 504 – 3.8 – – 50 – 75 32 80–90 80
Mz 103 – 2.7 – – 10 – 103 100 x 30 110 110
Mz 203 – 2.7 – – 20 – 103 100 x 30 110 110
Mz 303 – 2.7 – – 30 – 103 100 x 30 110 110
Mz 503 – 2.7 – – 50 – 103 100 x 30 110 110
AllnozzlesuseathreadedconnectionR1/8" Bunsen-nozzlesforallotheroutputsandgaspressuresuponrequest
1302715_LTP_FLY_Bunsenduesen_2S_en.indd 2 30.07.13 11:45