bulletin e3501 rev06 06/03/03 nozzle mix burnersbulletin e3501 rev06 06/03/03 2/25 description...

Bulletin E3501 rev06 06/03/03

NOZZLE MIX BURNERSNM SERIES

FEATURES

• Mixer body: Cast iron G25• Plate: Cast iron G25• Air tube: AISI 304• Operation with pre-heated air up to: 450°• Adequate to different types of gas: CH4/L.P./propane/etc.• Standard refractory block max. temp.: 1750°C• Capacity range: 10 to 3700 kW• Single tunnel turndown range: 10:1• Multiple tunnel turndown range: 60:1• Excellent flame stability: excess air

excess fuelon ratio firing

• Low NOx level.• Wall mounting flanges to fasten the block holder to the furnace

shell are threaded to allow for positioning of accessories: pilotburner, flame detectors (electrodes or UV scanners), peepsight.

• Separated air and gas inlets, mixing at discharge point, noflashback.

APPLICATIONS

• Tank melting kilns for frits.• Billets reheating furnace.• Aluminium melting furnace.• Forging furnaces.• Air heaters.• Heat treat furnaces.• Incinerators.• Stress Relieving Furnaces.• Brick furnaces.• Ladle and crucible melting reheating.• Driers.

F3501I01

F3501I02

HeadquartersEsa S.r.l.

Via E. Fermi 40 I-24035 Curno (BG) - ItalyTel. +39.035.6227411 - Fax +39.035.6227499

[email protected] - www.esapyronics.com

International SalesPyronics International S.A./N.V.

Zoning Ind., 4ème rue B-6040 Jumet - BelgiumTel +32.71.256970 - Fax +32.71.256979

[email protected]


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DESCRIPTION

Nozzle Mix Burners are high flame, high capacity units. Gas and airare mixed only at the point of discharge. The swirling air streamproduces a negative vortex at the block mouth. Fuel enters thevortex mixing rapidly, producing intense combustion.Nozzle Mix burners may work both with cold and pre-heated airallowing for 25 to 30% saving. When cold air is entrained,modulation of the main air valve, from a temperature controllersignal, changes the air pressure and the air flow to the burner. Withequal or proportional air and gas pressure drops across both orifices,

the flows will always maintain correct ratios.In case of pre-heated air, modulation of the butterfly valve, locatedupstream of the heat exchanger, from a temperature controllersignal, changes the air pressure and the air flow to the burner.Flanged Orifice Plate meters at convenient point in the air and gassupply lines to the burners measure flows. The air impulse to theBalanced Zero Regulator will modulate the gas outlet pressure toalways equal the air pressure.

INSTALLATION

NM burners are usually mounted on the wall. Other mountingpositions are not recommended; specify if it is absolutely requiredwhen you order it.The furnace refractory should be set to leave some room on all sidesof the block. This space should be packed with flexible, refractory,ceramic fiber protected by 20 mm of refractory concrete on all sides

to allow for expansion of the walls (see technical note). Flexibleconnector are recommended for air and gas connections at theburner to allow slight movement or misalignment of piping and arerequired when pre-heated air is involved. Air and gas connectionsare Pyronics’ standard threaded, welding flanged type. They mayrotate by 90°.

IGNITION AND FLAME DETECTION

NM burners must be ignited at low fire with a PBST blast pilot.Pilot burner must be switched off after ignition of main burner thusflame detection must be done by counterclockwise UV Scanner. Forlow capacity burners direct spark ignition may be done through

electrodes WAND or DSE. In this case UV-2 ultraviolet scanners mustbe used.Flame detection systems are required on all burners with furnacetemperatures below 750°C.

Catalog No.

101 NM

201 NM

301 NM - 601 NM

1001 NM - 1501 NM

2501 NM

4001/6001/8001 NM

P42PBST-W/X

P42PBST-W/X

P64PBST

P64PBST

P86PBST

P86PBST

UV-2 / Wand *

UV-2 / Wand *

UV-2 / 6EN-150 *

UV-2 / 6EN-300 *

UV-2 / 6EN-300 *

UV-2 / 6EN-300 *

14MM

Wand - 201 NM

DSE - 1

DSE - 1

(not available)

(not available)

UV-2

UV-2

UV-2

UV-2

(not available)

(not available)

Ignition Detection Ignition DetectionPilot burner ignition Electrode ignition

(*) In most cases, we suggest you to make flame detection through UV- scanner. In some particular cases, it is possible to use continue pilotburner with detection electrode.


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CAPA

CITY

TABL

E

Single

tunne

l

101

NM3 /

4”3 /

8”10

1521

2629

3336

4146

150÷

200

201

NM1.

1 /4”

3 /4”

2129

4151

5966

7283

9320

0÷30

0

301

NM1.

1 /2”

1”31

4462

7688

9810

812

313

920

0÷50

0

601

NM2”

1.1 /

4”62

111

123

152

176

196

215

246

278

250÷

850

1001

NM

3”1.

1 /4”

103

147

205

255

293

328

357

410

463

300÷

1000

1501

NM

3”1.

1 /2”

167

220

293

381

440

498

542

615

703

600÷

1250

2501

NM

4”2.

1 /2”

258

366

519

633

733

820

897

1037

1157

760÷

1500

4001

NM

6”3”

410

586

820

1014

1172

1313

1436

1641

1852

1200

÷200

0

6001

NM

8”3”

615

879

1231

1524

1758

1963

2154

2461

2784

1800

÷250

0

8001

NM

8”3”

828

1172

1656

2031

2344

2623

2872

——

2400

÷350

0

17.6

(1)

Pipe s

ize

Aria

Gas

Maxim

um ca

pacity

in kW

at va

rious

air an

d gas

pressu

res at

burne

r (in

mbar)

2.24.4

8.813

.222

.026

.435

.244

.0 (3

)

Flame

length

mm

(2 )

Notes

:1) N

omina

l max

imum

capa

city r

ange

.2)

Flam

e dim

ensio

ns ar

e app

roxim

ate,

refe

rred t

o bur

ners

feed

ed w

ith CH

4, wo

rking

at st

oichio

metri

c rat

io, in

free

air.

Value

s are

inclu

ded i

n a r

ange

: mini

mum

value

is re

ferre

d to b

urne

r wor

king a

t nom

inal c

apac

ity (1

), hig

her v

alue a

t max

imun

capa

city (

3).

2002

NM

4”2

x 1.

1 /4”

205

293

410

507

586

656

718

820

926

300÷

1000

4004

NM

6”4

x 1.

1 /4”

410

586

820

1014

1172

1313

1436

1641

1852

300÷

1000

6006

NM

8”6

x 1.

1 /4”

615

879

1231

1524

1758

1963

2154

2461

2784

300÷

1000

1000

4 NM

10”

4 x

2.1 /

2”10

2614

6520

5125

4929

3032

8235

7541

0246

3076

0÷15

00

1200

2 NM

10”

2 x

3”12

4517

5824

9130

4735

1639

2743

0749

8155

6718

00÷2

500

1600

2 NM

10”

2 x

3”16

5623

4433

1140

5846

8852

4557

43—

—24

00÷3

500

1800

3 NM

12”

3 x

3”18

6126

3737

2145

7152

7458

9064

4774

4383

5118

00÷2

500

2400

3 NM

12”

3 x

3”24

9135

1649

8160

9570

3378

5386

15—

—24

00÷3

500

3200

4 NM

14”

4 x

3”33

1146

8866

2281

1793

7710

490

1148

7—

—24

00÷3

500

4800

6 NM

20”

6 x

3”49

8170

3399

6312

1914

065

1573

517

230

——

2400

÷350

0

17.6

(1)

Pipe s

ize

Aria

Gas

Maxim

um ca

pacity

in kW

at va

rious

air an

d gas

pressu

res at

burne

r (in

mbar)

2.24.4

8.813

.222

.026

.435

.244

.0 (3

)

Flame

length

mm

(2 )

Multip

letun

nel


4/25

CAPACITY TABLE

5

50

50 500 500015

01N

M

1001

NM

601N

M

301N

M

201N

M

101N

M

2501

NM

4001

NM

6001

NM

8001

NM

1

10

100

10 100 1000 10000

5

50

500 5000 50000

1600

2NM

1200

2NM

1000

4NM

6006

NM

4004

NM

2002

NM

1800

3NM

2400

3NM

3200

4NM

4800

6NM

1

10

100

100 1000 10000 100000G3501I02Capacity (kW)

Air p

ressu

re (m

bar)

G3501I01Capacity (kW)

Air p

ressu

re (m

bar)


5/25

FLOW CHART (COLD AIR)

Pos.

1

2

3

4

5

6

7

8

Model Identification

Main gas ball valve

Balanced Zero Regulator

Impulse line

Motorized air valve

Electric control

Gas ball valve

Main burner solenoid, safety gas valve

Orifice flow meter for ∆P gas

D3501I01

Pos.

9

10

11

12

13

14

15

16


Orifice flow meter for ∆P airManual air butterfly valve

Main burner

Pilot burner

Pilot burner solenoid, safety gas valve

Ignition transformer

Flame detection

UV Scanner


6/25

FLOW CHART (PRE-HEATED AIR)

D3501I02

Pos.

1

2

3

4

5

6

7

8

9

10


Main gas ball valve

Balanced Zero Regulator

Impulse line

Calibrated orifice for ∆P airElectric control

Motorized air valve

Regulator flow control

Heat exchanger

Gas ball valve at each burner

Main burner solenoid, safety gas valve

Pos.

11

12

13

14

15

16

17

18

19


Orifice flow meter for ∆P gasOrifice flow meter for ∆P airManual air butterfly valve

Main burner

Pilot burner

Pilot burner safety gas valve

Ignition transformer

Flame detection

UV scanner


7/25

DIMENSIONS (101 NM)

D3501E03

D3501E04


8/25

DIMENSIONS (201 NM)

D3501E05


9/25

D3501E06

DIMENSIONS (301 NM / 601 NM)

Catalog no.

301 NM-F-R301 NM-GA-R601 NM-F-R

601 NM-GA-R

A

G - 1.1/2"G - 1.1/2"

G - 2"G - 2"

B

G - 1"G - 1"

G - 1.1/4"G - 1.1/4"

Cmm709583

108

Dmm108108114114

Catalog no.

301 NM-F-S301 NM-GA-S601 NM-F-S

601 NM-GA-S

A

G - 1.1/2"G - 1.1/2"

G - 2"G - 2"

B

G - 1"G - 1"

G - 1.1/4"G - 1.1/4"

Cmm709583

108

Dmm108108114114

D3501E07


10/25


Catalog no.

1001 NM-F-S1001 NM-GA-S1501 NM-F-S1501 NM-GA-S

A

G - 3"G - 3"G - 3"G - 3"

B

G - 1.1/4"G - 1.1/4"G - 1.1/2"G - 1.1/2"

Cmm95

12495

133

Dmm121121127127

D3501E09

Catalog no.

1001 NM-F-R1001 NM-GA-R1501 NM-F-R1501 NM-GA-R

A

G - 3"G - 3"G - 3"G - 3"

B

G - 1.1/4"G - 1.1/4"G - 1.1/2"G - 1.1/2"

Cmm95

12495

133

Dmm121121127127

D3501E08


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D3501E10

DIMENSIONS (2501 NM-R)

D3501E11


12/25

DIMENSIONS (2501 NM-S)

D3501E26

D3501E27


13/25

DIMENSIONS (4001 NM-R)

D3501E13

D3501E12


14/25

DIMENSIONS (4001 NM-S)

D3501E24

D3501E25


15/25

DIMENSIONS (6001 NM-R / 8001 NM-R)

D3501E15

D3501E14


16/25

D3501E16

DIMENSIONS (2002 NM)


17/25


D3501E17


18/25


D3501E18


19/25


D3501E19


20/25


D3501E20


21/25


D3501E21


22/25


D3501E22


23/25


D3501E23

MASS

101 NM

201 NM

301 NM

601 NM

1001 NM

2002 NM

4004 NM

6006 NM

1501 NM

2501 NM

10004 NM

4001 NM

6001 NM

8001 NM

12002 NM

16002 NM

18003 NM

24003 NM

32004 NM

48006 NM

13.5

—

45.0

45.0

71.0

—

300.0

520.0

70.0

158.0

885.0

260.0

330.0

330.0

1860.0

1860.0

1960.0

1990.0

2290.0

2920.0

6.14

—

20.45

20.45

32.27

—

136.36

236.36

31.82

71.82

402.27

118.18

150.00

150.00

845.45

845.45

890.91

904.55

1040.91

1327.27

14

21

50

50

100

148

—

—

95

260.0

—

330.0

—

—

—

—

—

—

—

—

6.36

9.55

22.73

22.73

45.45

67.27

—

—

43.18

150.0

—

150.0

—

—

—

—

—

—

—

—

Catalog no.Lbs kg Lbs kg

Round Square


24/25


25/25

NOTE: Based on the company’s policy aimed at a continuous improvement on product quality, ESA-PYRONICS reserves the right tobring changes to the technical characteristics of this device without previous notice. O

WARNING: When operating, this combustion system can be dangerous and cause harm to persons or damage to equipment. Everyburner must be provided with a protection device that monitors the combustion. The installation, adjustment and maintenanceoperations should only be performed by trained and qualified personnel.

ur catalog updated to the latest version isavailable on our web site www.esapyronics.com and it is possible to download modified documents

BH

-

REFRACTORY BLOCK

Round block RSquare block S

--

MODEL

101NM 101201NM 201301NM 301... (see capacity table) .....

GAS AJUSTER

With Gas Adjuster GAWithout Gas Adjuster F

REFRACTORY BLOCK ALLOYJACKET

Without alloy jacket 2With alloy jacket DWith short alloy jacket SC

NM

ORDERING CODES - BURNER

ORDERING CODES - REFRACTORY BLOCK ONLY

-

REFRACTORY BLOCK

Round block RSquare block S

--

MODEL

101NM 101201NM 201301NM 301... (see capacity table) .....

REFRACTORY BLOCK ALLOYJACKET

Without alloy jacket 2With alloy jacket DWith short alloy jacket SC

NM

bulletin e3501 rev06 06/03/03 nozzle mix burnersbulletin e3501 rev06 06/03/03 2/25 description...

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