"取扱説明書"
Contents
1. HB Without center air the flame tends to curl up ducere rd um d 0 7 IR 1 2 3 10 1 M bp The center air effect ensures a correct direction of the flame and its stability so that a high turn down may be achieved As the gas burner load is decreased the flow rates of fuel gas and combustion air lower at the nozz2. Reheating furnaces for steel mills heat treating furnaces melting furnaces ladle preheating and drying equipment incinerators boilers petroleum heating furnaces etc DESIGNATION Symbol Combustion air temperature 450C 450C or lower 1 2 CONSTRUCTION 1 2 1 10 10 sizes as standards Oil OG FHC Ilc G FHC Ilc G gas burner Combustion air di Burner body Built in butterfly valve
3. Pilot gas Note 1 Pilot burner should be mounted above the horizontal axis TUS 2 For further details of pilot burner refer to the instruction manual of the pilot Voc Ai Z Air burner Flame detecting method ASTU 0 Spark plug PIPING DIAGRAM Gas burner Temperature Air flow indicating Gas flow indicating indicating Pressure indicating controller controller controller controller UE eiie E a i i 9 Recuperator B i n BEMA un udis X 6 0 S x Flow Se 2 A A c control valve e P oli i To each zone To each burner Turbo blower Orifice Micromano p Center air X D Expansion joint Dex VEQ Er x To each zone To each burner Butterfly valve built in 1 1 V 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I 1 t k I 1 A To the atmosphere
4. 2 94kPa 2 94kPa 4 5 El 3 WWRCERUE Combustion air pressure KPa 0 71 Coefficient 0 58 f STANDARD ACCESSORIES The following accessories are supplied unless otherwise specified Combustion air butterfly valve built in 1 Gas burner 1 each Sight hole Combustion air butterfly valve built in FLISI S HB 81 Oil burner Model HB sprayer 1 each Sight hole SPECIAL ACCESSORIES Order as required Valve for center air Gas burner Gas shutoff valve Oil shutoff valve Compressed air or steam shutoff valve Oil burner
5. DE xj Micromano meter Y FHC IIc GZ 3 J l gt lt Lu Gas flow meter v lva B FHC 1Ilc G burner Y i T 3 BERIA T paee i N N X WEE p ped 35 Ded H EHH p 7 US e M meter To each zone ped be To each burne amp Regulating cock L Ia X No Dex Der Purge PIPINg P To each zone i Jl O71 F Oil burner C mS Temperature Oil flow indicating indicating Pressure flow regulator controller controller A X Ban BIA J RS LLI Air flow indicating NolL i i conroller 14 i iL RI X imeem s i i D dey i 9 Thermocouple OW p m control valve xe m To each zone NOrifice T Turbo blower ER To each burner Closed during Operation TORTOR E Mera amp L4u o P From each zone w Butterfly valve built in Expansion joint E 2 i Flow control To each burner _ p Oil flow Ma valve 46
6. Hand valve for controlling oil and compressed air or steam Flexible tube for oil and compressed air or steam Common to MPN gas burner and oil burner Model MPN pilot burner 2 94kPa Note 1 For the gas burner the standard fuel gas and center air supply pressure is 2 94kPa and the standard fuel gas and center air supply temperature is 30C For the oil burner the oil supply pressure and compressed air steam supply pressure should be 294kPa so that the model HB sprayer can be used Refer to the model HB sprayer catalog for the detail The firing rates listed above are values at the combustion air pressure of 2 94kPa If the combustion air pressure is lower or higher than 2 94kPa correct the firing rate with the coefficient given below The combustion air pressure indicates the burner differential pressure The gas connection diamater is subject to change by the firing rate 1kPa 102mmH20 4 41 0 82 0 91 1 00 1 08 1 15 1 22 SELECTION OF MODELS 10000 mia 1 1 Burner model E n A FHC Ilic 80 O A A eE FHC Ilc 50 Bao E EE ERAT FHC Ilc 40 FHC Ilc 35 Z7 FHC Illc 30
7. MEAE Burner model Firing rate FHC Ic 10 G 698kW 200A Rc 20A 25A 40A 335 410 470 510 918 500 280 100 120 340 260 208 280 27 FHC Iic 13 G 930KW 200A Rci 25A 32A 40A 350 425 505 555 938 520 280 100 130 350 270 215 290 27 FHC Mc 15 G 1163KW 250A Rc34 25A 32A 50A 375 450 530 580 1018 540 310 110 140 380 290 225 300 32 FHC Mc 20 G 1453KW 300A Rc34 32A 40A 50A 400 480 560 610 1068 560 340 110 150 440 340 243 310 32 FHC IIc 30 G 1860kW 300A Rci 32A 40A 65A 445 515 595 645 1132 585 350 130 160 450 350 261 340 38 FHC IIc 35 G 2326kW 350A Rci 40A 50A 80A 485 555 635 685 1182 605 370 140 180 520 400 285 360 38 FHC lic 40 G 2907KW 400A Rc114 40A 50A 80A 510 595 675 725 1263 635 400 150 190 570 440 307 380 46 FHC Mc 50 G 3488KW 400A Rc114 50A 65A 100A 550 635 715 765 1313 670 410 155 200 590 460 330 400 46 FHC llc 65 G 4651KW 400A Rc112 50A 65A 100A 620 705 785 835 1375 725 410 160 240 610 480 369 430 48 FHC IIc 80 G 5814KW 500A Rcll2 65A 80A 100A 685 770 850 900 1550 850 460 160 270 710 580 407 470 48 33 zs HB T _ HQ where iE 1 KiB Lg H0 MJ m normal Note 1 K value vyg Kvalue Scale of calorific value of fuel gas y9 kom normal Hg Lower calorific value of E gas MJ m3 onna M BO T y9 Specific weight of fuel gas kg m normal i A A RN RO 2 If K value is less t
8. FHC Hc 20 FHC Ilc 15 NN NN N NI FHC mc 13 Combustion airtemperature ui 2 FHC Ilc 10 C uS Ses d SES SO A 7 4 AA AL AL TIT 7 Ai EUM 1 7 ME IVY 1 y T YA MLB 0203 05071 2 3 57 Combustion air pressure kPa AAAA 1 L NNYNN NN t 7 ji 28 P2 r a N LLN s N Firing rate kW FHC lc NOx mi 2 94kPa 450C FHC Illc 20 Ze x J B 1450kW Refer to the diagram for the selection of a suitable model considering the combustion air pressure combustion air temperature excess air ratio and firing rate Example Combustion air pressure 2 94kPa Combustion air temperature 450C Excess air ratio 1 1 Firing rate 1450kW Model FHC Ilc 20 will be selected MOUNTING DIMENSIONS FHC Ic G FHC Ic G gas burner MO ARA Combustion air A Q LP U Je J91uo2 Ej ij i C Fuelgas C Gas burner Pipe connection
9. MPN2D MPN ID qn we of pilot burner CG u Town gas natural gas propane or butane ne ma coman eaaa at nn Ba cw lm temperatures does not need continuous firing of FHC Scu the pilot burner If the furnace is frequently turned Mounting onto on and off or is operated at low temperatures FHC lllc burner continuous firing of the pilot burner is required Flame detector Behind pilot buner location Monitoring of pilot burner flame Monitoring of main burner flame after pilot burner is turned off Ignition Automatic ignition by spark plug and manual ignition by torch burner 1 2
10. 7C NOx 10000 7 NOx Low NOx variable flame high turn down use Of preheated air The FHC Ic low NOx burner offers various porperties to meet all the requirements of steel mill furnace application More than 10000 FHC burners have been employed in the modern reheating furnaces enjoying great popularity abroad as well as in Japan 1 Low NOx and low noise An ideal two stage combustion system reduces the generation of thermal NOx and fuel NOx to a very low level Its combustion noise level is low 2 Variable flame Even during operation the flame length can be freely adjusted by the flame pattern regulating valve to provide optimal temperature distribution in the furnace according to furnace geometry and operating conditions 3 Heat flux suited for homogeneous heating The flat curve in the heat flux characteristics allows a homogeneous heat distribution even if the flame pattern is changed 4 Low excess air combustion The low excess air ratio of 1 05 is attained in the firing range of 20 to 10096 5 Wide turn down range The turn down ratio greater than 10 1 is attained for a wide variety of furnace application APPLICATIONS
11. Co O COG M Z Mixed gas AC Heavy oil Ato C 0 86 1 30 0 0 5 1 1 5 2 2 5 3 0 86 1 30 Kerosene L 1 1 ERN E L Id 4 P m E B M E MO En E UT 0 4 100 200 300 1400 500 0600 m 700 Preheated air temperature C ad 60 1 1 1 1 1 9 1 1 1 1 1 1 mE NENRERNEMEUEUNE LE E EN 74 STIY NN E HE E E E sS AEE EED AANENNENE 0 2 800 900 1000 1100 1200 1300 1400 Furnace temperature C Fuel NOx 10MJ m normal EN el MILII 0 0 2 0 4 ES Fuel N DPA 96 oil Burner load 26 Fuel N Gas in g m normal Oil in wt 96 oil M ws M Mgas 10 20 30 40 50 60 70 80 90 100 Fuel NOx ppm O 1 19635 3 Fuel NOx ppm in 1196 Oscorrection FLAME DIMENSIONS FHC Ic NOx XFXxFs Fir Fz The flame pattern of the burner varies with such factors as firing rate type of fuel and burner load The flame pattern of the FHC c low
12. Rear cover Burner tile Handle rotor Handle and pointer ry Center ai Sight hole amp IN Gas nozle Gas pipe and Sight hole center air pipe Rotary valve Example Installation to axial flow burning furnace Example Installation to side burning furnace Optimal flame pattern can be obtained irrespective of furnace width Symbol Fuel K Dual fuel oil gas Note 1 Please let us know the kind and supply pressure of the fuel gas to be used when ordering the gas burners or the kind of the fuel oil when ordering the oil burners 2 Dual fuel oil gas burners are available by request The rotary valve is turned by operating the handle whereby the division of the primary air and secondary air flows is controlled The larger the primary air flow the shorter the flame and vice versa On the gas burner center air is supplied from the center of the gas nozzle OG FHC Ilc O24
13. 7 4 JU V 2 FHC Il c O oil burner Combustion air l Burner body Built in butterfly valve Rear COVer Handle Handle rotor and pointer HB F Model HB F oil sprayer steam j DARHT Swirl vane Guide pipe Rotary valve Sight hole STANDARD SPECIFICATIONS 1kW 860kcal h Maximum firing rate dependent upon combustion air temperature KW Bumer model 700C FHC IlIc 10 1100 910 600 FHC 13 1460 1220 1 Gab 560 50 800 FHC Ilc 15 1830 1520 1310 1160 1060 1000 FHC IlIc 20 2280 1900 1630 1450 1320 1250 FHC IlIc 30 2920 2430 2090 1860 1690 1600 FHC 1IlIc 35 3650 3040 2610 2930 2120 2000 FHC IlIc 40 4570 3800 3270 2910 2650 2510 FHC 50 5480 4560 3920 3490 3170 3010 FHC 65 7310 6080 5220 4650 4230 4010 FHC c 80 9130 7600 6530 5810 5290 5010 iE 4 30C 2 TV OW HB 294kPa 294kPa HB
14. FHC ucgi amp xoxic 7 FHC Ilc LOW NOx BURNER aL mu FEATURES 1 NOx 2 NOx NOx 2 3 4 20 100 1 05 5 10 1 f NOx
15. Ks The amount of NOx generated by the burner during operation varies with various factors such as type of burner fuel excess air ratio burner load combustion air temperature furnace temperature and amount of organic nitrogen contained in the fuel The amount of NOx generated by the FHC IlIc low NOx burner can be predicted by the following equation In case of any disturbance due to air infiltration some corrections would be otherwise necessary NOx level in operation Basic NOx level X KiXK2XKsXKa XKs Fuel NOx level Where K1 Fuel coefficient K Combustion air temperature coefficient Ks Furnace temperature coefficient K4 Burner load coefficient Ks zFurnace configuration coefficient In the event that burners are arranged at short intervals or the burner chamber is narrow Ks should be taken into consideration Please contact us for Ks 2 Mixture of COG and BFG at 10MJ m3 normal 3 Sprayed with steam The figures in mean the values when sprayed with compressed air NOx Basic NOx level Ki 130 25 5 135 E EE aet T PH X 1 COG Fuel N 0 dA d ue 2COG BFG no Short jame TOMI m normal or 100 Natural gas foo oo i did E LPG m iio 1 clean COG with fuel N level NOx ppm O gt Basic NOx ppm in 1196 O correction
16. NOx burner can be predicated by the following equation Flame dimensions in operation Basic flame dimensions X F 7 F2 F1 Fuel coefficient Fz Burner load coefficient Basic flame pattern 2 i IM AB B Ir CEH EX Long lame pe ee i berm voee ed 100 00 0 095 100 00 125 25 dem Flame diameter m CEN EE LI sn 3 LET II S3 gy 47 mx Kg me cod T o LL 1 i 0 1000 2000 3000 4000 5000 6000 7000 O 10 20 30 40 50 60 70 80 90 100 Firing rate kW Burner load FHC Ic 15 G 1160kW Temperature distribution and heat flux with varied flame patterns are shown below when firing FHC Illc 15 G burner at 1160kW Typical flame temperature distribution Typical heat flux 1 1 CHE WE EE o9 L Ez T Dos BE os LO LE ese ewm RS8 nz LL 06 LE sd d Es Lengthwise distance m ER eis distance dim PILOT BURNER
17. O2 concentration in the air This action suppresses a rapid combustion reaction over the entire burning zone so that the generation of thermal NOx can be reduced to the minimal level 1 Primary combustion area 2 Secondary combustion area Section Section A Section 1 2 Primary Secondary combustion area combustion area 2 Secondary combustion zone 1 Primary combustion zone NOx NOx CHARACTERISTICS NOx FHC Ic NOx NOx NOx N0x XKiXKsxXKsxK4 XKg Fuel NOx Ki Ke Ks K4 Ks Ks
18. Oil service tank i D gauge lt W FHC c O 2 1 1 FHC llc O burner 4u TE Leung Miromano meter Oil strainer T Oil heater pua n il pum PE pump Purge piping exible tube 8 O each zone Ded gt eo Pressure L Ded T bs E Dex T DS S Compressed air steam To each zone To each burner Regulating cock Pressure reducing valve CAugai Ko lb The equipments in this catalog include patented patent pending technologies SI This catalog uses the SI units which can be calculated from the following formula OG 1kcal h 1 163X10 kW 1KW 860kcal h G 1kcal 4 18kJ 10000kcal 41 8MJ 1kJ 0 239kcal 1MJ 239kcal 1mmH O 1kg m 9 81Pa 1kg cm 98 1kPa 1Pa 0 102mmH O 1kPa 102mmH O SAFETY PRECAUTIONS Read the instruction manual carefully before using t
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20. han 20 9 because of the special property of fuel gas or if it 3 REER R 7 Adis ES ED RE SEALS C CD is difficult to mount the burner with the indicated dimensions please contact us 3 The gas connection diamater is subject to change by the firing rate OG FHC IlIc O2 7 4 JUJ Vh 2 FHC I c O oil burner A Combustion air A C Atomizing air steam C Oil burner Burner model FHC IIc 10 O FHC IIc 13 O 930kW 200A Rc36 Rc 350 1425 505 555 908 520 270 118 130 4 350 270 215 FHC IIc 15 O 1163kW 250A Rc Rct 375 450 530 580 948 540 290 118 140 380 290 225 FHC IIc 20 O 1453kW 300A Rc36 Rc 400 480 560 610 998 560 320 118 150 440 340 243 FHC IIc 30 O 1860kW 300A Rc Rc 1445 515 595 645 1023 585 320 118 160 450 350 261 FHC IIc 35 O 2326kW 350A Rct Rc 4 485 555 635 685 1085 0605 340 140 180 520 400 285 FHC IEc 40 O 2907kW 400A Rc Rc34 510 595 675 725 1145 635 370 140 190 570 440 307 FHC IIc 50 O 3488kW 400A Rct Rc34 550 635 715 765 1180 670 370 140 200 5590 460 330 FHC IIc 65 O 4651kW 400A Rct Rc34 620 705 785 835 1235 725 370 140 240 610 480 369 FHC IIc 80 O 5814kW 500A Rct Rc 4 685 770 850 900 1410 850 1420 140 270 710 580 407 CENTER AIR EFFECT
21. he equipment Jma Ew lt lt A pA URL http www chugai co jp E Meo JA 592 8331 2 43 amp Sakai Works 2 4 Chikko Shinmachi Nishi ku Sakai 592 8331 Japan TEL 072 247 1440 FAX 072 247 1441 Tel 81 72 247 1440 Fax 81 72 247 1441 om 108 0075 2 5 7 Tokyo Branch 2 5 7 Konan Minato ku Tokyo 108 0075 Japan TEL 03 5783 3378 FAX 03 5783 3368 Tel 81 3 5783 3378 Fax 81 3 5783 3368 450 0003 1 21 19 Nagoya Sales Office 1 21 19 Meieki Minami Nakamura ku Nagoya 450 0003 Japan TEL 052 561 3561 FAX 052 561 3566 Tel 81 52 561 3561 Fax 481 52 561 3566 582 0027 1000 6 Combustion Laboratory 1000 6 Enmyo cho Kashiwara Osaka 582 0027 Japan TEL 072 977 8503 FAX 072 978 6981 Tel 81 72 977 8503 Fax 81 72 978 6981 140205 M OQ The descriptions and specifications are subject to change without noti
22. le causing insufficient mixing and thus resulting in poor combustion To solve this problem the center air system has been developed This suppilies a very small amount of air at a constant pressure When a dual fuel oil gas burner is used and gas is burned the atomizing medium of the model HB sprayer as the substitute for center air is supplied at a constant pressure NOx O Effects especially at low fire 1 Driving force of fuel gas is increased 2 Fuel gas and combustion air are well mixed 3 A turn down grater than 10 1 is achieved with curling up of the flame prevented REDUCTION METHOD OF NOx LEVEL FHC IIc amp amp NOx 3 7 2 ER BRE 75 SEE FHU NOx 1 NOx Ns 2 2 Os NOx The FHC c low NOx burner employs a two stage combustion system to reduce NOx In the primary combustion area most of fuel NOx generated is reduced to Ne The secondary air entrains the combustion products on its way to the secondary combustion area to dilute the
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