JHOB

FEATURES

+ Choice of a low velocity or medium velocity burner
+ Long lifetime with Refractory (castable) on working temp up to1,500℃
+ Available for Preheated Air operation up to 450℃
+ For Kerosine, Diesel 0il , B-C Oil and Refined Oil
+ Suitable for all kind of oil LHV over 4,000Kcal / Kg
+ Fuel Capacity based on 400,000 ~ 5,300,000Kcal/hr oil and 20% excess air
+ Available automatic gas Pilot burner or manual ignition

APPLICATIONS

+ Heat treatment
+ Heating up
+ Al-melting
+ Glass melter
+ Rotary calciner
+ Steel reheat furnace
+ Rotary dryer

JHOB Series Dimensions

MODEL	A	B	C	D	E	F	G	H	J	K	L	M	K'	N	O	P	Q	R
JHOB-100	55A	150A	320	300	750	890	406	250	300	150	32A	8	18	25A	510	560	15A	15A
JHOB-200	80A	200A	320	300	750	890	406	250	300	150	32A	8	18	25A	510	560	15A	15A
JHOB-300	80A	250A	350	325	815	955	457	350	320	150	32A	8	18	25A	540	600	20A	15A
JHOB-400	80A	300A	400	350	890	1030	508	400	350	150	32A	12	18	25A	590	660	20A	15A
JHOB-500	80A	350A	450	375	950	1080	559	450	390	150	32A	12	18	25A	660	710	25A	20A

JHOB Series Dimensions

MODEL	A'	B'	C'	F'	O'	M'	E'	K'
JHOB-100	220	470	710	660	510	8	18	M14 X 35L
JHOB-200	220	470	710	660	510	8	18	M14 X 35L
JHOB-300	250	570	760	710	540	8	18	M14 X 40L
JHOB-400	290	620	810	760	590	12	22	M14 X 40L
JHOB-500	350	670	860	810	660	12	22	M14 X 40L

JOB

OPERATION

Combustion air and fuel are channeled into the nozzle separately, permitting wide turndown while reducing the possibility of “flashback”. Normally. All combustion air is supplied through the burner.
When operating the oil atomizing air (primary air) must be used along with the secondary air. The JOB burners couple a uniform flame front with flame stability and retention over the entire operating range.
JOB burners are available for preheated air operation up to 350℃ or for high temperature furnace application. Atomizing air is maintained at ambient conditions during preheated air operation.
JOB burner can be controlled manually or automatically. Automatic control normally employs a Ratio Regulator for each control zone to maintain air-fuel ratio. An alternate system uses control valves in each of the fuel and air lines, linking the valves to a single motor controller.

CONSTRUCTION

With no moving parts, the burner is virtually maintenance free. Parts subject to heat are either of heat resisting cast iron (chrome iron) or stainless steel. The tile is manufactured, dried and cured by JSE. Special refractory materials and jacketed tiles can be supplied upon request.

MOUNTING

The burner mounting plate, and refractory tile are shipped as an assembled unit.
If the pilot and secondary air are to be in line, a 45˚ No.1 spark ignited gas pilot,
Model No.JPG050 must be used.
(Alternately, if a 9 o’clock secondary air position is required and it is desired to use the standard No.1 pilot, the mounting plate may be rotated so as to position the pilot at either the 12 o’clock or 3 o’clock position.)
Each JOB is equipped with companion flanges on the main air connections to permit easy burner installation and removal and allow the mounting of and orifice plate for reduced air flows, if required.

PILOT

The burner mounting plate includes a port for direct spark or gas pilot ignition system. Direct spark ignition is available for gas operation only. The pilot is required for initial burner ignition only and is not required to maintain ignition.

FLAME SUPERVISION

The JOB mounting plate is provided with a port for monitoring the pilot and main flame, using a UV scanner or other suitable device.

JOB-040

JOB-070

JOB NOZZLE MIX BURNERS COMBINATION FUEL FIRED (TABLE 1.)

AIR PRESSURE (16 oz)
JOB BUR NO.	PRI AIR CFM @ 16 oz.	SEC AIR CFM	3CAP IN 1000 (Kcal/Hr)0	OIL CAP GPH
JOB-040	28.3	263	365	10.6
JOB-070	57	544	751	21.8

※ NOTES FOR TABLES 1
1. Fuel Capacity based on 138,000 BTU/gal oil and 20% excess air.
2. Air pressure is “total pressure” measured 6 pipe diameters from burner.
3. Oil Pressure should be at least 5-10 psig at the burner.
4. Capacities for preheated air operation will differ from those shown.

OIL-MAXIMUM % EXCESS AIR (TABLE 2.)

JOB BURNER NO.)	AIR PRESSURE
	4 oz	8oz	16 oz
JOB-040	100	170	350
JOB-070	100	250	400