Low - NOx - System technology
Regulating Gas Lances for all types of fuel gases
For individual flame formation in all glass melting furnaces
Area of application:
- As Underport or Sideport systems at regenerative fired furnaces
- As Underport or Sideport systems at recuperative fired furnaces with ceramic recuperator
- As burner systems with preheated air at recuperative fired furnaces with steel recuperator
- At other glass melting furnaces of all types
These Regulating Gas Lances belong to the practice-approved system technology for primary firing measures.
- an improved energy utilisation
- an improved melting performance
- a reduced CO2-pollution
- a reduced NOx-formation
- a reduced upper furnace loading
- a practice-adapted combustion optimisation
“They are used world wide as they are unpretentious in maintenance and wearing.”
Effects of the HWI-Regulating Gas Lances:
- One gas connection, but two gas impulses
- One gas pressure before the Regulating Gas Lance depending on the quantity, but two different gas velocities at the gas nozzle-outlet
- One gas flow rate depending on performance, but two variable gas outlet velocities per Regulating Gas Lance
increasing central impulse = shorter combustion flame
reduced central impulses = longer and smoother combustion flame
The operator can vary, without nozzle-changes, the exhaust-gas-velocity-profile and therefore the kinetic mixture energy of the gas flow to the combustion-airflow. The combustion reactions are adapted on the furnace geometry and melting capacity so that best possible energy utilisation takes place with minimal NOx-formation.
The system:
- Gas connection
- Scavenging air connection
- Hand wheel adjustment for the nozzle average modification by position change of the gas interior nozzle
- Hand wheel adjustment for regulation of gas quantity separation between the single gas nozzles
- Gas nozzle combination
Burner Lance Accessories:
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| Burner lance fixation Pos. 1.2 | Burner sealing plate Pos. 1.3 |
RGB Underport Arrangement
To guarantee the optimal exploitation of the operational function of the HWI-firing technology, there are practice-approved interfaces.
Alternative solutions need an exact clarification prior to the mutual decision-making.
As you can see at the opposite illustration, the HWI-Regulating Gas Lance-conception consists of several reason elements that are imperative for the optimisation. This approved technology secures a continuous process low in wear and nearly maintenance-free.
The Regulating Gas Lance 1.1, can be reproducible, simply and quickly installed or dismantled and fixed at the burner support 1.2.
The burner support makes possible the necessary, repro-ducible adjustment into all directions additionally to the rectifiable burner lance-adjusting angle to the combustion air.
The burner sealing plate 1.3, serves as connection between burner bloc and nozzle is adjusting pivot and sealing against wrong air inlet or exhaust gas outlet. The gas-non-return valve 1.4, prevents in the firing stops that the scavenging air blowing to keep the nozzles clean against mixture dust by the gas lance, forms a gas-air-mixture.
The flexible gas hose 1.6, allows the operationally necessary positioning of the gas lance.
Chart of performance and dimensions:
The performances listed in the following chart are common upper limits per Regulating Gas Lance and type.
On choosing the type of the Regulating Gas Lance you have to consider both the available gas admission pressure and the necessary gas quantity per burner as well. Please consider that there will be a reserve of normal performance left at maximum load.
| Type | Capacity in KW | Dimensions in mm | in " | in ° | in mm | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | B* | C | D | E | F | G | H | I | (K) | L | ||
| RGB 50 | 500 | 810 | 550 | 40 | 45 | 101 | 35 | 1 | ½ | 15 | 206 | 91 |
| RGB 200 | 1500 | 815 | 550 | 60 | 58 | 101 | 48 | 1½ | ½ | 15 | 206 | 127 |
| RGB 500 | 4000 | 835 | 565 | 70 | 70 | 121 | 60 | 2 | ½ | 15 | 206 | 130 |
| RGB 700 | 6000 | 880 | 580 | 100 | 98 | 141 | 88 | 3 | ½ | 15 | 206 | 140 |
The common gas admission pressures at the burner entry amount between 0,2 and 0,5 bar. But it depends on nozzle arrangement and regulating position of the lances.
Alternatively Standard Gas Lances
These Lances are used where the respective basic conditions of technical character or the investigation makes such a solution necessary.
The Standard Gas Lances possess no regulating unit to the individual flame adaptation in opposite to the regulating gas lances.
However, the HWI-conception allows converting this standard solution to each any later time to the aforementioned optimal solution, without having additional costs.
The standards and capacities are identical with the Regulating Gas Lances.
Sideport systems
Individual burner holding and fixation installations as well as different arrangements are disposal for RGB Sideport arrangements.
This has to be cleared before start of the project regarding the existing conditions to come to a communal appropriate solution.
Melting furnaces with ceramic recuperator
Normally, this glass melting furnace is also equipped with Underport firing.
The details for the above mentioned underport arrangement are valid “regenerative“.
Herewith, the scavenging air is normally out of use, because the burners are non-stop in use.
Recuperative furnaces with steel recu´s and other glass melting furnaces
The Regulating Gas Lances are installed centrally in the combustion air case.
The air case is designed corresponding to the air temperatures from 20° C to 800° C concerning the customers conditions .
Independently from the use capacities of the gas lances corresponding to the table values, the size of the air case has to be defined, corresponding to the expected air pre-heating. The same is applied to the fixed or variable positioning of the gas lance in the air case.
Standard Types for air cases for 500/800° C air pre-heating:
Dimensions exterior tube
| Type | A | B | C | D | E | F | G | H | J | K | L | M | N | P | S | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 545 | 465 | 285 | 280 | 250 | 200 | 194 | 14 | 10 | 10 | 100 | 170 | 210 | 4x18 | 40 | ~12 kg |
| B | 545 | 465 | 285 | 280 | 250 | 200 | 224 | 14 | 10 | 10 | 125 | 200 | 240 | 8x18 | 40 | ~13 kg |
| C | 545 | 465 | 285 | 320 | 280 | 220 | 264 | 14 | 10 | 10 | 150 | 225 | 265 | 8x18 | 50 | ~15 kg |
| D | 630 | 550 | 315 | 380 | 340 | 250 | 324 | 18 | 10 | 10 | 200 | 280 | 320 | 8x18 | 50 | ~21 kg |
| E | 630 | 550 | 315 | 430 | 390 | 275 | 374 | 18 | 10 | 10 | 200 | 280 | 320 | 8x18 | 50 | ~24 kg |
| F | 630 | 550 | 250 | 510 | 470 | 315 | 454 | 18 | 10 | 10 | 250 | 335 | 375 | 8x18 | 50 | ~30 kg |
Dimensions interior tube
| Type | Ø R | Weight |
|---|---|---|
| 1 | 125 | ~7,5 kg |
| 2 | 160 | ~9,5 kg |
| 3 | 200 | ~13,0 kg |
| 4 | 230 | ~16,0 kg |
| 5 | 260 | ~21,5 kg |
| 6 | 280 | ~21,0 kg |
Possible combinations
| Capacity in KW | Temperature | Type of exterior tube | Type of interior Tube | Fitting types of lances | ||
|---|---|---|---|---|---|---|
| DLZ / ROB | RGB / GB 50 | RGB / GB 200 | ||||
| 200-300 | 500 °C | A | 1 |  | | |
| 200-300 | 800 °C | B | 1 | | | |
| 280-420 | 500 °C | B | 1 | | | |
| 280-420 | 800 °C | C | 2 | | | |
| 400-600 | 500 °C | C | 2 | | | |
| 400-600 | 800 °C | D | 3 | | () | |
| 525-800 | 500 °C | D | 3 | | () | |
| 525-800 | 800 °C | E | 4 | | | |
| 750-1100 | 500 °C | E | 4 | | | |
| 750-1100 | 800 °C | F | 5 | | | |
| 1000-1500 | 500 °C | F | 6 | | | |
| 1000-1500 | 800 °C | F | 6 | | | |
The HWI-Engineering-Programme
Prior to an offer, it is necessary to clarify the future conditions that could have positive or negative influences.
The more precise the technical details are from the customer, the more optimal is the basis for the later effect.
Therefore, the HWI-questionnaire as well as reliable drawings of the glass melting furnace showing the installation area for the burners, is deemed very necessary.
The HWI-Port-Engineering to the burner port optimisation, assures additional advantages with the economical and ecological operation of your furnace.
You should contact us in the planning phase of a new project or prior to the repair of a furnace in time.
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Each glass melting furnace has one optimal port-design only.
The following picture shows the serious influences combine or become effective against each other at every firing optimisation.
Ensure the detailed HWI-Engineering-Cooperation with the particular Know-how through authority and worldwide experience to achieving most favourable engineering cost.
Are there still any questions concerning fuel supply or the existing MSR-technique?
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