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Commercial/Industrial Boiler Products
Imported Steam Boilers
UNIVERSAL High-pressure steam boiler ZFR
The UNIVERSAL double flame tube/smoke tube boiler is available for output values from 18,000 to 55,000 kg/h with dimensions which allow transport as a ready-to-connect unit.
The UNIVERSAL double flame tube/smoke tube boiler is available for output values from 18,000 to 55,000 kg/h with dimensions which allow transport as a ready-to-connect unit. This double flame tube/smoke tube boiler was developed by company already in the 50ies and built with separate furnace gas passages for operation also with one firing system. The three-pass principle with rear furnace gas reversing chamber accommodated in the water space was patented in 1952. The economizer and superheater can be easily upgraded by the addition of modules. EC type testing according to the Pressure Vessels Directive provided for all capacities and pressure levels (CE).
The dimensions of flame tubes, smoke tube bank, water space and steam space are thermodynamically optimized. Radiant and convection heating surfaces, combined with the possibility of single flame tube operation, provide special flexibility. Rapid water circulation and smooth heat transfer ensure that the heat generated by the fuel is converted into steam quickly and without stress on the material of the boiler.
For the UNIVERSAL double flame-/smoke tube boiler, modulating output control for 'unrestricted' single- or double flame tube operation and continuous feed water control are obligatory. This type series offers with increasing steam output options for optimizing the excellent 'dynamic characteristics' and for exploiting further 'energy saving potentials':
Speed-controlled burner fan; O2-control; Electronic fuel-/air ratio control.
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The result:
Flexible output for fluctuating steam demand; Sturdy, reliable and unparalleled service life; Economical and low emissions; High pressure stability; High steam quality for demanding users; Stable under peak- and low loads; Individual burner operation/control, TÜV-approved for decades; Double control range with efficiency gain; For all burner systems, also NOx-reduced; Stable water circulation and rapid heat transfer; Easy operation and maintenance; Maximum service availability and safety; Superheated steam from superheater module, suitable for dry start; Superheater as water separator with uncontrolled superheated steam temperature; Superheater with constant controlled superheated steam temperature over a wide load range
The application profile:
Industrial establishments with a large heat requirement and distribution network in the food, beverages, textile, building materials, chemicals, ceramics and paper sectors; service establishments, municipalities, ...
The design:
The company Three-Pass patent from the year 1952 forms the basis for the outstanding and so far unsurpassed success of this series. The special design measures which neutralize the tensile forces in single flame-tube operation are decisive for long-term stability.
The flame tubes are inserted through the complete thickness of the front and rear ends and firmly welded all round their circumference. The wet-back rear furnace gas reversing chamber is separated by a water-carrying, stabilizing furnace wall and also inserted through the rear end. The large pressure relief surfaces with all-round ligaments, together with the reversing chamber ceiling-to-floor bracing, neutralize the stresses. Water circulation and heat transfer are effectively assisted by guide sections on the boiler floor and are further accelerated by flow passages between the flame tubes and the side-by-side smoke tube sections.
Superheated steam is generated with superheater modules which are attached to the front reversing chamber. Using bypass dampers, the superheated steam temperature can be kept constant over a wide load range. An economizer is simply placed on top of the flue gas collecting chamber and does not require an additional foundation. The swiveling reversing chamber doors keep the smoke tube sections freely and easily accessible. The high-quality mineral wool mat insulation of the entire boiler body and the superheater module ensure that radiation heat losses are insignificant. The sturdy base frame reduces the specific ground pressure.
The single flame tube operation permitted by the TÜV (German technical inspection association) allows unrestricted fully automatic operation with one or both burners.
The control range is doubled and each low-load phase is run with one burner with a gain in efficiency. With dual burners, a fuel changeover without boiler shut-down and parallel operation with different fuels are possible.
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UNIVERSAL High pressure steam boiler Type | Dimensions | Flue gas connection | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
L1 ② [mm] |
L2 ①⑤ [mm] |
L3 [mm] |
L4 [mm] |
B1 [mm] |
B2 ① [mm] |
H1 ③ [mm] |
H2 ① [mm] |
L11 [mm] |
B4 [mm] |
H3 [mm] |
|
ZFR 20000 | 8999 | 7160 | 5575 | 1075 | 3817 | 3700 | 4819 | 4057 | 678 | 1500 | 2870 |
ZFR 23000 | 9389 | 7550 | 5825 | 1215 | 4017 | 3900 | 5023 | 4246 | 678 | 1500 | 3059 |
ZFR 28000 | 10598 | 8570 | 6655 | 1355 | 4117 | 4000 | 5232 | 4350 | 748 | 1500 | 3163 |
ZFR 30000 | 10598 | 8670 | 6655 | 1355 | 4317 | 4200 | 5607 | 4522 | 748 | 1800 | 3350 |
ZFR 35000 | 10409 | 9090 | 7075 | 1355 | 4517 | 4400 | 5792 | 4712 | 748 | 1900 | 3540 |
ZFR 40000 | 10598 | 9340 | 7325 | 1355 | 4617 | 4400 | 5609 | 4712 | 748 | 1900 | 3540 |
ZFR 50000 | 10604 | 9780 | 7575 | 1495 | 4817 | 4700 | 6407 | 5085 | 818 | 1900 | 3853 |
ZFR 55000 | 11139 | 10530 | 8325 | 1495 | 4817 | 4700 | 6187 | 5085 | 818 | 1900 | 3853 |
① Smallest transport dimensions with 100 mm insulation thickness if fittings, pump bracket and burner are removed(without cable ducting; with cable ducting +75 mm on right). ② Dimension L1 is an standard gauge and depends on the make, type and rated capacity of burner. ③ The dimension H1 may vary depending on the valve manufacturer. ⑤ In case of superheater boiler ZFR-X, dimension L2 increases. |
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Due to the technical improvements, we reserve the right to change and modify the relevant parameters |
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UNIVERSAL High pressure steam boiler Type | Base frame | |||||||
---|---|---|---|---|---|---|---|---|
L5 [mm] |
L6 [mm] |
L7 [mm] |
L8 [mm] |
L9 [mm] |
L10 [mm] |
B3 [mm] |
Universal columne IPB - HEB - DIN 1025 [mm] |
|
ZFR 20000 | 4325 | 3725 | 925 | 625 | 300 | 225 | 2470 | 260 |
ZFR 23000 | 4575 | 3975 | 925 | 625 | 300 | 225 | 2600 | 280 |
ZFR 28000 | 5225 | 4625 | 925 | 625 | 300 | 225 | 2700 | 300 |
ZFR 30000 | 5375 | 4775 | 850 | 550 | 300 | 225 | 2800 | 300 |
ZFR 35000 | 5500 | 4900 | 950 | 650 | 300 | 225 | 2900 | 300 |
ZFR 40000 | 5500 | 4900 | 1120 | 820 | 300 | 225 | 2900 | 300 |
ZFR 50000 | 5500 | 4900 | 1325 | 1025 | 300 | 425 | 3100 | 300 |
ZFR 55000 | 6250 | 5650 | 1325 | 1025 | 300 | 425 | 3100 | 300 |
Due to the technical improvements, we reserve the right to change and modify the relevant parameters |