Compact Heat Exchanger Lugat-SystemEnergy Savings by Heat Recovery

H EAT TRAN S FE R

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Regenerative Heat Exchangers

Very significant energy savings can be achieved in steam boilers and industrial furnaces with the use of Regenerative Heat Exchangers for the recovery of flue gas heat normally discharged into the atmosphere to preheat combustion air.

The Lugat Heat Exchangers compact design has been used for this purpose for many years and the rugged construction has proven to be very satisfactory for all fuels and operating conditions. Carefully designed heat transfer plates are arranged in sectors of the slowly rotating rotor. During rotor rotation the flue gas heat is alternately stored by the heating plates and transferred to the incoming air. This operating principle provides high heat transfer efficiencies within a very confined space.

The Heating Surface

The heating surface consists of metal plates of 0.51.0 mm thickness which by virtue of their special shape achieve a high heat transfer in line with the lowest possible resistance. On the cold end the plates are arranged in boxes 300 mm in height which can be easily replaced. In corrosive environments the heating plates can be made of a special material or can be provided with durable enamelling.

Rotor Bearing Arrangement

The rotor is seated in two self-aligning roller bearings. The bearing housings are cooled by water to allow a dissipation of the incoming heat from shaft and bearing area.

Drive

The rotor is normally driven by a geared motor via a pin rack, but it is also possible to apply any other type of drive unit, for example, steam or compressed air turbine.

Seals

The seals prevent the transfer of combustion air into the flue gas. The sealing plates are flexible to permit an adaptation to the rotor distortion under changing temperature conditions at different loads.

Auxiliary Equipment

Depending on the operating conditions involved, the heat exchangers can be quipped with auxiliary devices, such as a blowing device, a fire alarm system, an extinguishing device, a washing device and rotation control.

Optimal fuel utilization has become an urgent challenge due to the continuous rise in energy prices and the current requirements on CO2 minimization.

We recommend increasing the efficiency of steam boilers and industrial furnaces through lower flue gas temperatures, thus improving operating economy. This can be done both on new and older plants that have been in operation for many years.

PRoviDing SoLuTionS foR inDuSTRiAL PLAnTS

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Compact Design

1 Casing2 Rotor with Heating Elements3 Seals4 Bearings5 Drive6 Water Washing Device7 Soot Blower

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2

6

5

4

3

5

7

4

Soot Blowing

AvAiLABLE ARRAngEmEnTS

HoRizonTAL TyPE

Washing Device

Fire Extinguishing

Cooling Water

Rotation Control

Replaceable Cold End Heating Elements

Hot End Heating Elements

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Lugat regenerative heat exchangers can be manufactured in both vertical or horizontal designs. The horizontal design also permits an arrangement of the ducts side-by-side or one above the other.

vERTiCAL TyPE

Fire Extinguishing Cooling WaterGuide Bearing

Soot Blowing

Hot End Heating Elements

Replaceable Cold End Heating Elements

Support BearingRotation Control

Washing Device

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Type* A B C D E F G H J K

CH 2.0 x + 1420 3360 2600 1300 x + 1200 2000 2040 570 900 80CH 2.2 x + 1420 3560 2800 1400 x + 1200 2200 2240 670 900 80CH 2.4 x + 1420 3760 3000 1500 x + 1200 2400 2440 770 900 80

CH 2.6 x + 1420 3960 3200 1600 x + 1200 2600 2640 870 900 80

CH 2.8 x + 1420 4160 3400 1700 x + 1200 2800 2840 970 900 80

CH 3.0 x + 1420 4360 3600 1800 x + 1200 3000 3040 1070 900 80

CH 3.2 x + 1420 4560 3800 1900 x + 1200 3200 3240 1170 900 80

CH 3.4 x + 1420 4760 4000 2000 x + 1200 3400 3440 1270 900 80

CH 3.6 x + 1420 4960 4200 2100 x + 1200 3600 3640 1370 900 80

CH 3.8 x + 1420 5160 4400 2200 x + 1200 3800 3840 1470 900 80

CH 4.0 x + 1620 5360 4600 2300 x + 1360 4000 4000 1450 1100 100

CH 4.2 x + 1620 5560 4800 2400 x + 1360 4200 4200 1550 1100 100

CH 4.4 x + 1620 5760 5000 2500 x + 1360 4400 4400 1650 1100 100

CH 4.6 x + 1620 5960 5200 2600 x + 1360 4600 4600 1750 1100 100

CH 4.8 x + 1620 6280 5400 2700 x + 1360 4800 4800 1850 1100 100

CH 5.0 x + 1870 6480 5700 2900 x + 1570 4900 5000 1850 1300 100

CH 5.2 x + 1870 6680 5900 3000 x + 1570 5100 5200 1950 1300 100

CH 5.4 x + 1870 6880 6100 3100 x + 1570 5300 5400 2050 1300 100

CH 5.6 x + 1870 7080 6300 3200 x + 1570 5500 5600 2150 1300 100

CH 5.8 x + 1870 7280 6500 3300 x + 1570 5700 5800 2250 1300 100

CH 6.0 x + 1990 7480 6700 3400 x + 1690 5900 6000 2300 1400 100

CH 6.2 x + 1990 7680 6900 3500 x + 1690 6100 6200 2400 1400 100

CH 6.4 x + 1990 7880 7100 3600 x + 1690 6300 6400 2500 1400 100

* Type designation indicates rotor diameter (m)x = Hot End Element Height (mm)

ovERALL DimEnSionS HoRizonTAL SHAfT

(All dimensions in mm except where indicated)Dimensions for information only, not binding for construction.

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Type* A B C D E F G H J K

CH 2.0 x + 1545 3360 2500 1300 2800 900 2040 570 900 80

CH 2.2 x + 1545 3560 2700 1400 3000 900 2240 670 900 80

CH 2.4 x + 1545 3760 2900 1500 3200 900 2440 770 900 80

CH 2.6 x + 1545 3960 3100 1600 3400 900 2640 870 900 80

CH 2.8 x + 1545 4160 3300 1700 3600 900 2840 970 900 80

CH 3.0 x + 1745 4360 3500 1800 3800 900 3040 1070 900 80

CH 3.2 x + 1745 4560 3700 1900 4000 900 3240 1170 900 80

CH 3.4 x + 1745 4760 3900 2000 4200 900 3440 1270 900 80

CH 3.6 x + 1745 4960 4100 2100 4400 900 3640 1370 900 80

CH 3.8 x + 1745 5160 4300 2200 4600 900 3840 1470 900 80

CH 4.0 x + 2095 5360 4550 2350 4800 1100 4000 1450 1100 100

CH 4.2 x + 2095 5560 4750 2450 5000 1100 4200 1550 1100 100

CH 4.4 x + 2095 5880 4950 2550 5200 1100 4400 1650 1100 100

CH 4.6 x + 2095 6080 5150 2650 5400 1100 4600 1750 1100 100

CH 4.8 x + 2095 6280 5350 2750 5600 1100 4800 1850 1100 100

CH 5.0 x + 2355 6480 5550 2850 6000 1300 5000 1850 1300 100

CH 5.2 x + 2355 6680 5750 2950 6200 1300 5200 1950 1300 100

CH 5.4 x + 2355 6880 5950 3050 6400 1300 5400 2050 1300 100

CH 5.6 x + 2355 7080 6150 3150 6600 1300 5600 2150 1300 100

CH 5.8 x + 2355 7280 6350 3250 6800 1300 5800 2250 1300 100

CH 6.0 x + 2355 7480 6600 3350 7000 1500 6000 2300 1400 100

CH 6.2 x + 2355 7680 6800 3450 7200 1500 6200 2400 1400 100

CH 6.4 x + 2355 7880 7000 3550 7400 1500 6400 2500 1400 100

* Type designation indicates rotor diameter (m)x = Hot End Element Height (mm)

ovERALL DimEnSionS vERTiCAL SHAfT

(All dimensions in mm except where indicated)Dimensions for information only, not binding for construction.

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Workshop Manufacturing

fRom mAnufACTuRE To inSTALLATion AT SiTE

Lugat Heat Exchanger CV 2.8/1.05 + 0.3

The CV 2.8 type designation corresponds to the inner rotor diameter. 29 standard sizes with diameters of 1.06.4 m are available for application in boiler plants with capacities of 3 to 350 t/h steam.

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Installation at Site

Mounting a 4.6 meter vertical shaft Lugat heat exchanger in a steel mill in northern France.

Transport and Erection

Lugat heat exchangers with diameters up to 5.6 m can be shipped completely assembled. Therefore the only requirement is to connect the ducts and the auxiliary equipment at the jobsite.

Shipment to New Zealand.Weight of the Lugat heat exchanger 110 tons.

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Vertical Shaft Lugat Heat Exchanger

Vertical Shaft Plan View

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SPX Heat Transfers reputation for engineering and fabricating the highest quality heat transfer products and systems continually results in repeat sales. Every quality check during the fabrication of your heat transfer equipment is performed on the most up-to-date equipment available by QC technicians who are highly skilled at their craft.

Every quality check will always be performed on the required equipment either by in-house technicians or independent contractors. Our customers have the assurance that the technicians who perform the quality checks on their heat transfer equipment will be the best available and use only state-of-the-art equipment and procedures.

Our quality process has met the exacting standards required for ISO-9001 Certification. Now, in addition to SPX Heat Transfers customers knowing that our products meet their highest expectations, they are assured that SPX Heat Transfers quality process has been certified to the most exacting international standards.

SPX HEAT TRAnSfER

S PX H EAT TRAn S fE R LLC

2121 NORTH 161 EAST AVENUE

TULSA, OKLAHOMA 74116 USA

P: 918 234 6000

F: 918 234 3345

info@spxht.com

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In the interest of technological progress, all products are subject to design and/or material change without notice

ISSUED 01/2013 LUGAT-13

COPYRIGHT 2013 SPX Heat Transfer LLC