FLOWSIC® Silicon Carbide- Shell and Tube Heat Exchanger DN 100 – DN 300 (DIN PN 10) 4” - 12" (ANSI 150)

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fluoroplastic engineering service

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FLOWSIC® Silicon Carbide Shell and Tube Heat Exchanger General Information

Heat Exchange by Silicon Carbide DN 100 - DN 300 (4“ -12“)

FLOWSIC® The new Silicon Carbide Shell and Tube Heat Exchanger designed with triple steel plate connectors (patent pending) repre-sents an outstanding technology standard for major principles of heat exchange such as condensation and evaporation This recent technical achievement is the result of:

• Profound knowledge of corrosion resistant materials

• Long term experience in the engineering of heat exchangers, concentrating mainly on chemically resistant materials i. e. Graphite, Glassware, Titanium, Tantalum, besides Enamel lining, plastic coating and alloys.

• Know-how in coating technologies particularly „Transfer-Moulding“ of PFA, PP, PVDF

• Appropriate logistics and qualified staff besides state-of art EDP-support

• Solid production capacity based upon progressive manufacturing equipment

• Compliance with international standards and regulations(DIN, ISO, ANSI) with particular respect to the Euro-pean Pressure Equipment Directive (PED 97/23/EC)

• Certified Quality Assurance System (EN ISO 9001)

• Co-operation with Research- and Standard-Institutes

Silicon Carbide (SiC) as perfect heat exchanging material

Silicon Carbide originating from Carborundum (Saint-Gobain Performance Ceramics) is distributed under the trademark Hex-oloy® SA. This basic raw material with a particle size of 8 micron is transformed into a single-phase fine-grain alpha product without any content of free silicon. This material reveals an excellent chemical inertness up to temperatures of 205 °C (400 °F). Hexoloy® SA Tubes have been tested against hydrofluoric acid, bromine, concentrated nitric acid, various mixtures of acids and caustics, oxidizers and chlo-rinated hydrocarbons.

Corrosion Resistance of Silicon Carbide

Corrosive Media Temperature °C Rate of Corrosion

(mg/cm2 p.a.) H2SO4 98 % 100 1,8 H3PO4 85 % 100 < 0,2 HF 53 % 25 < 0,2 NaOH 50 % 100 2,5 KOH 45 % 100 < 0,2 HNO3 70 % 100 < 0,2 HCl 37 % 86 < 0,2 HF10 %+ HNO3 57 % 25 < 0,2

Please note FLOWSIC® SiC-Tube Heat-Exchangers are conscientiously assembled with SiC-Tubes total-ly devoid of free Silicon. This decisive measure efficiently eliminates probable side reactions. As security and reliability precaution the concise SiC-Tubes undergo pressure tests at 186 bar (2,700 PSI) prior to use

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f.e.s.

fluoroplastic engineering service

f.e.s. GmbH & Co. KG • Senefelderstrasse 1/T5 • D - 63110 Rodgau • Telephone +49 6106 88 61 97 • E-Mail: f.e.s.-@t-online.de

FLOWSIC® Silicon Carbide Shell and Tube Heat exchanger DIN and ANSI

System and Construction DN 100 - DN 300 (4“ - 12“)

Construction FLOWSIC® Silicon Carbide Shell and Tube Heat Ex-changers are designed for various types of applications. Depending on chemical exposure specifically suitable components will be assembled. Silicon Carbide heat exchanging tubes in dimensions of Ø 14,0 x 1,5 mm are being assembled in standardised lengths of 1,000, 2,000, 3,000 or 4,000 mm, made up into bundles and housed in shell dimensions between DN 100 (4”) and 300 (12”) respectively. The sealing of the SiC-Tubes is based upon a double-sealed O-Ring System on both sides individually for each tube.

Triple-Plate-Assembly*) The make-up in connection with the recently engineered triple-plate-system ensures excellent reliability over largely extended periods of operation. The triple-plate-system is subdivided into:

➢ Primary plate fort he passage of the SiC-Tubes ➢ Secondary plate for the uptake of sealing sys-

tems(O-Rings, Distance Rings, Pushers) ➢ Tertiary plate for simultaneous attachment to the

secondary plate. *) Patent released

Main features of the triple-plate-system::

➢ The Stainless Steel primary plate (AISI 304 L)

bears a 3.5 mm PFA-Coating and represents an effective barrier against corrosion and permeation

➢ Threaded holes on both sides of the main tube

plate maintain an independent assembly for shell and bonnets. This precludes the necessity of supplementary closing sections between main plate and shell.

➢ The sealing system, consisting of 2 O-Rings,

spacer and push sleeve is pressed against the secondary plate. Its geometrical correctness is granted by the tertiary plate.

➢ Stainless Steel tie rods (AISI 316 L) take charge

for adequate attachment of secondary and basic plate by help of the regulating tertiary plate. The tie rods are equipped with O-Ring-sealed caps as supplementary measure against leakage.

➢ As additional security measure safety rings can

be installed between main plates and bonnets in order to allow:

o Monitoring tightness of process- and/or ser-

vice side o Applied excess pressure with inert gases (e.

g. nitrogen) as overlying buffer for process and/or service side

The triple-plate design ensures:

o Dependable and secure execution o Reliable sealing between Silicon Carbide tubes

and Triple-Plate-System o Increased mechanical rigidity compared with pure

PTFE- or PTFE/Glass-Plates o Efficient security for severe operating conditions.

PFA-lined plates will fully absorb mechanical in-fluences even at elevated temperatures

o Utmost reliability by circumventing lined threads made of PTFE or PTFE/Glass

o Easy maintenance. No special equipment need-ed for on-site maintenance After the removal of the bonnets the triple-plate-system remains at-tached to the shell..

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f.e.s.

fluoroplastic engineering service

f.e.s. GmbH & Co. KG • Senefelderstrasse 1/T5 • D - 63110 Rodgau • Telephone +49 6106 88 61 97 • E-Mail: f.e.s.-@t-online.de

FLOWSIC® Silicon Carbide Shell and Tube Heat Exchanger DIN and ANSI

Silicon Carbide - Properties DN 100 - DN 300 (4“ - 12“)

Excellent Thermal Conductivity The thermal conductivity of silicon carbide comes close to graphite. This turns out substantially superior to further anticorrosive materials, such as PTFE, glass, alloys and noble metals This implies better efficiency and thus reduced heat exchange area and diminished space demand.

Solid Mechanical Strength The extraordinary hardness of Silicon Carbide (50 % higher than Tungsten Carbide) maintains an excellent resistance against erosion. The process benefits of an improved heat exchange factor and allows higher fluid velocity.

Product Purity and Permeation Hexoloy® SA consists solely of pure silicon carbide without any additives such as binders or fillers. Its extraordinary inertness against liquid and gaseous media even at elevated temperatures and pressure loads marks silicon carbide as versatile. Hexoloy® SA meets the compliance of: FDA Food & Drug Administration (USA) DVGW German Society of Gas and Water WRC Water Bylaws Scheme (U.K.)

Physical Properties

Characteristics Unit Data Specific Gravity g/cm3 3.10 Grain Size Micron 4 - 6 Knoop-Hardness kg/mm2 2800 Flexural Strength (4 points at 20 °C) MPa 380 Compression Strength MPa 3900 Elasticity Modulus GPa 410 Weibull Modulus (2 parameters) GPa 8 Maximum Operating Temperature (air) °C 1650 Mean Specific Heat (20 °C) kJ/kg·K 0,67 Thermal Conductivity W/m·K 105 - 125 Permeability (20 °C – 1,000 °C) Proof against all gas types up to 31 MPa Volume Resistivity Ω·cm 102 – 106

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f.e.s.

fluoroplastic engineering service

f.e.s. GmbH & Co. KG • Senefelderstrasse 1/T5 • D - 63110 Rodgau • Telephone +49 6106 88 61 97 • E-Mail: f.e.s.-@t-online.de

FLOWSIC®2) Silicon Carbide Shell and Tube Heat Exchanger DIN and ANSI

Application Criteria DN 100 - DN 300 (4“ - 12“) Chemical Resistance

Versatility

The entire wetted area is fitted with chemically resistant material, thus enabling a widely unlimited range of applica-tion.

Depending on process requirements corrosive media may circulate inside the SiC-Tubes and/or in the shell area.

Recommended Materials

Component Corrosive Media

in Shell Area Corrosive Media

inside the Silicone Carbide Tubes Shell Carbon Steel Enamel lined or Steel/PTFE Stainless Steel 1.4301 or 1.4404 SiC-Tubes SiC Hexoloy® 3) Ø 14 x 1,5 mm Main Tube Plate Stainless Steel 1.4301 with PFA-Coating O-Ring-Seals around SiC-Tubes Kalrez® 4) and Viton®,5) or Viton®/PFA and Viton® Secondary Plate Stainless Steel 1.4404 PTFE/Glass, Diabon® 1)NS2, Alloys Tertiary Plate (Push Plate)) Stainless Steel 1.4404 PTFE/Glass, Diabon® 1)NS2, Alloys Screw Plugs for Tertiary Plate Stainless Steel 1.4404 C-Stahl/PFA or Alloys O-Ring-Seals for Shields Viton® Kalrez®, Viton®/PFA or Viton® Bonnets Stainless Steel 1.4404 Carbon Steel/PFA oder Sondermaterial

Positioning of Assembly Horizontal and vertical installations, besides inclined positions can be taken into account depending on space availability.

Principles of Heat Transfer FLOWSIC® Silicon Carbide Shell and Tube Heat Exchangers are designed to accomplish technologies such as:

Principle Type of Transfer Condensation liquid/liquid Heat Exchange Evaporation liquid/gaseous Heat Exchange Film-Evaporation gaseous/gaseous Heat Exchange

Change of Assembly and Maintenance During maintenance measures components may be easily changed or substituted depending on demand. After re-moval of the bonnets only the secondary and tertiary plates must be released in order to investigate the silicon carbide tubes and the adjacent sealing systems. In the event of local replacement of silicon tubes, however, sufficient replacing area must be maintained.

Selection of Materials A suitable selection of materials shall be considered in depence with the process conditions. The shell i.e. can be made alternatively of PTFE-lined Carbon Steel, Steel with Enamel-lining, various Stainless Steels or special alloys. Corrosive media may circulate both inside the silicon car-bide tubes and/our in the outer shell area. For special applications you are kindly requested to consult our engineering department.

1) Diabon® is registered trademark of SGL Carbon 2) FLOWSIC® is registered trademark of Italprotec sas 3) Hexoloy® is registered trademark of Carborundum (Saint-Gobain Performance Ceramics) 4) Kalrez® und 5) Viton® are registered trademarks of DuPont Dow Elastomers

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f.e.s.

fluoroplastic engineering service

f.e.s. GmbH & Co. KG • Senefelderstrasse 1/T5 • D - 63110 Rodgau • Telephone +49 6106 88 61 97 • E-Mail: f.e.s.-@t-online.de

FLOWSIC® Silicon Carbide Shell and Tube Heat Exchanger DIN and ANSI

Components DN 100 - DN 300 (4“ - 12“)

Pos. Component Material 1 Shell Carbon Steel glass-lined, CS/PTFE, C-Stahl/C-PTFE, AISI 316 L 2 Split Shell Flange Carbon Steel Zinc plated 3 Shell Gasket PTFE-Envelop O-Rings, Wavy Sheet Steel, Ceramics 4 Basic Plates AISI 304 L PFA-coated 5 Secondary Plates (Containing Plates) AISI 316 L, PTFE/Glass, Diabon® NS2, Alloys 6 O-Rings for SiC-Tube Kalrez®, Viton®/PFA, Viton® 7 O-Rings for Secondary Plate Viton®, Viton®/PFA, Kalrez® 8 Tertiary Plate(Push Plate) AISI 316 L, PTFE/Glass, Diabon® NS2, Alloys 9 Special Tie Rods AISI 316 L

10 Screw Plug for Tie Rods AISI 316 L, Carbon Steel/PFA, Alloys 11 O-Rings for Screw Plugs Viton®, Viton®/PFA, Kalrez® 12 Silicon Carbide Tubes Hexoloy® SA SiC (Silicon Carbide) 13 Separator Baffles PTFE 14 Spacers Borosilicate, PTFE/Glass, PTFE, Stainless Steel 15 Extension Joints PTFE (for spacers in case of Borosilicate) 16 Inserts for Bonnet Screws PTFE, AISI 316 L or AISI 304 L 17 Bonnets AISI 316 L, C-Steel/PFA, Alloys 18 Gasket for Bonnets PTFE-Envelop Gasket 19 External Bolts Nuts and Rings AISI 304 L 20 Belleville Springs Spring Steel 21 Sealing-O-Ring for Push Plates *) Viton®, Kalrez® *) – (with safety ring only) 22 Sealing Ring for Tie Rods Viton®, Kalrez® *) – (with safety ring only) 23 Identification Plate AISI 1.4301

Connecting Dimensions (Standard) for Horizontal Heat Exchangers

Shell DN DN1 DN2 DN3 DN4

100 50 40 25 25 150 80 50 40 40 200 100 80 50 50 250 150 100 80 80 300 200 100 80 80

Special dimensions-/configurations upon request

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f.e.s.

fluoroplastic engineering service

f.e.s. GmbH & Co. KG • Senefelderstrasse 1/T5 • D - 63110 Rodgau • Telephone +49 6106 88 61 97 • E-Mail: f.e.s.-@t-online.de

FLOWSIC® Silicon Carbide Shell and Tube Heat Exchangers DIN and ANSI

Sizes and Dimensions DN 100 - DN 300 (4“ - 12“)

Shell Size Tube Length (mm) 1000 1500 2000 2500 3000 3500 4000

DN 100

4“

Number of SiC-Tubes 8 8 8 8 8 8 8

Shell Length (mm) 890 1390 1890 2390 2890 3390 3890

Heat Exchange Area (m2) 0,32 0,49 0,67 0,84 1,02 1,20 1,37

Entrance/Exit Wheelbase (mm)

590 1090 1590 2090 2590 3090 3590

DN 150

6“

Number of SiC-Tubes 22 22 22 22 22 22 22

Shell Length (mm) 882 1382 1882 2382 2882 3382 3882

Heat Exchange Area (m2) 0,87 1,35 1,84 2,32 2,77 3,25 3,74

Entrance/Exit Wheelbase (mm)

532 1032 1532 2032 2532 3032 3532

DN 200

8“

Number of SiC-Tubes 42 42 42 42 42 42 42

Shell Length (mm) 882 1382 1882 2382 2882 3382 3882

Heat Exchange Area (m2) 1,66 2,58 3,51 4,43 5,35 6,28 7,20

Entrance/Exit Wheelbase (mm)

482 982 1482 1982 2482 2982 3482

DN 250

10“

Number of SiC-Tubes 80 80 80 80 80 80 80

Shell Length (mm) 870 1370 1870 2370 2870 3370 3870

Heat Exchange Area (m2) 3,13 4,89 6,65 8,41 10,16 11,92 13,68

Entrance/Exit Wheelbase (mm)

472 972 1472 1972 2472 2972 3472

DN 300

12“

Number of SiC-Tubes 114 114 114 114 114 114 114

Shell Length (mm) 870 1370 1870 2370 2870 3370 3870

Heat Exchange Area (m2) 4,46 6,97 9,47 11,98 14,48 16,99 19,50

Entrance/Exit Wheelbase (mm)

472 972 1472 1972 2472 2972 3472

Technical Data Heat Exchange Area: 0,32 – 19,50 m2 Shell Dimension: DN 100 – DN 300 (4” – 12”) Flanges: PN 10 or ANSI 150 lbs Length of SiC-Tubes: 1.000 mm – 4.000 mm

Operating Conditions Temperature: -20 °C to +180 °C Pressure: -1 bar to +6 bar Deviating conditions upon request

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