SIGMA G Graphite Heat Exchangers

Product catalog summary

Overview: The document discusses SIGMA G, a graphite-based alternative to high nickel alloys, Tantalum, and Titanium for corrosive applications. It highlights various products such as SIGMA G-BLOC, SIGMA G-TUBE, SIGMA G-TOWER, GT-KELITE, GT-KELITE+, GT-FLON, and GT-CARB, emphasizing their use in heating, cooling, evaporation, and condensation of corrosive media.

Main Applications: These products are used in waste acid, wastewater, and gas treatment, concentration and crystallization by evaporation with acids, separation and purification of corrosive chemicals, acid dilution units, and vacuum steam jet technology. They are particularly relevant in industries like pharmaceuticals, fine chemicals, agrochemicals, steel, and petrochemicals.

Product Features: The GT-TOYO grades are noted for their high corrosion resistance, mechanical performance, and thermal transfer efficiency. The equipment design is user-friendly and suitable for harsh operating conditions, featuring SHOCK PROTECT®, STABLE LOAD®, and STRESS FREE® technologies.

Material Properties: The document details the corrosion resistance of various acids and chemicals at high concentrations and temperatures. It also describes the properties of different grades of graphite, such as SIGMA G, GT-KELITE, GT-KELITE+, GT-FLON, and GT-CARB, including their grain size, resin type, density, flexural strength, compression strength, Young's modulus, and maximum permissible temperature.

Services and Support: The company offers start-up and operating assistance, maintenance, quick support, field service, spare parts availability, and equipment replacement and optimization services.

Technical Specifications: The document provides detailed specifications for SIGMA G-BLOC, SIGMA G-TUBE, and SIGMA G-TOWER, including their modular construction, corrosion resistance, design features, and customizable parameters for specific applications.

Contact Information: The document includes contact details for API Heat Transfer locations in China, the USA, and Germany.

Catalog excerpts

SIGMA G-BLOC SIGMA G-TUBE SIGMA G-TOWER GT-KELITE GT-KELITE+ GT-FLON GT-CARB

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SIGMA G, the complement and alternative to high nickel alloys, Tantalum, Titanium for corrosive applications. Main markets • Pharmacy • Fine chemical • Agro chemical (pesticide, herbicide, fertilizer) • Steel industries (pickling and acid regeneration plant) • Petro chemical (plastics) Main applications • Heating, cooling, evaporation, condensation of corrosive medium • Waste acid, waste water and gas treatment (scrubber, falling film absorber, boiler) • Concentration, crystallization by evaporation with hydrochloric acid, sulfuric acid or phosphoric acid • Separation and purification of corrosive...

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Our grade GT-FLON is insensitive to solvents, organics which usually corrode traditional “phenolic resin” impregnated materials. Outperform in pharmaceutical batch processes, agro chemical, stainless steel pickling baths. Our Silicon carbide (SiC) offers an excellent alternative materials to metals, super-alloys for very corrosive applications (chlorine and bromine compounds) and high purity processes. Unlike metals, corrosion resistance is seldom affected by contaminants (chlorides, fluorides,...). Graphite PTFE Micrography of impregnated graphite structure ( x1000) Impregnation of graphite...

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SIGMA G-BLOC : modular stacked graphite blocks • • • • • • • • • Compactness Modular construction Fast assembly / disassembly Standardized spare parts Possibility to use corrosive media on both side with a protective coating / lining on shell side Outstanding corrosion resistance (GT-KELITE / GT-CARB / GT-FLON) SHOCK PROTECT® design of blocks against water / steam hammering STABLE LOAD® design of compression spring against stress fatigue STRESS FREE® which avoid piping stress on graphite components Standard 8 barg, 200 °C. From 0.3 m2 to 800 m2. Customized higher design parameters available on...

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