PRODUCT DESCRIPTION
PPS-alloy heat exchanger is a new shell & tube type heat exchanger that utilizes PPS-alloy material tubes as a heat transfer element. It is especially suitable for extreme environments of strong corrosion and high wear in industries such as chemical, petroleum, pharmaceutical and low-temperature waste heat recovery of power plant and steel plant, seawater desalination. Its excellent heat exchange efficiency and corrosion resistance can meet the urgent needs of energy saving, emission reduction and environmental protection.
PERFORMANCE OF PPS-ALLOY TUBE
PPS-alloy tube is a polymer composite material made of polyphenylene sulfide resin and reinforced material through injection molding or extrusion process. It has the advantages of light specific gravity, strong chemical corrosion resistance, excellent electrical insulation performance, high impact resistance, simple processing and molding, high thermal conductivity and low cost. It can be used as an excellent substitute for traditional corrosion-resistant and heat transfer materials such as graphite, glass lined, stainless steel, precious metal titanium, tantalum, Hastelloy, fluoroplastics and so on. PPS is a crystalline high rigid powder polymer, generally made to PPS alloy by blending/compounding, injection molding or extrusion with multi-component resin and stuffing agent for improves the shortcomings of pure PPS resin such as high brittleness, poor toughness, low strength and easy oxidation at high temperature, and increases its physical and mechanical properties and heat resistance, reduces the product cost; The specific gravity of PPS alloy tube is 1.7 aprox., during use PPS alloy tube as a heat transfer element, the max. service temperature is 200 ºC, and the long-term reliable service te perature under pressure is 160 ºC; The bursting pressure reaches 4MPa and the long-term service pressure is 0.6MPa.
STRUCTURE
Like other tube-shell type heat exchanger, PPS-alloy heat exchanger consists of shell/body, PPS-alloy heat exchange tube bundle, lid/head, baffle, tube plate,seal & connected flange. It has simple and compact structure in lower cost.
The sealing between each PPS-alloy tube and tube plate is based upon a double-sealed o-ring system on both side. Double tube plate design makes it possible to separate the process fluid and the service fluid with a separate chamber, so that no mix will occur between the two fluids when o-ring system was damage & leakage . The chamber of shell can be pressurized at a higher pressure than single-seal system to avoid leakage of o-ring system.
PPS-alloy shell-tube type heat exchanger canbe special designed for various applications. Suitable components should be assembled depending on charactor of specific process/working medium. The shell & plate material canbe use by stailess steel, PTFE/PFA lined steel,glass lined steel, precious metal, alloy metal according to the requiements of anti-corroson & working temperature.
ADVATAGE:
High Thermal Conductivity - The thermal conductivity of PPS-alloy is 5W/(m·K) in vertical direction and 22W/(m·K) in lengthwise, lengthwise value is higher than most corrosion-resistant metals and glass lined steel, graphite material tube. When apply as heat transfer element in heat exchanger, it uses less heat exchange area under the same heat transfer efficiency, allowing smaller size and reducing space occupation.
Outstanding Corrosion Resistance - PPS alloy material has extremely high corrosion resistance, oxidation resistance and erosion resistance. It can resist the corrosion of organic solvents and 0-37% hydrochloric acid, 0-40% sulfuric acid, phosphoric acid, 5% nitric acid, 30-50% sodium hydroxide and other media. Its corrosion resistance performance can be compared with PTFE and silicon carbide materials, but the cost is much lower.
Excellent flame retardancy - PPS is a high flame retardant material in plastics, up to UL94V-0 grade.
High wear resistance and low water absorption - PPS has high wear resistance, and its modulus at 1000 rpm is only 0.04g; The water absorption of PPS is very small, generally only about 0.03%.
Low Comprehensive Cost - The comprehensive operating cost of PPS-alloy heat exchanger is lower than graphite, silicon carbide and metal matrial type.
CONTACT
SHANDONG PIONEER HEAVY INDUSTRY TECHNOLOGY CO.,LTD.
Address : Changwang Industrial Park, Liushan Town, Linqu County, Weifang City, Shandong Province, P.R.China
Mr. Conan WEI
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