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Shandong Jiuze Heat Exchange System Co., Ltd
Silicon carbide heat exchanger
NegotiableUpdate on 05/14
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Overview
Silicon carbide heat exchanger is a new type of heat exchanger that uses silicon carbide ceramic material as a heat transfer medium. Due to its physical and chemical properties, silicon carbide heat exchangers have been widely used in various industrial fields, demonstrating excellent performance and broad application prospects.
Product Details
Silicon carbide heat exchanger is a new type of heat exchange equipment made of silicon carbide ceramic material, which has the advantages of high temperature resistance, corrosion resistance, wear resistance, acid and alkali resistance. It has high heat transfer efficiency and long service life, and can be widely used in fields such as petrochemicals, electricity, metallurgy, and environmental protection. Its compact structure, small size, light weight, easy installation, and simple maintenance make it an ideal heat exchange device.
Silicon carbide heat exchangers are typically composed of silicon carbide tube bundles, through which internal fluids transfer heat. Its structure can be divided into two forms: straight through and shell program. In a straight through heat exchanger, the fluid flows directly through the silicon carbide tube bundle; In a shell heat exchanger, fluid passes through the shell side and transfers heat between the silicon carbide tube bundle and the shell side.
The Jiuze silicon carbide heat exchanger adopts pressureless sintered silicon carbide tubes. The silicon carbide tube uses submicron silicon carbide powder and is fully sintered in a pressureless state. The silicon carbide tube obtained under such harsh process conditions has the characteristics of self bonding and fine particles (particles smaller than 10 microns), manifested as high hardness, light weight, and no pores. Therefore, this type of silicon carbide is highly resistant to corrosion, wear, high temperature, and thermal shock.
Silicon carbide heat exchangers are typically composed of silicon carbide tube bundles, through which internal fluids transfer heat. Its structure can be divided into two forms: straight through and shell program. In a straight through heat exchanger, the fluid flows directly through the silicon carbide tube bundle; In a shell heat exchanger, fluid passes through the shell side and transfers heat between the silicon carbide tube bundle and the shell side.
The Jiuze silicon carbide heat exchanger adopts pressureless sintered silicon carbide tubes. The silicon carbide tube uses submicron silicon carbide powder and is fully sintered in a pressureless state. The silicon carbide tube obtained under such harsh process conditions has the characteristics of self bonding and fine particles (particles smaller than 10 microns), manifested as high hardness, light weight, and no pores. Therefore, this type of silicon carbide is highly resistant to corrosion, wear, high temperature, and thermal shock.
corrosion-resistant
Silicon carbide has strong corrosion resistance. Almost all chemicals exhibit inertness, making silicon carbide an ideal material for handling corrosive media. Unlike graphite, silicon carbide does not contain binders and does not dissolve in corrosive solvents.
The corrosion resistance comparison table in the following figure lists the data of silicon carbide (all sintered without free silicon).
Test time: 125 to 300 hours immersion test, continuous stirring
Corrosion rate application guide:
>1000mg/cm2 * Y has been destroyed within a few days
100~999mg/cm2 * Y is not recommended for use for more than one month
50~99mg/cm2 * Y is not recommended for use for more than one year
10~49mg/cm2 * Y is cautiously recommended based on specific applications
0.3~9.9mg/cm2Y is recommended for long-term use
<0.2mg/cm2 * Y Recommended for long-term use, almost non corrosive
Silicon carbide has strong corrosion resistance, oxidation resistance, and thermal shock resistance, and can withstand any strong alkali, high concentration sulfuric acid, nitric acid, phosphoric acid, mixed acids, and hydrofluoric acid.
Resistant to scaling
Compared with metal and graphite heat exchangers, the non stick property of silicon carbide can minimize the tendency of scaling and reduce the impact of scaling on heat transfer efficiency.
Good thermal conductivity
The thermal conductivity of silicon carbide is very good, with a thermal conductivity coefficient of 125.6 w/mK, close to that of impermeable graphite. Compared with other corrosion-resistant materials, the thermal conductivity of silicon carbide is twice that of tantalum, five times that of stainless steel, ten times that of Hastelloy alloy, and fifteen times that of glass, making it the highest thermal conductivity among corrosion-resistant materials.
Therefore, the thermal conductivity efficiency of the heat exchanger is much higher than that of other traditional corrosion-resistant material heat exchangers, which use less heat transfer area under the same heat transfer efficiency. This determines that it can have a smaller size, greatly reducing the actual space occupied by the equipment, thereby comprehensively reducing the cost of use.
High temperature resistance/thermal shock resistance
Pressure free sintered silicon carbide, even in gases above 1900 degrees Celsius, has minimal thermal expansion deformation and can work stably. Due to its high thermal conductivity and extremely low thermal expansion coefficient, pressureless sintered silicon carbide can adapt to rapid alternation of hot and cold in thermal cycles, thus possessing strong thermal shock resistance.
High hardness/easy to clean
Pressure free sintered silicon carbide is one of the hardest heat exchange tube materials, with a density exceeding 98% of the theoretical value. It is impermeable and does not contain any impregnating agents. At the same time, such extreme hardness also means that there will be no pollution in high-purity applications. In fact, every heat exchange tube undergoes a pressure test of 186 Bar before leaving the factory. Therefore, heat exchange tubes can be cleaned not only chemically but also mechanically, and even directly by sandblasting.
Design philosophy
The design of Jiuze silicon carbide heat exchanger follows the concept of replaceable components, and double-sided sealed envelope type O-rings are used at both ends of the heat exchange tubes to ensure the airtightness of the heat exchanger. This design has a simple and reliable structure, making maintenance easier. The baffle plate adopts a steel lined non-metallic spiral baffle plate to ensure a fully supported structure. The thickness of the baffle plate is not less than 5mm; the surface of the baffle plate is polished smooth and deburred.
In addition, when using a double tube plate design, a professional safety compartment design can effectively avoid cross contamination and timely display in case of tube plate leakage, avoiding greater losses.
The steel lined PFA tube plate adopts our company's independently developed steel lined PFA tube plate, using imported large gold PFA material. Before high-temperature pressing, the surface of each tube sheet is cleaned chemically, and after firing, CNC machining is used to ensure the accuracy of the tube sheet.
Basic description:
There are two specifications for the diameter of heat exchange tubes, which are 14.0X1.5mm and 19.0X1.5mm respectively; The length of heat exchange tubes can range from 1000mm to 3000mm, depending on specific usage parameters and the placement space of the heat exchanger;
2. The diameter of the shell can range from DN100 to DN1000;
3. The material of the shell can be selected from carbon steel, fiberglass, or PTFE lined carbon steel or stainless steel depending on the medium of the shell;
4. Single process or multi process design;
5. The minimum heat exchange area of a single heat exchanger is 0.5 square meters, and the maximum is 196 square meters;
6. It can be installed horizontally or vertically;
7. The working temperature ranges from -30 ℃ to+200 ℃;
8. Work pressure ranges from -1 Bar to+8 Bar
9. Double tube plate design can be provided according to GMP requirements.
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INQUIRY FORM Selection parameter table | |||
| Serial Number Report Number* | Date of reporting* | ||
| Type of Exchange Heat Exchanger* |
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| Heat Power Heat Exchange | KW kilowatts | ||
| Position installation position* |
| Phase Change* |
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| Hot Side* | Cold Side* | ||
| Medium (concentration) |
| Medium (concentration) |
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| Inlet temp.[deg.C] |
| Inlet temp.[deg.C] |
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| Outlet temp. [deg.C] |
| Outlet temp. [deg.C] |
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| Flow [kg/h] |
| Flow [kg/h] |
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| Allowed pressure drop [kPa] |
| Allowed pressure drop [kPa] |
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| Working pressure [barg] |
| Working pressure [barg] |
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| Fluid properties Physical properties | Fluid properties Physical properties | ||
| Density [kg/m3] |
| Density [kg/m3] |
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| Viscosity [mPas] |
| Viscosity [mPas] |
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| Thermal conductivity [W/mK] |
| Thermal conductivity [W/mK] |
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| Other Requirements |
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| Note Remarks |
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| 1. * marked must be filled in order to calculate accordingly. | |||
| Items with * must be calculated and filled in for selection calculation. | |||
| 2. If the medium is a mixture, pls provide the ingredients and its percentage. | |||
| If it is confidential, pls provide its physical and thermal property instead. | |||
| If the medium is a mixture, please provide the components and proportions; If kept confidential, please provide the physical and thermal properties of this mixture. | |||
| 3. If there is any parameter missing, pls leave it blank. | |||
| If there are no corresponding parameters, please do not fill in. | |||
| 4.Customized design and production according to customers’ requirements. | |||
| Design and customize production according to user needs | |||
