Scraped Surface Heat Exchanger Unit Model SPXN China Supplier

Parts for SPXU scraper heat exchangers can be manufactured in a variety of configurations and materials, so each heat exchanger unit can be personalized to meet the specific process requirements of each application. Products comply with GMP, CFIA, 3A and ASME design standards and can be provided with FDA certification.

• Drive motor power from 5.5 to 22kW

• Wide range of output speed (100~350 r/min)

• Chromium-nickel-plated carbon steel and 316 stainless steel heat transfer tubes designed for enhanced heat transfer

• Standard stainless steel or plastic scraper, custom plastic scraper that can detect metal

• Spindle diameters based on fluid characteristics (120, 130 and 140mm)

• Single or double mechanical seal is optional

 Dielectric interlayer

Dielectric interlayers of scraper heat exchangers for liquid, steam or direct expansion refrigeration

Jacket Pressure of dielectric sandwich

232 psi(16 MPa) @ 400° F (204° C) or 116 psi(0.8MPa) @ 400° F (204° C)

Product Side Pressure. Product side pressure

435 psi (3MPa) @ 400° F (204° C) or 870 psi(6MPa) @ 400° F (204° C)

Heat transfer cylinder

• Thermal conductivity and wall thickness are key design considerations in selecting heat transfer tubes. The cylinder wall thickness is precisely designed to minimize heat transfer resistance while maximizing structural stability.

• Pure nickel cylinder with high thermal conductivity. The inside of the cylinder is plated with hard chrome and then ground and polished to make it smooth to resist abrasion from scrapers and grinding products.

• Chromium-plated carbon steel tubes provide high thermal conductivity at a reasonable cost for products such as peanut butter, shortening and margarine.

• Stainless steel tubes specifically designed to enhance heat transfer for acidic products and provide flexibility in the use of cleaning chemicals.

strickle

Scrapers are arranged in staggered rows on the shaft. The scraper is secured to the shaft of the scraper heat exchanger by a robust, durable, specially designed "universal pin". These pins can be quickly and easily removed and the scraper replaced.

seal

Mechanical seals are specially designed to be easy to assemble and maintain, and to ensure reliable operation.

The heating rate of the product and the residence time in the heat exchanger are controlled by the volume of the equipment. Heat exchangers with small diameter shafts provide large annular gaps and extended residence times, and can handle bulk products and products with large particles. Heat exchangers with large diameter shafts provide smaller annular gaps for high speeds and turbulence, and have higher heat transfer rates and shorter product residence times.

Drive motor

Choosing the right drive motor for the scraper heat exchanger provides the best performance in each individual application, ensuring that the product is vigorously stirred and continuously scraped off the heat transfer wall. The scraper heat exchanger is equipped with a direct-drive gear motor with multiple power options to provide optimal performance for specific applications.

 Heat-sensitive product

Products degraded by prolonged exposure to heat can be treated effectively in scraper heat exchangers. The scraper prevents the product from remaining on the heat transfer surface by constantly removing and renewing the film. Because only a small amount of the product is exposed to the overheated surface for a short period of time, burns can be minimized or eliminated to avoid coking.

Sticky product

Scraper heat exchangers handle sticky products more efficiently than traditional plate or tube heat exchangers. The product film is continuously scraped off the heat transfer wall to generate extremely high heat transfer rates. Continuous agitation will cause turbulence, making heating or cooling more uniform; The pressure drop can be effectively controlled by the product annulus area; Agitation can eliminate stagnant areas and product accumulation; And it's easier to clean.

Granular product

In scraper heat exchangers, it is easy to handle products with particles that tend to clog conventional heat exchangers, a problem that is avoided in scraper heat exchangers.

Crystalline product

Crystallized products are ideal for processing scraper heat exchangers. The material crystallizes on the heat transfer wall, and the scraper removes it and keeps the surface clean. The great supercooling degree and strong agitation can form a fine crystal nucleus.