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Heating Cooling SUS316L Pillow Plate 14mm Spot By Laser Welding

1 set
Heating Cooling SUS316L Pillow Plate 14mm Spot By Laser Welding
Features Gallery Product Description Request A Quote
Advantage: Pillow Plate Jacket
Key Selling Points: Automatic
Material: SUS304/SUS316L
Voltage: Customized
Feature: Energy Saving
Weight: According To Type
Liquid Flow Rate: Customized Made
Power Source: Vapor
Welding Technology: Laser Welding
Warranty Of Core Components: 12 Month
High Light:

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Basic Infomation
Place of Origin: Jiangsu,China
Brand Name: HANPU
Certification: ISO9001,CE
Model Number: HP-MVR
Payment & Shipping Terms
Packaging Details: Bulk with strap
Delivery Time: 3 month
Payment Terms: T/T, L/C, D/A, D/P, Western Union
Supply Ability: 1 set/ 3 month
Product Description

Chinese pillow plate jacket exchanger for falling film black liquor evaporator


Black Liquor

Black liquor is the waste liquor from the kraft pulping process after pulping is completed. It contains most of the original cooking inorganic elements and the degraded, dissolved wood substance. The latter includes acetic acid, formic acid, saccharinic acids, numerous other carboxylic acids (all as the sodium salts), dissolved hemicelluloses (especially xylans), methanol, and hundreds of other components. It is an extremely complex mixture. About 7 tons of black liquor at 15% solids (about 10% organic chemicals and 5% inorganic chemicals with a total solid is produced per ton of pulp. The black liquor must be concentrated to as high a solids content as possible before being burned in the recovery boiler to maximize the heat recovery. The viscosity rises rapidly with concentration above 50%, with softwood black liquors being more viscous than hardwood black liquors. Black liquor is usually fired at 65%–70% solids content.



There are two basic types of evaporator equipment in service today for black liquor evaporation:


Rising Film Evaporators

Also referred to as a Long Tube Vertical (LTV) evaporator, this design has dominated the Industry for decades and remains a common sight in older mill operations.


Falling Film (FF) Evaporators

This evaporator design relies either on tubes or plates as heat transfer surfaces. Liquor is processed on the inside of the s intubular units but on the outside of the heat transfer surface in plate designs.




Name Pillow plate series Shell and tube heat exchanger Detachable plate heat exchanger Spiral plate heat exchanger
Operating temperature range <800℃ <800℃ <170℃ <350℃
Maximum pressure <60 bar <200 bar <32 bar <25 bar
Heat transfer coefficient to water[W/m2·℃] 3500 2700 5600 2000
Application of air and water heat exchange fit fit not fit Partial fit
Immersion in tank or water fit Partial fit not fit not fit
Welding of tank and reactor Applicable not applicable not applicable not applicable
Install into the existing reactor and other equipment Flexible application Partial applicable not applicable not applicable
All welded construction Applicable Applicable not applicable not applicable
Heavily contaminated liquids and other applications Applicable Applicable Partial Applicable Applicable
Weight per unit area low high low high
Falling film, condenser and evaporator fit fit Partial fit Partial fit



Critical equipment for the chemical pulp mill

Black liquor evaporation is an essential part of the chemical recovery process as it significantly concentrates the dry solid matter in black liquor so that the liquor can be effectively combusted in recovery boiler. The water removed from the liquor can be segregated and processed so that it can be reused in the mill – reducing fresh water requirements, effluents, and saving money.


Evaporators and concentrators, with their lamella heating surfaces, are adept at processing the spent cooking liquors or mill effluents using the minimum amount of energy while maximizing product dry solids, plant availability, and condensate quality. The lamella heating surfaces are inherently non-scaling. This allows the use of various heat sources inside the lamella, allowing the mill to select the most energy-efficient process connection.

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