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Falling Film Gearbox Pillow Plate Heat Exchanger For Heat Recovery Evaporator

Falling Film Gearbox Pillow Plate Heat Exchanger For Heat Recovery Evaporator
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Name: Pillow Plate Heat Exchanger
Main Uses: Evaporation
Voltage: 220v/110v For Optional
Core Components: Bearing, Gearbox, Motor, Pump
Principle: Large Heat Exchange Area
Product Name: Falling Film Evaporator
Aplication: Condensor/evaporator/heat Exchanger
Function: Waste Water Concentration
Feature: High Heat Transfer Coefficient
Warranty: 1 Year
High Light:

Falling Film Pillow Plate


Gearbox Pillow Plate Heat Exchanger


Pillow Plate for Heat Recovery Evaporator

Basic Infomation
Place of Origin: Jiangsu,China
Brand Name: HANPU
Certification: ISO9001,CE
Model Number: HP-MVR
Payment & Shipping Terms
Packaging Details: Bulk with stronge packing
Delivery Time: 30 days after down payment
Payment Terms: T/T, L/C, D/A, D/P, Western Union
Supply Ability: 30000m2 per month
Product Description

                                                      Falling Film Pillow Plate Heat Exchanger for Heat Recovery Falling Film Evaporator

multiple-effect evaporator and concentrator

Evaporation plants are well-proven in installations around the world. There are a variety of configurations and models available – from pre-evaporators to multiple-effect evaporation trains – to accommodate even the most challenging pulp mill or effluent plant evaporation needs


The major advantage to multiple-effect evaporators is the utilization of proven lamella heating surfaces for high efficiency and reliability.



Evaporation plant lamellar

lamella heating surface


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



Black Liquor is a by-product of pulp from mills that make products from trees, such as paper. It is currently used to recover cooking chemicals and produce high-pressure steam used in the pulp and paper-making process. It is composed of different ingredients from these processes such as lignin, hemicellulose, sodium hydroxide (NaOH) and sodium sulfide (Na2S). The lignin compound in black liquor can be used to make biofuel but it can be expensive to produce and so fuel made from it is not very common.


However, and according to the International Energy Agency (IEA), the future of using black liquor as fuel is promising and it is seen as the fifth most important fuel on earth!


Black liquor evaporation

Black liquor recovered from pulping contains 14-17% dissolved solids

These solids are composed of about 1/3 inorganic chemicals that were in the white liquor added to the digester

The remaining 2/3 consist of the organic chemicals extracted from the wood

Black liquor must be concentrated to above 60% solids so that it will burn without supplemental fuel


Basic process requirements

Efficient use of energy

Efficient separation of water vapor from black liquor

Proper separation of methanol, tall oil soap

Concentration of black liquor to 75-85% dry solids

Falling Film Gearbox Pillow Plate Heat Exchanger For Heat Recovery Evaporator 0




Evaporation of weak black liquor to separate water and create a combustible product-strong black liquor


The three main processes that occur in the evaporator are:

Black liquor+heat               to          Strong Black liquor + Water + Steam

Condensate + Steam         to          Clean + Dirty condensate + NCG

Black liquor                        to           Black liquor + Soap (only softwood)


How to reach 80-85% dry solids?

Due to the high viscosity

MP-steam as heating medium

liquor temperature 175 ℃ in final concentrator


Liquor retention time

evaporator acts also as a LHT-reactor


Duplex construction material

high alkali content may cause Stress Corrosion Cracking (SCC)


Energy-efficiency for reduced costs

Highest dry solids liquors with maximum availability using crystallization technology

Cleanest reusable condensates using the minimum amount of steam

Lowest steam and electricity consumption


Tolerate even non-soluble scaling

Falling Film Gearbox Pillow Plate Heat Exchanger For Heat Recovery Evaporator 1

Falling Film Gearbox Pillow Plate Heat Exchanger For Heat Recovery Evaporator 2

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Fax : 86-512-58797983
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