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Wheat Straw Pulp Evaporation Station With Five Effect Pillow Plate Evaporator

1 set
Wheat Straw Pulp Evaporation Station With Five Effect Pillow Plate Evaporator
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Applicable Industries: Paper Industry
Core Components: Engine,vacuum Pump
Advantage: Consumption Saving,low Run Expense
Main Power: Electricity
Product Name: Five-effect Pillowplate Evaporator
Key Selling Points: Easy To Operate
Voltage: 220/380/440V
Plate Material: SS304/316L/Ti
After Warranty Service: Video Technical Support, Online Support, Field Maintenance
Warranty: 1 Year
High Light:

wheat straw pulp evaporation station


five effect evaporation station


pillow plate evaporation station

Basic Infomation
Place of Origin: Jiangsu province,China
Brand Name: HANPU
Certification: ISO,CE
Model Number: HP-MEE
Payment & Shipping Terms
Packaging Details: Bulk with stronge packing
Delivery Time: 90 days
Payment Terms: T/T, L/C, D/A, D/P, Western Union
Supply Ability: 1 set/ 90days
Product Description


Weak Black Liquor (WBL) from the brown stock washers is typically at 13-18%TS. Most of this water content must be evaporated to produce a material with high enough solids to support effective combustion in the recovery boiler, typically between 65% and 80%TS.

During evaporation to this level of solids, various volatile components (sulfur compounds, methanol, etc.) are released from the liquor and must be separated from the condensate to allow reuse in the fiberline and recausticizing. From this point of view, the evaporation plant actually serves as a"water factory"within the mill. Black liquor also contains a substantial fraction of inorganic compounds which, during the evaporation process, reach their solubility limit and can deposit as scale on the evaporator heat transfer surfaces greatly limiting the operating capacity of the evaporation plant and of the entire recovery island.


The inherent complex composition of black liquor translates into several interdependent design requirements for the evaporators:

The evaporation plant must efficiently transfer heat for the evaporation of the black liquor.

It must do so while avoiding scale formation on the heat transfer surfaces.

The evaporation plant must also produce sufficiently cleancondensate fractions to satisfy the needs of the pulp mill and recausticizing area, thus greatly reducing the fresh water intake of the mill.

Volatile components and NCGs must be removed and conditioned for safe disposal via incineration.



Application of MVR Technology:


When the concentration of evaporated liquid is raised and its boiling point is raised within a certain limit, for example, when the concentration of evaporated black liquid is below 20%, the boiling point is raised no more than 1.5 ℃.


It is used in the areas or enterprises where the electricity price is cheap and the heat energy is expensive.


2. Application of technology in black liquor evaporation of pulp

Taking the evaporation of wheat straw pulp black liquor as an example, the combination evaporation process of MVR technology and multi effect evaporation was compared with the multi effect evaporation process. The details are as follows.


2.1 main parameters and evaporation scheme


The results show that the flow rate of dilute black liquor is 128.6t/h, the temperature of dilute black liquor is 70 ℃, the concentration of dilute black liquor is 10%, the concentration of concentrated black liquor is 45%, and the evaporation water is 100t / h. The multi effect evaporation process is 5-effect evaporation station, and the combined evaporation process is MVR pre concentration + 5-effect evaporation station.


item 5 effect station combined evaporation process
MVR pre concentration 5-effect evaporation station
Evaporation water (t/h) 100 64.28 35.72
Incoming concentration(%) 10 10 20
Out concentration(%) 45 20 45
Evaporator area(㎡) 10000 8500 4000
Condenser area(㎡) 800 / 300
Consumption Steam (t/h) 25 / 9
Electricity(kWh/h) 500 1600 180
Water(t/h) 900 / 350
Running cost RMB/hour 4500 960 1633
RMB/T water evaporation capacity 45 25.93
RMBx10000/Day 10.8 6.2
RMBx10000/Year(340days) 3672 2115


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Wheat Straw Pulp Evaporation Station With Five Effect Pillow Plate Evaporator 0

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Our certificate

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