Working principle of falling film evaporator:
Falling film evaporation is the process of adding material and liquid from the heating chamber of the falling film evaporator to the pipe box, and evenly distributing it through the liquid distribution and film forming device to each heat exchange tube. Under the influence of gravity, vacuum induction, and airflow, it flows in a uniform film form from top to bottom. During the flow process, the steam is heated and vaporized by the shell side heating medium, and the generated steam enters the separation chamber of the evaporator together with the liquid phase. After sufficient separation of the vapor and liquid, the steam enters the condenser for condensation (single effect operation) or enters the next effect evaporator as the heating medium, thus achieving multi effect operation. The liquid phase is discharged from the separation chamber.
Classification of falling film evaporators:
Single effect falling film evaporator, multi effect falling film evaporator (double effect falling film evaporator, three effect falling film evaporator, four effect falling film evaporator, etc.), MVR falling film evaporator, plate type falling film evaporator, tube type falling film evaporator, etc.
SCOPE OF WORK
Mechanical and Fabrication guarantee
Design including strength calculation (including erection condition) stress analysis and detail design based on applicable Codes, Local Regulation, Project Specifications and Standards
Thermal Design (Thermal Rating)
All technical certifications required for design work as per local regulations
Stability check (during transport, lifting and hydrostatic test) and loading data for base design
Structural analysis for main body and its support for operation load
Material procurement
Material Test and Certificates as per applicable Code and Specifications
Manufacturing
Post weld heat treatment as per code and specification
PMI (Positive Material Identification)
All NDEs as per Project Specification
Welding procedure qualification test
WPS & PQR
Welder performance test
Hydrostatic test at BlDDER shop as per Code & Local Regulations, Specifications.
Installation work for vessel internals supplied by Bidder
External surface preparation and painting as per Specification
Packing and marking as per project specificationsPreservation during transportation and storage (Including Seaworthy packing for oversea manufacturer)
Internal protection from moisture: N2 ChargeAll activities to meet requirements of Data Sheets, Specifications, Codes and Standards, Local Regulations
1. Q:Are you a manufacturer or trading company?
A:We are a manufacturer with over thirty years of experience in China.
2.Q:Can we visit your factory before placing orders?
A: Sure, warmly welcome to our factory!
3.Q:What's the information needed if I send one inquiry ?
A : Please tell us the working conditions, mediums,temperature ,pressure, equipment ' s material,size,quantity, and other special requests.
4.Q:How does your factory do quality control?
A: Quality is priority ,we make relevant strict testing before delivery.
Our factory has already obtained ASME, GOST, ISO9001 quality and ISO 14001 Environmental management system certificate.
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