Port Wentworth, Georgia

Chloride Removal Process (CRP)

Energy Optimization Project No. PW13901By Auston Bagnas (CRP designer)

Years 2015-2016

Project Overview:

This project is intended to remove chloride from the black liquor process at the Port Wentworth Mill in Port Wentworth Georgia.Chloride concentrations are known to foul flue gas piping and affect the melting properties of the ash in the Recovery boiler. This can also corrode and damage the facility and may require frequent shut downs for water washing and repairs. As a result there are significant losses in production and capacity. (Picture: black liquor)

Ideation Process:Layout:Vendor drawings were utilized to determine a vessel location and a footprint in which the facility would be erected.

Placement:A location was chosen based on necessity, availability, and access within the existing mill site.

Process:This was also considered in the placement and was incorporated with the existing process of the mill.

Maintenance:Access to major components is a requirement for repairs, replacements, and maintenance. Design had to accommodate these needs.

(Picture: sketch of the layout and surrounding facilities)

Piping & Instrumentation Diagram (P.&I.D.s)

A flow diagram, or piping schematic, is used to show the process flow for a facility or process.This design was a collaboration with the vendor, myself, and the project engineer for the CRP facility.This flow diagram best represents how the piping will be designed. It also locates instrumentation and assemblies that will be installed. This drawing is a valuable source of information for other drawings such as the piping plans, isometrics, tie-in drawings, and can further be used by operations after installation.

General Arrangements (G.A.s)

The general arrangements are drawn to show tank & vessel locations along with the structural design. These drawings are very basic for clarity.

Piping Plans & Sections

These drawings show the piping layout, vessel locations, and structural information. The P.&I.D.s, G.A.s, Tie-in drawings, and isometrics will be the primary source for information when installing prefabricated items on this project.

CRP 3D Model

A 3D model was created to best identify any layout concerns. The vessels were created and inserted along with the structural members and primary piping. Multiple disciplines were incorporated into the design. Access for electrical and instruments were considered. The structural department located steel members based on future pipe installations and chases. Foundations were designed to accommodate pumps and vessels.

CRP 3D Model (cont.)

Alternating views were utilized for orientation and installation of assemblies and equipment. Structural was able to identify locations for bracing based on the location of many assemblies. Repair, removal, and maintenance was also considered in locating those braces. Handrails and eye wash stations were installed for safety.This model was also used by construction to better understand how the facility would look when installed.

Construction & InstallationAfter pipe and vessel fabrication construction crews began installation of the facility. Here are two photos taken during the construction phase of the CRP facility. Scaffolding is erected for access and installation of piping and insulation for the vessels.Minor field modifications were made. I was onsite and able to work through some unforeseen challenges. A complete walk-down of the facility was made and changes noted and then updated per our drawings. This is intended to maintain a cohesive set of drawings with the most accurate information possible and is also a form of double checking to ensure everything was properly installed and finalized.

Installed, commissioned, & running.

November 2016 the CRP was finally brought online and is now successfully removing chloride from the process.There were some field modifications and design changes required to finish this project but nothing abnormal or substantial. Overall the project was a great success and finalized on time and on budget.