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Hargrove remains committed to our clients beyond design engineering throughout the life of the plant to ensure optimal plant operations and reliability.

Chlor-Alkali​ Expertise & Capabilities​

Hargrove’s chlor-alkali Team works on chlor-alkali projects daily – continuously assisting clients with both capital projects and maintenance activities.

Hargrove has experience designing and modifying each of these plant types:​

  • Type I – Liquid Chlorine ​
    • Can include HCl and bleach​
  • Type II – Hydrochloric Acid​
    • Producing only HCl requires supplemental H2 source or bleach decomposition​
    • Can also produce bleach to consume additional Cl2​
  • Type III – Bleach only​
    • Also known as a salt to bleach plant​

Each type has various production constraints and feed requirements to the auxiliary product units. We have performed product optimization studies to verify production capacities in various operating modes.​

​In 2021, Hargrove committed to the United Nations Global Compact (UNGC). As part of this commitment, Hargrove developed a sustainability plan focused on our environment, labor, human rights, ethics, and sustainable procurement with a monitoring system that is designed to drive continuous improvement of these footprints and practices. ​

CHLOR-ALKALI TEAM

TOTAL ELECTROCHEMICAL UNIT (ECU) STUDIED, DESIGNED & INSTALLED SINCE INCEPTION​

​Total ECU’s for Projects Executed: 3,819,465​
Total ECU’s for Feasibility Only: 2,381,545​
Total ECU’s for Projects Currently Under Construction: 212,500​
Total ECU’s Designed and Installed: 1,402,920

TRANSFORMER RECTIFIER CAPABILITIES​

Transformer-Rectifiers​

  • Internal Value-Added Relationship with Process Engineering​
    • Cell Room Electrolyzer and TR Interface​
    • SOL vs. EOL Design​
  • Full-Service Power Study Analysis​
    • SKM, ETAP, Easypower​
    • Load Study, Short Circuit, Arc Flash​
    • Interface with site (brownfield or greenfield)​
    • Harmonic Analysis​
      • Harmonic Filter Sizing​
      • Rectifier Selection (6-Pulse, 12-Pulse, 18-Pulse, 24-Pulse)​

DC Bus Bar Design​

  • Copper vs Aluminum (Selection and Sizing)​
  • DC Switches ​
  • DetaClad​
  • Bus Insulators​
  • Miscellaneous Components​
    • Flex, Spacers, Plates, Belleville Washers​

Polarization Rectifiers​

Voltage Monitoring ​

Design Code and Best Practices​

  • Electrolytic Cells NEC Article 668​
  • NFPA 70E Article 310 Safe Electric Work Practices for Electrolytic Cells​
  • CI Pamphlet No. 139-Electrical Safety in Chlor-Alkali Cell Facilities​
  • Grounding Design​

CHLORINE INSTITUTE MEMBERSHIP​

Hargrove supports the Chlorine Institute’s goal to advance the ​ chlor-alkali industry’s safe, secure, and sustainable production of its mission chemicals.​

Hargrove fulfills this commitment through multiple activities:​

  • Attendance at Fall and Spring CI meetings every year​
    • Interaction with other CI members​
    • Discussions of plant issues and lessons learned​
    • Discuss leading technologies​
    • Attending and presenting at bi-annual Technical Symposia​
  • Application of CI Pamphlets to process design and optimization​
    • Design team frequently references and implements information in these pamphlets.​
  • Educating new customers on the benefits of CI membership

SAFETY IN DESIGN EXPERIENCE

Material Selection & Specifications​

  • Equipment​
  • Instruments​
  • Piping / Valves​

Containment​
Emergency Vent System (EVS) Design​
Rectifier Fire Wall Requirements​
Protective Coatings​
Electrical Safety​

  • Electrical Classification​
  • Cell Room Grounding Requirements​
  • Bus Bar / Switch Layout​
  • ​

Hydrogen Handling Safety​

  • Stack Fire Extinguishing Systems​
  • Cell Room Ventilation Design​

Personnel Protection​

  • Chlorine Monitors​
  • Safety Shower & Eye Wash Stations ​

Piping Stress Analysis​
SIS / SIL Considerations​
PSM & Process Hazards Analysis (PHA)​

  • HAZOP/What-If​
  • Layers of Protection Analysis (LOPA)​

OUR DEDICATION TO THE CHLOR-ALKALI INDUSTRY​

Hargrove’s chlor-alkali Team works on chlor-alkali projects daily – continuously assisting clients with both capital projects and maintenance activities. We have developed an expansive repository of industry-specific standards, specifications, and design tools which allows us to work efficiently and effectively. This experience and library help to minimize engineering cost and schedule. ​

​Our membership in the Chlorine Institute provides access to the CI pamphlets, which equips Hargrove with the latest industry best practices for process and transportation safety. Additionally, Hargrove participates in the annual CI meetings, where we gain significant knowledge from technical presentations and networking with industry peers.​

​Hargrove’s Team of process engineers includes teammates with chlor-alkali operational experience. Design input from their direct field experience helps ensure safety in design and ease of startup, operations, and reliability post-startup. ​

Hargrove remains committed to our clients beyond design engineering throughout the life of the plant to ensure optimal plant operations and reliability.​

Learn more about our commitment to sustainability

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