The Microclor® onsite hypochlorite generation system (OSHG) incorporates many patented, unique and novel features. The most significant features are as follows:
- Vertical, Multi-Cell Configuration
- Hydrogen Management with Multiple Safety Interlocks
- Brine Conductivity Control
- Fixed Voltage Full Wave D.C. Rectification
- High Velocity Electrolyte Flow
- Recirculating Cell Loop
- No Internal Cell Baffles or Gaskets
There is no other OSHG system in the marketplace that possesses the same combination of thoughtful design and innovation.
"1,000 Pound-Per-Day Microclor® System"
A brief discussion of each individual advantage follows:
Vertical, Multi-Cell Configuration
The vertical orientation of the electrolytic cells allows for immediate and passive removal of waste hydrogen generated in each cell as part of the hypochlorite generation process. The Microclor® vertical cells are open to the atmosphere thereby eleminating hydrogen containment and pressurization. The multi-cell configuration allows for parallel evacuation of hydrogen while maintaining hydraulic flow in series. The multi-cell configuration also provides built-in redundancy. If a cell is damaged, that cell can be removed and the system can be run in a lower capacity mode generating sodium hypochlorite until the damaged cell can be repaired or replaced.
Hydrogen Management with Safety Interlocks
Cells are configured in a vertical format with a recirculation loop in each cell that allows for passive release of the hydrogen gas from each cell. Hydrogen gas is prevented from passing from cell to cell. The design increases operator safety and substantially reduces the possibility of hydrogen gas build-up in the cell and the potential of catastrophic failure. Additionally, by removing the hydrogen immediately from each cell, the configuration eliminates the blinding of the electrodes by hydrogen gas bubbles. Safety interlocks include dilution blower operations, hypochlorite tank air pressure and air flow at the vent to reinforce system safety and best operational practices.
Brine Conductivity Control
Constant current in the electrolytic cells is achieved via a current feedback loop whereby the brine pump speed is controlled by the system programmable logic controller (PLC). This feedback loop accounts for variations in water temperature, brine density, and electrical resisitance that occur through an ooperating cycle. The PLC controlled positive displacement gear pump with speed control utilizes brine conductivity to maintain constant amperage in the cells regardless of operating conditions. This simple concept eliminates the need for complex and inefficient power supplies.
Fixed Voltage D.C. Rectification
Brine conductivity amperage control allows for the use of a simple, efficient and robust full-wave fixed voltage rectifier. The D.C. rectifier design consists of a fully isolated step-down transformer and bridge rectifier with a power factor of 99%.
High Velocity Electrolyte Flow
The passive hydrogen gas removal design provides a hydraulic lift within the cell and creates velocity through the recirculation loop and across the cell plates. This high velocity flow results in a scouring action between the vertically mounted electrodes. This scouring action helps to minimizes scale formation and can reduce maintenance.
No Internal Cell Baffles or Gasketing
There are no internal cell baffles or gaskets found inside the electrolytic cells. Eliminating internal components inside the cell greatly extends the life of the cell. The cells are built with clear acrylic housings that allow for direct visual inspection of the electrodes which help operators verify proper operation and determine if cleaning is required.
Cell Maintenance and Replacement
The Microclor® vertical multi-cell design allows for each cell to be easily removed from the cell carrier piping. This makes for simplified cell maintenance and or replacement. The multi-cell configuration also allows for a cell to be easily removed from the cell train and continue to operate at reduced production capacity but still able to produce free-chlorine for disinfection.
Cell cleaning is truly clean-in-place (CIP). The vertical cells can be completely drained and cleand in-place due to the elimination of baffles and the need to circulate or pump cleaning acid through the system.