VRU Model Selection Guide
VRU model selection starts with the vapor stream, not with a catalog number. PollutionCtrl uses the gas composition, flow pattern, pressure, temperature, recovery destination and site requirements to define the equipment package.
Start with the process data
| Input | Information to provide |
|---|---|
| Vapor composition | Hydrocarbons, benzene or BTEX, oxygen, water, inert gas and any corrosive or polymerizable components. |
| Flow | Minimum, normal, peak and simultaneous operating cases. |
| Operating conditions | Inlet pressure, temperature, tank pressure limits and expected changes during loading or transfer. |
| Product objective | Recovered liquid or gas destination, acceptable losses and outlet emissions target. |
| Site conditions | Hazardous area, climate, utilities, layout, access, drainage and control-system interface. |
Compare the two main VRU routes
| Selection question | Condensation + Adsorption | Adsorption + Absorption |
|---|---|---|
| What does the process emphasize? | Recovering condensable hydrocarbons before polishing the remaining vapor. | Capturing, concentrating and transferring compatible vapor into an absorbent. |
| What must be checked early? | Dew point, cooling duty, water, condensate handling and adsorption load. | Absorbent compatibility, water, adsorption heat, liquid circulation and regeneration. |
| Typical equipment additions | Cooling or refrigeration package, condenser and condensate separator. | Absorber, circulation pump, heat exchanger and recovery liquid system. |
| Best next step | Confirm gas analysis and cooling utility conditions. | Confirm gas analysis and absorbent selection basis. |
Model and package options
- Standard or project-specific VRU skid
- Tank farm, loading rack or marine loading configuration
- Indoor, outdoor or containerized arrangement where appropriate
- PLC control, analyzer interface and remote monitoring
- Customer-supplied or vendor-supplied utilities and tie-ins
- Installation, commissioning, training and spare-parts support
What a quotation should include
A useful quotation identifies the design basis, equipment list, battery limits, utilities, control philosophy, hazardous-area assumptions, documents, testing, packing, delivery and site services. If a value depends on a gas analysis or field measurement, the quotation should say so.
Do not select a VRU from flow rate alone. Two streams with the same flow can require different equipment when their composition, oxygen, water, pressure or recovery destination differs.
Send your VRU data sheet
Share the information available today. The engineering team can identify missing data and recommend a preliminary product route.