phone: 504-348-8566

STILL PURE PRODUCT LINE

  • What is a StillPure VOC Condenser?
  • What are VOCs and why is a condenser necessary?
  • What is a StillPure VOC Condenser?

The StillPure name denotes several styles of vapor condensers designed by Gly-Tech for the capture of condensable vapors emitted from the still column of glycol reboilers. The StillPure is designed to remove 99% or more of the condensable VOC’s on an annualized basis.

VOC stands for Volatile Organic Compound. VOC’s, as they apply to the StillPure, are those hydrocarbon vapors emitted from a reboiler still column. They include Benzene, Ethylbenzene, Toluene and Xylene, from which the term “BETX” is derived. BETX and other VOC’s are considered to be a hazard to health and the environment. For that reason it is important to prevent their entering the atmosphere.

Alternatives to a Condenser

  • Flare
  • Thermal Oxidizer
  • Carbon Adsorption
  • Eductor

A VOC Condenser cools vapor from a still column to cause water and hydrocarbon liquids to fall out. When condensation is complete, the collected liquids are pumped to storage, separation or waste. The remaining gas, or non- condensables, must be burned through a flare or thermal oxidizer, vented, or in the case of Strip Burn Technology, burned as fuel in the reboiler.

A VOC Condenser is not a VRU unless it has a means to “recover” the hydrocarbon vapor and place it into the process stream. Gly-Tech’s G-10 series is a VOC Condenser. The G-20 and G-30 lines can be equipped to serve as VRUs, but do not come standard as one. The G-40 is the only true VRU standard to Gly-Tech’s product line.

The StillPure G-20 Series Overview

 The StillPure G-20 Series

The G-20 is a single fan, forced draft condenser. The  G-20-P uses a pneumatic pump and level control, is all electric, is a fan and coil unit only

Model G-20: How it Works

The StillPure Model G-20 is an airflow condensing unit designed for the recovery of condensable volatile organic compounds (VOCs) from vapors emitted from a glycol reboiler still column during normal operation.  The standard unit is self-contained and sits on a 42”x42” footprint.  The standard overall height is 10’.  For some applications a custom skid and frame can be provided to alter both the footprint and the height.

As the vapor cools in the coil, it is condensed into component liquids.  These liquids drain into a collection pot.  A level control senses liquid accumulation and sequences a pneumatic or electric pump for liquid removal.  On some units a blow case can be utilized.  A sight glass is provided to track fluid expulsion.

Vapor leaving the reboiler still column is piped to the StillPure finned tube cooling coil.  As the vapor passes through the coil heat is dissipated by airflow over the finned surface.  A laterally mounted, thermostat controlled fan and motor provide the airflow.  Each coil, fan and motor is independently sized to the operating parameters outlined by the user. To increase or decrease the capacity of the StillPure Model G-20 requires re-sizing of one or more of these components.

In some applications Off Gas (non-condensable VOC’s) can be piped to a flare, to a direct fired unit for combustion (using a special gas/air mixer) or to a low- pressure vapor recovery unit (VRU) to achieve 100% recovery.

The StillPure Model G-20 is designed to remove 99% or more of the condensable VOC’s on an annualized basis.

Model G-20: Capacity

The G-20 line offers a number of possible units based on capacity. The Armstrong Fan and Motor Units can be sized for applications ranging from 10

MMscf/day dehydration systems to 100 MMscf/day dehydrations systems. Gly- Tech will determine the maximum vapor load to be condensed and offer the client an engineered solution to their still column vapor recovery needs.

Advantages

  • Thermostat control guarantees consistent condenser performance.
  • Off gas can be combusted in the fire tube or by a flare.
  • Condensed hydrocarbon liquids can be collected and sold.
  • Collection pot comes in code and non-code model.
  • Small Footprint

The StillPure G-30 Series Overview

The StillPure Model G-30-PH

The StillPure Model G-30-PH is a vertical airflow condensing unit designed for the recovery of condensable volatile organic compounds (VOCs) from vapors emitted from a glycol reboiler still column during normal operation.  The G-30 is a dual fan, vertical coil forced draft condenser. The standard unit is self-contained and sits on a 12” x 4′ footprint.  The overall height is approximately 4’11″. For some applications, a custom skid and frame can be provided to alter both the footprint and the height. The Armstrong Fan and Motor Units can be sized for applications ranging from 100 MMscf/day dehydration systems to 500 MMscf/day dehydrations systems. Even larger capacities can be handled with custom designs. Gly-Tech will determine the maximum vapor load to be condensed and offer the client an engineered solution to their still column vapor recovery needs.

Gly-Tech Services is a leading provider of Dehydration Services, including Engineering design and field services, Technical Support for troubleshooting, system cleanings, filter separator cleaning and start up & commissioning. 

Gly-Tech is also a leading provider of Specialty Chemicals for inhibiting of glycol, controlling foaming issues and the control of asphaltines in glycol. We also provide material sales, replacement filter elements and water vapor tubes.

Gly-Tech also provides safe and thorough high velocity flushing and chemical cleaning services for the

commissioning and maintenance of critical systems as well as Tank & Vessel cleanings and Vacuum Truck services.

For more information on Gly-Tech’s STILL PURE VOC/BTEX units and other services, please contact our sales department at 504-348-8566.

MODEL VARIETIES

All models except the G-10-A Ambient Air Unit are thermostatically controlled. Units may be equipped with 2 or 3 phase condensed liquid collection pots. A Code stamped blow case is also available for evacuation of condensed liquids into low-pressure separation up to 150 psig. Units can be designed to handle dehydration systems with gas flow rates ranging from 10 MMscf/day to 1 BCF/day.

G-10 SERIES

G-10-A Ambient temperature unit

This is a vertical finned pipe cooler complete with blowcase for the collection and evacuation of condensed liquids. It requires no electric utilities, however it requires compressed air or gas at a service pressure of 100 psi to operate pneumatic blowcase.

G-20 SERIES

G-20-P Standard Pneumatic/Electric fan cooled unit

This is a single thermostatically controlled force draft fan unit that requires 240V or 480V electrical utility. It also requires compressed air or gas at a service pressure of 100 psi to operate pneumatic controls and pump.

G-20-E Standard Electric fan cooled unit

This is a single, thermostatically controlled force draft fan unit that requires 240V or 480V electrical utility. The controls and pump are electric.

G-20-F Fan condensing unit only (no collection pot) requires 240V/480V electric utility.

G-30 SERIES

G-30-P Pneumatic/Electric fan cooled unit

This is a twin fan force draft unit that requires 240V/480V electrical utility. Each fan is independently thermostatically controlled. It requires compressed air or gas at a service pressure of 100 psi to operate pneumatic controls and pump.

G-30-PH Pneumatic/Electric fan cooled unit

This is a twin fan thermostatically controlled force draft unit that requires 240V/480V electrical utility. It also requires compressed air or gas at a service pressure of 100 psi to operate pneumatic controls and pump. Unlike the Standard unit this has the condenser mounted horizontally with vertical airflow for a lower profile.

G-30-E Standard electric fan cooled unit

This is a twin fan thermostatically controlled force draft fan unit that requires 240V/480V electrical utility. The controls and pump are electric.

G-30-EH Horizontal electric fan cooled unit

This is a twin fan thermostatically controlled force draft unit that requires 240V/480V electrical utility. The controls and pump air electric. Unlike the Standard unit this has the condenser mounted horizontally with vertical airflow for a lower profile.

G-30-F Twin Fan condensing unit only (no collection pot) requires 240V/480V electric utility.

G-40 SERIES

G-40-C Mechanical Refrigeration unit.

Complete with code constructed and stamped blowcase for liquid evacuation into low-pressure separation at pressures of up to 150 psig. Thermostatically controlled vapor temperatures down to 60 degrees F. 

COMING SOON - Gly-Tech Gas Eliminator