John Zink Vapor Combustion System

John Zink Company incorporates value-added features developed from years of field testing to provide safe, reliable destruction of hydrocarbon vapors.

How It Works

The major components of a John Zink Vapor Combustion System with a temperature controlled, enclosed combustor are shown on the process diagram.

Start Up

When either a local or remote start signal is received, the assist-air blower starts and purges the stack to ensure a flammable mixture is not present. After the purge is complete, the pilot ignites. The flame monitor confirms stable pilot ignition, then proceeds with normal operation.

Normal Operation

First, vapors flow through the vapor shutdown valve and detonation arrestor (or alternate liquid seal and flame arrestor). After moving through the flashback protection equipment, the vapors enter the combustor through the anti-flashback burners. The vapors are then ignited by a pilot. Note, larger systems introduce the vapors into the combustor in stages to achieve a higher turndown and optimum performance.

The assist-air blower provides partial combustion air and mixing energy to ensure smokeless combustion of the waste vapors. The assist-gas control valve and quench-air dampers modulate independently to maintain the combustor temperature.

The combustion unit is designed to provide efficient destruction of hydrocarbon vapors. The flame envelope will be completely concealed in the combustion chamber. Optional temperature control of the combustion chamber provides higher destruction efficiencies.

Normal Shutdown

Shutdown is achieved by removing the start signal. The vapor shutdown valves and fuel-gas shutdown valves close, and the pilot extinguishes. In addition, the assist-gas control valve closes, the quench air dampers open and the assist air blower stops.

Fault-Related Shutdown

If an unsafe condition is detected during operation, the system immediately initiates an annunciated fault-related shutdown, which results in the same system status as described for a normal shutdown. The system cannot be restarted until the operator corrects the fault and resets the system.

Click on vapor combustion design features for more details. Then contact a John Zink engineer to discuss your vapor combustion options.

Contact John Zink Vapor Control Group at vaporcontrol@johnzink.com.

John Zink Company, LLC
11920 East Apache
Tulsa, OK 74116
United States of America
+1-918-234-1800
800-421-9242 (U.S. and Canada)
email: info@johnzink.com