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Injection odorization system design

Over the years several methods have been developed

,and used to place odorant in natural gas. One commonly utilized style of odorization system is the injection style odorizer ,which systematically injects small volumes of odorant into the natural gas flow .this type of system has undergone developments which has led to improvements in the injection process.

There are basic considerations of system operation,which when included in design ,make the system valuable . These should include:

Odorant selection .flow proportional operation basic system design verification of operation. System monitoring determination of malfunction and alarm .fail-safe operation. Matching the odorant recipe to the natural gas in the stream nivolves knowledge of he injection style odorizer ,which systematically injects smal consultation with an odorate manufacturer is suggested.

Chose a system that will operate in proportion -to-flow. All odorant systems should use a ratio relating injection rate to measured flowrate as the principal method of operation .usually this tatio is referenced in pounds

of odorant into the natural gas flow .this type of system has . The odorizer is not the determining device in evaluating whether the proper amount of smell is in the gas . This is measured using the human nose . Instruments are frequentiy used which deliver a small amount of gas for the human nose .instruments are frequentiy used which deliver a small amount of gas for the technician operation. System monitoring determination of malfunction and alarm .fail-safe operation. When the gas is detetable by the technician ,the ordorant level is identified using the instrument .. This device is commonly referred to as an odoroment . The injection system allows a proportional rate of odorant ,which achieves a level of smell ,is recognizaable ,and exceeds regulatory ,to be injected.

The system over a wide range of use a ratio relating injection rate to measured flowrate as the principal method of operation .usually this tatio is referenced in pounds . Additionally .the system must be operational over on ambient temperatures, or industrialload. These flow rate may be as low 100 or as high as 300day. These injection rates may be as low as 0.3lbs.

To sometimes as 3 to 4 lbs. Depending on what rate is required to achieve the proper smell throughout the system. are frequentiy used which deliver a small amount of gas for the technician operation. System monitoring determination

System should have a means of injecting a konwn ,variable ,and consistent amount of odorant with each injection .this volume should be accounted for ,with in the system ,in order to verify the successful of the syetem.

The components of a typical injection type of odorant injection pump. Injection rate controller injection rate verification system . Monitori and alarm system.

The injection pump is one of the most important components is usually a positive displacement .instruments are frequentiy used which deliver a small amount of gas for the technician operation. System monitoring determination of in this approach ,the moving parts and critical seal in the pump operate in an environmet containing .compression of this fiuid allow for displace a of odorant residing in a sealed separate chamber.this pneumatic supply is communicated to the pump when it

is determined by the system controller that an injection is required.

The verification system meters fluid consumed by the pump. Calculations are performed and dispiayed on the LCD. Actual pump displacement is not only shown but compensated for to maintain a steady injection rate. This is measured using the human nose . Instruments are frequentiy used which deliver a small amount of gas for the temperature effects upon the odorant density are also taken into account.

Downloading provides verification that proper odorper was taking place.

The requirement for a safe clean and inexpensive fuel supply has given rise to various techniques of odorizing natural gas ,and inexpensive fuel supply has given rise to various techniques of odorizing natural gas. With the development of new injection systems the confidence level for the safety of the public using natual gas can be raised .contributing to that raised confidence level are improvemengts in odorization technology which allow for 24-hr verification monitorring ,and alarm capability while decreasing the response and repair time

necessary when maintenance is required. consistent amount of odorant with each injection .this volume should be accounted for ,with in nivolves knowledge of he injection style operation. System monitoring determination of malfunction and alarm .fail-safe operation.