VISTA TECH

 Natural gas leaks from the transport and distribution networks must be immediately detected in order to avoid possible accidents caused by the fact that gas is flammable, explosive and toxic.Natural gas is odorless; therefore, it is necessary to add an odorous substance to detect its presence in the air.the odor must be strong enough to be detected before reaching the lower explosive limit (lowest concentration in percentage og ga in air capable of producing a flash of fire in presence of a source of ignition)-5% for natural gas. A specific quantity f odorizing agent (Ethyl Mercaptan EM, Tetrahydrothiophene THT, Tertiary Butyl Mercaptan TBM) is injected in the natural gas pipeline by means of the odorizing system.

INJECTION ODORIZER:

The flow diagram below showing the principle of operation .the measuring element (Gas Meter) used to determine the flow of gas in the main pipeline. As the control box of odorizer, accumulate all signals from gas meteres, it will send a signal to the pump (adjustable) for odorant discharge. The INJECTION ODORIZER is a patented device that injects odorant into the pipe line in the liquid phase. It will inject ant type of odorant for almost any range of gas flow and can be specially designed for pressure as high as 1200 to 1500 PSIG without any difficulty.

BY-PASS ODORIZER:

The By-Pass odorization of a gas flow (Evaporation Absorption) involve establishing a small side flow of gas, saturating the small stream with odorant vapor and returning it to the main stream. Consideration must be given to the flow control of the small stream, the temperature of the saturating vessel, and the type of odorant used.

Typical Application This type of Odorizer used for Distributing Systems such as Pressure reducing gas stations with maximum capacity of   10,000 SCMH

The evaporation-absorption (By-pass) Odorizer consists of a tank equipped with one or more wicks located on a   by-pass gas line. The control for bypassing the gas through the tank is obtained by manually throttling a valve located on the main line.