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Injection Odorizer

Injection Odorizer

Introduction

THECO Injection Odorizer are pneumatically powered, solenoid driven or positive displacement specifically designed for gas transmission industry to inject smell of a skunk into the gas without getting any odor on yourself or stinking up the area.

 Fig.1: Injection Odorizer

Principles of Operation

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.

Fig.2:Injection  Odorizer Flow Diagram 

Fig.3:Injection  OdorizerDesignation

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.

TYPE DESIGNATION

THIO۲۵۰۰-B

FamilyFlow Rate(SCMH) Rating(Class)

 

Discharge pressure Pi:up to 300Psig
Rating ۳۰۰#~۱۵۰#
Main Gas flow rate up to 300,000 SCMH
Operating temperature -۲۰ °c    to   + ۶۰ °c
Acceptable gases Natural Gas
Odorant Spec. MERCAPTAN(Sulfide Comp.)
Input Signal ۴~۲۰ mA
Design code ASME Sec VIIII-Div.1
Pump Type Solenoid  R  PneumaticR     Positive DisplacementR
Odorant Concentration ۱۰~۲۰ mg/Scm
Pump Output Flow Range Up to 5 Lit/Hr per Pump
Pump Stroke Per Minute ۵~۱۰۰

 TECHNICAL SPECIFICATIONS

Injection  OdorizerTroubleshooting

Low pump out put

Low pump output can be caused by many things. The some of the more common ones are:

  • Very low stroke setting

Check position of stroke length knob by rotating until diaphragm stopes moving with the pump operating. the diaphragm should not stop reciprocating until the knob points to zero, reset knob by grasping the knob and pulling it towards you.pry the yellow cap off of the knob. place the knob on a flat surface. using needle nose pliers, squeeze the inner section together while lifting outer section up.

Fig.4:Pump Knob

Push the inner section back  onto the “d” shaped stroke shaft with the pump running , zero the pump by turning the inner section of the knob counter clockwise. position the outer section of the knob so that the pointer aligns with zero on the name plate. push down on the outer section of the knob .replace the yellow cap over the outer section of the knob, aligning the tabs on the cap with the slots on the knob. 

  • Trapped air in pump head

may be caused by leaks in the suction line, where the suction line joins the suction fitting, or at the seal ring between suction fitting and pump head. it may also be caused by air or gases coming out of solution. trapped air or bubbles in the discharge line have no effect on the pump`s operation. they may be ignored.

To remove trapped air from the pump head , operate the pump with stroke frequency knob and stroke length knob set at 100.

  • Air leak through valve seal rings

usually cause by worn or damaged seal rings or loose fittings.

tighten fittings by hand until they are very snug. if there is no improvement, replace both seal rings in pump head.

  • Ruptured pumping diaphragm

if rupture is severe and pump is injecting into pressure, solution leak will be abvious through the diameter hole at the bottom of the spacer directly behind the pump head.

  • Clogged liquid end, or injection point connection

will cause low pump output. purge liquid end, disassemble liquid end, clean individual parts with water and detergent.

Excessive pump out put

Syphoning

If your pump has a liquid end other than a high viscosity le, its injection check valve assembly has a chemically resistance  anti-syphone spring . disassemble  the injection check valve and check to be sure this spring is in place and undamaged..replace if necessary.

Incorrect knob settings

Check stroke length knob by rotating to zero position. the diaphragm  should stop reciprocating .if it dose not , reset knob and continue rotation until motion stops. reset knob by grasping the knob and pulling it towards you.pry the yellow cap off of the knob.

place  the knob on the flat surface needle nose pliers, squeeze the inner section together while lifting outer section up. push the inner section back  onto the “d” shaped stroke shaft with the pump running , zero the pump by turning the inner section of the knob counter clockwise. position the outer section of the knob so that the pointer aligns with zero on the name plate. push down on the outer section of the knob .replace the yellow cap over the outer section of the knob, aligning the tabs on the cap with the slots on the knob. 

Odorization Effectiveness

 

The application of chromatographic equipment for analysis of minute concentrations of odoriferous sulfur-bearing compounds in combustible ducted at the American Institute of Gas Technology (I.G.T). It is the only method that allows individual chemical identification by instruments.

        Fig.5:Odorization Effectiveness

TOOS HENGAM ENGINEERING COMPANY

Professional in systems analysis

P.O.Box : 91895-139

Tel/Fax:(+98 51) 36232501-4

Web :www.theco.co.ir

E-mail :info@theco.co.ir

TH.E.CO
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