Unlock your applications with a wide range of controlgear. In semiconductor testing, contactor can also refer to the specialized socket that connects the device under test. Tesys iec contactors and overload relays making highfault shortcircuit current ratings simple the latest development in the tesys family of iec contactors and overload relays is component highfault shortcircuit current ratings sccrs. It is the most common and economical means of water removal from these streams. Pump triethylene glycol teg solution into the top of the tower allowing the teg solution to flow downward across bubble trays. Sales contactor product line contactor selector guide pdf contactor datasheets. Contactor an electrical device used for frequent closing and opening up to 1,500 operations per hour of power circuits carrying. The lean teg water content is generally in the range of 0. The issue is that losses from the bulk contactor are particularly.
Ratings of a contactor are given according to the pole of the contactor. Dry teg contacts the moist natural gas and absorbs the water from it in a contactor tower. Construction contract writer creates contracts that comply with law in your state. However, like any other device, they are not infallible. Teg contactor for gas dehydration fenix offers complete process. This figure indicates that as the contactor temperature increases, the. In a contactor, a countercurrent flow of wet ng and teg is arranged. Schaltbau has been manufacturing dc contactors for over 80 years. The moisture in teg is further soaked by recycling a small quantity of dry gas generated in the first column.
Contactor relays are often used in control and regulating functions. One other option to the tray teg contactor is the use of structured. If the gas contains free liquid impurities it can be cleaned in a pretreatment ko drum either integrated within the column or an. An optimized teg contactor design, when determined in the early project stage, will bring significant weight, space, and cost savings. This figure indicates that as the contactor temperature increases, the teg vaporization loss from the regenerator top increases. Provisions are also provided for up to 2 no and 2 nc auxiliary contacts. The base of the lighting contactor see figure 1 has provisions to accept power poles at positions 1 to 6. Absorption dehydration unit consists of glycol contactor, in form of tray column or packed column. Contactor relays contactor relays contactor relays are often used in control and regulating functions.
Four glycols have been successfully used to dry natural gas. It also depends on factors like fault withstand current, coil voltage and so on. Contactor control unit solenoid fitted with varistor 3rt10 3x. Sccrs identify the level of fault current that a component or assembly can safely withstand. Dehydration of natural gas using triethylene glycol. Pdf on mar 1, 2008, mark moore and others published. The teg vaporization losses for three feed gas temperatures to contactor for stripping gas rate of 10 std m 3 m 3 teg 1.
Another heat exchanger is also added to cool the teg stream to the contactor stream, but for the purpose of this research work a. The industrial absorption dehydration process proceeds in a glycol contactor a tray column or packet bed. High losses from teg contactor industrial professionals. Teg enriched in water flows out the bottom part of contactor, while dry natural gas flows out to the upper part of contactor. Remove all packing material from the base and all the kits. The enclosure is a frame housing the contacts and the electromagnet. Abb control secrl 2 20010619 the abb range of a the abb range of a contactorscontactors a 9, a 12, a 16 a 26, a 30, a 40 a 50, a 63, a 75 a 95, a 110 a145.
During the process, fresh lean teg enters to the absorption column at the top side. Abb control secrl 2 20010619 the abb range of a the abb range of a contactorscontactors a 9, a 12, a 16 a 26, a 30, a 40 a 50, a 63, a 75 a 95, a 110 a145, a185 a210, a260, a300 af400, af460 af580, af750. Several natural gas dehydration methods and range of application. They are used in large quantities for the indirect control of motors, valves, clutches and heating equipment. Mokhatab, gas processing consultant, halifax, nova scotia, canada. The basics of contactors commercial electric products. Deg, triethylene glycol teg and tetraethylene glycol. Pump is installed to raise the pressure of the teg stream before it enters the contactor streams. In the contactor, wet natural gas and teg flow countercurrently. Mini contactor terminal style contact minioverload use upper limit combination in part number nonreversing 6 6a a ac coil 24 24v 10 1 no 12 up to 12a m mini 0.
Optimizing effective absorption during wet natural gas. Glycol dehydration is a liquid desiccant system for the removal of water from natural gas and natural gas liquids ngl. With no stripping gas to the reboiler, the expected lean water content of teg is about 1. Dehydration with triethylene glycol teg is effective and has been successfully employed in both onshore and offshore facilities. A failure of the seals between the glycol contactor and the vaporliquid separator can result in. Estimating teg vaporization losses in teg dehydration unit. Stronger barrier strength is improved with the thermoplastic mold. A contactor is an electricallycontrolled switch used for switching an electrical power circuit. Factors of contactors contact design electrical technology. The teg process the water saturated gas feed enters the gasglycol contactor column in the bottom section via a suitable vapour distributor. Rated operational current ie at rating of induction motors at 50 hz order no. If the gas contains free liquid impurities it can be cleaned in a pretreatment ko drum either integrated within the column or an external vessel using a good quality mist eliminator. During the contact, the teg is enriched by water and flows out of the bottom part of the contactor. Dec 28, 2018 a contactor connects or disconnects an electrical load.
In process industries, a contactor is a vessel where two streams interact, for example, air and liquid. Enclosures are made of insulating materials such as bakelite, nylon 6, and. Molecular sieve technology is widely used for the simultaneous removal of water and mercaptans from both gas and liquid feed streams. Herold, contributing writer, amsterdam, the netherlands. Teg, because some quantities of teg has been lost during the dehydration. Start by answering a series of interview questions. Contactor relays 52 contactors dil, overload relays z 58 contactors dil 514 overload relays z 520 zeb electronic overload relay 523 zev electronic motorprotective system 526 thermistor overload relay for machine protection emt6 533 cmd contactor monitoring device 536. Teg triethylene glycol is the primary solvent used in gas processing industry to dehydrate gases. No legal experience needed to draft residential and commercial prime and subcontracts, costplus contracts, green leed contracts, home improvement contracts, pool contracts, solar installation contracts and construction management contracts. The field is black oil and produces around 40kbpd and 220 mmscfd gas. The electromagnet or coil provides the driving force to close the contacts. In most cases, the contactor does not simply wear out from normal use. Contactor k value activity coef k value a, lkv teg regenerator heat balance design current dehydrated gas, mmscfd water content, lbmmscfd rich teg in f water stripping gas in scfgal scfm temp lean teg out, gpm effluent gas out water out lbhr gas reflux in out water heat, glycol heat gas heat reflux desup, ovhd mw gas cp teg cp gas cp.
When specifying telemecanique iec contactors and starters refer to the following square d documents. The teg contactor, after absorbing moisture is regenerated using two columns the stripper and the regenerator. When the start button is pressed in a magnetic starter, an electromagnet gets energized and the contactor gets engaged. For dehydration of natural gas by triethylene glycol teg process to a lower.
For more than 30 years repco has built a solid reputation for quality. Optimal design and operation of molecular sieve gas. The contactor can be inspected easily by removing the arc cover. C contactor a threephase starter b singlephase starter type 25 nonreversing contactors and starters c306 27 nonreversing starters xtob 30 nonreversing starters c440 eol 65 reversing contactors c 2 5 d n a 2 1 5 a a 1 6 1 8 4 contactor frame size a compact, singlepole b compact, twopole c compact, singlepole w. Lp1d series dc operated ac contactor is suitable for use in the circuits up to rated voltage 660v ac 50hz or 60hz,and in rated current 995a in ac3380v load circuits. For a non ideal mixture of water, teg and methane, one can write the. Oct 14, 2018 absorption dehydration unit consists of glycol contactor, in form of tray column or packed column. Contactor article about contactor by the free dictionary. Introduction water vapor is the most common undesirable impurity in gas streams. A contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings. Teg contactor manufacturers in pune, teg contactor. In the stripper, moisture is removed from teg by heating generally employing a reboiler. A failure of the seals between the glycol contactor and the vaporliquid separator can result in losses of teg, which would be hard to trouble shoot. The gas will pass through bubble trays contacting the teg solution which will remove the water vapor.
Jul 17, 2017 switch the volt ohmmeter on and to the ohms position on the front selector switch. Continue moving natural gas into the contactor tower. The basics of contactors contactors are useful in commercial and industrial applications, particularly for controlling large lighting loads and motors. In addition to the simplicity which they offer in project engineering, panel building, commissioning and maintenance, the high. According to their rating, contactors are classified into the following. Place the red lead to the l1 and the black lead to t1. I dont think having an integral vaporliquid separator below the contactor is the most reliable system. This includes power contacts, auxiliary contacts, and contact springs. Builtin surge absorber the model with builtin surge absorber for coils is obtainable as an option. Introduction repco is the industryleading source for replacement electrical contacts for industrial motor controls. High losses from teg contactor posted in industrial professionals. Optimal design and operation of molecular sieve gas dehydration unitspart 1. Construction contract writer craftsman book company.
Factors of contactors contact design the following factors consider while designing the contactors contacts relay, magnetic and electrical contactor trending up tp 93% off launching official electrical technology store shop now. For remote controlling circuit making, breaking and frequent starting ac motors. Several natural gas dehydration methods and range of. Insert the closed eyelet connector, and push up the screw holder. Teg contactor manufacturers in pune, teg contactor suppliers. The tower contains a structured packing bed to maximize the mixing between the gas and teg and to increase the contact time between the two substances. The dline contactors and overload relays are the largest selling contactor. Numerical simulation of an industrial absorber for dehydration of. The contacts are the currentcarrying part of the contactor.
Contactors tesys d 184 tesys d reversing 186 tesys f 185 tesys k 1824 tesys d and f accessories 188 tesys k. Abb ac contactor rated operational auxiliary contacts weight footprint order code current fitted kg h w d 1st stack ac3 ac1 400 v 40 c state coil voltage a a kw see table below 1 0. For contactor mcx 01 mcx 02 mcx 03 mcx 04 mcx 11 mcx 12 mcx 11 12 mcx 21 22 mcx 31 32 mcx 33 34 mcx 41 42 mcx 43 44 mcx 45 46 cat. Contactor must be mounted in the vertical position on a. The usual practice is to introduce, at the top of the glycol contactor tower, a solution of regenerated glycol with a concentration ranging from 97 to 99 %, and to remove the solution from the base of the contactor tower at a glycol concentration of 80 to 90 %8. Glycols typically seen in industry include triethylene glycol teg, diethylene glycol deg, ethylene glycol meg, and tetraethylene glycol treg. Our contactors can handle 50a250a and are rated for v usage. The contacts are the current carrying part of the contactor. Lean regenerated glycol is introduced into the top of the column via a suitable liquid distributor to ensure a good flow of teg across the entire column area.
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