A louder hum will occur if the shading coil does not apply to af is broken because the magnet will cause the contactor to chatter. Introduction water vapor is the most common undesirable impurity in gas streams. Water must be removed from carbon dioxide co 2 after capture because of risk for corrosion and hydrate formation. Factory assembled 4 and 5 pole contactors utilize the basic 3 pole device with a single or doublepole kit installed. Crosstie contactor crosstie contactor aka xtie contactor, bustie contactor is a continuous duty relay meaning it can be turned on indefinitely. The fractionation train consists of 4 distillation columns. Glycols typically seen in industry include triethylene glycol teg, diethylene glycol deg, ethylene glycol meg, and tetraethylene glycol treg. 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. For requirements according to iec 600771 and iec 600772.
Dehydration with triethylene glycol teg is effective and has been successfully employed in both onshore and offshore facilities. The field is black oil and produces around 40kbpd and 220 mmscfd gas. Glycol dehydration process an overview sciencedirect. Methane, volatile organic compounds vocs, hazardous air pollutants haps from reboiler vent methane from pneumatic pump and valves. The issue is that losses from the bulk contactor are. Ratings of a contactor are given according to the pole of the contactor. Bubble cap tray horizontal plate holding bubble caps and downcomers in the contactor. Schaltbau has been manufacturing dc contactors for over 80 years. Our contactors can handle 50a250a and are rated for v usage.
In addition to the simplicity which they offer in project engineering, panel building, commissioning and maintenance, the high. Optimizing effective absorption during wet natural gas. Make the most of your energy sm 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. Product data sheet 3rt10566af36 allied electronics. 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. Engineering design guidelines gas dehydration rev01web. Triethylene glycol teg is used to absorb water from the gas, reduce the water content from 2. Water content of high pressure natural gas data, prediction and experience from field classification. The most common and efficient dehydration system is based on the countercurrent absorption by teg. A new contactor range from abb new generation abb contactors. The slots cause the gas to break up into small bubbles for intimate contact with the glycol. Department of process, energy and environmental technology. Kjersti omdahl christensen, torbjorn vegard lokken, even solbraa, cecilie fjeld nygaard, anita bersas.
Lean teg temperature enter to contactor industrial. The gas industry has experienced encouraging worldwide growth in the last few decades and is poised to play an even more important role in the worlds energy future, in tandem with the growth of interest in renewable and alternative energy resources. Factors of contactors contact design electrical technology. Numerical simulation of an industrial absorber for dehydration of.
Deg, triethylene glycol teg and tetraethylene glycol. According to their rating, contactors are classified into the following. Lc1d25bd tesys d contactor 3p3 no ac3 contactor device short name lc1d contactor application motor control resistive load utilisation category ac1 ac3 poles description 3p power pole contact composition 3 no ue rated operational voltage contactor fixing, 440v cabling 3 220v 380v 660v. 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. Bubble caps slotted metal caps attached over elevated nozzles risers on the bubble cap trays. Design glycol units for maximum efficiency bryan research. Manage teg liquid and corrosion in sales gas pipelines. Estimating teg vaporization losses in teg dehydration unit. In the stripper, moisture is removed from teg by heating generally employing a reboiler.
Glycol dehydration is a liquid desiccant system for the removal of water from natural gas and natural gas liquids ngl. In process design of the teg dehydration unit, the upstream unit operation must be considered, as the teg inlet temperature and water saturation will significantly impact the unit performance. Another product is the sulzer viec vessel internal electrostatic. The basics of contactors commercial electric products. Abb control secrl 47 20010619 quality and environment. The teg process the water saturated gas feed enters the gasglycol contactor column in the bottom section via a suitable vapour distributor. This is a dacron316ss composite mesh pad designed specifically for teg dehydration service. Hum can also occur if the pole surfaces are deformed.
Klm technology group practical engineering guidelines for processing plant solutions gas dehydration engineering design guidelines page 3 of 70 rev. This relay is normally used in a dual bus configuration to tie both busses together in the case of an alternator failure. Model c contactor a threephase starter b singlephase starter type. Teg contactor manufacturers in pune, teg contactor suppliers. The basics of contactors contactors are useful in commercial and industrial applications, particularly for controlling large lighting loads and motors. Effective dehydration of sales gas is the primary concern before its transmission over a long distant pipeline. The inlet temperature of teg is generally kept at 25oc to 40oc as higher temperature lowers the absorption capacity of the teg.
Hi i would like to ask,whether the temperature of lean teg enter to contactor play a significant role to the moisture outlet for dehydration process. In most cases, the contactor does not simply wear out from normal use. Manual guidelines for contactor inspection and maintenance. Automation technology industrial controls switching devices contactors and contactor assemblies power contactors for switching motors sirius 3rt12 and 3tf6, vacuum. Radfrac is used to model contactor, stripper and regenerator. However, like any other device, they are not infallible. Automation technology industrial controls switching devices contactors and contactor assemblies power contactors for switching motors sirius. The moisture in teg is further soaked by recycling a small quantity of dry gas generated in the first column. The larger polymers teg and treg have the best properties for dehydration.
Teg contactor for gas dehydration fenix offers complete process. This relay will become warm during normal operations. Request pdf simple methodology for sizing of absorbers for teg triethylene glycol gas dehydration systems natural gas is an important source of primary. Search wegcontactoresyrelesdesobrecarga50036562catalogoespanol.
In the regenerator the water vapour is usually just vented to the. Most use triethylene glycol teg glycol dehydrators create emissions. 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. Four glycols have been successfully used to dry natural gas. Yes check the control circuit for operations or check the wiring to the contactor auxiliary contacts. Contactor fails to hold no no check the control circuit and the coil for an open circuit. If so the complete contactor needs to be exchanged. Contactor relays contactor relays contactor relays are often used in control and regulating functions. Sccrs identify the level of fault current that a component or assembly can safely withstand. High losses from teg contactor posted in industrial professionals. The gas industry has experienced encouraging worldwide growth in the last few decades and is poised to play an even more important role in the worlds energy future, in tandem with the growth of interest in renewable and alternative energy.
Product data sheet 3rt10566af36 contactor, 90kw400vac3, ac40. Optimizing effective absorption during wet natural gas dehydration by tri ethylene glycol khan, mohd atiqueuzzaman. 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. It also depends on factors like fault withstand current, coil voltage and so on. Operating mechanism screw terminal general technical data.
Hiper twinline separator, can replace conventional teg contactors and associated separators to meet pipeline dew point specifications. They are used in large quantities for the indirect control of motors, valves, clutches and heating equipment. Table iii shows the henrys law constants for eg, teg and methanol for h. Models of an absorber for dehydration of natural gas using triethylene glycol are presented. If a larger prime mover or additional generator capacity for the increased. Then what is the suggestion range of lean teg temperature above the gas temperature should be 1015 degree f above gas. The glycol, usually teg, enters at the top of the contactor and absorbs water. Ferrell, in acid and sour gas treating processes, s. Most use triethylene glycol teg glycol dehydrators create emissions methane, vocs, haps from reboiler vent methane from pneumatic controllers source. Glycols typically seen in industry include triethylene glycol teg, diethylene glycol deg, ethylene glycol meg, and tetraethylene glycol. Pdf optimization of energy consumption during natural gas. The contactor is simulated with four theoretical stages and the sizing is carried out using aspenplus v12.
Factors of contactors contact design the following factors consider while designing the contactors contacts relay, magnetic and electrical contactor. Automation technology industrial controls switching devices contactors and contactor assemblies power contactors for switching motors sirius 3rt contactors, 3pole up to 250 kw. If structured packing is used here it should be designed for a maximum fs of 2. Type s lighting contactor to make a 4 or 5 pole device. This figure indicates that as the contactor temperature increases, the teg vaporization loss from the regenerator top increases. Lc1d25bd tesys d contactor 3p3 no ac3 3pole, up to 250 kw. Wegcontactoresyrelesdesobrecarga50036562catalogoespanol. No no no yes does the holding or sealing circuit close. Teg contactor manufacturers in pune, teg contactor.
The teg vaporization losses for three feed gas temperatures to contactor for stripping gas rate of 10 std m 3 m 3 teg 1. It allows significant reductions in weight, footprint and cost. Contactors, overloads and manual motor starters minicontactors and overloads up to 20 amps or 7. Lean teg temperature enter to contactor posted in industrial professionals. For these and more of our motor control products, such as push buttons, soft. Yes start is the contactor coil energizing and moving the contact assembly. High losses from teg contactor industrial professionals. Pdf the aim of this work is to design an efficient natural gas dehydration plant using teg as desiccant in both terms i. Simple methodology for sizing of absorbers for teg triethylene. Search wegwegcontactorsandoverloadrelays50052830brochureenglish.
1210 1502 424 718 483 16 125 857 161 440 454 530 951 1527 453 75 1438 1144 245 931 943 623 138 1208 506 792 935 1202 687 654 1061 1161 1306 796 545 628 348 622 1454 656 1310 475 1142 1165 657