The cleaning agent and corrosion inhibitor should be selected according to the material of heat exchanger and the chemical cleaning agent should be determined. Paul watkinson, engineering conferences international, kloster irsee, germany, june 5 10, 2005. Dear friends and colleagues of the heat transfer fouling community. In contrast, efficient mechanical and chemical fouling mitigation and cleaning techniques have found their way into regular plant operation through a mainly.
And the heat exchanger plate is the core component of the heat exchanger, if the cleaning methods are not scientific, it will directly cause various economic losses, and even malignant accidents may be happened. For that, a followup on the fouling resistance in heat. Optimization of operating conditions for mitigating. Heat exchanger fouling and cleaning conference 2017. Heat exchanger fouling and cleaning challenges and opportunities. A mechanical device for continous online mitigation 166 of tubular heat exchanger fouling 3. Fouling is the accumulation of unwanted material on solid surfaces to the detriment of function. The main objective of this work is to develop a semiempirical model for heat exchanger fouling the available experimental data are analyzed and then used to establish the proposed model.
Spirelf, online mechanical cleaning omc and turbulence promonotion devices 158 turbotal, turbotal. Heat exchanger is equipment used to transfer heat from one fluid to another. The fouling materials can consist of either living organisms or a nonliving substance inorganic andor organic. In tube self cleaning heat exchanger ballbrush type cleaning systems. Fouling mitigation using helixchanger heat exchangers. The decreasing price of oil and the increasing cost of energy force engineers to continuously face the challenges of designing highly effective equipment, developing innovative enhancements for heat transfer, and reducing equipment size. The proceedings cover various aspects of heat exchanger fouling along with updated stateofart fouling mitigation and cleaning strategies. It reduces the heat recovery and restricts the fluid flow in a heat exchanger by. Heat exchanger fouling problem posted in refining, hydrocarbons, oil, and gas.
Heat exchanger fouling and cleaning conference series. However these are still some probelms in cost, shut down for cleaning and environmental matters. The corrosion products can foul the surface provided it is not dissolved in the solu tion after formation. Pdf fouling and fouling mitigation on heat exchanger. However, the changes in the operating conditions requires to reducing the propensity of fouling involved, in most cases, a reduction in the amount of heat. In fact, fouling has been recognised for a in fact, fouling has been recognised for a long time, and research on heat exchanger fo uling was. Fouling resistances imply a higher heat transfer area needed in the design to guarantee that the heat exchanger will attain the needed heat load according to the process specifications during the entire period between cleaning shutdowns. Expresstm, novel heat exchanger analysis software for heat exchanger fouling in the preheat train of a crude oil distillation unit.
Furthermore, the general and scientific fundamentals of heat transfer are explained. Written by experts from germany, uk and the usa, this book is a reliable adviser for engineers, managers, technicians and students who want to. In most industrial fields, lots of trial for fouling removal has been focused to chemical methods and some of trials had good results. After 7 successful conferences on heat exchanger fouling and cleaning organised through engineering conference international eci in california 1995, italy 1997, canada 1999, switzerland 2001, new mexico 2003, germany 2005 and portugal 2007, we have decided to take on the administration of the. Generally speaking, heat exchangers are liable to fouling where the unwanted deposition of microorganisms severely deteriorates heat transfer performance. Such as, pres ence of sulfur in fuel can cause corrosion in.
If the fouling resistance presents an asymptotic page 5 of 35 acs paragon plus environment. Fundamentals and applications 2003 santa fe, new mexico, usa 18 22 may 2003. Fouling during the use of seawater as coolant the development of a user guide, s. Over 90% of all heat exchangers suffer from fouling. The problems that restrict the efficient operation of equipment are described and the costs. Heat exchanger fouling problem refining, hydrocarbons. While the general fouling mitigation strategy will solve any refinery fouling problem, it makes sense to keep in mind the most common causes. Oily wastewater is also generated during heat exchanger cleaning. On the other side, a very frequent cleaning of heat exchanger can be much.
The same can be done for the heat load, giving the heat exchanger efficiency, as defined in equation 2. It was developed over a period of more than five years in close collaboration with the oil industry fouling working party, a team of oil refiners, heat transfer equipment manufacturers and chemical suppliers. This enables maintenance period to be predicted in order to eliminate the menace of fouling which increases the thermal resistance of heat exchangers and consequently lowers the overall heat transfer. Chunangad2 and venkateswaran pushpanathan3 1 abb lummus heat transfer, 1515 broad street, bloomfield, nj 07003, usa. Heat exchanger fouling and estimation of remaining useful life tutpol ardsomang1, j. Kazi and others published fouling and fouling mitigation on heat exchanger surfaces find, read and cite all the research you need on researchgate. Industrial perspective on fouling research fouling mitigation.
The conference is intended to facilitate innovative thinking and to explore theoretical and practical approaches to address the challenges associated with heat exchanger fouling. Industrial heat exchanger operation and maintenanceto minimize fouling and corrosion 3 easy steps to complete the course. Petrosync heat exchanger fouling mitigation technology. This model accounts for the effects of flow conditions on fouling. Proven dramatic results show it can help companies save thousands of hours of cleaning and millions of dollars in costs every year.
Heat exchangers play a crucial role in most chemical, food processing and power generating processes. Of such factors some may be related to the feed properties such as its chemical nature, density, viscosity, diffusivity, pour and cloud. Optimization of scheduling of cleaning in heat exchanger. If heat exchanger tubes surfaces resisted fouling or could be cleaned during operation, significant reductions in green gas emissions, water and cost could be achieved. Physical water treatment for the mitigation of mineral fouling in coolingtower water applications, young i. Cost effective fouling control in cooling water intake systems with environmental and operational benefits. Influence of fouling on heat exchanger effectiveness in a.
Heat exchanger fouling and cleaning the conference. Particulate fouling effect on heat exchanger performance. However, when doing an extrapolation at industrial scale, errors become significant because of the nonlinearities of the thermophysical properties and the transfer coefficients along the heat exchanger. Fouling is a resistance to energy transfer between fluids in pro cess equipment 1. This conference provides a collaborative forum for addressing the tremendous challenges engineers face due to the fouling of heat exchangers. Fouling and fouling mitigation on heat exchanger surfaces 511 surface reacts with the fluid and become corro ded 15.
Now, 2 months after we cleaned it up, we are noticing. Increasing the heat transfer area of the heat exchanger. Fouling and fouling mitigation on heat exchanger surfaces. Volume 32, 2011 issue 34 submit an article journal homepage. The present eproceedings as well as those from the previous conference in 2003 can be obtained free of charge from the following homepage of engineering conferences international symposium series. Fouling mitigation using helixchanger heat exchangers bashir i. On the other side, a very frequent cleaning of heat exchanger can be much costly in maintenance and lost of production. Costs due to overdesign, additional fuel consumption and maintenance, loss of production, etc. Visit for state specific information including ohios required.
Fouling mitigation and cleaning chemical, mechanical and physical techniques. Technologies for biofouling control and monitoring in desalination. Deposition process fouling in a waterintube heat exchanger. Aa, bg, c, d, hp, hr, lc, and tv series heat exchangers. Warranty and service contact information is also included.
The calculation of the calenderandtube heat exchanger is based on empirical models validated on the laboratory scale. Study of the fouling deposit in the heat exchangers of. Heat exchanger fouling and cleaning challenges and. Extensive technical literature is available on heat exchanger design, operation and maintenance, but it is widely scattered throughout the industrial bulletins, industrial design codes and standard, technical journals, etc. In this way, an accurate optimization technique of cleaning.
Heat exchanger fouling and cleaning conference 2017 1. The course will provide details on the maintenance aspects of several heat exchanger types in relation to process and mechanical design. In industry, periodic heat exchanger cleaning is the most effective and widely used mitigation technique. Fouling of heat exchangers in processing industries is a chronic operating problem. For example, fouling in crude oil exchangers affected by the following variables. Heat exchanger fouling and cleaning vii, july 1 6, 2007, tomar, portugal also, an output information template is filled up with the results of the execution to be retrieved. Heat exchanger fouling mitigation and cleaning technologies. Fouling and fouling mitigation on heat exchanger surfaces 509 fig. Uop and ucl are compared, using equation 1, to estimate the real time fouling factor for each heat exchanger. Cleaning schedule optimization of heat exchanger networks.
Antifouling he new technology can reduce heat exchanger. Due to the custom nature of all xchanger heat exchangers, this manual discusses the characteristics and procedures that are common to all exchangers. Since 90% of refinery fouling is caused by only six basic causes, most fouling causes can be quickly identified by using tests or indicators for the diagnosis and investigation steps. This handbook presents the most important technologies concerning the reduction of fouling in heat exchangers and the appropriate technologies of removal and cleaning. Fouling is usually distinguished from other surfacegrowth phenomena in that it occurs on a surface of a component, system, or plant performing a defined and useful function and that. The initiation period and the roughness delay time for particulate fouling are very small 4. This handbook presents, now in the 2nd completely worked over and enlarged edition, the most important technologies concerning the reduction of fouling in heat exchangers beginning with constructional disposition, prevention measures and the appropriate technologies of removal and cleaning. The factors that govern fouling in heat exchangers are many and varied.
Plate heat exchanger cleaning service provider hfm. Online cleaning technique for mitigation of biofouling in heat. Have you ever considered to apply ultrasonic scale preventer to remove and prevent fouling in heat exchanger. Heat exchanger fouling and estimation of remaining useful life. Keeping heat exchanger tubes continuously clean and providing optimal heat exchange maintains process ef. This unique and comprehensive text considers all aspects of heat exchanger fouling from the basic science of how surfaces become fouled to very practical ways of mitigating the problem and from mathematical modelling of different fouling mechanisms to practical methods of heat exchanger cleaning. Chemical fouling cleaning chemical fouling cleaning is to add acids or alkalis into the fluids to minish the adhesive force between fouling and surface so as to remove the fouling.
352 1171 537 1015 31 1067 264 229 1109 39 1598 999 1539 805 521 506 69 652 814 882 600 1466 1067 1090 413 570 148 269 109 676 1345 998 838 146 858 223 825 1341 710 856 817 1397 1393 1361 986