The word \u201cheat\u201d may be defined as the amount of energy that is transferred from one system to another, typically via a temperature differential or \u201cgradient,\u201d and the amount of heat something possesses may be stated in terms of British Thermal Units (BTU), Joules (J), calories (cal), etc. (as compared to reference temperature or datum state).\u00a0 Measured over time, heat becomes energy that is used to accomplish tasks, and that energy may be measured in BTU\/hr, J\/sec, etc.\u00a0 There is a definite cost to energy usage, as evidenced by any plant\u2019s energy utility bill.\u00a0 As such, there is a high emphasis nowadays in energy re-use (\u201cheat integration\u201d) via applying \u201cwaste\u201d heat from one process to another process needing energy.\u00a0 While many such heat\/energy integration techniques may be easily accomplished, there may, under certain circumstances, be limitations to the extent such energy re-utilization efforts may be accomplished.<\/p>\n
Many municipal wastewater treatment plants (WWTP\u2019s) are utilizing anaerobic digestion systems and these processes may produce digester gas or \u201cbiogas\u201d (chiefly methane and carbon dioxide with other trace chemical constituents and\/or contaminants).\u00a0 The biogas produced may be used by a variety of means, such as for maintaining heated conditions in the digester units and\/or in gas engines that drive generators to produce electricity in a combined heat and power cycle (CHP).\u00a0 These CHP processes generally produce two \u201cwaste\u201d heat streams by which heat may be extracted and re-utilized (i.e. \u201cintegrated\u201d) in another process.\u00a0 These two streams are the exhaust (or \u201cstack\u201d) gas from the biogas combustion process itself and a hot water stream (typically a water\/glycol mixture) or steam produced from using cooling water to maintain reasonable CHP engine temperatures.<\/p>\n
The extent to which these particular waste heat sources can be utilized depends on many factors, including the costs associated with purchasing, installing, and operating the heat recovery equipment.\u00a0 With respect to utilizing a waste heat source in a sludge thermal drying operation, some of these factors may include:<\/p>\n
- \n
- \u00bfQu\u00e9 tan cerca del sistema de secado est\u00e1 la fuente de calor? Espec\u00edficamente, \u00bfcu\u00e1les son los costos de movimiento de fluidos desde el punto A al punto B, en t\u00e9rminos de requisitos de bombeo de l\u00edquido o manejo de gas y c\u00f3mo afecta esto a la estrategia general de integraci\u00f3n de calor?<\/li>\n<\/ul>\n
- \n
- \u00bfCu\u00e1l es el requisito de gasto de capital adicional ("Capex") para instalar tuber\u00edas o conductos aislados desde la fuente hasta el sistema de secado? \u00bfSon estos requisitos de Capex tan altos que la recuperaci\u00f3n de la inversi\u00f3n para incorporar el calor residual en el sistema de secado resulta en una recuperaci\u00f3n excesivamente larga? \u00bfper\u00edodo?<\/li>\n<\/ul>\n
- \n
- \u00bfSon los problemas de corrosi\u00f3n a largo plazo una preocupaci\u00f3n, como los materiales de selecci\u00f3n para las tuber\u00edas de gas del digestor, conductos de gas de chimenea, etc. (especialmente si los "gases \u00e1cidos" se condensan fuera de la corriente de gas al enfriarse, lo que genera condiciones corrosivas dentro de la tuber\u00eda, ductos o equipos de transferencia de calor) y, de ser as\u00ed, \u00bfcu\u00e1l es su impacto en el Capex, as\u00ed como el impacto en los gastos operativos (\u201cOpex\u201d) (por ejemplo, los problemas de corrosi\u00f3n a largo plazo requerir\u00e1n gastos de mantenimiento a largo plazo)?<\/li>\n<\/ul>\n
- \n
- How much heat will the waste heat stream lose from point A to B and will this heat loss drive the heat recovery economics toward an unfavorable overall result? This point is particularly important if the waste heat stream is steam, where the latent (or condensing\/phase change) heat of the steam is the primary (or desirable) heat transfer mechanism.\u00a0 For example, if the waste steam loses sufficient energy in transit from its source to the drying system, will the steam lose so much heat that it condenses to liquid form, thereby \u201crobbing\u201d the heat integration scheme of the steam\u2019s latent\/condensing heat prior to the drying system (noting that the latent\/condensing heat of steam is significantly higher than the specific heat capacity of either the steam or liquid forms)?<\/li>\n<\/ul>\n
In general, there are many possibilities for incorporating waste heat into a thermal drying process.\u00a0 However, the costs (in terms of Capex and Opex considerations) to incorporate the heat integration step must also be considered to determine whether doing so is practical.<\/p>\n
Para obtener m\u00e1s informaci\u00f3n sobre las estrategias de integraci\u00f3n del calor residual y nuestra tecnolog\u00eda de secado de lecho fluido, comun\u00edquese con un gerente de ventas regional de Schwing Bioset llamando al 715-247-3433,<\/strong>\u00a0<\/strong>Env\u00edenos un correo electr\u00f3nico<\/strong><\/a><\/span><\/span>, y \/ o visite nuestro sitio web<\/strong>\u00a0<\/strong>aqu\u00ed<\/a><\/span>.<\/strong><\/p>\n
<\/p>\n
A continuaci\u00f3n se muestra solo un ejemplo de las numerosas posibilidades de recuperaci\u00f3n de calor.<\/em><\/p>\n
![\"Schwing](\"http:\/\/cdn2.hubspot.net\/hubfs\/51084\/Stack_Gas_Heat_Integration_Schematic.jpg\" "\\"Esquema")
<\/strong><\/em><\/p>\nDescargue nuestros folletos e informes de aplicaciones<\/a>\nSubscribe to Start Receiving Schwing Bioset eNews<\/a>
\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"Written by Joe Scholl, February 11, 2016 The word \u201cheat\u201d may be defined as the amount of energy that is transferred from one system to another, typically via a temperature differential or \u201cgradient,\u201d and the amount of heat something possesses may be stated in terms of British Thermal Units (BTU), Joules (J), calories (cal), […]<\/p>","protected":false},"author":2,"featured_media":3636,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"\u00a0\r\n\r\n\r\n\r\nWritten by Joe Scholl, February 11, 2016<\/em>\r\n\r\nThe word \u201cheat\u201d may be defined as the amount of energy that is transferred from one system to another, typically via a temperature differential or \u201cgradient,\u201d and the amount of heat something possesses may be stated in terms of British Thermal Units (BTU), Joules (J), calories (cal), etc. (as compared to reference temperature or datum state).\u00a0 Measured over time, heat becomes energy that is used to accomplish tasks, and that energy may be measured in BTU\/hr, J\/sec, etc.\u00a0 There is a definite cost to energy usage, as evidenced by any plant\u2019s energy utility bill.\u00a0 As such, there is a high emphasis nowadays in energy re-use (\u201cheat integration\u201d) via applying \u201cwaste\u201d heat from one process to another process needing energy.\u00a0 While many such heat\/energy integration techniques may be easily accomplished, there may, under certain circumstances, be limitations to the extent such energy re-utilization efforts may be accomplished.\r\n\r\nMany municipal wastewater treatment plants (WWTP\u2019s) are utilizing anaerobic digestion systems and these processes may produce digester gas or \u201cbiogas\u201d (chiefly methane and carbon dioxide with other trace chemical constituents and\/or contaminants).\u00a0 The biogas produced may be used by a variety of means, such as for maintaining heated conditions in the digester units and\/or in gas engines that drive generators to produce electricity in a combined heat and power cycle (CHP).\u00a0 These CHP processes generally produce two \u201cwaste\u201d heat streams by which heat may be extracted and re-utilized (i.e. \u201cintegrated\u201d) in another process.\u00a0 These two streams are the exhaust (or \u201cstack\u201d) gas from the biogas combustion process itself and a hot water stream (typically a water\/glycol mixture) or steam produced from using cooling water to maintain reasonable CHP engine temperatures.\r\n\r\nThe extent to which these particular waste heat sources can be utilized depends on many factors, including the costs associated with purchasing, installing, and operating the heat recovery equipment.\u00a0 With respect to utilizing a waste heat source in a sludge thermal drying operation, some of these factors may include:\r\n
- \r\n \t
- How close to the drying system is the heat source? Specifically, what are the fluid movement costs from point A to point B, in terms of liquid pumping or gas handling requirements and how does this impact the overall heat integration strategy?<\/li>\r\n<\/ul>\r\n
- \r\n \t
- What is the additional capital expenditure (\u201cCapex\u201d) requirement to install insulated piping or ducting from the source to the drying system and are these Capex requirements so high that the payback to incorporate the waste heat into the drying system result in an unreasonably long payback period?<\/li>\r\n<\/ul>\r\n
- \r\n \t
- Are long-term corrosion issues a concern, such as materials of selection for digester gas piping, stack gas ducting, etc. (especially if \u201cacid gases\u201d condense-out of the gas stream upon cooling, leading to corrosive conditions within the piping, ducting, or heat transfer equipment) and, if so, what is their Capex impact, as well operating expense (\u201cOpex\u201d) impact (e.g. will long-term corrosion issues require long-term maintenance expenses)?<\/li>\r\n<\/ul>\r\n
- \r\n \t
- How much heat will the waste heat stream lose from point A to B and will this heat loss drive the heat recovery economics toward an unfavorable overall result? This point is particularly important if the waste heat stream is steam, where the latent (or condensing\/phase change) heat of the steam is the primary (or desirable) heat transfer mechanism.\u00a0 For example, if the waste steam loses sufficient energy in transit from its source to the drying system, will the steam lose so much heat that it condenses to liquid form, thereby \u201crobbing\u201d the heat integration scheme of the steam\u2019s latent\/condensing heat prior to the drying system (noting that the latent\/condensing heat of steam is significantly higher than the specific heat capacity of either the steam or liquid forms)?<\/li>\r\n<\/ul>\r\nIn general, there are many possibilities for incorporating waste heat into a thermal drying process.\u00a0 However, the costs (in terms of Capex and Opex considerations) to incorporate the heat integration step must also be considered to determine whether doing so is practical.\r\n\r\nTo learn more about waste heat integration strategies and our Fluid Bed Drying Technology, please contact a Schwing Bioset Regional Sales Manager by calling 715-247-3433,<\/strong>\u00a0<\/strong>email us<\/strong><\/a><\/span><\/span>, and\/or visit our website<\/strong>\u00a0<\/strong>here<\/a><\/span>.<\/strong>\r\n\r\n\u00a0\r\n\r\nBelow is just one example of numerous heat recovery possibilities.<\/em>\r\n\r\n<\/strong><\/em>\r\n\r\n\u00a0","_et_gb_content_width":"","content-type":"","footnotes":""},"categories":[286,16,287],"tags":[295,235,294,296,188],"class_list":["post-2714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-municipal","category-news","category-other","tag-energy-re-use","tag-fluid-bed-drying","tag-heat-integration","tag-heat-recovery","tag-wastewater-treatment"],"_links":{"self":[{"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/posts\/2714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/comments?post=2714"}],"version-history":[{"count":0,"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/posts\/2714\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/media\/3636"}],"wp:attachment":[{"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/media?parent=2714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/categories?post=2714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.schwingbioset.com\/es\/wp-json\/wp\/v2\/tags?post=2714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- How much heat will the waste heat stream lose from point A to B and will this heat loss drive the heat recovery economics toward an unfavorable overall result? This point is particularly important if the waste heat stream is steam, where the latent (or condensing\/phase change) heat of the steam is the primary (or desirable) heat transfer mechanism.\u00a0 For example, if the waste steam loses sufficient energy in transit from its source to the drying system, will the steam lose so much heat that it condenses to liquid form, thereby \u201crobbing\u201d the heat integration scheme of the steam\u2019s latent\/condensing heat prior to the drying system (noting that the latent\/condensing heat of steam is significantly higher than the specific heat capacity of either the steam or liquid forms)?<\/li>\r\n<\/ul>\r\nIn general, there are many possibilities for incorporating waste heat into a thermal drying process.\u00a0 However, the costs (in terms of Capex and Opex considerations) to incorporate the heat integration step must also be considered to determine whether doing so is practical.\r\n\r\nTo learn more about waste heat integration strategies and our Fluid Bed Drying Technology, please contact a Schwing Bioset Regional Sales Manager by calling 715-247-3433,<\/strong>\u00a0<\/strong>email us<\/strong><\/a><\/span><\/span>, and\/or visit our website<\/strong>\u00a0<\/strong>here<\/a><\/span>.<\/strong>\r\n\r\n\u00a0\r\n\r\nBelow is just one example of numerous heat recovery possibilities.<\/em>\r\n\r\n
- Are long-term corrosion issues a concern, such as materials of selection for digester gas piping, stack gas ducting, etc. (especially if \u201cacid gases\u201d condense-out of the gas stream upon cooling, leading to corrosive conditions within the piping, ducting, or heat transfer equipment) and, if so, what is their Capex impact, as well operating expense (\u201cOpex\u201d) impact (e.g. will long-term corrosion issues require long-term maintenance expenses)?<\/li>\r\n<\/ul>\r\n
- What is the additional capital expenditure (\u201cCapex\u201d) requirement to install insulated piping or ducting from the source to the drying system and are these Capex requirements so high that the payback to incorporate the waste heat into the drying system result in an unreasonably long payback period?<\/li>\r\n<\/ul>\r\n
- How close to the drying system is the heat source? Specifically, what are the fluid movement costs from point A to point B, in terms of liquid pumping or gas handling requirements and how does this impact the overall heat integration strategy?<\/li>\r\n<\/ul>\r\n
- How much heat will the waste heat stream lose from point A to B and will this heat loss drive the heat recovery economics toward an unfavorable overall result? This point is particularly important if the waste heat stream is steam, where the latent (or condensing\/phase change) heat of the steam is the primary (or desirable) heat transfer mechanism.\u00a0 For example, if the waste steam loses sufficient energy in transit from its source to the drying system, will the steam lose so much heat that it condenses to liquid form, thereby \u201crobbing\u201d the heat integration scheme of the steam\u2019s latent\/condensing heat prior to the drying system (noting that the latent\/condensing heat of steam is significantly higher than the specific heat capacity of either the steam or liquid forms)?<\/li>\n<\/ul>\n
- \u00bfSon los problemas de corrosi\u00f3n a largo plazo una preocupaci\u00f3n, como los materiales de selecci\u00f3n para las tuber\u00edas de gas del digestor, conductos de gas de chimenea, etc. (especialmente si los "gases \u00e1cidos" se condensan fuera de la corriente de gas al enfriarse, lo que genera condiciones corrosivas dentro de la tuber\u00eda, ductos o equipos de transferencia de calor) y, de ser as\u00ed, \u00bfcu\u00e1l es su impacto en el Capex, as\u00ed como el impacto en los gastos operativos (\u201cOpex\u201d) (por ejemplo, los problemas de corrosi\u00f3n a largo plazo requerir\u00e1n gastos de mantenimiento a largo plazo)?<\/li>\n<\/ul>\n
- \u00bfCu\u00e1l es el requisito de gasto de capital adicional ("Capex") para instalar tuber\u00edas o conductos aislados desde la fuente hasta el sistema de secado? \u00bfSon estos requisitos de Capex tan altos que la recuperaci\u00f3n de la inversi\u00f3n para incorporar el calor residual en el sistema de secado resulta en una recuperaci\u00f3n excesivamente larga? \u00bfper\u00edodo?<\/li>\n<\/ul>\n