{"id":7429,"date":"2025-01-10T13:42:15","date_gmt":"2025-01-10T04:42:15","guid":{"rendered":"https:\/\/www.dry-fog.com\/en\/?post_type=cases&#038;p=7429"},"modified":"2026-05-25T10:07:50","modified_gmt":"2026-05-25T01:07:50","slug":"nozzle-ind-cool-001","status":"publish","type":"cases","link":"https:\/\/www.dry-fog.com\/en\/projects-technology\/cases\/nozzle-ind-cool-001\/","title":{"rendered":"Preventing Condensation and Clinker Build-Up in Exhaust Gas Cooling at Incineration Facilities"},"content":{"rendered":"<section>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/10px-45px.svg) no-repeat 0 0;background-size:auto 30px;padding-left: 20px\">\n<h3 style=\"font-size: 1.2rem\">Solutions or Products Featured in This Case Study<\/h3>\n<\/div>\n<ul style=\"list-style-type: disc;margin-left:2.8rem;font-size: 1rem;line-height:2rem\">\n<div style=\"margin-bottom:0.8rem\">\n<li>Air-assisted spillback nozzle | ASPB Series<\/li>\n<\/div>\n<\/ul>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.dry-fog.com\/en\/wp-content\/uploads\/sites\/3\/2025\/01\/nozzle_gascool_001_article_01.jpg\" alt=\"\" width=\"1600\" height=\"500\" class=\"aligncenter size-full wp-image-5966\" \/><\/p>\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/10px-45px.svg) no-repeat 0 0;background-size:auto 30px;padding-left: 20px\">\n<h3 style=\"font-size: 1.5rem\">Key Reasons for Implementation<\/h3>\n<\/div>\n<ul style=\"list-style-type: disc;margin-left:2.8rem;font-size: 1rem;line-height:1.6rem\">\n<div style=\"margin-bottom:0.8rem\">\n<li>The proposal to use an air-assisted spillback nozzle enabled <span style=\"font-weight:bold;font-size: 1rem\">complete evaporation<\/span> during exhaust gas cooling with water spray.<\/li>\n<\/div>\n<div style=\"margin-bottom:0.8rem\">\n<li><span style=\"font-weight:bold;font-size: 1rem\">Its compatibility with the existing spray system<\/span> allows for seamless integration, enabling immediate operation without modifications to the customer&#8217;s equipment.<\/li>\n<\/div>\n<\/ul>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-top:5rem;margin-bottom:3rem;width:100%;border-bottom:1px solid #E9E9E9\"><\/div>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"float: left;padding-top:1.5rem;padding-left: 2rem\">\n<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/call-1.jpg\" alt=\"\" width=\"330\" height=\"296\" class=\"alignleft size-medium wp-image-5969\" \/>\n<\/div>\n<div style=\"float: right;margin-top: 4rem;margin-right: 3%\">\n<ul style=\"list-style-type: none;margin-left:0rem;font-size: 1.2rem;font-weight: bold;line-height:1.6rem\">\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/check.svg) no-repeat 0 0;background-size:auto 20px;padding-left: 30px\">\n<li>Not sure which product is right for you?<\/li>\n<\/div>\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/check.svg) no-repeat 0 0;background-size:auto 20px;padding-left: 30px\">\n<li>Curious about the total cost?<\/li>\n<\/div>\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/check.svg) no-repeat 0 0;background-size:auto 20px;padding-left: 30px\">\n<li>Wondering where to start?<\/li>\n<\/div>\n<div style=\"margin-bottom:0.8rem;font-size: 0.8rem;font-weight: bold;padding-left: 30px\">\n<li>We\u2019re here to help \u2013 reach out with any questions.<\/li>\n<\/div>\n<\/ul>\n<div style=\"text-align:center;margin-top:2rem;margin-bottom: 2rem\">\n<a style=\"margin-bottom:1rem;margin-left:2rem;justify-content: center;align-items: center;padding: 0.5rem 4rem;color: #fff;font-weight: 500;font-size:1.2rem;width:auto;background: #0C9B6F;border-radius: 30px\" href=\"https:\/\/www.dry-fog.com\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">Contact Us<\/a>\n<\/div>\n<\/div>\n<div style=\"clear:both\"><\/div>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-top:0rem;margin-bottom:3rem;width:100%;border-bottom:1px solid #E9E9E9\"><\/div>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/10px-45px.svg) no-repeat 0 0;background-size:auto 30px;padding-left: 20px\">\n<h3 style=\"font-size: 1.5rem\">Challenges Faced by the Customer<\/h3>\n<\/div>\n<p style=\"list-style-type: disc;margin-left:1.2rem;font-size: 1rem;line-height:1.6rem\">At a waste incineration facility, exhaust gas cooling was performed using a spillback nozzle from another supplier. However, condensation formed on the cooling tower&#8217;s inner walls, leading to <span style=\"font-weight:bold;font-size: 1rem\">clinker* accumulation<\/span>. This buildup disrupted exhaust gas flow, negatively affecting equipment operation.<\/p>\n<p style=\"list-style-type: disc;margin-left:1.2rem;font-size: 1rem;line-height:1.6rem\">The problem stemmed from large spray droplets that failed to fully evaporate. Additionally, the gas flow carried the spray to the tower\u2019s inner walls, where it adhered.<\/p>\n<p style=\"font-size: 0.9rem;line-height: 1.6rem;margin-left: 2rem\">*Clinker: A hard deposit formed when the inner walls of the tower become wet, causing organic matter, metallic elements, mineral particles, or molten substances to accumulate and solidify.<\/p>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-top:5rem;margin-bottom:3rem;width:100%;border-bottom:1px solid #E9E9E9\"><\/div>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/10px-45px.svg) no-repeat 0 0;background-size:auto 30px;padding-left: 20px\">\n<h3 style=\"font-size: 1.5rem\">Proposals from IKEUCHI<\/h3>\n<\/div>\n<p style=\"list-style-type: disc;margin-left:1.2rem;font-size: 1rem;line-height:1.6rem\">The conventional spillback nozzle from another supplier was a hydraulic nozzle that sprayed water using water pressure alone. In contrast, IKEUCHI developed and proposed the ASPB series, an air-assisted (pneumatic) spillback nozzle that uses compressed air to achieve finer atomization.<\/p>\n<p style=\"list-style-type: disc;margin-left:1.2rem;font-size: 1rem;line-height:1.6rem\">Using compressed air, the ASPB series nozzle produces finer droplet sizes compared to the conventional nozzle, effectively resolving the issue of incomplete evaporation. While the Sauter mean droplet diameter of the conventional nozzle was 130 \u03bcm, the air-assisted nozzle reduces it to approximately 97 \u03bcm.<\/p>\n<p style=\"list-style-type: disc;margin-left:1.2rem;font-size: 1rem;line-height:1.6rem\">Additionally, the use of compressed air increased the spray velocity, preventing dispersion and allowing efficient exhaust gas cooling without wetting the inner walls.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" style=\"margin-top: 2rem\" src=\"https:\/\/www.dry-fog.com\/en\/wp-content\/uploads\/sites\/3\/2025\/01\/nozzle_gascool_001_article_02.png\" alt=\"\" width=\"800\" height=\"247\" class=\"aligncenter size-full wp-image-5956\" \/><\/p>\n<p style=\"font-size: 0.9rem;line-height: 1rem\">CFD simulation of the cooling tower interior<\/p>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-top:5rem;margin-bottom:3rem;width:100%;border-bottom:1px solid #E9E9E9\"><\/div>\n<\/div>\n<div style=\"max-width:824px;margin-left:auto;margin-right:auto\">\n<div style=\"margin-bottom:0.8rem;background:url(https:\/\/www.dry-fog.com\/jp\/wp-content\/uploads\/sites\/2\/2024\/10\/10px-45px.svg) no-repeat 0 0;background-size:auto 30px;padding-left: 20px\">\n<h3 style=\"font-size: 1.5rem\">Benefits Achieved<\/h3>\n<\/div>\n<ul style=\"list-style-type: disc;margin-left:2.8rem;font-size: 1rem;line-height:1.6rem\">\n<div style=\"margin-bottom:0.8rem\">\n<li>Finer water atomization significantly reduced the accumulation of clinker and optimized the exhaust gas cooling process. This led to fewer operational issues and ensured stable plant operation.<\/li>\n<\/div>\n<div style=\"margin-bottom:0.8rem\">\n<li>Accurate control of the spray volume enabled more efficient cooling, while <span style=\"font-weight:bold;font-size: 1rem\">minimizing unnecessary water usage<\/span> helped reduce environmental impact. <\/li>\n<\/div>\n<\/ul>\n<\/div>\n<\/section>\n","protected":false},"featured_media":0,"template":"","cat_cases":[541],"tag_cases":[410,528,530,543,556,529],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dry-fog.com\/en\/wp-json\/wp\/v2\/cases\/7429"}],"collection":[{"href":"https:\/\/www.dry-fog.com\/en\/wp-json\/wp\/v2\/cases"}],"about":[{"href":"https:\/\/www.dry-fog.com\/en\/wp-json\/wp\/v2\/types\/cases"}],"wp:attachment":[{"href":"https:\/\/www.dry-fog.com\/en\/wp-json\/wp\/v2\/media?parent=7429"}],"wp:term":[{"taxonomy":"cat_cases","embeddable":true,"href":"https:\/\/www.dry-fog.com\/en\/wp-json\/wp\/v2\/cat_cases?post=7429"},{"taxonomy":"tag_cases","embeddable":true,"href":"https:\/\/www.dry-fog.com\/en\/wp-json\/wp\/v2\/tag_cases?post=7429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}