Hydrodynamic Investigation of the Air Cleaning Process From Fine Coal Dust

Hydrodynamic Investigation of the Air Cleaning Process From Fine Coal Dust | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Hydrodynamic Investigation of the Air Cleaning Process From Fine Coal Dust Abdugaffor Khurmamatov, Khusniddin Alimardonov, Akhmedova Kumush This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7910831/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In this study, a structurally improved dust-settling chamber was developed and experimentally tested to efficiently clean air from fine-dispersed coal dust. To enhance the coagulation of dust particles, 18 rows of self-cleaning hanging chains were installed in the upper inner part of the device. In addition, 12 water-spraying nozzles were arranged in a zigzag pattern to increase wet-cleaning efficiency. During the research, the effects of air velocity, water consumption, hydraulic resistance, and the number of chains and nozzles on the device’s performance were investigated. The results showed that when the air velocity increased from 0.5 m/s to 2.5 m/s, the cleaning efficiency rose from 35.4% to 99.1%. The optimal operating conditions of the device were determined as follows: air velocity — 2.5 m/s, hydraulic resistance — 700 Pa, hydraulic resistance coefficient — 7.2, and Reynolds number — 7432. Using the improved dust-settling chamber, the concentration of fine dust particles up to 5 µm in size was reduced from 31.1% to 13.8%. The results of the study have practical significance for improving air purification efficiency in industrial enterprises and reducing environmental load. coal dust dust-settling chamber self-cleaning chains water-spraying nozzle coagulation efficiency Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7910831","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":542793898,"identity":"d4923c5f-8d15-4115-8a04-eddbc461a29c","order_by":0,"name":"Abdugaffor Khurmamatov","email":"","orcid":"","institution":"Almalyk State Technical Institute","correspondingAuthor":false,"prefix":"","firstName":"Abdugaffor","middleName":"","lastName":"Khurmamatov","suffix":""},{"id":542793899,"identity":"22f039ae-d516-4210-93df-58b8b8bc24a7","order_by":1,"name":"Khusniddin Alimardonov","email":"","orcid":"","institution":"Yangiyer Branch of the Tashkent Chemical-Technological Institute","correspondingAuthor":false,"prefix":"","firstName":"Khusniddin","middleName":"","lastName":"Alimardonov","suffix":""},{"id":542793900,"identity":"5685bafd-0c49-4ae7-980c-ecfbb6d5c4df","order_by":2,"name":"Akhmedova Kumush","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABFklEQVRIiWNgGAWjYBACCRDB2AAiE0CEjRw/mF1AvJY0Y0kQJ8GAeC2HEzccANF4tEjOyE6T/Lnjjrx5e/LDxzw1h42Nz69O/PDAgEGeX+wAVi3SErnbpHnPPDOcc+aZsTHPsXQ5sxtvN0sAHWY4c3YCVi1yIC2MbYcZZ0gkmEnOYLM2NrtxdgNIS4LBbdxaJH+2HbafIZH+/eeMf8yJm2ec3fwDnxaQwyR42w4nzpDIMWP42OacuIG/dxteWyR73m625m17ljyD502xxMe+NGOJG7zbLBIMJHD6ReJ47sabP9vu2M5gT9/4IeEbMCr7z26++aPCRp5fGrsWKDiAbApYpQQ+5eha+A/gUDQKRsEoGAUjFQAAV0xmBrYKx/EAAAAASUVORK5CYII=","orcid":"","institution":"Almalyk State Technical Institute","correspondingAuthor":true,"prefix":"","firstName":"Akhmedova","middleName":"","lastName":"Kumush","suffix":""}],"badges":[],"createdAt":"2025-10-21 05:53:13","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7910831/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7910831/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":95737026,"identity":"6a8bf8e8-47b6-41b9-a285-d4a4f38fb173","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"docx","order_by":0,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":522829,"visible":true,"origin":"","legend":"","description":"","filename":"XurmamatovScopusArticle.docx","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/372cca116c3a4d8551d30ad8.docx"},{"id":95799605,"identity":"49e4b772-22e0-4faf-b614-a5cb8d2bddd9","added_by":"auto","created_at":"2025-11-13 08:20:21","extension":"json","order_by":1,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":4995,"visible":true,"origin":"","legend":"","description":"","filename":"a236469f26684d80b93832a915fdd11b.json","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/16483f6072c581ec7900b466.json"},{"id":95737028,"identity":"750c75d9-c04b-49c0-8163-6b15f21fc2fc","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"xml","order_by":2,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":105210,"visible":true,"origin":"","legend":"","description":"","filename":"a236469f26684d80b93832a915fdd11b1enriched.xml","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/272451747aa22247f69c5c82.xml"},{"id":95737019,"identity":"81b65842-febb-4e1b-b937-6335a63f0d9a","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":5,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":241647,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage1.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/69fca21573b8f22cfd463c67.png"},{"id":95801374,"identity":"3796d3a0-db9c-44f2-97aa-e082a8d33b13","added_by":"auto","created_at":"2025-11-13 08:25:14","extension":"png","order_by":6,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":196895,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage2.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/9faec19a7dc4793cdbbf73ea.png"},{"id":95737024,"identity":"63ed4cd3-7aaa-4361-a923-52196d1d8f94","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"wmf","order_by":7,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":632,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage3.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/1882811be63b33435b146237.wmf"},{"id":95801290,"identity":"d5ccdd66-9486-4e56-abba-5f38daa64163","added_by":"auto","created_at":"2025-11-13 08:24:51","extension":"wmf","order_by":8,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":632,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage3.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/b015aec83ce276885a9b932d.wmf"},{"id":95737022,"identity":"86f21ebd-a7d4-4e45-91ad-ace18f86918e","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"wmf","order_by":9,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":876,"visible":true,"origin":"","legend":"","description":"","filename":"image11.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/b7891911ca27ed91246e71ed.wmf"},{"id":95737023,"identity":"0bb1ca26-0526-41d0-ab95-0eb8083a08f0","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"wmf","order_by":10,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1286,"visible":true,"origin":"","legend":"","description":"","filename":"image12.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/3db193cac1a5fbf895a3616e.wmf"},{"id":95799608,"identity":"a57acce6-de04-4a57-98b2-53971f5ee503","added_by":"auto","created_at":"2025-11-13 08:20:21","extension":"wmf","order_by":11,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":824,"visible":true,"origin":"","legend":"","description":"","filename":"image13.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/9c429f1d559f40007f300868.wmf"},{"id":95801976,"identity":"cdb70f63-1663-4a98-972e-95459d3681a5","added_by":"auto","created_at":"2025-11-13 08:26:33","extension":"wmf","order_by":12,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1092,"visible":true,"origin":"","legend":"","description":"","filename":"image14.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/013b1cc9d770dbae098e44ff.wmf"},{"id":95801467,"identity":"f40ec5ef-af5c-43a2-91bf-29ff6028134e","added_by":"auto","created_at":"2025-11-13 08:25:26","extension":"wmf","order_by":13,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":894,"visible":true,"origin":"","legend":"","description":"","filename":"image3.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/613e8b1505f231548d38c0ff.wmf"},{"id":95737033,"identity":"871d5fc3-3d06-4c9a-8fe2-11f1229af425","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"wmf","order_by":14,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":924,"visible":true,"origin":"","legend":"","description":"","filename":"image4.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/452b7800375bf6c8c2e846c0.wmf"},{"id":95737030,"identity":"652bb9ab-2b0e-48e1-b443-5435c1755b12","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"wmf","order_by":15,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":988,"visible":true,"origin":"","legend":"","description":"","filename":"image5.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/df43940054075b36ce2e8ca4.wmf"},{"id":95802076,"identity":"325315be-9a46-4bfa-973f-7443c572c05e","added_by":"auto","created_at":"2025-11-13 08:26:48","extension":"wmf","order_by":16,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1102,"visible":true,"origin":"","legend":"","description":"","filename":"image6.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/055e4987b74ecd108d5d0315.wmf"},{"id":95737032,"identity":"ad89df49-e1b1-467c-9804-ffa23e9419c5","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"wmf","order_by":17,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1070,"visible":true,"origin":"","legend":"","description":"","filename":"image7.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/445962c5f1cfef5abb8aeb1b.wmf"},{"id":95800931,"identity":"25d828fb-8002-419a-a82a-b140f4997116","added_by":"auto","created_at":"2025-11-13 08:23:58","extension":"wmf","order_by":18,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1144,"visible":true,"origin":"","legend":"","description":"","filename":"image8.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/9fde4db28ff9ab1e0f453dba.wmf"},{"id":95801246,"identity":"6f03dce7-6cfb-4e8a-be89-880ca2d67dbe","added_by":"auto","created_at":"2025-11-13 08:24:47","extension":"wmf","order_by":19,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1256,"visible":true,"origin":"","legend":"","description":"","filename":"image9.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/235ae0a4ad171ff680711bd3.wmf"},{"id":95737029,"identity":"361c9f76-bc30-448b-8302-7c26625e06df","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":20,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":49108,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage1.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/42445589ed7e5ed4edbebcb0.png"},{"id":95737043,"identity":"4f69ca15-d6a8-41aa-a47d-6f7e23f8f104","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":21,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":42392,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage2.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/95702fc21c44909de54728d7.png"},{"id":95801136,"identity":"46dfcb60-b421-4f0e-bff0-8f78b1f61286","added_by":"auto","created_at":"2025-11-13 08:24:34","extension":"png","order_by":22,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":517,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage3.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/ba465f98244780e7f64e5dde.png"},{"id":95737035,"identity":"9e451872-4bec-40c4-89d3-5244ccfbeca5","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":23,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":517,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage3.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/652c4b5f458bf4b99cc3a426.png"},{"id":95800815,"identity":"73c8be9e-f7fb-46d6-8486-59db3c5f5901","added_by":"auto","created_at":"2025-11-13 08:23:37","extension":"png","order_by":24,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":742,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage11.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/71daddc0034f701ee95b360f.png"},{"id":95737047,"identity":"68d8e582-0857-4c2d-b731-fe1306c17958","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":25,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1764,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage12.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/55cf8d0578435ffdf9def230.png"},{"id":95737036,"identity":"0e9e8c63-ed74-4495-abce-d5da2a8fdec5","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":26,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":861,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage13.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/8e941177b3dabe50cedad629.png"},{"id":95737039,"identity":"40599ebd-2ac0-4555-9538-10f62a5222bc","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":27,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1044,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage14.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/89acdad63aec22ea2ff361ee.png"},{"id":95799539,"identity":"ec85e8dd-46f6-492d-9553-4705eadcc4d5","added_by":"auto","created_at":"2025-11-13 08:20:15","extension":"png","order_by":28,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1099,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage3.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/d1f1fb3a00da04860b6eca8e.png"},{"id":95737052,"identity":"9d8aa879-57eb-49ad-b916-863239840b8c","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":29,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1235,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage4.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/78c45e2d2e09a64f6b8a4cec.png"},{"id":95737050,"identity":"85ccd65d-02e1-416d-be2d-5774d35b9c59","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":30,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":947,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage5.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/3037c472c4e3450e1e36e8f1.png"},{"id":95801741,"identity":"87676577-f733-4701-92b0-fd662837b49c","added_by":"auto","created_at":"2025-11-13 08:26:05","extension":"png","order_by":31,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1377,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage6.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/749ddec16131a443eb673e94.png"},{"id":95737049,"identity":"9b695df9-6693-4acd-be54-d2c6c0cf2c34","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":32,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1304,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage7.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/58ed190076c61be500a74b20.png"},{"id":95737048,"identity":"22314b25-0a5a-4f4d-a773-084b906e569f","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":33,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1824,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage8.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/fe09b61bb6ed56c0d73ce240.png"},{"id":95737051,"identity":"ac361ad8-ad33-4bcf-9b95-681b3712ddc4","added_by":"auto","created_at":"2025-11-12 12:56:35","extension":"png","order_by":34,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1319,"visible":true,"origin":"","legend":"","description":"","filename":"Onlineimage9.png","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/2adffe5400954731955ab455.png"},{"id":95737053,"identity":"c0c31331-2da1-4987-b324-57f5019e0931","added_by":"auto","created_at":"2025-11-12 12:56:36","extension":"xml","order_by":35,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":103331,"visible":true,"origin":"","legend":"","description":"","filename":"a236469f26684d80b93832a915fdd11b1structuring.xml","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/23d8d61519265197c9c2592d.xml"},{"id":95737054,"identity":"9bd28a8a-c489-48b5-8831-e7e41e801f49","added_by":"auto","created_at":"2025-11-12 12:56:36","extension":"html","order_by":36,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":111607,"visible":true,"origin":"","legend":"","description":"","filename":"earlyproof.html","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1/0cd4076d0f759ff6306f964d.html"},{"id":96247304,"identity":"3097ec5a-5a7a-4966-b0b5-796defc526fc","added_by":"auto","created_at":"2025-11-19 07:27:21","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":518392,"visible":true,"origin":"","legend":"","description":"","filename":"XurmamatovScopusArticle.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7910831/v1_covered_f892f7de-1ebc-4eb9-854e-616a75587c24.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"\u003cp\u003eHydrodynamic Investigation of the Air Cleaning Process From Fine Coal Dust\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"coal dust, dust-settling chamber, self-cleaning chains, water-spraying nozzle, coagulation efficiency","lastPublishedDoi":"10.21203/rs.3.rs-7910831/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7910831/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn this study, a structurally improved dust-settling chamber was developed and experimentally tested to efficiently clean air from fine-dispersed coal dust. To enhance the coagulation of dust particles, 18 rows of self-cleaning hanging chains were installed in the upper inner part of the device. In addition, 12 water-spraying nozzles were arranged in a zigzag pattern to increase wet-cleaning efficiency. During the research, the effects of air velocity, water consumption, hydraulic resistance, and the number of chains and nozzles on the device\u0026rsquo;s performance were investigated. The results showed that when the air velocity increased from 0.5 m/s to 2.5 m/s, the cleaning efficiency rose from 35.4% to 99.1%. The optimal operating conditions of the device were determined as follows: air velocity \u0026mdash; 2.5 m/s, hydraulic resistance \u0026mdash; 700 Pa, hydraulic resistance coefficient \u0026mdash; 7.2, and Reynolds number \u0026mdash; 7432. Using the improved dust-settling chamber, the concentration of fine dust particles up to 5 \u0026micro;m in size was reduced from 31.1% to 13.8%. The results of the study have practical significance for improving air purification efficiency in industrial enterprises and reducing environmental load.\u003c/p\u003e","manuscriptTitle":"Hydrodynamic Investigation of the Air Cleaning Process From Fine Coal Dust","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-11-12 12:56:30","doi":"10.21203/rs.3.rs-7910831/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"4fc41da1-50ea-410e-9e61-6a56429af9d7","owner":[],"postedDate":"November 12th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-11-17T17:23:31+00:00","versionOfRecord":[],"versionCreatedAt":"2025-11-12 12:56:30","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7910831","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7910831","identity":"rs-7910831","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}