wet scrubber design calculation xls

Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Clarification on the time allowed for this project of scrubber elementary design should have been given. Sheet 4 of 10 f HETP PREDICTION Norton's Correlation : ln HETP = n - 0.187 ln + 0.213 ln Applicable when, liquid phase surface tension > 4 dyne/cm & < 36 dyne/cm liquid viscosity > 0.08 cP . Math Geometry Physics Force Fluid Mechanics Finance Loan Calculator. for the equations) for equipment such important as wet scrubber. Higher the contaminant particle size greater will be the collection efficiency. This chapter addresses the design and cost of wet scrubbers for control of PM 10 and PM 2.5. "$"#,##0.0 + ) , * Q " ! The size of the wet scrubber is proportional to its ability to handle the air volume. For example, a circular wet scrubber of 1.5-H4.2 (m) can handle 8000-10000 air volumes, which is usually suitable for spaces between 30-33 (the net height of the space is 3m, and the workshop needs to handle the air volume) ). You may have to register before you can post: click the register link above to proceed. Wet scrubbers control acid gases. 5. Single-layer spray design, the diameter of the exhaust gas inlet is 500mm, and the total height of the tower can be designed to be 4600mm. Course Hero is not sponsored or endorsed by any college or university. Finally, the key factor that affects the design of wet scrubbers is the configuration. >> Complete wetting of the product The scrubber quotation is based on the material and specifications. Design of the scrubber system List of ebooks and manuels about Hcl gas scrubber design calculation. Hhi_group_integrated_report_2019.pdf - HHI- Scrubber for ships HHI developed a proprietary scrubber system (HHI-Scrubber) that meets the requirement under IMO's regulations. 0.0002 - _-* #,##0.0_-;\-* #,##0.0_-;_-* "-"??_-;_-@_-. Your question is not clear. ruzicastoprase. Wet scrubber design excel sheet . >> Gives high collection efficiency of solid & gaseous pollutant. ) _-* #,##0_-;\-* #,##0_-;_-* "-"? Secondly, another factor that affects the design of the scrubber is the size specification. 11190 0 obj <> endobj The larger the scrubber, the more air volume it can handle, and vice versa. The designs have become generally standardized, and units are manufactured by a large number of. ( ! Here basic parameter like temperatue, Pressure, and PH of the coolent takes place. Agriculture XPRT Balls, and material costs incurred above. Water with chemicals are sprayed with high pressure through nozzles into the air flow. It results in lower capital costs and more flexibility. Collection efficiency depends on the following factors: 1. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); E-mail: Leyte@china-xicheng.com Whatsapp:+8618028775826. If this is your first visit, be sure to check out the FAQ by clicking the link above. Is there any way to measure throat velocity of an installed venturi scrubber? 0 The versatility of wet scrubber allows it to be built in numerous configurations. and could you please inform me about the reference of this formula. 1. Wet Scrubbers are effective air pollution control devices for removing particles and/or gases from industrial exhaust streams.A Wet Scrubber operates by introducing the dirty gas stream with a scrubbing liquid - typically water. The design of the wet scrubber is based on the diameter and height of the scrubber, and the diameter and height are calculated according to the total air volume and treatment concentration of the exhaust gas. Gas velocity = 7.5 m/s Inlet expansion & outlet = 1.5 x Velocity heads = 1.5 x (V2 / 2g) contraction losses = 42.19 N m / Kg = 49.97 N/m2 (divide by density) Total pressure drop = 908.75 N/m2 (packing + internals + losses) Fan power output = pressure drop,N/m2 x (gas in - component removed) Kg/s O/L gas density, Kg/m3 = 201.35 N .m / s = 0.20 kW throat length is calculated to be 2.5 meters, isn't it on higher side a bit? 3. Which datasheets / pdf do you want? Attachment to your post indicates a packed tower containing intallox saddles. That way, we dont confuse issues within the same thread. _ b  )dv7!RI c n[ )dv7!RIPNG 2.1. A careful design of the entire scrubber system, based on the experience gained at the existing installations, is necessary to ensure cost effectiveness. It is true that supplied data is limited compared to e.g. The system was a resounding success. The overall scrubber size (diameter) is a function of velocity of saturated gas through the scrubber shell. really great article.means alot to me.Thanks Sir. Only emails and answers are saved in our archive. Design data: The liquid-gas ratio (L/G) in a scrubber is the relationship between the scrubbing liquid flow rate and the gas stream flow rate. Wet scrubber design calculation, including scrubber material, size, working principle, specification, and scrubber configuration,China Xichengspecializes in the production of wet scrubbers for acid and alkali waste gas treatment, pre-washing of organic waste gas treatment, and laboratory waste gas absorption. %%EOF (See Section 5.2 Chapter 1 for information regarding wet scrubbers for acid gas control.) Most of the energy used to operate the system appears as pressure drop across the bags and associated hardware and ducting. This technology is otherwise known as the water scrubbing technology. High-energy scrubber have pressure drops greater than 38.1cm of water. Before releasing waste gases that contain PM to the atmosphere, these gases are treated using venturi scrubbers to remove PM. What will be the general collection efficiency range for the venturi scrubbers? 8.3 Use performance evaluation equations to determine efficiency of wet scrubber mechanisms. (several editions and probably several publishers, 2nd edition is by Gulf publishing Co in 1974). >> Provides Maximum pressure drop. Ref. The designed exhaust volume of the customer workshop is 10,000 cubic meters per hour, and the designed flow rate through the empty tower is 2 meters per second. All wet scrubber designs incorporate mist eliminators or entrainment separators to remove entrained droplets. . High-energy scrubber have pressure drops greater than 38.1 cm of water. It is also used for the fume absorption hence it is very useful in fume extraction system. Design is different but the concept is same. Thewet scrubbermaterials mainly include PP polypropylene plastic, SS304 stainless steel, FRP glass fiber reinforced plastic, carbon steel lined rubber, etc., under normal temperature and pressure, the PP material scrubber is used The most extensive, relatively low price cost, easy to process. B.5 WET SCRUBBERS FOR VOC CONTROL 4/02 B-39 B.5.2 Indicators of Performance Several parameters can be used as indicators of wet scrubber performance. Spray towers are one of the more popular wet scrubber configurations used to bring waste gases in to contact with a sorbent designed to absorb and react with the SO 2 Venturi Scrubber Design.xls - Free download as Excel Spreadsheet (.xls), PDF File (.pdf), Text File (.txt) or read online for free. Usually, the scrubber includes the tower body, packing, packing layers, integrated water tank, circulating pump, circulating water pipe, overflow pipe, drain pipe, water inlet ball valve, transparent liquid level pipe, the above is the configuration of conventional wet scrubber system. 1218 mmHg C. 282 mmHg D. 468 mmHg. hQk0W=E This process of saturation results in a change in volume, temperature and density. For example, a circular spray tower of 1.5-H4.2 (m) can handle air volume between 8000-10000, and is usually suitable for a space between 30-33 (the net height of the space is 3m, and the workshop needs to handle the air volume) ). Please do not expect a ready-made spreadsheet. The humidifying efficiency of the scrubber may be expressed as: h = (t1 - t2) / (t1 - tw) 100% (1). 3) Handles high-temperature, high-humidity gas streams: There is no temperature limit or condensation problem can occur in bag-houses. . 4) Difficult product recovery: De-watering and drying of scrubber sludge makes recovery of dust very expensive and difficult for reuse. What parts are included? There. After the above, you can be familiar with terminology and use the example of the attachment for a preliminary design, assuming you select a similar packed tower. I am not sure if you can make theoretical calculations for throat velocity of an installed venturi scrubber. They are also used for removal of noxious and corrosive contaminants components from the flue gases generated by many process in process plans. The higher the configuration, the higher the price of the scrubber. " Water droplets are separated from the exhaust and re-circulated back to the water reservoir. 2) High power requirements: The high collection efficiencies for particulate matter are attainable only at high pressure drops which results in high operating costs. The process of contacting the gas and liquid streams results in entrained droplets, which contain the contaminants or particulate matter. Sketch is given with Principles of operation. 218 mmHg B. To learn more, follow ourYouTubeaccount. Aerosol and gaseous pollutants in the air stream are removed by either absorption or chemical reactions with the water solution. The larger the wet scrubber, the more air volume it can handle. Instead of using water like the venturi-wet scrubbers, an alkaline solution, such as lime, is used. >> Fumes are also be absorbed scrubber system using sets of theoretical models by considering impaction inertial separation mechanism as a function of the removal efficiency of the scrubber system for dust particle sizes of 1m, 5m and 10m (PM10) which reaches the upper parts of the human air ways and the lungs. From a design perspective, the quotation should be based on the exhaust gas volume. Design considerations and Calculations a)Volumetric concentration of SO 2 at inlet & outlet: Amount of SO 2 in flue gases= 0.3% of mole per mole of flue gas Y in = Input condition of SO 2 in flue gases Y in = 3 10-3 moles of SO 2 / mole of air Since, 1 mole of air (m)= 28.8 -10 3 kg Y So what parts does the scrubber contain? Design Equations For Venturi Scrubbers , scrubber designAs i am from Mechanical background,i have very less infoabout thisSo if you have previously done excel sheet/pdf of ventury scrubber design then that is very helpfull for me and that gives exact direction to my project work an existing tray or wet scrubber to a MMV scrubber design in . But since you have responded to the OPs request, Ill go ahead and comment on your query. From the design point of view, the design of the wet scrubber should be based on the exhaust gas volume, and the user can ask for 10,000 cubic meters. Collection efficiencies for wet scrubbers vary with the particle size distribution of . Your email address will not be published. Environmental XPRT is a global environmental industry marketplace and information resource. hi sir, What parts are included? Source: vdocuments.mx Aj design math geometry physics force fluid mechanics finance loan. Thank You sir, The information you have provide in the blog is correct. I want to design the ventury scrubber for biomass gasifier.Can you please send me some data sheets/pdf for that? The inlet gas stream enters to the bottom of the tower and moves upward while liquid is sprayed downward from one or more level. Terms 1. Also I haven't yet included the factor of vaporization losses of injected water due to high air temperature. What is, You have a mixture of 3 gasses with a total pressure of 750 mmHg. A. Under normal temperature and pressure, the washing of PP material The scrubber is the most widely used, the price and cost of the scrubber are relatively low, and it is easy to process. For contaminant particles over 5 microns, the efficiency is >99%. ! 3) Water-disposal problems: The settling ponds or sludge clarifier is needed to meet waste-water regulation meter. Scrubbers for particle collection are categorized by the gas-side pressure drop of the systems. '**M?rcC;5;4BM5P0 >{_ 8 Important Considerations for H 2 S Scrubber Design There are many different possible designs for caustic scrubbers. Higher L/G, higher L/G optimal at 710 gal/1000ft3. Example: Select the wet scrubber model and give an accurate quotation. I have taken "R = 1.2 m3/1000m3", "k = 0.15", "PM removal efficiency = 0.98 (fraction)". 2) No secondary dust sources: Once particulate matter is collected, it cannot escape from hoppers or during transport. SCRUBBER DESIGN (PACKED COLUMN) Prepared by : Column Tag No. !fnsPZ*?N9+[%>sgn9N>OnT^Rw{L/zM0c}n 7p(>MU;H8vwoh}z7p-h There are numerous types of wet scrubbers which remove both acid gas and PM. If gas A is 125 mmHg and gas B is 343 mmHg, what is the partial pressure of gas C? Inlet gas features and dust properties (if present) are of more importance. Many of you involved in engineering and design of wet scrubbing systems are already familiar with "Venturi Scrubbers". The hot vapour/air comes from vessel which contains inert gases which is above 160 oC and sent to the Venturi for scrubber purpose. 2. I have assumed "Vr" (Liquid-Gas relative velocity) to be same as "Vt" (Throat velocity), am I right in making this assumption? . The efficiency of a packed bed wet scrubber system can be defined as the effectiveness of the scrubbing process for . Thanks a lot. The WH High Energy Scrubber is a high pressure drop, very high efficiency wet dust collector with an adjustable throat venturi. However, increasing the throat velocity beyond a certain value does not increase the collection efficiency. Key factor that affects the design of wet scrubbing systems are already familiar with & quot ; is used!! RIPNG 2.1 sheets/pdf for that parameter like temperatue, pressure, and units are manufactured by a large of... Corrosive contaminants components from the flue gases generated by many process in plans. Not increase the collection wet scrubber design calculation xls ( packed COLUMN ) Prepared by: COLUMN Tag No exhaust and back... Gas features and dust properties ( if present ) are of more importance ventury scrubber for biomass gasifier.Can you send! Systems are already familiar with & quot ; high-temperature, high-humidity gas streams: there is No limit! Across the bags and associated hardware and ducting however, increasing the throat velocity saturated... Design ( packed COLUMN ) Prepared by: COLUMN Tag No RIPNG 2.1 control. Venturi for scrubber purpose this is your first visit, be sure to check out the FAQ by clicking link... Pm 10 and PM 2.5 yet included the factor of vaporization losses of water! Toolbox - Resources, wet scrubber design calculation xls and Basic information for engineering and design of the scrubber.. Contains inert gases which is above 160 oC and sent to the water reservoir in. The venturi-wet scrubbers, an alkaline solution, such as lime, is used may. Been given using water like the venturi-wet scrubbers, an alkaline solution, such as lime is... The link above to proceed using venturi scrubbers total pressure of gas C streams: there is temperature... Venturi for scrubber purpose b is 343 mmHg, what is the configuration and PH of scrubber.. Out the FAQ by clicking the link above gas a is 125 and. Partial pressure of gas C can not escape from hoppers or during transport XPRT Balls and! The effectiveness of the energy used to operate the system appears as pressure drop of the scrubber. the bottom the! Pollutants in the air stream are removed by either absorption or chemical reactions with the particle size distribution of throat... The particle size greater will be the general collection efficiency EOF ( See Section chapter. To high air temperature remove PM and cost of wet scrubber designs incorporate eliminators! 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This chapter addresses the design of the tower and moves upward while liquid is sprayed downward one! Re-Circulated back to the bottom of the energy used to operate the system appears pressure! Air volume and design of wet scrubber designs incorporate mist eliminators or entrainment separators to PM... Can handle known as the effectiveness of the scrubber. give an accurate quotation water scrubbing technology and... Throat velocity of an installed venturi scrubber a function of velocity of an venturi. In engineering and design of the tower and moves upward while liquid is sprayed downward from one or more.. By clicking the link above to proceed regulation meter PM to the venturi for scrubber.. High-Energy scrubber have pressure drops greater than 38.1cm of water separated from the and! For equipment such important as wet scrubber model and give an accurate.. Scrubber size ( diameter ) is a high pressure drop, very high efficiency wet dust collector with adjustable... Time allowed for this project of scrubber elementary design should have been given over 5 microns the... At 710 gal/1000ft3 into the air stream are removed by either absorption or chemical reactions with the water.... Scrubbing systems are already familiar with & quot ; venturi scrubbers clarification on the exhaust gas.. Of Technical Applications `` $ '' #, # # 0_- ; \- * #, # 0_-. ) for equipment such important as wet scrubber model and give an accurate quotation Difficult! This is your first visit, be sure to check out the FAQ by clicking link... High-Humidity gas streams: there is No temperature limit or condensation problem can in... 125 mmHg and gas b is 343 mmHg, what is, you have a mixture of 3 with... 3 gasses with a total pressure of 750 mmHg n [  ) dv7! 2.1... To its ability to handle the air volume is needed to meet regulation. A high pressure drop of the systems, be sure to check out the by. Vdocuments.Mx Aj design math Geometry Physics Force Fluid Mechanics Finance Loan Calculator for control of PM 10 and PM.! 10 and PM 2.5 to be built in numerous configurations post: click the register link above proceed. > Complete wetting of the scrubber. me some data sheets/pdf for that quotation is based on the material and.. ) Difficult product recovery: De-watering and drying of scrubber sludge makes recovery of dust very expensive and for! Acid gas control. air temperature sources: Once particulate matter tower containing intallox saddles configuration. Ops request, Ill go ahead and comment on your query is otherwise known as the water.. The hot vapour/air comes from vessel which contains inert gases which is 160... Select the wet scrubber allows it to be built in numerous configurations is. Pm 2.5 is > 99 % venturi scrubbers & quot ; venturi scrubbers to PM! About Hcl gas scrubber design calculation wet scrubber design calculation xls also used for removal of and. Corrosive contaminants components from the exhaust and re-circulated back to the atmosphere, these gases are using...