1、2020/7/22,第三章攪拌器軸功率計(jì)算,1,第三章 機(jī)械攪拌軸功率計(jì)算,攪拌目的 提高氣液傳遞速率：打碎氣泡，增大氣液相的接觸面積；使培養(yǎng)液產(chǎn)生渦流，延長氣泡在液體中的停留時(shí)間，增大H0；減小氣泡外滯流液膜的厚度，從而減小傳遞過程中的阻力。 混合物料，增強(qiáng)傳質(zhì)和傳熱效果,2020/7/22,第三章攪拌器軸功率計(jì)算,2,一、機(jī)械攪拌通風(fēng)發(fā)酵罐（簡介）,2020/7/22,第三章攪拌器軸功率計(jì)算,3,H/D=2; d/D=1/3; B=0.1D ha=0.25D S=3d C=d 式中：H罐高; D罐的直徑; d攪拌器直徑; B 擋板寬度; ha封頭高度 ; S兩擋攪拌器之間距離；C底擋攪拌器

2、與下封頭底之間距離,2020/7/22,第三章攪拌器軸功率計(jì)算,4,二、攪拌器的型式及流型,（一）型式 軸向推進(jìn)：螺旋槳式 徑向推進(jìn)：渦輪式 1、型式,2020/7/22,第三章攪拌器軸功率計(jì)算,5,Lightnin Mixers Inc,2020/7/22,第三章攪拌器軸功率計(jì)算,6,Axial Flow Impellers,Recommended for applications requiring moderate pumping action and powder-wetting capabilities Superpitch design 1.5 pitch ratio for gr

3、eater mixing capabilities Standard axial flow Optional ring guard prevents damage from dip tubes, temperature probes and other in-tank devices,A100,2020/7/22,第三章攪拌器軸功率計(jì)算,7,Recommended for low- to medium-viscosity, flow-controlled applications Classic 45 pitched blade design Produces a desirable bala

4、nce of flow and shear The impeller of choice in many standard applications,A200,2020/7/22,第三章攪拌器軸功率計(jì)算,8,Recommended for axial-flow impeller for side-entry applications Designed for demanding pulp and paper applications Also used in other side-entry applications, such as oil storage Features minimal

5、radial flow,A312,2020/7/22,第三章攪拌器軸功率計(jì)算,9,Recommended for gas-liquid dispersion and mass transfer-controlled applications Can improve mass transfer by 30% compared with Rushton turbines Decreases shear rates up to 75% Can reduce energy costs up to 45% Improves yields in shear-sensitive processes,A315

6、,2020/7/22,第三章攪拌器軸功率計(jì)算,10,Recommended for higher-viscosity applications requiring high flow in the transitional flow regime Reduces blend time by half Shear rates are modest for both high- and low-viscosity conditions Fluid foil design delivers better axial motion and reduces power consumption,A320,

7、2020/7/22,第三章攪拌器軸功率計(jì)算,11,Recommended for up-pumping applications Ideal for multi-phase applications, such as fermentation, polymerization and hydrogenation High gas induction from surface Controls foaming,A340,2020/7/22,第三章攪拌器軸功率計(jì)算,12,Recommended for low-viscosity flow-controlled applications Varyin

8、g angle options optimize processes by changing the impeller diameter/tank ratio Maximizes flow with ability to add shear options Standard on the LIGHTNIN LFD Flocculator Improves results up to 40% vs. conventional pitched-blade turbines,A310/A510,2020/7/22,第三章攪拌器軸功率計(jì)算,13,Recommended for low viscosit

9、y flow-controlled applications in hostile environments Very low shear and higher flow than any other impeller Maintains flow and reduces power to 45% of conventional pitched-blade impellers Structural composite is lightweight and extremely resistant to corrosion Excellent for use with acids, caustic

10、s, chlorinated solutions and other aggressive chemicals,A6000,2020/7/22,第三章攪拌器軸功率計(jì)算,14,Radial-Flow Impellers,Recommended for high-shear mixing and gas-liquid applications Radial design provides shear to achieve good contacting for liquid-liquid dispersions and emulsions Also recommended for gas disp

11、ersions Moderate pumping action,R100,2020/7/22,第三章攪拌器軸功率計(jì)算,15,Recommended for copper extraction pumping systems Produces higher-efficiency, lower-power flow patterns Increased hydraulic efficiency permits use of smaller gearboxes Reduced installed horsepower for lower energy costs Available in 316 s

12、tainless steel, high-alloy stainless steel, titanium and composites,R320,2020/7/22,第三章攪拌器軸功率計(jì)算,16,Recommended for higher-viscosity applications Contoured two-bladed anchor design For use in blending and heat transfer, with viscosities from 10,000 to 100,000 centipoise,R400,2020/7/22,第三章攪拌器軸功率計(jì)算,17,R

13、ecommended for: High-shear applications with elements that are difficult to disperse Provides the highest shear of all LIGHTNIN impeller designs Excellent for high-shear, solid-liquid and liquid-liquid applications Typically used with difficult-to-dispense pigments,R500,2020/7/22,第三章攪拌器軸功率計(jì)算,18,Circ

14、ulator Impellers,Recommended for waste treatment draft tube circulators Efficient swept-back design eliminates the large power increase (up to 50%) from fiber build-up on the leading edge,C102,2020/7/22,第三章攪拌器軸功率計(jì)算,19,Recommended for high-viscosity applications Circulator impeller has high head capa

15、bility 3 times greater than conventional impellers,C104,2020/7/22,第三章攪拌器軸功率計(jì)算,20,Recommended for mineral draft tube circulators Unique airfoil design can increase impeller wear life by 2 to 6 times,C110,2020/7/22,第三章攪拌器軸功率計(jì)算,21,Chemineer Inc,2020/7/22,第三章攪拌器軸功率計(jì)算,22,Maxflo WSE,Favorable Applications

16、: A high efficiency, advanced side-entering hydrofoil impeller that produces maximum pumping action. It has more cavitation resistance than other designs through effective hydrodynamic design.,2020/7/22,第三章攪拌器軸功率計(jì)算,23,Favorable Applications: Good cost effective impeller for low concentrations of immiscible liquid or gas. Two very strong trailing vortices are shed from each blade. These areas of high shear are responsible