Distillation Equipment for Organic Solvents Ethanol, Methanol and Acetone

1. Summary
The principle of distillation technology is to make use of the difference of volatilization ability of each component in the mixture to make gas-liquid two-phase reverse multi-stage contact through the reflux of liquid phase and gas phase. Under the restriction of thermal energy drive and phase equilibrium, the volatile components (light components) are transferred from liquid phase to gas phase, while the refractory components from gas phase to gas phase. The migration in the liquid phase causes the mixture to be separated continuously, which is called distillation. The process of heat and mass transfer is simultaneous and is controlled by mass transfer process. Its distillation column is shown in Fig. 41 schematic diagram of the distillation column. The raw material enters the tower from a suitable position in the middle of the tower, and the tower is divided into two sections. The upper section is a distillation section without feeding, the lower section contains feeding plate as a withdrawal section, the condenser provides liquid reflux from the top of the tower, and the reboiler provides gas reflux from the bottom of the tower. Gas and liquid reflux is an important characteristic of distillation.
The company provides experimental, pilot-scale and small-scale production of distillation columns, batch distillation, continuous distillation, atmospheric distillation, vacuum distillation and other operations.2. Structure And Characteristics
2.1 Tower internals: bulk packing, shaped wire mesh packing, variable cross-section sieve plate assembly.
2.2 Various reboilers: kettle type, external circulation evaporator type, internal circulation type, scraper film evaporator type, etc.3. Practical Application
3.1 Concentration and purification of bio ethanol and methanol as alternative fuels.
3.2 Improve the quality of wine, retain the texture and aroma of wine and minimize harmful substances.
3.3 Refined flavoring extracts, including natural and synthetic flavors.
3.4 Recycling of solvents in the electronics industry to reduce pollutant handling capacity.4. Providing Different Scale Distillation Units
4.1 Distillation column used in laboratory
4.2 Distillation unit for pilot / small-scale production
4.3 Continuous distillation, batch distillation and extractive distillation.5. Device Operation Auxiliary Equipment
5.1 Vacuum System
Vacuum pump and vacuum unit, the main components of the vacuum system are: liquid ring pump (water ring pump), rotary vane pump, diffusion pump, Roots pump, etc.5.2 Thermostatic Thermal Cycling Equipment
Select high performance imported or domestic hot oil (water) circulating devices according to project funds.5.3 Material Transfer Device
Multiple inlet and outlet modes6. PLC Automation Control Technology PLC, the so-called programmable controller, is simply a CPU, with several modules, module functions are mainly, analog or digital input and output, other functions such as counting. Use CPU to mount these modules to realize communication and control processing functions. Communication mode, processing mode, need to be implemented in the program, traffic can of course be variable or AI address.7. Standard Technical Parameter List Of Kettle TowerTypeHT-200HT-300HT-400HT-500HT-600HT-800Tower Diameter (mm)200300400500600800Tower Height (mm)600070007000700075007500Tower Volume (m3)64012201450230025003200Production Capacity (kg/h)45~5090~100150~160280~300420~440600~620Heating Area (m2)6.08.014182432Condensation Cooling Area (m2)10+215+320+536+550+870+10Packing FormStainless steel corrugated packingOutline size (m)Long2.32.52.63.03.54.2Wide0.70.81.01.21.41.8High7.37.5991014
8. Advantages of Distillation Technology
Yiwu Changyi Machinery Equipment Co., Ltd. has been following, digesting and absorbing the advanced distillation technology both at home and abroad for many years, and has mastered the most advanced distillation technology today.
The equipment, fittings, meters and valves used in the equipment are all made in China.
According to the characteristics of raw materials and customer requirements, design a reasonable process to achieve simple process, reliable control, energy-saving purposes;
Advanced industrial simulation technology (ASPEN), tower hydraulics design technology (KG-TOWER) and advanced heat exchanger design technology (HTRI) are used to design to ensure the reliability and accuracy of process and equipment design.
Adopting stainless steel wire mesh packing, the separation efficiency is high, the theoretical tray series is increased, the height of distillation tower is reduced, and the plant conditions are suitable.
The waste water at the bottom of the tower after distillation is used to preheat raw material alcohol to reduce heat consumption.
Micro-pressure (0.05 MPaG ~ 0.1 MPaG) operation is conducive to the discharge of wastewater after rectification, no longer set up a transport pump;
The condenser of rectification tower is set at low position, and partial distillate gas short-circuit control pressure-keeping technology is used to make the operation pressure of the whole system more stable.
Reboiler heating steam control using condensate flow control technology, so that the steam pressure into the reboiler is more stable, regulator size is smaller, low cost, the use of steam flow and tower temperature cascade control, distillation tower operation is more stable;
The system adopts DCS automatic control technology to ensure long-term stable and safe operation and product quality stability.Equilibrium data of alcohol-water phaseTemperatureLiquid fractionVapour phase fractionXXYYCETOHWATERETOHWATER100010195.50.0190.9810.170.83890.07210.92790.38910.610986.70.09660.90340.43750.562585.30.12380.87620.47040.529684.10.16610.83390.50890.491182.70.23370.76630.54450.455582.30.26080.73920.5580.44281.50.32730.67270.59260.407480.70.39650.60350.61220.387879.80.50790.49210.65640.343679.70.51980.48020.65990.340179.30.57320.42680.68410.315978.740.67630.32370.73850.261578.410.74720.25280.78150.218578.150.89430.10570.89430.1057780.9320.0680.92120.078877.80.96730.03270.94230.057777.51010
Alcohol Phase Equilibrium Diagram:
9. Type And Characteristic Data Of metal Wire Corrugated Packing metal orifice corrugated packing is a regular tower packing with wide efficiency and wide separation efficiency. Its comprehensive performance is connected with metal wire corrugated high efficiency tower packing, and then the loose packed tower packing. Its cost is far lower than that of metal wire wave spinning filler, and its resistance to clogging is much better than that of wire mesh filler. In general, wire mesh corrugated packing is suitable for vacuum distillation.
Note: The higher the number of theoretical boards, the higher the possible cost of fillers, do not need to pursue the highest number of theoretical boards fillers, according to actual needs.10. Type and characteristic data of corrugated metal wire mesh fillersTypeInclination Angle φ,specific surface area ,m2/m3Bulk densityρp kg/m3Theoretical plate number per meterSection height m (about ten plates divided into sections)Scope of applicationOperating pressure pa250(AX)302501252.5~35Precision distillation with few theoretical plates102~105500(BX)3050025053~4Vacuum distillation of thermosensitive refractory systems102~105700(CY)457003508~101.6Isotopic Mixture and Isomeric Mixture Separation5x103~105