Glass continuous distillation unit
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Glass continuous distillation unit
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Product Overview
The glass continuous distillation experimental device is mainly used for laboratory small-scale and pilot scale research and simulation. The main body of the equipment consists of important parts such as the raw material tank, preheater, tower kettle reboiler, distillation tower, distillation head, tower top reflux tank, tower top receiving tank, tower bottom receiving tank, feed pump, reflux pump, extraction pump, PTFE valve and pipeline. This system has normal pressure or pressure reduction operation, and the sealing requirements of the entire device are relatively high during the pressure reduction operation. During the experimental operation, pressure fluctuations will affect the stability of the entire experiment. Therefore, the glass connection part of the system is all connected with ball mouth flanges and sealed with PTFE gaskets.
The operation process of continuous distillation is that the material in the raw material tank is fed into the distillation tower after the flow rate is set by the feed pump. The raw material liquid and the reflux liquid descending from the distillation section converge on the packing layer, overflow and descend along the packing, and finally flow into the reboiler. During operation, a portion of the liquid is continuously taken out from the reboiler through the extraction pump as the bottom product of the tower. Some of the liquid vaporizes and produces rising steam, which passes through the packing layer in sequence. Finally, it is fully condensed in the tower top condenser. Part of the cooled condensate flows back into the tower, while the other part returns to the tower top receiving tank through self flow. There are two reflux methods designed: one is to control the reflux/extraction ratio by setting the electromagnetic reflux ratio for a certain time, and the other is to use forced reflux. The condensed liquid at the top of the tower flows into the reflux tank by itself, and after setting the flow rate through the reflux pump, reflux is carried out. The distillation tower is balanced and stable, and after the sampling at the top of the tower is qualified, it is extracted through the extraction pump.
This device adopts PLC integrated control, and the automatic control system can achieve stable adjustment of PIC and TIC by viewing the process interface, browsing the stored historical process data, and accessing various operating parameter curves. It is equipped with multi-level key protection systems to ensure the safety of equipment and operators in the device system.
The design goal is to establish a high-quality and high-level experimental equipment platform for customers. The overall level of the device requires a high degree of automation, good data accuracy and repeatability, easy operation, safety and reliability, and the ability to operate stably for a long period of time.
Technical Parameters
Equipment material: high borosilicate 3.3 glass material;
Distillation tower diameter and tower height: design and selection based on customer processing capacity requirements;
The design temperature of the tower kettle is from room temperature to 250 ℃, using a circulating oil bath heating form. The tower body adopts an electric heat tracing insulation design, with a maximum temperature of 250 ℃;
Design pressure: 100Pa~101KPa;
Packing types: θ ring loose packing, glass spring packing, glass Rascal ring packing, triangular spiral packing, Bower ring packing, regular packing, etc;
Processing capacity: 25mL~200mL/min;
The tower top condenser is equipped with a chiller/ice machine, with a temperature range of -25 ℃ to room temperature.
Distillation tower depressurization operation requires stable and precise pressure control. The required vacuum degree can be automatically set according to customer needs, and the automatic vacuum system is independently developed by our company; The bottom and top of the tower are equipped with imported pressure sensors to achieve pressure monitoring and pressure drop display.
Feed pump/discharge pump: domestic/imported for customers to choose from.
The control system adopts a PLC integrated control system, which can be remotely operated by a computer to achieve automatic control, automatic adjustment operation, data acquisition and storage, and real-time online monitoring;
The key parts of the valve are customized with PTFE material, and all valves are non-standard customized.
The above parameters are for reference only, and specific technical requirements can be customized according to customer needs.
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