Even fresh solvents sometimes do not meet the requirements for the desired purity or target concentration and can also be fine-purified and concentrated in solvent recovery systems. There are various distillation methods that deliver different levels of performance, e.g. packed columns with automatic reflux control for particularly high separation efficiency or vacuum distillation for sensitive media. Typical solvents include acetone, ethanol, toluene, n-hexane, or ethyl acetate. There is a wide range of distillable solvents.
Speed of Sound Measurement in Solvent Distillation
Application
It is important that the recovered solvents are in no way inferior in quality to the original materials in order to ensure consistent product quality in the subsequent process. Ideally, the recycled material is hardly distinguishable from virgin material. The clean distillate can be returned directly to the production process.
Monitoring the distillate concentration during processing is an important factor in minimizing processing costs and increasing solvent availability. Disposing of solvents (or other chemicals) that have been contaminated during the production process is a cost-intensive procedure. In most cases, solvents are easily and economically processed and recovered in-house. This saves costs through reduced purchasing of fresh produce, minimization of storage, less handling effort and significantly lower disposal and transport costs.
Installation
The LiquiSonic® immersion sensors can be installed directly in the pipeline at the desired points in the system. The installation location must be selected so that the sensor is in complete contact with the process liquid. Installation in riser pipes or, alternatively, from below in partially filled pipes is therefore recommended. The compact sensor design without seals and without moving parts ensures long system operating times. The LiquiSonic® Controller 30 can be connected to up to 4 sensors. This makes it possible to monitor several measuring points at the same time. With the help of the LiquiSonic® Lab Systems alternatively, spot measurements of samples in the laboratory can also be carried out in a matter of seconds.
Possible measuring range (depending on the respective liquid):
Concentration range: 0 to 100 wt%
Temperature range: -20 to 140 °C
Customer Benefits
The inline measurement system LiquiSonic® enables online monitoring of the current status of the purified medium by means of speed of sound. This ensures stable product quality. Complex
sampling and laboratory analysis are eliminated. The robust sensor design without moving parts and without seals guarantees reliable long-term inlet analysis and monitoring. If required, the sensor parts in contact with the media are made of special materials such as Hastelloy C2000. The sensors are available with ATEX or FM certification.
Benefits for the User at a Glance:
- Monitor product quality directly in the process
- Suitable for hazardous areas
- Optimization of processing cycles
- Regular laboratory testing becomes unnecessary
- Minimize error potential and risk for employees
Organic or aqueous solvents are used in many branches of the chemical industry. After use, they can either be disposed of at high cost or purified in distillation systems and then reused.
