Hiring – Mechanical Design Engineer

The worldwide production and consumption of essential oils and perfumes are increasing at rapid speed. The traditional technologies for extraction of essential oil processing are of great significance, but one cannot deny the fact that they do have significant drawbacks compared to the advanced extraction technique like CO2 Supercritical Extraction. Why are traditional methods of extraction not safe? The traditional methods of essential oil extraction are hydro-distillation or solvent extraction. The concern using the traditional methods is the losses of some volatile compounds, low extraction efficiency, degradation of unsaturated compounds through thermal or hydrolytic effects and toxic solvent residue in the extract. Disadvantages of Water and Steam Distillation Due to the low pressure of rising steam, oils of high-boiling range require a higher quantity of steam for vaporization -hence longer hours of distillation. The plant material becomes wet, which slows down distillation as the steam has to vaporize the water to allow it to condense further up the still. Oxygenated components such as phenols tend to dissolve in the still water, so their complete removal by distillation is not possible. As water distillation tends to be a small operation (operated by one or two persons), it takes a long time to accumulate much oil, so good quality oil is often mixed with lousy quality oil. The distillation process is treated as art by local distillers, who rarely try to optimize both oil yield and quality. Water distillation is a slower process than either water and steam distillation or direct steam distillation. What is the alternative solution to overcome solvent residue and toxic solvents? The conventional extraction process has limitations of solvent toxicity, presence of residual solvents in the final extract and even loss of heat-sensitive oils. The rapidly emerging Supercritical fluid extraction technology is attracting more global markets and more […]

Six Axis are Better than Three, Usually Six axis robots are the most widely integrated industrial robot at present! This is because the six degrees of freedom they offer deliver a near perfect, middle of the road combination of flexibility, strength, and reach for a majority of industrial operations [1]. Across the industrial world, the robot star is ascending. Robots continue their relentless march forward, handling lethal, tough, and repetitive tasks with effortless ease [2]. Superior controls have propelled robot user friendliness to unprecedentedly high levels [3]. Employing robots boost throughput, minimize cycle t imes, and remove bottlenecks [3]. Considering their fantastic applications, understanding the capabilities and limitations of different robot types is a worthwhile exercise. What works today may not hold good tomorrow. Even if an economical three-axis gantry robot addresses a manufacturer’s requirements at present, it may not deal effectively with the rising operational complexities of the future. This can happen for many reasons. For one, the simple manufacturing operation of the present day may evolve into a more intricate at a later date. Inspired by initial success, the manufacturer may diversify into more sophisticated projects wherein operations too get more convoluted by their very nature [4]. However, gantry robots have their own sets of advantages. They do a much better job when dealing with heavier loads across longer spans. Next, technicians can customize their features to a certain extent, the addition of a rotational axis to the arm being one such. The choice between six and three is, therefore, a more nuanced one. Features of Multi-Axis Robots Figure 1. Axes of a Six Axis Robot Arms of six axis robots can rotate along six diverse axes, thereby permitting the robot to move in six directions as described below: 1. Axis 1 (Vertical): Robot pedestal can rotate around […]

Among the different extraction techniques used, supercritical fluid extraction (SFE) is one of the oldest and the most used separation technique. The use of supercritical fluids in the extraction of volatile components has increased during the last two decades because of its higher efficiency compared to other extraction methods.Carbon dioxide (CO2) is the most widely used supercritical fluid. This is because CO2 is cheap, chemically inert, non-toxic, non-flammable and readily available at high purities and at