Solvent distillers - Import export

The productivity of Chloroprene rubber is due to the high bond strength obtained through mercaptan modification and chloroprene monomer through emulsion polymerization. The notable uses of chloroprene rubber in making adhesives is through the preparation of resin solution and the preparation of adhesives. The preparation of resin solutions involves the use of mixed solvents, phenolic resin, distilled water, and active magnesium oxide for a chelate reaction at normal room temperature. The resin solution in the output could be stocked up for future uses.

We manufacture solvent storage and solvent separator tanks, which can be flexibly designed according to your company’s needs. We offer corrosion-resistant, long-lasting, efficient solvent recovery, distillation and storage solutions for your stainless steel solvent separator tank and solvent storage tank needs

De Smet Engineers & Contractors has been involved in all steps of the production of vegetable oils from oilseeds crushing for the construction of Edible Oils Plants; in this article you will find a more detailed understanding about the process of vegetable oil extraction: First step: Preparation of the oil containing material prior to solvent extraction Cleaning and Drying The plant feedstock must be cleaned so that foreign matters are removed. This applies particularly to sand/silicate and iron which may damage the preparation plant equipment. For some seeds or for some processes the incoming material moisture must be controlled and adjusted for better efficiency of subsequent operations. Mechanical preparation Most of raw materials needs to broken to reduce the particle size to ensure proper cooking and flaking. They are then heated in cooking / conditioning equipment and their moisture further controlled in addition to be softened before the next mechanical operations. After cooking, heated grits are flaked so that the oil cells are broken and the oil more readily available for further solvent extraction or mechanical pressing. Pressing Oilseeds containing above 20 to 25% (rapeseed, sunflower seeds, cottonseeds...) are generally pressed mechanically in order to extract most or part of the oil available in the feedstock. This operation is done through full pressing for maximum oil recovery leaving up to 5 to 10% in the final cake which is marketed as such or through a low pressure pre-pressing operation producing a cake with higher residual oil content which is then recovered in the solvent extraction plant. Dehulling Oil extraction plants produce a solid finished product in addition to the extracted oil; this product (cake or meal) is normally used as an important component for animal feed recipes. Depending on the meal destination, its protein content often needs to be increased and its fibre content minimized. Such characteristics are generally achieved through decortication or dehulling operations that separate the outer part of the feedstock before extracting the oil. Second step: Solvent extraction of the material suitably prepared Extraction In the solvent extractor, solids (Flakes from the flaking machines or cakes from the pre-presses) are conveyed through the equipment while a mixture of hexane and oil (miscella) is sprayed counter-current. The extractor produces therefore deoiled solids containing solvent and miscella. Desolventization Deoiled solids coming out of the extractor are conveyed to a dedicated equipment that completely removes the remaining solvent while preserving the meal quality: the desolventizer. This apparatus is usually combined with additional sections for drying and cooling the meal to the required storage and market parameters. Miscella distillation Solvent contained in the miscella is completely removed under vacuum and optimum temperature for preserving oil quality. The solvent from the distillation as well as the one removed at meal desolventization stage are then recycled to the extractor. Solvent recovery Since the air entering the process together with material fed to the extractor is laden with solvent when it is removed from the plant it first pass through a specially designed absorption column to limit emission to an acceptable level. Meal treatment The extracted meal is often subject for further treatment, including grinding to obtain the required granulometry or pelletizing to reduce its volume during transport.

Compact hermetically sealed low emission solvent degreaser for use with Trichloroethylene, Perchloroethylene, modified and aliphatic hydrocarbons. Designed to meet solvent emissions directive SED requirement. - Built-in solvent recycling by distillation and automatic carbon regeneration. - Great process flexibility with possibility to combine stages according to specific needs. - PLC controlled for process flexibility and ease of use. - Repeatable cleaning results. - Ultrasonic agitation and sprays for excellent cleaning results - Clean solvent and pure vapour are used for each cycle. - Quick and efficient vacuum drying, even on complex-shaped parts with blind holes. - Internal automated rocking and rotation of components. - Easy to maintain. - Compact-size, small footprint. - Short cycle times resulting in high productivity. - Solvent handling to facilitate the safe filling and draining of the process fluids. - Etc. ** Click for more **

For precision component cleaning applications particularly, validated processes. - Designed to safely use all low-flashpoint solvent cleaning media including IPA, Cyclohexane & Acetone. - Does not require Class 1 Div 1 area – can operate in standard production environment. - All machines manufactured in UK. - All stainless-steel construction – traceability certification available. - Specialised fabrication available if required. - Pickled, passivated and electro polished to extend operational life. - Heated tanks have direct contact tube heaters for energy efficiency and longevity. - Drop-in ultrasonic transducers and heaters ensure minimal downtime and extend tank life. - Multi-frequency ultrasonic transducers. All ultrasonics used sweep frequency technology. - On board distillation ensures clean solvent continuously - Small footprint designed for clean room applications - Etc. ** Click for more **

The instrument has a capacity of 6 litres of solvent mixture with a throughput of up to 1 l / hr (e.g. when recovering Xylene). A microcomputer controller holds up to 100 programs as well as monitoring the distillation process for normal and safe operation. Variable reflux ratios and equilibrium times are possible so that the operator has maximum flexibility to design a program for optimal efficiency. Other capacities are available upon request.