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——Design

Horizontal or vertical shell-and-tube heat exchanger or plate heat exchanger, with flash vessel/separator and circulation pump.

——Operation

The liquid is circulated through the heat exchanger by means of a circulation pump, where it is superheated at an elevated pressure, higher than its normal boiling pressure. When entering the separator, the pressure in the liquid is rapidly reduced resulting in some of the liquid being flashed, or rapidly boiled off.

Since liquid circulation is maintained, the flow velocity in the tubes and the liquid temperature can be controlled to suit the product requirements of the pre-selected temperature difference.

——Particular features

Less foul  – boiling/evaporation will not take place on the heating surfaces, but in the separator. Fouling due to incrustation and precipitation in the calandria is therefore minimised.

Optimised heat exchange surface  – flow velocity in the tubes determined by the circulation pump.

——Fields of application

Liquids with a high tendency for fouling, highly viscous liquids, as the high concentration step in multiple-effect evaporation plants.

Forced circulation evaporators are suited as crystallising evaporators for saline solutions.

Shanghai Dea chemical equipment Co.,Ltd

——We devote to design and develop the equipment of chemical separation and abstraction.

——We came from East China University of Science and Technology, which we long-term cooperated with later. And now, we serve for many famous universities, such as Tsinghua University , Sun Yat-sen University , etc.

——We provide equipment of distillation and extraction for the technicians in the area of chemical , medicine and food industry.

——We own senior engineers who have rich experience in chemical engineering.

——Our products can be used in lab-scale, pilot-scale experiments and small-scale production.

——The experimental results are more authentic by using our products thanks to the continuous operation during the course of the experiments or pilot-scale experiments.

——We repaire imputed equipments out-of-warranty for UIC,POPE,BUCHI in the past few years, which made us accumulating rich experience.

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We not only produce distillation equipment,

but also study distillation  process,improve the distillation equipment.

Services Dea provide

Technology Consulting
We provide technology consulting and plan designing, please contact with us if you are not satisfied the extraction separation effect with your products.

Feasibility studies and process development
As we all known, testing and process development of customers’ products plays an important role in the whole project. And an experimental result may always achieve better than the complex theoretical calculations. We have a process development team which has rich experience, we experiment new product and face new challenge everyday. Our Purpose: To conduct initial research and development process, to prove the feasibility of separation; to provide design data for industrial production systems; to select the appropriate equipment and optimize the design of the equipment by material properties for each experiment.

Provide experimental equipment
For the separation of mixtures, especially those who are not mature mixture used in the separation plant, a simple theoretical calculation is not enough. Testing and process development for product is crucial, experiment is always the fastest and most effective way to determine the feasibility of separate products, which is better than the results of complex theoretical calculations. Development and design processes are usually done in the secondary laboratory test equipment with a lot of experimentation. Thus, we have established an independent laboratory which is continuous improved.

Process Configuration Design
Maybe you only want to buy the main equipment instead of engineering procurement and construction out of financial condition. Meanwhile, maybe a complete and detailed engineering design plan will trouble you. And we can provide you the chemical plant engineering design for you on base of our long-period experience in engineering design and rigorous style of work,

After-sale service
Equipment supply, installment and moderating.
Operator training.

Our equipment has been assembled and tested prior to shipping finished, so it is a whole package, which can be used directly after unpacked. Please measure the size of the door in order to handle the equipment to the right position. For self-assembly, please inform in advance.