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Swirl cut type super gravity distillation column distillation equipment patented, Patent No.: ZL201220066902.1
2020-09-05

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Zhejiang Qianjiang Weian drying equipment Co., Ltd., as vice president of China drying industry association, is specialized in designing and producing drying equipment. Its self-developed distillation column combining design and manufacture, has been applied in many clients' turnkey projects. It has obtained national patents for many times. On October 10 2019, the company's distillation equipment series swirl cut type high gravity distillation column won the national utility model patent, patent number: zl201220066902.1.


Compared with the traditional plate column and packed column, the high gravity distillation column has the characteristics of low equipment height, high thermal efficiency (less heat dissipation and small reflux ratio), excellent operation performance, large operation flexibility, convenient start-up and shutdown, low comprehensive energy consumption, small equipment volume, safety and reliability. The equipment has the advantages of short residence time, less liquid holding capacity, strong anti blocking ability, and simple operation It has the characteristics of convenient maintenance, safe production and low management cost. It is in line with GMP standard.


This equipment is widely used in the rectification and recovery of the following organic solvents: methanol, formaldehyde, toluene, ethanol, ethylene glycol, acetone, ethyl acetate, acetonitrile, tetrahydrofuran, dimethyl sulfoxide, methylal, n-butanol, dichloromethane, silicone ether, cyclohexane, isobutane, isopropanol, glacial acetic acid, acetic anhydride, DMF, DMSO, DMAA, DMDA, etc. The equipment has been industrialized in the fields of API, pharmaceutical intermediate, fine chemical industry, biodiesel, environmental protection, wine making and other industries.


The specific advantages of this equipment are shown in the following aspects:


1. Low equipment height, low civil engineering cost and small floor area

In the high gravity environment, the gas-liquid two-phase has a very large contact area and collision probability, the micro mixing and mass transfer process is greatly enhanced, and the mass transfer efficiency can be increased by 10 times, so that the huge column becomes a high gravity distillation column with a height of less than 2 meters. The equipment with 1.2m high fuselage is equivalent to a commonly used distillation column with a height of 15 m.


Due to the advantages of high gravity distillation column height, compared with the traditional distillation column, the civil engineering cost required for the purpose of distillation is greatly reduced in the whole design scheme. The height of the traditional distillation column is often more than 10 meters or even higher. The installation requirements are high, and the working platform for operators is required. Therefore, the civil engineering cost is relatively high. However, the height of single equipment of high gravity distillation tower is only more than 2 meters (including the height of base), and the installation requirements are relatively low, so the civil engineering requirements are relatively simple, and the civil engineering cost is greatly reduced. The traditional distillation column generally needs a base and special support, which covers a large area, while the high gravity distillation column only needs about 1 ~ 2 square meters of floor space. In addition, due to the high performance of the traditional distillation column, there are high requirements for wind protection, shock protection and lightning protection. Since the equipment can be installed indoors, there is no need for special protective measures in the above aspects. At the same time, due to the high tower equipment, it needs to go through certain approval procedures, and this equipment, like other indoor equipment, can be installed and operated after the approval of the overall project, without special approval procedures, thus saving more preliminary costs.


2. Energy saving

Due to its small volume and small heat dissipation area, the high gravity distillation column can save about 5% ~ 10% energy than the traditional distillation column under the same conditions.


3. Easy to operate

Compared with the traditional distillation column, the high gravity distillation column is much easier to operate due to its low height and small volume. The operation of tower equipment requires operators to often go to the top of the tower to observe the material situation, which brings certain hidden danger to the safety production. At the same time, it takes a long time from the start-up of the tower equipment to the design components on the top of the tower, and the shortest time to reach the balance is not less than 30 minutes. The operators must observe the operation on site during this period. The operation and observation of the equipment is very convenient. At the same time, because the time from starting up to balancing is short, generally it only takes more than ten minutes. The operator does not need to observe the equipment for a long time, but can also take into account the operation of other equipment, so as to reduce the labor intensity of the operator and save the labor cost, and also ensure the safety of production.


4. Convenient maintenance and low maintenance cost

In general, the traditional distillation column needs to be overhauled every half a year, and the packing needs to be cleaned every year, and each overhaul takes several days; while the high gravity distillation tower only needs to replace the mechanical seal and other vulnerable parts every half a year according to the national standards, and each replacement only takes a few hours, so the operation is simple and the maintenance is not often convenient.


5. Liquid waste discharge

Under the same conditions, the waste liquid discharged from the general column is about 3%, while the high gravity distillation column can meet the requirements of customers and environmental protection, and the discharge can be controlled below 0.5%, which has good environmental protection effect and good social and enterprise economic benefits.


Because of its advantages over tower equipment in many aspects mentioned above, using high gravity distillation column equipment instead of traditional tower equipment can save steel resources and prolong the service life of earth resources for social development; for the development of enterprises, it can save site and space resources, reduce pollution emission, improve product quality, improve operation and management mode, and reduce production labor intensity To increase the safety of production. High gravity bed has a very broad application prospect in environmental protection, medicine, chemical industry and other industries, and is being used by more and more users.


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