An Efficient Mass Transfer Separation Bulk Packing Structure
A bulk packing and high-efficiency technology, applied in chemical/physical/physicochemical processes, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as small flux, low mass transfer efficiency, and difficulty in manufacturing and installation
Active Publication Date: 2021-05-04
BEIJING UNIV OF CHEM TECH
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Problems solved by technology
[0003] However, the existing bulk packing has problems such as large pressure drop, small flux, and low mass transfer efficiency. As a result, the separation requirements can only be achieved by increasing the height of the tower, which often results in too high equipment for the rectification tower, which not only improves the manufacturing and installation Difficulty, at the same time, the stability of the equipment is difficult to meet the requirements
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Embodiment example
[0035] Implementation case: Bulk fillers were replaced for methanol and water experimental equipment in the laboratory. The laboratory used a rectification tower small test equipment with a tower diameter of 50mm and a packing height of 1000mm to conduct methanol and water separation experiments.
[0036] When using ceramic Raschig rings as packing before replacing, adopting mass fraction is the mixture of methanol and water of 50% as feed, can obtain the methanol product that mass fraction is 90% at tower top; Adopt the same volume of bulk packing of the present invention ( Specifications are 2mm * 2mm) to replace while ensuring the same feed state, the methanol product with a mass fraction of 94% can be obtained at the top of the tower.
[0037] The tower kettle of the experimental equipment is heated by electric heating, and the different electric energy consumption is recorded by the instrument. Compared with ceramic Raschig rings as fillers, when the bulk fillers of the p...
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Abstract
The invention discloses a high-efficiency mass transfer and separation bulk packing structure, which comprises a bulk packing body with a multi-layer structure tightly fitted, the ring wall of the bulk packing body has corrugated angle groups; the lower part of the bulk packing body is bell-shaped; the bulk packing body Three passages with the same cross-sectional area are formed inside. The present invention has the characteristics of low pressure drop, large specific surface area, low liquid holding capacity and large void ratio, and corrugated angle groups are arranged on the ring wall surface to increase disturbance, reduce the double film thickness of vapor phase and liquid phase mass transfer resistance, and improve mass transfer coefficient and separation efficiency, at the same time adopt the bell mouth shape to increase the stability of bulk packing and the regularity of natural accumulation, and at the same time average the internal channel area to ensure the smooth flow of gas and liquid.
Description
technical field [0001] The invention relates to the technical field of chemical separation process and equipment, and more specifically relates to a bulk packing structure for efficient mass transfer separation. Background technique [0002] In the petrochemical, chemical pharmaceutical and fine chemical industries, rectification tower equipment accounts for more than 60% of the separation equipment. In the rectification process, the size of the rectification tower equipment needs to be calculated according to the processing capacity, physical properties, product purity and other requirements. If the processing capacity is small, the designed rectification tower often has a small diameter. As the core internal part of rectification, packing is extremely difficult to produce and install, and the cost rises sharply. Bulk packing is needed to solve the above problems. [0003] However, the existing bulk packing has problems such as large pressure drop, small flux, and low mass...
Claims
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IPC IPC(8): B01J19/30
CPCB01J19/30B01J2219/30296B01J2219/30223B01J2219/30226B01J2219/30276B01J2219/30292B01J2219/30483B01J19/32B01J2219/3221B01J2219/32237
Inventor 李群生
Owner BEIJING UNIV OF CHEM TECH