1、Simulation and Optimization of Separation of Vinyl Acetate by Dividing
Based on the analysis of the conventional two column distillation separation process, the separation process scheme of vinyl acetate partition tower was designed, calculated, and optimized...
2、Energy and Capital Cost Reduction in Ester
This paper proposes a reactive distillation with a prefractionation column (RDPFC) system to valorize the waste stream from the poly (vinyl alcohol) industry (30.7 wt % MeAc and 69.3 wt % MeOH) to recover high-purity MeOH and valuable n -butyl acetate (BuAc).
3、(PDF) Vinyl Acetate Monomer Process
1. Integration of vinyl acetate and ethylene glycol manufacturing through the intermediate 1,2 - diacetoxyethane. 2. Hydrogenative carbonylation of methyl acetate to 1,1 - diacetoxyethane...
4、Production of Vinyl Acetate Ester via Calcium Carbide Acetylene Process
Based on Aspen Plus process simulation, the purification stage of the production of vinyl acetate by 450000 tons of calcium carbide acetylene process was optimized.The main equipment involved in the process are degassing tower, deacetaldehyde tower, crude separation tower, vinyl acetate refining tower, acetic acid distillation column ...
5、Optimization of methanol–vinyl acetate azeotrope separation process
Given the critical role that the concentration distribution in the column plays in the design and operation of distillation columns, the mass fraction distribution of the gas and liquid phases in each theoretical plate in the low-pressure and high-pressure columns was studied in depth.
Method and device for preparing vinyl acetate through reactive distillation
technical field [0001] The invention belongs to the field of vinyl acetate production, in particular to a method and device for preparing vinyl acetate through reactive distillation.
Simulation and optimization of extractive distillation for
Extraction distillation is an effective method for separating near-boiling substances. Using Aspen Plus, it employed n-butyl acetate as the extractant to simulate the extraction distillation separation of vinyl acetate and ethyl acetate.
Purification Process Design of Vinyl Acetate Based on Aspen Plus
The unit operation involved mainly includes general distillation, azeotropic distillation, distillation with side line extraction, absorption, extraction and so on.
10 Vinyl Acetate Monomer Process
Reaction Kinetics The manufacturing of vinyl acetate by the oxyacetylation of ethylene is described by the following stoichiometric reaction: C 2 H 4 CH
VINYL LAURATE
The solution is heated under reflux for 3 hours, then 0.83 g. of sodium acetate trihydrate is added to neutralize the sulfuric acid. The excess vinyl acetate is recovered by distillation at atmospheric pressure (vapor temperature about 70–80°) until the pot temperature reaches 125° (Note 5).
On the vast stage of industrial production, every piece of equipment embodies the soul of a process, and distillation columns are indispensable roles in chemical manufacturing. Like a precision clock, these structures use complex designs to separate and purify chemicals, providing foundational materials for industrial output. Among them, the vinyl acetate ester distillation column is a critical component, directly impacting production efficiency, product quality, and safety.
The vinyl acetate ester distillation column is designed to isolate vinyl acetate ester—a vital organic chemical raw material—from liquid mixtures. This substance is widely used in industries such as plastics, rubber, and coatings, making its purity and quality crucial. The column’s design prioritizes efficient and stable separation to meet these demands.
Engineers meticulously craft the column’s structure. Typically cylindrical, its interior features vertical baffles dividing the space into compartments, each assigned specific separation tasks. To enhance efficiency, these baffles are equipped with packing materials selected based on the substances being processed. For example, porous glass or ceramic packings might be used for volatile components, while heat-resistant stainless steel or other materials suit thermally sensitive substances.
During operation, temperature and pressure control are paramount. These parameters determine the column’s efficiency and product integrity. Excessive temperatures risk overreaction within the column, compromising stability, while inadequate pressure may hinder gas flow and separation effectiveness. Precision in managing these factors ensures optimal performance.
Operator expertise profoundly impacts the column’s functionality. Skilled personnel must understand chemical properties, reaction dynamics under varying conditions, and techniques to adjust internal parameters. Experienced technicians adeptly manage reflux at the column’s top and product withdrawal at the bottom, balancing quality and productivity.
Maintenance and inspection are equally vital for long-term reliability. Regular checks identify issues like packing blockages or corrosion, extending the equipment’s lifespan and minimizing production disruptions. Retired packing and trays require thorough cleaning and inspection before reuse to ensure peak condition.
More than a technology-intensive tool, the vinyl acetate ester distillation column symbolizes the aspirations of chemical engineering. Through continuous innovation and refined management, this “silent force” will play an even greater role in advancing industrial progress and societal development.
