Vinyl acetate is an industrial chemical that is produced in large amounts in the united states. Vinyl acetate monomer vam production and manufacturing. Ethylenevinyl acetate copolymers having a gel content of not more than 0. Vinyl acetate monomer vam production and manufacturing process. The process features a cooled tubular reactor, both gas and liquid recycle streams, two absorbers, and two distillation columns, one involving heterogeneous azeotropic distillation. Learn more about polyvinyl acetate in this article. Vinyl acetate monomer safety data sheet international vinyl.
Vinyl acetate occurs as residual monomer in homo and copolymers based on vinyl acetate and in products or formulations based on these polymers. Vinyl acetate monomer market size global industry report. Process for the production of ethylenevinyl acetate. Polyvinyl acetate, a synthetic resin prepared by the polymerization of vinyl acetate. Vinyl acetate monomer vam is a high volume building block chemical used in the manufacture of polyvinyl acetate or vinyl acetate copolymers. Vinyl acetate, also known as vinyl acetate monomer or vam, has a chemical formula of c4h4o2. The production of vinyl acetate monomer as a coproduct from the noncatalytic cracking of soybean oil.
An exemplary vinyl acetate production process 100 is shown in fig. As vinyl acetate is widely used in the production of paints and coatings, adhesives, and packaging materials. Vinyl acetate monomer vam production and manufacturing process 20100428 acetylenebased technology was used first in the commercial production of vam with the gas phase process preferred to the liquid phase reaction. Relationship between latex properties and polymerization startup temperature. Vinyl acetate is a colorless, flammable liquid with low solubility in water rhum 1970.
It is very flammable and may be ignited by heat, sparks, or flames. In the same year, asiapacific accounted for almost 55% of the worlds total vam production capacity. Simulation of vinyl acetate production linkedin slideshare. Aug 07, 2011 the vinyl acetate monomer vam process presents several challenging design problems because of the many design optimization variables and several important constraints. Forms explosive vinyl acetate ozonide on contact with ozone. Vinyl acetate is an organic compound with the formula ch 3 co 2 chch 2. A process is disclosed for the production of vinyl acetate where a mixture of ethylene, acetic acid, and oxygen is reacted in the presence of a catalyst to produce a product mixture of vinyl acetate, ethylene, carbon dioxide, acetic acid, water, ethyl acetate, and ethylene glycol diacetate. The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst. It is manufactured by reacting ethylene with sodium acetate bisesi 2001. An industrial designcontrol study for the vinyl acetate. It is a clear, colorless liquid with a sweet, fruity smell.
Since vinyl alcohol is highly unstable with respect to acetaldehyde, the preparation of vinyl acetate is more complex than the synthesis of other acetate esters. Currently, the manufacturing process most widely used to produce vinyl acetate is the vapor phase ethylene process, an oxidative reaction in which ethylene is. Vinyl acetate 108054 hazard summary vinyl acetate is primarily used as a monomer in the production of polyvinyl acetate and polyvinyl alcohol. It is polymerized with freeradical initiators, primarily in emulsion processes, and forms the polymer phase in waterbased paints. Three raw materials, ethylene c 2 h 4, oxygen o 2, and acetic acid hac, are converted into the vinyl acetate vac product. Vinyl acetate is used to make other industrial chemicals. With china being a major player in these markets, the demand for vinyl acetate is expected to grow during the forecast period. Vinyl acetate market growth, trends, and forecasts 2020. Water h 2 o and carbon dioxide co 2 are byproducts. Acute shortterm inhalation exposure of workers to vinyl acetate has resulted in eye irritation and upper respiratory tract irritation. Vinyl acetate production from the acetoxylation of ethylene was developed and commercialized starting with the liquidphase process. In 2012, the world annual production capacity of vinyl acetate vam stood at more than 7 million tonnes.
The worldwide production capacity of vinyl acetate was estimated at 6,969,000 tonnesyear in 2007, with most capacity concentrated in the united states 1,585,000 all in texas. The manufacturing of vinyl acetate by the oxyacetylation of ethylene is described by the following stoichiometric reaction. This monomer is used principally in the production of polyvinyl acetate pvac and other vinyl acetate copolymers. Production cost report vame11a,vame21a xxx vinyl acetate vinyl acetate vam vinyl acetate monomer vinyl acetate a. A simplified process scheme for the production of vinyl acetate monomer from a fatty acid or triacyl glyceridebased oil via noncatalytic cracking. Polymerised vinyl acetate products can contain up to 1% of. Pdf vinyl acetate formation in the reaction of acetylene. Disclosed is a method for controlling a vinyl acetate production process. Hence it is concluded that the entire production volume of vam is used up for the manufacture of. Vinyl acetate is also copolymerized as a minor raw material for. These polymers are the base for many industrial and consumer products as well as for other polymers.
Sep 24, 2015 1 introduction the production of vinyl acetate from ethylene is an 11step process which utilises the process of a stoichiometric reactor, distillation column, flash phase separators and a decanter. Vinyl acetate from ethylene, acetic acid and oxygen industrial plant. These chemicals are used mainly to make glues for the packaging. When handled properly, vam can be stored, transported and otherwise managed safely. The chinese government has increased public spending on transportation infrastructure. Production process using ethylene, acetic acid and oxygen. The largest user of acetic acid is the vinyl acetate monomer vam manufacturing industry. These products, synthesized via polymerization of vinyl acetate, accounted for 75. Ii our company versalis the petrochemical subsidiary of eni is a dynamic player in its industry sector facing the multifold market needs through different skills. Mar 23, 2020 the worldwide production capacity of vinyl acetate was estimated at 6,969,000 tonnesyear in 2007, with most capacity concentrated in the united states 1,585,000 all in texas, china 1,261,000, japan 725,000 and taiwan 650,000. This colorless liquid is the precursor to polyvinyl acetate, an important industrial polymer.
The main production method for vinyl acetate monomer is the reaction of ethylene and acetic acid with oxygen, in the presence of a palladium catalyst. Plant design for the production of vinyl acetate acetic. The process the following paragraphs describe a typical vaporphase oxidation process for vam production from acetic. More importantly, the plant model provides a new benchmark problem. Plant design for the production of vinyl acetate free download as powerpoint presentation. Oct 10, 2019 this statistic shows the production volume of vinyl acetate in the united states from 1990 to 2018. This product passed through a cracking tower which in result gave as products acetic acid and vinyl acetate. The focus of this report is on recent improvements in technologies for vinyl acetate production and recovery since pep report 15b, vinyl acetate was issued in 1996. Ethylenevinyl acetate copolymer does not have an acid odor if it is not thermally degraded. Eu risk assessment vinyl acetate summary, 2008 8 copolymers. Because of equipment corrosion associated with the liquidphase process, a vaporphase acetoxylation technology was developed and commercialized in the 1970s. Vinyl acetate monomer vam is used for the production of polymer emulsions of various types, which are base resins for waterbased paints, adhesives, paper coatings and textile finishes. Mathematical modeling of the synthesis process of vinyl acetate.
Global market is moderately consolidated with top four companies accounting for just over 50% of total market. Some of these derivatives include polyvinyl acetate polymers and ethylenevinyl acetate copolymers. The production of vinyl acetate monomer vam represents one of the largest industries with a growth es timate of a near 2. Ethylene vinyl acetate copolymer does not have an acid odor if it is not thermally degraded. Sigmaaldrich offers a number of vinyl acetate products. It is a colorless liquid with a sweet, fruity smell, soluble in most organic solvents, but only slightly soluble in water. Vinyl acetate from ethylene, acetic acid and oxygen. Vinyl acetate production process 100 comprises reaction zone 102 and separation zone 104. Acetylenebased technology was used first in the commercial production of vam with the gas phase process preferred to the liquid phase reaction. Some of these derivatives include polyvinyl acetate polymers and ethylene vinyl acetate copolymers. Pdf vinyl acetate from ethylene, acetic acid and oxygen. The production of vinyl acetate monomer as a coproduct from. Ethylene vinyl acetate an overview sciencedirect topics.
Plant design for the production of vinyl acetate monomer having capacity kton per year. Vinyl acetate is a particularly interesting substrate, since, as mentioned earlier, it gives 2acetoxypropanal, a precursor in the strecker synthesis of threonine. We offer the following regional ethylene vinyl acetate analysis and news coverage to keep you informed of factors and developments affecting prices in the ethylene vinyl acetate marketplace price reporting. The monomer vinyl acetate ch 2 cho 2 cch 3 is prepared from ethylene by reaction with oxygen and acetic acid over a palladium catalyst. Vam, vinyl acetate monomer, ethenyl acetate is an organic compound, an important vinyl ester, used in the manufacture of many polymers and resins.
As a practical illustration, a vinyl acetate monomer plant was considered. This statistic shows the production volume of vinyl acetate in the united states from 1990 to 2018. This plant model enables the users to experience realistic plant operation, since it reflects the real plant characteristics and practical problems on the basis of experienced practitioners opinions. The method comprises reacting ethylene, acetic acid, and an oxygencontaining gas in the presence of a catalyst in a reactor to produce vinyl acetate, measuring the concentration of a component involved in or associated with the reaction andor any of the subsequent steps by raman spectroscopic analysis, and adjusting. Ethylene has now become the preferred feedstock with the gas phase route used due problems of corrosion and byproduct. Vam can be polymerized in mass, solution, suspension or emulsion. Vinyl acetate monomer vam market 2019 with top countries. Ethylene vinyl acetate news and market information products from icis. Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va. Undergoes violent or explosive reactions with 2aminoethanol, chlorosulfonic acid, ethylenediamine, mineral acids hydrochloric acid, hydrofluoric acid, nitric acid, sulfuric acid, oleum, and peroxides lewis, 3rd ed. Vinyl acetate monomer vam is a highvolume building block chemical used in the manufacture of polyvinyl acetate or vinyl acetate copolymers. Vinyl acetate formation in the reaction of acetylene with acetic acid catalyzed by zinc acetate supported on porous carbon spheres article pdf available. Proprietary process technology eva ethylene vinylacetate copolymers high pressure tubular autoclave technology.
Vinyl acetate is produced for the manufacture of polyvinyl acetate and a variety of. To maintain the reacting power of the mixed catalyst at the level of profitability of the entire production, the va manufacturing process is to be realized with a low. The product mixture contains both a gaseous phase and a liquid phase, which are separated. Pdf the production of vinyl acetate monomer as a coproduct. Abstract a rigorous dynamic plant model of a vinyl acetate monomer vam production was developed. This report presents a comparative evaluation of commercial processes for producing vinyl acetate. The impact of gf31 on polyvinyl acetate pvac dispersion physicochemical and production parameters were determined. Firstly combining their separate feeds in a mixer to create a mixture creates a mixture of oxygen, ethylene and acetic acid. First, data was generated from the simulation of vinyl acetate monomer process. The vam is recovered by condensation and scrubbing and is then purified by distillation. Process for producing vinyl acetate celanese international. Semicontinuous vinyl acetate vac radical emulsion polymerization in water with 3methacryloxypropyltrimethoxysilane gf31 comonomer was performed using protective colloid pva and surfaceactive compound.
Vinyl acetate is a colorless, flammable liquid that also has a characteristic smell that can quickly become irritating. In one embodiment, process control for the vinyl acetate production process is accomplished by controlling the process conditions of the reaction zone. Vinyl acetate current prices petrochemicals prices database. However, as ethylene became more plentiful in the early 50s, commercial processes were developed to produce vinyl chloride from chlorine and ethylene via edc, namely, the balanced ethylene route. Mar 06, 2014 in one embodiment, process control for the vinyl acetate production process is accomplished by controlling the process conditions of the reaction zone. Proprietary process technology eva ethylene vinylacetate. Vinyl acetate is the acetate ester of vinyl alcohol. In its most important application, polyvinyl acetate serves as the filmforming ingredient in waterbased latex paints. Vinyl acetate monomer safety data sheet international vinyl acetate company safety data sheet according to regulation ec no. The aim was to develop a suitable control model and then its performance was analyzed.
Polyvinyl acetate is a precursor of polyvinilyc alcohol and polyvinyl acetate resins pva. Vam is an important vinyl ester, primarily used in the production of polymers and copolymers for coatings, paints and sealants, as well as for binders and in textile and paper processing. The process is centered on the reaction between ethylene, oxygen and acetic acid in order to produce vinyl acetate and water. The primary use for vinyl acetate is as a monomer in the production of polyvinyl acetate and polyvinyl alcohol iarc 1986. Increasing demand for emerging economies of asia pacific is projected to compel the manufacturers to increase their production capacities. Design and control of a modified vinyl acetate monomer. Vinyl acetate monomer chemical production and investment. Vam is the basis of white glue, laminating wallboard, and latex paint. Vinyl acetate is produced for the manufacture of polyvinyl acetate and a variety of copolymers. The production of vinyl acetate monomer as a coproduct. Pdf vinyl acetate from ethylene, acetic acid and oxygen industrial.
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