Exposure to phthalic anhydride may occur during the manufacture of phthalate derived products. Capital and production cost estimates are presented for such a recovery operation. Introduction this report represents detailed calculations of design and sizing for the distillation column t 701 of the production of phthalic anhydride from xylene process. The design of a new, 100,000 metric tons per year, phthalic. Synthesis and characterization of polyesters derived from. Phthalic anhydride production chemical process simulation. Energy balances and numerical methods production of phthalic anhydride from oxylene the subject of this project is a process for manufacturing 75,000 metric tonsyear of a liquid containing 99. Material balances design project production of phthalic. How to make phthalic acid and phthalic anhydride youtube. It was the first anhydride of a dicarboxylic acid to be used commercially. Phthalic anhydride is a principal commercial form of phthalic acid. Phthalic anhydride, technical by bureau of indian standards. Our current customers are expecting an increase in demand for their product and have asked us to increase our production of phthalic anhydride. General electric laboratories carried out a series of intensive investigations on the glycerol phthalic anhydride reactions leading to the production of useful resins of the heatconvertible type as summarized in the work of callahan 10, friberg 11, arsem 12, dawson, and howell 14.
Exposure to phthalic anhydride may occur during the manufacture of phthalatederived products. If you use quattro, the file you submit should be saved. Materials phthalic acid, dibutyltin dilaurate 10 wt. Recovery of byproduct maleic anhydride in phthalic anhydride. Us3112324a us2147a us214760a us3112324a us 3112324 a us3112324 a us 3112324a us 2147 a us2147 a us 2147a us 214760 a us214760 a us 214760a us 3112324 a us3112324 a us 3112324a authority us united states prior art keywords naphthalene phthalic anhydride zone vapors column prior art date 196001 legal status the legal status is an assumption and is not a legal conclusion.
Specifications for phthalic anhydride parameter value molecular formula c8h4o3 mol wt 148. Reports emphasize significant developments in process technology for phthalic anhydride that have potential implications for the chemical and energy industries customer logins obtain the data you need to make the most informed decisions by accessing our extensive portfolio of. Pdf simulation and optimization of the production of phthalic. The components are ortho xylene,air, phthalic anhydride, maleic anhydride, water, carbon dioxide. For the purpose of the table, the latest version of the indian standards including the amendments issued thereof, as published and notified by the bureau from time to time, shall be applicable from the date of notification. Mixtures of phthalic anhydride and anhydrous co2 explode violently if heated leaflet no. Material balances design project production of phthalic anhydride from oxylene. Us2105911a us54507531a us2105911a us 2105911 a us2105911 a us 2105911a us 54507531 a us54507531 a us 54507531a us 2105911 a us2105911 a us 2105911a authority us united states prior art keywords phthalic anhydride sulfuric acid catalytic impure distillate prior art date 19260121 legal status the legal status is an assumption and is not a legal conclusion. Making phthalic anhydride from phthalic acid youtube.
Phthalic anhydride from orthoxylene usgc, lurgibasf phthalic anhydride from naphthalene usgc, conventional process observations from economic analysis include. Its production is based on fossil feedstocks and is expected to grow up to 5 mt per year by 2018, as such its market would be affected by petroleum depletion concerns. Phthalic pdfcreator 093gplghostscript exe windows 7 anhydride production. Alkyd resins were cheap and can perform good properties depend on the modification. Report on phthalic anhydride i prices i demand i imports i. Jan 19, 2007 this page was last edited on 21 february 2016, at 00. Phthalic anhydride pa production and manufacturing process. Phthalic anhydride is manufactured from either oxylene or naphtalene. Phthalic anhydride pa supply was tight due to a heavy wave of plant turnarounds, affecting more than 300,000 tonnesyear of production capacity across asia.
Oxidation of orthoxylene to phthalic anhydride using a. Synthetic of phthalimides via the reaction of phthalic. Phthalic anhydride production we are continuing our evaluation of process alternatives for the production of phthalic anhydride via the catalytic oxidation of o xylene. Phthalic anhydride market global industry analysis, size. Of the current production, 50 percent is used for plasticizers, 25 percent for alkyd resins, 20 percent for unsaturated polyester resins. Production of maleic anhydride background maleic anhydride is a versatile chemical intermediate used to make unsaturated polyester resins, lube oil additives, alkyd resins, and a variety of other products. Phthalic anhydride chemical production and investment cost. One way to offset the cost incurred in the interest of pollution control is to use the scrubber system for pollution control and to recover maleic anhydride from the scrubber solution for use or sale. This route was later replaced by the catalytic vapour phase oxidation of naphthalene in air in the presence of a vanadium oxide. Production hcc produces pa by orthoxylene based process using the latest technology that guarantees high purity product. World consumption of phthalic anhydride is forecasted to grow at an average annual rate of 2. All structured data from the file and property namespaces is available under the creative commons cc0 license. In this study, commercial alkyd resins were blended with various proportions of phthalic anhydride and oil on solid. Phthalic anhydride is an important chemical intermediate in the plastics industry from which are derived numerous phthalate esters that function as plasticizers in synthetic resins.
Phthalic anhydride is a white lustrous needles solid that is slightly soluble in water. Phthalic anhydride production facility background the operation of unit 700, phthalic anhydride facility, has been successfully scaled down by 50%. Two cases have been considered for the production of phthalic anhydride at different capacities and processes under a consistent u. Homophthalic anhydride technical grade sigmaaldrich. Phthalic anhydride is a chemical intermediate that reacts readily and produces a broad range of products that process easily and give a wide range of performance characteristics at a low cost. Design project energy balances and numerical methods. Phthalic anhydride trends phthalic anhydride downstream application areas, such as construction, automotive and marine industries have been severely affected by the financial crisis, especially in europe and north america some plasticisers producers are looking at production of nonphthalate plasticisers, where pa is not needed as a. Cdc niosh pocket guide to chemical hazards phthalic anhydride. Us3720692a production of phthalic anhydride from phthalic. The exact aggregate production volume is available for one year, 2011, in which 600 million pounds of phthalic anhydride was produced or imported. It is a colourless solid, variously referred as phthalic anhydride flakes, phthalic anhydride 98% min. It is known that phthalic anhydride is obtained by vapourphase oxidation of alkylnaphthalenes and other polycyclic hydrocarbons.
Pdf the main process to produce phthalic anhydride in the petrochemical plants is selective oxidation of oxylene within a fixed bed reactor. Production of maleic anhydride from oxidation of nbutane. Phthalic anhydride has another major use pdflib download in the production of polyester. Imports of phthalic anhydride from japan and russia. Asia is the largest consumer of phthalic anhydride for the production of plasticizers, accounting for about 61% of consumption. Use of an overall emission factor for the phthalic anhydride production emissions. Pdf effect of phthalic anhydride loading on alkyd resins. Reports emphasize significant developments in process technology for phthalic anhydride that have potential implications for the chemical and energy industries customer logins obtain the data you need to make the most informed decisions by accessing our extensive portfolio of information, analytics, and expertise. Phthalic anhydride is used in the manufacture of plasticizers additives to polymers to give them more flexibility and polyesters, among other applications. Design of phthalic anhydride production process free download as pdf file. Phthalic anhydride irritates the eyes, skin and lungs. Course final report production of phthalic anhydride from oxylene prepared by.
Chemical and physical properties of phthalic anhydride. When a vanadium pentoxidepotassium sulphatesilica catalyst was used no marked deterioration of catalyst was observed in an experiment with naphthalene oil over a period of 28 hours. The asian markets are forecast to see growth in demand, particularly china, india, and southeast asia, while consumption for unsaturated polyester resin is declining in japan. Oct 31, 2017 i make phthalic anhydride from phthalic acid by heating. Che 455 fall 2009 major 1 phthalic anhydride production. Simulation and optimization of the production of phthalic. Unit 1700 produces phthalic anhydride pa via the partial oxidation of oxylene using air. The production of phthalic anhydride by the oxidation of.
Phthalic anhydride is obtained from oxidation of oxylene or naphthalene in presence of a catalyst usually a vanadiumtitanium pentoxide. Flow sheet of phthalic anhydride production process via oxylene oxidation4. Feb, 2014 phthalic anhydride production posted in chemical process simulation. Simulation and optimization of the production of phthalic anhydride from oxylene abhideep singhai, dipankar kalita, ashwin nenmini utkarsh maheshwari. Production of maleic anhydride chemical engineering. Global phthalic anhydride pa market size was estimated at usd 6. Phthalic anhydride is reacted with alcohols to produce phthalate ester plasticizers for synthetic resins and plastics.
The exact aggregate production volume is available for one year, 2011, in which 600 million pounds of phthalic anhydride was produced. Production of phthalic anhydride from xylene slideshare. Jan 26, 2015 this method was borrowed from both youtuber users nurdrage and uc235. Consequently the production of phthalic anhydride from coaltar naphthalene oils was investigated.
The increasing use of phthalate plasticizers in automotive manufacturing coupled growing automotive industry is expected to drive demand over the forecast period. Phthalic anhydride is the organic compound with the formula c6h4co2o. Melt of phthalic anhydride containing a small amount of azeotroping agent is maintained at a temperature of from 160 to 200c. Production of plasticizer polymeric additive to increase flexibility and polyester is the one of the most important. Phthalic anhydride is also used as an intermediate in the production of pigments and dyes, agricultural, pharmaceutical, and several other chemical products. Chemical properties of phthalic anhydride cas 85449 download as pdf file download as excel file download as 2d mole file predict properties.
The catalysis and reaction engineering group has finished preliminary research and is very. Phthalic acid is introduced into the melt, and an azeotropic mixture of water and azeotroping agent is withdrawn therefrom. Advantages of basf as a phthalic anhydride catalyst supplier from oxylene to phthalic anhydride reaction mechanism 6 basf offers over 5 years experience in phthalic anhydride pa production and 110 years in catalyst research. A novel route to produce phthalic anhydride by oxidation of oxylene with air over mesoporous vmomcm41 molecular sieves m. Files are available under licenses specified on their description page. Phthalic anhydride pa is the one of the most applicable within industry. Phthalic anhydride containing materials are used in coatings applications for home appliances, automobiles, medical devices and furniture. Phthalic anhydride from either orthoxylene or naphthalene has a negative value for utilities as a result of a steam credit. The other significant applications of phthalic anhydride include unsaturated polyester resins upr, alkyd resins, pigments and dyes among others. Lee yonsei center for clean technology, yonsei university, seoul 120749, south korea.
Phthalic anhydride pan production in the united states in 1972 was 0. Over the long term, we are still considering changing to o xylene as the raw material. Other uses for phthalic anhydride include the making of dye intermediates, pigments, engineering plastics, benzoic acid and phenolphthalein. Asia is the largest consumer of phthalic anhydride for the production of plasticizers, accounting for twothirds of the phthalic anhydride consumed. Proposed designation of phthalic anhydride as a highpriority. Specification for phthalic anhydride, technical note. Phthalic anhydride was first produced by the oxidation of naphthalene in concentrated sulphuric acid in the presence of mercury sulphate. In this video we will be extracting dehp from vinyl gloves, and then cleaving the ester bonds to form alcohols and phthalic acid. Key application of phthalic anhydride includes production of phthalate plasticizers for making polyvinyl chloride pvc, which is further used on a large scale in construction and automobile industry. The production of phthalic anhydride by the oxidation of tar. Cdc niosh pocket guide to chemical hazards phthalic. The most common method for production of phthalic anhydride is by oxidation of oxylene.
Phthalic anhydride, also referred as pan or pa, is an anhydride of phthalic acid, and is commercially produced by catalytic oxidation of orthoxylene or naphthalene. Click here for information on selection of n, r, or p filters. Product name phthalic anhydride flakes chemical name cas no phthalic anhydride 85449 other means of identification pure substancemixture substance recommended use of the chemical and restrictions on use application chemical intermediate uses advised against not identified. Apf 10 any particulate respirator equipped with an n95, r95, or p95 filter including n95, r95, and p95 filtering facepieces except quartermask respirators. China is the worlds largest consumer of phthalic anhydride for phthalate plasticizers. Phthalic anhydride trends phthalic anhydride downstream application areas, such as construction, automotive and marine industries have been severely affected by the financial crisis, especially in europe and north america some plasticisers producers are looking at production of nonphthalate plasticisers, where pa is not needed as a feedstock. Phthalic acid and derivatives lorz major reference. Phthalic anhydride esters like dop, diop, dnp, didp etc. Conversion of phthalic acid to phthalic anhydride august 10, 20 by magpie a. Phthalic anhydride and derivatives market 2019 by global. When trying to use pr or sour pr, it was showing that it does not accept phthalic anhydride.
Synthetic of phthalimides via the reaction of phthalic anhydride with amines and evaluating of its biological and anti corrosion activity khuluod fahed hamak chemistry department, college of science damascus university, damascus, syria corres. Proposed designation of phthalic anhydride as a high. The plant produces approximately 75,000 tonney of highpurity 99. Preliminary calculations are done to be used later such as mass balance, density and molecular weight. Reactors and separations design project phthalic anhydride. It has been suggested that exposure to phthalic anhydride. Design of phthalic anhydride production process polyvinyl. In addition, regional plants with no turnaround scheduled kept to lower operating rates during the quarter.
Maleic anhydride and other oxidizable impurities % 0. Phthalic anhydride catalysts basf offers over 140 years experience in phthalic anhydride pa production and 120 years in pa catalysts research. It can be used as phthalate plasticizers and alkyd resins for surface coatings while its smaller volume applications include pigments, dyes. Unlike most such conversions this happens with ease due to the formation of a 5membered ring. In 1995, global production of maleic anhydride was estimated at 1.
Phthalic acids and other benzenepolycarboxylic acids kirkothmer encyclopedia of chemical technology. Production of phthalic anhydride from biorenewables. Pa phthalic anhydride introduction pa is white crystallike flakes at room temperature and transforms into clear colorless liquid at melting point. A novel route to produce phthalic anhydride by oxidation of. Therefore, the production of polyesters from glycerol and phthalic acid should produce new materials for the preparation of desalination membranes and as modifiers for polyurethane foams. Press release phthalic anhydride and derivatives market 2019 by global industry trends, sales revenue, industry growth, development status, top leaders, future plans and opportunity assessment 2025. Phthalic anhydride pa has a key importance in the production of plasticizers, polyesters and resins. Consumption of phthalic anhydride for unsaturated polyester resin production is expected to increase moderately in 201823, but growth also varies by region. This legacy forms a strong foundation for continuous innovation and product improvement. Phthalic anhydride itself is used as a monomer for synthetic resins such as glyptal, the alkyd resins, and the polyester resins.
Material balances design project production of phthalic anhydride. This iris assessment for phthalic anhydride consists of hazard identification and doseresponse assessment data and provides support for epa risk management decisions. Logistics services are available in the united states. The phthalic anhydride produced from this plant is used primarily as a plasticizer. Major 1 phthalic anhydride production background you work for an operating company that produces, among other products, phthalic anhydride via the partial oxidation of oxylene in a fixedbed catalytic reactor. Unit 1700 produces phthalic anhydride pa via the partial oxidation of. Furthermore, production cost estimates have been generated for the production of orthoxylene. This white solid is an important industrial chemical, especially for the largescale production of plasticizers for plastics. Table i 29 compares the costs of phthalic anhydride produced from naphthalene in both fixed and fluidized beds with that produced from axylene in a fixed bed reactor.
Hello there, i am trying to use an appropriate fluid package in hysys 7. Phthalic anhydride is used in the manufacture of plasticizers additives to polymers to give. Links with this icon indicate that you are leaving the cdc website the centers for disease control and prevention cdc cannot attest to the accuracy of a nonfederal website. Pdf production of maleic anhydride from oxidation of nbutane. Pdf phthalic anhydride is the organic compound whose applications are mainly in the manufacture of phthalate. Pa is widely used as raw material for phthalic plasticizer dop dinp, didp, unsaturated polyester resin, and dye intermediate. Phthalic anhydride chemical production and investment. The phthalic anhydride plant is an integral part of the iso 9001. Phthalic anhydride production posted in chemical process simulation. Phthalic anhydride 1 free download as powerpoint presentation. A process according to claim 6, wherein said portion of azeotroping agent is recycled to a liquid phase preparation of phthalic acid from oxylene and resulting phthalic acid is introduced with associated unconverted oxylene into the phthalic anhydride melt. Introduction phthalic acid can be converted to phthalic anhydride by heating the acid above 180c.
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