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. Jan 26, 2015 this method was borrowed from both youtuber users nurdrage and uc235. Unit 1700 produces phthalic anhydride pa via the partial oxidation of. Pdf effect of phthalic anhydride loading on alkyd resins.
Design project energy balances and numerical methods. 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. 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. Course final report production of phthalic anhydride from oxylene prepared by. 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. The exact aggregate production volume is available for one year, 2011, in which 600 million pounds of phthalic anhydride was produced. Report on phthalic anhydride i prices i demand i imports i. Phthalic anhydride production we are continuing our evaluation of process alternatives for the production of phthalic anhydride via the catalytic oxidation of o xylene.
Global phthalic anhydride pa market size was estimated at usd 6. Asia is the largest consumer of phthalic anhydride for the production of plasticizers, accounting for about 61% of consumption. Phthalic anhydride is used in the manufacture of plasticizers additives to polymers to give them more flexibility and polyesters, among other applications. Homophthalic anhydride technical grade sigmaaldrich. 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. The increasing use of phthalate plasticizers in automotive manufacturing coupled growing automotive industry is expected to drive demand over the forecast period. Of the current production, 50 percent is used for plasticizers, 25 percent for alkyd resins, 20 percent for unsaturated polyester resins. Design of phthalic anhydride production process free download as pdf file. 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.
All structured data from the file and property namespaces is available under the creative commons cc0 license. The most common method for production of phthalic anhydride is by oxidation of oxylene. Feb, 2014 phthalic anhydride production posted in chemical process simulation. Phthalic anhydride pa has a key importance in the production of plasticizers, polyesters and resins. 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. Phthalic anhydride is obtained from oxidation of oxylene or naphthalene in presence of a catalyst usually a vanadiumtitanium pentoxide. 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. 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. The exact aggregate production volume is available for one year, 2011, in which 600 million pounds of phthalic anhydride was produced or imported. The other significant applications of phthalic anhydride include unsaturated polyester resins upr, alkyd resins, pigments and dyes among others. Chemical properties of phthalic anhydride cas 85449 download as pdf file download as excel file download as 2d mole file predict properties. The plant produces approximately 75,000 tonney of highpurity 99.
The components are ortho xylene,air, phthalic anhydride, maleic anhydride, water, carbon dioxide. Lee yonsei center for clean technology, yonsei university, seoul 120749, south korea. China is the worlds largest consumer of phthalic anhydride for phthalate plasticizers. Imports of phthalic anhydride from japan and russia. Phthalic anhydride production posted in chemical process simulation. The catalysis and reaction engineering group has finished preliminary research and is very. Synthesis and characterization of polyesters derived from. Two cases have been considered for the production of phthalic anhydride at different capacities and processes under a consistent u. Production hcc produces pa by orthoxylene based process using the latest technology that guarantees high purity product. 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. Oxidation of orthoxylene to phthalic anhydride using a. 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. Simulation and optimization of the production of phthalic.
Alkyd resins were cheap and can perform good properties depend on the modification. A novel route to produce phthalic anhydride by oxidation of. Us3720692a production of phthalic anhydride from phthalic. Phthalic anhydride containing materials are used in coatings applications for home appliances, automobiles, medical devices and furniture. Linking to a nonfederal website does not constitute an endorsement by cdc or any of its employees of the sponsors or the information and products presented on the website. When trying to use pr or sour pr, it was showing that it does not accept phthalic anhydride. Phthalic anhydride and derivatives market 2019 by global. Phthalic anhydride has another major use pdflib download in the production of polyester.
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. Production of plasticizer polymeric additive to increase flexibility and polyester is the one of the most important. Che 455 fall 2009 major 1 phthalic anhydride production. Phthalic anhydride is reacted with alcohols to produce phthalate ester plasticizers for synthetic resins and plastics. Phthalic anhydride chemical production and investment cost. 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. Phthalic anhydride itself is used as a monomer for synthetic resins such as glyptal, the alkyd resins, and the polyester resins. In addition, regional plants with no turnaround scheduled kept to lower operating rates during the quarter.
The design of a new, 100,000 metric tons per year, phthalic. 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. Unit 1700 produces phthalic anhydride pa via the partial oxidation of oxylene using air. Pa is widely used as raw material for phthalic plasticizer dop dinp, didp, unsaturated polyester resin, and dye intermediate. Chemical and physical properties of phthalic anhydride. The production of phthalic anhydride by the oxidation of tar. Pdf simulation and optimization of the production of phthalic. It was the first anhydride of a dicarboxylic acid to be used commercially. 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. Phthalic anhydride production chemical process simulation.
It is known that phthalic anhydride is obtained by vapourphase oxidation of alkylnaphthalenes and other polycyclic hydrocarbons. Consequently the production of phthalic anhydride from coaltar naphthalene oils was investigated. 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. Production of phthalic anhydride from biorenewables.
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. A novel route to produce phthalic anhydride by oxidation of oxylene with air over mesoporous vmomcm41 molecular sieves m. This route was later replaced by the catalytic vapour phase oxidation of naphthalene in air in the presence of a vanadium oxide. Phthalic anhydride is the organic compound with the formula c6h4co2o. Logistics services are available in the united states. Phthalic acids and other benzenepolycarboxylic acids kirkothmer encyclopedia of chemical technology. Introduction phthalic acid can be converted to phthalic anhydride by heating the acid above 180c. Material balances design project production of phthalic. Consumption of phthalic anhydride for unsaturated polyester resin production is expected to increase moderately in 201823, but growth also varies by region. The production of phthalic anhydride by the oxidation of.
Phthalic anhydride market global industry analysis, size. Asia is the largest consumer of phthalic anhydride for the production of plasticizers, accounting for twothirds of the phthalic anhydride consumed. Melt of phthalic anhydride containing a small amount of azeotroping agent is maintained at a temperature of from 160 to 200c. Production of phthalic anhydride from xylene slideshare. 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. In this study, commercial alkyd resins were blended with various proportions of phthalic anhydride and oil on solid. Oct 31, 2017 i make phthalic anhydride from phthalic acid by heating. 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. Materials phthalic acid, dibutyltin dilaurate 10 wt. How to make phthalic acid and phthalic anhydride youtube. Phthalic anhydride is a white lustrous needles solid that is slightly soluble in water.
Use of an overall emission factor for the phthalic anhydride production emissions. 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. Conversion of phthalic acid to phthalic anhydride august 10, 20 by magpie a. Flow sheet of phthalic anhydride production process via oxylene oxidation4. It has been suggested that exposure to phthalic anhydride. Phthalic anhydride pan production in the united states in 1972 was 0. The phthalic anhydride plant is an integral part of the iso 9001.
Pdf the main process to produce phthalic anhydride in the petrochemical plants is selective oxidation of oxylene within a fixed bed reactor. If you use quattro, the file you submit should be saved. 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. Phthalic acid is introduced into the melt, and an azeotropic mixture of water and azeotroping agent is withdrawn therefrom. Phthalic anhydride pa production and manufacturing process. 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. Production of maleic anhydride from oxidation of nbutane. In this video we will be extracting dehp from vinyl gloves, and then cleaving the ester bonds to form alcohols and phthalic acid. Phthalic anhydride irritates the eyes, skin and lungs. Reactors and separations design project phthalic anhydride. Phthalic anhydride, technical by bureau of indian standards. It can be used as phthalate plasticizers and alkyd resins for surface coatings while its smaller volume applications include pigments, dyes.
Phthalic acid and derivatives lorz major reference. 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. Proposed designation of phthalic anhydride as a highpriority. Over the long term, we are still considering changing to o xylene as the raw material. Exposure to phthalic anhydride may occur during the manufacture of phthalate derived products. Maleic anhydride and other oxidizable impurities % 0. Capital and production cost estimates are presented for such a recovery operation. Phthalic anhydride esters like dop, diop, dnp, didp etc.
Design of phthalic anhydride production process polyvinyl. Synthetic of phthalimides via the reaction of phthalic. Other uses for phthalic anhydride include the making of dye intermediates, pigments, engineering plastics, benzoic acid and phenolphthalein. Click here for information on selection of n, r, or p filters. Specification for phthalic anhydride, technical note. Our current customers are expecting an increase in demand for their product and have asked us to increase our production of phthalic anhydride. Pdf phthalic anhydride is the organic compound whose applications are mainly in the manufacture of phthalate. 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. World consumption of phthalic anhydride is forecasted to grow at an average annual rate of 2. 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.
Phthalic anhydride was first produced by the oxidation of naphthalene in concentrated sulphuric acid in the presence of mercury sulphate. Phthalic anhydride production facility background the operation of unit 700, phthalic anhydride facility, has been successfully scaled down by 50%. This legacy forms a strong foundation for continuous innovation and product improvement. Phthalic anhydride catalysts basf offers over 140 years experience in phthalic anhydride pa production and 120 years in pa catalysts research. Exposure to phthalic anhydride may occur during the manufacture of phthalatederived products. Cdc niosh pocket guide to chemical hazards phthalic. This white solid is an important industrial chemical, especially for the largescale production of plasticizers for plastics. Phthalic anhydride is manufactured from either oxylene or naphtalene. Phthalic pdfcreator 093gplghostscript exe windows 7 anhydride production. Files are available under licenses specified on their description page.
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. Preliminary calculations are done to be used later such as mass balance, density and molecular weight. 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. Furthermore, production cost estimates have been generated for the production of orthoxylene. Specifications for phthalic anhydride parameter value molecular formula c8h4o3 mol wt 148. Material balances design project production of phthalic anhydride. Apf 10 any particulate respirator equipped with an n95, r95, or p95 filter including n95, r95, and p95 filtering facepieces except quartermask respirators. Phthalic anhydride from either orthoxylene or naphthalene has a negative value for utilities as a result of a steam credit. 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. Phthalic anhydride is also used as an intermediate in the production of pigments and dyes, agricultural, pharmaceutical, and several other chemical products. Phthalic anhydride pa is the one of the most applicable within industry.
Proposed designation of phthalic anhydride as a high. Unlike most such conversions this happens with ease due to the formation of a 5membered ring. Pa phthalic anhydride introduction pa is white crystallike flakes at room temperature and transforms into clear colorless liquid at melting point. Phthalic anhydride is used in the manufacture of plasticizers additives to polymers to give. Phthalic anhydride from orthoxylene usgc, lurgibasf phthalic anhydride from naphthalene usgc, conventional process observations from economic analysis include. Hello there, i am trying to use an appropriate fluid package in hysys 7. The phthalic anhydride produced from this plant is used primarily as a plasticizer. Cdc niosh pocket guide to chemical hazards phthalic anhydride.
Material balances design project production of phthalic anhydride from oxylene. Mixtures of phthalic anhydride and anhydrous co2 explode violently if heated leaflet no. 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. Production volume of phthalic anhydride in 2015, as reported to epa during the 2016 cdr reporting period, was between 500 million and 750 million pounds. Phthalic anhydride is a principal commercial form of phthalic acid. Phthalic anhydride 1 free download as powerpoint presentation. Phthalic anhydride chemical production and investment. Jan 19, 2007 this page was last edited on 21 february 2016, at 00.
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. In 1995, global production of maleic anhydride was estimated at 1. This iris assessment for phthalic anhydride consists of hazard identification and doseresponse assessment data and provides support for epa risk management decisions. Making phthalic anhydride from phthalic acid youtube. Pdf production of maleic anhydride from oxidation of nbutane.
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