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Phthalic production capacities

Re Design Specifications for Phthalic Anhydride Production in a Fixed Bed Reactor A proposed expansion of the corporation s vinyl plastics operation will require a commitment by the company to produce its own plasticizer. Our long range planning group has suggested that 6 million pounds per year of new phthalic anhydride capacity would meet our internal needs and projected increases in demand from current customers. [Pg.554]

Phthalic anhydride is a significant commercial product. Its main area of application is in synthetic resins and plasticizers. The production capacity worldwide was about 3.62 million t in 1997. [Pg.424]

Chronologically, the production of o-xylene from mixed Cg aromatics was the first of these separations. In 1945, the Oronite Chemical Co. produced 85 to 90% purity o-xylene by fractionation from crude xylenes (1). The c-xylene product is oxidized for the production of phthalic anhydride in a vapor phase reaction over a vanadium-base catalyst. By 1947 Oronite provided 5% of the United States production capacity for phthalic anhydride by this process (2). [Pg.308]

The worldwide production capacity of phthalic anhydride was about 30.10 t/year in 1984 and 3-2.HJ t/jear in 1986, with the following distribution ... [Pg.317]

Prices are also affected by available production capacity, recent plant outages etc. Surplus production capacity has been available in the recent past for several additives and for intermediates such as phthalic anhydride and epichlorohydrin. At the end of 2002, the two main US producers of sebacic acid, which is a precursor of specialised aliphatic plasticisers, both withdrew from the market in the face of competition from cheap Chinese imports, although another company entered the field instead. Melamine prices have reached 1300 euros/tonne in Europe, although they are lower in Asia. Capacity has fluctuated because of plant problems but considerable new capacity is being developed. [Pg.178]

One of the most important selective oxidation processes in the production of chemicals is the side chain oxidation of alkyl aromatics, which are then further reacted to higher value products that end up in a variety of polymer compositions and specialised chemicals.The largest oxyfunctionalised aromatic products with regard to world production are terephthalic acid, phthalic anhydride and benzoic acid which are produced worldwide with capacities of >30,000, 5,000 and 500 kt a respectively. Worldwide production capacities for benzaldehyde and pyromel-litic dianhydride do not rise above 50 kt a In smaller capacities as specialty chemicals for the pharmaceutical industry, halo-substituted oxyfunctionalized aromatics are also produced. Of the aforementioned products, phthalic anhydride and pyromellitic dianhydride are produced from gas-phase processes using V20s-Ti02 catalysts and a liquid-phase alternative process does not appear immediately desirable. On the other hand, terephtalic and benzoic acids, and benzaldehyde are... [Pg.660]

The earliest mention of benzoic acid appears in the sixteenth century. The substance received its name from gum bezoin, the plant from whose resin it was first derived. This plant was for a long time the only source for this acid. In the nineteenth century, benzoic acid was synthesized from coal tar. Today it is manufactured by treating molten phthalic anhydride with steam in the presence of a zinc oxide catalyst, by the hydrolysis of benzo-trichloride, or by the oxidation of toluene with nitric acid or sodium dichromate or with air in the presence of a transition metal salt catalyst. The estimated global production capacity for this acid is about 600,000 tonnes per year. [Pg.170]

The terephthalate plasticizer DEHTP, first commercialized around 1975 as Eastman DOTP, is very similar in structure to DEHP except that the substitution of the aromatic ring is at the 1,4 position versus the 1,2 position of the aromatic ring. The structure of DEHTP is also shown in Pig. 24.1. Terephthalates are prepared by the esterification of terephthaUc acid or by the transesterification of dimethyl terephthalate with aliphatic alcohols such as butanol or 2-ethyl hexanol. Although DEHTP can be produced from terephthalic acid in a traditional DEHP esterification plant with minor modifications to the process, this process is not as efficient as the esterification of phthalic anhydride and manufacturing capacity reductions of >50% are realized. Transesterification of dimethyl terephthalate is a much faster reaction. However, this process will require significant process modifications to a traditional DEHP manufacturing unit. One benefit with this chemistry is that it does not lead to a significant drop in production capacity. The main problem with this route is the limited availability of dimethyl terephthalate in many locations. [Pg.541]

In the United States there are five production plants owned by BASF. ExxonMobil, Koppers, Stepan Chemical, and Sterling Chemicals all have phthalic anhydride production plants of approximately equal size. These US plants represented a combined productive capacity of about 1.2 billion pounds annually for phthalic anhydride. However, since the demand for phthalate plasticizers is significantly decreasing, this capacity will probably also decrease. [Pg.486]

An aromatic compound which is employed along with glycerol in the production of alkyd resins is phthalic anhydride. The conventional process for the manufacture of this chemical has been from the catalytic oxidation of coal tar naphthalene, and annual production of the anhydride in recent years has been around 150,000,000 pounds. In 1946 production was started (4) in a plant of the Oronite Chemical Co. at Richmond, Calif., to produce phthalic anhydride by the oxidation of o-xylene produced in a hydroformer unit of the adjacent Standard Oil Co. of California refinery. The Oronite plant was reported to have a design capacity of 7,000,000 to 8,000,000 pounds per year of 99.7% pure phthalic anhydride. [Pg.323]

The manufacture of phthalic anhydride (world installed capacity ca. 4.4 Mt/a) has several points of similarity to that of maleic anhydride in that there are two alternative feedstocks and a large amount of heat is released. The first process, introduced by BASF at the end of 19 century, was based on the liquid phase oxidation of naphthalene catalyzed by mercury salts. It was later replaced by the cleaner gas phase process, carried out over vanadium and molybdenum oxides. Naphthalene was supplied by coal tar distillation and was used exclusively until the end of 1950s when u-xylene, of petrochemical origin, became an abundantly available feedstock (Equation 36). A few production units however can use either feedstock, taking advantage of price fluctuations in coke plants (naphthalene) and in refineries (u-xylene). [Pg.59]

This Downs type of mercury-controlled catalytic converter has been largely responsible for the expanded production of phthalic anhydride which has occurred since this country started making its own dye intermediates at the close of the war because of the operating economics made possible in the oxidation. A boiling mercury converter of approximately the same overall dimensions as the first-mentioned air-injector type has a capacity of from 1600 to 1800 pounds of phthalic anhydride per 24 hours and is so automatic in operation that a single operator can manage as many as eight of them. [Pg.456]

Today the installed hydroformylation capacity worldwide is more than 7.5 Mio tons per year (Baerns et al., 2006). The most important feedstock is propene, with the products n-butyraldehyde and iso-butyraldehyde (Scheme 6.14.3). The most important single product from propene hydroformylation is 2-ethyl-l-hexanol (>50% of the n-butyraldehyde production), the aldol condensation product obtained from n-butanal, which is an important plasticizer alcohol. After esterification with phthalic anhydride, dioctyl phthalates plasticizers are obtained that are used mainly in poly(vinyl chloride) plastics. [Pg.717]

It is also one of China s largest PVC producers. The company has annual capacities of 120 000 tonnes of LLDPE, 140 tonnes LDPE, 140 000 tonnes of HDPE, 70 000 tonnes of PP, 36 000 tonnes of PS and PVC recently expanded to 600 000 tonnes. Qilu has also expanded its annual ethylene capacity from 450 000 tonnes to 600 000 tonnes. Major products include ethylene, propylene, HDPE, LDPE, LLDPE, PVC, PP, hydrochloric acid, caustic soda, sulphur, commercial liquefied chlorine, ammonia, commercial liquid ammonia, urea, butadiene, pure benzene, toluene, p-xylene, styrene, refined methanol, butanol, octanol, maleic anhydride, phthalic anhydride, catalysts for petrochemical products, catalysts for natural gas one-stage reforming, other catalysts, dibutyl phthalate and dioctyl phthalate. [Pg.100]

The company has annual capacities of 180 000 tonnes of HDPE and 160 000 tonnes of PP. Major products include PE, PP, ethylene glycol, refined p-phthalic add, EO, benzene, p-xylene, o-xylene, acetic acid and hardened asphalt. YPC has a joint venture with BASF to produce polystyrene with an annual capacity of 100 000 tonnes. The joint venture, Yangtze-BASF Styrenics Co, is one of the largest polystyrene producers in China. [Pg.105]

With 5000 employees, the company has 465 000 tonnes per year ethylene capacity and 31 300 tonnes per year PP capacity. Major products include sodium cyanide, ethylene, LDPE, propylene, PP, butadiene, neat benzene, p-xylene, ethylene glycol, diethylene glycol, formaldehyde, acetaldehyde, glacial acetic acid, refined p-phthalic acid, dimethyl phthalate, acrylonitrile, polyester, poly inyl alcohol and polyester film base. [Pg.124]


See other pages where Phthalic production capacities is mentioned: [Pg.258]    [Pg.487]    [Pg.15]    [Pg.540]    [Pg.662]    [Pg.68]    [Pg.719]    [Pg.307]    [Pg.435]    [Pg.552]    [Pg.257]    [Pg.977]    [Pg.17]    [Pg.1118]    [Pg.35]    [Pg.102]    [Pg.271]   
See also in sourсe #XX -- [ Pg.482 , Pg.484 ]




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