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27-04-2010· Maleic anhydride (MA) is produced commercially by the oxidation of benzene or butane. Although the butane-based process is considered to have superior economics and is the preferred route used by most producers, Lonza claims its fixed bed benzene route is competitive in low cost revamps and medium-size plants.
This feasibility study presents an analysis of Maleic Anhydride production from n-butane in the United States using a process similar to the one developed by Huntsman. In this process, maleic anhydride is produced by the partial oxidation reaction of n-butane with oxygen carried out in a fixed-bed reactor, using a vanadium–phosphorus oxide (VPO) catalyst supported on silica.
This report presents a cost analysis of Maleic Anhydride production from butane via partial oxidation process.The process examined is similar to the one owned by Huntsman.In this process, Maleic Anhydride is produced by the partial oxidation reaction of n-butane with oxygen carried out in a fixed-bed reactor. The reactor effluent is sent to a solvent-based recovery system for Maleic Anhydride ...
Maleic anhydride is a highly-versatile chemical intermediate used to produce unsaturated polyester resins (UPR), the primary ingredient in fiberglass reinforced resins used for marine and automotive applications, and in construction products like countertops, tubs and sinks.
Three fixed-bed processes, from Huntsman [14], Pantochim [15], and Scientific Design [16] are currently offered for license. Figure 1 Schematic flow diagram of the Huntsman fixed-bed maleic anhydride process (MA= maleic anhydride) [3]. Co-incident with the rapid development of the butane-based fixed-bed processes,
25-08-2017· The process of conversion of n-butane and benzene is through fixed bed, fluidized bed, and moving bed or catalyst bed at high temperatures. Maleic anhydride is …
Figure 8.2 Fixed-bed with solvent recovery maleic anhydride process flow (Huntsman) 65 Figure 9.1 Key steps in the polypropylene production process 82 Figure 11.1 Timelines for the public consultations on Authorisation applications and for the study (20132014)- 108
Maleic acid solution is next introduced into the column for dehydration and the resultant crude molten maleic anhydride accumulates in the still DEHYDRATOR/ OFFGAS REFINER AFTERCOOLER J RK&: v REFINED MALEIC ANHYDRIDE REACTOR N-BUTANE AIR 3 FIGURE - IO MALEIC ANHYDRIDE PROCESS FLOWSHEET. FIXED BED REACTOR WITH XYLENE DEHYDRATION.
second step is to isolate the maleic anhydride (MAN) formed, using dibutyl phthalate ester as the main solvent. This ester dissolves the acids as well as maleic anhydride (MAN), and the remaining gases are incinerated in a flare/vent system. The maleic anhydride (MAN) is then separated from the rich solvent and the lean solvent is recycled.
THE PROCESS. The following paragraphs, along with Figure 1, describe a process for producing MAN from n -butane. The process described is a fixed-bed technology similar to the one owned by Huntsman Corp. (Danbury, Conn.; ). Figure 2. There are several maleic anhydride production pathways. Reaction.
This feasibility study presents an analysis of Maleic Anhydride production from n-butane in the United States using a process similar to the one developed by Huntsman. In this process, maleic anhydride is produced by the partial oxidation reaction of n-butane with oxygen carried out in a fixed-bed reactor, using a vanadium–phosphorus oxide (VPO) catalyst supported on silica.
16-07-2000· The new facility will feature Huntsman's fixed-bed technology and catalyst, the sixth consecutive maleic anhydride plant in the world to use the process. "The maleic anhydride from this plant will allow us not only to continue serving the growing global needs of our maleic anhydride customers, but [it] will further establish that the preferred ...
The first commercial production of maleic anhydride with butane was started up by Monsanto Company(former Huntsman company) in 1975.Huntsman techniques mainly contain fixed-bed reactor,novel catalyst MarsV,organic solvent absorption and refining.There are over 10 sets of Huntsman facilities in the world.The product maleic anhydride facilities via Huntsman process in 2010 have a …
01-12-2015· The recovered stream from the bottom of the absorber column is sent to a solvent recovery column, in which MAN is recovered as the distillate. The MAN recovered in this step is mixed with the condensate from the reaction area and then sent to two purification steps for obtaining pure maleic anhydride.
(Page 1) This column describes a process for producing maleic anhydride from n-butane using a fixed-bed process similar to the one owned by Huntsman Corp.
09-03-2007· Huntsman is also the leading world licensor of maleic anhydride fixed bed butane technology, with licensees in Germany, Taiwan, Malaysia, Korea, China and Saudi Arabia.
06-06-2018· Through either process, essentially recovery of maleic anhydride is achieved. Non-condensables may be vented or incinerated depending on local regulations. Water, light ends and high-boiling impurities are separated in a series of drying, dehydration and fractionation steps to produce maleic anhydride product. Basic chemistry
The first commercial production of maleic anhydride with butane was started up by Monsanto Company (former Huntsman company) in 1975. Huntsman techniques mainly contain fixed-bed reactor, novel ...
18-10-2001· Manufacturing processes for maleic anhydride are described, including those using fixed- fluidized- and transport-bed technologies for selective oxidation of butane. A survey is given of catalyst developments through the end of 2000.
24-12-2020· The technology is basically a two-step process. In the first step, n-butane is oxidized in tubular fixed-bed reactors to produce maleic anhydride (MAN) and other gases, such as carbon dioxide and carbon monoxide as well as a certain amount of by …
Maleic Anhydride. This is an organic compound obtained by the transformation of Benzene or normal butane, both derived from oil, through the use of catalysts (catalytic oxidation process). Its production, initially based on the fixed bed technology from benzene, was supplemented by the fluidized bed from normal butane in the '90s.
Maleic Anhydride (MA) Production and Manufacturing Process Nov 05, 2007 Maleic anhydride (MA) is produced commercially by the oxidation of benzene or butane. Although the butane-based process is considered to have superior economics and is the preferred route used by most producers, Lonza claims its fixed bed benzene route is competitive in low cost revamps and medium-size plants.
Maleic Anhydride production process Technobell's Maleic Anhydride production process system consists of fixed bed reactor(s) with single or double salt layer circulation, continuous gas cooling, continuous product recovery systems by partial condensation and absorption, batch or continuous dehydrating and distillation/refining system and a continuous incinerator unit with steam turbine …
This report presents a cost analysis of Maleic Anhydride production from butane via partial oxidation process. The process examined is similar to the one owned by Huntsman. In this process, Maleic Anhydride is produced by the partial oxidation reaction of n-butane with oxygen carried out in a fixed-bed reactor. The reactor effluent is sent to a solvent-based recovery system for Maleic ...
06-06-2018· N-butane and air are fed to a fluid-bed catalytic reactor (1) to produce maleic anhydride. The fluid-bed reactor eliminates hot spots and permits operation at close to the stoichiometric reaction mixture. This results in a greatly reduced air rate relative to fixed-bed processes and translates into savings in investment and compressor power, and
Compared with butane-based fluidized-bed water absorption process technology, Huntsman fixed-bed maleic anhydride has evident advantages such as lower running expense, higher yield, and good ...
All Past Projects, Past Heavy Civil Projects, Past Process Plant Projects, Past Rail Road Projects Project Objective: Expansion of the Maleic Anhydride to 100 million pounds/year maleic anhydride plant using Huntsman's fixed-bed/solvent recovery technology.
Considerable research continues to focus on the maleic anhydride process. In this review we show that the effort appears to be justified by potentially significant improvements in process economics. SRI's maleic anhydride Process Economics Report, 46C, issued in October 1989, evaluated fixed bed and fluid bed reactor systems used to produce maleic anhydride (MAN) from n-butane.