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Phenol is a desirable product, annually drawing $11.5 billion globally. Presently, most phenol on a global scale is produced by a multi-step cumene process that also produces equimolar amounts of acetone. This reaction is dangerous, energy intensive, and leaves phenol prices closely tied to those of acetone. The process proposed in this report ...
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128. The chemistry of the cumene process features the desired reaction of benzene with propylene to form cumene and the undesirable reaction of cumene with propylene to form p-diisopropylbenzene. Both reactions are irreversible. Since the second has a higher activation energy than the first, low reactor temperatures improve selectivity …
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The next largest use for phenol is in the production of phenol–formaldehyde (PF) resins. PF resins are used primarily in wood adhesives, for example, for bonding the layers of plies in exterior plywood. Since its commercialization in the early 1950s, the cumene hydroperoxide (CHP) process has become the dominant technology for phenol …
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PHENOL. This is the fourth in a series of reports on the manufacture of phenol. The report contains preliminary process designs and cost estimates for the cumene peroxidation process, the. water to form cyclohexanol, and dehydrogenating the cyclohexanol to produce phenol.
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Systematic top-down economic plantwide control of the cumene process. J. Process Control (2013) ... A Material Flow Analysis (MFA)-based potential analysis of eco-efficiency indicators of China's cement and cement-based materials industry ... Microchannel process for phenol production via the cleavage of cumene …
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Figure 22.1 Flow sheet of Phenol production from Cumene. ... The process of producing phenol from cumene and toluene involves several steps. Initially, cumene is oxidized to cumene hydroperoxide (CHP) using air or oxygen. Then, CHP is cleaved into phenol and acetone through acid-catalyzed decomposition. Toluene is also oxidized to benzyl methyl ...
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Cumene (99.0 wt% analytical purity) and cumene hydroperoxide (CHP, 80.0–85.0 wt% analytical purity) were used through the study, which were purchased from Shanghai Macklin Biochemical Co., Ltd. O 2 gas (99.999%) was purchased from Beijing Haipu Gas Co., Ltd Fig. 2.a displays the schematic diagram of experimental microfluidic …
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2. Process Studied The cumene process is described in Turton et al.1 in a fair amount of detail. The basic flowsheet is presented, and the Figure 1. Txy diagram: (a) for benzene/cumene; (b) for cumene/PDIB. kinetics of the reactions are given.
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The modified flow sheet of the optimised process was prepared which gives the values of all the optimised variables in detail. Keywords: Simulation, Optimization, Cumene, Benzene, distillation ...
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Recent process design innovations have been commercialized for the cumene hydroperoxide route that remains the process of choice for the production of phenol. All of this effort has been directed at improving yield, process economics/costs, and process safety for the preparation of phenol as a key intermediate for the growing bis-phenol A …
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Since phenol is made from cumene, a grass-roots cumene plant would also be necessary. Given your experience in trouble- ... 2. a clear, complete, labeled process flow diagram of your optimized process including all equipment and the location of all major control loops 3. a clear stream flow table including T, P, total flowrate in kg/hr and ...
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phenol production industrial process. It is intended to study the cumene oxidation to CHP in order to be able to optimize it, determining the optimal operation conditions as well as choosing the most suitable catalyst that improves the process, increasing the selectivity to CHP and the oxidation rate. It is needed to
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Note that the composition disturbances of the cumene fresh feed were considered to characterize its flow with impurities carried by the back-end process reflux. Herein, it is assumed that the cumene fresh feed contains 2 % CHP, acetone, phenol, and H 2 O, respectively.
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Acetone is produced worldwide by cumene hydroperoxide process. Alternatively, free of aromatic compounds acetone is obtained by isopropyl alcohol (IPA) dehydrogenation. The feedstock is azeotropic ...
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Acetone is a stoichiometric by-product of the cumene process for the production of phenol. By self-condensation of acetone (), it is possible to synthesize compounds valuable for industry: mesityl and isomesityl …
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THE first plant to produce phenol and acetone from petroleum, through oxidation of cumene, went into operation last week when B. A.-Shawinigan Ltd. officially opened its plant at Montreal. The company, owned jointly by Shawinigan Chemicals and British American Oil Co., Ltd., is operating under license from Hercules Powder and Distillers …
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The present invention relates to an improved method for producing phenol and acetone by oxidizing cumene into technical cumol hydroperoxide (CHP) through catalytic cleavage of the CHP. According to the invention, the oxidation products are concentrated to up to a cumene content ranging from 21 to 30 wt % in the technical cumol hydroperoxide, said …
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Cumene is produced industrially by the alkylation of benzene with propylene, and is one of the primary uses of benzene. Production of cumene is gaining more interest due to increasing market demands, and is used almost exclusively as a chemical intermediate for production of phenol and acetone [1]. In this work, a sustainable conceptual design ...
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D5.11 / Process flow diagram and description of the phenol recovery process from pyrolysis oil and economic exploitation report page 4/10 3 PFD of the phenol recovery process from catalytic pyrolysis oil 3.1 Introduction Isolation of a valuable chemical from various primary streams of the conversion of biomass is a challenging task.
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In accordance with the invention, there is a process for oxidatively preparing phenol and acetone from cumene including the steps of. a. cleaving cumene hydroperoxide to produce a mixture comprising phenol, acetone and side products. 5 including heavy residue; b. separating acetone from phenol and heavy residue;
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phenol and acetone. The overall growth rate for cumene capacity has been ... Simplified Process Flow Diagram for Cumene Manufacturing Figure 3. Simulation Flowsheet for Cumene Manufacturing The ...
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The polymers of phenol and acetone fulfill the world's 80 plastic demand, and around 98% production of acetone and phenol is based on cumene ... Fig. 1 demonstrates the process flow diagram of the cumene process. The process is divided into three sections: preheating, reaction and separation section ...
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Liquid-phase oxidation of cumene with molecular oxygen produces cumene hydroperoxide, which is subsequently decomposed catalytically into phenol and acetone. The oxidation requires the use of thoroughly purified cumene. )t was carried out in a copper vessel at 120 C, good conversions and high yields of cumene hydroperoxide being obtained.
DetailsIn this section, the new DWC distillation process is proposed for synthesis and separation of high-purity cumene, which has the same feed conditions and operating conditions with the conventional distillation process, and Fig. 4 gives the process flow diagram of the DWC sequence by replacing C-2 and C-3 with a single dividing wall …
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The chemistry of the cumene process features the desired reaction of benzene with propylene to form cumene and the undesirable reaction of cumene with propylene to form p-diisopropylbenzene. Both reactions are irreversible. Since the second has a higher activation energy than the first, low reactor temperatures improve selectivity …
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Abstract. Phenol is commercially produced through cumene hydroperoxide (CHP) cleavage in kettle reactor, having the disadvantages of hazard potential, low selectivity, low efficiency and complicated process. In the study, microchannel reactor has been introduced into the decomposition using sulfuric acid as the catalyst.
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Phenol is industrially produced from benzene by the multi-step cumene process having high energy consumption and low phenol yield (5% based on the amount of benzene initially used). Among the economic and environmental disadvantages of such a process, there is the production of an explosive intermediate (cumene hydroperoxide) [2–4].
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The cumene-to-phenol process generally comprises oxidizing cumene, C 6 H 5 --CH (CH 3) 2, in air to form cumene hydroperoxide (CHP), C 6 H 5 --C (OOH) (CH 3) 2. This hydroperoxide is then cleaved under dilutely acidic conditions to form the phenol product and acetone (2-propanone) as a useful by-product.
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The cumene process encompasses the three-step synthesis, and significant amount of acetone produced as a by-product via the Hock rearrangement, which is a 1:1 M ratio concerning phenol [6 ...
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Production of Cumene Process Description Figure 1 is a preliminary process flow diagram (PFD) for the cumene production process. The raw materials are benzene and propylene. The propylene feed contains 5 wt% propane as an impurity, It is a saturated liquid at 25°C. The benzene feed, which may be considered pure, is liquid at 1 atm and …
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The first step in phenol production is oxidation of cumene to cumene-hydroperoxide (CHP) with 25-30% conversion. Phenol comes from cleavage of CHP, but in the previous step the diluted CHP has to be concentrated. ... Cavani and Gaffney (271) published a flow diagram of the Sumitomo process (see Figure 1.15), and Sumitomo process patents ...
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RESULTS The experimental results of the liquid–liquid equilibrium for the acetone–water–potassium carbonate ternary system at 25 °C was fitted to an ELECNRTL thermodynamic model (binodal ...
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yield of the alkylation proces s and hence the profitability of the whole plant. A typical process flow diagram of cumene production on a zeolite catalyst is. shown in Figure 1. Fresh and pure ...
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Phenols can also be obtained from diazonium salts by treating it with dilute acids. 4. Preparation of Phenols from Cumene. Cumene is an organic compound obtained by Friedel-Crafts alkylation of benzene …
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Abstract. In this paper we review the industrial process of phenol and acetone production and apply the mathematical modelling and computer simulation in order to choose the optimal conditions for ...
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The aim of this report is to design a plant that produce 175,000 tons/year of isopropylbenzene (cumene) with a purity of 99.4% using the Honeywell UOP QMax technology. figure1-1: Process flow ...
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Fig 2.1 Q-Max process flow diagram 6 Fig 2.2 Cost reduction during project implementation 11 Fig 2.3 Factors to be considerd during process design 12 ... resulted in increasing requirement rates for cumene. The largest phenol derivative is bisphenol-A (BPA) which supplies the polycarbonate (PC) sector. PC resins are consumed in
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The phenol and acetone products are converted into plastics and other related materials, including bisphenol-A, a building block for polycarbonate plastics, and phenolic resins used to make durable laminated boards and industrial adhesives. The Evonik MSHP process hydrogenates alpha-methylstyrene (AMS) to cumene to be …
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A compact single-unit process is developed for continuous cumene manufacture via the alkylation of benzene with propylene.The design combines reactive distillation (RD) and dividing-wall separation in a single column. In terms of the TAC, it is significantly cheaper (42%) than the conventional "reaction followed by separation …
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