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The cumene process (cumene–phenol process, Hock process) is an industrial process for synthesizing phenol and acetone from benzene and propylene.The term stems from cumene (isopropyl benzene), the intermediate material during the process. It was invented by R. Ūdris and P. Sergeyev in 1942 (USSR)., and independently by Heinrich Hock in 1944 This process converts two relatively …
Jul 01, 2007· 10%· The history of designing and the evolution of the process for the joint production of phenol and acetone, which is now the basic industrial method for the manufacture of these products, the state of the art and parameters of its key steps in industrial facilities among world manufacturers of phenol are presented. Special attention is given to the consideration of ways of …
Jul 27, 2010· Cumene hydroperoxide (CHP) being catalyzed by acid is one of the crucial processes for producing phenol and acetone globally. However, it is thermally unstable to the runaway reaction readily. In this study, various concentrations of phenol and acetone were added into CHP for determination of thermal hazards. Differential scanning calorimetry (DSC) tests were used to obtain the parameters of ...
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 …
Aug 01, 2020· Currently, the production of cumene is largely associated with the demand for phenol and phenol derivatives. Figure 1. The diagram show cumene production from benzene and propylene[/caption] The process The present analysis discusses an industrial process for cumene production. The process has two main sections: (1) reaction; and (2) distillation.
Dec 02, 2016· In the separation process, the side product and waste are removed to get the primary product i.e. Phenol. Basic Process Flow Diagram and background. Figure 5: Block diagram for the process of Phenol. So as to do a simulation the phenol production process is composed of two processes i.e. oxidation and cleavage of Cumene. Hock process (oxidation ...
29 13 Simplified process flow diagram for the manufacture of acetone and phenol from cumene 34 14 Locations of plants manufacturing phenol from cumene, and cumene 40 15 Simulated source severity distribution for total nonmethane hydrocarbons emitted from the cumene peroxidation vent 70 16 Simulated source severity distribution for total ...
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 the process of isopropylbenzene hydroperoxide decomposition by cumene method.
Cumene Hydroperoxide is a colorless to pale yellow liquid with a strong odor. It is used to make Acetone and Phenol, as a curing agent, and a polymerization catalyst. * Wash thoroughly immediately REASON FOR CITATION * Cumene Hydroperoxide is on the Hazardous Substance List because it is cited by DOT, DEP, NFPA and EPA.
The design of the phenol production process is developed as part of the MSc-level course on Process Design at DTU. As the base case design, auto-catalyzed oxidation of cumene to cumene hydroperoxide subsequently cleaved over a solid catalyst to phenol and acetone is selected. In this process…
Isopropyl benzene popularly known as Cumene is gaining a lot importance nowadays. Cumene is the major chemical used in the manufacturing of phenol and its co-product acetone on the industrial scale. ... It is found that the cost of materials used is much higher than the cost of energy needed for the process. Steady state simulation using ASPEN ...
About This Process Essentially all cumene produced worldwide is used as a feedstock in phenol plants, which convert it to phenol and acetone by cumene peroxidation. Therefore, the cumene and phenol markets are strongly tied. From 1993 to 1998, world cumene demand grew at a rate of 4.7%/yr, increasing from 5.6 million to 7.1 million t/yr.
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Phenol | C6H5OH or C6H6O | CID 996 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety ...
to become a cumene hydroperoxide before it is split into phenol and acetone as the product. The sulphonation route produced large quantities of waste, and more and thus being replaced by oxidation of cumene process. The reaction between phenol and acetone would yield to …
At that time, a new process based on toluene was introduced and this route is now used for ahout. 91% of phenol production in Western Europe. The world production capacity for phenol using the. Hock process is currently about 5×10. 6. tonnes per yea r. Despite the 0.62 tonnes of acetone produced.
Production of phenol from cumene - Systematic and efficient design method. November 2013; ... A commercial simulator is used for process simulation (design verification), ICAS for property ...
Cumene and Phenol plants in the Shanghai Chemical Industry Park (SCIP), with a capacity to produce: 250kMt of phenol and 150kMt of acetone CCS is using OTS to reinforce the training for all the operation staff, with plenty of scenarios, to improve the economical operation of the plant, such as normal
The dynamic model of the cumene hydroperoxide (CHP) cleavage reactor in a phenol-from-cumene plant is developed in order to simulate its transient behavior. According to literature on safety many thermal runaways or explosion incidents are caused by the decomposition of organic peroxides because of the relatively weak oxygen-oxygen bond that is the basis for their reactivity and tendency for ...
Design and Control of the Cumene Process. Ind. Eng. Chem. Res. 2010, 49, 719–734 719 Design and Control of the Cumene Process William L. Luyben* Department of Chemical Engineering, Lehigh UniVersity, Bethlehem, PennsylVania 18015 The chemistry of the cumene process features the desired reaction of benzene with propylene to form cumene and the ...
The gavage studies showed that cumene was absorbed readily via this route, with maximum blood levels occurring at the earliest time point sampled (4 hr) for the lower dose and at 8 to 16 hr for the higher dose. Elimination of cumene from the blood appeared as monoexponential with a half-life calculated between 9 to 16 hr for the gavage doses.
The present invention provides in a particular embodiment an improvement in the process for producing phenol by the acid-catalyzed cleavage of cumene hydroperoxide (CHP). The reactant stream fed to the cleavage reactor also includes the contaminant by-product dimethyl benzyl alcohol (DMBA) formed during the direct oxidation of cumene to CHP.
A commercial simulator is used for process simulation (design verification), ICAS for property prediction and analysis of design options and ECON for cost and economic evaluation. A production rate of 300,000 metric tons/year of phenol is considered. In the base case, 0.66 kg of phenol and 0.41 kg of acetone are produced per kg of cumene with ...
Jun 08, 1992· Phenol-acetone process: cumene oxidation kinetics and industrial plant simulation Author links open overlay panel P. Andrigo a A. Caimi a P. Cavalieri d'Oro a A. Fait a L. Roberti b M. Tampieri a V. Tartari c
The cumene process for phenol–acetone (PA) manufacture is one of the unique high-volume petrochemical processes in which simultaneously two products (phenol and acetone) are obtained from one reactant (cumene), each of the products finding useful application; however, which is most important, their reaction with one another in the joint ...
Jul 17, 2018· Shortcomings of the calculation of a cumene production reactor on the basis of kinetic reaction parameters obtained by quantum-chemical methods have been considered. The cumene production process in the reactor comprising an equilibrium reactor and a separator that is needed to take account of benzene evaporation has been modeled. A base model of equilibrium reactions …
Experiments with cumene oxidation in the presence of NaHCO 3 and a comparative experiment with Na 2 CO 3 gave a surprising reduction of process selectivity by 0.5% abs. in case of using NaHCO 3 (FIG. 2).. In FIG. 2, curve X is based on data points from water-emulsion cumene oxidation with Na 2 CO 3 and curve Y is based on data points from water-emulsion cumene oxidation with NaHCO 3.
Jun 24, 2019· Figure 8 Phenol production by cumene process with phenolic processing unit. Figure 9 Typical diagram of phenol and acetone distillation at phenol production by cumene method (Romanova, Leontiev 2017) Figure 10 Simulation of phenol and acetone distillation in Aspen Hysys Figure 11 Reactor simulation in Aspen Plus