The synthesis of phenol from benzene via cumene and cumene hydroperoxide is called the Hock process. First, a Friedel–Crafts alkylation reaction of benzene with propene gives cumene. Then cumene forms cumene hydroperoxide via a radical chain reaction. In the chain initiation step, the benzylic hydrogen is abstracted to give a benzylic radical.

The use of the re-extractive distillation process is a viable alternative for phenol purification, since it allows the second product of the cumene method, acetone, to be involved in the technological cycle. ... Romanova, N.A. and Leontiev, V.S., Structure and energy optimization of the phenol and acetone separation process using reaction ...

Phenol-acetone process - cumene oxidation-kinetics and industrial-plant simulation. Chem. Eng. Sci., 47 (9–11) (1992), pp. 2511-2516. View PDF View article View in Scopus Google Scholar. Kharlampidi et al., 2020. K.E. Kharlampidi, et al. The kinetic modeling of cumene oxidation taking into account oxygen mass transfer.

Acetone is a major by-product of the CHP oxidation process for the production of phenol. The overall economics of the process are highly dependent on …

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, acetone is co-produced.

This article is cited by 4 publications. Fatma Gül Boyaci, Serpil Takaç, Tunçer H. Özdamar. Nucleophile influence on the complex reaction network of 2-isopropylnaphthalene hydroperoxide decomposition.

However, it is more soluble in organic solvents like ether, acetone, and chloroform. Is Phenol an Acid or Base. Phenol acts as a weak acid. The hydroxyl group can release a proton (H +) from the oxygen atom, …

Well over 90% of the world phenol production is based on this technology. A drawback of this process is the substantial production of acetone coproduct. While well-established global markets for acetone exist, the demand for this coproduct has not always kept pace with the demand for phenol in certain regions.

Published July 2020. The dominant commercial production of phenol proceeds via cumene hydroperoxide (CHP) route. Over 95% of the world's phenol production is based on this technology and the rest is produced via toluene oxidation or recovered from coal tar.

Abstract. 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 …

In the phenol-acetone process, a certain amount of process water is generated and must be treated in a biological wastewater treatment plant. The overall reaction of the process can be described as a dual oxidation, wherein benzene is oxidized to phenol, and propene is oxidized to acetone. 1.2. Production of Acetone by …

Phenol is produced industrially by the Hock process, which involves the oxidation of cumene. It is the most widely used synthetic pathway, accounting for a production rate of over 6.7 million t/a of phenol and approximately 4.1 million t/a of the coproduct acetone.It is an economically competitive process, supported by the demand …

SRIC Report - PEP RW2020-11 - Integrated Cumene-Phenol-Acetone-Bisphenol A-Part III: Bisphenol A (BPA) Customer Logins. Obtain the data you need to make the most informed decisions by accessing our extensive portfolio of information, analytics, and expertise. Sign in to the product or service center of your choice. ... Previously, the …

The process according to claim 1, characterized in that the cleavage of dicumyl peroxide and dimethylphenylcarbinol is carried out in the tubular reactor in a reaction medium with a phenol: acetone ratio range of 1:0.77-0.80, whereby the phenol: acetone ratio is achieved either by removal of a part of the acetone or with the help of the ...

Here we describe the development of a carbon-negative fermentation route to producing the industrially important chemicals acetone and isopropanol from …

The research on acetone purification, especially on the acetone refining section in the cumene hydroperoxide process is of great importance, which is high in energy cost but the most popular method for acetone production.

Table 5.8 Phenol by KBR process—Variable costs 41 Table 5.9 Phenol by KBR process—Production costs 42 Table 5.10 Environment footprints for the KBR phenol process 44 Figures Figure 1.1 Phenol and Acetone key components in cumene value chain 5 Figure 2.1 BFD of KBR Phenol process technology 7 Figure 2.2 Block flow …

This article provides an overview of the chemical principles of achieving the highest possible selectivity in the modern process of simultaneous phenol and acetone …

Phenol is industrially produced by the Hock process starting from benzene and propylene to yield cumene, which is subsequently oxidized with oxygen to generate cumene hydroperoxide (CHP) which is then decomposed with sulfuric acid to obtain equimolar phenol and acetone. Both phenol and acetone are important bulk chemicals …

production economics. The Sunoco/UOP Phenol process fills that need with commercially proven technology for the cumene route to phenol and acetone, backed up by continuing improvements and service. Cumene peroxidation is the preferred route to phenol, accounting for more than 90% of world production. The Sunoco/UOP Phenol process …

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 …

The common production process takes place in two phases. In the first phase, the cumene is oxidized to cumene hydroperoxide (CHP), with conversions which range from 20- 30 percent by weight, and in the second phase the CHP is acid cleaved into phenol and acetone with an acid, generally sulfuric acid.

The Versalis/Lummus Technology phenol process utilizes advanced technology for the air oxidation of cumene followed by acid-catalyzed decomposition to phenol and acetone.

This article provides an overview of the chemical principles of achieving the highest possible selectivity in the modern process of simultaneous phenol and acetone production on the basis of the achievements in technology developed by ILLA International, LLC, that has been successfully implemented in many plants all over the world. The …

original cumene-based phenol process, as well as an analysis of currently existing relevant technologies, are presented in far greater detail in a treatise, by the author of this article, entitled "Phenol and Acetone: An Analysis of the Process Technologies, and of the Kinetics and the Mechanisms of Correspond-

A novel reactive distillation (RD) process for phenol production with high energy efficiency was developed, in which concentrating cumene hydroperoxide (CHP) was integrated with its...

Fig. 8 shows that the maximum uptake of phenol/acetone ions increased up to 150 rpm; following that, it appeared to be constant. This might be a result of the phenol/acetone ions moving quickly toward the surface of the adsorbent with the least amount of resistance possible at a greater shaking percent [64]. Therefore, 150 rpm was …

Since the 1950s, the cumene-to-phenol process is the predominant synthetic route for the production of phenol with acetone as the co-product. Cumene is …

Cumene is isopropyl benzene. Cumene in presence of sodium carbonate is oxidised by passing air or oxygen. The catalyst is cobalt naphthenate. Temperature is 423 K. The product cumene hydroperoxide is heated with dilute sulphuric acid. It decomposes to phenol and by product acetone. Acetone is separated by distillation.

The process involves the reaction of 1,2,4,5‑tetrachlorobenzene with base at a temperature of about 160°C. ... When hydrolyzed in acidic medium the peroxide intermediate produces phenol and acetone, which are both valuable chemical products. Mechanism. Protonation and water loss. Initially cumene react with oxygen ...