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ILLA's Phenol Process has proven to be exceptionally reliable in operation at various phenol plants and has incomparable safety records. ILLA's clients have never experienced any safety-related emergency shutdowns caused by any fault of the safety system designed under ILLA International concepts.

ILLA's Phenol Process operation is based on the use of a computerized control system. Accordingly, this process achieves a much higher safety and protection level, absolute independence from the knowledge of the operating personnel, and highest quality of desired products, which by far outpaces any competing processes.

ILLA has succeeded in implementing its unique and essentially innovative approach to cumene oxidation and CHP cleavage, i.e., to the key and most dangerous sections of a phenol process.

 

Cumene Oxidation

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Monitoring/control of oxygen concentration in the spent air from the reactors (off-gases)

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Optimum design of heat removal in the reactors

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Maintaining optimum conditions based on the kinetic model of the process

CHP Cleavage

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Automatic computerized start-up of the process

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Three-level process protection

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On-line computer monitoring and control over the degree of CHP conversion in the reactors

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Protection against process disturbances

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Flexibility at variable feed-rates

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Safe and stable performance at overdesign feed-rates

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Automatic balancing of heat generation and heat removal occurrences

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Complete elimination of the "hot spots" problem typical of all other technologies

With regard to the acid-catalyzed CHP cleavage stage, which occurs within several seconds, ILLA International totally rejected the outdated conventional philosophy of process protection, which is still applied in all other available competitive technologies and assumes a single-level protection system. ILLA has developed a unique three-level method for the monitoring, control, and protection of the process. This method allows for computer-aided process start-up, computer-aided monitoring of all the operating conditions, and automated control over CHP conversion degree regardless of any disturbances affecting the process and causing deviations from design operating conditions. This has resulted in a many-fold increase in the safety level of ILLA's CHP cleavage process compared to the processes that utilize the conventional protection methods. Moreover, in ILLA's process, the criteria of maximum process selectivity and maximum process safety level are not opposed to one another, in contrast to the conventional philosophy applied in other technologies. Indeed, ILLA's process provides maximum selectivity in conjunction with maximum safety level. Due to this advantage, the yields of desired products from this process greatly exceed those from competitive processes. On the other hand, this process does not require a hard-to-operate and energy-consuming tar cracking system because ILLAs process ensures a significantly lower yield of phenol tar compared to any other competitive process.

The unique design of FAN2000 allows a 20 to 40% relative reduction in the cooling water consumption as against other competitive processes.

 

 

 


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