Catalytic cracker units

Some years later Statoil decided to start a project within catalytic cracking in order to learn more abont residue fluid catalytic cracking in general, and particnlarly abont catalysts suitable for this process. The project started as a prestudy for the residue fluid catalytic cracker unit (FCCU) that Statoil was planning to bnild at the Mongstad refinery in Norway. The intention was to crack North Sea atmospheric residue directly, without first using a vacuum gas distillation tower followed by cracking... 

Fluid catalytic cracker unit Vapor phase catalytic Convert vacuum gas oil to catalytic naphtha... 

The performance of multivariate SPC by MSPCA is illustrated based on simulated data from a fluidized catalytic cracker unit. This simulation was provided by Honeywell to the abnormal situation management consortium. The data consist of 110 measured variables and several types of process faults. Only three components are enough to capture most of the variation in the data. The results of multivariate SPC by PCA and MSPCA are compared in Fig. 8 for a slow drift in the slurry pump around. This drift is present in variable numbers 55 and 97, and starts at 5 min and ends at 65 min. Conventional PCA is unable to detect the shift with more than 99% confidence, whereas MSPCA detects the shift consistently with 99 /o confidence after 24 min. The contribution plots for this fault at 20 min shown in Fig. 9 clearly indicate that MSPCA identifies the contributing variables, whereas PCA does not. Further theoretical comparison based on the average run length of steady-state PCA, dynamic PCA and MSPCA are also available [14],... 

Multiobjective Optimisation of Fluid Catalytic Cracker Unit Using Genetic Algorithms... 

In the present work, multiobjective optimisation study is performed on an industrial fluid catalytic cracker unit We use an adapted version of nondominated sorting genetic... 

Schuurmans H. Measurements in a commercial catalytic cracker unit. Ind Eng Chem Process Des Dev 19 267-271, 1980. 

Furnace carbon black is produced from the incomplete combustion of what is called carbon black oil feedstock, which consists of heavy aromatic residue oils. In the United States this oil is commonly the bottoms from catalytic cracker units. They are commonly referred to as cat cracker bottoms and contain relatively low hydrogen content (and conversely high carbon content). In Europe and other locations, the carbon black oil used is commonly a byproduct of high-temperature steam cracking of such products as naphtha, gas condensate, and gas oil to produce ethylene, propylene, and other olefins. Here, no catalysts are used in the cracking process. These types of carbon black oils are mainly unsaturated hydrocarbons. A third source of carbon black feedstock is coal tar, which is commonly used in China to manufacture carbon black. 

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