Cracking Furnace Research Articles

Automatic Operation of Naphtha Cracking Furnace by Optimizing Controller

The authors have developed an independent process of manufacturing acetylene and ethylene through cracking naphtha, in their association with the Research Association of Polymer Raw Materials which is jointly participated in by 23 leading Japanese firms in the field such as petroleum, chemical, iron & steel, etc.In this process development, the thermal cracking furnace was operated under control of optimizing controller (OPCON) achieving promising results even, though on a pilot plant basis, an outline of which will be reported in this paper.The naphtha cracking furnace used in this test was of an internal combustion type, and the process is that naphtha preheated at temperature of 500 deg. centigrade is injected into the combustion gas, containing steam, at high temperature.

Tube by Tube Design of Light Hydrocarbon Cracking Furnaces Using a Digital Computer

Tube by Tube Design of Light Hydrocarbon Cracking Furnaces Using a Digital Computer

Incoloy tubes perform successfully in hydrocarbon cracking furnaces

Incoloy tubes perform successfully in hydrocarbon cracking furnaces

The Fundamentals of the Design of Cracking Furnaces

Abstract The great number of variables necessarily considered in the composite design of cracking furnaces in petroleum refining requires unusual engineering attention, resulting in a marked prevalence of custom designs, as contrasted with the usual steam-boiler designs. In this paper the procedure of design of cracking furnaces is discussed from the standpoints of processing, surface requirements, arrangement of heating surface, efficiencies, and heat distribution. The importance of obtaining good heat distribution by the proper combination of heating surface, well-designed burners, and handling of furnace draft is emphasized. Due to the relatively short life of the average refinery furnace, the question of capital cost is of prime importance. In addition, the nature of the fluids handled, under relatively severe conditions of pressure and temperature, requires the closest possible check on the materials of construction in order to insure safety of operation, combined with low capital cost. The various materials, such as tubes, headers, brickwork, which enter into the mechanical construction of the furnace itself, are considered, and typical detailed designs presented. The increased use of high temperatures and pressures and the trend toward higher heating rates make this part of the subject of increasing interest to the oil refiners.