A method of producing a coal blend by blending plural brands of coal to produce a coal blend includes letting a surface tension of coal when inert material is assumed to be 100 vol % be γ.sub.100, and letting a surface tension of coal when reactive material is assumed to be 100 vol % be γ.sub.0, determining γ.sub.0 of coal; among brands of coal 1, 2, . . . i, . . . , and n to be blended in a coal blend, specifying coal i in which γ.sub.100 is outside of γ.sub.0; measuring TI of coal i; and determining a blending ratio of coal i such that w calculated by formula (1) is 20.4 mass % or less

w=Σ(xi×TIi)  (1).

A method of producing a coal blend by blending plural brands of coal to produce a coal blend includes letting a surface tension of coal when inert material is assumed to be 100 vol % be γ.sub.100, and letting a surface tension of coal when reactive material is assumed to be 100 vol % be γ.sub.0, determining γ.sub.0 of coal; among brands of coal 1, 2, . . . i, . . . , and n to be blended in a coal blend, specifying coal i in which γ.sub.100 is outside of γ.sub.0; measuring TI of coal i; and determining a blending ratio of coal i such that w calculated by formula (1) is 20.4 mass % or less

w=Σ(xi×TIi)  (1).

The present invention relates to debottleneck solution for delayed Coker unit. More particularly, this invention relates to bottoms of vacuum residuum routed to Coker unit through de-asphalting unit to avoid revamp of existing Coker for the processing of heavier feed stock when there is a change in crude slate. Another object of the invention, in particular, relates to improved delayed coking products, a process used in petroleum refineries to crack petroleum residue, thus converting it into gaseous and liquid product streams and leaving behind solid, carbonaceous petroleum coke.

A method of estimating a surface tension of coal includes subjecting a surface tension, a physical property value representing a coal rank, and a total inert content of each of different brands of coal to multiple regression analysis to determine in advance a regression equation including the surface tension of coal as an objective variable and the physical property value and the total inert content as explanatory variables; and measuring the physical property value and the total inert content of a coal of which the surface tension is to be estimated, and calculating the surface tension of the coal with the measured physical property value and the measured total inert content, and the regression equation.

A method of estimating a surface tension of coal includes subjecting a surface tension, a physical property value representing a coal rank, and a total inert content of each of different brands of coal to multiple regression analysis to determine in advance a regression equation including the surface tension of coal as an objective variable and the physical property value and the total inert content as explanatory variables; and measuring the physical property value and the total inert content of a coal of which the surface tension is to be estimated, and calculating the surface tension of the coal with the measured physical property value and the measured total inert content, and the regression equation.

A two-step process that includes a pyrolytic first step carried out in a mechanically or gravitationally impelled reactor and a catalytic fluid bed second step that upgrades the resulting vapor, for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX is described.

A two-step process that includes a pyrolytic first step carried out in a mechanically or gravitationally impelled reactor and a catalytic fluid bed second step that upgrades the resulting vapor, for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX is described.

Coke products configured to be combusted in a cupola furnace are disclosed herein. The coke products can include foundry coke products having a hydraulic diameter of at least 3.5″, egg coke products having a hydraulic diameter of 1.5-3.5″, and breeze coke products having a hydraulic diameter of 0.5-1.5″. Individual foundry coke products can comprise an oblong shape including a length of at least 4″, a width of at least 1.5″, and a length:width ratio of at least 2.0. In some embodiments, the length of individual coke products can be between 6-12″ and the width can be at least 2.5″. Additionally, the foundry coke products can have a Coke Reactivity Index (CRI) of at least 40%. The coke products can be made from a blend of coal and breeze coke products in horizontal ovens, such as horizontal heat recovery or horizontal non-recovery ovens.

Provided is a binder for a coal-containing formed product, which contains a macromolecular polymer having an intrinsic viscosity of 2.0 dl/g or higher.

Provided is a binder for a coal-containing formed product, which contains a macromolecular polymer having an intrinsic viscosity of 2.0 dl/g or higher.