A method of evaluating coal includes preparing coal samples having different inert amounts by pulverizing one brand of coal; measuring the inert amounts of the respective coal samples and measuring surface tensions of semi-coke obtained by heat treating the respective coal samples; and determining a regression line based on the inert amounts and the surface tensions and evaluating the coal by using, as an index, a ratio of a variation in the surface tensions to a variation in the inert amounts as determined from the regression line.

A method of producing a coal mixture includes blending a plurality of coals, wherein formula (1) and formula (2) are satisfied:

[00001]$\begin{array}{cc}{\alpha }_{\mathrm{calc}}=\underset{i}{\overset{N}{.Math.}}{\alpha }_i\times x_i& \left(1\right)\end{array}$

α.sub.calc≤1.2×10.sup.−10 (mol/g-coal)  (2)

wherein α.sub.calc is a hydrogen ion release capacity per unit mass (mol/g-coal) of the coal mixture, al is the hydrogen ion release capacity per unit mass (mol/g-coal) of a coal i, x.sub.i is a blending ratio of the coal i blended in the coal mixture, and N is a total number of brands of coal contained in the coal mixture.

A method of producing a coal mixture includes blending a plurality of coals, wherein formula (1) and formula (2) are satisfied:

[00001]$\begin{array}{cc}{\alpha }_{\mathrm{calc}}=\underset{i}{\overset{N}{.Math.}}{\alpha }_i\times x_i& \left(1\right)\end{array}$

α.sub.calc≤1.2×10.sup.−10 (mol/g-coal)  (2)

wherein α.sub.calc is a hydrogen ion release capacity per unit mass (mol/g-coal) of the coal mixture, al is the hydrogen ion release capacity per unit mass (mol/g-coal) of a coal i, x.sub.i is a blending ratio of the coal i blended in the coal mixture, and N is a total number of brands of coal contained in the coal mixture.

A pyrolysis reactor and process for processing or recycling waste material. The pyrolysis reactor defines an internal cavity, and includes an inlet for the transfer of feedstock material into the internal cavity and an outlet for the transfer of processed material out of the internal cavity. The pyrolysis reactor also includes an induction heating apparatus comprising up to three induction heaters arranged outside of the internal cavity and an induction susceptor within the internal cavity e.g. granules up to 50 mm diameter and/or a helical stirrer including an induction susceptor material. The induction heating apparatus is configured to heat feedstock material within the internal cavity.

Clean, safe and efficient methods, systems, and processes for utilizing thermolysis methods to processes to convert various e-waste sources into Clean Fuel Gas and Char source are disclosed. The invention processes e-waste sources, such as for example whole circuit boards, to effectively shred and/or grind the waste source, and then process using thermolysis methods to destroy and/or separate halogen and other dangerous components to provide a Clean Fuel Gas and Char source, along with the ability to recover precious metals and other valuable components from the Char.

Clean, safe and efficient methods, systems, and processes for utilizing thermolysis methods to processes to convert various e-waste sources into Clean Fuel Gas and Char source are disclosed. The invention processes e-waste sources, such as for example whole circuit boards, to effectively shred and/or grind the waste source, and then process using thermolysis methods to destroy and/or separate halogen and other dangerous components to provide a Clean Fuel Gas and Char source, along with the ability to recover precious metals and other valuable components from the Char.

In one embodiment, a method for producing coke that includes mixing at least a first and a second carbonaceous material into a single feedstock of carbonaceous material. The coking feasibility of the single feedstock of carbonaceous material is then determined. The single feedstock is customized into a predetermined material composition, and then the customized single feedstock is pyrolyzed to produce coke material and coke by-products. Other embodiments are also disclosed.

In one embodiment, a method for producing coke that includes mixing at least a first and a second carbonaceous material into a single feedstock of carbonaceous material. The coking feasibility of the single feedstock of carbonaceous material is then determined. The single feedstock is customized into a predetermined material composition, and then the customized single feedstock is pyrolyzed to produce coke material and coke by-products. Other embodiments are also disclosed.

A method for preparing a coal, which is used alone or in combination with at least one other coal, or a caking additive as a raw material for coke production. The method includes, before the coal or caking additive is delivered to a coke plant, adjusting a grain size such that the amount of grains with a grain size of 6 mm or more in the coal or caking additive satisfies at least one of a degree of entanglement (a - b)/a of 0.20 or more and a portion having a height a of 30 mm or more is 30% or less by mass. The height a is a height of semicoke adhering to a stirrer, the semicoke formed by heating the coal or caking additive in a container while rotating the stirrer, and the height b is a height of the semicoke on an inner wall of the container.

A method for preparing a coal, which is used alone or in combination with at least one other coal, or a caking additive as a raw material for coke production. The method includes, before the coal or caking additive is delivered to a coke plant, adjusting a grain size such that the amount of grains with a grain size of 6 mm or more in the coal or caking additive satisfies at least one of a degree of entanglement (a - b)/a of 0.20 or more and a portion having a height a of 30 mm or more is 30% or less by mass. The height a is a height of semicoke adhering to a stirrer, the semicoke formed by heating the coal or caking additive in a container while rotating the stirrer, and the height b is a height of the semicoke on an inner wall of the container.