Method and apparatus for testing coal coking properties
A method of testing the coking qualities of sample quantities of coal in a test container and the structure of the test container are disclosed. A test container which is ideally reusable is adapted to receive one or more samples of coal to be tested and then the test container is inserted into a coking oven along with additional, conventional coal during a conventional coking operation. Following the completion or substantial completion of the coking operation, the test container is recovered and from the conventional converted coke and the sample(s) of coke are removed from the container for testing and evaluation. The container is recharged with one or more additional samples of coke and reused in another conventional coking operation.
1. A container for evaluating the coking properties of coal in a horizontal heat recovery coking oven comprising:
a bottom member;
a top member;
at least one side member extending between the bottom and top members;
the bottom, top and side members defining an interior chamber that is adapted to contain a test sample of coal and to be positioned inside a horizontal heat recovery coking oven along with a supply of coking coal during the process of reducing into coke at least a portion of the test sample of coal and the supply of coking coal wherein the container is formed at least in part from materials which will not be consumed during the reduction process; the container having a plurality of vent apertures that penetrate at least one of the bottom member, top member, or at least one side member of the container; the vent apertures being positioned in open communication with the interior chamber and shaped to allow the passage of fluids into, and from within, the interior chamber through the at least one of the bottom member, top member, or at least one side member of the container during the reduction process; and
at least one of the bottom member, top member and at least one side members is selectively moveable to an open position to accommodate the charging of the container with test coke prior to reduction process, moveable to a closed position during the reduction process and moveable to the open position following the reduction process for the recovery of the test coal for evaluation purposes.
2. A container according to claim 1 wherein at least one side members comprises a plurality of side walls which extend between the top and bottom members.
3. A container according to claim 1 wherein at least one of the bottom member, top member and at least one side member of the container is formed, at least in part, from materials selected from the group of steel, ceramic, and refractory materials so that the container can be used for multiple processes of reducing test samples of coal into coke.
4. A container according to claim 1 wherein at least one vent aperture is provided on the bottom member of the container and further comprising a barrier liner provided intermediate the bottom member and the test sample of coal to contain the test sample of coal in the container prior to reduction.
5. A container according to claim 4 wherein the barrier liner is formed from a material which is consumed during the process of reducing coal into coke.
6. A container according to claim 1 wherein a plurality of vent apertures are provided on at least one of the bottom member and the top member, the apertures being in the range of ⅛th to 2 inches in cross section.
7. A container according to claim 1 and further comprising an insulating layer provided in the container intermediate the test sample of coal prior to reduction and at least one of the bottom member, top member and at least one side member of the container.
8. A container according to claim 7 wherein the insulation layer is formed from a refractory material which is provided intermediate the test sample of coal prior to reduction and the at least one side member of the container.
9. A container according to claim 1 and further comprising at least one loading lug provided on the bottom member of the container, the loading lug being adapted to cooperate with machinery used to load coal into a coke oven.
10. A container according to claim 1 wherein the top member is removably mounted to the container for repeated processes of charging of the container with coal and removing coke from the container following reduction.
11. A container according to claim 1 wherein the container is formed from four side members mounted to one another.
12. A container according to claim 11 and further comprising a plurality of vent apertures formed in the side members.
13. A container according to claim 12 and further comprising a gusset provided on at least one of the side members to provide added structural support thereto.
14. A container according to claim 12 wherein the plurality of vent apertures are in the range of ⅛th to 2 inches in cross section.
15. A container according to claim 12 wherein the plurality of vent apertures are substantially 0.75 inches in cross section.
16. A container according to claim 1 wherein at least one of the bottom, top and side members being adapted to be moveable relative to at least one of the other of the bottom, top and side members during the reduction process to accommodate expansion of the test sample of coal as the test sample of coal is converted to coke.
17. A container according to claim 1 and further comprising at least one divider element adapted to create at least two test spaces within the test container so that the coking properties of multiple blends of coal can be tested simultaneously.
18. A container according to claim 1 wherein at least one vent aperture is provided on the top member of the container to permit the expulsion of gases and volatile materials from the container during the reduction process.
19. A container according to claim 18 and further comprising at least one cover member provided on the test container adjacent the at least one vent aperture wherein gases and volatile materials may be expelled from the container through the at least one vent aperture during the reduction process, but the entry of impurities into the test container through the at least one vent aperture is resisted.