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Modified coal production equipment

a technology of coal production equipment and coal slag, which is applied in the field of upgradable coal production equipment, can solve the problem that low-rank coal may thus spontaneously combus

Inactive Publication Date: 2015-01-29
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The upgraded coal production equipment can create upgraded coal easily by inhibiting different types of raw material coal under specific circumstances. This simplifies the process of producing high-quality coal.

Problems solved by technology

The low-rank coal may thus spontaneously combust due to reaction heat generated by the reaction.

Method used

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  • Modified coal production equipment
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  • Modified coal production equipment

Examples

Experimental program
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first embodiment

[0058]A first embodiment of the upgraded coal production equipment of the present invention is described based on FIGS. 1 to 4.

[0059]As shown in FIG. 1, a delivery port of a mill-type pulverizer 111 configured to pulverize low-rank coal 1 which is raw-material coal such as subbituminous coal and brown coal is connected to a port of a drying device 112 for receiving the low-rank coal 1, via a rotary valve 121, the drying device 112 being a steam tube dryer system and configured to cause moisture 2 in the low-rank coal 1 to evaporate. Water vapor 101 which is a heat medium is supplied into a coil-shaped heating tube arranged in a center portion of the drying device 112, and the drying device 112 thereby heats (about 100° C.) the low-rank coal 1 and removes the moisture 2 from low-rank coal 1. The drying device 112 can thus produce dry coal 3.

[0060]A port of the drying device 112 for discharging the dry coal 3 is connected to an upstream side of a conveyor 113 in a conveyance direction...

second embodiment

[0101]A second embodiment of the upgraded coal production equipment of the present invention is described based on FIGS. 5 to 8. Note that parts similar to those in the aforementioned embodiment are denoted by reference numerals similar to the reference numerals used in the description of the aforementioned embodiment, and description overlapping the description of the aforementioned embodiment is omitted.

[0102]As shown in FIG. 5, the first sample moving device 142 configured to receive the sample 3a from the first sampling device 141 and move the sample 3a can communicate with: a first testing device 243 which is the first testing means and which performs the oxygen adsorption test by holding the sample 3a collected by the first sampling device 141 in an air-tight manner in an inside of the first testing device 243 filled with an air atmosphere being an oxygen containing atmosphere and maintained at a constant temperature (for example, 20° C.); and the first weighing device 144 whi...

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Abstract

Modified coal production equipment comprising: first oxygen adsorption speed measuring means (141-144, 149a, 149b), etc., that sort dried coal (3) dried in a drying device (112), and find the oxygen adsorption speed (Vd) of the dried coal (3); second oxygen adsorption speed measuring means (145-148, 149a, 149b) that sort modified coal (7) deactivated by an deactivation treatment device (130), and find the oxygen adsorption speed (Vr) of the modified coal (7); and an arithmetic control device (150) that calculates the oxygen adsorption speed ratio (N) from formula (Vr−Vd) / Vd=N, on the basis of Vd and Vr, and, if N>Ns (a standard value), reads from a map the increased oxygen concentration value (Oa) in a processing gas (106) corresponding to N, calculates a revised oxygen concentration value (Oc) on the basis of the current oxygen concentration value (Op) and Oa, and controls blowers (133, 135) so as to reach Oc.

Description

TECHNICAL FIELD[0001]The present invention relates to upgraded coal production equipment and is particularly useful when applied to a case of upgrading low-rank coal such as brown coal and subbituminous coal which is porous and which contains a large amount of moisture.BACKGROUND ART[0002]There are abundant reserves of low-rank coal which is coal containing a large amount of moisture such as brown coal and subbituminous coal. Meanwhile, the calorific value of the low-rank coal per unit weight is small. In view of this, the low-rank coal is heated to be subjected to drying processing and pyrolysis processing and is thereby improved in calorific value per unit weight.[0003]In this connection, the heated low-rank coal tends to adsorb water. In addition, carboxylic groups and the like on a surface of the low-rank coal are removed, thereby forming radical and the like on the surface. This increases activity on the surface of the low-rank coal and accordingly makes the low-rank coal easil...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L9/06C10L9/08
CPCC10L9/083C10L9/06C10L9/08C10L2290/08C10L2290/58C10L2290/60Y02E50/10C10B53/00C10B53/04
Inventor ABE, HYOTANAKAGAWA, KEIICHIOMOTO, SETSUO
Owner MITSUBISHI HEAVY IND LTD