JPWO2020146337A5

JPWO2020146337A5 -

Info

Publication number: JPWO2020146337A5
Application number: JP2021539958A
Authority: JP
Publication date: 2023-01-20

Claims

A method for comminuting one or more substances, comprising:
disposing a first stream comprising (i) a circulating fluid and (ii) particles of material in a grinding chamber of a jet mill, and a second stream comprising (a) said circulating fluid and (b) ground material; and pressurizing the jet mill with the circulating fluid;
conveying the second stream to a cyclonic separator and configuring the cyclonic separator to separate a first portion of the comminuted material and a second portion of the comminuted material; said first portion of said milled material comprising particles having a particle size greater than or equal to a threshold particle size and said second portion of said material having a particle size less than said threshold particle size comprising particles;
collecting the first portion of the pulverized material in a first collector;
transferring a third stream comprising (1) said circulating fluid and (2) said second portion of said comminuted material to a second collector and transferring said second collector to said third stream; separating the second portion of the comminuted material from to produce a fourth stream comprising the circulating fluid;
contacting the fourth stream with additional particles of the material to produce a fifth stream.

2. The method of claim 1, wherein the circulating fluid comprises oxygen-free gas.

2. The method of claim 1, wherein said material comprises an organic material.

4. The method of claim 3 , wherein the organic material comprises coal.

4. The method of claim 3 , wherein the organic material comprises coal, lignite, tar sands, and oil shale, or combinations thereof.

4. The method of claim 3 , wherein the organic material comprises cellulose or an edible organic material .

the jet mill,
the grinding chamber;
a manifold including at least one first fluid inlet, the manifold surrounding the grinding chamber;
(i) a second fluid inlet and (ii) a feed tube assembly including a hollow body having a material inlet;
A method according to any preceding claim, wherein the grinding chamber is in fluid communication with the manifold and with the hollow body of the feed tube assembly.

Disposing the first stream in the grinding chamber of the jet mill comprises:
placing the material within the material inlet of the feed tube assembly;
disposing the circulating fluid within the grinding chamber via the at least one first fluid inlet and disposing the circulating fluid within the feed tube assembly via the second fluid inlet; 8. The method of claim 7 .

providing a feed hopper containing said material;
9. The method of claim 8 , further comprising placing the material on a conveyor feeder configured to place the material within the material inlet of the feed tube assembly of the jet mill.

10. The method of claim 9 , further comprising applying positive pressure from the circulating fluid to the feed hopper.

10. The method of claim 9 , wherein the conveyor feeder places the material into the feed tube assembly of the jet mill at a rate of about 1 kg/hr to about 5,000 kg/hr.

10. The method of claim 9 , wherein the conveyor feeder is located within an enclosure, the method further comprising applying a positive pressure with the circulating fluid to the enclosure.

2. The method of claim 1, wherein the pressure within the jet mill is from about 75 psig to about 150 psig.

2. The method of claim 1, wherein the material has an average particle size of about 0.75mm to about 2mm.

2. The method of claim 1, wherein the threshold particle size is between about 0.1 μm and about 10 μm.

2. The method of claim 1, wherein said first portion of said ground material has an average particle size of about 5 microns to about 100 microns.

A system for comminuting material, comprising:
a jet mill configured to produce a ground material by reducing the average particle size of the material;
A cyclone separator configured to separate a first portion of ground material and a second portion of ground material, wherein said first portion of ground material has a threshold particle size or greater. a cyclone separator comprising particles having a size, wherein the second portion of the ground material comprises particles having a size less than the threshold particle size;
a first collector configured to collect the first portion of the comminuted material;
a second collector configured to collect the second portion of the comminuted material;
a compressor;
The jet mill is in fluid communication with the cyclonic separator, the cyclonic separator is in fluid communication with the first collector and the second collector, the second collector with the compressor. in fluid communication, said compressor being in fluid communication with said jet mill;
The system, wherein the compressor is configured to continuously provide circulating fluid to the jet mill, the cyclone separator, and the second collector.

a feed hopper;
18. The system of claim 17 , further comprising a conveyor feeder configured to transport material from the feed hopper to the jet mill.

19. The system of claim 18 , further comprising a housing containing the conveyor feeder therein, the housing configured to receive positive pressure provided by the circulating fluid.

20. The system of claim 19 , wherein the housing includes one or more vents to allow the circulating fluid to escape from the housing.

19. The system of claim 18 , wherein the conveyor feeder comprises a screw conveyor or belt conveyor .

The jet mill is
a grinding chamber;
a manifold having at least one first fluid inlet and surrounding the grinding chamber;
(i) a feed tube assembly including a hollow body having a second fluid inlet and (ii) a material inlet;
The grinding chamber is in fluid communication with the manifold and with the hollow body of the feed tube assembly, and the at least one first fluid inlet supplies the circulating fluid to the grinding chamber. 18. The system of claim 17 , wherein the second fluid inlet is configured to supply the circulating fluid to the feeder.

23. The system of claim 22 , wherein the feed tube assembly is a venturi-type feeder.

A method for comminuting one or more substances, comprising:
Providing a system according to any one of claims 17-23 ;
circulating the circulating fluid through the system with the compressor;
placing particles of said material in said jet mill.