gaseous emissions from coal stockpiles

[xing]

Dear all,

I need to write a review on gaseous emissions from coal stockpiles. I wonder if you have done some research and/or you know any research progress on this topic. Can you please help me or direct me to a right direction? My email address is [e-mail]. Any information is welcome.

Thanks in advance for your help.

Xing Zhang

[John]

May 31, 2011 11:21:09 GMT -5 xing said:

Dear all,

I need to write a review on gaseous emissions from coal stockpiles. I wonder if you have done some research and/or you know any research progress on this topic. Can you please help me or direct me to a right direction? My email address is [e-mail]. Any information is welcome.

Thanks in advance for your help.

Xing Zhang

I'm not sure if anyone here can help you with that information, BUT, we do have a few ex mining officials that may have touched on that subject at College.

Keep checking back to see what they come up with to your question.

[xing]

Thanks indeed, John!!

[philford734]

I had to work on the screens one week looking after the loading of large coal bunkers. I was most supprised one day when the ventilation officer came to the top of the bunker and tested for methane with a probe in all 4 bunkers. He found nothing, he said that it was an area that somebody was conducting tests on at many pits. He ha been monitoring for many months but had not detected anything.
I was supprised because there was a pot belly stove at the top of the bunkers to help stop the loading traversing conveyor from freezing in the Winter. We had that glowing red to heat our brew cans for tea.

[bulwellbrian]

When I worked in Cinderhill Laboratory in the 1960's the concern was spontanious combustion in stock piles not Methane.

[smshogun]

I may be able to throw some light on this subject from a paper I read many years ago; and it wasn't applicable to the UK and most of Europe.

Many years ago the British electricity generation industry used something called semi-raw coal to power its electricity generation and power stations used to crush their own coal down to size to their specific requirements; as they changed through evolution of the industry they used a blend which is a mixture of rock and coal and the coal industry blended and crushed the blend to specific requirements for power stations.

In many third world countries or those lacking investment in electricity they used raw coal and not a blend, this was just pure coal washed and dropped into railway wagons without crushing or sizing and it went straight to the power station as it was cheaper through not having to be processed as the power stations crushed and sized their own coal to suit their boilers. When coal was dropped at the power station they ran it up a large conveyor to the stock site and this conveyor ran at a steep angle and fed something looking like a large silo, the conveyor dropped coal from a great height into this silo device and it dropped a considerable distance onto specially designed breaker bars which broke the large lumps of raw coal up into smaller pieces for free, it was then stockpiled.

As it was smashed in these silos using nothing but gravity and a large head the lumps now much smaller discharged through multiple chutes so numerous front loaders could transport it to the stockpile at the same time, they deposited it on the stock pile and as it was smashed and for a couple of hours after it released naturally trapped methane. 

[merlin]

i saw a deputy once shove  a msa into some spillage under the belt  and the readings whent over

[John]

May 19, 2015 5:44:17 GMT -5 merlin said:

i saw a deputy once shove  a msa into some spillage under the belt  and the readings whent over

You just reminded me of an incident at Boulby, although being under the miscellaneous mines act, we were officially a Safety Lamp mine due to the methane and other flammable gases.

I'd been called to a drill rig with no lights, rather than do it the "correct way" I chose to cure the problem the easy way. I'd an open circuit on one core of a three core cable so was "ringing it out" with power on, 24 volts for the lighting circuit. I heard a round of shots being fired, no problem to me, but then a shotfirer appeared out of nowhere with his D6 held up high and the meter pegged...... I nearly crapped myself, he was gasping, knock the power off, knock the power off.
I was a lot more careful after that.

We used to test farts with D6 methanometers too!! Amazing what readings we used to get.LOL

[merlin]

when we had coal houses the smell was like returns airways

[colly0410]

Yes I remember opening the coalhouse door & the main return smell would hit you, just needed the scrubbed diesel exhaust smell to complete the illusion of being back down the pit...