[Gasification] Gasifier Bed leve sensor info

Alex English english at kingston.net
Sun Sep 2 09:16:29 CDT 2012

Hi Pals,

What about a  cooled active dip stick for pile top sensing. I am 
currently experimenting with a  heavy plate, or rod, raised and lowered 
on a chain with a float level sensor in between. When the plate rests on 
the chips the chain slackens and drops the sensor plunger through the 
sensor float shutting or breaking a contact. As the chips drop the plate 
falls pulling the sensor through the float. Although I am using this in 
an open top affair, is could be possible to slide it through a seal. If 
that gums up then drive it off a hinged arm. Chiptec has for a long time 
used a hinged arm which passively rides the pile up and down opening and 
closing a switch. That works for under or side fed chips. For chips 
falling from above it could be coupled to a drop plate and an small 
gear-motor to constantly probe the gasifier  like a rescuer searching 
for survivors after an avalanche.
Did I paint a coherent picture?


On 02/09/2012 9:36 AM, Arnt Karlsen wrote:
> On Sun, 2 Sep 2012 10:03:59 +0530 (IST), pals_136 at indiatimes.com wrote
> in message
> <522034149.541911346560439220.JavaMail.root at tilmb18.indiatimes.com>:
>> Hi,
>> Can any one provide information on high temperature bed level
>> sensor/indicator. I want to measure the bed height inside the
>> gasifier. To make it clear, let me tell you that I am working on a
> ..what kinda gasifier, co-current fixed bed, counter flow fluidized
> bed???  You are _not_ clear here.
>> gasifier in which the charcoal is being produced continuously online
> ..how, by free fall sprinkling or augered in from the bottom?
>> and is continuously fed in the reactor for gasification. Now, I want
>> to know the level of the fuel bed inside the gasifier reactor so that
>> I can control the flow of the charcoal inside the gasifier reactor.
>> The temperature inside the gasifier part is around 1150-1200 deg C.
> .."all over the place", or just the combustion zone lens?
> ..absent any word on this, you're stuck with dangling your
> gasifier rig from weight cells.

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