[Gasification] Gasifier construction question

[Urki]

Well indeed, the russian post-war Imbert types had the repair procedure
(in case of a burn through) of cutting off the lower throat, and
replacing it with a steel tube, inside of that being a cast ceramic cone
made of cement and grinded asbest.


Ill. 1.
This depicts the inner tube (reaction chamber).
@ - marks where the ceramic material is
+ - steel ring that bolts onto the tube material to prevent the asbest
cone from falling out


  |            |
  =  o   o   o |
  |\          /|
  | \        / |
  |@ \      / @|
  |@ /      \ @|
  | /        \ |
  |/          \|
  +            +

I hope you still enjoy some ASCII graphics on your friendly terminal...


David G. LeVine wrote:
> In most systems I have seen, the reaction vessel is metal, usually 
> stainless steel.  Has anyone looked at refractory ceramics for this area?
> 
> Looking at the refractories on the web, I see that they need internal 
> reinforcement (i.e. a wire mesh to hold them) and a fairly difficult 
> cure cycle.  However they tend to have lower thermal conductivity 
> (especially when backed with pearlite filled refractories) but are 
> more susceptible to abrasion than stainless steel.
> 
> Anyone else have thoughts on this as a throat material?
> 
> David G. LeVine
> Nashua, NH  03060
> 
>