Gallery, Projects and General > How do I??

One for the Chemists - water softening solution.

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awemawson:
The manual that I have for this beast specifies Karcher part number 2.780-003.0 which is a 5 litre bottle of the 'Calcium Inhibitor'

Google finds this as a product (see .pdf attached) but I cant find a Material Data Safety Sheet for it.

Google also translates this into a Nato Stock Number of  6850-12-175-4344 but again I can't find any specific details of what it is.

From the .pdf it seems to be a brownish purple colour  :scratch:

Anyone got contacts that can turn NSN numbers into physical reality ?

PekkaNF:
You do have interesting stuff.

I have been wondering how these water softening stuff works. Typical to me I found that zeolite () does not work on boilers:

http://hardsoftwater.com/zeolite-process-for-water-softening/
he softening water by this process is used for laundry process and cannot be used for boiler purpose. Because this water softening system contains NaHCO3 in the water; when this water is heated, it produces CO2 which is corrosive for boilerplates.

So, because I am noob - I google:
http://www.nationwideboiler.com/boiler-blog/the-water-softener-what-why-and-how.html
The Chemical Process – Ion Exchange
The Cleaning Process – Regeneration

So, I know that this might be usefull and very similar that has been discussed before. One more serach..
http://www.waterprofessionals.com/learning-center/softening/
Getting closer isn't it?

And one link further - bottom of the page:
http://www.waterprofessionals.com/learning-center/ion-exchange/

Do we have a winner? Or we are not in Kansas anymore?

Regeneration

The "reactivation" process is called regeneration and is carried out using a strong acid for the cation (as a source of hydronium ions) and liquid caustic (sodium hydroxide) as a source of hydroxyl ions for the anion. Resin is regenerated on site using hydrochloric or sulfuric acid and sodium hydroxide (caustic) to regenerate the cation and anion respectively. Controls cause the resin to backwash and then draw a set amount of regenerant chemical for a specified period of time and at a specified flowrate, followed by a slow and fast rinse. In the case of mixed bed resin, a controlled backwash causes the resin to separate and two manifolds function to direct acid to the cation and caustic to the anion.

So, How is the plumbing and is there a holding vessel that softens the water + pluming to regenerate it?

Pekka

awemawson:
No, the feed water is only 'treated' by dosing with this mystery liquid.

Cold water passes through a venturi that draws the liquid into the stream (as long as the release valve is opened by the electronic timer) and then travels on into the coils of the diesel powered burner, emerging at a controlled temperature which can exceed 100 deg C. It has a 'dry steam' facility whereby the water flow is halved and steam at 140-150 deg C emerges ready to take your skin off  :bugeye:

awemawson:
Link to my original post on this device with pictures:

https://madmodder.net/index.php/topic,11079.0.html

RotarySMP:
My understanding (which is not very robust) of an Ion exchanger, is that it will have two chambers. In the first, the cathion exchanger the HCi is added, so the disassociated H+ ions replace the Ca+ ions which then fall out. In the second chamber, the anion exchanger, the NaOH is added, with the disassociated Hydroxide ions binding with the carbonates.   

Of course it could be completely different.
Mark

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