Kiln Heat Utilization

Posted in: , on 27. Jan. 2009 - 13:06

Dear sir

Thanks indeed for your pro-active response. Well taking discussion back to its latent subject, I have something to share with you and perhabs could be the momentum base approach towards WHR system. As of now in WHR boiler for cement plant preheater gas and cooler gas has only been proven out to be source of heat and energy. While googling to get more conscious coverage about WHR scope I discovered the additional source of heat (REFERNCE ALREADY ATTACHED IN MAIL), perhaps that could have a considerable concern from heat source point of view.

The idea is to install the heat radiation absorbing surface in circumference of Kiln to absorve the radiation heat. It sounds of relatively low stake in heat source , but having systematically and technically installed the absorving surface, one can get the considerable heat . I don't know upto what level it may patronage the system, but seems of mountable reason to accentuate ones focus. Here the fluid being used is oil , which absorb the sensible heat of kiln, therby transferring it to heatexchanger for steam production. Apparantly this system may improve the whr boiler efficiency resulting in inching-up the steam qty.

However this additionally technological patent has not been used by any of our domestic cement manufacturer, and for global I don't have the conscious information whether its been brought into system or not, but its addition of heat into the system couple with its advantage of not having the effect on kiln shell may require to be taken into consideration. Well iam pretty much inclined to believe on using this technology, but due to lack of expertise I couldn't make any prognosis data.

Hope your intensified engineering approach with could throw a actionable response

Now I have couple of query to be answered by you

1) Having perceived above innovativeness in technology , how viable it is , whether really it can be brought it into play and decisive role or not . If not what could be the predictable disadvantages

2) Also conceiving your expertise in energy sector, I will glad to know that how could we predict the Energy generation (IN MEGA WATT) by having the total heat input . Idea behind for same is, as iam working on getting the total potentiality for WHR system in cement company , given the fact that I am having total TPH production in India consolidating all cement companies.

Awaiting for your valuable reply

- Show quoted text -

kj

Re: Kiln Heat Utilization

Posted on 27. Jan. 2009 - 12:41

Useful WHR for steam generation should be fairly high in temperature. What is your skin temperature? Have you done your homework & calculated the enthalpy emissions? Your absorbent shroud will have a very large area which will probably diffuse the radiant heat thereby producing a temperature drop. You will need clearance for observation & maintenance purposes.

Your proposal is to supplement the kiln lining with a kiln lagging, albeit a WHR lagging.

Have you balanced the recoverable heat against the coolant circulation pump demand? There will be considerable mechanical losses in the very large heat exchanger proposed.

Re: Kiln Heat Utilization

Posted on 27. Jan. 2009 - 12:41

Useful WHR for steam generation should be fairly high in temperature. What is your skin temperature? Have you done your homework & calculated the enthalpy emissions? Your absorbent shroud will have a very large area which will probably diffuse the radiant heat thereby producing a temperature drop. You will need clearance for observation & maintenance purposes.

Your proposal is to supplement the kiln lining with a kiln lagging, albeit a WHR lagging.

Have you balanced the recoverable heat against the coolant circulation pump demand? There will be considerable mechanical losses in the very large heat exchanger proposed.

Re: Kiln Heat Utilization

Posted on 27. Jan. 2009 - 01:15

Sir

I think i didnt conviced you . Below is the attachment for apprach to extract radiant heat from kiln. My objective is just to get your view whether this approach which seems to be added advantage in cement company for power generation , whether is ethenticity or not. If no what is disadvantage.

Can you tell me how to convert radiation energy ie 19kcal.ton of clinker into power ie KWH

rahul

Attachments

whr (PDF)

kj

Re: Kiln Heat Utilization

Posted on 27. Jan. 2009 - 01:15

Sir

I think i didnt conviced you . Below is the attachment for apprach to extract radiant heat from kiln. My objective is just to get your view whether this approach which seems to be added advantage in cement company for power generation , whether is ethenticity or not. If no what is disadvantage.

Can you tell me how to convert radiation energy ie 19kcal.ton of clinker into power ie KWH

rahul

Attachments

whr (PDF)

kj