Poppy and the Steam Forum and Power Forum

Welcome to the steam and power forum, a bulletin board dedicated to questions and answers to Steam Plants and Power Generation Plants for steam boilers, turbine generator and heating problems. Dedicated to power plants, power generation, supercritical, and heating plants as well as steam boilers, steam turbine generators, gas turbines or combustion turbines, hrsg, steam heating, pressure vessels, steam line, including ASME questions and more. Remember the forum is made up of volunteers from experts to beginners. Unfortunately, we cannot allow free commercialism that promotes products, services, or sites.
 
The Steam Forum and Power Forum is being sponsored by the following:

Poppy   Steam Forum  

Silica in condensate

Saturday, May 12, 2018   By: Shareef luberef [2259] 0 Stars
We have problem with silica 39PPB+ in condensate polishing package outlet. We use ACF and a mixed bed strong acid/base exchanger. Still silica level is high. can u suggest method to control the silica. We use Desalinated water conductivity 5us/cm max. feed to our DEMIN unit to produce demin. water conductivity 0.1 us/cm max.

can u help me to find the source and control measures?

Post a Reply...
Viewed 282 times

Monday, May 14, 2018   By: Basem Belal [2194] 2 Stars
better to tell us how much the silica in the steam? what is the purpose of your steam? is it for steam turbine? how much P & T ? do you have one boiler or more? are they connected together by saturation steam in any line?
any details will help more.

Post a Reply...
Viewed 272 times

Tuesday, May 15, 2018   By: Ross Burns [390] 5 Stars
I am not sure what your makeup water arrangement looks like, but if you are using ACF -activated carbon filtration- then I can guess that you have a RO reverse osmosis unit inline with it too. As I expressed earlier I am not sure how the ACF applies, except you are either recycling effluent back into the plant for the boilers or you are drawing water from a river or body of water that needs pretreatment of the boiler makeup water because of what is in the water source. So, I can imagine that the source of your Silica SO2 or Silicates SO3 is from the same pretreatment sources. Of course this makes the assumption you have no leaks in your surface condenser if you have one.

Basem Belal has asked a very good set of questions to take the guess work out of the answers. Maybe you can answer his questions.

Ross

Post a Reply...
Viewed 250 times

Thursday, May 17, 2018   By: Murphy [21] 4 Stars
It seems to me that if your condensate polisher is upstream of of your make up water then you have a leak. I think you are going to have to sample the water at each component or heater in the condensate system from the hot well to the condensate polisher to find the source of silica. Seems your infiltration of silica is from your brackish water, which I think you are located where salt water meets the mouth of a river.

I also think you should be measuring the silica in the steam going to the steam turbine generators. It will be problem if you are loosing steam turbine thermal efficiency.

Murphy

Post a Reply...
Viewed 235 times

Monday, May 21, 2018   By: Jim Watts [764] 5 Stars
Your configuration implies a very high pressure boiler and turbine.
You do not say your silica after poishing is high at start of run or at end of run so I will assume it is continuous slippage.
Although it is possible to imagine multiple problems to cause this it is unlikely your operation would have more than one and it needs to supply silica and at the same time degrade your polisher.
I would check your regeneration acid and caustic has not had a change of quality and contains silica.
High slippage can also be due to organic fouling of the anion resin or poor mixing of the mixed bed but you should not have silica in the first place.
Checking silica before the mixed bed should confirm this.

Post a Reply...
Viewed 221 times

Wednesday, May 30, 2018   By: MW [2231] 1 Stars
Please also tell us:

Silica in boiler water
Silica in feed water
Source of condensate
Silica in steam for turbine
Steam pressure / temperaure
Temperature of caustic for regeneration

Post a Reply...
Viewed 178 times

Published on steamforum.com

 

Featured
High Sulfite Residual
By: Ross. [390]

First, I want to say that large amounts of Sodium Sulfite NaSO3 becomes a contaminate because it will produce foaming and other problems, but foaming is the primary problem.

Your 500-psi Water Tube Boiler is seems to have reasonable level of residual Sodium Sulfite NaSO3 remaining in the boiler water. Nice pH too.

Your 300-psi Waste Heat Recovery Boiler has twice what I would expect for Sodium Sulfite NaSO3 at ranging 80-ppm to 100-ppm. pH is good so you are getting a good yield.

As....   Read All
Advertising Info - Click Here!

It's hard not to look at this ad at least once, then you go to the next page an notice it again. Maybe you will not read the message, but you will be thinking about the brand and we call that brand impressions.

About 2/3 of internet traffic is useless traffic and consist mostly of malicous-bad-robots.  However, there are good robots too.  We block bad-robots, and allow the good one's through, but we just do not count the good one's.  We want good straight-brand impressions for our advertisers with human impressions!

Imagine your static or animated display advertisement placed here, and if that is not enough you can include text too to expound on the virtues of your services and or products.    In addition, you can benefit by using our new advertisement feature to have your video included in your ad space.  Wow, make an infomerical with text and a display by combining all features to enhance the readers or audience's experience using your brand.  Ads can be much more than a static display ad. Here is an example of how your video could be used or position in this ad space:

 

Caption: This public domain video shows from TGM - Turbine Generator Maintenance - who provides the Right Plans, Processes, People, Tools and Attitude to provide superior Turbine Generator inspection and repair.  The author of the video is not an advertiser and is being used to show how the video ad can be of value to the reader since you have already being viewing the video.  It is hard not to think about the authors brand after viewing the video ad.  This is the benefit of Branding.

- Ask for our Media Kit -

 

 

A Long-Game that Earns Tomorrow's Sales


Click on this Promotional Advertisement to Contact Us Today!

Good Branding Puts Your Brand or Company in the Front of a Decision-Maker’s Mind for a Purchase either Months from Now or Five-Years in the Future.

Good branding makes your brand or company the leader in a crowded field of other brands or companies vying for your potential or existing client's attention. 

An invitation to the buyer's table to negotiate potential sales from $thousands to $millions of dollars in any of these: Systems sale, Capital Equipment, Upgrades & Modifications,  Repairs, or Capital Project becomes easier now with a recognized brand that thinks forward by brand advertising.

Your advertising will cost you an unbelievable low amount, so ask for our Media Kit that has Specs and Rates. 

Below is some of our demographic data for steam and power forum users will speak for itself:

Bus Sector Percent   Education Percent
Manufacturing 11%   College 51%
Power Gen 20%   Grad School 20%
Chemical & Petroleum 15%      
Medical Facilities 6%      
Pulp & Paper / Forest 7%      
Pharmaceutical 7%      

Our network works hard for you with placements for full coverage on part of the network, or full network placement.  Brand yourself today and don’t miss-out on being invited to your client or future client's table because they forgot you.  Be the leader they will remember and be part of their capital project.  Tomorrow’s clients are your future.

 

Advertising and Marketing Agency for the steam and power forum
PE Marketing, LLC

Branding.jpg

Sponsors/Advertisers
Industrial Training School
 
Industrial Training School - Maintenance
 
Industrial Training School
 
National Assoc of Stationary Operating Engineers
 
Confidentiality, Disclaimer; Policy
STEAM and POWER FORUM
© 2001 to Steam Forum, All Rights Reserved.
PE Marketing LLC is representing the steamforum for advertising and marketing
Valid XHTML 1.0 Transitional