9 replies to this topic

[mohammad reza]

Dear All

 

Would you please let me know how i can calculate H2S content in sour water which will be separated from Hydrocarbon in Atmospheric distillation column  overhead accumulated drum?

 

Thanks in advance.

[P.K.Rao]

Please refer to IS 3025 (Indian Standard 3025). It is a standard chemical iodometric method. You can get the standard . at the address given below. The method is applicable to  samples containing 1 to 30 mg sulfide. Vary the quantity of sample or dilute with distilled water if sulfides are more.

 

Bureau of Indian Standards

Manak Bhavan

9 Bahadur Shah Zafar Marg

New Delhi - 110002

[mohammad reza]

Dear Mr. Rap
I want to know how can I estimate H2S contain in simulating software or calculation not by sampling..

[mohammad reza]

Dear Mr. Rap
I want to know how can I estimate H2S contain in simulating software or calculation not by sampling..

[daniwibowo8]

Dear Reza,

 

As i know HCAMS able to do simulations but not for H2S. It's able to simulate sulphur distribution in product with your crude assay data base and cut range. I dont know if any software able to do the same for H2S.

Sulphur in crude able to form H2S in crude preheat (around 230oC).

 

Thx

[P.K.Rao]

I am not aware of any software predicting H2S in sour water.

[mohammad reza]

Dears
If process simulator (for example , HYSYS, Pro II) , how can estimate H2S content in water.
I am sure , lincesor extract this data from process simulator..
I found some graph which shows H2S solubility in water in different temperature, but I can not rely on it.

[shvet]

 
If process simulator (for example , HYSYS, Pro II) , how can estimate H2S content in water.
 .

 

SimSci Pro/II - GPSA sour water

AspenTech HYSYS and Aspen+ - API sour water

ProMAX - special package

 

But I wouldn't trust to all of them. In your case there is 3 phase and all of this packages are designed for preliminary sour water stripping modelling where only 2 phases exist. As per my experience lincesors rely on real plant data.

Edited by shvet, 07 July 2016 - 10:53 PM.

[mohammad reza]

 

 
If process simulator (for example , HYSYS, Pro II) , how can estimate H2S content in water.
 .

 

SimSci Pro/II - GPSA sour water

AspenTech HYSYS and Aspen+ - API sour water

ProMAX - special package

 

But I wouldn't trust to all of them. In your case there is 3 phase and all of this packages are designed for preliminary sour water stripping modelling where only 2 phases exist. As per my experience lincesors rely on real plant data.

 

Since simulation is performed by PRO/II , i check the sour water H2S content in sour water with "GPSA sour water " property package in relux drum. 

GPAS sour water equation of state can estimated H2S in sour water , but the problem is that the water content in hydrocarbon phase will be increase much more than excepted. 

[RockDock]

I have designed several sour water strippers with ProMax. It is the most accurate simulator I have found for this process. I know ProMax can model a three phase sour column, too. I have not done it, but I would recommend you call the ProMax guys for help with that.