Limited Time Offer

Claim a 25% discount on all eLearning courses (including credentials) with code ELEARN25.

Offer is valid from March 10-31. Public courses excluded from promo. 

Strategies for Acid Gas Enrichment and Tail Gas Treatment:

Source: AIChE
  • Type:
    Conference Presentation
  • Checkout

    Checkout

    Do you already own this?

    Pricing


    Individuals

    AIChE Member Credits 0.5
    AIChE Members $15.00
    AIChE Fuels and Petrochemicals Division Members Free
    AIChE Graduate Student Members Free
    AIChE Undergraduate Student Members Free
    Non-Members $25.00
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    May 1, 2013
  • Duration:
    30 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

Share This Post:

                                                                         Strategies for Acid Gas Enrichment and Tail Gas Treatment:

Special Solvents or Better to Stick With Generic Solvents

Tofik K. Khanmamedov

TKK COMPANY, Sugar Land / Houston, Texas

Abstract

The quality of the acid gas feed stream to sulfur recovery units is crucial for proper operation. In this regard, acid gas streams with low H2S concentration should be enriched with H2S. This is also true for the amine section of tail gas treating units. There are different approaches for acid gas enrichment. One approach is based on using generic N-Methyl-Diethanol Amine (MDEA) with the family of patented HIGHSULF™ processes. Other approaches use more selective and very expensive solvents.

Also there are claims that some specialty solvents allow designing units using relatively smaller equipment than in case of MDEA, there are limited advantages in long term to say the least.

Due to depreciation of the unit in most cases the capital cost is not the primary concern of the clients. Even operating cost based on the use of local sources of power is not the major issue. However, they do seriously care about the costs of the solvents, that they have to purchase annually from the single foreign vendors and this factor limits their freedom of the choice. While this approach might reduce initial capital cost, it could significantly increase the operating costs over time due to the necessity to continue to purchase the expensive specialty solvents from the single vendor.

In most cases, switching from special solvents to generic, less expensive, solvents in the future would require a reduction of the overall unit capacity. Units designed for MDEA based HIGHSULF™ technologies can be easily switched to other specialty solvents within certain capacity constraints.

This paper focuses on advantages of the MDEA based family of HIGHSULF™ processes that require no additional equipment.

Presenter(s): 
Once the content has been viewed and you have attested to it, you will be able to download and print a certificate for PDH credits. If you have already viewed this content, please click here to login.

Checkout

Checkout

Do you already own this?

Pricing


Individuals

AIChE Member Credits 0.5
AIChE Members $15.00
AIChE Fuels and Petrochemicals Division Members Free
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
Non-Members $25.00
Language: