Caustic Scrubber Designs for H2S Removal from Refinery Gas Streams
ثبت نشده
چکیده
Caustic scrubbing is a technology that has been used for the removal of H2S and other acid species from gases in different industries for many years. Improvements in design and control strategies, favorable prices for caustic compared with other non-regenerable H2S scavenging chemicals, and the potential for sales value for the NaHS (sodium bisulfide) product have made caustic scrubbing an economic and viable option for some refinery streams. Caustic scrubber designs are available to treat sour refinery fuel gas both with and without CO2, sour water stripper (SWS) gas, acid gas from amine units, and other refinery gas streams. This article will review caustic scrubber designs applicable to these applications.
منابع مشابه
Novel Amine Modified Nanoporous SBA-15 Sorbent for the Removal of H2S from Gas Streams in the Presence of CH4 (RESEARCH NOTE)
A new sorbent has been developed by grafting Hexamethylenetetramine on a mesoporous molecular sieve (SBA-15) by wet impregnation method. This sorbent (Hexamine/SBA-15) has been characterized using N2 physisorption, X-ray diffraction (XRD) at low angles (2θ°) and FT-IR. To investigate the H2S removal capacity of this adsorbent from CH4-containing gas mixtures, the breakthrough tests have been pe...
متن کاملRemoval of H2S from Synthetic Waste Gas Streams Using a Biotrickling Filter
The removal of hydrogen sulfide (H2S) from airstreams was studied in a biotrickling filter packed with porous lava as a carrier of Thiobacillus thioparus (DSM5368) with counter current flows of the air and liquid streams. The effect of operating parameters on biotrickling filter performance was studied. Experiments were performed at different empty bed residence times (9-60 sec), and...
متن کاملRemoval of H2S and Mercaptan from Outlet Gases of Kermanshah Refinery Using Modified Adsorbents (Bentonite and Sludge)
In this work, adsorbents, namely bentonite and sludge, modified by iron and copper were used to remove the H2S and mercaptan from Kermanshah refinery. The used adsorbents are inexpensive materials, which substantially decrease the operational costs. The structure of the adsorbents was analyzed using scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDX). Th...
متن کاملA Lower-cost Approach to Treating Low-volume Refinery Spent Caustic Streams
Electro-oxidation, also called electrochemical advanced oxidation, uses electricity to generate hydroxyl radicals to perform oxidation in wastewater treatment. A new commercially available electro-oxidation process—Zimpro® Electro-oxidation (ZEO)—is especially effective for treating the highly problematic spent caustic streams produced by sweetening operations in petroleum refineries and ethyle...
متن کاملSelecting Optimal Acid Gas Enrichment Configuration For Khangiran Natural Gas Refinery
 Performance and capacity of sulfur recovery unit (SRU) are greatly affected by the H2S:CO2 ratio of the acid gas stream. The acid gases in Iran contain around 35 mol% H2S and 60 mol% CO2. This low concentration of H2S calls for more complex sulfur plant, larger equipments, and higher costs. Acid gas enrichment processes (AGE) is run to upgrade low quality acid gas collected from gas treating...
متن کامل