Sulfur Recovery of H2S from gases emitted by heavy crude

HOLA13 - Heavy Oil Latina America Conference & Exhibition, Mexico, 2013
Sulfur Recovery of H2S from gases emitted by heavy crude
Suárez-Domínguez, E.J. (1) Romero-Juárez, L.S.  (1) Hernández-Rodríguez, C.  (1) González Dávila, J.L.  (2)
jsd@mics.edu.mx
1. Mexican Institute of Complex Systems. Tlaxcala no. 111 esq. Av. Jalisco, Col. Unidad Nacional. CP 89410 Cd. Madero, Tam.
2. Centro de Investigación de Crudo Extrapesado y Recuperación Mejorada. Calle 4 No. 170 A x 15. D-713. Col. Montecristo. Mérida, Yuc.
ABSTRACT
The recovery of sulfur refers to the process of gas denaturalization, which recovers elementary sulfates from gaseous hydrogen sulfide. H2S is released to the atmosphere mainly in gas form, coming into contact with it forms SO3 and H2SO4. SO3 can decompose ever more and is one of the basic elements of the acid rain.
Today the industry must worry for reducing to the environmental damage; one of ways is to reduce emissions of gases that contain sulfur, and to take advantage of this to their recovery from H2S. There are several methods to recover sulfur, some with disadvantages as being too expensive or many steps with a complex infraestructure.
The Mexican company Geo Estratos S.A. de C.V. as a solution proposes the utilization of their product H2S-End. This product allows removing the H2S present in the gas turning it into elementary sulfur; in addition, the product has the advantage of being reused by regenerating the oxidizing treatment, but should be used in gases with traces of hydrogen sulfide, that is to say not very bitter gases. A posttreatment to the obtained sulfur may allow using it in its pure form (up to 95%).
Experiments were realized by triplicate with known amounts of the product, together with volumes of H2S also known. The precipitated sulfur was subjected to washings and gravimetrically was determined the quantity obtained. Achieved yields ranging between 97-98% compared to the theoretical yield of the process.
About the results obtained at the laboratory the product offers a high performance recovery. This means that each cubic meter of H2S End will consume approximately 16.5-16.6 Kg of H2S (equivalent to 13850-13990 liters in normal conditions of pure gas), it will produce about 15.5-15.6 Kg of elementary sulfur of substantial purity.
Free Full Text Source: http://geoestratos.info/documentos/articulosPub/h2s/HOLA13-131.pdf