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Sour gas combustion using in-situ oxygen production and chemical looping combustion

A technology of chemical chain combustion and acid gas, which is applied in the direction of fuel burning in molten state, fluidized bed combustion equipment, oxygen/ozone/oxide/hydroxide, etc., which can solve the problem of no high cost and avoid direct contact , fully transformed effect

Inactive Publication Date: 2016-10-12
SAUDI ARABIAN OIL CO
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  • Abstract
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Benefits of technology

This patented process allows for better control on how much carbon dioxide emitted from fossil fuels occurs during combustion compared with traditional methods like burning them or producing energy through various chemical means such as electricity production. It also prevents excessive nitrogen oxides produced when making certain types of fertile materials due to incomplete reduction of sulfur compounds caused by high temperatures used at this stage. Overall, these technical improvements improve efficiency and reduce harmful environmental pollution associated therewith.

Problems solved by technology

The technical problem addressed in this patented technology relates to reducing greenhouse gas emission during coal burning operations through various techniques like catalyst regenerative pyrodesis (CCL) and chemistry loop ignition (CIE). Current solutions involve adding new materials into the flue gas flow path beforehand, leading to costs and complexity issues. Additionally, existing methods may result in decreasing effectiveness caused by sulfur containing compound production.

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  • Sour gas combustion using in-situ oxygen production and chemical looping combustion

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Embodiment Construction

[0017] As mentioned earlier, chemical looping combustion (CLC) usually employs a dual fluidized bed system (circulating fluidized bed process) in which metal oxides are used as bed materials to provide fuel in the reactor. Oxygen for combustion. The reduced metal oxides are then transferred to the second bed (air reactor) and re-oxidized and reintroduced back to the fuel reactor to complete the cycle. Therefore, chemical looping combustion (CLC) uses two or more reactions to complete the oxidation of hydrocarbon fuels. In its simplest form, an oxygen-carrying species (usually a metal) is first oxidized in air to form an oxide. Then, the oxide is reduced by the hydrocarbon as reducing agent in the second reaction.

[0018] The CLC process of the present invention aims to overcome the deficiencies associated with traditional CLC processes of acid gas combustion. As stated, unlike conventional CLC processes where the acid gas is in direct contact with the oxygen carrier (e.g.,...

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Abstract

A chemical looping combustion (CLC) process for sour gas combustion includes a number of reaction zones and is configured to provide in-situ oxygen production and in-situ removal of S02 from a product gas stream by reacting the SO2 with a calcium-based sorbent at a location within one reaction zone. The CLC process is also configured such that the in-situ oxygen production results from the use of a metal oxide oxygen carrier which is purposely located such that it does not directly contact the sour gas, thereby eliminating the generation of undesirable sulfur-based metal oxides.

Description

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Claims

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Application Information

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Owner SAUDI ARABIAN OIL CO
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