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Systems and methods for maintaining sulfur concentration in a syngas to reduce metal dusting in downstream components

a technology of sulfur concentration and downstream components, which is applied in the direction of combustible gas production, combustible gas purification/modification, chemistry apparatus and processes, etc., can solve the problems of metal dusting in downstream components such as exchanger tubes, metal dusting also known as carburization, and the sulfur level in these gasifier feeds can be below the minimum level of sulfur needed

Inactive Publication Date: 2012-07-05
KELLOGG BROWN & ROOT LLC
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Problems solved by technology

Downstream components made of metal, such as exchanger tubes, can suffer from metal dusting, also known as carburization, due to interaction with the syngas, particularly at high temperatures.
These two approaches, however, require expensive modifications and / or replacement of components used in existing gasifier systems.
The sulfur levels in these gasifier feeds, however, can be below the minimum level of sulfur needed to reduce or prevent metal dusting.

Method used

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  • Systems and methods for maintaining sulfur concentration in a syngas to reduce metal dusting in downstream components
  • Systems and methods for maintaining sulfur concentration in a syngas to reduce metal dusting in downstream components

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Embodiment Construction

[0010]Systems and methods for maintaining a sulfur concentration in a syngas are provided. The method can include combining sulfur and a carbonaceous material to produce a sulfur containing carbonaceous feed. The method can also include gasifying at least a portion of the sulfur containing carbonaceous feed to produce a syngas and detecting a sulfur concentration in the syngas. The method can also include adjusting an amount of the sulfur combined with the carbonaceous material based on the detected sulfur concentration.

[0011]FIG. 1 depicts a schematic of an illustrative gasification system 100 for producing a syngas via line 151 having a sulfur concentration sufficient to reduce metal dusting in components downstream of a gasifier 150, according to one or more embodiments. The gasification system 100 can include one or more lock hoppers or storage bins 110, 130 for feeding one or more gasifier feed systems 140, wherein the gasifier feeds can be stored or treated prior to entering t...

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Abstract

Systems and methods for maintaining a sulfur concentration in a syngas are provided. The method can include combining sulfur and a carbonaceous material to produce a sulfur containing carbonaceous feed. The method can also include gasifying at least a portion of the sulfur containing carbonaceous feed to produce a syngas and detecting a sulfur concentration in the syngas. The method can further include adjusting an amount of the sulfur combined with the carbonaceous material based on the detected sulfur concentration.

Description

BACKGROUND[0001]1. Field[0002]Embodiments described generally relate to systems and methods for producing synthesis gas. More particularly, such embodiments relate to systems and methods for maintaining sulfur concentration in a syngas to reduce metal dusting in downstream components.[0003]2. Description of the Related Art[0004]A gasifier produces synthesis gas or “syngas” and the syngas can be further processed downstream. Downstream components made of metal, such as exchanger tubes, can suffer from metal dusting, also known as carburization, due to interaction with the syngas, particularly at high temperatures. The term “metal dusting” refers to severe and aggressive corrosion that can disintegrate metal into dust or powder.[0005]Various approaches have been used to reduce the causes and / or effects of metal dusting. One approach has been selecting alloys that are resistant to metal dusting for use in the downstream components. Another approach has been to apply a coating to the do...

Claims

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Application Information

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IPC IPC(8): C10J3/72
CPCC10J3/54C10J3/723C10J2300/0959C10J2300/1823C10J3/485C10J2200/156C10J3/726C10K1/024C10J2300/0903C10J2300/093C10J2300/0983C10J3/506
Inventor ABUGHAZALEH, JOHN
Owner KELLOGG BROWN & ROOT LLC
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