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MULTI-LAYER STRUCTURED/RANDOM PACKING DESIGN IN A COMMON SINGLE PACKED BED

IP.com Disclosure Number: IPCOM000249874D
Publication Date: 2017-Apr-20
Document File: 7 page(s) / 48K

Publishing Venue

The IP.com Prior Art Database

Abstract

Embodiments of the subject matter disclosed herein relate to systems that control flue gas emissions. One or more embodiments described herein refer to flue gas conditioning direct contact devices for acid gas reduction and flue gas cooling, for example, a typical flue gas conditioning column such as a Direct Contact Cooler (DCC). In the DCC mass transfer, acid gas scrubbing, is one critical target to achieve. Flue gas cooling is the second process performance target to meet in order to maintain the overall process economics.

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MULTI-LAYER STRUCTURED/RANDOM PACKING DESIGN IN A COMMON SINGLE PACKED BED

FIELD

[0001]                  Embodiments of the subject matter disclosed herein relate to systems that control flue gas emissions.

BACKGROUND

[0002]                  Various gas/liquid contacting systems exist, such as an absorber used to remove pollutants such as NOx, SOx, CO2.  In a typical contact device, liquid is introduced at the top of the contact device (and flows downward) and the gas is introduced at the bottom and flows upwards. 

[0003]                  One or more embodiments described herein refer to flue gas conditioning direct contact devices for acid gas reduction and flue gas cooling, for example, a typical flue gas conditioning column such as a Direct Contact Cooler (DCC).  In the DCC mass transfer, acid gas scrubbing, is one critical target to achieve.  Flue gas cooling is the second process performance target to meet in order to maintain the overall process economics.

[0004]                  Typically, the flue gas from the up-stream process is typically at a temperature of higher than the optimum temperature required for the downstream process steps.  The flue gas pressure is nearly atmospheric.

[0005]                  The flue gas composition consist of nitrogen, carbon dioxide, water, oxygen and trace components like Sulphur oxides, Nitrogen oxides, particulates, etc..  Sulphur oxide (SO2) must be removed to a low threshold concentration in order to avoid material problems due to excessive sulfuric acid formation.  For the overall process economics a reduction of total flue gas temperature/volume is beneficial, too.

Brief Description

[0006]                  In one embodiment, a direct contact device system includes one or more structured packing layers configured to improve the distribution of gas and liquid within the packing.

DETAILED DESCRIPTION

[0007]                  In one or more embodiments, the contact device may include a structured packing to increase the contact between the gas and liquid phases.

[0008]                  One or more embodiments of the inventive subject matter described herein provide direct contact device systems and methods that improve the efficiency of the direct contact device and reduce the total packed bed height of the device.

[0009]                  At least one technical effect of the inventive subject matter described herein is the improved plant life-time capital and reduced operational expenses.

[0010]                  Other embodiments of the inventive subject matter described herein provide direct contact device systems and methods that include a multi-layered structured/random packing design in a single packed bed. 

[0011]                  At least one technical effect of the inventive subject matter is to take advantage of the normal reduction of volumetric flow within the packed bed.  In general, volumetric flow is highest at the flue gas entry point and is gradually reduced as it flows through the bed.  The flow is reduced due to cooling of the flue gas against the counter-current liquid flow.  The flow is reduced as well due to water condensation.

[0012]                  At least one tech...