High-temperature high-pressure particulate removal in coal gasification. Final report 1 Sep 78-1 Jan 80
IGT evaluated sonic agglomeration and crossflow filtration as techniques for removing fine particulates from high-temperature high-pressure gas streams. Preliminary cold-flow tests provided information about the feasibility of solid membrane crossflow filtration and sonic agglomeration to remove 1 to 10-micron particulates from dust-laden gas streams. Subsequent tests were conducted in high-temperature high-pressure equipment at operating conditions up to 265C (509F), and 7000 kPa (1999 psia). The tests showed that the solid membrane crossflow filtration removed at least 98% of the particulates from the 95% fraction of entering gas. Flow rate and membrane pressure differential data were obtained for the solid membrane cross-flow filter test unit of 2-micron pore size. Sonic agglomeration experiments in the cold-flow model used sound intensities and frequencies up to 145 dB and 3 to 13 kHz. These tests showed that particles below 10 microns grew in size. Experiments in an ambient-temperature and high-pressure apparatus showed that for the Hartmann whistle device used in these tests, the power output ad efficiency increased with system operating pressure. Analytical evaluations showed that the thermal flocculation technique requires thermal gradients of 10 to the 6th power C/cm to induce the particle collision necessary for flocculation.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (USA)
- DOE Contract Number:
- GRI-5011-322-0083
- OSTI ID:
- 6494354
- Report Number(s):
- PB-81-113664
- Country of Publication:
- United States
- Language:
- English
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COAL GASIFICATION
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DISTRIBUTION
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HIGH TEMPERATURE
PARTICLE SIZE
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CONTROL
GASIFICATION
POLLUTION CONTROL
SEPARATION PROCESSES
SIZE
THERMOCHEMICAL PROCESSES
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