Pressure measurement of syngas produced by water-coal slurry gasification
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For a gasifier that produces syngas from water-coal slurry, the main components of which are CH4, H2, and CO, with a pressure of 6.7 MPaG and a temperature of 250°C, how should the pressure transmitter be selected? Is it necessary to seal the assembly with a diaphragm and a capillary? Are two valve assemblies needed? Newbie here, thank you all for your generous advice.
This post was last edited by RongshuOfDream on 2017-5-19 at 17:34. For selection issues, it is recommended to have a professional design firm prepare a specification sheet so that a specialized manufacturer can select the appropriate model; then you can check whether it meets the requirements for use in the manufacturing process. Judging from your situation, using a single-flange design would be too costly. With such high temperatures and pressures, it’s better to use a conventional pressure transmitter along with an isolation package. If one really wants to use a single-flange pressure transmitter of the high-temperature type, then there is no such thing as a double-valve assembly for single-flange transmitters; unless the root valve and the discharge valve are combined together, that could be considered a double-valve assembly.