Does anyone have experience with steam flow control valves in supercritical steam cycles?
What types of problems are encountered with the turbine control valves (erosion, vibration, etc.)?
Are there specific issues that arise from their use in supercritical systems compared to subcritical...
How much chloride (HCl) is normally found in the flue gas from a coal fired boiler? Do some types of coal have higher concentrations of chloride than others?
Does anyone have experience with corrosion of the separation plates in an electrostatic precipitator downstream of a spray dry scrubber (for SOx removal)?
What is the role of chlorides in corrosion downstream of the scrubber? The scrubber makeup water is the salty reject water from a reverse...
Does anyone have experience with corrosion of the separation plates in an electrostatic precipitator downstream of a spray dry scrubber (for SOx removal)?
What is the role of chlorides in corrosion downstream of the scrubber? The scrubber makeup water is the salty reject water from a reverse...
What is the recommended operating temperature range for electrostatic precipitators installed after a spray dry scrubber?
How close to the dewpoint can the temperature be at the outlet of the scrubber without corrosion and deposition in the electrostatic precipitator?
Thanks.
How do you evaluate the fitness for service of a piping component that has localized wall thinning, not a crack? The wall thinning is a result of corrosion and flow accelerated corrosion.
Is there a method to determine the likelihood of a "break before leak" or "leak before break"?
What is the effect of steam on rigid polyurethane closed cell foam? At what steam temperature would the foam melt in the absence of oxygen? At what temperature would it burn if oxygen is present?
Does anyone have experience with preinsulated piping installed underground in a wet environment (high water table)? What materials are recommended for the insulation, conduit and outer shell?
Have you experienced ID corrosion of the steel conduit due to water ingress into the insulated annulus...
Does anyone have experience with preinsulated piping installed underground in a wet environment (high water table)? What materials are recommended for the insulation, conduit and outer shell?
Have you experienced ID corrosion of the steel conduit due to water ingress into the insulated annulus...
We are looking for info on experience with the prefabricated, preinsulated Perma-Pipe steam piping, in particular with the Multi-therm 500. Also, what is the maximum temperature and pressure for steam service?
We would like to attach a copper wire to a piece of ductile iron. What is the best method? Is it possible to solder the wire? If so, what solder should be used?
Thank you,
Lee
We are investigating several corrosion monitoring techniques for on-line monitoring and have a few questions:
1. For the Electrical Resistance sensor, we have seen instruments that use two electrodes of different diameters that are both exposed to the flow, instead of both being the same...
What are the welding practices for a weld repair of corroded away or cracked weld at the ID of a 1 in. thick carbon steel boiler drum? What should be the preheat and the post weld heat treatment and stress relief? Can a temper bead welding be a substitute for any preheat or port weld heat...
We have been testing a piezoelectric transducer connected to a small steel waveguide in close proximity to a flow orifice (~ 1 mm). The flow through the orifice should be subsonic since the pressure ratio is only about 0.4 (24 psig inlet, 14.7 psig outlet). However, we have encountered a...
