Manufacturers of high-pressure flash steam utilization technologies for gasifiers
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Seeking manufacturers of high-pressure flash steam utilization technologies for gasification furnaces.
There are two types of high-pressure flash steam utilization methods that I am aware of: one is in the form of a graywater heater with indirect heat exchange, and the other is in the form of an evaporation hot water tower with direct heat exchange. Is the high-pressure flash steam utilization technology mentioned by the poster another new type of utilization technique? ? ?
Recycling the thermal energy of high-pressure flash steam to generate low-grade steam for power generation – I wonder which company has succeeded in implementing this?
The pressure of the high-pressure flash vapor is less than 10 kilograms (around 0.7 MPa), and the temperature is only around the saturation temperature of 170–180 degrees. Moreover, the amount of flash steam is not large, and the steam also contains ash along with water. If it’s used for generating electricity, I don’t think it’s a good idea. Moreover, the absence of flash steam to heat the high-pressure ash water returning to gasification will inevitably significantly reduce the gas-to-water vapor ratio in the outlet area, which in turn will have an impact on the operation of subsequent conversion units, such as overheating of the conversion furnace.
Could the pressure and thermal energy of the high-pressure black water discharged from the gasifier or scrubber tower be utilized to generate electricity, similar to the liquid expansion turbines used in air separation?
The high-pressure flash steam utilization technology is as described on the second floor: one method involves indirect heat exchange after flashing (Texaco), while the other involves direct heat exchange within the flash tank itself (four-nozzle evaporative hot water tower)
This is actually feasible; as far as I know, some organizations are already working on developing this technology, which uses high-pressure black water expansion to generate power and recover energy
It is hoped that the problems related to high pressure differences and high solid content can be resolved; if the issues associated with hydrogen handling can also be addressed, then coal-to-oil conversion and suspended-bed processes will not only have effective methods for pressure reduction but will also generate economic benefits
We recycle and compress it before sending it for purification