Need help selecting a heat exchanger?
Thread Content
A highly toxic process medium, containing about 7% solid particles, with particle sizes in the micron or nanometer range； Steam heating is required; what type of heat exchanger can reduce particle deposition? Please help, thank you!
As a supplementary note, the process medium is a liquid material
A vertical shell-and-tube heat exchanger should be able to meet the requirements, with the fluid flowing through the tube side and steam flowing through the shell side.
A powder flow heat exchanger for cooling the alkali will suffice.
A powder flow definitely won’t work; it’s better to use a shell-and-tube heat exchanger
First, determine what material to use, and then select a model based on that material; generally, a shell-and-tube type will suffice!
When choosing a heat exchanger, one should first consider the properties of the fluid, the size of the space available, and one’s budget... Since the fluid is toxic, plate-type exchangers are definitely not an option; this leaves shell-and-tube or shell-and-plate types... Decide which type to use based on the available space, and then make the final decision based on cost
Space and cost are not a concern; the main issue is to eliminate or reduce particle deposition
For highly toxic media, it is recommended to use a detachable spiral plate heat exchanger! Large channels, fast flow rates, and thick heat exchanger plates – guaranteed reliability! Shell-and-tube is also okay! It’s that the heat exchange tubes in the tubular type are relatively thin, so their service life is limited! Be sure to check it after using it for a year or two! Because it’s highly toxic! So it’s better to be cautious!
There is a type of plate heat exchanger known as a semi-welded plate heat exchanger, which is also called an ammonia evaporator. On one side, there is a sealed channel that is welded in place; therefore, no leakage occurs since there are no gaskets used