Shrimp shell protein is extracted and concentrated for use as feed; the evaporation volume is 4-5 tons. I hope everyone can offer their suggestions, as the project is still in the construction phase.

OP, you can use an RO membrane for concentration first and then a evaporator, which can save a significant amount of energy consumption

I’ve never seen this thing before. I wonder if this thing will generate wastewater? How much water is produced? Waiting for the experts to give guidance! !

For low-pressure applications, vacuum pumping and steam compression are used. When the evaporation temperature rises, the vapor temperature of the liquid is too low; saturated steam is not sufficient to serve as a heat source for evaporation. A steam compressor is then used to raise the temperature, but it is necessary to supply steam through a water distributor as well as cool the system in order to achieve the desired temperature. I can’t remember any other issues

The RO membrane is used for concentration, and after that, evaporation takes place using an evaporator; this prevents the evaporator’s capacity from being used solely for evaporating water. The MVR evaporator makes use of the steam generated during the evaporation and separation of the material – this steam is known as secondary steam, and it serves as a heat source that the steam compressor uses to compress and raise the temperature

I answered a few of those questions: The first question is that an MVR evaporator creates a vacuum by using a steam compressor to extract the steam generated during evaporation from the evaporator. The rate at which steam is extracted and the rate at which it is generated reach an equilibrium at a certain temperature; at this point, the saturated vapor pressure of the medium corresponds to the vacuum level of the MVR evaporator at that time. The second issue is that the compression ratio of a compressor is an important parameter in its selection; it determines the theoretical power required to compress a unit mass of steam. Temperature rise refers to the increase in temperature of steam before and after compression; according to theoretical calculations for compressors, there are adiabatic temperature rise and polytropic temperature rise. It is an important parameter for evaluating compressor performance. The third issue: non-condensable gases are those that cannot be compressed by a compressor; they are generally small-molecule gases. Since such gases cannot be compressed in a compressor to become high-temperature, high-pressure gases, they can only increase their temperature through heat transfer, thereby wasting the mechanical power of the compressor and reducing the efficiency of converting mechanical energy into internal energy. The fourth issue is that when a Roots compressor performs steam compression, there are certain heat losses (including mechanical heat losses and quenching heat losses), so mechanical energy cannot be completely converted into internal energy. However, the mass of the steam remains unchanged before and after it enters the compressor; in fact, as some of the quenching water turns into steam, the amount of steam after quenching increases. I can’t answer the fifth question; you’ll have to figure it out on your own. However, steam compression is generally used for the treatment of the concentrated stream from RO membranes.