LTAPE Evaporator
1、Definition:
The LTAPE evaporator isAbbreviation for Low-Temperature, Atmospheric Pressure EvaporatorLow Temperature Atmospheric Pressure EvaporatorA new concept evaporator made of plastic material, utilizing a refrigerant heat pump as energy source and operating under atmospheric pressure.
2、Working Principle:
The LTAPE evaporator's energy source is a single refrigerant heat pump unit, which can provide a heat source of 50~60℃ and a cold source of 15~20℃. During the evaporation process, the heat source heats and atomizes the waste acid to produce acid vapor. The acid vapor is then transported by wind to the condenser, where it is condensed into condensate using the cold source, achieving the purpose of evaporation separation. The entire process is conducted under atmospheric pressure.
3、Application Fields
① Concentration of phosphoric acid and sulfuric acid.
② Recycling, purification, and concentration of volatile acids such as hydrochloric acid, nitric acid, and oxalic acid；
③ Evaporation of other volatile and non-volatile acids；
④ Separation of salts from waste acid.
⑤ Evaporation treatment for ordinary wastewater.
4、Features of LTAPE Evaporator
① Evaporator body, pump, pipeline valves, etc., are all providedPPH, FRP, PTFE, and other organic materials offer excellent corrosion resistance, preventing internal and external, as well as external and internal corrosion of equipment from acid solutions and acid mists.
② Operates at atmospheric pressure and low temperatures, ensuring greater stability in pump operation and a safer working process.And conventional graphite evaporators, enamel pot evaporators are bothOperating at 100℃ does not resolve the sealing issues caused by thermal expansion and contraction, leading to equipment often being corroded and damaged by acid gas leaking from the outside.
③ Our unique heat exchanger, energy-saving unit structural design, and material selection enable the evaporator to withstand the corrosion of concentrated sulfuric acid, nitric acid, and hydrochloric acid for extended periods, capable of treating almost all waste acids; utilizing refrigerant heat pump technology, the overall energy efficiency ratio can reach6.5~7.0, low energy consumption. Operating cost is 180~320 yuan/ton for recovered acid.
④ The refrigerant heat pump uses secondary heat exchange, does not come into contact with acidic liquids, and has a lifespan of over twenty years.
⑤ Unique real-time crystalline salt separation technology, capable of separating while evaporating.
5、Typical Application Cases
1）Case1
A sodium saccharin producer, generates daily200 tons of copper-containing waste acid water, with the water quality as follows:
Serial Number | Index | Concentration |
1 | Free Acid (as)NaOH (as NaOH) mg/L | 165000 |
2 | Salt content （mg/L） | 80000 |
3 | Copper ions （mg/L） | 8000 |
4 | CODcr （mg/L） | 25000 |
Waste acid treatment process adopted:
After recycling, the quality of the recycled acid is as follows:
Serial Number | Index | Concentration |
1 | Free Acid Content (as)NaOH (as NaOH) mg/L | 150000 |
2 | Salt content （mg/L） | 100 |
3 | Copper ions （mg/L） | 2 |
4 | CODcr （mg/L） | 5000 |
Case Images
