33results about How to "Reduce evaporation costs" patented technology

The invention discloses a mother liquor treatment process and system applied to clopyralid material separation and concentration. The mother liquor treatment system comprises a primary sedimentation tank, a raw water tank, a reaction kettle, a sedimentation tank, a sand filter tank, an ultrafiltration system and a Super RO (reverse osmosis) membrane module which are connected sequentially as well as an evaporator connected with the Super RO membrane module, wherein raw clopyralid mother liquor enters the primary sedimentation tank, both the raw water tank and the reaction kettle are provided with chemical feeders, and the raw water tank and the reaction kettle are communicated through a lift pump; a sludge valve is arranged at the bottom of the sedimentation tank, the sand filter tank is provided with a backwash pipe, a backwash water outlet end of the backwash pipe is communicated with the reaction kettle, and the ultrafiltration system is communicated with the reaction kettle. According to the mother liquor treatment system, design is improved according to the characteristics of the clopyralid material, softening is performed firstly for hardness removal, then ultrafiltration and special RO membrane filtration are performed, and small amount of concentrated water is subjected to evaporative crystallization finally; the evaporation cost is reduced, the influence of a thermal oxidation action on the material is avoided in the whole process, the mother liquor recovery quality is guaranteed, the energy consumption can be reduced obviously, and accordingly, the operation cost is reduced greatly.

The invention relates to high-concentration sewage accelerated-evaporation equipment which comprises a support frame and a water distributing device, wherein the water distributing device comprises a housing, a dual-output-shaft motor is arranged in the housing along a longitudinal axial line of the housing, a fan is arranged on a first output shaft of the dual-output-shaft motor, and a crushing impeller is arranged on a second output shaft of the dual-output-shaft motor. According to the high-concentration sewage accelerated-evaporation equipment provided by the invention, over-saturated high-concentration sewage is crushed into super fine particles by virtue of the high-speed rotating crushing impeller, and the super fine particles are sent into air by virtue of the fan for evaporating. By adopting a crushing and atomizing manner in the invention, a mechanical crushing and atomizing manner is used for replacing a high-pressure pump nozzle spray-atomizing manner, so that the evaporation cost is lowered, and the defects such as sewage blockage, scaling formation and corrosion of a nozzle are prevented.

The invention discloses the industrial application of the technique of leaching black ash three times with sodium sulfide solution in the barium sulfate production industry. Specifically, it is a method for increasing the concentration of sodium sulfide solution by leaching black ash three times. The black ash is leached three times, that is, the solution that has been leached for the first time is precipitated and separated to obtain the mother liquor I, and the mother liquor I is used to continue to leaching the black ash for the second time, and the leached solution is subjected to the second precipitation and separation to obtain the mother liquor II. Carry out three leaching with mother liquor II again, after the solution after three leachings is precipitated and separated, mother liquor III is obtained, and mother liquor III is reacted with sodium sulfate solution to form barium sulfate and sodium sulfide solution, and the concentration of sodium sulfide solution after three leaching can be Reaching 8~10%, the solid-liquid separation sodium sulfide solution is precipitated, clarified and then enters the next process to evaporate. The invention has a reasonable design, increases the concentration of the sodium sulfide solution by leaching the black ash three times, reduces the evaporation amount, and achieves the purpose of reducing the evaporation cost of producing 60 alkali.