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

The invention discloses a multi-effect evaporation and concentration device and a technology thereof for solution containing sulfuric acid and salts thereof, and specifically provides a apparatus and a method for the processes of horizontal flow acid inlet, focusing preheating, cocurrent flow acid discharge and final effect crystallization (optional), which are designed for acid bath, two-bath and acidic water. The apparatus and method are used for evaporation concentration of acid bath, two-bath and acidic water or evaporation crystallization of sodium sulfate. The method controls the horizontal flow acid inlet amount of the previous effect evaporators, and is combined with the utilization of condensate water waste for focusing preheating, so as to reach the purposes of reducing temperature rise heat of the previous effect acid inlets, increase the vaporization heat, and dramatically reduces evaporation vapor and water ratio. The invention has the advantages of significantly reducing energy consumption and costs of evaporation, resolving discharge of solution containing sulfuric acid and salts thereof, directly evaporating and crystallizing anhydrous sodium sulphate, and solving emission of sodium sulfate. The invention improves the economic efficiency of enterprises, and far exceeds the most advanced level in the industry.

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 relates to an atomizing evaporating system for low-temperature heating of an air source heat pump and an air conditioner, comprising a compressor, a heat exchanger, a liquid storage tank, an expansion valve, an atomizing evaporator and an evaporator. The heat energy dissipated normally by the exhaust pip of the compressor is utilized, the liquid drops are atomized and evaporated by the sandwich layer of the evaporator, no electric heating and other auxiliary energy is used, and the evaporation cost is reduced. In addition, the one-time atomizing evaporating is adopted on the basis of the one-time evaporating by the evaporator of the existing system, so that two-time evaporating is realized. Due to the adoption of the two-time evaporating, the low-temperature gas-liquid refrigerant medium is fully evaporated, the evaporating efficiency is improved, and sufficient refrigerant gas is supplied to the compressor of an air conditioner for low-temperature heating, so that the compressor can heat normally and stably at the low temperature of lower than 5 DEG C below zero, and the efficiency of heating by the heat pump of the air conditioner at the low temperature of lower than 5 DEG C below zero is guaranteed.

The invention discloses a recycling process and system for cyclic utilization of high-salt and high-concentration non-biodegradable organic matter-containing H acid wastewater and production of anhydrous sodium sulfate; the process for production of anhydrous sodium sulfate through solvent-out crystallization, waste acid cyclic utilization and high-temperature boiling granulation and oxidation is designed for the high-salt high-organic-matter H acid wastewater, so all components of the H acid wastewater are recycled with low cost, the production costs of H acid is reduced, zero emission of pollutants is achieved, and the method is the best way for H acid wastewater low-cost recycling, has demonstration significance for treatment of high-salt and high-concentration non-biodegradable organic matter wastewater, and has huge economic and social benefits.

The invention discloses a method for treating a waste gas and wastewater in the trichloroisocyanuric acid production process. The method comprises the following steps of carrying out dechlorination reaction by using hydrochloric acid to generate cyanuric acid and chlorine, wherein cyanuric acid is fed back to production; thoroughly absorbing chlorine gas by using a calcium cyanurate solution, and absorbing residual carbon dioxide gas with an alkali solution to generate baking soda; and adding lime slurry in the excessive hydrochloric acid solution in the reaction to generate calcium chloride which is mixed with calcium chloride in the original wastewater so as to produce anhydrous calcium chloride. The method has the advantages that treatment on the waste gas and the wastewater of trichloroisocyanuric acid is achieved, not only is the environment pollution caused by the waste gas and the wastewater prevented, but also production benefits are made, the treatment process is simple, the reaction is easy to control and achieve, no secondary pollution is caused, the problem of discharging the wastewater and the waste gas in the process of producing trichloroisocyanuric acid from a cyanuric acid calcium solution which is prepared by introducing chlorine into cyanuric acid, calcium carbonate and water is solved, and an environmental-friendly production process of the trichloroisocyanuric acid without wastewater or waste gas is achieved.

The invention discloses a low-cost iron phosphate wastewater treatment method containing ammonia nitrogen. This includes the steps of: adding an appropriate amount of Ca(OH) to the ferric phosphate mother liquor 2 , adjust the pH value to 6-8, generate calcium sulfate precipitate, filter the precipitate to obtain the first mixed solution, the first mixed solution mainly contains NH 4 + , SO 4 2‑ and PO 4 3‑ Concentrating the first mixed solution with the first membrane to obtain the second mixed solution; performing MVR evaporation on the second mixed solution to separate and obtain ammonium sulfate crystals and ammonium phosphate crystals; washing and drying the crystals to obtain ammonium sulfate and ammonium phosphate finished products. The low-cost ferric phosphate ammonia nitrogen-containing wastewater treatment method provided by the invention has a simple process and the raw material used is Ca(OH) 2 , can reduce the salt concentration in the system, thereby reducing the amount of water entering the MVR for evaporation, and correspondingly reducing the evaporation cost. At the same time, Ca(OH) 2 As a solid, it will not increase the water volume of the system, thereby reducing the treatment capacity and treatment cost of the first membrane concentration system.

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.