A system and method for reclaiming nutrients from dairy manure includes a centrifuge for separating a liquid fraction of the manure from a solid fraction comprising organic material; a mechanical vapor recompression evaporator (MVR) to receive the liquid fraction from the centrifuge and evaporating the liquid fraction by mechanical vapor recompression to produce ammonia-laden water vapor and a concentrated nutrient slurry; a dryer for drying the nutrient slurry to a selected moisture content to be available as an ingredient in compounded fertilizer; and an ammonia stripping tower assembly to receive ammonia-laden water vapor from the MVR and from it to precipitate ammonium sulphate salt and condense water as separate products.

A mobile mechanical vapor recompression evaporator system including a horizontal vapor separator and a horizontal forced circulation heat exchanger. The horizontal vapor separator can include a generally cylindrical housing configured in a generally horizontal orientation. The housing can include at least one product chamber having at least one product passage configured to receive at least one product. The housing further includes at least one vapor chamber having at least one vapor passage and at least one vapor window located between the at least one product chamber and the at least one vapor chamber, wherein a portion of the at least one product evaporates in the product chamber to produce a vapor that passes through the at least one vapor window into the at least one vapor chamber, and is discharged through the at least one vapor passage.

A mechanical vapor recompression (MVR) arrangement includes a compound turbine system, a pressure-tight enclosure provided with a first end and a second end, having an essentially circular cylindrical elongated shape along a longitudinal axis A, and a central tube with an essentially circular cross-section and running within the enclosure to allow steam to flow from the second end to the first end. The MVR arrangement includes an inner central tube arranged concentrically within the central tube and running from the second end to, or towards, the first end, where the inner central tube has an outer diameter related to the inner diameter of the central tube such that a steam flow conducting space is provided between an outer surface of the inner central tube and an inner surface of the central tube. The compound turbine system includes a turbine assembly with a turbine having axial turbine vane members.

A low-temperature distillation facility for distilling a mixed fluid into a pure fluid. An aggregation device has an inlet connected to the vapour space of a supercooling chamber, wherein captured mixed fluid from an evaporator enters the supercooling chamber. The aggregation device's outlet is connected to the vapour space of a superheating chamber, wherein captured pure fluid from a condenser can be sprayed into the superheating chamber. An energy source cools the temperature in the supercooling chamber and heats the temperature in the superheating chamber. A heat exchanger is arranged between the exits of the supercooling chamber and of the superheating chamber. During the process, vapour flows from the supercooling chamber via the aggregation device to the superheating chamber.

A unique adaptive method of Mechanical Vapor Re-compression (MVR) to dehydrate abrasive sludge to a dry, sterile state that is nearly moisture free while maintaining extremely high process efficiencies by adaptively tuning the system parameters related to the varying specific plus latent heats of the input feedstream. This Adaptive MVR (AMVR) process is supported by the effective use of a unique method and apparatus for the optimization of the conductive heating process as applied to a range of sludge consistencies.

Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.

The present invention relates to the waste water treatment field, and discloses apparatus and method for treating waste water containing ammonium salts, which contains NH.sub.4.sup.+, SO.sub.4.sup.2, Cl.sup., and Na.sup.+. In the method of the present invention, the pH value of the waste water to be treated is adjusted to a specific range in advance; sodium sulfate crystal and relatively concentrated ammonia are obtained by first evaporation, and then sodium chloride crystal and relatively dilute ammonia is obtained by second evaporation; alternatively, sodium chloride crystal and relatively concentrated ammonia is obtained by third evaporation, and then sodium sulfate crystal and relatively dilute ammonia are obtained by fourth evaporation. The method of the present invention can recover ammonia, sodium sulfate, and sodium chloride from the waste water respectively, so that the resources in the waste water can be reused as far as possible.

Provided is a renewable high efficient desulfurization process using a suspension bed, comprising mixing the desulfurization slurry with a hydrogen sulfide containing gas to obtain a first mixture, and passing the first mixture into a suspension bed reactor from bottom to top, with controlling the first mixture to have a dwell time of 5-60 minutes in the suspension bed reactor to allow they contact and react sufficiently with each other; and subjecting a second mixture obtained from the reaction to gas liquid separation to produce a rich solution and a purified gas, feeding the purified gas into a fixed bed reactor for carrying out a second desulfurization to obtain a second purified gas, subjecting the resulting rich solution to flash evaporation and then reacting with an oxygen-containing gas for carrying out regeneration. The process may reduce the sulfur content in the hydrogen sulfide containing gas from 2.4-140 g/Nm.sup.3 to 50 ppm or less by using a suspension bed, and further reduce the sulfur content to less than 10 ppm in conjunction with a fixed bed. The invention achieves high efficient desulfurization by combining the suspension bed with the fixed bed connected in series. The present invention has high regeneration efficiency, and the barren solution may be recycled for being used as the desulfurization slurry, without generating secondary pollution, which is very suitable for industrial promotion.

The system may include a vapor separator, a falling film evaporator, and a mechanical vapor recompression device. The system may also include a spin vane positioned at the inlet to the vapor separator. The falling film evaporator may surround an outer wall of the vapor separator, defining a common vessel.

The present invention provides a configuration of a multi-stage flash desalination system including a thermal vapor compressor and a condensate flash tank, which allows to extract a vapor from the condensate before it is returned to the power plant and to compress this vapor and use it as part of the heating steam in the brine heater, which reduces the required amount of steam supply from the power plant, while the condensate returned to the power plant at a reduced temperature allows to utilize low grade heat of exhaust gases of a steam generator to re-heat the condensate, which results in a reduced energy consumption allocated to the multi-stage flash desalination plant and an improvement of the energy efficiency of the power plant.