23 results about "Multiple-effect evaporator" patented technology

The invention relates to the technical field of industrial equipment automatic control, in particular to a cooperative operation control method and system for a multi-effect evaporator. The method comprises the following steps: training a GRU-based reference feedforward model by using multi-source time sequence data in a clean state of equipment; secondly, an observation total heat exchange coefficient and a theoretical total heat exchange coefficient are obtained in real time, and a cleanliness evaluation factor is calculated through a filter to represent the scaling degree; secondly, performing nonlinear gain correction on the reference feed-forward signal based on the factor to obtain a self-adaptive feed-forward signal for compensating the scaling influence; and finally, generating a dynamic cooperative weight according to the volatility of the current working condition, and carrying out weighted fusion on the self-adaptive feedforward signal and the feedback control signal. According to the method, the problem that the static model is mismatched along with equipment scaling is solved, and stable and efficient control of the whole period is guaranteed.

The invention relates to a chemical waste resource utilization technology, in particular to a system for preparing calcium chloride from calcium carbide method PVC byproduct hydrochloric acid and carbide slag. The device comprises a hydrochloric acid conveying pipeline, a filter, a reaction kettle, a carbide slag bin, a plate-and-frame filter press, an intermediate tank, a steam conveying pipeline, a multi-effect evaporator, a fluidized drying bed, an air heater, a high-salinity wastewater collecting tank, an induced draft fan, a hydrochloric acid conveying pump, a slurry pump, an intermediate pump and a vacuum pump. By integrating the hydrochloric acid purification unit, the neutralization reaction unit, the solid-liquid separation unit and the evaporation drying unit, the byproduct hydrochloric acid and the carbide slag are converted into a high-purity calcium chloride product, so that the problems of low efficiency and secondary pollution caused by isolated waste treatment in a traditional treatment mode are effectively solved; the method has the advantages of realizing resource utilization of byproduct hydrochloric acid and carbide slag, reducing environmental pollution, reducing waste treatment cost, avoiding secondary pollution and the like.

The application provides a waste heat utilization system based on alumina production, which comprises a heat pump unit, a preheating desalted water tank and a heating desalted water tank; the input end of the heat pump unit is used for connecting the end of a multi-effect evaporator in alumina production, so as to recover the waste heat of exhaust steam generated in the last effect in the process of producing alumina by the multi-effect evaporator; the first output end of the heat pump unit is connected with the heating desalted water tank, the preheating desalted water tank is connected with the heating desalted water tank through a pipeline, and the preheating desalted water tank is used for providing desalted water; the heat pump unit is used for transmitting the waste heat of exhaust steam to the heating desalted water tank, and heating the desalted water of the heating desalted water tank by using the waste heat of exhaust steam. The system of the application utilizes the characteristic that the desalted water needs to be heated when being added into a desalted water receiver, for example, an oxygen removal tank, and uses the waste heat of exhaust steam at the end of the multi-effect evaporator in alumina production to heat the desalted water of the heating desalted water tank, so that the resources are effectively utilized and the economic benefits are improved.

The present application relates to a kind of acidic copper-containing waste liquid, aluminium mud collaborative recovery processing system and processing process, processing system includes acidic copper-containing waste liquid collection tank, acidic copper-containing waste liquid collection tank is sequentially connected first filter, preheater, preheater is connected condenser and multiple-effect evaporator respectively, multiple-effect evaporator is sequentially connected transfer tank, scrubber, second filter, and second filter is connected sodium chloride solution storage tank and copper sulfate preparation unit respectively;Processing system further includes the aluminium mud bin connected with acidification reaction kettle, and acidification reaction kettle is connected first filter press and condenser respectively, and first filter press is connected evaporation concentration chamber, and evaporation concentration chamber is connected crystalline aluminium chloride preparation unit and liquid polyaluminium chloride preparation unit respectively.The present application processing system and processing process are generated in the production process of printed circuit board acidic copper-containing waste liquid, aluminium mud generated in surface treatment industry are collaboratively treated, improve recovery processing efficiency, realize resource utilization, with economic benefit.

The utility model relates to a tin stripping waste liquid recovery processing device which comprises a sedimentation tank, the sedimentation tank is connected with a new tin stripping liquid regeneration kettle through an oxidation tank, a centrifugal machine, a buffer tank, a multi-effect evaporator and a condenser in sequence, the centrifugal machine is further connected with a filter through a pyrolysis tank and washing equipment in sequence, and the filter is respectively connected with a dryer and a first post-processing tank. And the first post-treatment tank is also respectively connected with a second post-treatment tank and the multi-effect evaporator, and the second post-treatment tank is connected with an inlet of the new tin stripping liquid regeneration kettle. According to the recovery treatment device for the tin stripping waste liquid, the tin stripping waste liquid is recycled, dissolved tin elements, iron elements and copper elements are all recovered, maximum utilization of resources is achieved, no other waste is generated in the recovery process, and secondary pollution is eliminated.

The invention relates to an energy-saving and environment-friendly intermittent pulping and cooking process which comprises the following steps: performing stepped heating type cooking on wood chips and cooking liquor to prepare slurry; after cooking is finished, reverse heat exchange is conducted on the dilute black liquor and the pulp, and hot black liquor is replaced; then, dilute black liquor is introduced again, and warm black liquor is replaced; the warm black liquor can be used as a material for preparing the cooking liquor; the hot black liquor is subjected to flash evaporation to remove 10-15% of moisture, the concentration of the hot black liquor is increased to 18-21 Be degrees, and the flash-evaporated hot black liquor firstly enters a quadruple-effect down-flow multi-effect evaporator to be concentrated to 28-30 Be degrees and then enters a sextuple-effect falling film evaporator to be concentrated to 65% or above; wherein secondary steam generated by flash evaporation is used as a first-effect heat source of the quadruple-effect down-flow multi-effect evaporator after liquid drops are removed through the steam-water separator. According to the method, flash secondary steam is combined to drive the first effect of the multi-effect evaporator, hot black liquor pretreatment concentration optimization alkali recovery and the like, so that energy gradient utilization is sufficient, comprehensive energy consumption is greatly reduced, and the win-win situation of environmental protection and resource recycling is achieved.

The utility model discloses a multi-effect evaporation wastewater treatment device, and relates to the technical field of wastewater treatment. The device comprises a filter box, a purification box and a gas-liquid separator, a heat exchange and heat preservation assembly is clamped and fixed to the peripheral surface of the filter box, the purification box is arranged on one side of the filter box, a heating furnace is clamped and fixed to the peripheral surface of the purification box, a high-pressure pump penetrates through the top of the peripheral surface of the heating furnace in a clamped mode, and a ventilation pipe penetrates through the top of the high-pressure pump in a clamped mode; a plurality of gas spraying pipes penetrate through and are clamped to the other end of the ventilation pipe; and a gas-liquid separator is arranged on one side of the purification box. By arranging the filter box, the purification box and the gas-liquid separator, the problems that a multi-effect evaporator improves the evaporation efficiency of waste water by heating the waste water, the needed heating time is long and the treatment efficiency is low when a large amount of waste water is heated, and a plurality of pipelines need to be used for transporting high-temperature air when the waste water is heated for multiple times, so that the waste water is wasted are solved. And part of heat is lost in the transportation process.

The invention relates to a marine nuclear waste heat driven compact water and oxygen making system and a control method, and the system comprises a water making unit which comprises a multi-effect evaporator connected to a nuclear energy secondary loop system, the multi-effect evaporator heats seawater to generate steam and condenses the steam into fresh water, and the multi-effect evaporator is connected with a purification device for purifying the fresh water; the oxygen generation unit comprises a solid oxygen candle oxygen generation module and an electrolyzed water oxygen generation module, the solid oxygen candle oxygen generation module takes sodium chlorate as an oxygen source and generates oxygen through a thermal decomposition reaction, and pure water purified by the electrolyzed water oxygen generation module generates oxygen through electrolyzed water; and the control unit dynamically controls the pure water produced by the water production unit to the oxygen production unit according to the ship operation working condition, the oxygen demand and the electrical load, and controls the start and stop and the oxygen production of the solid oxygen candle oxygen production module and the electrolyzed water oxygen production module. The oxygen generation mode can be switched according to the operation state of the nuclear energy ship, the solid oxygen candle oxygen generation module is preferentially used for generating oxygen when power is insufficient, and when power is sufficient, the solid oxygen candle oxygen generation module and the solid oxygen candle oxygen generation module are used simultaneously to better meet different navigation requirements.

The invention provides a corn soaking water evaporation system based on corn starch production, and relates to the technical field of corn starch production equipment. The corn soaking water evaporation system based on corn starch production comprises a bottom frame, a bearing plate is fixed to the upper portion of the bottom frame, a storage tank is installed on one side of the bearing plate, a preheating recycling structure is arranged in the storage tank, a cooling tank is installed on the other side of the bearing plate, and a cooling structure is arranged in the cooling tank. And a multi-effect evaporator is arranged in the middle of the bearing plate. According to the corn soaking water evaporation system based on corn starch production, corn soaking water feed liquid can be conveyed into the multi-effect evaporator through the preheating recovery structure, heating evaporation processing can be conducted on the corn soaking water feed liquid, dirt in the feed liquid can be removed in the process, redundant steam can be cooled through the cooling structure, and the cooling effect is good. The evaporation effect on the feed liquid is improved.

The utility model discloses a vertical multi-effect evaporator which comprises a supporting frame, an evaporator body is fixedly arranged in the supporting frame, a plurality of sets of supporting rods are arranged in a cavity of the evaporator body, heating pipes are arranged among the multiple sets of supporting rods in a surrounding mode, electrodes are arranged on the heating pipes, and a flow dividing cover plate assembly is arranged at the top of the evaporator body. The diversion cover plate assembly comprises a hollow diversion cover plate body, a liquid pipeline and a steam pipeline are arranged at the top of the diversion cover plate body, the liquid pipeline is communicated with a cavity of the diversion cover plate body, and one end of the steam pipeline penetrates through the diversion cover plate body to be arranged at the bottom of the diversion cover plate body. A plurality of groups of shunting pipes communicated with the cavity are uniformly distributed at the bottom of the shunting cover plate main body; the heating and shunting design is ingenious, the heating pipes surround the supporting rods and are heated through the electrodes, the heat transfer efficiency is efficiently improved, the unique shunting cover plate assembly at the top achieves accurate shunting of liquid refrigerants and exporting of steam, and the evaporation efficiency and effect are remarkably improved.

The application discloses a kind of high-efficiency energy-saving multi-effect evaporator system and its use method, belong to multi-effect evaporator technical field.A kind of high-efficiency energy-saving multi-effect evaporator system, including outer cover, further include: first evaporation chamber, second evaporation chamber, third evaporation chamber, all are set in outer cover;Pipe bundle is respectively arranged in first evaporation chamber, second evaporation chamber, third evaporation chamber;Heating gas pipe is connected at the top of first evaporation chamber;Feeding pipe is connected at the top of first evaporation chamber, one end of the feeding pipe is placed in first evaporation chamber and is communicated with pipe bundle;Fixed rod is fixedly connected in the pipe bundle, auger blade is spirally arranged on the fixed rod, turbine blade is rotatably connected to the bottom of the fixed rod, and cleaning rod is arranged on the turbine blade;The application can heat the material more comprehensively, and the heating effect is better, and the crystallization attached to the inner wall of pipe bundle can be cleaned regularly.

The present application relates to the technical field of evaporator, particularly relates to a tower type multi-effect evaporator, which comprises a one-effect evaporator, a two-effect evaporator, a three-effect evaporator, a four-effect evaporator, a raw material preheater and a waste steam condenser built by the same standard module; the heat source input end of the one-effect evaporator is used for connecting with external low-grade steam, the waste steam output end of the one-effect evaporator is connected with the waste steam input end of the two-effect evaporator; the waste steam output end of the two-effect evaporator is connected with the waste steam input end of the three-effect evaporator; the waste steam output end of the three-effect evaporator is connected with the waste steam input end of the four-effect evaporator; the waste steam output end of the four-effect evaporator is connected with the waste steam input end of the raw material preheater, the raw material preheater is used for connecting with raw material to be evaporated, and the raw material is preheated by the waste steam discharged from the four-effect evaporator; the raw material output end of the raw material preheater is connected with the raw material input end of the one-effect evaporator, and the preheated raw material is transported to the one-effect evaporator for evaporation treatment.

This invention discloses a model-based control method for liquid level control in alumina multi-effect evaporators. A universal evaporator liquid level MPC control module can be combined for different evaporation processes to stably and accurately control the liquid level in the multi-effect evaporator. Liquid level control is achieved by setting a liquid level setpoint and corresponding outlet pump frequency or outlet valve opening range. The MPC system intelligently analyzes changes in multiple parameter data to output control data, which is then seamlessly integrated with existing DCS control systems for automatic control. This method considers the interference of changes in evaporation water volume and the flow rate of the evaporating raw material during steam regulation on liquid level control. This invention features a high degree of integration with DCS systems and a high degree of automation, achieving stable and accurate MPC model predictive control of multi-effect evaporator liquid level. This reduces personnel workload and production instability, providing a solid foundation for pursuing automated and intelligent technologies that improve caustic alkali concentration and steam consumption reduction.

The invention relates to a desalting evaporation method for allopurinol, which belongs to the technical field of chemical separation engineering and functional material preparation, and comprises the following steps: mixing fluorine-containing polyaryletherketone or polyimide rigid framework resin, high-temperature-resistant zwitterionic functional modified anti-scaling filler and aprotic polar organic solvent, carrying out ultrasonic dispersion, standing for defoaming, and drying to obtain the allopurinol. A functional coating liquid is obtained; the functional coating liquid is coated on the inner wall of a heat exchange tube of an MVR (mechanical vapor recompression) evaporator or a multi-effect evaporator, and a compact functional coating is constructed on the inner wall of the heat exchange tube by introducing high-temperature-resistant zwitterionic functional modified anti-scaling filler into fluorine-containing polyaryletherketone or polyimide rigid framework resin; the obvious difference is derived from the zwitterionic polymer brush on the surface of the filler, the zwitterionic polymer brush has extremely high hydration capacity in water, and a layer of super-hydrophilic water barrier effect can be formed on the surface of a coating.

The utility model belongs to the technical field of evaporation and concentration equipment, and particularly relates to a falling film type multi-effect evaporator which comprises multiple stages of evaporator units connected in series, and each stage of evaporator unit comprises a feeding chamber, a heating chamber, a separator and a communicating pipe. The liquid distributor is mounted at the bottom end of the feeding chamber, and the rotational flow inlet is formed in the outer side of the rotational flow cylinder in a surrounding manner, so that feed liquid can be guided to continuously rotate in the rotational flow cylinder, feed liquid distribution is optimized, uniformity of feed liquid inlet quantity of each heat exchange tube in the heat exchange tube bundle is improved, and the feed liquid can form a film more effectively after entering each heat exchange tube; the evaporation efficiency and effect are optimal, local overheating is avoided, and the stability, high efficiency and reliability of the operation process are guaranteed; and through the flow of down-flow feeding at the top, the flowing of the feed liquid can be completed by utilizing the pressure difference among all the effects, meanwhile, the uniform distribution of the feed liquid is completed by utilizing gravity, and forced circulation equipment does not need to be additionally arranged, so that the energy consumption is reduced, and the operation cost is reduced.

The utility model relates to the technical field of evaporators, in particular to a multi-effect evaporator capable of reducing energy consumption, which comprises a shell and a lower cover. The shell is of a circular tubular structure; the steam cylinder is concentrically arranged on the inner side of the shell; the steam input pipe penetrates through the shell and is in through connection with the upper part of the steam cylinder; the flow guide plate is fixedly arranged at the upper end of the steam cylinder, and the flow guide plate and the steam cylinder are concentrically arranged; the liquid outlet pipe is arranged above the flow guide plate, and the liquid outlet pipe and the flow guide plate are concentrically arranged; the splitter plate is fixedly arranged at the bottom of the liquid outlet pipe; the liquid outlet holes are formed in the lower portion of the liquid outlet pipe in a circumferential array mode and distributed in the two sides of the splitter plate. The liquid inlet pipe penetrates through the upper cover and is connected with the liquid outlet pipe through the liquid distribution pipe; by improving the multi-effect evaporator capable of reducing energy consumption, the multi-effect evaporator has the advantages of small heat loss of steam and high evaporation efficiency of liquid, so that the problems and defects in the prior art and equipment are effectively solved.

The utility model relates to the technical field of evaporators, in particular to a multi-effect mechanical vapor recompression (MVR) evaporator anti-blocking tube bundle structure of an integrated Roots compressor, which comprises a pipeline body, a fixing seat and a fixing screw, a mounting part is arranged on a bent tube part of the pipeline body, a stretching-in groove is arranged on the mounting part, a stretching-in part is arranged on the fixing seat, and the fixing screw is arranged in the stretching-in groove. The fixing base is installed on the installation part through a fixing screw so that the stretching-in part can stretch into the inner side of the bent pipe part through the stretching-in groove, and the first side face of the stretching-in part inclines towards the coming direction of fluid in the pipeline body. According to the anti-blocking tube bundle structure of the evaporator, the first side face of the stretching-in part of the fixing base is located on the inner side of the bent tube part and serves as a flow guide face for fluid on the inner side of the bent tube part, then the fluid on the inner side of the bent tube part flows towards the middle of the bent tube part along the first side face of the stretching-in part, and therefore the flow speed of fluid feed liquid passing through the bent tube part is increased; the problems that crystal deposition is prone to being generated on the inner side of the bent pipe part, and a pipeline body is blocked are solved.

The application relates to the technical field of evaporation, in particular to a multi-effect evaporator group based on thermal parameter collaborative optimization and a control method thereof. The method collects thermal parameters of each effect of the multi-effect evaporator group, establishes thermal parameter sequences of each effect in each control period, calculates a coupling risk index and a control response sensitivity of the control period, adaptively adjusts a forgetting factor according to the control response sensitivity, uses an adaptive model predictive control algorithm, and realizes the control of the multi-effect evaporator group according to all thermal parameter sequences of all effects of the multi-effect evaporator group in the same control period. The application can improve the stability of the control of the multi-effect evaporator group.

The utility model relates to an acidic copper-containing waste liquid and aluminum mud collaborative recovery processing system which comprises an acidic copper-containing waste liquid collecting tank, the acidic copper-containing waste liquid collecting tank is sequentially connected with a first filter and a preheater, one outlet of the preheater is connected with a condenser, and the other outlet of the preheater is sequentially connected with a multi-effect evaporator, a transfer tank, a washer and a second filter. The second filter is respectively connected with a sodium chloride solution storage tank and a copper sulfate preparation unit. According to the recovery treatment system, the acidic copper-containing waste liquid generated in the production process of the printed circuit board and the aluminum mud generated in the surface treatment industry are cooperatively treated, so that the recovery treatment efficiency is favorably improved, resource utilization is realized, and economic benefits are achieved.

The utility model relates to evaporation equipment technical field discloses a kind of multiple-effect evaporation device, including multiple evaporators connected in series in turn, the steam outlet of previous evaporator is connected with the steam inlet of following evaporator, first group multiple-effect evaporator is for several in front of multiple evaporators, second group multiple-effect evaporator is for several behind;The outlet of feed pipeline is connected with the material inlet of the evaporator of the first evaporator of second group multiple-effect evaporator most front part, the material outlet of previous evaporator in second group multiple-effect evaporator is connected with the material inlet of following evaporator, the material outlet of last evaporator in second group multiple-effect evaporator is connected with the material inlet of last evaporator of first group multiple-effect evaporator, the material outlet of following evaporator in first group multiple-effect evaporator is connected with the material inlet of previous evaporator.A kind of maltose preparation equipment, including the multiple-effect evaporation device of any preceding. The present application has the advantages of high thermal efficiency, high evaporation efficiency and improving product quality.

The application discloses a low-temperature multi-effect seawater desalination system, wherein a booster pump and a heater are arranged in the low-temperature multi-effect seawater desalination system; suction steam is sequentially subjected to pressure boosting of the booster pump and heating of the heater; the temperature and the pressure are increased to form new suction steam; the new suction steam is mixed with power steam in a steam ejector group to form heated steam; the power steam is prevented from being directly mixed with the suction steam; the power steam flow is reduced; and the energy consumption is reduced. The application uses cooling seawater for cooling the last-effect secondary steam as feed seawater in a multi-effect evaporator group, reduces the loss of available energy, and improves the production efficiency. The application arranges a common module and a standby module in the steam ejector group, thereby ensuring the stability of system operation. The low-temperature seawater desalination system is simple in structure, small in scale and stable in operation, and is suitable for areas with small areas or small populations.

The application relates to the field of power system control, and provides an intelligent coordination control method and system for a multi-source heat pump coupling dehumidification system of a power distribution station house, which comprises the following steps: performing multi-source heat pump characteristic analysis through a heat source quality evaluation model to obtain heat source characteristic parameters; dynamically reconstructing a heat exchange network topology according to the heat source characteristic parameters to obtain optimized heat exchange network configuration parameters; performing gradient dehumidification working medium circulation on the optimized heat exchange network configuration parameters through a multi-effect evaporator to obtain dehumidification working medium circulation parameters; performing neuromorphic control on the dehumidification working medium circulation parameters through a bionic pulse neural network to obtain humidity control instructions; performing dynamic load distribution on the multi-source heat pump system according to the humidity control instructions to obtain an energy efficiency coordination optimization strategy, and coordinating and controlling the multi-source heat pump through the energy efficiency coordination optimization strategy. The application improves the evaluation accuracy of heat source performance parameters of the multi-source heat pump and reduces the overall energy consumption level of the system.