13results about How to "Improve thermodynamic efficiency" patented technology

The utility model belongs to the technical field of refining devices for chemical raw materials, and particularly relates to a 1-butene refining device with coupled dividing wall column and heat pump rectification. The 1-butene refining process device with coupled dividing wall column and heat pump rectification comprises a dividing wall column, a 1 # condenser and a compressor, a partition plate is arranged in the dividing wall column and divides the internal space of the dividing wall column into four parts, namely a public rectifying section, a feeding section, a discharging section and a public stripping section, a liquid collecting tray is arranged at the public rectifying section, and a liquid outlet is formed in the liquid collecting tray. A liquid outlet of the liquid collecting tray is connected with one end of a distribution pipeline outside the dividing wall column, the other end of the distribution pipeline is connected with the feeding section and the discharging section, and a regulating valve is arranged on the distribution pipeline; a tower bottom discharge port of the dividing wall tower is connected with the 1 # heat exchanger, the 1 # heat exchanger is connected with the throttle valve, and the throttle valve is connected with the 1 # condenser. The 1-butene refining device with coupled dividing wall column and heat pump rectification, provided by the utility model, is compact in structure and low in investment.

The invention discloses a system and method for separating 1-hexene in an ethylene trimerization product, and the system comprises a light component removal tower which is provided with a tower top outlet and a tower kettle outlet; the dividing wall tower is connected with the tower kettle outlet of the light component removal tower, the tower top of the dividing wall tower is provided with a light component outlet, the tower kettle is provided with a heavy component outlet, and the side line is provided with a solvent outlet; the purification tower is connected with the light component outlet of the dividing wall tower, a butene outlet is formed in the tower top of the purification tower, and a product outlet is formed in the tower kettle of the purification tower; wherein a heat exchange device is also arranged between the solvent outlet and the heavy component outlet of the dividing wall column, so that a solvent component flowing out of the solvent outlet exchanges heat with a heavy component flowing out of the heavy component outlet, the heavy component after heat exchange returns to the bottom of the dividing wall column, and part of the solvent component after heat exchange returns to the dividing wall column. The system is low in energy consumption.

The invention discloses a vehicle-mounted movable DMR-PHE natural gas liquefaction device, raw material gas is circularly cooled through double refrigerants to obtain liquefied petroleum gas LPG and liquefied natural gas LNG products, heat exchange is carried out during primary refrigerant circulation and cryogen circulation, heat exchange is carried out during secondary refrigerant circulation, and heat exchange is carried out during secondary refrigerant circulation. A vehicle-mounted horizontal two-stream plate-fin heat exchanger is adopted for heat exchange among the primary refrigerant, the cryogen and the raw material gas NG; the vehicle-mounted horizontal type two-flow plate-fin heat exchanger is adopted, miniaturization design can be carried out, the strict vehicle-mounted requirement can be met, and maximization of the handling capacity of the cold box in a vehicle-mounted limited space is achieved. The vehicle-mounted horizontal type cold box adopts the two-flow plate-type heat exchanger, miniaturization design can be carried out on the horizontal type cold box, and the handling capacity of the cold box is improved. The mixed refrigerant liquefying process flow based on the vehicle-mounted horizontal cold box is optimized, double-refrigerant liquefying circulation based on the horizontal cold box is constructed, the vehicle-mounted requirement can be met, and the handling capacity of the cold box is maximized in the vehicle-mounted limited space.

The invention discloses a vehicle-mounted movable SMR-PHE natural gas liquefaction device which is used for obtaining liquefied petroleum gas (LPG) and liquefied natural gas (LNG) products by using refrigerant circulating cooling feed gas, and the refrigerant circulating cooling feed gas is subjected to a refrigerant pressurization stage, a refrigerant temperature and pressure reduction stage and a feed gas cooling stage. The refrigerant passes through the first heat exchanger, the second heat exchanger and the second throttle valve during cooling and depressurization, and the feed gas passes through the third heat exchanger and the fourth heat exchanger during cooling; the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are two-flow plate type heat exchangers. The vehicle-mounted horizontal cold box adopts the two-flow plate type heat exchanger, the horizontal cold box can be miniaturized, the mixed refrigerant liquefying process flow based on the vehicle-mounted horizontal cold box is optimized, the single-stage mixed refrigerant liquefying circulation based on the horizontal cold box is constructed, the vehicle-mounted requirement can be met, and the purpose that in the vehicle-mounted limited space, the single-stage mixed refrigerant liquefying circulation can be achieved is achieved. And the handling capacity of the cold box is maximized.

The invention discloses a method and an algorithm for determining operation parameters of a refrigerating system of a cold therapy cabin. A sensor in the refrigerating system collects parameters, a flow sensor determines the mass composition of fluid by measuring the density of the fluid, and a pressure and temperature sensor is used for determining state parameters of the fluid. Thermodynamic parameters of the refrigerating system of the cold therapy cabin are calculated, wherein the parameters comprise the liquid-phase refrigerant density, the mass components of all gas-liquid separation components, the enthalpy value of a mixing point of each stage of condensation evaporator, the enthalpy value of each stage of condensation evaporator and the enthalpy value of the evaporator; according to thermodynamic parameters of the refrigeration system, system operation parameters are determined, and cycle components, cooling capacity and system COP are predicted; the thermodynamic efficiency of the refrigeration system is improved by determining the operation parameters of the refrigeration system of the cold therapy cabin and predicting the circulation components, the cooling capacity and the COP of the system through the algorithm, and stable and efficient operation of the refrigeration system of the cold therapy cabin is achieved according to the predicted actual operation parameters.

The utility model discloses a device for separating ethanol-normal hexane-cyclohexane multi-element azeotrope by double-side-line extractive distillation, which comprises a first side-line extractive distillation tower, the first side-line extractive distillation tower is connected with a multi-element azeotrope feeding pipeline, a first extractant feeding pipeline and a first reboiler, the first side-line extractive distillation tower is connected with a first condenser and a first reflux tank, and the first reboiler is connected with a second condenser and a second reflux tank. The reflux tank I is connected with a reflux pipeline I and a cyclohexane extraction pipeline; the first side-line extractive distillation tower is connected with a feeding port of the second side-line extractive distillation tower through a first material extraction side line, the second side-line extractive distillation tower is connected with a second extraction agent feeding pipeline and a second reboiler, the second side-line extractive distillation tower is connected with a second condenser and a second reflux tank, and the second reflux tank is connected with a second reflux pipeline and an n-hexane extraction pipeline. According to the utility model, a part of liquid-phase material is extracted from the side-line material at the lower part of the side-line extractive distillation tower I and enters the side-line extractive distillation tower II, so that the thermal load of the reboiler is reduced on the basis of improving the thermodynamic efficiency in the tower, and the aim of saving energy is fulfilled.

The invention provides an airborne multi-element working medium double-temperature refrigerating system. The system comprises a precooler, a cabin heat exchanger, a vapor-liquid separator and an electronic equipment heat exchanger, an outlet of the precooler is connected with an inlet of the cabin heat exchanger, and a liquid multi-element refrigerant is input into the cabin heat exchanger; the cabin heat exchanger preferentially evaporates low-boiling-point components in the liquid multi-element refrigerant to form a gas-liquid two-phase multi-element refrigerant, and the formed gas-liquid two-phase multi-element refrigerant is connected with an inlet of the gas-liquid separator through a second outlet of the cabin heat exchanger; the vapor-liquid separator comprises a first outlet and a second outlet; a first outlet of the vapor-liquid separator is connected with an inlet of the precooler, and a second outlet of the vapor-liquid separator is connected with an inlet of the electronic equipment heat exchanger; the electronic equipment heat exchanger evaporates and gasifies the liquid-phase multi-element refrigerant; and the formed second gas-liquid two-phase multi-element refrigerant is connected with an inlet of the precooler through a second outlet of the electronic equipment heat exchanger.

The invention discloses a rectification system and a rectification method for removing light components from MIBK, and belongs to the technical field of chemical rectification. The rectification system comprises a rectification tower, the rectification tower comprises a tower body with a cylindrical barrel structure, and a vertical partition plate is arranged in the tower body and divides the rectification tower into a first pre-fractionation section, an azeotrope rectification section, a stripping section, a second pre-fractionation section and an acetone rectification section. By adopting the rectification equipment, an organic matter mixed solution containing light components such as 2-MPA and acetone from an MIBK synthesis system can be rectified, extracted and separated. A target product 2-MPA debounded region is obtained in the extraction section; a target product diacetone obtained in an acetone rectifying section of the rectifying tower is directly returned to an MIBK synthesis system as a raw material for use; a target product tri-MIBK solution obtained in the stripping section of the rectifying tower is subjected to boundary region rectification, and MIBK is separated. By utilizing the rectification system, the number of equipment can be reduced, the technological process is simplified, the device investment is reduced, the raw material and energy consumption in production is reduced, the production cost is reduced, and the carbon emission of a production device is reduced.

The present invention relates to a data center cooling system and a cooling method thereof using a loop heat pipe. The system is applicable to the cooling technology field of a data center. The technical solution adopted by the present invention is as follows: the system comprises: a loop heat pipe pipeline, on which a heat pipe working fluid pump capable of circulating the working fluid in the pipeline in a specified direction is provided; an evaporator, arranged on the loop heat pipe pipeline, for absorbing the heat dissipated by the data center, and using the absorbed heat to convert the working fluid in the loop heat pipe pipeline from liquid to gas; a two-stage cooler, arranged on the loop heat pipe pipeline, for absorbing the heat of the gaseous working fluid in the loop heat pipe pipeline, and converting the gaseous working fluid into liquid working fluid; the two-stage cooler has a cooling cylinder, in which an upper filler and a lower filler located below the upper filler are provided, and condensers are provided in both the upper filler and the lower filler, and the condensers are connected to the loop heat pipe pipeline.

The invention relates to a system for recovering waste heat of a hydrogen-oxygen fuel cell to obtain dry air and hot water. Waste gas generated by the hydrogen-oxygen fuel cell passes through the first evaporator and the first condenser and then enters the dryer, and meanwhile, the first evaporator and other assemblies such as the first compressor, the first condenser, the first gas storage tank and the first expansion valve form a circulation loop used for treating the waste gas and obtaining dry gas. In addition, cooling water of the fuel cell passes through the second evaporator, and a circulation loop is formed between the fuel cell and the second evaporator. The second evaporator is connected with the second compressor, the second condenser, the second air storage tank and the second expansion valve to form another loop, water flow is heated through waste heat, and the waste heat is converted into domestic hot water. By the adoption of the structure, waste heat of the hydrogen-oxygen fuel cell is effectively recycled, waste heat emission is reduced, the energy utilization rate can be increased, energy consumption is reduced, and the problem of waste heat loss of the fuel cell is solved.

The utility model discloses a device of recycling DMF in waste water, through primary dehydration tower, secondary dehydration tower and partition wall rectifying column carry out multistage dehydration and rectification, compared with traditional conventional two tower three component separation structure, greatly reduce equipment cost and equipment's floor space, vacuum pump and DMF reation kettle cooperation, the most part dimethylamine in primary dehydration tower, secondary dehydration tower and partition wall rectifying column overhead distillate is sucked to DMF reation kettle with formic acid in partition wall rectifying column column kettle liquid dehydration reaction again obtains DMF, and transports to the partition wall rectifying column and carries out rectification, has reduced byproduct in waste gas and waste liquid, reduced the loss rate of DMF, improved the recovery rate of DMF.

The utility model discloses a device for separating ethanol-n-hexane-cyclohexane multi-element azeotrope, which comprises an extractive distillation partition plate tower, the extractive distillation partition plate tower is divided into a main tower and an auxiliary tower through a partition plate, and the main tower is connected with a multi-element azeotrope feeding pipeline, an extracting agent feeding pipeline and a reboiler I; the top of the main tower is connected with a condenser I and a reflux tank I, and the reflux tank I is connected with a cyclohexane extraction pipeline; the top of the auxiliary tower is connected with a condenser II and a reflux tank II; the reflux tank II is connected with an n-hexane extraction pipeline; the bottom of the extractive distillation partition plate tower is connected with a solvent recovery tower through an ethanol-extractant extraction pipeline, the solvent recovery tower is connected with a reboiler II, the top of the solvent recovery tower is connected with a condenser III and a reflux tank III, the reflux tank III is connected with an ethanol extraction pipeline, and the bottom of the solvent recovery tower is connected with an extractant extraction pipeline. According to the utility model, a rectifying tower device and a reboiler are saved, and the thermal load of the reboiler is reduced on the basis of improving the thermodynamic efficiency in the tower, so that the aim of saving energy is fulfilled.

A combined gas turbine engine and hydrogen fuel cell system comprises a hydrogen fuelled gas turbine engine (203), a cryogenic liquid hydrogen fuel tank (104), a first fuel offtake (220) configured and arranged to divert a portion of hydrogen fuel from a main fuel conduit (217), a burner (222) configured and arranged to burn the portion of hydrogen fuel diverted from the main fuel conduit (217), a heat exchanger (224) configured and arranged to transfer heat from exhaust gasses produced by the burner (222) to hydrogen fuel in the main fuel conduit (217), a second fuel offtake (262) arranged to divert a portion of hydrogen fuel from the main fuel conduit (217) downstream of the heat exchanger (224), and a hydrogen fuel cell (260) configured and arranged to produce electric power using hydrogen fuel diverted from the second fuel offtake (262).