34results about How to "Lower latent heat of vaporization" patented technology

The invention discloses a high-content environmental alcohol ether fuel used for a compression ignition engine, which belongs to the technical field of alcohol ether fuel clean energy. The alcohol ether fuel comprises the following raw materials: methanol or ethanol or a mixture of methanol and ethanol, toluene, stearic acid, hexamethylphosphoric triamide, a nitryl solvent, acetone, fatty acid methyl ester, n-alkane, N-toluidine, plant oil, an alcohol fuel ether stabilizing agent, a catalysis combustion-supporting agent, an anti-knock reinforcing agent, a cetane number regulator, an eduction agent, an alcohol fuel recognition agent, an alcohol fuel rubber/plastic part corrosion and swelling inhibitor, an alcohol fuel metal corrosion inhibitor, an antioxidant anti-gum inhibitor, a metal deactivator, a corrosion inhibitor, an antistatic agent, a purification dispersant, an anti-wear repair agent, and an alcohol fuel sterilizing agent. The high-content environmental alcohol ether fuel has the advantages of stable performance, strong power, full combustion, good anti-knock property, good acceleration speed, easy starting, no air resistance, and low fuel consumption, and is especially suitable for the compression ignition engine.

The invention relates to a subcritical vapor auxiliary work done gasoline engine which comprises a water injector in a cylinder of the gasoline engine, wherein, the water injector comprises a water tank, an electric control unit, and water pumps, a water guideway, a water injection nozzle and a temperature sensor which are controlled by the electric control unit. The water injector is characterized in that the water pumps comprise a low pressure water pump and a high pressure water pump pressurizing water to be above 200bar, the low pressure water pump is arranged in the water tank and is communicated with the high pressure water pump, the high pressure water pump is communicated with the water guideway by a high pressure water pipe, the water injection nozzle is communicated with the water guideway, and a water injection opening extends into a combustion chamber of the gasoline engine. The gasoline engine also comprises a gasoline engine exhaust pipe used for heating water to above 250 DEG C and not more than 374.2 DEG C, and a high pressure water pipe penetrates through the exhaust pipe and then is communicated with the water guideway. The gasoline engine utilizes the waste heat of engine tail gas to do work circularly, thereby saving oil; the temperature of water injected into the cylinder is in a subcritical state, and the water is instantaneously vaporized in the cylinder under the pressure condition, thereby increasing the explosion pressure of the cylinder; and the torque output and the power are improved under the premise that the oil injection amount is not increased.

The invention relates to a butanediol spraying vacuum pump. The pump of the invention is characterized in that a primary butanediol sprayer is connected with a lower portion of a primary condenser, an upper portion of the primary condenser is connected with an upper portion of a secondary butanediol sprayer, a lower portion of the secondary butanediol sprayer is connected with a lower portion of a secondary condenser, an upper portion of the secondary condenser is connected with an upper portion of a third butanediol sprayer, a lower portion of the third butanediol sprayer is connected with a lower portion of a third condenser, an upper portion of the third condenser is connected with a lower portion of a fourth butanediol sprayer, a third auxiliary steam sprayer is communicated with an upper end of the third condenser, an upper portion of the fourth butanediol sprayer is communicated with an upper portion of a fourth condenser, a lower portion of the fourth condenser is connected with a vapor-liquid separator by a liquid-ring vacuum pump, one end of a heat exchanger is communicated with the liquid-ring vacuum pump and the other end of the heat exchanger is communicated with the vapor-liquid separator. The butanediol spraying vacuum pump has the advantages that: no waste liquid is discharged; the energy consumption is reduced; the steam spray vacuum pump in the invention has no moving part during runtime, the butanediol spraying vacuum pump is suitable for long-term and continuous operation, and the maintenance period is prolonged.

The invention discloses an optimized carbon dioxide capture process, which solves the problems of high regeneration energy consumption and high investment in the carbon dioxide capture process of theprior art and has the effects of reducing heat loss, sufficiently recovering solution in tail gas and reducing cost. The technical scheme is characterized in that the optimized carbon dioxide captureprocess comprises the following steps: under the function of a fan, exhaust gas is dehydrated and cooled and then gets into an absorption tower to flow from bottom to top, alkanolamine solution is fedas absorption solution from the top of the absorption tower, and the absorption solution is in countercurrent contact with the exhaust gas to remove carbon dioxide; the purified decarbonized exhaustgas gets into a water scrubbing tower; enriched liquid absorbed from the bottom of the absorption tower is sent into a heat exchanger by an enriched liquid pump, the enriched liquid gets in from the top of a regeneration tower after heat exchange, and after stripping desorption, the enriched liquid is sent into a reboiler and reboiled; gas mixture which is discharged from the top of the regeneration tower is guided into a heat exchanger to undergo water cooling, and then gets into a gas-liquid separator to undergo gas-liquid separation, and separated liquid is guided into the water scrubbing tower.

The invention discloses an ethane recovery method using a combination of pre-pressurization and propane refrigeration, belonging to the technical field of natural gas processing. The method is established on the basis of a conventional ethane recovery process; directed at the characteristic that a low-pressure rich gas ethane recovery process has great demand for cooling capacity, the method adopts the combination of feed gas pre-pressurization and propane refrigeration; so the refrigerating capacity of an expansion machine can be increased under the working condition that the pre-cooling capacity of the feed gas is insufficient, and the ethane recovery process has a high ethane recovery rate (greater than 95%) under a low-pressure rich gas working condition. According to the method, a compressor is arranged at a process inlet to pressurize the feed gas, so latent heat of vaporization of the feed gas is effectively reduced in a high-pressure state, cooling quantity required by precooling of the feed gas is reduced, and the circulation quantity of propane is reduced; and thus, the energy consumption of a refrigeration cycle compressor and total energy consumption of the process arereduced under the condition that high ethane recovery rate is guaranteed. Meanwhile, compared with an ethane recovery process with the same ethane recovery rate and with a stepped refrigeration cycleor mixed refrigerant cycle, the whole process structure of the method in the invention is greatly simplified, and the design and operation of the method are easy.

The invention provides a method and system for preparing 1,3-propylene glycol from glycerin; the method comprises the following steps: mixing a glycerin aqueous solution with hydrogen, introducing the obtained mixture into a hydrogenation unit, contacting the glycerin aqueous solution, hydrogen and a catalyst under reaction conditions, and carrying out a reaction to generate a hydrogenation mixed product containing 1,3-propylene glycol; and introducing the hydrogenated mixed product into a separation unit, and separating out 1, 3-propylene glycol and a by-product, wherein the catalyst comprises a carrier and an active component loaded on the carrier, the carrier comprises a carbide of a metal M and an oxide of the metal M, M is selected from a group VIB metal, and the active component is selected from one or more of metal components of a group VIII metal. According to the method, the specific catalyst is adopted in the selected system, the hydrogen and the glycerol pass through the process at one time, by means of the process, and the catalyst still keeps complete conversion of the glycerol at a high space velocity; meanwhile, the selectivity of the 1,3-propylene glycol is high, and industrial popularization is facilitated.

The present invention relates to a method for preparing panax notoginseng total saponin freeze drying powder through convection heat transfer type freeze drying. According to the present invention, by using the convection heat transfer type freeze drying preparation method of the panax notoginseng total saponin, drying is performed according to the predetermined freeze-drying process to obtain the freeze drying product of the panax notoginseng total saponin or the composition thereof, wherein the water content is extremely low, and the time for achieving the complete freeze-drying state is short.

The present invention discloses a van type vacuum drying device for urban sludge. The device comprises: a drying box, wherein a vacuum pump is connected to the drying box; an air distribution plate isarranged inside the drying box to divide the drying box into an upper material conveying area and a lower air supply area, and air distribution channels are arranged in the air distribution plate; amaterial conveying system is arranged in the material conveying area, a heat exchanger is arranged in the air supply area, and gas entering the air supply area is heated through the heat exchanger andthen introduced into the material conveying area through the air distribution channels of the air distribution plate to heat and dry materials conveyed by the material conveying system, and a hot aircirculation system is also connected to the drying box. The device is applicable for drying the urban sludge, provides favorable material conveying conditions and pressure, temperature and wind powerconditions of a heat medium for sludge drying, improves sludge drying rate, does not overflow malodor in the drying process, and has good environmental friendliness.

The invention provides an n-propyl acetate energy-saving process and process equipment. The equipment comprises a rectifying column, wherein a liquid phase outlet of the rectifying column is connectedwith a finished product extraction pump, the finished product extraction pump is connected to a finished product tank, a gas phase outlet of the rectifying column is connected to a tower top condenser, the column top condenser is connected to a phase splitter, and a split phase outlet of the phase splitter is connected to external extraction equipment and a reflux inlet of the rectifying column.Gas-phase extraction of finished ester is improved into liquid-phase extraction, so that latent heat of vaporization of the finished ester is saved; finished ester exchanges heat with a backflow component flowing back to the rectifying column from the phase splitter and then is conveyed to the finished product tank, so that sensible heat of the finished ester is fully utilized, energy is effectively saved, and consumption is reduced.

The present invention relates to applications of a convection heat transfer method in a dianhydrodulcitol freeze drying process. According to the present invention, by using the convection heat transfer type freeze drying preparation method of the dianhydrodulcitol freeze drying powder, drying is performed according to the predetermined freeze-drying process to obtain the freeze drying product of the dianhydrodulcitol or the composition thereof, the melting point is high and is in the range of 99.5-103.5 DEG C, the time for achieving the complete freeze-drying state is short, the freeze drying product is the loose amorphous body, the melting point is not changed after the freeze drying product is stored for 200 days at a room temperature in a sealed manner, and the quality stability of the freeze drying product of the present invention is significantly superior to the quality stability of the dianhydrodulcitol freeze drying powder prepared in the prior art.

The invention relates to a method and a device for treating high-salinity organic wastewater. The method is realized through the following functional areas: a process strengthening area, a multi-stage vaporization area, a buffer regulation area, a crystallization separation area and a biological treatment area, the high-salinity organic wastewater passes through the process strengthening area and is subjected to process strengthening under the action of a filler and a field effect, and by changing the physicochemical properties of a solution, The vaporization temperature of A solvent is reduced. Then the solvent enters the multi-stage vaporization area at the lower part of the main reactor to accelerate the vaporization rate of the solvent. The buffer regulation area adjusts the liquid level of a tower kettle concentrated solution of the main reactor, and part of the concentrated solution is circulated back to the multi-stage vaporization area. The residual concentrated solution in the buffer regulation area enters the crystallization separation area, and carnallite in the concentrated solution is crystallized out. Vaporized steam is condensed, and condensate enters a biological treatment area to remove organic matter. According to the method, the salt content and COD in the high-salinity wastewater are effectively reduced, the crystallization effect is good, the energy consumption is low, and corrosion of the wastewater to equipment is weakened under low-temperature operation.

The invention relates to a process method for recycling acetone from exhaust gas. The process method comprises the steps: firstly, the to-be-treated gas containing trace acetone is absorbed by absorption water in an absorption tower, then the diluted acetone water obtained at a tower bottom is separated in a liquid-liquid phase separator, one stream of the material liquid obtained from separation and having high acetone mass fraction is subjected to pressure reduction by a pressure reducer and then goes into a distillation tower for reduced pressure distillation, and the acetone product is extracted from a tower top. The process method improves the work efficiency and stability, can greatly reduce the energy consumption of the acetone recovery process, and has significant practicability and economic benefits.

The invention discloses a treatment system for a percolate concentrated solution of a garbage incineration power plant. The treatment system comprises a storage tank which is connected with a filtering system through a pipeline; the filtering system is connected with a conveying system through a pipeline; the conveying system is connected with a heating system through a pipeline; the heating system is connected with a spraying system through a pipeline. A treatment method for the percolate concentrated solution of the garbage incineration power plant comprises the following steps: firstly, collecting the percolate concentrated solution through the storage tank; opening a pipeline blowing system to carry out steam or air blowing on a conveying pipeline of the whole system, so as to ensure the cleanliness of the pipeline; closing the pipeline blowing system; then starting a conveying pump in the conveying system; under the power of the conveying pump, conveying the percolate concentratedsolution in the storage tank into the filtering system and carrying out second-grade filtering treatment; then conveying into the heating system and heating; heating the percolate concentrated solution to 80 to 90 DEG C; finally, conveying the heated percolate concentrated solution to the spraying system, and spraying into a furnace for combustion through a furnace-top spraying gun and a gun headof the spraying gun in the spraying system.

The invention provides a water vapor phase change energy-saving apparatus capable of reducing vaporization potential heat value under power station boiler and industrial boiler water supply system. The energy-saving apparatus comprises a water inlet, a water outlet, a shell, a magnetization unit and a magnetization unit fixing device; the magnetization unit has multiple groups which are fixed by the magnetization unit fixing device and tightly arranged along the axial direction of a water-supply-pipe; the magnetization unit and the magnetization unit fixing device occupy the pipe space besides the water inlet and the water outlet; the magnetization unit comprises multiple groups of paired rare earth permanent magnets; and the any adjacent two groups of magnetization units are fixed on the pipeline cross section with wide angle of rotation angle.