31results about How to "Reduce heat transfer load" patented technology

The invention provides a separated treatment and resource utilization technological method and device for carbon fiber production wastewater. The device comprises a first vacuum pump unit, a second vacuum pump unit, an acrylonitrile removing tower, a dimethyl sulfoxide concentrating tower, a crude product tower and a refining tower. According to the method, wastewater containing 0.5%-1% of acrylonitrile and 1%-5% of dimethyl sulfoxide enters the acrylonitrile removing tower and is subjected to acrylonitrile removal through pressure reduction for separated treatment, tower bottom solution wastewater is subjected to water removal through pressure reduction in the dimethyl sulfoxide concentrating tower and the crude product tower, the content of dimethyl sulfoxide is up to 99%, the dimethyl sulfoxide is subjected to pressure-reducing distillation in the refining tower, and accordingly, dimethyl sulfoxide with the purity higher than 99.97% is obtained. According to the method and the device, the wastewater is subjected to acrylonitrile removal through pressure reduction for separated treatment, the environmental protection treatment problems that the wastewater containing acrylonitrile is difficult to degrade, the treatment cost is high and the like are solved, distillation extraction and high-purity refining recovery of low-concentration dimethyl sulfoxide in the wastewater are realized synchronously, the technological process is simple, the resource recovery efficiency is high, the purity of recovered dimethyl sulfoxide is high, and the wastewater treatment cost is greatly reduced.

This invention relates to a multistage solution dehumidification method characterizing the solution dehumidification is classified into two or more stages, each stage solution circulates independently with different concentration, yet single-way transition exists between stages from high to low density and the most condensed solution stage is supplemented a certain amount of solution from outside and the weak solution stage exhausts a certain amount of solution, then the being processed gas will be dried via stages. This invention utilizes various cooling and gas-liquid contact way flexiblely.

The invention discloses an ethane recovery method with an absorption tower suitable for rich gas. Raw material gas is cooled by a first cold box and then enters a separator for pre-separation; a gas phase separated by the separator enters a second cold box and is further cooled and then enters a low temperature separator; a gas phase separated by the low temperature separator totally enters the expansion end of a turbo-expander for expansion cooling, and then enters the middle-upper part of a demethanizer, a part of condensate of the bottom of the absorption tower is reheated in the first coldbox and is gasified in a large amount mode and then enters the bottom portion of the absorption tower, and the other part of the condensate is directly connected into the middle of the demethanizer;the gas phase of the top of the absorption tower is discharged and deep-cooled, and then is subjected to throttling and cooling to enter the upper portion of the demethanizer; the gas phase of the topof the demethanizer is subjected to heat transfer and heating and pressurization, and then transported outwards after cooled by an air cooler; and a condensate product at the bottom of the demethanizer enters subsequent fractionation processing units such as the demethanizer for processing. The tower overhead feed enriched with more methane can enable a better absorbing and cooling effect on theupper portion of the demethanizer, and the recovery rate of the ethane is improved.

The invention provides a multi-mode circulating water supply device. The device comprises an expansion heat exchanger, a first water pump, a second water pump, a first adjusting valve, a second adjusting valve, a first temperature sensor, a second temperature sensor, a first flow sensor, a second flow sensor, a first proportional distribution valve, a second proportional distribution valve and a heat pump; and the device uses a heat pump technology for realizing the energy compensation, saves water to achieve recycling to prevent wastes of water resources, adopts the expansion heat exchanger to reduce environmental heat exchange loads, and synchronously realizes water supply, pressure fixation and exhausting of system gas or excessive water. The device is flexible, convenient, compact in structure, water-saved, environment-friendly and energy-saved, can realize constant-temperature and constant-flow water supply in different temperature areas under different heat loads, and is widely suitable for the water supply demands of different laboratories with different temperature areas and loads and other water use places.

The invention discloses a cogeneration system and method for recovering light hydrocarbons from helium-depleted natural gas and extracting helium. The cogeneration system mainly includes a heat exchanger, a low-temperature separator, a heavy contact tower, a deethanizer, a debutanizer, Four flash tanks, three mixers, multiple compressors, and multiple expanders; the cogeneration process uses self-produced refrigerant refrigeration plus expansion refrigeration plus cold box integrated heat exchange, and the raw gas is liquefied in the light hydrocarbon recovery unit Petroleum gas and stable light hydrocarbons; the dry gas from the light hydrocarbon recovery unit enters the flash helium extraction unit, and is gradually liquefied and separated to obtain LNG, externally transported gas and crude helium, and the low-temperature liquid natural gas products separated from the flash helium extraction unit are cascaded cycle as self-generating refrigerant. The invention integrates helium extraction and light hydrocarbon recovery, has a highly integrated design for the heat exchanger, and adopts self-produced refrigerant cycle refrigeration. Compared with the existing technology, it overcomes the bottleneck of single-line production capacity, reduces liquefaction costs and comprehensive Energy consumption is reduced, the performance of the device is improved, and it has practical application value.

The present invention provides a desktop type self-supply water heat exchanger performance test experiment device based on semiconductor heat pump, which utilizes semiconductor heat pump technology, has small volume, flexible control, and adapts to the requirements of desktop systems; realizes energy saving, especially when hot and cold water are supplied at the same time. Compensation, recovery of energy from cold and heat sources; circulating water supply, no need for upper and lower water, convenient and flexible experiments, not limited by the position of upper and lower water pipes; heat exchanger type expansion tank is adopted, bulky cold and hot water tanks are discarded, and the structure is compact, realizing hot and cold water The mixed cold and heat compensation heat exchange reduces the heat exchange load of the environment, and at the same time realizes water replenishment, constant pressure, and removal of system gas or excess water; the flow rate is independently adjusted and is not affected by other factors, and each test condition is easy to achieve; considering downstream and countercurrent test conditions and its influence on the thermodynamic efficiency of energy recovery to maximize energy recovery; use heat pipes for heat transport, flexible pipeline layout, long-distance transport, and negligible heat loss; the invention is flexible, convenient, and structurally Compact, water-saving, environmentally friendly, and energy-saving, it can realize the thermal performance and resistance characteristics testing of liquid-liquid heat exchangers, and is widely applicable to the experimental teaching and testing needs of heat exchangers.

The invention provides an expansion type heat exchanger based on mixed heat exchange. The expansion type heat exchanger comprises an expansion section, a water supply section, a partition, a water supplement port, an inlet, an outlet, a direct mixing heat exchanger, a water distribution mechanism, a filler, an annular weir plate, an automatic exhaust valve and a liquid level sensor. The heat exchanger and an expansion water tank are organically combined, the structure is reasonable and compact, the utilization rate of equipment is increased, the manufacturing cost is lowered, and the occupiedspace is reduced. By the adoption of the expansion type heat exchanger, the mixed cold and hot compensation heat exchange of cold and hot water is realized, the environmental heat exchange load is reduced, and meanwhile water supplement, constant pressure and elimination of system gas or over-filled water are realized. The expansion type heat exchanger is flexible and convenient to use, compact instructure and environmentally-friendly, saves water, saves energy and is widely applicable to cold and hot water supply occasions with different temperature regions and different heat loads.

The invention discloses a cascaded refrigeration cycle system coupled with an ejector. In the system, the superheated steam discharged from the high and low temperature stage compressor will be heated and vaporized and then boosted by a booster pump to the high temperature stage supercooled liquid refrigeration under the generation pressure. The saturated steam generated is used as the working steam of the refrigerant flash gas separated by the gas-liquid separator after the ejector injects the high-temperature stage throttling. Since the sensible heat of the superheated gas discharged from the low-temperature stage compressor is utilized in the three-channel generator, the load of the condensing evaporator is effectively reduced, that is, the cooling capacity of the high-temperature stage refrigeration cycle is reduced. Under the premise of the same cooling capacity of the low-temperature stage, the refrigeration load of the high-temperature stage cycle and the power consumption of the compressor will be reduced, and the COP of the entire cascade refrigeration cycle will be improved. A preliminary estimate of the cascade refrigeration system composed of NH3 and CO2 can be obtained: the refrigeration coefficient of this system will be increased by about 10% compared with the traditional cascade refrigeration system.

The invention discloses an efficient silent power generation device based on fuel catalytic reforming, and relates to the technical field of power equipment. The efficient silent power generation device comprises a fuel reforming system, a solid oxide fuel cell and an integrated control system, wherein the fuel reforming system comprises a micro-channel reactor and an alumina microsphere disposedin the micro-channel reactor, and is used for gasifying and reforming the fuel oil into a fuel gas; the solid oxide fuel cell includes an oxygen ion conductor electrolyte plate, a fuel electrode and an air electrode; the integrated control system includes an electronic control system and a thermal management system. The efficient silent power generation device converts the fuel oil into CO, H2 andCH4 through the fuel reforming system so as to provide fuel for the fuel cell, solves the hydrogen and methane storage and transportation problem of the traditional fuel cell, and achieve the power generation energy efficiency of 40%.

A multi-element mixed working medium back-heating type throttling and refrigerating circulation system with dephlegmator-separator is composed of a compressor module, a back-heating heat exchanger module, a throttling module, an evaporative heat exchanging module and connecting pipes thereof. A high-pressure outlet of the refrigerating compressor module is connected with a refrigerant high-pressure inlet of the back-heating heat exchanger module, a refrigerant high-pressure outlet of the back-heating heat exchanger module is connected with a refrigerant high-pressure inlet of the throttling module, a refrigerant low-pressure inlet of the throttling module is connected with the evaporative heat exchanging module, an outlet of the evaporative heat exchanging module is connected with a refrigerant low-pressure inlet of the back-heating heat exchanger module, a refrigerant low-pressure outlet of the back-heating heat exchanger module is connected with a low-pressure inlet of the refrigerating compressor module. The back-heating heat exchanger module is composed of dephlegmator-separator sub modules from first stage to fifth stage, and the dephlegmator-separator sub module of any stage is of eight different structures. The system can realize refrigeration of fixed temperature zone at a low temperature effectively, and can also be applicable to fields with complicated load, such as multi-element gas liquefied separation.

The invention discloses a method of reducing the interstage temperature of a propane compressor in a propane compressor cycle refrigerating system, and the method comprises the flowing steps: communicating a propane accumulating tank in the propane compressor cycle refrigerating system with each anti-surge pipeline or return pipeline, and arranging throttle valves the communicated pipelines; and arranging adjusting valves on the pipelines through which the propane accumulating tank is communicated with the anti-surge pipelines or the return pipelines. The method of reducing the interstage temperature of the propane compressor in the propane compressor cycle refrigerating system can be used for effectively improving the working efficiency of the compressor, reducing the heat exchange load of a heat exchanger at the outlet of the compressor, and eliminating the influence of change of interstage temperature of the compressor on the frige heat exchanger in low-load running working conditions.

The present invention provides a desktop type self-supply water heat exchanger performance test experiment device based on semiconductor heat pump, which utilizes semiconductor heat pump technology, has small volume, flexible control, and adapts to the requirements of desktop systems; realizes energy saving, especially when hot and cold water are supplied at the same time. Compensation, recovery of energy from cold and heat sources; circulating water supply, no need for upper and lower water, convenient and flexible experiments, not limited by the position of upper and lower water pipes; heat exchanger type expansion tank is adopted, bulky cold and hot water tanks are discarded, and the structure is compact, realizing hot and cold water The mixed cold and heat compensation heat exchange reduces the heat exchange load of the environment, and at the same time realizes water replenishment, constant pressure, and removal of system gas or excess water; the flow rate is independently adjusted and is not affected by other factors, and each test condition is easy to achieve; considering downstream and countercurrent test conditions and its influence on the thermodynamic efficiency of energy recovery to maximize energy recovery; use the thermoelectric power generation module for heat recovery, and at the same time realize self-power generation to meet the electricity demand of its own instruments; the invention is flexible and convenient, with a structure Compact, water-saving, environmentally friendly, and energy-saving, it can realize the thermal performance and resistance characteristics testing of liquid-liquid heat exchangers, and is widely applicable to the experimental teaching and testing needs of heat exchangers.