39results about How to "Reduce condensation load" patented technology

The invention discloses a device for combining power cycle with compression type refrigerating cycle, which can be used for simultaneously completing power cycle and compression type refrigerating cycle. The device comprises a compressor, a heat regenerator, a condenser, a reservoir, a throttle valve, an evaporator I, a working medium pump, an evaporator II, an expander and a transmission device, which are connected according to a rule. According to the device disclosed by the invention, medium-low-grade energy sources such as solar energy, geothermal energy and industrial waste heat can be utilized for driving the expander to apply work, so that the compressor is driven by the output shaft work to operate for achieving the power cycle and the refrigerating cycle. Meanwhile, the device can also be used for generating power when the operation of a refrigerating working condition is not needed. The heat regenerator is additionally arranged in the device, so that the load of the heater is reduced while the load of the condenser is reduced. The reservoir is arranged, so that the two cycles are operated independently, thereby ensuring stable refrigerating to a user. The device disclosed by the invention has a good application prospect in underserved areas of power or small areas or cold supply, and is of significance to energy conservation and emission reduction.

The invention provides a method for increasing the highest outlet water temperature of a heat pump water heater. Due to the fact that a compressor frequency reducing step is included, when a heat pump heat water control system judges that current operating parameters conform to compressor frequency reducing conditions, the compressor frequency reduces, and the circulation volume of coolants is reduced. Consequently, the condensing load of the heat pump water heater is reduced, the heat exchange temperature difference of a condenser is reduced, and the temperature of water in a water tank is further increased. According to the method, judgments are conducted according to the current operating parameters, a method of frequency reduction on a high water temperature section is adopted, and the circulation volume of the system is reduced, namely, the condensing load-heat exchange temperature difference of the system is reduced, and the heat exchange temperature difference is reduced by 5 DEG C, so that the highest water temperature can reach 55 DEG C. On the condition that the cost and the installation space of the whole machine are not increased, the purpose that the highest outlet water temperature of a R410A coolant heat pump water heater reaches 55 DEG C is achieved.

The invention provides a compression condensation system with an ejector. The compression condensation system comprises a recycled container, a refrigeration compressor, the ejector, a condenser and a recycling container. When the compression condensation system is used for a refrigerant recycling system, compressor exhaust drives an ejected refrigerant to enter the condenser together through the ejector, not all liquid refrigerants need to be completely evaporated into gas refrigerants which enter the compressor to be compressed, and temperature rise and pressure rise are avoided, so that condensation loads are few; the gas refrigerants and the liquid refrigerants are recycled at the same time, the running time is short, and the service life of the compressor is prolonged. The invention further provides a refrigeration system with an ejector. The refrigeration system comprises a gas-liquid separator, a refrigeration compressor, the ejector, a condenser, a throttle element and an evaporator. When the refrigeration system with the ejector is used for a refrigeration system, compressor exhaust ejects liquid refrigerants of the gas-liquid separator through the ejector, the air suction and exhaust quantity of the compressor can be reduced at the request that cooling loads are constant, and thus power consumption of the compressor is reduced; and the refrigerants can enter the condenser without completely passing the compressor, so that condensation loads are reduced.

The invention relates to a method and a device for treating ammonia-nitrogen wastewater and recovering ammonia, which belong to the technical field of industrial wastewater treatment and comprise a deamination tower, a heat pump reboiler, a heat pump condenser and a heat pump compressor. An ammonia-nitrogen wastewater feeding hole is formed between a rectifying section and a stripping section of the deamination tower, the rectifying section is provided with an ammonia-containing steam discharging hole and a dilute ammonia water backflow hole, and the stripping section is provided with a deaminated water discharging hole and a stripping steam feeding hole; a heat pump reboiler is circularly communicated between the deaminized water discharging hole and the stripping steam feeding hole; a heat pump condenser is circularly communicated between the ammonia-containing steam discharging hole and the dilute ammonia water backflow hole; and the heat pump condenser and the heat pump reboiler are circularly communicated through a heat pump compressor to form a heat pump cycle. Heat pump working medium steam is used for supplying heat to the heat pump reboiler to replace raw steam, so that energy is saved, and consumption is reduced; non-toxic and harmless heat pump working medium steam is pressurized by the heat pump compressor, so that the problem of potential safety hazards caused by direct pressurization of ammonia-containing steam in the prior art is solved.

The invention relates to a continuous rectification separation method and equipment for a propylene carbonate crude product. According to a technical scheme, the propylene carbonate crude product is fed into the middle part of a propylene carbonate rectifying column; the inner cavity of the propylene carbonate rectifying column is provided with a reflux distributor, a plurality of rhombic reaction promoting units, a feed distributor and a plurality of liquid stripping filtration disks from top to bottom; the outside of the propylene carbonate rectifying column is connected to a rectifying column overhead condenser, an A discharging line condenser, a B discharging line condenser and a rectifying column bottom reboiler respectively; the crude product is fed from the middle part of the rectifying column and subjected to sufficient gas-liquid material exchange under negative pressure and heating conditions in the column, thus achieving separation of high-purity propylene carbonate from other impurities; and the high-purity propylene carbonate product is distilled out from a product side line. The method and the equipment are advantageous in that the feeding point is at the middle of the column, amounts of rising gas and descending liquid in rectification and stripping sections are distributed more reasonably, the separating efficiency is increased, operation is simple and stable, product purity is high, and battery-grade purity requirements on the propylene carbonate are met.

The invention discloses an air conditioning system. The air conditioning system comprises a compressor (1) and an evaporator (2) and further comprises a refrigerating condenser (3) for indoor refrigeration and a pump body condenser (4) which is used for cooling a pump body of the compressor (1); the compressor (1), the refrigerating condenser (3) and the evaporator (2) form a main circulation loop for indoor cooling; one opening of the refrigerating condenser (3) is communicated with the evaporator (2); the outlet of the pump body condenser (4) is communicated with a pump body cooling inlet of the compressor (1) and the inlet of the pump body condenser (4) is communicated with a pump body cooling outlet of the compressor (1) to form a pump body cooling circulation loop for cooling the pump body; the system further comprises a switching module used for controlling simultaneous connections and disconnections between the other opening of the refrigerating condenser (3) and the inlet of the pump body condenser (4) and between the pump body cooling outlet and the inlet of the compressor (1). Through adoption of the air conditioning system disclosed by the invention, the refrigerating and heating performances are improved.

The invention discloses a device and a process for producing p-xylene. The device comprises a xylene fractionation unit, an adsorption separation unit and an isomerization reaction unit, wherein the adsorption separation unit comprises an adsorption separation tower, an extraction liquid fractionating tower, a raffinate tower and a heat exchanger II, and the isomerization reaction unit comprises an isomerization reactor, an isomerization product fractionating tower, a white clay tower, an isomerization reaction heating furnace, a heat exchanger III, a heat exchanger IV, a heat exchanger V anda compressor. The invention also provides a process for producing p-xylene. According to the invention, with the device and the process, the equipment investment and the occupied area are reduced, theoperation load of the xylene tower is reduced, the fuel gas consumption of the xylene reboiler and the isomerization reaction heating furnace is saved, the heat exchange network is optimized, the energy consumption is greatly reduced, and the economic benefit and the social benefit are improved.

The invention discloses a double-purpose air conditioner system combining absorption refrigeration and evaporative cooling and used in winter and summer. The system comprises an evaporation cooling air conditioner unit and an adsorption refrigeration system which are connected through a pipeline network. The double-purpose air conditioner system used in winter and summer solves the problems that an existing evaporation cooling air conditioner unit can not be used for heating in winter, and direct-burning type absorption refrigeration wastes a lot of energy.

An internal energy integrated rectification device comprises a rectification tower with an inner layer tower body and an outer layer tower body, the outer layer tower body is a stripping section, the inner layer tower body is a rectification section, a feed inlet I formed in the upper portion of the outer layer tower body is externally connected with a feed preheater, a liquid outlet I is formed in the bottom of the outer layer tower body, and the liquid outlet I is connected with a tower bottom discharge pipe and connected with a feed inlet V after passing through a reboiler; a gas outlet I is formed in the top of the outer layer tower body, is externally connected with a compressor inlet superheater and a compressor in sequence, and is connected with a feeding hole II in the bottom of the inner layer tower body; a gas outlet II is formed in the top of the inner layer tower body, is externally connected with a compressor inlet superheater and a feeding preheater in sequence and then is connected with a tower top discharging pipe and a feeding hole III in the top of the inner layer tower body; a liquid outlet II is formed in the bottom of the inner layer tower body and is connected with a feeding hole I after passing through a reboiler and a throttling valve in sequence; a silk screen condensation plate is arranged below the top gas outlet I in the outer layer tower body; and liquid distribution devices and packing layers which are distributed at intervals are arranged in the outer layer tower body and the inner layer tower body. When the device is used for rectification, the effective energy loss in the rectification process is reduced, and the separation energy consumption is reduced.

An internal energy integrated rectifying device for three-component separation comprises a rectifying tower with an inner tower body and an outer tower body, the outer tower body is a stripping section, the inner tower body is a rectifying section, and the inner tower body is provided with a partition plate; and through the arrangement of tower top gas phase and tower bottom liquid phase discharging and feeding paths in all tower bodies, heat exchangers, condensers, reboilers, compressors, throttling valves and the like and the arrangement of liquid distribution devices and silk screen condensation plates in the towers, heat and cold of the rectifying tower are fully utilized, and heat integration is achieved. When the device is used for rectification, the separation of three components can be realized in one tower body, meanwhile, the effective energy loss in the rectification process is reduced, and the condensation load and the reboiling load are reduced.

The invention discloses a double-condenser air conditioning device. The air conditioning device comprises a refrigerating system A, a refrigerating system B, a ventilating system and an electric control system, wherein the compressor A, the condenser AI, the condenser AII, the liquid accumulator A, the filter A, the thermostatic expansion valve A, the evaporator A and the gas-liquid separator A form a refrigerating system A; the compressor B, the condenser BI, the condenser BII, the liquid accumulator B, the filter B, the thermostatic expansion valve B, the evaporator B and the gas-liquid separator B form a refrigerating system B; the condenser AI and the condenser BII are coupled together to share an axial flow fan A; the condenser AII and the condenser BI are coupled together to share anaxial flow fan B; and the evaporator A and the evaporator B are coupled together to share a centrifugal fan. The air conditioner can efficiently achieve air conditioning. In addition, a refrigeratingsystem can be effectively protected, safety and reliability are achieved, and energy is saved.

The invention discloses a device and a process for producing aromatic hydrocarbon products. The device comprises a xylene fractionation unit, an adsorption separation unit and an isomerization reaction unit, wherein the adsorption separation unit comprises an adsorption separation tower, an extraction liquid fractionating tower, a raffinate tower and a heat exchanger II, and the isomerization reaction unit comprises an isomerization reaction rectifying tower, a white clay tower, an isomerization reaction heating furnace, a heat exchanger III, a heat exchanger IV, a heat exchanger VI and a compressor. The invention also provides a process for producing aromatic hydrocarbon products. With the device and the process of the invention, the equipment investment is reduced, the operation load ofthe xylene tower is reduced, the fuel gas consumption of the xylene reboiler is saved, the isomerization reaction and the product separation are carried out at the same time so as to achieve the coupling utilization of energy, the heat exchange network is optimized, the consumption of fuel gas of the isomerization reaction heating furnace is reduced, the energy consumption is greatly reduced, andthe economic benefit and the social benefit are improved.

The invention discloses a C8 aromatic hydrocarbon separation and conversion process and system. The process comprises the following steps: enabling a C8 aromatic hydrocarbon raw material to enter a xylene tower for fractionation, sending a tower top material flow to an adsorption separation tower through heat exchange, making an obtained p-xylene-rich extract liquid enter an extract liquid fractionating tower through a heat exchanger, letting p-xylene-poor raffinate enter a raffinate tower, and subjecting an upper side material to heat exchange, performing heating by an isomerization reaction heating furnace, carrying out isomerization reaction, carrying out heat exchange on the reaction product, removing olefin in a hydrogenation reactor, and introducing the reaction product into an isomerization product fractionating tower which is in the form of a dividing wall tower; wherein tower top materials are C7 or below light hydrocarbon and hydrogen, side line materials are mixed with adsorption separation feed, and the tower bottom discharged material is C9<+> aromatic hydrocarbon. Directed at the defects of the prior art, a heat exchange network is optimized, the energy consumption is greatly reduced, meanwhile, the problems of poor adsorption efficiency, frequent replacement of spent bleaching clay, environmental pollution and the like caused by quick deactivation of the bleaching clay and limited adsorption capacity are solved, and the social and economic benefits are improved.

The invention belongs to the field of chemical engineering, and discloses a reaction kettle which comprises a kettle body and a stirrer extending into the kettle body, and a cooling layer is arrangedat the upper part of an inner cavity of the kettle body; the cooling layer is at least one fin layer; and the fin layer is composed of a plurality of cooling pipes side by side, and fins are arrangedon the cooling pipes. According to the reaction kettle, the cooling layer with the fins is additionally arranged, so that a gasified solvent can be repeatedly liquefied in the kettle, the condensationload of an external cooler is reduced, the possibility of implosion of polymerization reaction is reduced, and the consistency of reaction products is improved. Meanwhile, the invention also providesa reaction system and a reaction method.