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

The invention relates to an ethanol distillation dehydration energy saving technique and a device thereof, the technical proposal of which is that (a) part of gas phase at the tower top of an ethanol rectifying tower is condensed; (b) part of condensed gas phase enters into a compressor to be pressured; (c) the compressed gas phase directly enters into an adsorption unit. Overhead gas phase obtained after ethanol raw material passes through the ethanol rectifying tower enters into a partial condenser, the obtained mixing material enters into a reflux storage tank; wherein, liquid phase material as circulating liquor returns to the ethanol rectifying tower, the gas phase material enters into the compressor, and then enters into the adsorption unit after being pressured, after absorption, the needed high concentration ethanoal product is obtained. The invention can effectively reduce heat exhaustion in the production course of high concentration ethanol and the condensation loading of the tower top of the rectifying tower, reduces the manufacturing cost of the ethanol and has good application prospect.

The invention discloses an air-conditioning system, comprising a compressor (1) and an evaporator (2), and further comprising: a refrigeration condenser (3) used for indoor refrigeration and a pump body used for cooling the pump body of the compressor (1) Condenser (4); compressor (1), refrigerating condenser (3) and evaporator (2) form the main circulation circuit for indoor cooling, an opening of refrigerating condenser (3) and evaporator (2) ) is communicated; the outlet of the pump body condenser (4) is communicated with the pump body cooling inlet of the compressor (1), and the inlet of the pump body condenser (4) is communicated with the pump body cooling outlet of the compressor (1), forming a The pump body cooling circulation circuit for cooling the pump body; also includes the control between another opening of the refrigeration condenser (3) and the inlet of the pump body condenser (4) and between the cooling outlet of the pump body and the inlet of the compressor (1) Switching components that are switched on and off at the same time. The air conditioning system provided by the invention improves the cooling and heating performance.

The invention relates to a device and method for energy saving and consumption reduction of a dimethyl carbonate device. The method comprises the following steps that (a) a mixed material of propylene carbonate, methanol and methanol base catalysts passes through a heat exchanger and then enters a reaction rectifying tower for primary reaction and fractionation; a generated azeotrope of dimethyl carbonate and the methanol enters a pressurization rectifying tower after being condensed by a tower top condenser; (b) after the separation by the pressurization rectifying tower, light ingredients enter a methanol rectifying tower to be rectified; (c) an azeotropic composition at the tower top of the methanol rectifying tower is subjected to temperature rise and pressurization through a rectifying heat pump, and is then used as a heat source of a reboiler of the methanol rectifying tower; the azeotrope discharged from the reboiler respectively enters a feeding preheater and a condenser to be cooled through the reaction rectifying tower. The device and method provided by the invention have the beneficial effects that the energy consumption is reduced by 20.2 percent; the distribution of gas phase materials in the tower is more reasonable; the mass transfer separation efficiency of the rectifying tower is improved; in addition, the continuous and regular collection of liquid samples is realized; the product monitoring frequency is greatly improved; the device can be favorably regulated in time.

The invention relates to a cycling system for improving the efficiency of a cooling compressor, cooling cylinder compression cycle for short. The cooling cylinder compression cycle of a rotor-type compressor is mainly realized in four aspects: a. cooling cylinder compression, i.e. performing low-temperature cooling to a compression strong-heat-release cylinder wall surface (defined as a heat cylinder and others are cooling cylinders), coating heat insulating ceramic on the surfaces of a tongue piece and a rolling rotor, pushing compression heat release to a cooled heat cylinder, and increasing the area of the heat cylinder or reduce the rotational speed so as to fully discharge the compression heat release and prevent the discharged gas from overheating and then to reduce the compression net work and the condensation load; b. cooling cylinder gas suction, i.e. performing the isolation of gas phase from heat insulation to high-pressure gas discharge, the cooling and heat cylinders, upper and lower covers and a gas suction pipe, and ensuring the low-temperature characteristic of a gas suction chamber by means of continuous gas suction and heat cylinder cooling so as to obtain greater cold energy; c. oil way improvement, i.e. increasing the gas-suction force; and d. recovery gas discharge overheating and motor heat releasing, for purposes of heating and compensating absorptive lubricant, wherein an absorbent has low partial pressure and strong absorption capability on the surfaces of the cooling cylinders so that the cold energy is further increased and the compression work is further reduced.

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 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 a comprehensive water-saving and energy-saving system for a power generation set. A dead stream intake pipe is connected to the air inlet end of a first heat exchanger. A compressor is connected to a refrigerant outlet and connected with a refrigerant inlet of a second heat exchanger. A refrigerant outlet of the second heat exchanger is connected with a refrigerant inlet of the first heat exchanger. The comprehensive water-saving and energy-saving system for the power generation set further comprises a condensation shell and a third heat exchanger mounted in the condensation shell. The tube pass or plate pass of the third heat exchanger is connected with the air outlet end of the first heat exchanger. The comprehensive water-saving and energy-saving system for the power generation set further comprises a fourth heat exchanger, wherein the air outlet end of the fourth heat exchanger is connected with a decompression device. An outlet of the third heat exchanger is connected with a liquid storage tank and the fourth heat exchanger; or the outlet end of the third heat exchanger is connected with a liquid storage device, and a gas-phase outlet of the liquid storage device is connected with the fourth heat exchanger. The liquid storage tank or the liquid storage device is connected with the second heat exchanger, and the water outlet end of the second heat exchanger is connected with a high-temperature water supply pipe. The phase-change heat energy of dead steam exhausted by the power generation set is extracted to be used for heating condensate water of the system, and thus the purpose of comprehensive water saving and energy saving is realized.