46results about How to "Achieve liquefaction" patented technology

The invention discloses a hydrogen liquefaction process comprising a nitrogen refrigeration cycle, a helium refrigeration cycle and a hydrogen refrigeration cycle. In the technical scheme, liquid helium generated by a liquid helium and air separating device is used as a refrigeration working medium, refrigerating capacity required by hydrogen condensation and liquefaction is provided by the liquid helium, rewarmed helium gas and nitrogen gas are respectively recycled and can be turned into the liquid helium and liquid nitrogen after being processed correspondingly when the refrigerating capacity is provided for the hydrogen liquefaction by the liquid helium and the liquid nitrogen, thus the continuous refrigerating capacity is provided for the hydrogen refrigeration cycle by the helium refrigeration cycle and the nitrogen refrigeration cycle, waste caused by directly discharging the helium gas or the nitrogen gas is avoided, and energy sources are saved. In the intention, operation that any one of the three refrigeration cycles is independent of the other two refrigeration cycles is realized, and heat quantity exchange is carried out among the three refrigeration cycles, thus liquid hydrogen generation is finally completed, and the liquefaction of hydrogen gas is realized by sequentially utilizing the refrigerating capacity of the liquid helium and the liquid nitrogen in the hydrogen refrigeration cycle.

The invention discloses a freezing fixation flexible clamp used for numerical control cutting machining of a thin-walled part. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part comprises a clamping mechanism and a longitudinal positioning mechanism, wherein after the clamping mechanism clamps the thin-walled part, the thin-walled part is positioned on a lathe. The longitudinal positioning mechanism is arranged below the thin-walled part on the lathe and is wholly a container containing phase change material, a vertical support is arranged on the upper surface of the phase change material in a floating mode, and a cooling passage is designed between two opposite lateral walls in the container. Therefore, after the clamping mechanism clamps the thin-walled part, the bottom surface of the thin-walled part contacts the support and applies pressure on the support in the process of contacting, and the support is sunk. At present, cooling gas is injected into the cooling passage through a vortex tube to enable the phase change material to be converted into a solid state, the support is frozen and fixed, and longitudinal positioning of the thin-walled part is achieved. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part has the advantages of being obvious in effect, convenient to achieve, low in cost, and free of pollution to the environment, and effectively improving efficiency and machining quality in the process of numerical control cutting machining of a weak-rigidity process system.

The invention discloses a circulation system for a seawater temperature difference power generation device. By adding a valve, the current limitation of the No. 2 water pipe and the No. 4 water pipe is realized, and the water pressure of the sea water is used to replace the two cold and hot sea water pumps. The energy consumption of the device is reduced by 90%. By adding a distributor, the mixed treatment between high-temperature seawater and normal-temperature seawater is realized. By adding an IDC server, the server cooling pipe can make full use of the waste heat of the IDC and carry out the seawater treatment. In order to advance the heating temperature to about 70 degrees, by adding a distiller and No. 2 condenser, there is a height difference between the distiller and the No. 2 condenser, so that the distilled water vapor is transported to the No. 2 condenser in a gaseous state. , By adding the No. 2 condenser, the No. 2 condenser of the condensing equipment can be used for air-cooled cooling and heat exchange to produce water vapor liquefaction.

The invention discloses a domestic garbage pretreatment device and a pretreatment method thereof, belonging to the technical field of garbage pretreatment, comprising: a base; an outer cylinder arranged on the upper side of the base; To achieve support, the upper part of the outer cylinder is designed to be open, and the lower part of the outer cylinder is designed to be closed. tube; the annular baffle arranged inside the outer cylinder, the annular baffle is connected to the support feet through multiple sets of heat-conducting connecting rods, the upper and lower parts of the annular baffle are designed with openings; the inner cylinder arranged inside the annular baffle, the inner cylinder The upper part is designed to be open, and the lower part of the inner cylinder is designed to be closed, and the circumferential surface of the inner cylinder is provided with a plurality of evenly distributed drainage holes; the invention integrates crushing, drying and solid-liquid separation in a clever way.

The invention discloses a deoxygenation and denitrification system for oxygen-containing coal bed gas. The system includes a cold box, a rectification tower, a coal bed gas deoxidation and denitrification mechanism, a mixed refrigerant circulation mechanism and a nitrogen refrigerant circulation mechanism; the mixed refrigerant circulation mechanism provides cooling capacity for the cold box; The cooling capacity is provided by the box and the rectification tower; the coalbed methane deoxygenation and denitrification mechanism includes the feed gas pipeline, the recondenser arranged at the top of the rectification tower and the reboiler arranged at the bottom of the rectification tower; the feed gas pipeline and all The above-mentioned cold box is connected, and then connected with the reboiler after being drawn out from the cold box; the feed gas pipeline is drawn out from the reboiler and then enters the cold box, and then connected with the rectification tower after being drawn out from the cold box; The gas phase outlet of the reboiler is connected with the cold box through the pipeline, and the pipeline is connected with the LNG storage tank after being cooled by the cold box. The invention can realize the liquefaction of coalbed methane with a methane content of 30-90% in raw material gas, reduce carbon emission, and recover natural gas resources to the greatest extent.