37results about How to "No overheating phenomenon" patented technology

The invention relates to a pretreatment method for desulphurization adsorbents. The pretreatment method comprises: desulphurization adsorbents and hydrocarbon raw materials containing alkenes are subjected to contact reaction under a non-hydrogen condition. The invention also relates to a desulphurization method for sulfur-containing hydrocarbon raw materials. The desulphurization method comprises: desulphurization adsorbents are pretreated according to the above method, and the pretreated desulphurization adsorbents are obtained; sulfur-containing hydrocarbon raw materials, hydrogen donors and the pretreated desulphurization adsorbents are subjected to contact reaction under an adsorption desulphurization reaction condition. The pretreatment method for desulphurization adsorbents takes an obviously short time, and when catalytic cracking gasoline with high content of alkenes is subjected to desulphurization, the pretreated desulphurization adsorbents obtained through the pretreatment method can prevent reactor temperature runaway phenomena caused by vast alkene saturation during the startup process effectively, and the startup difficulty is lowered.

The invention discloses a method for controlling the temperature of the coolant outlet of an electronic device. The method can solve the problem that the temperature of the coolant outlet exceeds theupper limit when the electronic device is in transient operation. The method comprises the following steps of: selecting a phase change material having a phase change point between the highest workingambient temperature and the allowable temperature of a key component in the electronic device; packaging the selected phase change material in a phase change expansion valve having one side preparedfrom a flexible heat conduction material; packaging the selected phase change material in a metal plate to form a phase change energy storage device; constructing a liquid cooling system having an A cold plate, a B cold plate, the phase change energy storage device, the phase change expansion valve and diverting and converging pipelines; placing the phase change expansion valve downstream of an Acold plate flow channel; controlling the upper limit of the temperature of the coolant outlet when the electronic device is in transient operation by the synergistic effect of the valve effect and theenergy storage and discharge effect of the phase change device; if the heat sink A cold plate flow channel for heat transfer is cut off, the phase change energy storage device transfers the heat instead in order to supply the heat to the heat sink B cold plate.

The invention relates to a method for preparing liquefied natural gas from semi-coke tail gas. The method includes: firstly, after decoking and benzene and naphthalene removal of semi-coke tail gas, and sending to a rectisol unit for purification and desulfurization; then, mixing the desulfurized semi-coke tail gas with high-methane gas, jointly sending into a methanation unit for methanation to obtain a crude methane gas product, sending into the rectisol unit for purification and decarbonization; finally, performing cryogenic separation to remove nitrogen to obtain liquefied natural gas. Compared with the prior art, the method has advantages that by semi-coke tail gas treatment through the rectisol unit and the methanation unit, circulation absorbing agent consumption is sharply reduced,and energy consumption and system CH4 loss in a decarbonization process are reduced; in addition, by adoption of recovered CH4-rich gas and injection of water and / or system self-produced water vaporinto the methanation unit, methanation reaction temperature rise can be controlled so as to guarantee a methanation process against temperature runaway; moreover, heat balance of a whole system can beeffectively realized in the whole process, and economy in preparation of LNG (liquefied natural gas) from the semi-coke tail gas is improved.

The invention discloses a methanation catalyst, its preparation method and application. The present invention uses aluminum isopropoxide as a raw material, and adopts a solvent-gel method to prepare aluminum sol, and simultaneously dissolves the soluble salt of an alkali metal auxiliary agent and the soluble salt of an alkaline earth metal or rare earth metal modification auxiliary agent in the aluminum sol, and then After being concentrated and then spray-molded, the microsphere carrier precursor is obtained, and after drying and calcining, the microsphere powder in a certain particle size range is screened as the catalyst carrier. The microsphere powder was used as the carrier, and the active metal Ni and the additive La were loaded by the equal volume impregnation method. 2 o 3 , thus preparing a complete methanation catalyst suitable for microchannel reactors. The catalyst prepared by the method of the invention has higher activity, hydrothermal stability and carbon deposition resistance.

The invention discloses an ageing treatment process for an Al-Er-Li alloy, and belongs to the technical field of non-ferrous metals. The alloy consists of the following components in percentage by mass: 0.1-0.19% of Er, 2.0-2.1% of Li, less than 0.1% of inevitable impurities and the balance Al. The ageing treatment process comprises the following steps of: casting the Al-Er-Li alloy, performing solid-solution treatment, and performing equal-temperature aging treatment for 24-48 hours at a temperature of 175-200 DEG C. After treated by the process, the Al-Er-Li alloy has peak ageing hardness which is kept to be higher than 100 HV.

An embodiment of the present invention provides a water-cooled and heat-dissipating display module. The display module includes a display panel and a lamp board. A plurality of LED beads are arranged on the top surface of the lamp board near the display panel. A cooling cavity is provided at the bottom of the lamp board away from the display panel; a cooling water belt is arranged in the cooling cavity, and the cooling water belt is arranged along the inner surface of the cooling cavity. The display module provided by the present invention can increase the heat dissipation rate by arranging cooling water belts in the heat dissipation cavity, ensure that the working temperature of the lamp panel is normal, and will not cause excessive temperature, thereby ensuring the luminous efficiency and stable operation of the LED lamp bead The normality of sex and service life. In addition, because the heat generated by the light board is absorbed in time, it can also ensure the stable operation of the display panel.

The invention belongs to the technical field of the purification of coke oven gas, and relates to a method and system for heating a crude benzene storage tank, in particular to an energy-saving method and an energy-saving system for heating the coking crude benzene storage tank. According to the method and the system, the conventional coked hot washing oil (at the temperature of between 80 and 95 DEG C) is used as a heating medium; a pipeline which is connected to an outlet of a hot lean oil pump is connected with a heater of the crude benzene storage tank, so that the hot washing oil is subjected to indirect heat exchange with materials in the tank by the heater of the storage tank, and after temperature of the hot washing oil is reduced to be 60 to 70 DEG C, the hot washing oil flows back to a lean oil tank; and the materials in the storage tank are heated to be 60 to 70 DEG C by the hot washing oil to fulfill the aim of the comprehensive utilization of waste heat. The method and the system are easy to operate, the temperature of the heated materials is easy to control, and the waste heat of the conventional hot washing oil is utilized fully; and the hot washing oil replaces steam to be used for the heating and heat preservation of the storage tank, so that a large amount of energy is saved, the production cost is reduced, the temperature drop of the hot washing oil to be cooled is realized to a certain degree, and energy consumption is reduced.

The invention belongs to the field of thermal power boiler energy saving, and particularly relates to a fuel oil type full-automatic air heater. The fuel oil type full-automatic air heater mainly solves the problem that a fuel oil type heater is poor in safety and hot air temperature adjusting is not sensitive. The air heater mainly comprises a casting material fireproof layer, a second-stage combustion cylinder, a first-stage combustion cylinder, a control cabinet, an oil gun assembly, an electric adjusting valve, oil returning branch pipes, a compression air pipe joint and the like; smoke backflow formed by rotational flow pieces on oil nozzles is used for reinforcing combustion, multi-stage air distribution holes with the hole diameters gradually increased are used for achieving period-divided supplementing of the oxygen amount needed by combustion, the heat storage property of a heat storage cover is used for reinforcing the fuel oil gasifying, compressed air is used for sealing anoil gun casing pipe, oil gun online maintaining is achieved, online connection is used for adjusting the oil returning pressure to achieve automatic adjusting of force output of the oil gun, safety of fuel oil type air heating and hot air temperature controllability can be greatly improved, and the problem that an oil gun of the fuel oil type air heater cannot be subjected to online maintaining is solved.