32results about How to "Improve carbon deposition" patented technology

The invention discloses a precursor rich in iron on the surface and rich in manganese on the core and a method for preparing a carbon-coated manganese-iron-lithium phosphate material by taking the precursor as a raw material. The primary particle size of the precursor is 15-500 nanometers; the specific surface area is 5-100 m<2>/g; iron elements are enriched 0-5 nanometers away from particle surfaces; the content of manganese within a depth range is less than 0.01 wt%; and manganese elements are intensively distributed on the cores of material particles. The method for preparing the carbon-coated manganese-iron-lithium phosphate material based on the precursor comprises the following steps: synthesizing the precursor according to the chemical formula of manganese-iron-lithium phosphate, putting the precursor, a Li-containing compound, a P-containing compound, a metal M-containing compound and a carbon source organic matter raw material into a dispersion medium, and mixing the materials to obtain a slurry; and drying and calcining the slurry to obtain the carbon-coated manganese-iron-lithium phosphate material. The precursor which is rich in iron on the surface is taken as the raw material for synthesizing the manganese-iron-lithium phosphate material, and the carbon deposition state on the surfaces of electrode material particles in a calcining process is improved, so that the electrical conductivity and electrochemical performance are improved.

The invention provides a heating substrate for a thermal print head. The heating substrate comprises an insulating substrate, wherein a bottom glaze layer is arranged on the surface of the insulatingsubstrate in whole or in part, a common electrode and an individual electrode are arranged on the surface of the insulating substrate and the bottom glaze layer, a heating resistance body is configured between the two electrodes in the main printing direction, the heating resistance body is connected to one end of the common electrode in the sub-printing direction, and a printing power source is connected to the other end of the common electrode ; the heating resistance body is connected to one end of the individual electrode in the sub-printing direction, a control IC is connected to the other end of the individual electrode; the surfaces of the heating resistance body, the common electrode and a part of the individual electrodes are covered with an insulating protective layer, a transition layer is arranged on the protective layer, and a hydrophobic and oleophobic functional layer is arranged on the transition layer, and the functional layer is made of an inorganic material, the protective layer, the transition layer and the functional layer form a surface composite layer. The heating substrate for the thermal print head has high hydrophobic and oleophobic ability, the phenomenonof carbon deposition and paper sticking in the printing process can be improved, and the service life of the thermal print head can be prolonged.

The invention relates to a high temperature pressure measuring method and a sensor for a pulse detonation engine based on ion current. The method includes as follows: when a detonation engine burns, a plurality of free electrons and ions exist in an induction area in the detonation waves; an ion probe is adopted and a stable bias voltage is applied at the poles of the probe to form a continuous ion current in a measuring current; the attenuation speed of the current has linear relation with the pressure in a detonation tube; the pressure in the detonation tube is obtained according to the attenuation speed of the ion current. The sensor has characteristics in the structure that the anode of the sensor is inserted into a high temperature ceramics insulating tube and then is inserted into a screw cap together with the high temperature ceramics insulating tube. The screw cap is arranged in the tube wall of the detonation engine; a silicon gel seal layer is arranged above the screw cap; a stable power is directly applied between the anode and the screw cap. The device has the advantage of high temperature resistance, impact resistance, simple structure, convenient mounting and maintaining and low cost; besides, the device is applicable for the pressure measuring of the pulse detonation engine under the high temperature environment.

The invention relates to an enameled brick for an oven door of a coke oven and belongs to the technical field of fireproofing material preparation. The enameled brick consists of a brick body and a glaze material coated on the surface of the brick body. The enameled brick is characterized in that the glaze material is prepared from the following ingredients in parts by weight: 45 to 55 parts of feldspar, 5 to 15 parts of quartz, 10 to 18 parts of stalactite, 0 to 6 parts of ripe talc, 4 to 10 parts of raw datong, 0 to 4 parts of Suzhou soil, 1 to 8 parts of alumina, 10 to 20 parts of zircon powder and 3 to 8 parts of barium carbonate. The oven door of the coke oven built by the enameled brick for the oven door of the coke oven provided by the invention has the advantages that the low freecarbon granule and tar penetration adhesion phenomenon can be reduced, the surface carbon deposition condition of the oven door is obviously improved in the use process, the average month adhesion deposition-free thickness is 1 to 2mm, the monthly average cleaning times are 2 to 4, the cleaning times and the cleaning difficulty of the carbon deposition of the oven door of the coke oven are effectively reduced, and the mechanical damage to the oven door of the coke oven in the cleaning process is reduced. Through the monitoring on the enameled brick used for one year, the brick body of the enameled brick for the oven door of the coke oven does not have the damage phenomenon, and the brick body surface of the brick for the oven door of the coke oven does not have tar penetration conditions.

The invention discloses a combustion chamber of a high-speed diesel engine. The combustion chamber is cylindrically arranged at the end part of a piston rod, and the combustion chamber is characterized in that the combustion chamber sequentially comprises an inward contraction port, a throat port, a bottom groove and a boss from the top end of the piston rod to the bottom of the combustion chamber, wherein the inward contraction port is of an annular arc-shaped groove with the inner diameter which is gradually reduced from the top end of the piston rod, the throat port is of an annular arc-shaped bulge connected to the bottom edge of the inward contraction port, the bottom groove is of an arc-shaped groove arranged on the edge at the bottom of the combustion chamber, the inner diameter of the throat port is smaller than those of the inward contraction port and the bottom groove, the boss is of a spherical crown-like structure arranged at the center of the bottom of the combustion chamber, a diversion table is arranged between the bottom edge of the boss and the lower edge of the bottom groove, and the diversion table is of an annular arc-shaped raised structure. The combustion chamber disclosed by the invention can be used for preventing a high-pressure injected oil beam from being subjected to a wall impingement phenomenon, improving the fuel oil spatial distribution and oil-gas mixing uniformity, and further ensuring that the engine is higher in thermal efficiency and lower uin oil consumption and emission.

The invention relates to a chemical chain hydrogen production composite oxygen carrier with an anti-carbon property and a preparation method of the chemical chain hydrogen production composite oxygen carrier. The preparation method comprises the following steps: firstly, crushing iron ore by using a crusher, and screening iron ore granules of which the particle size is within 0.2-0.45 mm; adding the iron ore into a wild-mouth bottle with a rubber plug, and vacuuming; preparing a Cu(NO3)2.3H2O solution and a KNO3 solution, uniformly mixing, adding into the wild-mouth bottle with the iron ore through by using a separating funnel, and continuously vacuuming for 1-2 hours; sealing, leaving to stand for 20 hours, and soaking the iron ore into the Cu(NO3)2*3H2O solution and the KNO3 solution; drying the mixture, and calcining at 900-950 DEG C for 4 hours, thereby obtaining the composite oxygen carrier based on the iron ore. The preparation method takes the iron ore as a raw material and is low in price and simple in process, the composite oxygen carrier prepared by using a soaking method is high in reaction activity and good in anti-carbon property, and the prepared hydrogen is high in purity.

The invention discloses an air filter for vehicles. The air filter comprises a casing, a separation structure and a flow blocking structure. A filter element is arranged in the casing and separates the casing into an air inlet side casing portion and an air exhausting side casing portion, the air inlet side casing portion is provided with an air inlet, and the air exhausting side casing portion is provided with an air exhausting port. The separation structure is arranged on the side wall of the air exhausting side casing portion and located in the air exhausting side casing portion. The separation structure is provided with an oil gas connector suitable to be connected with a crankshaft ventilation box, and one side of the separation structure facing the filter element is opened. The flow blocking structure is arranged in the separation structure so as to lead oil gas mixtures entering the separation structure to generate eddy currents. According to the air filter for the vehicles, the oil gas mixtures with a certain pressure in the crankshaft ventilation box is prevented from damaging the gas current flow field in the air exhausting side casing portion, pollution of the oil gas mixtures on a sensor disposed in the air filter is reduced, the phenomenon of car deposition and scratching in a cylinder is changed, and the service life of the engine is prolonged.

The invention discloses an accumulated carbon self-cleaning method of a spark plug. In an initial period of engine starting, an ignition coil is ignited at a normal point of the compression range of an engine and is continued to be ignited during the working process of the engine, accumulated carbon is actively cleaned by continuous ignition during the working process, at the moment, an air door of the engine is completely closed, dangers such as engine tempering and fire flamed-up cannot be caused by continuous ignition of the spark plug, a combustible mixed gas (which is already combusted) is prevented from existing around the engine after normal ignition, secondary carbon accumulation is prevented, and normal running of the engine cannot be affected.

The invention discloses a mouth-nose cooperative use electronic cigarette. The electronic cigarette comprises a mouth-smoking electronic cigarette module and a nose-smoking module, the mouth-smoking electronic cigarette module adopts one of a steam electronic cigarette and a heat-not-burn electronic cigarette, the nose-smoking module is arranged on the outer side or inside the mouth-smoking electronic cigarette module, the nose-smoking module comprises at least one essence carrier, and essence is placed in the essence carrier. By means of the mode, according to the mouth-nose cooperative use electronic cigarette, after the essence can be partially or completely transferred into the nose-smoking module from the mouth-smoking electronic cigarette module, the essence utilization rate is increased, the transmission efficiency and the distinguishing accuracy of aroma molecules reaching the olfactory nerves of the nasal cavity are improved, the use risk of the electronic cigarette caused by the fact that the essence, the essence solvent and the essence related substances enter the lung from the mouth is reduced, the types of the essence capable of being used by the electronic cigarette can be increased through the nose-smoking module, and the flavoring technology of tobacco tar, solid smoke cartridge, tobacco paste and other tobacco materials can be simplified.

The invention relates to an external ion source for a time-of-flight mass spectrometer. The external ion source comprises a gas sample inlet, an ionization chamber, a filament, a slit, a repulsion electrode, a magnetic pole, an ion lead-out slit, a heating rod, a temperature probe and a fixing rod. An external ion source device disclosed by the invention takes the gas sample inlet as a starting point and the repulsion electrode as a circle center; the fixing rod, the filament, the slit, the temperature probe, the heating rod, a dual-gas sample inlet, the fixing rod and the magnetic pole are orderly arranged on the ionization chamber in a clockwise direction; the filament, the slit, the repulsion electrode and the magnetic pile are on the same axis; the ion lead-out slit is parallel to the axis, and the repulsion electrode is an ellipse repulsion electrode. Compared with the prior art, the time-of-flight mass spectrometer has the advantages of being simple in structure, compact in structure, light in weight, less in energy consumption, high in ionization rate and convenient to clean and maintain; a multi-channel gas sample inlet is convenient to carry out inner reaction of a plurality of gas ion sources; the ion sources are heated unilaterally, the energy consumption and deposited carbon are reduced, and the time-of-flight mass spectrometer is suitable for an online and portable time-of-flight mass spectrometer ion source.

The invention discloses a machining device for machining an ultrafine hole by adopting graphite fine needle electric discharge, and relates to the technical field of fine hole electric discharge. Themachining device for machining the ultrafine hole by adopting the graphite fine needle electric discharge aims at solving the problems that a copper electrode cannot meet the size precision requirement of the ultrafine hole, and the product precision is reduced. According to the technical solution, the machining device comprises a high-voltage power supply, a nozzle and a working electrode, wherein a suspension potential is arranged between the working electrode and the nozzle, a workpiece is placed in the suspension potential, the problems of carbon deposition and large deformation of a conventional electric discharge machining copper electrode are solved by the graphite electrode, the graphite electrode is small, the discharge energy of each pulse is small, the size of a discharge mark is small, the roughness of a machining surface is small as well, and the shape precision converted by the graphite electrode is high, so that the size precision of an ultrafine hole and the product quality are improved. The invention correspondingly discloses a method for machining the superfine hole through the graphite fine needle discharge, the surface roughness of the graphite electrode machined through a professional graphite milling cutter is small, and it is guaranteed that the machined superfine hole is high in size precision and smooth in surface.

The invention relates to a catalyst for producing isobutene by dehydrogenating isobutane, which takes VIB group elements in a periodic table of elements as main active components, at least one element in IIA group of the periodic table of elements as an alkaline assistant, at least one element in IVB group and VB group of the periodic table of elements as other assistants, and silicon-aluminum oxide as a carrier; wherein the carrier is treated by a hot solution containing group IIA elements in the periodic table of elements, and then is loaded with other components to obtain the dehydrogenation catalyst with the specific surface area of 100-300 m2/g and the average pore size of 2-20 nm. The catalyst obtained by the method can improve the activity and selectivity of the isobutane dehydrogenation catalyst prepared by the prior art, and can be used for industrial application of isobutane dehydrogenation.

The invention provides a machine oil separation and lubrication control system for a two-stroke pulse pump. The machine oil separation and lubrication control system comprises a CDI and pulse pump working controller, a liquid level sensor, a rotation speed sensor, an alarm module, a power supply module and a pulse pump, wherein, the liquid level sensor is connected with the CDI and pulse pump working controller, the alarm module is connected with the CDI and pulse pump working controller, the rotation speed sensor is connected with the CDI and pulse pump working controller, the power supply module is connected with the CDI and pulse pump working controller, and the pulse pump is connected with the CDI and pulse pump working controller. According to the pulse pump machine oil separation andlubrication operation principle in the machine oil separation and lubrication control system, the machine oil separation and lubrication control system of the two-stroke pulse pump is installed in anengine, after the engine is started, the CDI and pulse pump working controller collects information such as the rotation speed, liquid level, and power supply voltage of the engine, and after data are processed, pulse control signals are sent to control the operation of the pulse pump.