32results about How to "No carbon deposits" patented technology

The invention discloses a tunnel pipe thin-layer retort for coal and oil shale and a retort process thereof, relates to a retort and a process for producing coal tar and shale oil, and solves the problems that the conventional retorts and processes have large heat loss at semicoke cooling sections, the retort time is difficultly controlled accurately, the oil yield is low and the treatment capacity of the single furnace is small. The retort comprises a drying section, a retort section, a high temperature cooling section and a low temperature cooling section, wherein the semicoke cooling section is divided into two sections by a roller feeding machine, heat exchange of cooling wind is carried out at the high temperature semicoke section, the low temperature cooling section is communicated with a tunnel pipe, and drying gas enters the drying section via the tunnel pipe. According to the process, retort oil gas led out from a retort oil gas outlet of a retort furnace is purified and then used as circulation retort gas, and gas led out from a drying gas outlet of the retort furnace is used as the circulation drying gas to carry out retort. With the retort and the retort process, an addition of 20 percent of semicoke residual heat is recovered from per ton raw material, the retort time is accurately controlled, the oil yield is high, and the treatment amount of the single furnace is large; and the retort and the retort process are mainly applied to the field of coal chemical industry.

The invention relates to the field of preparation of biologic oil, and provides a furfural catalytic hydrogenation method under supercritical carbon dioxide and a method for preparing catalysts. The furfural catalytic hydrogenation method under supercritical carbon dioxide comprises the steps that furfural and palladium and carbon catalysts are added to a reaction still, then the reaction still is sealed, hydrogen is introduced into the reaction still to remove the air in the reaction still, liquefied carbon dioxide is injected into the sealed reaction still through a plunger metering pump, the pressure of the carbon dioxide is made to be above the critical pressure when the carbon dioxide is in an overcritical state, furfural catalytic hydrogenation and upgrading are carried out under the overcritical condition of the carbon dioxide, and a needed liquid product is prepared. The method for preparing the palladium and carbon catalysts comprises the steps of pre-processing of a carrier and preparation of the palladium and carbon catalysts (Pd / C catalysts). In the reaction process, the catalysts have no carbon accumulation phenomenon, can be recycled, largely reduce generation of by-products, and improve the selectivity of the products.

The invention relates to vehicle fuel containing methanol. The vehicle fuel comprises the following components by volume: 5-95% of methanol and 0.3-10.2% of additive or 5-95% of methanol, 0.1-90% of gasoline and 0.3-10.2% of additive. The vehicle fuel has high octane value, is economical and energy-saving, can reduce emission of gas pollutants and can relatively prolong the service lives of the vehicles even if the content of methanol is higher. Besides, the vehicle fuel overcomes the following common defects of the vehicles using the methanol gasoline: the engine has difficulty in cold start and is easy to corrode and swell; and the fuel is unstable and easy to layer in the case of long-term storage.

The invention discloses a pre-discharging control system for a whole vehicle, which comprises a pre-discharging control module, wherein the pre-discharging control module is marked with first time and second time; the second time is longer than the first time; if a pre-discharging request signal is received by the pre-discharging control module, an oil pre-pumping signal is outputted to an oil pump, the oil pump is controlled to start pre-pumping oil while outputting an oil pre-injecting signal to an oil injector, and the oil injector is controlled to open; after the outputting of the oil pre-injecting signal is lasted for the first time, the operation of outputting the oil pre-injecting signal to the oil injector is stopped and the oil injector is controlled to close; and after the outputting of the oil pre-pumping signal is lasted for the second time, the operation of outputting the oil pre-pumping signal to the oil pump is stopped and the oil pump is controlled to stop pre-pumping oil. By adopting the pre-discharging control system for the whole vehicle provided by the invention, air can be expelled from a fuel oil pipeline of a new vehicle so as to cause the fuel oil pressure to be the specified pressure, one-step successful starting and fuel oil consumption of the new vehicle are ensured and the carbon deposition of a spark plug is reduced.

The invention relates to the technical field of internal combustion engine accessory manufacturing, in particular to a piston of an energy-saving environment-friendly mounting clearance pairing piston ring. The piston of the energy-saving environment-friendly mounting clearance pairing piston ring comprises a piston body, a first gas ring and a second gas ring, wherein the first gas ring and the second gas ring are installed on the piston body, one end of an opening of a ring body of each gas ring serves as an extending portion, the other end of the opening of the ring body of each gas ring serves as a lap-joint portion, each lap-joint portion corresponds to each extending portion in length, when lap joint is carried out on each lap-joint portion and each extending portion in a vertical mode to enable the ring body of each gas ring to form the whole circle, a gap which cannot expand along with increase of the abrasion loss of each gas ring is formed between the slope of each extending portion and the slope of each lap-joint portion, a fixed matched proportion is arranged between the gap formed between the slopes at the position of the lap joint of the opening of the first gas ring and the gap formed between the slopes at the position of the lap joint of the opening of the second gas ring, and the value of the fixed matched proportion is 0.035mm-0.18mm to 0.02mm-0.12mm. The piston of the energy-saving environment-friendly mounting clearance pairing piston ring can greatly improve the sealing performance and the compression pressure of an air cylinder, fuel oil can carry out sufficient combustion, the phenomenon of carbon deposit can never happen, consumption of the fuel oil and consumption of engine oil are reduced, pollution emission is reduced, and various mechanical property indexes and various economic indexes of an internal combustion engine are greatly improved.

The invention discloses a method and a device for producing synthesis gas by plasma catalytic methane dry reforming, and belongs to the technical field of methane and carbon dioxide reforming. The method includes: reacting carbon dioxide and methane under the coupled action of low-temperature plasma and a catalyst to generate synthesis gas mainly composed of carbon monoxide and hydrogen. This process can carry out reforming of methane and carbon dioxide at a lower reaction temperature and lower reaction pressure, reducing energy consumption of the device; supplementing the heat of the reaction unit through the heating furnace, it is easier to control the reaction depth and the conversion rate of raw materials, Does not produce a large amount of carbon deposits, thus prolonging the life of the catalyst. The device used includes a raw material gas distribution unit and a reaction unit. The gas outlet of the raw material gas distribution unit is connected to the inlet of the reaction unit. An ionization chamber is formed between the two electrodes in the reaction unit, and an insulating medium is arranged in the ionization chamber. The heating furnace is surrounded by the ground electrode, and the two electrodes are used for electrical connection with the low-temperature plasma power supply.

The invention discloses a basic oxide modified boron nitride catalyst and its preparation method and application. The catalyst is composed of basic oxide and boron nitride. The preparation method of the catalyst is as follows: adding boric acid and urea to a mixed solution composed of methanol and water to crystallize the original boron nitride material; then, adding an alkaline oxide precursor salt by impregnation, and then roasting in air A basic oxide-modified boron nitride catalyst is prepared. The obtained catalyst is heated and activated by feeding inert gas and oxygen-containing gas; finally feeding methane and oxygen to catalyze the selective oxidation of methane to produce formaldehyde and methanol. The method provided by the present invention belongs to the first time that basic oxide is added to boron nitride material as an auxiliary agent as a catalyst for the direct oxidation of methane to produce carbon-platform molecules such as formaldehyde and methanol, and has high catalytic efficiency and selectivity , has great potential for industrial application.

The intelligent control application of a kind of electric motor of the present invention, comprises single-chip microcomputer, and the driver and the pressure sensor that are connected with single-chip microcomputer respectively weakly, and the motor that is electrically connected with driver, and the pump head that is connected with motor drive, and described pump head The sensor is connected to a pressure sensor; the driver is externally connected with a high-current load wire; the motor is externally connected with a high-current load wire, and the driver is connected to the motor with a high-current load wire. The invention realizes the control signal of the micro-current to control the high-power motor load of the electronic device without mechanical loss, which can greatly prolong the service life of the electrical product, and solve the problem of excessive load current directly controlled by the sensor or control switch in the past. The control switch is damaged or the life is shortened. Long-term work will not produce carbon deposition, which is safe and reliable.

The invention discloses a quenching furnace with a methanol gasifying device, comprising the quenching furnace which is interlay horizontally provided with a mesh belt for conveying workpieces. The quenching furnace is characterized by also comprising the methanol gasifying device; a plurality of pipelines communicated with the quenching furnace are arranged on the top of the quenching furnace; the air inlets of the pipelines are communicated and connected with the methanol gasifying device; in the quenching furnace, fans are arranged beside the air outlets of the pipelines; a main control chamber of the quenching furnace is provided with a CP value display device; and the CP value display device is connected with an oxygen-carbon head. The invention solves the problems of incomplete gasification and decomposition of liquid methanol in the quenching furnace, damage of a furnace body and the workpieces and environment pollution in the prior art and provides the quenching furnace with the methanol gasifying device, thereby enabling the methanol to be gasified and cracked in the methanol gasifying device; and in addition, the invention can well control the flow of gasified methanol, thereby enabling a methanol gas to be uniformly distributed.