电动车（Q1-2）

电动车前灯（Q1-2）

Hydrogenation equipment and method

The invention provides hydrogenation equipment and a hydrogenation method. The hydrogenation equipment comprises a feeding system, a hydrogenation reactor, a catalyst module, a separation system and a cooling system, the hydrogenation reactor is a tubular reactor; the catalyst module is arranged in a tube of the tubular reactor; a shell pass inlet and a shell pass outlet are formed in the side wall of the hydrogenation reactor, are connected with the cooling system and are used for circularly cooling the hydrogenation reactor by adopting a cooling medium. The hydrogenation method comprises the following steps: allowing a hydrogenation medium and hydrogen to enter a hydrogenation reactor, carrying out a hydrogenation reaction under the action of a hydrogenation catalyst to generate a large amount of heat, removing heat through an inert metal heat-conducting material, carrying out circulating cooling on the hydrogenation reactor through a cooling system by using a cooling medium, and taking ...

Wheat starch preparation process

The present invention provides a wheat starch preparation process, and relates to the technical field of food processing, the wheat starch preparation process comprises the following steps: wheat flour raw materials are added into a mixing and stirring device, and warm water accounting for 80-85% of the wheat flour by mass is added; the method comprises the following steps: mixing wheat flour with warm water at a rotating speed of 50-70 revolutions per minute, stirring for 25-35 minutes, adjusting the pH value of the flour by adding a proper amount of calcium hydroxide during stirring so as to control the pH value to be 4.3-7.5, and decomposing non-starch polysaccharide in the production process by adding xylan hydrolase of different components; the wheat starch preparation process has the beneficial effects that by adding a proper amount of xylan hydrolase organic calcium hydroxide, non-starch polysaccharide in the wheat starch production process can be decomposed, and the separation effect ...

Rock mass instability acoustic emission precursor signal extraction method and instability precursor discrimination method

The invention discloses a rock mass instability acoustic emission precursor signal extraction method and an instability precursor discrimination method. The rock mass instability acoustic emission precursor signal extraction method comprises the following steps: S1, detecting and recording related parameters of a currently monitored rock mass acoustic emission signal in real time; s2, embedding the time sequence of the related parameters according to a preset window length to obtain a track matrix; s3, carrying out SVD decomposition on the track matrix to obtain a decomposed track matrix; s4, calculating the contribution rate of characteristic values in the decomposed track matrix, and arranging the characteristic values in a descending order to obtain the contribution rate of the characteristic values after arrangement; s5, extracting precursor feature values according to the kurtosis of the arranged feature value contribution rate and the mean value of the kurtosis to obtain a precursor ...

Catalytic rectifying tower plate, catalyst loading and unloading mechanism and catalytic rectifying tower

The invention discloses a catalytic rectifying tower plate, a catalyst loading and unloading mechanism and a catalytic rectifying tower. The plurality of catalytic reaction mechanisms are arranged on the tower plate at intervals, the catalytic reaction mechanisms are used for filling a catalyst, and the catalytic reaction mechanisms are provided with liquid passing structures; the plurality of gas-liquid mass transfer mechanisms are arranged on the tower plate at intervals and are positioned among the plurality of catalytic reaction mechanisms, and the gas-liquid mass transfer mechanisms are provided with injection structures; wherein a plurality of gas lifting structures and a plurality of liquid inlet structures are arranged on the tower plate, the plurality of gas lifting structures are used for enabling rising gas below the tower plate to enter the plurality of gas-liquid mass transfer mechanisms, and the plurality of liquid inlet structures are used for enabling liquid on the tower ...

Dehydrogenation system and method

The invention provides a dehydrogenation system and method. The dehydrogenation system comprises a vaporizer, a superheater, a mixer, a dehydrogenation reactor, a heat-conducting medium circulating unit and a separator, a tube pass inlet of the dehydrogenation reactor is sequentially connected to an outlet of the mixer, a shell pass outlet of the superheater and a shell pass outlet of the vaporizer, and a tube pass outlet of the dehydrogenation reactor is sequentially connected to tube pass inlets of the superheater and the vaporizer. And a shell pass inlet and a shell pass outlet of the dehydrogenation reactor are connected to the heat-conducting medium circulating unit. The dehydrogenation method comprises the following steps: vaporizing and overheating a dehydrogenation raw material, mixing with carrier gas, and reacting in a dehydrogenation reactor; heat is circularly supplied to the dehydrogenation reactor through the heat-conducting medium circulating unit; the material after dehydrogenation ...

Transportation container for industrial chemicals

The invention provides a transportation container for industrial chemicals. The transportation container comprises a moving structure, a collecting hopper, a lifting assembly, an overturning piece and a collecting structure. The moving structure drives the collecting hopper to move to the position beside chemical materials, the lifting assembly drives the collecting hopper to descend to make contact with the ground, the driving assembly drives the scraping plate to turn over to the vertical state, and the scraping plate transversely moves in the direction of the collecting hopper in the vertical state to scrape the chemicals on the ground to the collecting hopper. Then the driving assembly enables the scraping plate to turn over from the vertical state to the horizontal state, the scraping plate transversely moves in the direction away from the collecting hopper in the horizontal state to scrape the chemicals on the ground into the collecting hopper, the lifting assembly drives the collecting ...

Lithium iron phosphate battery positive electrode material and preparation method thereof

The invention discloses a lithium iron phosphate battery positive electrode material and a preparation method, the lithium iron phosphate battery positive electrode material comprises lithium iron phosphate and modified nano carbon black, and the weight ratio of the modified nano carbon black to the lithium iron phosphate is (0.1-5): 100; the modified nano carbon black is 3-oxo-5-polyethylene-7-methyl-8-trifluoroalkyl nano carbon black, the hydroxyl modified nano carbon black reacts with metal sodium to form sodium alkoxide, and the sodium alkoxide reacts with 1-halo-4-methyl-5-trifluoro-2-pentene to form alkyl nano carbon black containing vinyl. And then carrying out polymerization reaction, separation and purification to obtain the 3-oxo-5-polyethylene-7-methyl-8-trifluoroalkyl nano carbon black. The prepared modified nano carbon black forms a conductive network three-dimensional space for wrapping lithium iron phosphate, the property of the carbon black is changed under the action of ...

Water cooling tower

The invention provides a water cooling tower, and relates to the technical field of water cooling towers, the water cooling tower comprises a tower body, the top of the tower body is provided with an exhaust part used for exhausting water vapor in the tower body, the bottom of the tower body is provided with a through hole used for enabling air to enter the tower body and enabling cooling water in the tower body to be discharged, the tower body is provided with a water inlet, and the water inlet is communicated with the exhaust part. Two limiting ring pieces are arranged on the inner wall of the tower body, during use, high-temperature circulating water enters the position between the two limiting ring pieces from the water inlet and then enters the water spraying component to be sprayed out, meanwhile, the driving mechanism is started to drive the transmission rotating shaft to rotate, the transmission rotating shaft rotates to drive the water spraying component to rotate, the sprayed ...