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The invention discloses a method for removing thiophene sulfur in fuel oil by using Ag2O/SiO2 composite aerogel as an adsorbent, and belongs to the technical field of fuel oil processing. The method comprises the following steps: by taking tetramethyl orthosilicate, tetraethoxysilane, silica sol, sodium silicate and the like as silicon sources, and silver acetate, silver nitrate and the like as silver sources, preparing the Ag2O/SiO2 composite aerogel by adopting a sol gel-normal-pressure preparing drying method; quantitatively filling the aerogel into a fixed bed adsorption device, injecting model gasoline containing thiophene sulfur at certain temperature and air speed, collecting adsorbed model gasoline at the outlet in the lower end of a reaction device, and performing chromatographic analysis. The result shows that the Ag2O/SiO2 composite aerogel has a good adsorption property on thiophene sulfur. The Ag2O/SiO2 composite aerogel is simple in preparation method, low in cost, high in economic benefit, good in environment-friendliness, gentle in adsorption conditions and low in requirement on adsorption equipment, and can be repeatedly used.

The invention relates to a method for removing thiophene sulfides in fuel oil by taking SiO2-APTES hybrid aerogel as an adsorbent, and belongs to the technical field of fuel oil processing. Accordingto the method, methyl orthosilicate, tetraethoxysilane, silica sol, water glass and the like are taken as silicon sources, (3-aminopropyl)triethoxysilane and (3-aminopropyl)trimethoxysiloxane are taken as ammonia sources, the SiO2-APTES hybrid aerogel is prepared by a sol-gel atmospheric pressure drying method; a fixed bed adsorption device is filled with the SiO2-APTES hybrid aerogel, simulated gasoline containing the thiophene sulfides is injected at a certain temperature and airspeed, and the adsorbed simulated gasoline is collected for chromatographic analysis; results show that the SiO2-APTES hybrid aerogel has good adsorption property for the thiophene sulfides. The preparation method of the SiO2-APTES hybrid aerogel adsorbent is simple, and low in cost; the adsorbent can be repeatedly used, has high economic benefit, is environmentally friendly, has mild adsorption conditions and has low requirements on adsorption equipment.

The invention discloses a method of removing thiophene sulfides in fuel oil by taking an Ag2O/SiO2-ZrO2 compound aerogel as an adsorbent. The method comprises the following steps: filling a fixed bedadsorption device with the Ag2O/SiO2-ZrO2 compound aerogel as the adsorbent; introducing simulated gasoline containing thiophene sulfur at an air speed of 1-10h<-1> at 0-100 DEG C; and adsorbing the simulated gasoline to obtain simulated gasoline, the sulfur concentration of which is smaller than 1ppm. According to the Ag2O/SiO2-ZrO2 compound aerogel, Zr<4+> is introduced in a silicon framework structure of the aerogel to generate an acid L, lone pair electrons on an S atom of the thiophene compound are alkaline, the thiophene sulfides can be adsorbed to the centre of the acid L of the aerogelmatrix Ag2O/SiO2-ZrO2 through acid and alkali action, and the adsorption property of the aerogel on the thiophene sulfides can be further improved by means of pi complexation and acid and alkali action. The adsorption reaction is carried out at a constant pressure, the adsorption conditions are mild, the demand on adsorption equipment is low, and the method is convenient to operate. A good adsorption effect on the thiophene compounds is obtained.

The invention discloses a method for removing thiophenes sulfur in fuel oil by using SiO2/Cu2O composite aerogel as an adsorbent, and belongs to the technical field of fuel oil processing. The method is characterized by taking tetraethoxysilane as a silicon source and copper acetate as a copper source, and preparing the SiO2/Cu2O composite aerogel by adopting a sol gelation-ambient pressure drying method; then filling a stationary bed adsorption device with the SiO2/Cu2O composite aerogel; injecting simulated gasoline under certain temperature and certain flow. The simulated gasoline after being adsorbed can be collected at an outlet formed in the lower end of a reaction device, gas chromatography can be carried out, and a result shows that the SiO2/Cu2O composite aerogel has good adsorption performance on both thiophene and benzothiophene. A preparation method of a SiO2/Cu2O composite aerogel absorbent in the invention is simple, the cost is low, the SiO2/Cu2O composite aerogel absorbent can be repeatedly used for many times, and the economic benefit is high; adsorption conditions are gentle, and requirements on an adsorption device are low.

The invention discloses a method for removing thiophene sulfur in fuel oil and belongs to the technical field of fuel oil processing. The method comprises the following steps: using tetramethyl orthosilicate, tetraethyl orthosilicate, silica sol, water glass or the like as a silicon source; using silver acetate, silver nitrate or the like as a silver source; using aluminum nitrate, aluminum acetate or aluminum oxalate as an aluminum source; preparing an Ag2O/SiO2-Al2O3 composite aerogel with a sol-gel-atmospheric pressure drying method; quantitatively filling in a fixed bed adsorption device;injecting a simulated gasoline containing thiophene sulfur at a certain temperature and space velocity; and collecting the adsorbed simulated gasoline at a lower outlet of a reaction device for chromatographic analysis. Results show that the Ag2O/SiO2-Al2O3 composite aerogel has good adsorption performance for thiophene sulfur; an Ag2O/SiO2-Al2O3 composite aerogel adsorbent in the invention is simple in preparation method, low in cost, capable of being repeatedly used, high in economic efficiency, environmentally friendly, mild in adsorption condition and low in requirement on adsorption equipment.

The invention discloses a battery replacing system and a battery replacing station comprising the same. The battery replacing system comprises a vehicle carrying platform, first battery replacing equipment and second battery replacing equipment, the vehicle carrying platform is provided with a first working face used for bearing an electric vehicle. The vehicle carrying platform is provided with asecond working surface for the first battery replacing equipment and the second battery replacing equipment to run; wherein the second working face is lower than the plane where the first working face is located, the first battery replacing device and the second battery replacing device run on the second working face and alternately enter and exit from the battery replacing position in the secondworking face, and the first battery replacing device and the second battery replacing device disassemble or assemble a battery on the electric vehicle at the battery replacing position. According tothe system, the second working surface and the first working surface are positioned on different planes, so that the first battery replacing equipment and the second battery replacing equipment loadedwith batteries can enter or leave the bottom of the electric vehicle without hindrance. The first battery replacing device and the second battery replacing device which operate alternately shorten the battery replacing time and improve the battery replacing efficiency.

On an energy guiding chain for guiding hoses, cables and the like, where the upper strand rests on the lower strand and rollers ( 5, 6 ) are provided on at least some chain links of the upper strand and/or the lower strand, which can roll on running surfaces ( 9, 10 ) provided on the chain links of the opposite strand and which, on their running surface, display a number of spaced peripheral guide grooves that can be engaged by the crests ( 13, 14 ) of the rollers of the opposite strand, it is envisaged, in order to facilitate traversing of the chain, that the running surfaces display spaced longitudinal slits that allow the crests of the roller profile to pass through, where the webs ( 17, 18 ) between the longitudinal slits cover the guide grooves on the side facing the other strand, such that the crests of the rollers of the other strand can roll on the webs.

The invention relates to the field of mechanical safety protection, in particular to an anti-falling safety mechanism. The anti-falling safety mechanism comprises an anti-falling device body and a connecting mechanism, wherein the anti-falling device body is connected with the connecting mechanism, the connecting mechanism is connected with an external fixing base, the anti-falling device body comprises a ball screw, the ball screw is fixed in an outer sleeve, the outer sleeve is arranged outside the inner sleeve in a sleeve mode, a ball nut is arranged on the inner sleeve, the ball nut is screwed into the ball screw, and the ball nut is provided with a mechanical braking device for braking rotary action of the ball nut after providing static friction force. Due to adoption of the technical scheme, the mechanism is applied to occasions with potential falling hidden danger of equipment machinery, and can play an effective buffering role when the mechanical equipment generates huge gravitational acceleration due to faults, so that the protection on mechanical parts is achieved.

The invention relates to a method for removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel and belongs to the technical field of fuel oil processing. The methodis characterized in that the Ag2O/SiO2-Al2O3-graphene oxide composite aerogel is prepared by taking silicon orthosilicate, tetraethyl orthosilicate, silica sol, water glass and the like as silicon sources, taking silver acetate, silver nitrate and the like as silver sources and taking aluminum nitrate, aluminum acetate and aluminum oxalate as aluminum sources and adopting a sol-gel and atmosphericpressure drying method. The Ag2O/SiO2-Al2O3-graphene oxide composite aerogel is quantitatively packed in a fixed bed adsorption device, simulated gasoline containing the thiophene sulfur is injectedat a certain temperature and airspeed, and the simulated gasoline after absorption is collected at an outlet in the lower end of a reaction device for chromatographic analysis. Results show that the Ag2O/SiO2-Al2O3-graphene oxide composite aerogel has good adsorption properties for the thiophene sulfur. The Ag2O/SiO2-Al2O3-graphene oxide composite aerogel absorbent in the method provided by the invention is simple in preparation method, low in cost, capable of reuse for many times, high in economic benefits, environmentally friendly, mild in absorption conditions and low in requirements for absorption equipment.

The invention discloses a novel tangent brick for the ingate of a cast steel pouring system. The tangent brick comprises a brick body; and a pouring channel is provided in the brick body and consists of an inclined section and a vertical section, wherein the vertical section and the inclined section smoothly transit and are communicated with each other and the inclined section and the vertical section form an included angle of 135 degrees. According to the invention, it is guaranteed that molten steel stationarily and smoothly enters into the ingate from a horizontal runner, which enables the problem that impurities enter into the molten steel because the molten steel has eroded the ingate tangent brick to be avoided; and the unique design of the pouring channel ensures that the molten steel enters into a mold cavity from the gate of the ingate along a tangential direction, which enables damage of a mold under the impact of the molten steel to be avoided, the purpose of no change of components before and after pouring of the molten steel to be achieved and cast quality to be improved.

The invention relates to a device (1) for cleaning a continuously circulating fabric (2) in a paper machine for producing and/or processing a paper, cardboard, tissue or other fiber web, comprising at least one cleaning nozzle (3, 3.1), which generates at least one cleaning jet (4) from a fluid, said jet being directed towards the fabric (2), and comprising a discharge channel (5) for discharging the fluid and the dirt released from the fabric (2) by the cleaning jet (4) in a discharge direction (8). The discharge channel (5) has a first section (5.1) with a receiving opening (6) at the beginning of the discharge channel (5), said first section (5.1) of the discharge channel (5) having a cleaning opening (12) which faces the circulating fabric (2) and forms a cleaning zone (13), and the at least one cleaning nozzle (3, 3.1) is arranged such that the at least one cleaning jet (4) strikes the fabric (2) in the region of the cleaning zone (13). The device (1) according to the invention is characterized in that the receiving opening (6) is oriented opposite the running direction (9) of the circulating fabric (2) and in that the at least one cleaning nozzle (3, 3.1) is arranged such that the at least one cleaning jet (4) has a speed component in a transverse direction (9.1), thus transversely to the running direction (9) of the fabric (2), and strikes the fabric (2) in an angular range of 20 degrees < B < 80 degrees, in particular in an angular range of 30 degrees<B<70 degrees, with respect to the fabric plane (2.1) when viewed in the running direction (9) of the fabric.

The invention discloses a method of removing thiophene sulfides in fuel oil by adsorption of composite of Cu2O/SiO2-Al2O3-GO and aerogel. Composite of Cu2O/SiO2-Al2O3-graphene oxide and aerogel is used as an adsorbent herein to fill a fixed-bed adsorbing device; simulation gasoline with thiophene sulfides is introduced under 0-100 DEG C at the air velocity of 1-10 h<-1>; simulation gasoline with asulfur concentration of 1 ppm and below is attained by adsorption. The composite of Cu2O/SiO2-Al2O3-graphene oxide and aerogel is utilized herein; Al3+ is introduced in aerogel silicon framework structure to generate L acid; lone-pair electrons on S atoms of the thiophene sulfides are of basicity, and the center of the L acid in aerogel substrate SiO2-Al2O3 can adsorb the thiophene compounds under acidic and basic action; synergy of pi complexing action and acidic-basic action helps further improve the adsorption of thiophene compounds; adsorbing effect is improved, and the sulfur concentration of the thiophene sulfides in the simulation gasoline may reach 1 ppm and below.

The device comprises a box body, turnover doors are hinged to the front face and the back face of the box body through hinges, a supporting plate is fixedly connected to the top of the left side of the box body, and a placing plate is transversely and fixedly connected into the box body; circular grooves are formed in the periphery of the top of the placing plate and the periphery of the bottom of an inner cavity of the box body, planting pots capable of planting lilies are clamped in the circular grooves, fixing rings are fixedly connected to the planting pots, and limiting mechanisms capable of rapidly fixing the planting pots are arranged at the top of the placing plate and the bottom of the inner cavity of the box body. According to the lily planting device, by means of the limiting mechanism and the auxiliary mechanism, double fixation of the planting pots and the lily stems is facilitated, and the stability of the planting pots and the lily stems is improved; and the problems that the planting pot is easy to topple and the lily stems are easy to break due to excessive shaking in the moving and transporting process of the lily potted plant are avoided.

The invention relates to a console element for insertion into a motor vehicle, comprising a front region, a middle region and a rear region, the front region, the middle region and the rear region being arranged one behind the other when viewed in the longitudinal direction of the console element, and comprising a support element which is mounted displaceably in the direction of a substantially horizontal orientation and which can assume a use position, wherein, in the use position, the support element covers at least a part of the loading space arranged in the middle region, which is characterized in that the support element can be moved from the use position in the direction of the front region in such a way that it occupies the loading position and releases the loading space arranged inthe middle region.

The invention discloses a preparation method and application of SiO2-APTES-La composite aerogel, and belongs to the technical field of fuel oil processing. The preparation method comprises the steps of mixing absolute ethyl alcohol, tetraethoxysilane and deionized water to obtain a solution A, carrying out magnetic stirring hydrolysis under acidic conditions, adding ammonia water to adjust the pHvalue, slowly adding APTES, standing to obtain a gel, aging, crushing, carrying out solvent replacement to dissolve lanthanum nitrate in absolute ethyl alcohol to obtain a solution B, standing the mixed solution A and the mixed solution B, and drying the mixed solution A and the mixed solution B under normal pressure to obtain the SiO2-APTES-La composite aerogel. According to the invention, a fixed bed adsorption device is quantitatively filled with the SiO2-APTES-La composite aerogel, thiophenic sulfide-containing simulated gasoline is injected at normal temperature and a certain airspeed, the adsorbed simulated gasoline is collected at an outlet at the lower end of a reaction device, and chromatographic analysis is carried out. The preparation method of the SiO2-APTES-La composite aerogel adsorbent is simple, the cost is low, the adsorbent can be repeatedly used, the economic benefit is high, the environment-friendly effect is achieved, the adsorption condition is mild, and the requirement for adsorption equipment is low.