1480 results about "Mix proportion" patented technology

The invention relates to an epoxy resin potting adhesive which consists of component A and component B. By weight portion, the component A consists of 90-130 portions of bisphenol A type epoxy resin, 240-320 portions of filling, 15-25 portions of thinner, 10-25 portions of toughener, 1-2.5 portions of defoamer and 0.8-2 portions of black pigment, and the component B consists of 60-130 portions of estolide and 1-3 portions of imidazole accelerator. The mixing proportion of the component A and the component B is (3-5):1. The invention also provides a preparation method of the epoxy resin potting adhesive. The epoxy resin potting adhesive provided by the invention has low cost and long resting period; after being mixed, the component A and the component B have low viscidity, good wetting quality, good heat resistance, good defoaming performance, good fluidity and long operating time and are solidified between 70 DEG C and 160 DEG C; a product after solidifying has bright surface, good mechanical performance and insulating performance and high glass transition temperature; and the quality of a potting component is stable.

The invention relates to a lightweight energy-saving insulating concrete, belonging to building materials. The invention comprises the master batches and accessories in accordance with the following parts by weight: master batches: 30-70 parts of cementing materials, 25-60 parts of fillers, 5-10 parts of strength activators, and accessories: 1-3 parts of waterproof agents, 2.0-3.0 parts of bleeding agents, 2.0-5.0 parts of suspending agents, 0.1-0.5 part of foam stabilizer, 38-60 parts of honeycomb agents, 0.5-1.5 parts of rusty retardant agents, 0.02-10 parts of reinforcing agents, 1.2-4.2 parts of early strength agents and expanding agents and 0.6-1.4 parts of acid and alkali resistant fibers. The concrete has the advantages of high early tensile and compressive strength, no decrease and crack of later strength and simple manufacturing process. According to the requirement of the building structure, the technical target of the concrete can be realized by regulating the mixing proportion. The concrete can be used for manufacturing various products at normal temperature and is widely applied to insulating and self-waterproof building engineering.

The invention discloses a traffic anti-rut asphalt modifier and a preparation method thereof; the asphalt modifier is prepared from the following components in parts by weight: 20 to 200 parts of thermoplastic elastomer, 5 to 450 parts of polyolefin, and 5 to 400 parts of rubber powder. Simultaneously, the invention also discloses modified asphalt which contains the asphalt modifier and application of the modified asphalt in asphalt mixture. The invention can significantly improve the high-temperature performance and the anti-rut capability of the asphalt mixture, improves anti-water damage and anti-low temperature cracking and other performance, and has high cost performance. Compared with asphalt modification, the invention does not need to add asphalt modification equipment, can significantly reduce energy consumption and loss in the production process, can realize long-termed inventory, prevents the problem of the poor storage stability of modified asphalt, does not affect the mixing proportion design, does not change the gradation of the asphalt mixture under any content, only finely adjusts the asphalt-aggregate ratio, has simple construction process, and realizes random adding through a direct feeding method.

The present invention belongs to the technical field of concrete construction and particularly relates to a design method for a mixing proportion of a self-compacting concrete mixture. The method comprises the steps of: determining a performance design target; determining mixing strength and a water-binder ratio; determining densest gradation (or a sand rate) of aggregates and void ratios of different packing states; determining the usage amount of binding materials and mixing water; determining the usage amount of the aggregates; determining the usage amount of additives; determining the actual adding amount of the mixing water; and the like. According to the method provided by the present invention, aimed at blindness of material selection during self-compacting concrete mixing proportion design in the prior art, based on a fundamental theory of particulate dense packing and a composition rule of reaching a densest packing state of solid particulate materials with different particulate diameters, a mixing proportion of different materials is determined by an actually measured densest packing state, and relationships are established between the material mixing proportions corresponding to different densest packing states and expected self-compacting performance grades of the mixture, so that the design method used for the mixing proportion of the self-compacting high-performance concrete mixture and based on a use performance as a target is constructed.

The invention relates to the technical field of concrete for building casting, specifically to self-compacting concrete and a design method of the mixing proportion of the concrete. The invention is characterized in that the self-compacting concrete is prepared by uniformly stirring the following raw materials in mixing proportion: 300-400kg / m<3> of cement, 70-150kg / m<3> of fly ash, 70-150kg / m<3> of mineral powder, 0-50kg / m<3> of silicon powder, 750-850kg / m<3> of sand, 850-1050kg / m<3> of stone, 4.4-28kg / m<3> of additive and 150-175kg / m<3> of water. Compared with the prior art, the self-compacting concrete disclosed by the invention has obviously improved flowing property, self-compacting property and durability of the concrete mixture, and is particularly applicable to the engineering structures limited by the construction operation space such as the structures with high casting quantity, large casting depth and height, complex shape, densely arranged reinforcing bars, thin walls, concrete-filled steel tubes and the like.

The invention provides a safe and reliable compound conditioner for reducing the heavy-metal mobility and bioavailability of soil or sludge compost and a preparation method thereof. The compound conditioner is a powdery compound prepared by adding heavy-metal auxiliary passivating agent to alkaline agent, wherein, the heavy-metal auxiliary passivating agent includes precipitating agent and absorbing agent; and the compound conditioner comprises the following components by the mixing proportion (weight percentage): 78% to 91% of alkaline agent, 5% to 13% of precipitating agent and 4% to 9% of absorbing agent. The preparation method comprises the following steps: (1) drying and pulverizing one, two or more than two substances among soda-manufacturing waste residue, lime and fly ash and sieving by a 60-mesh sieve to obtain an alkaline powdery substance as the alkaline agent; (2) mixing the alkaline agent, the precipitating agent and the absorbing agent by the above mixing proportion; and (3) drying and pulverizing the mixed products and sieving by a 200-mesh sieve to obtain the powdery compound conditioner. The invention can greatly reduce the environmental risk caused by the prior art and realize the sustainable development of green circular economy, industry and agriculture by recycling the industrial waste at the same time.

The invention relates to a method of designing a mixed ratio for a bitumen mixture based on fractal and distributional features of ore materials. The method comprises the following steps: (1) mathematical models for particle diameter distribution and mass distribution of the ore materials are set up respectively; (2) the type and the grading limit of the bitumen mixture are determined; (3) raw materials are selected and checked; (4) graduations of two arbitrary groups of the ore materials are determined and corresponding fractal dimension values(D) are worked out; (5) the use level of the bitumen is worked out; (6) the bitumen mixture is prepared by stirring; (7) a Marshall test sample is made, the relative density of the bulk volume of the test sample is determined, the theoretical maximum relative density is determined, and the volume index is worked out; (8) relationship curves between the fractal dimension values(D) and the volume indexes are drawn; (9) the graduation of the ore materials and the optimum use level of the bitumen are determined; (10) the road performance of the bitumen mixture is tested; and (11) the construction mixed ratio of the bitumen mixture is determined. The invention utilizes the fractal theory to set up the mathematical models, and in the process of designing the mixed ratio of the bitumen mixture, the optimum bitumen use level and the optimum graduation of the ore materials meeting and regulating all design rules of the bitumen mixture can be quickly determined.

The invention discloses a system and a method of dynamic management for construction quality of an asphalt concrete pavement. The system gathers a plurality of subsystems of the dynamic management for the construction quality of the asphalt concrete pavement and a remote quality monitoring and controlling system, wherein the subsystems are composed of a production mix proportion monitoring subsystem, a discharging temperature monitoring subsystem, a construction environment monitoring subsystem, a pave data monitoring subsystem, and a rolling data monitoring subsystem. The technical scheme is that the sensing technology based on the architecture of the Internet of Things and the transmission technology base on 2.5 G and 3G are fully utilized to report data information of a manufacturing process, a construction process, and the like of asphalt mixture to a remote server through a communicating module, so as to dynamically and truthfully reflect the construction quality condition. The idea of the system and the method is to track and observe project processes, and compare the observation result with a planned value, and once a deviation is found, the rectification is performed for prevention.

The invention provides a technology for processing tobacco stalk into shreds, and belongs to the technical field of tobacco processing. The technology disclosed by the invention has the following steps of: pretreating tobacco stalk, expanding the tobacco stalk with microwave, washing the tobacco with water, storing the tobacco stalk, straightening out the tobacco stalk, slicing the tobacco stalk, charging and storing stalk slices, shredding the stalk slices, drying and shaping the stalk shreds, and perfuming the stalk shreds and storing the stalk shreds. Equipment used in the technology is purchased from the market, wherein the equipment which is purchased from the market, adopts a low-frequency (915MHz) high-power (more than 10kW) microwave magnetron, and transports the tobacco stalk by a belt is improved into equipment which adopts an ultrahigh-frequency (2450MHz) single-pipe low-power (1.5kW) microwave magnetron, performs group control on the microwave magnetron and transports tobacco stalk by a drum. The technology has the characteristics that the tobacco stalk shreds are good in quality consistency and more similar to tobacco leaf shreds in the physical property, and have high sensory quality and filling value; and uniformity, stability and mixing proportion of the tobacco stalk shreds are improved when the tobacco stalk shreds are mixed with the tobacco leaf shreds, the quality of cigarette is improved, the application range and use ratio of the tobacco stalk shreds in the cigarette are improved, and the aims of tar reducing, harm reducing, cost reducing and efficacy enhancing are achieved.

The present invention is one kind of completely new concrete compounding process suitable for compounding various kinds of concrete, including high strength concrete and penetrative concrete. The present invention compounds concrete through optimizing the material proportion and size proportion of concrete without altering available concrete construction process and by means of the concrete theory of the present inventor. The compounded concrete has theoretic strength as high as 4.1466-5.4624 times the compression strength of the cement, and infinite theoretic service life similar to stone. The concrete compounding process is simple, practical, reliable, controllable in strength, low in cost and environment friendly.

The invention belongs to the fields of civil engineering and environmental material engineering, and in particular relates to geo-polymer recycled concrete and a preparation method thereof. The geo-polymer recycled concrete is prepared from raw materials of recycled coarse aggregate, recycled fine aggregate, fly ash, slag powder, water, sodium silicate, sodium hydrate, naphthalene sulfonate formaldehyde condensation compound and calcium saccharate according to certain mixing proportion by adopting a special stirring process. The product of the geo-polymer recycled concrete not only has simple preparation process, but also has good working performance, mechanical property, durability and heat-insulating property. Simultaneously, the geo-polymer recycled concrete and the preparation method can efficiently use a great deal of waste concrete and two industrial byproducts of the fly ash and blast furnace slag, are significant in saving resources, saving energy sources and protecting the environment, and accord with the sustainable development strategy of the building industry. The product of the geo-polymer recycled concrete can be widely applicable to road engineering, structural engineering and other various civil engineering constructions.

The invention relates an environmental protection laser transferred composite aluminum foil paper and the preparing technique, mainly solving the problems of the environment pollution and complicated technique caused by separant coating and laser layer protection coating of the existing commonly used solvent laser transferred composite aluminum foil paper. Its mixing proportion (by weight) of the raw materials is: water soluble amino resin 1-20 (or water soluble polyurethane resin 1-30, or water soluble alcohol acid resin 1-30, or water soluble acrylate resin 1-40, or cellulose resin 1-20), assistant 1-10, pigment 0-10, auxiliary solvent 1-30, and water 30-80, or their arbitrary combination, through synthesizing and wet-dispersing to mix into a water laser transfer coating, coating the transfer coating on a carrier thin film, drying, cross-linking curing, laser-mould pressing, and aluminizing to obtain the laser composite aluminum foil paper. It has the characters of improving environmental protection performance, simplifying producing process, saving energy sources, reducing production cost, stable production quality, etc.

The invention discloses an optimization method for determining the proportion of mixing light oil into heavy oil of an ultra-deep well and a light oil mixer thereof. The method comprises the steps of: 1) establishing a multi-phase flow comprehensive pressure drop calculation model and a correction model; 2) deriving a calculation method for the temperature gradient of a fluid in a shaft of a light oil mixing well; 3) performing the multi-phase flow calculation of bent well sections of the ultra-deep well, and calculating the distribution rule of parameters in a borehole shape; 4) establishing an analysis model of production performance of mixing the light oil into the heavy oil; and 5) optimizing the proportion and production parameters of mixing the light oil into the heavy oil. The method realizes the simulation and analysis to the production performance of mixing the light oil into the heavy oil of the ultra-deep well. The production performance of mixing the light oil into the heavy oil of the ultra-deep well are quantificationally analyzed and simulated and the distribution rule of parameters such as pressure, density and velocity along the shaft can be obtained. The method can optimize the proportion and the production parameters of mixing the light oil into the heavy oil according to the productivity of an oil well. The optimum light oil mixing proportion and mixing pressure are preferably selected. The method and the mixer have extremely strong industrial applicability.

The invention discloses a metal-gradient-material laser-shock-forging composite additive manufacturing method and device. The method includes: gradually spraying multi-metal mixed powder, which changes according a preset mixing proportion curve, according to a 3D printing filling scanning path, using a heat source to fuse the metal mixed powder to form the cladding layers of a workpiece, and using shock waves induced by pulse laser to impact and forge the cladding layers; stacking the cladding layers layer by layer, and forming the workpiece. The metal-gradient-material laser-shock-forging composite additive manufacturing method and device has the advantages that the cladding layer forming using the heat source to fuse the mixed metal powder and the cladding layer impacting and forging using the pulse laser are performed at the same time and are coordinated to manufacture a metal part, shaping and reinforcing are completed in one step in an efficient and high-quality manner, defects such as air pores, non-fusion and shrinkage cavities of the cladding layers are eliminated, and part internal quality is increased.

The invention relates to a vehicular compressed air foam fire-extinguishing system comprising a water supply device, a foam supply device, compressed air supply device, water-foam mixing liquor pipeline and foam jet device. The foam supply device comprises a electric plunger type foam pump, an automatic control module for water-foam mixing proportion, flow meter mounting on water-foam mixing liquor pipeline; the automatic control module for water-foam mixing proportion controls rotation speed of electric plunger type foam pump according to flow signal provided by the flow meter so as to control foam liquor flow; the foam jet device is used to eject water-foam-compressed air mixing liquid in water-foam mixing liquid pipeline. The invention has merits of accurate control for foam proportion, high automation degree, easy operation, improved fire-extinguishing efficiency; the invention can clean pipeline, cools power takeoff, water pump gear box lubricant and air compressor lubricant heat exchanger, pour water in tank and release residual water.

The invention discloses a lightweight concrete exterior wall insulation building block and a production method thereof. The lightweight concrete exterior wall insulation building block is prepared by mixing the following raw material components in proportion by weight: 20-50 of cement, 20-40 of fly ash, 8-20 of fine sand, 1-8 of calcareous material, 5-16 of plant filler, 0.2-0.5 of adjuvant, 8-15 of water and 0.3-0.7 of foaming agent. The production method of the lightweight concrete exterior wall insulation building block comprises the following steps of: forming raw material slurry by uniformly mixing production raw materials in mixing proportion; adding the water to the foaming agent, and generating uniform and stable bubbles by using a foaming device; mixing the bubbles with the raw material slurry so as to prepare bubble concrete slurry; and casting the bubble concrete slurry into a mold and curing. According to the lightweight concrete exterior wall insulation building block and the production method of the lightweight concrete exterior wall insulation building block, the plant filler, such as sawdust or crop straw powder, is mixed, so that the weight is reduced, the flexibility is improved, and the improvement on the strength of a finished product and the cracking prevention are favored; and the bubbles are enabled to be uniformly distributed in the raw material slurry by adding the foaming agent, so that not only is the weight of the building block reduced, but also the heat preservation and heat insulation effects are improved.

The invention discloses a wind-power class bi-component epoxy adhesive and a preparation method thereof. The epoxy adhesive is made from a main component A mainly consisting of epoxide resin and a filler and a curing agent component B and characterized in that the component A, according to percentage by weight, contains 50 percent to 68 percent of acrylic acid modified epoxide resin, 1 percent to 10 percent of high-property heat filler, 2 percent to 10 percent of epoxide diluter, 10 percent to 25 percent of thixotropic agent and 0.5 percent to 12.5 percent of additive, and the component B is divided into aliphatic amine, polyetheramine, alicyclic amine mixed-type general curing agent; and the mixing proportion of the component A and the component B is 100:30-100:50 according to portions by weight. The invention can improve exothermic peak temperature property during the curing reaction of epoxide resin adhesive and the toughness of the epoxy adhesive, thus being applicable to the cementation of large-scale composite material structural pieces, particularly meeting the requirements for low exothermic peak temperature in wind-power leaf pectization technology.

A gas storage canister for use in an automotive vehicle, includes a case having first and second end sections which are opposite to each other in a direction of flow of gas. The first end section has a gas inflow port and a gas outflow port. The second end section has an atmosphere-opened port. A gas adsorbing material is disposed inside the case. Additionally, a heat accumulative agent is provided including a phase changing material which causes absorption and release of latent heat to occur in accordance with a temperature variation. The heat accumulative material is mixed with the gas adsorbing material and disposed inside the case. Here, a mix proportion of the heat accumulative agent changes in the gas flow direction between the first and second end sections.

The invention discloses a traffic anti-rutting asphalt modifier and a preparation method thereof, and the asphalt modifier is prepared by the following component in parts by weight: 10-20 parts of polyolefin, 1-80 parts of rubber powder and 0.5-1 part of antioxidant. The invention simultaneously discloses modified asphalt containing the asphalt modifier and an application of the modified asphalt in asphalt mixture. The invention can significantly improve the high-temperature performance and the anti-rutting capacity of the asphalt mixture, improve the resistance to water damage, the resistance to low temperature cracking and other performances and have high performance-price ratio. Compared with asphalt modification, the invention does not need to add an asphalt modification device and can significantly reduce the energy consumption and the loss during the production process, realize the long-term storage, avoid the problem of poor storage stability of the modified asphalt, not affect the design of the mixing proportion, not change the graduation of the asphalt mixture under any content and only need to carry out micro-adjustment on the asphalt-aggregate ratio; the construction process is simple; and the direct input method can realize the addition at will.

The invention provides a method for controlling concrete precooling slump by monitoring current intensity of a stirrer. As for concrete at a certain mix proportion, if batch charge is the same, a slump value of the concrete is smaller, the concrete is thicker, the placeability of the concrete is poor, stirring resistance to a stirrer shaft is greater, the power consumed by the stirrer shaft is higher; on the contrary, the slump value of the concrete is larger, the placeability of the concrete is better, and the resistance to the stirrer shaft is smaller. A calculation formula of the power of the stirrer is that P is equal to U multiplied by I, wherein working current I is equal to P divided by V; voltage is invariable, and can be regarded as a constant; the power of the stirrer shaft varies with the current, and is proportional to the current, that is the slump value (SL) of the premixed concrete is inversely proportional to the current I when the stirrer shaft stirs the concrete; therefore, the concrete slump can be controlled by monitoring the current intensity of a motor of the stirrer; and the quality of the concrete is controlled finally. The method is simple and quick; the working strength of operators can be reduced effectively; the allocation of the operators can be reduced; a qualification rate of the concrete can be increased; and the production efficiency of the concrete can be improved.

The invention provides a dynamic regulating system of the mix proportion of a concrete mixing plant. The dynamic regulating system comprises a sensor measurement system, a signal transmitting system, a central control system and a data storage system. The system is used for detecting the aggregate water content on line via a water content sensor installed on the inner wall of a stock bin or below a material outlet, and transmitting the water content information collected automatically to the central control system of the concrete mixing plant in real time; concrete mix proportion parameters can be amended automatically by the system according to the operational rule of increasing the aggregate and reducing mixing water, and the amount of concrete aggregate blended materials and the amount of mixing water blended materials can be regulated simultaneously so as to guarantee the uniformity and stability of concrete quality; the whole dynamic regulation process can be completed within seconds without affecting the production efficiency, so that the system can be widely applied to the concrete mixing plant in the field of civil engineering, not only can improve the automation degree of the mixing plant and improve the production quality of concrete, but also can reduce the working intensity of operators and reduce the personnel configuration, thereby lowering the cost greatly.

The invention belongs to the technical field of roads and urban roads, and specifically relates to a mix proportion design method of an emulsified asphalt cold-patch mixture. The method is characterized by compaction and maintenance technologies of test pieces and determination of optimal total water content and optimal emulsified asphalt consumption. aiming at the special strength forming process of emulsified asphalt materials, different and special compaction methods and maintenance conditions are adopted for different stages of the mix proportion design, so that the optimal total water content and the optimal emulsified asphalt content can be determined, wherein the field actual conditions are simulated and the early damages of asphalt road surfaces are considered in the compaction methods and the maintenance conditions. After the optimal total water content and the optimal emulsified asphalt content are determined, the water stability and anti-stripping capability of the emulsified asphalt cold-patch mixture in the early stage of use are evaluated. The mix proportion design method of the emulsified asphalt cold-patch mixture is comprehensive in consideration and strong in practicability; and the emulsified asphalt cold-patch mixture obtained according to the method can obtain favorable pavement performance.

The invention relates to a water mixing valve comprising a valve body, a nozzle, a hot water regulating cavity, a water mixing cavity and a double-linkage valve, wherein the valve body is provided with a valve body cooling water inlet, a valve body hot water inlet and a valve body water outlet; the nozzle is communicated with the valve body cooling water inlet and provided with a nozzle cooling water inlet and a nozzle cooling water outlet; the valve body is internally provided with the hot water regulating cavity connected with the valve body hot water inlet and the water mixing cavity connected with the valve body water outlet; the water mixing cavity is connected with the hot water regulating cavity through a valve body hot water outlet positioned on one end of the hot water regulating cavity and is also connected with the nozzle through the nozzle cooling water outlet; and the double-linkage valve is arranged above the hot water regulating cavity and the water mixing cavity and used for controlling the water discharge of the hot water regulating cavity and the water mixing cavity. The water mixing valve can be used for more flexibly regulating the water mixing proportion of cold and hot water so as to ensure that the water mixing and discharging effects of the valve is better.

The invention discloses an asphalt mixture virtual performance test prediction method based on mesoscale simulation. The method comprises the steps of designing an initial mix proportion of an asphalt mixture, acquiring basic parameters of a material, carrying out a DSR test of asphalt mortar, carrying out a virtual creep test on the asphalt mortar, converting parameters in a virtual system, choosing multiple indoor tests needing to be predicted, constructing various three-dimension virtual test pieces, choosing a mechanic constitutive model of the material, choosing a loading condition of the virtual test, constructing a real-time monitoring system for test results, outputting final result prediction values of all the tests, comparing all indexes with standards to judge whether requirements are met, outputting suggesting to reselect a mix proportion if the requirements are not met, and outputting an optimal mix proportion if the requirements are met. According to the method, additional curves of the test results are monitored in real time, the obtained output results are compared to judge whether multiple performance indexes of the mixture to be predicted meet the standard requirements, unnecessary relative-property indoor tests are reduced, and test basis is provided for optimal design of the mix proportion of the asphalt mixture.

The invention relates to a boiler heat supply climate compensation system, which comprises a boiler, a main circulating water pump for water supply and return water circulation of the system, a water supply pipe which is connected with a water outlet of the boiler and a water return pipe which is connected with a water inlet of the boiler, and the boiler heat supply climate compensation system further comprises: an electric regulating valve for regulating the mixing proportion of discharge water of the return water of the system which flows into the boiler; a compensation control device for regulating the opening degree of the electric regulating valve according to the obtained outdoor meteorological parameters and leading the heat supply temperature measurement value to achieve the given heat supply temperature reference value; an auxiliary circulating water pump for pressurizing the outlet water of the boiler to be mixed with the return water of the system to enter the boiler; and a water inlet control device for controlling the working frequency of the auxiliary circulating water pump and leading the water inlet temperature and the flow rate of the boiler to achieve the minimum demand value. The invention further relates to a realization method of the boiler heat supply climate compensation. The technical proposal of the invention can ensure the requirements on the water inlet temperature and the minimum flow rate of the boiler at the same time of realizing the climate compensation, thereby achieving the purpose of saving energy and avoiding the potential danger of pipe explosion.

A method for recycling in place an asphalt mixture layer of a paved road continuously, while moving a self-propelled vehicle system, which comprises a step of heating and softening the asphalt mixture layer, a step of scraping and breaking said hot and softened asphalt mixture layer and keeping the softened mixture at a temperature sufficient not to form an aggregate, to prepare an asphalt mixture having a single-grained structure, a sieving step of classifying said asphalt mixture having a single-grained structure into a plurality of grain size groups, a step of designing mix proportions for converting said asphalt mixture to a recycled asphalt mixture by the use of said plurality of grain size groups classified, a step of mixing uniformly said recycled asphalt mixtures having designed mix proportions, and a step of spreading and compacting said recycled asphalt mixtures having been mixed uniformly, to thereby form a recycled asphalt mixtures layer.

The invention discloses a preparation method for a hydro-treating protecting agent. An alumina carrier in the method is prepared by kneading two kinds of different pseudo-boehmite dry colloid powder and loading an active metal, wherein the first pseudo-boehmite has relatively low crystallization degree and large pore volume and can provide pores with diameter of 30 to 100 nanometers; and the second pseudo-boehmite has relatively high crystallization degree and can provide pores of micron scale, the second pseudo-boehmite represents extremely hard blocks after drying due to high acidic index, and the crushed second pseudo-boehmite can completely pass through a 50-mesh sieve, so that the number of micro-scale pores can be increased, and the strength of the catalyst carrier can be improved. By adjusting the mixing proportion of the two kinds of pseudo-boehmite, the hydro-treating protecting agent with high strength, high stacking density, large pore volume and low abrasion rate can be prepared. The hydro-treating protecting agent is particularly suitable to be used as a heavy oil or residuum hydro-treating protecting agent.

A gas storage canister for use in an automotive vehicle, includes a case having first and second end sections which are opposite to each other in a direction of flow of gas. The first end section has a gas inflow port and a gas outflow port. The second end section has an atmosphere-opened port. A gas adsorbing material is disposed inside the case. Additionally, a heat accumulative agent is provided including a phase changing material which causes absorption and release of latent heat to occur in accordance with a temperature variation. The heat accumulative material is mixed with the gas adsorbing material and disposed inside the case. Here, a mix proportion of the heat accumulative agent changes in the gas flow direction between the first and second end sections.