82results about How to "Low cost and environmentally friendly" patented technology

The invention discloses a method for preparing a phosphorus modified ZSM-5 molecular sieve with hierarchical pores. The method includes steps: well mixing an aluminum source, alkali, an organic template agent and deionized water, adding a silicon source and a boron source, crystallizing obtained mixed sol, recovering a crystallized product, an removing the template agent to obtain a NaZSM-5 molecular sieve; performing ammonium ion exchange to remove Na ions, subjecting obtained NH4-ZSM-5 molecular sieve to steam treatment to obtain a boron removed molecular sieve; impregnating in phosphorus compound solution, drying and calcining to obtain the phosphorus modified ZSM-5 molecular sieve with the hierarchical pores. The method has advantages that the ZSM-5 molecular sieve prepared according to the method serves as a cracking catalyst auxiliary agent to solve problems of low catalyst cracking activity and low carbon olefin yield in an existing catalytic cracking FCC unit, high-selectivitypropylene is obtained, and product composition is improved; in addition, the method is simple in operating step, low in equipment requirement, low in cost, environmentally friendly and promising in application prospect.

The invention provides a high-thermal-conductivity aluminum alloy and a preparation method thereof. A die-cast aluminum-silicon-magnesium-iron-manganese alloy material prepared by adopting a die-casting technology and an aging treatment process comprises the following components of, by mass, 5-10% of silicon, 0.5-1% of iron, 0.1-0.60% of magnesium, 0.10-0.40% of manganese, less than or equal to 0.5% of zinc, less than or equal to 0.4% of copper, less than or equal to 0.30% of other elements and the balance aluminum and inevitable trace impurities. According to the high-thermal-conductivity aluminum alloy, the relatively high heat conduction performance, the good mechanical property and the good die-cast forming performance are achieved, cost of the raw material is low, and the source is convenient to obtain; and the high-thermal-conductivity aluminum alloy is particularly suitable for manufacturing parts with light weight and high heat conduction requirements, and has very wide application prospects in the fields of communication, household appliances and the like.

The invention relates to a method using the crop straw to produce the disposable choptsicks and the disposable choptsicks thereof. The producing method of disposable choptsicks includes the following steps: a) providing the straw material; b) compressing and extruding the water and the sugar on the straw material to make the material shaped into the chopsticks cog; and c) heating the chopsticks cog to make the sugar charring to form into the moulding choptsicks. The advantages of the invention lie in: simple production process, low cost and environment protection.

The invention provides hydrophobic under-coating paint applied to a poor-polarity polyolefin film. The under-coating paint is prepared from the following components in parts by weight: 30-50 parts of soft monomers, 50-70 parts of hard monomers, 5-30 parts of vinyl monomers, vinyl monomer synthetic resin, vinyl monomer synthetic emulsion or polyethyleneimine, 1-10 parts of acidic functional monomers, 1-10 parts of cross-linking monomers, 2-6 parts of a reaction type emulsifying agent, 0.5-2 parts of an initiating agent, 0.1-1 part of lauryl mercaptan, 0.5-2 parts of an antifoaming agent, 0.5-2 parts of a wetting agent and 140-160 parts of deionized water by an emulsion polymerization method, wherein the vinyl monomers are vinyl acetate, vinyl ester of tertary carboxylic acids, butadiene, isoprene, vinyl chloride or vinylidene chloride, the vinyl monomer synthetic resin is chlorinated polyolefin resin, and the vinyl monomer polymerization emulsion is an EVA emulsion. The under-coating paint disclosed by the invention is low in cost, has favorable adhesive force to the polyolefin films, and can provide favorable ink-printing adaptability. The invention further provides a preparation method of the under-coating paint.

The invention discloses a preparation method of a phosphorus-containing multilevel porous ZSM-5 / Y composite molecular sieve. The preparation method comprises the following steps: mixing alkali, an organic template and deionized water to form a solution; adding a NaY molecular sieve and adding a silicon source and a boron source to obtain a mixed sol, crystallizing, recovering a crystallized product and then removing the template to obtain a NaZSM-5 / Y composite molecular sieve; then performing ammonium exchange in an ammonium salt solution to remove a Na ion to obtain a NH4-ZSM-5 / Y composite molecular sieve; and removing a boron element in a skeleton, and impregnating with a phosphide to obtain the phosphorus-containing multilevel porous ZSM-5 / Y composite molecular sieve. The preparation method has the beneficial effects that the preparation method is simple to operate, low in cost and environmentally friendly; the composite molecular sieve has different silica-alumina ratios and is ofa microporous and mesoporous structure; the composite molecular sieve is used as a catalyst, so that the technical problems that an existing fluid catalyst cracking (FCC) unit has the disadvantages that the catalyst cracking activity is low and the low-carbon olefin yield is low can be solved, high-selectivity propylene is effectively obtained, and the product composition of the catalytic crackingtechnical unit is improved.

The invention relates to curcumin table vinegar and a preparation method thereof and belongs to the technical field of food, seasonings and preparation thereof. According to the invention, curcumin, edible acetic acid, acetic acid and table vinegar are used as raw materials, and curcumin is dissolved in the table vinegar through four ways to obtain curcumin table vinegar. The curcumin table vinegar prepared by the technical scheme of the invention has the vinegar flavor of table vinegar and soft taste as well as the specific pleasant turmeric taste and healthcare function of curcumin; the preparation method is simple and convenient to operate; the raw materials are widely available and environmentally-friendly at low cost; the product stability is good; and large-scale industrial production is facilitated. Moreover, according to the method, the content of curcumin in table vinegar is adjusted by controlling the content of curcumin in the edible acetic acid, acetic acid and table vinegar and the content of curcumin in the added table vinegar, and the method is suitable for preparing the natural medicine active ingredients of other curcumin and derivatives thereof and the like.

The invention discloses a sterilization fresh light of pulsed light, which comprises a luminous body; both ends of the luminous body are provided with protection covers and electrodes; the two electrodes extend into the luminous body, and are respectively connected with two pulse output ends of a controller capable of producing pulse high voltage through leads; and the controller is provided with a power input end, and the luminous body is filled with inert gas. The sterilization fresh light of pulsed light has the advantages of lower cost, environment protection, continuous use and maintenance and good sterilization effect, and plays very good roles in promoting the growth and keeping the freshness of growing and picked fresh fruits and vegetables.

The invention relates to a preparation technique of pressed activated carbon and a method used for manufacturing an activated carbon slab and an activated charcoal column (a square column and a cylinder). The preparation technique of the pressed activated carbon comprises: carbonaceous raw materials are put into a carbonization furnace and heated to 950 DEG C; then water is added to carry out spraying and form high pressure water vapor; shells are cooled to natural temperature after carbonization and taken out of the furnace to be put into a ball mill and processed into about 200 meshes, mixed and evenly stirred with binding agent in a proportion of 1:1, and the mixture is put into a baking furnace with a temperature of 145 DEG C for 45 minutes, and the pressed activated carbon is obtained. The manufacturing technique of the invention employs processing leftover bits and pieces such as shells, bamboo, etc., as major raw materials, which saves cost and achieves environmental effect at the same time.

The invention relates to a leather sheet glue coating device, and aims at providing the leather sheet glue coating device which is high in production efficiency and simple in structure. The leather sheet glue coating device comprises at least one drying box, at least one glue coating machine and a transmission device, wherein the number of the drying boxes is the same as that of the glue coating machines; the glue coating machines and the drying boxes are distributed from front to back in a staggered manner; each glue coating machine comprises a machine body, a machine head positioned above the transmission device, a connection piece and a locking device; the machine body is positioned on one side of the transmission device. The leather sheet glue coating device is simple in structure; the workload of a worker can be alleviated; the technical content is low; the leather sheet glue coating device is easy to operate and learn; the production efficiency can be effectively improved; meanwhile, the leather sheet glue coating device is low in cost and environmentally friendly.

The invention discloses a method and a device for extracting cinnamaldehyde-rich composition from cinnamon leaves, and relates to the technical field of chemical extraction. The method comprises the following steps: washing, drying and crushing cinnamon leaves into fragments; pouring the cinnamon leaf fragments into the SPE extraction tank of a subcritical propane fluid extraction device, and carrying out subcritical propane fluid extraction; introducing the extracted fluid into an SPE separation tank; and removing propane in the SPE separation tank to obtain a cinnamaldehyde composition; performing supercritical fractionation on the cinnamaldehyde composition, wherein the supercritical fractionation hardware at least comprises an SFF extraction tank, a first SFF fractionation tank, a second SFF fractionation tank and a third SFF fractionation tank, the subcritical propane fluid extraction conditions are that the pressure of the SPE extraction tank is 30-55 bar, and the temperature is40-75 DEG C, the supercritical fractionation conditions are that the pressure of the SFF extraction tank is 75-350 bar, and the temperature is 32-100 DEG C, the pressure of the first SFF fractionationtank is 74-250 bar and the temperature is 32-100 DEG C, the pressure of the second SFF fractionation tank is 45-200 bar and the temperature is 32-100 DEG C, and the pressure of the third SFF fractionation tank is 40-150 bar and the temperature is 5-100 DEG C.

The invention provides a Raspberry Pi-based water surface movable water quality monitoring node apparatus, including: a main body of the node apparatus, a central control module, a power management module, a mobility management module, a data collection module, and a local area network remote terminal. The main body of the apparatus is constructed by a single hull model. The power management module is fixed at the front of the main body of the apparatus to stably supply power to other modules. The mobility management module is fixed at the tail end of the main body of the apparatus, and drivesthe main body of the apparatus to flexibly move to a target water quality monitoring point at a high speed. The data collection module is fixed on the outside of a middle part of the main body of theapparatus, and is configured to collect water quality data of the target water quality monitoring point. The central control module is fixed in the middle part of the main body of the apparatus, andis configured to acquire, process and analyze the water quality data of the target water quality monitoring point, and communicate with the local area network remote terminal. The invention has the following beneficial effects: the node apparatus has low costs, can be flexibly moved, can be competent for high-load complex operations, and facilitates long-time and large-scale deployment and use.

The invention relates to a method for electrically catalytically degrading ceftazidime in water by adopting a Fe3O4 / biomass carbon cathode, and relates to a preparation of an electric catalytic cathode and application of a degrading method. The invention aims at solving the problems that the traditional Electro-Fenton process is low in H2O2 yield, poor in degrading effect, easy to generate a greatamount of iron sludge on the cathode and the like. The method comprises the following steps: I, preparing Fe3O4 / biomass carbon; II, preparing a cathode catalyst layer; and III, determining technological parameters of Fe3O4 / biomass carbon cathode for degrading the ceftazidime wastewater. The electric catalytic degradation rate of the cathode prepared by the method for the ceftazidime can reach 95percent. A carbon source of the biomass carbon is waste shaddock peel, the catalyst active components and carriers can be reused, and the electrode is simple in preparation process, low in productioncost, and actually energy-saving and environmentally friendly.

The invention discloses a method and device for extracting a cinnamaldehyde-rich composition from cinnamon bark, and relates to the technical field of chemical extraction. The method comprises the following steps: washing cinnamon bark, drying and crushing into fragments; pouring the cinnamon bark fragments into an SPE extraction tank of a subcritical propane fluid extraction device for subcritical propane fluid extraction; introducing the extraction fluid into an SPE separation tank; removing propane in the SPE separation tank to obtain a cinnamaldehyde composition; performing supercritical fractionation on the cinnamaldehyde composition with supercritical fractionation equipment at least comprising an SFF extraction tank, a first SFF fractionation tank, a second SFF fractionation tank and a third SFF fractionation tank, wherein the subcritical propane fluid extraction conditions are as follows: the pressure of the SPE extraction tank is 30-55 bar, and the temperature is 40-75 DEG C;the supercritical fractionation conditions are as follows: the pressure of the SFF extraction tank is 75-350 bar, the temperature of the SFF extraction tank is 32-100 DEG C, the pressure of the firstSFF fractionation tank is 74-250 bar, the temperature of the first SFF fractionation tank is 32-100 DEG C, the pressure of the second SFF fractionation tank is 45-200 bar, the temperature of the second SFF fractionation tank is 32-100 DEG C, and the pressure of the third SFF fractionation tank is 40-150 bar, and the temperature is 5-100 DEG C.

A device and method for purifying sodium thiosulfate by using coking desulfurization waste liquid salt extraction and filter residue as raw material, the device includes a dissolution kettle, a plate and frame filter, a precision filter, an evaporation crystallizer and a centrifugal machine. The present invention uses coking desulfurization waste liquid salt extraction filter residue as raw material, dissolves, plate and frame filter, precision filter, crystallizes in Oslo cooling crystallizer, and centrifugally separates the product sodium thiosulfate. Compared with other methods for preparing sodium thiosulfate, the present invention not only has easy-to-obtain raw materials, simple process, energy-saving, larger crystal particles of the product sodium thiosulfate, but also realizes resource utilization of extraction filter residue, low cost and environmental protection.

The invention relates to a core-less winding machine. The core-less winding machine comprises a winding mechanism, a wire cutting mechanism, a wire drawing mechanism and a wire conveying mechanism that are all mounted on a console; the core-less winding machine is characterized in that the winding mechanism is arranged on the left side of the wire drawing mechanism; the wire cutting mechanism is arranged in the right front side of the winding mechanism; the wire conveying mechanism is arranged opposite to the wire cutting mechanism; a core-pulling guide shaft and a tungsten rod are added in the winding machine. When the winding machine is in use, the core-pulling guide shaft and the tungsten rod are pushed to turn forwards; the tungsten rod is clamped tightly by the wire drawing mechanism and then the wires are conveyed to enable the tungsten rod to be wrapped with tungsten strips; and then tungsten wires are separated from the tungsten rod by cutting. The core-less winding machine is simple in operation, low in cost and environment-friendly.

The invention discloses a preparation method of a phosphorus-containing multi-level porous ZSM-5 / Y composite molecular sieve, which comprises the following steps: mixing an alkali, an organic template agent and deionized water into a solution, adding NaY molecular sieve, adding a silicon source and Boron source, obtain mixed sol crystallization, remove the template agent after recovering the crystallization product, obtain NaZSM‑5 / Y composite molecular sieve; then carry out ammonium ion exchange in ammonium salt solution to remove Na ion, obtain NH4‑ZSM‑5 / Y Y composite molecular sieve; then remove the boron element in the skeleton, and impregnate with phosphide to obtain phosphorus-containing ZSM‑5 / Y composite molecular sieve. The beneficial effects of the present invention are: the preparation method is simple to operate, low in cost and environmentally friendly; the composite molecular sieve of the present invention has micropores and mesoporous structures while having different silicon-aluminum ratios; using the composite molecular sieve of the present invention as a catalyst can solve the problem of existing catalytic In the cracking (FCC) unit, there are technical problems of low catalyst cracking activity and low yield of low-carbon olefins, so as to effectively obtain high-selectivity propylene and improve the product composition of the catalytic cracking process unit.

The invention relates to a water-based antirust agent for metals. The water-based antirust agent comprises, by weight, 50 to 70 parts of inositol hexaphosphate, 10 to 20 parts of sodium citrate, 5 to 10 parts of sodium hydrosulphite, 15 to 20 parts of sodium dodecyl benzene sulfonate, 10 to 15 parts of zinc sulfate, 2 to 4 parts of glycerin and 5 to 10 parts of hydrochloric acid, with the balance being water. The invention has the following beneficial effects: the water-based antirust agent is applicable to long-term antirust treatment of steel and a variety of non-ferrous metals, and has substantial derusting effect and low cost.

The invention relates to the technical field of super-hydrophobic materials, in particular to an anti-icing super-hydrophobic coating constructed on the surface of metal copper in situ and a preparation method and application thereof.The preparation method comprises the steps that firstly, a CuO surface is prepared on a copper base through an anodic oxidation method, the CuO surface is of a nano-needle-shaped multi-stage micro-nano structure, then chemical modification is conducted on the CuO surface, and the super-hydrophobic coating is obtained; the preparation method of the super-hydrophobic coating is simple and environment-friendly, and a rough multi-stage micro-nano structure can be constructed only through two-step treatment. The coating has excellent super-hydrophobic performance, corrosion resistance and anti-icing performance, and plays a certain role in promoting the field of metal copper anti-icing.

The invention discloses a children two-wheeled vertical scooter which comprises a handlebar, a reducing sleeve, a scooter beam, a pedals, a front wheel, a back shaft and a back wheel, wherein the handlebar is composed of a vertical rod, a transverse rod, a front rotating piece, a cylinder plug and a front shaft; an omega shape of the vertical rod is connected with the transverse rod; the front rotating piece and the front shaft are connected to the vertical rod; the scooter beam is composed of a beam pipe, a back rotating piece, two connecting straps, a cylinder plug and the back shaft; the back rotating piece is connected to the front side of the beam pipe; the back shaft is connected to the back end of the beam pipe; the back rotating piece and the front rotating piece are rotationally connected backwardly; the upper side face of the beam pipe is linked with the two connecting straps; the pedals is are connected with the two connecting straps; the front wheel is connected is sleeved onwith the front shaft of the handlebar in a sleeving manner; the back wheel is sleeved onconnected with the back shaft of the scooter beam in the sleeving manner.

The invention relates to a storage method for sweet potato fresh keeping. The method comprises the steps of sweet potato screening, sweet potato airing, plant ash airing, and mixing and storage of plant ash and sweet potatoes. The storage process of the invention does not need any chemical sterilization disinfectant or preservative, does not need investment of special shed cellars and thermoregulation and humidifying facilities, saves resources, has low costs, is environment-friendly, has no decay phenomenon in storage time, has long sweet potato storage time of up to 12 months or above. The obtained sweet potatoes basically have no difference from fresh sweet potatoes in color, mouth feel and nutrient aspect, and maintain the primary color and original taste of sweet potatoes. The storagemethod has advantages of simple operation, good fresh-keeping effect, long preservation time, low costs, has no harm to the human body, and high edible safety performance. The method can reduce the loss of sweet potato farmers and avoid pollution to environment, can enlarge population who eat sweet potatoes, increase consumption quantity, increase sweet potato value, increase the income of the sweet potato farmers and generate large social benefits, facilitates grain storage for people, and also makes greatly contribution for alleviating potential grain strategy safety in China.

The improved filler for the intermediary weathered argillaceous siltstone is characterized by being prepared from the following materials: intermediary weathered argillaceous siltstone fine aggregate,intermediary weathered argillaceous siltstone coarse aggregate, gravels, cement, quick lime and water. The mass part ratio of all the materials is 180:(240-260):(180-220):(50-100):(60-100):(110-150).The invention further provides a preparation method of the intermediary weathered argillaceous siltstone improved filler. The method can effectively overcome the defects of the conventional method for obtaining the backfill. The filler not only can improve the intermediary weathered argillaceous siltstone, but also is simple and feasible, convenient to operate and low in manufacturing cost.

The invention provides an organic electroluminescent compound which has a structure as shown in a formula I. The invention provides a series of OLED luminescent layer materials which take nitrogen-containing and phosphorus-containing oxygen group large heterocyclic rings as frameworks and are connected with arylamine aromatic rings, the OLED luminescent layer materials have excellent carrier transport performance, balance between electron mobility and hole mobility and stability, and the OLED luminescent layer materials as luminescent layer main body materials can remarkably improve the luminescent efficiency of devices and prolong the service life of the devices. The material reduces turn-on voltage (driving voltage) and energy consumption, and is a host material with excellent performance. The series of materials are organic compounds, and compared with phosphorescent metal complexes, the organic compounds are low in cost and environmentally friendly.

The invention belongs to the field of sweet potato storage, and particularly relates to a method for storing sweet potatoes through charcoal functions. The sweet potatoes and wood charcoal / bamboo charcoal are stored mixedly under an air composition environment where the temperature ranges from 1 DEG C to 26 DEG C and the humidity is natural, at least six kilograms of the wood charcoal / bamboo charcoal are allocated to one hundred kilograms of the sweet potatoes, and the distance between the sweet potatoes and the charcoal is smaller than 30 centimeters. The method is used for storing the sweet potatoes, and therefore the sweet potatoes can be stored for more than eight months and have no disease or decay phenomena; in the storage process, neither chemical sterilization disinfectant nor preservative is needed, and special sheds, pits and temperature and humidity regulation facilities are not needed. The wood charcoal for storage can be repeatedly used, storage cost is reduced, and meanwhile the requirement for the environment of sweet potato storage is greatly reduced. The storage process is simplified, the problem that it is difficult to store the sweet potatoes for a long time is solved, and the method is convenient to popularize and makes a great contribution to protection of potential grain strategy safety of our country.

The invention relates to the technical field of bacterium resistance, in particular to a preparation method for an antibacterial fabric, the antibacterial fabric and an antibacterial product. The preparation method for the antibacterial fabric comprises the following steps of step 1, performing plasma treatment on a fabric; step 2, coating the surface of the fabric with a nano-silver antibacterialdispersion solution; step 3, performing drying treatment on the fabric; and step 4, performing infrared treatment on the fabric. The antibacterial fabric is prepared by the above method and comprisesat least one of melt-blown fabric, a non-woven fabric, a cotton fabric and a nylon fabric. The antibacterial product comprises the antibacterial fabric and comprises at least one of a mask, protective clothing and gloves. For the antibacterial fabric and the antibacterial product, the preparation steps are simple, adhesive force between nano silver and fabric fibers is strong, no polymer binder needs to be introduced, the antibacterial activity is better, and the antibacterial fabric and the antibacterial product are more environment-friendly.

The invention discloses a fireproof insulated door and a manufacturing method thereof. The door comprises a metal housing, a fireproof thermal insulated layer in the metal housing, and a thermal insulating layer between the housing and the fireproof thermal insulated layer. The housing is made of steel plates or aluminum alloy boards, and thickness is 1.0 cm to 1.5 cm. The thermal insulating layeris a glass wool layer with thickness of 2.5-3.5 mm. The fireproof thermal insulated layer is formed by uniformly mixing 15-20 parts of black clay powders or slag powders, 8-12 parts of polytetrafluoroethylene, 3-5 parts of compound type animal protein foaming agent, 12-15 parts of phenolic resin, 5-8 parts of flexibilizer, and 1-1.5 parts of tea saponin, and then spontaneous curing. The flexibilizer is one selected from carboxylic acrylonitrile butadiene rubber, liquid nitrile rubber, and polyvinyl butyral. The manufactured fireproof insulated door has good fireproof property from the door housing and the internal materials, and is provided with the thermal insulating layer and a thermal insulating material in the fireproof thermal insulated layer is added, having good thermal insulationeffect. Thus, the fireproof insulated door made by the manufacturing method has good fireproof thermal insulation effect.

A three-wheel vertical type scooter for a child comprises a handlebar, a reducing sleeve, a scooter beam, a pedal, a front wheel, a rear shaft and two rear wheels. The handlebar is composed of a vertical rod, a transverse rod, a front rotary piece, a cylindrical plug and a front shaft. A part shaped like a Greek letter omega of the vertical rod is connected with the transverse rod. The front rotary piece and the front shaft are connected to the vertical rod. The front side, bent upwards, of a beam pipe is connected with a rear rotary piece. The rear rotary piece is rotationally connected with the front rotary piece backwards. The upper side face of the beam pipe is in linkage with two connecting sheets. The rear end of the beam pipe is connected with the rear shaft. The pedal is connected with the two connecting sheets. The front shaft of the handlebar is sleeved with the front wheel. The two ends of the rear shaft are sleeved with the rear wheels. The rear shaft is composed of round steel with the two ends provided with external threads, two lining pipes and two anti-slip nuts.

The invention relates to a safe and environment-friendly non-core reeling machine. The safe and environment-friendly non-core reeling machine comprises a reeling mechanism, a wire shearing mechanism, a wire pulling mechanism and a wire feeding mechanism. The reeling mechanism, the wire shearing mechanism, the wire pulling mechanism and the wire feeding mechanism are installed on an operation table. The safe and environment-friendly non-core reeling mechanism is characterized in that the reeling mechanism is arranged on the left side of the wire pulling mechanism, the wire shearing mechanism is arranged in front of the right side of the reeling mechanism, and the wire feeding mechanism is arranged opposite to the wire shearing mechanism. A core pulling guide shaft and a tungsten rod are additionally arranged in the reeling device. During work, the core pulling guide shaft and the tungsten rod are pushed to rotate forwards, the tungsten rod is clamped through the wire pulling device, wire feeding is conducted afterwards, a tungsten wire can disengage from the tungsten rod through cutting, operation is simple, the cost is low, and environment friendliness is achieved.

The invention belongs to the technical field of building blasting, and particularly relates to a safety covering system for foundation pit blasting in a complex environment and a covering method The safety covering system for foundation pit blasting in the complex environment is provided with a rubber mat, a straw mat layer, a dense mesh type safety net and a sandbag from bottom to top. A plurality of holes are formed in the four edges of the rubber pad, a buckle is arranged on each hole, four fixing frames are arranged around the rubber pad, and each fixing frame penetrates through the holes in the same row of the rubber pad. The covering method of the safety covering system for foundation pit blasting in the complex environment comprises the steps of weaving of the rubber mat, lap joint of the straw mat and covering of the sandbag. By means of the safety covering system composed of the rubber mat, the straw mat layer and the dense mesh type safety net, safety protection on blasting operation is well achieved.

The invention discloses a methanol water reforming hydrogen production pumping system. The methanol water reforming hydrogen production pumping system comprises a methanol water storage tank, a hydrogen production module, a hydrogen buffer tank, a pumping module, a control module and a power supply module, the methanol water storage tank is connected with the hydrogen production module through a pipeline, the hydrogen buffer tank is correspondingly connected with the hydrogen production module and the pumping module through a pipeline, the hydrogen production module is electrically connected with the power supply module, and the methanol water storage tank, the hydrogen production module, the hydrogen buffer tank and the pumping module are correspondingly and electrically connected with the control module; and the pumping module comprises an internal combustion engine and a pump body driven by the internal combustion engine. According to the methanol water reforming hydrogen productionpumping system, the structure is simple, use is convenient, because methanol water is very difficult to ignite, almost all generation produced by combustion is water, the transportation is very convenient, use is safe and reliable, the cost is low, environmental protection is achieved, a very good economic effect is achieved, and a high promotion value is achieved.