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

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 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 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 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.

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 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.