31results about How to "Reduce or eliminate hazards" patented technology

The invention relates to a production method of sodium fluosilicate. The method comprises the following steps: adding a phosphoric acid purification device to purify the phosphoric acid produced in a phosphoric acid workshop; injecting the purified phosphoric acid in a filtrate receiver, injecting in a reaction tank by using a variable frequency pump; injecting fluorine-removing agent in the reaction tank at a ratio according to the fluorine content of phosphoric acid, reacting by utilizing the stirring action of the reaction tank; injecting the obtained mixture in a settling tank by using a pump after the reaction in the reaction tank, centrifuging the settled precipitate, and drying to obtain a sodium fluosilicate product and obtain the defluorinated phosphoric acid on the upper layer. In the method, after wet-process phosphoric acid is purified, fluorine-removing agent is used to remove about 2% of fluorine in phosphoric acid and form insoluble fluosilicate, and the fluosilicate is precipitated, washed, separated and dried to obtain a sodium fluosilicate product, thus the rational utilization of resource can be realized and the economic benefit of the enterprise can be increased. By adopting the method, fluorine resource can be fully recycled in the production process of compound fertilizer, high quality fluorine-free compound fertilizer can be produced and the damages to soil can be reduced or eliminated.

The invention relates to a method for developing underground coal seam gas, and provides a method for extracting coal seam gas through ground fracturing and underground horizontal drill holes in order to ensure the safety production of a coal shaft and improve the air permeability of the underground drill holes as well as the extraction efficiency of gas. The method comprises the following steps: 1) shaft placing design; 2) ground shaft drilling, as well as ground construction of vertical drill holes or directional drill holes for a mine in areas with roadways and without construction of underground coal seam gas extraction drill holes; 3) hydraulic fracture, namely, conducting hydraulic sand fracture after well completion so as to form high permeable fracture influenced areas; 4) underground horizontal long drill holes, namely, drilling horizontal directional seam gas extraction holes along a main mineable coal seam to form a horizontal drill hole influenced areas; the horizontal drilling hole influenced area is communicated with the fracture influenced area to realize the coal seam gas extraction. Through adopting the method provided by the invention, the hazard of coal mine gas disaster can be eliminated, and the guarantee degree of safety production of the coal mine can be improved at the same.

The invention discloses automatic elevator guide rail mounting equipment and a method thereof. The equipment comprises a lifting box body, automatic angle iron mounting devices, guide rail carrying devices and distance measuring devices, wherein the lifting box body is of a structure with at least two layers; a plurality of groups of automatic angle iron mounting devices are mounted on an upper-layer platform of the lifting box body; a plurality of groups of guide rail carrying devices are arranged on the upper-layer platform or / and a lower-layer platform of the lifting box body; each group of guide rail carrying devices comprise guide rail taking and fixing modules used for taking materials and guide rail aligning and moving modules used for moving guide rails to guide rail support frames and positioning the guide rails; and the distance measuring devices are used for measuring vertical gaps between next operation positions and previous operation positions and measuring the gaps between angle irons and the guide rails so as to determine the horizontal lengths of the guide rail support frames. The automatic elevator guide rail mounting equipment, the guide rails can be automatically mounted; the time and the labor are saved; and the construction risk in the mounting process can also be reduced.

The invention provides a method for preparing tobacco leaves containing no nicotinamide or little nicotinamide, comprising the following steps of: soaking the dried tobacco leaves in a fermentation liquid, preparing the fermentation liquid by the following weight portion ratios: 50-100 portions of jujube, 50-100 portions of apple, 15-30 portions of angelica and 150-300 portions of red wine; leading the fermentation to last 30-60 days at the temperature of 30-40 DEG C for standby; subsequently arranging the tobacco leaves in the fermentation liquid at normal temperature; soaking and fermenting the tobacco leaves for 7-10 days; and separating the leaves from the liquid and subsequently preparing the products such as cigarettes, cigars, cut tobaccos and the like by normal cigarette process. The method has the advantages that the raw material is easy to be obtained and the cost is low, the obtained product effectively reduces or eliminates the harm of the nicotinamide to the smokers or passive smokers, optimizes the social sanitary environment, and provides help for the healthy development of the tobacco industries. Detected by provincial food authority department according to national standard, the content of the nicotinamide in the tobacco leaves is reduced to less than 0.035%.

The invention provides a method for preparing tobacco leaves containing little nicotinamide, comprising the following steps of: soaking the dried tobacco leaves in a fermentation liquid, preparing the fermentation liquid by the following weight portion ratios: 50-100 portions of jujube, 50-100 portions of apple, 15-30 portions of angelica and 150-300 portions of red wine; leading the fermentation to last 30-60 days at the temperature of 30-40 DEG C for standby; subsequently arranging the tobacco leaves in the fermentation liquid at normal temperature; soaking and fermenting the tobacco leaves for 7-10 days; and separating the leaves from the liquid and subsequently preparing the products such as cigarettes, cigars, cut tobaccos and the like by normal cigarette process. The method has the advantages that the raw material is easy to be obtained and the cost is low, the obtained product effectively reduces or eliminates the harm of the nicotinamide to the smokers or passive smokers, optimizes the social sanitary environment, and provides help for the healthy development of the tobacco industries. Detected by provincial food authority department according to national standard, the content of the nicotinamide in the tobacco leaves is reduced to less than 0.035%.

The invention relates to a method for developing underground coal seam gas, and provides a method for extracting coal seam gas through ground fracturing and underground horizontal drill holes in order to ensure the safety production of a coal shaft and improve the air permeability of the underground drill holes as well as the extraction efficiency of gas. The method comprises the following steps: 1) shaft placing design; 2) ground shaft drilling, as well as ground construction of vertical drill holes or directional drill holes for a mine in areas with roadways and without construction of underground coal seam gas extraction drill holes; 3) hydraulic fracture, namely, conducting hydraulic sand fracture after well completion so as to form high permeable fracture influenced areas; 4) underground horizontal long drill holes, namely, drilling horizontal directional seam gas extraction holes along a main mineable coal seam to form a horizontal drill hole influenced areas; the horizontal drilling hole influenced area is communicated with the fracture influenced area to realize the coal seam gas extraction. Through adopting the method provided by the invention, the hazard of coal mine gas disaster can be eliminated, and the guarantee degree of safety production of the coal mine can be improved at the same.

The invention discloses a rotary cooler. The rotary cooler is of a single column and connection rod structure and comprises a connecting thread head, a water collection port, a water-dispersing conical head, a rotary impeller and a bottom water disperser, wherein a thread is arranged at one end of the connecting thread head, the other end of the connecting thread head is a connection end, the connection end of the connecting thread head is connected to the water collection port, the water collection port is connected to the water-dispersing conical head, the rotary impeller is arranged on a conical head body of the water-dispersing conical head, the bottom water disperser is arranged at the bottom end of the rotary impeller, water flow impacts a water-guiding conical body of the water-dispersing conical head so as to be guided and separated, and therefore the separation effect of a separating conical body can be improved, and the centrifugal force and the splattering speed of water can be increased. According to the rotary cooler, the head falling problem, the breakage problem and the filler washing-off problem of a splashing device can be solved; damage caused by freezing of a water tower in winter can be reduced or eliminated; auxiliary power can be reduced; the coal consumption can be lowered; and the maintenance cost can be lowered, the water distribution uniformity can be improved, the water outlet temperature of the water tower can be lowered, the exhaust steam pressure of a turbine can be lowered, and the coal consumption of power generation can be reduced.

The invention discloses an elevator guide rail automatic installation equipment and method. The equipment includes a lifting box, a bottom code automatic installation device, a guide rail handling device and a distance measuring device. The lifting box has at least two layers of structure; The code automatic installation device is installed on the upper platform of the lifting box; the guide rail handling devices are multiple groups, and the multiple sets of guide rail handling devices are arranged on the upper platform or \ and the lower platform of the lifting box; each set of guide rail handling devices includes The guide rail retrieving and fixing module used for retrieving materials and the guide rail alignment moving module used to move the guide rail to the guide rail bracket and realize positioning; the distance measuring device is used to measure the vertical distance between the next working position and the previous working position. It is used to measure the distance between the base code and the guide rail to determine the horizontal length of the guide rail bracket. The elevator guide rail automatic installation device of the present invention can automatically realize the installation of the guide rail, which not only saves time and effort, but also reduces construction risks during the installation process.

The invention discloses a fastener construction equipment with adjustable installation posture, which includes a construction machine platform, a construction device and a construction posture adjustment device; the construction device includes a mounting frame, a construction module and a lateral drive module; the construction module includes The frame, the punching module and the fastener installation module; the fastener installation module includes a fastener lifting module and a fastener locking module; expansion bolts and lock nuts are installed on the fastener; the The construction posture adjustment device includes a telescopic cylinder; the front side of the mounting frame is rotatably connected to the construction machine platform through a plurality of rotating structures, and the rear side is supported on the construction machine platform; the cylinder body of the telescopic cylinder is rotatably connected to the construction machine platform. On the stage, the telescopic rod is hinged with the rear side of the mounting frame. The fastener construction equipment of the present invention can automatically adjust the angle of the construction device, so it is suitable for installation of fasteners on different shapes of building surfaces or different positions on the same building surface, and has a wider application range.

The invention relates to an energy-storage-type heat supply wine-warming kettle. The energy-storage-type heat supply wine-warming kettle is provided with a kettle body and a kettle seat, wherein the kettle body is connected with the kettle seat through threads, a closed heating tank is installed inside the kettle body, the side wall and the top surface of the heating tank are respectively and movably connected with a liner of the kettle body, the bottom of the heating tank is movably connected with the kettle seat, a heat storage medium is installed inside the heating tank, the heating tank is placed in the boiled water to be heated, then the heating tank is placed into the kettle body, the heat storage medium inside the heating tank can continuously release the heat of 78 DEG C for three hours at a normal temperature, thus effectively reducing or eliminating the harm of methanol and aldehydes harmful substances inside the wine; and meanwhile, the ethanol content in the wine is not decreased, the heat storage medium is sealed inside the heating tank, so that the heating tank can be separated from the kettle body to store the heat, and the heating tank is then placed into the kettle body after the heat is stored, so that the energy-storage-type heat supply wine-warming kettle is safe and convenient to use and has good popularization value.

The invention discloses an anodized aluminum hot stamping foil applied to overlapping hot stamping on a bronzing layer and a preparation method thereof. The existing anodized aluminum hot stamping foil may have transfer incompleteness, missing hot stamping, pasting, and dropout during overlapping hot stamping. There are disadvantages such as powder and unclear edges of the hot stamping layer. The hot stamping foil of the present invention is composed of a base film layer, a release layer, a colored layer, a vacuum aluminized layer and an adhesive layer, and the adhesive layer is prepared from the following raw materials in parts by weight: vinyl chloride-vinyl acetate resin 1-6 1-10 parts of polyvinyl alcohol, 1-10 parts of acrylate, 1-5 parts of nitrocellulose, 1-5 parts of fumed silica, 20-70 parts of ethyl acetate, 10-50 parts of ethanol, propyl acetate 1-5 parts of ester. The present invention is applied to anodized aluminum hot stamping foil for overlapping hot stamping on the hot stamping layer, which has good hot stamping and trimming properties, complete transfer of overlapping hot stamping layers, smooth edges without burrs and firm adhesion, no flying gold, peeling off Powder and other phenomena, the hot stamping effect has a strong three-dimensional effect, and the anti-counterfeiting performance is more prominent.

The invention discloses an automatic installation and locking device for fasteners, comprising a frame, a fastener lifting module and a fastener locking module; the fastener lifting module includes a bracket, a positioning seat and a first vertical drive A clamping mechanism is provided below the positioning groove of the positioning seat; the fastener locking module includes a bracket provided on the bracket for sending the expansion bolts in the fasteners to be installed into the openings, Tighten the lock nut on the expansion bolt to realize the wind cannon and the second vertical drive mechanism for locking the fastener on the building surface, the opening of the wind cannon is connected to the fastener located on the positioning seat The lock nut of the expansion bolt in the fuselage is matched, and the axes of the two are coincident. The fastener automatic installation and locking device of the present invention can automatically install the fastener on the building surface, which not only reduces the construction cost, but also helps to improve the construction efficiency and reduce or eliminate the danger brought by the construction.