3467results about How to "Promote safe production" patented technology

The present invention relates to methods of making and using composites and scaffolds as implantable devices useful for tissue repair, guided tissue regeneration, and tissue engineering. In particular, the present invention relates to methods of making and using compression molded resorbable thermoplastic polymer composites which can be subsequently processed with non-organic solvents to create porous, resorbable thermoplastic polymer scaffolds or composite scaffold with interconnected porosity. Furthermore, these composites or scaffolds can be coated with an organic and/or inorganic material.

The invention discloses a low-temperature self-crosslinking polyacrylate pigment printing binding agent and a preparation method thereof. The method comprises the following steps of: based on part by mass, preparing pre-emulsion from 70-90 parts of soft monomer, 10-30 parts of hard monomer, 5-10 parts of crosslinking monomer, 2-5 parts of ketone-containing carbonyl monomer, 0.6-3.0 parts of emulsifier and 50-70 parts of de-ionized water; adding 25-33 parts of de-ionized water, 0.2-1.0 part of emulsifier and 0.2-0.6 part of pH buffer; adding 14-16 parts of pre-emulsion and 2-2.5 parts of initiator solution; heating to 78-82 DEG C; dropwise adding remaining pre-emulsion and initiator solution after blue light occurs; heating to 85-90 DEG C and preserving heat for 0.5-1 hour; then cooling to be below 40 DEG C; adjusting pH value to be 6.5-7.0; and finally adding solution formed by dissolving 1-3 parts of hydrazide based monomer in 4-5 parts of de-ionized water. The agent is a formaldehyde-free environmentally-friendly product.

The invention discloses a preparing method of graft copolymerization carboxylate high-performance dehydragent belonging to dehydragent domain, which comprises the following steps: choosing methoxy carbowax with molecular weight distributing between 1000-2000 and acroleic acid or methacrylic acid as main raw material; adopting total acid method esterified priority method; preparing intermediate (big monomer) with polymerization activity; adding third monomer into polymerization reaction; adjusting polymerization activity of copolymerization system; proceeding technique route synthesis of main chain polymerization in the water solution. The getting big monomer possesses merits of high conversion rate, short reacting time, simple process flow and strong controlling property.

The invention discloses applicable classification method for mining under the shallow bedrock of thin seam keeping water conditions. Apply to thin seam overlying shallow bedrock aquifer water loose the protection of water resources. At first according to the feature of structure or Shallow bedrock, the height of leading water crevasse under different mining height is analyzed and calculated. The estimate formula: HL=9.29M+10.6 can be used to determine the height HL of leading crevasse water under the shallow bedrock of thin seam to the different mining height M. The mining waterproofing security coal rock pillar protector thickness of the thin bedrock shallow submersion coal bed long well working surface is 10 m. According to the classification situation of loose water-bearing stratum water body, the bedrock thickness which is needed is determined under the condition of different mining height. According to classification situation and mining height, mining is separated into reinsurance water mining according to the bedrock thickness. This method has good water resources protection effect, is safe in production, and has high coal resource returns-ratio.

The present invention integrates the use of pre-manufactured structures with minimal on-site installation and lift-slab construction to achieve the construction of multi-story buildings. The pre-manufactured structures are designed to be readily integrated with both horizontal and vertically adjacent building components, including lift-slab components, so that multiple building stories may be readily and securely stacked, one on top of the other. The present invention advantageously permits top- down lift-slab construction for multi-story buildings. The present invention also provides for the development of flexible design plans for institutional, residential, office and other types of buildings. The present invention advantageously provides for easier, more efficient, faster, cheaper, safer, higher quality and more consistent, environmentally advantaged, energy-efficient, easier to maintain, intelligently designed, and customizable multi-story building construction.

The invention discloses a pesticide preparation containing plant vinegar liquid, wherein the ingredients include plant vinegar liquid 1-99%, conventional pesticides 0.1-90.0%.

Disclosed in the invention is a multi-information coupling prediction method of coal and gas outburst danger, which is achieved by establishing a multi-index coupling prediction model to detect indexes including original gas pressure of a coal layer, the original rock stress, the critical burst gas pressure of a coal sample, the mechanical performance of coal body, the exploit influence, the drilling cutting gas desorption index, the drilling cutting quantity index and the like, therefore to coupling predict the coal and gas outburst danger. By the multi-information coupling prediction method, the information of the coal and gas outburst danger can be fully complemented; the gas and crustal stress outburst danger prediction is carried out; the defects of insufficient complementation information of a single-index and inaccurate prediction are overcome; and the accuracy of the coal and gas outburst danger prediction is improved.

The invention discloses a pyrotechnical hot-gas sol fire extinguishing agent and a preparation method thereof, and relates to the field of fire extinguishers. The pyrotechnical hot-gas sol fire extinguishing agent is prepared from 41 to 56 weight percent of first oxidant, 8 to 15 weight percent of second oxidant, 15 to 26 weight percent of burnable agent, 4 to 17 weight percent of adhesive and 2 to 22 weight percent of functional additive. The preparation method comprises the following steps of: mixing the oxidants, the burnable agent and the functional additive, then screening the mixture, stirring the mixture and the adhesive, mixing and stirring the mixture and organic solution, pressing the mixture and drying the mixture. The pyrotechnical hot-gas sol fire extinguishing agent has the characteristics of high fire extinguishing efficiency, simplified fire extinguishing composition, no influence of combustion reaction on external oxygen concentration change, no harm substance production to human bodies, animals and natural environments, safer operating mode, simpler and more convenient preparation method and the like, and is suitable for extinguishing fire of fuel and electrical equipment of automobile engine cabins, airplane fuel cabins, power distribution cabinets and the like.

The invention relates to an electrostatic spinning method and a nanometer fiber/anti-sticking non-woven fabric composite filter material prepared through the electrostatic spinning method. Multi-needle electrostatic spinning is adopted in the electrostatic spinning method, and needles of multi-needle electrostatic spinning are insulated from one another. The prepared nanometer fiber/anti-sticking non-woven fabric composite filter material is formed by overlapping and compositing materials for overlapping from bottom to top according to the low-to-high sequence of filtering efficiency of a filtering material, the face, with electrostatic spinning fiber, of each layer of material for overlapping faces upwards, the uppermost layer of material for overlapping is covered with anti-sticking non-woven fabric, and therefore it is ensured that the top layer and the bottommost layer are both anti-sticking non-woven fabric layers; of every two adjacent layers of materials for overlapping, the filtering efficiency value for particles with grain size of 0.02 micron to 10 microns of the upper layer is 1.03-1.3 times that of the lower layer, the number of overlapping layers of the materials for overlapping ranges from 2 to 6, the anti-sticking non-woven fabric and the interlayer structure with electret effect nanometer fibers arrayed at intervals are formed, and the nanometer fiber/anti-sticking non-woven fabric composite filter material is formed; the filtering efficiency of the nanometer fiber/anti-sticking non-woven fabric composite filter material for particles with grain size of 0.02 micron to 10 microns reaches 99.999% or higher, and the pressure resistance is kept between 10 Pa and 30 Pa.

An illumination device and methods are provided herein for avoiding over-current and over-power conditions in one or more power converters included within the illumination device. The illumination device may include at least a plurality of light emitting diode (LED) chains, a driver circuit, at least one power converter, and a control circuit. In some embodiments, the control circuit may be generally configured for determining a maximum safe current level and/or a maximum safe power level attributed to the power converter(s) at a present operating temperature, and for adjusting respective drive currents supplied to the plurality of LED chains by the driver circuit, so as not to exceed the maximum safe current level or the maximum safe power level at the present operating temperature. In some embodiments, a temperature sensor may be included within the illumination device for measuring the operating temperature presently associated with the power converter(s).

The invention discloses a lignin reinforcing filled butadiene-acrylonitrile rubber hose which mainly comprises a lignin reinforcing filled butadiene-acrylonitrile rubber blended elastomer, sulfur, zinc oxide, stearic acid, a accelerant, an anti-aging agent and the like. The lignin reinforcing filled butadiene-acrylonitrile rubber hose has the advantages of high mechanical strength, favorable oil resistance, high adhesion strength with framework materials, such as steel wires and the like; and the finished product has the characteristics of light weight, high pulse resisting capacity and long service life, and can reduce the material cost and the environmental pollution.

The invention relates to a technology and a device system for producing dimethyl oxalate by high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The technology comprises the following steps: adopting industrial NO, O2 and methanol as raw materials for an esterification reaction to produce methyl nitrite; adopting industrial CO and methyl nitrite for a carbonylation reaction in a plate reactor to produce carbonylation products, which mainly include dimethyl oxalate and dimethyl carbonate; separating the carbonylation products to obtain dimethyl carbonate products; subsequently adding hydrogen into dimethyl oxalate in the plate reactor to produce ethylene glycol products; conducting the coupling recovery treatment on waste acids in the esterification reaction and purge gases in the carbonylation reaction for recycling. The device system comprises an esterification reaction system, a carbonylation reaction system, a coupling recovery system for purge gases and waste acids and a hydrogenation reaction system. The technology has the characteristic that device consumption is remarkably reduced, and particularly the nitric acid waste liquid recycling and purge gas recycling technologies as well as the separation technologies thereof are highly coupled; recycling of the raw materials in reaction waste gases is realized, and the effect is remarkable.

The invention discloses a drug composition and making method of stable calcium Bimvastatin, which comprises the following parts: 0.01-10% calcium Bimvastatin, 10- 93% filler, 1-30% disintegration agent, 0.01-5% lubricant and 0.1-80% alkali findings.

The invention relates to the technical field of waste liquid treatment, relates to wastewater treatment of development of continental shale gas and especially relates to a treatment method of a continental shale gas well fracturing operation waste liquid. The treatment method of continental shale gas well fracturing operation waste liquid is characterized in that the treatment method is carried out by five steps of: adjusting pH, oxidizing and reducing viscosity, flocculating and settling, separating solid and liquid, absorbing and filtering. The method provided by the invention has the characteristics of simple process, low cost, continuous treatment, safe production, stable treatment effect and no limit of environment condition; the treated water can be recycled; the fracturing liquid or reinjection formation is configured, so that the water resource is saved; and the method provided by the invention is beneficial to environmental conservation.

The invention discloses a super-retarding polycarboxylic acid water reducer and a preparation method and a using method thereof. The super-retarding polycarboxylic acid water reducer is directly synthesized in the presence of ammonium sulfate by using allyl polyethylene glycol (with number-average molecular weight of 600 to 2,400), methyl acrylate, maleic anhydride, sodium lignosulphonate and sucrose fatty acid ester and by neutralizing with sodium hydroxide. The price of the raw materials is low, the product performance is stable, and the market prospect is bright.

The invention relates to an integral indoor ecological circulating water culture system, belonging to the technical field of culture water biological purification. The system comprises a vinyl house, a sedimentation basin, a methane tank, a biological filter pool A, a biological filter pool B, a biological filter pool C, a water storage tank, a breeding pond A, a breeding pond B, a breeding pond C, a breeding pond D and a breeding pond E, and wherein the sedimentation basin, the biological filter pools, the water storage tank, and the breeding ponds are symmetrically arranged in the vinyl house in a straight line. A water collecting main pipe, a back-flow pipe and an aeration main pipe are sequentially arranged on two sides of the sedimentation basin, the biological filter pools, the water storage tank and the breeding ponds. After being processed by multiple steps such as automatic collection and sedimentation, filtration, and absorption and conversion by water plant and stuffing materials, the breeding water of the system enters into the water storage tank to be subjected to reoxygenation and sterilization, then the breeding water is promoted into the breeding ponds for circulation and utilization through an immersible pump, thus the production cost of indoor industrial culture is lowered, and the system has remarkable popularization and application prospect in water shortage areas in our country for developing the high-density culture.