154results about How to "Improve the level of environmental protection" patented technology

The invention relates to a steel slag treating technology which can be used for treating steel slag after which is stabilized by adopting a hot and stuffy method. According to the technology, the steel slag is treated by the procedures of screening, crushing, magnetic separation, purification and the like through utilizing the mode of combining an open loop and a closed loop circulation to obtain five high-value-added high-quality products, namely first-type bulk slag steel with the grade of more than or equal to 80% and particle size of 150mm, a second-type bulk slag steel with the grade of more than or equal to 80% and particle size of 50-150mm, slag steel with grade of more than or equal to 85% and particle size of 10-50mm, magnetic separation powder with grade of more than or equal to 42% and particle size of 10mm, and metal iron content (2% of tailings with the particle size of 10mm), wherein the first-type bulk slag steel and the second-type bulk slag steel and the slag steel with the grade of more than or equal to 85% can be returned for steelmaking, the magnetic separation powder can be used for sintering, and the tailings can be used for producing steel slag micropowder as high-activity admixture of cement and concrete and the like. Through the technology, the zero emission of the steel slag can be realized, the defects that the steel slag stored occupies a large area and pollutes the environment can be solved, and the economic benefits of a steel mill can be increased.

The invention discloses a construction process of a double-layer jacking culvert penetrating through existing railway lines. The construction process includes the following steps: (1) precasting of an upper-layer bridge culvert body, (2) construction of a back and a back beam used for jacking of the upper-layer bridge culvert body, (3) reinforcement of the existing railway lines, wherein the existing railway lines are reinforced through a line overhead reinforcing structure, (4) digging of a jacking pit of the upper-layer bridge culvert body, (5) jacking of the upper-layer bridge culvert body, (6) construction of a bottom supporting system of the upper-layer bridge culvert body, (7) detachment of the line overhead reinforcing structure, (8) precasting of a lower-layer bridge culvert body, (9) construction of a back and a back beam used for jacking of the lower-layer bridge culvert body, (10) digging of a jacking pit of the lower-layer bridge culver body, (11) jacking of the lower-layer bridge culvert body, and (12) concrete pouring, wherein after the lower-layer bridge culvert body is jacked properly, concrete is poured between the upper-layer bridge culvert body and the lower-layer bridge culvert body. The method is simple, reasonable in design, low in investment construction cost and good in using effect, the construction process of the double-layer jacking culvert can be easily, conveniently and quickly finished and is high in quality, and the construction process is safe and reliable.

The invention discloses a formula of a formaldehyde remover made from a natural plant extract and a preparation method thereof. The raw material of the formaldehyde remover is the natural plant extract which can react with formaldehyde with high efficiency. After being prepared, the solution of the formaldehyde remover is added into adhesives, or sprayed on the surfaces of furniture or plates or sprayed into the air to make formaldehyde content of a post-processed products or space meet the requirements of national standards.

The invention discloses an adhesive. The adhesive is characterized in that the adhesive is prepared from raw materials including 12,666 to 12,726kg of aqueous formaldehyde solution, 9,972 to 10,237.2kg of urea, 55 to 65kg of polyvinyl alcohol, 1,176 to 1,224kg of melamine and 11 to 13kg of aqueous sodium hydroxide solution. In the aqueous formaldehyde solution, the mass percent of formaldehyde is36.5 to 37.5; in the urea, the mass percent of nitrogen is 46.0 to 46.4; and in the aqueous sodium hydroxide solution, the mass percent of sodium hydroxide is 25 to 35. The adhesive has the advantages that the productive technology is simple, the solid content is high, the free formaldehyde content is low, formaldehyde catcher or modifying agent is not required to be added during adhesive mixing process when the adhesive is used for manufacturing particle boards, the curing time of the mixed adhesive is short, and the formaldehyde emission of the particle boards manufactured through the adhesive is stable, and can meet the standard of E0F4 level of Japan and the standard on formaldehyde emission in the second stage according to Composite Wood Products Airborne Toxic Control Measure (ATCM)of California, USA.

The invention discloses a flow line magnesium electrolysis production method. In the method, a head cell (1), a melt pipeline (2), an electrolysis cell (3) and a tail cell (6) are utilized; and the head cell (1), the electrolysis cell (3) and the tail cell (6) are connected in series through the melt pipeline (2) to form a closed cycle magnesium electrolysis production method. By adopting the method, the defect that the conventional magnesium electrolysis cell can only be operated independently is overcome, and centralized charging and centralized magnesium production of a magnesium electrolysis process are realized. The labor intensity of workers is reduced, and the frequency of conveying high-temperature melt through a crown block in a workshop is greatly reduced, so that the safety production level is improved.

The invention discloses an integrated control system and control method of formaldehyde-free decoration. The system is composed of a decoration material data module, a decoration material detection module, a decoration process monitoring module, and a data analysis center. The decoration material data module is used for storing formaldehyde content data of a decoration material; the decoration material detection module is used for carrying out formaldehyde content detection on the decoration material; the decoration process monitoring module is used for monitoring a formaldehyde content in air at a decoration scene; and the data analysis center is used for receiving data information transmitted by all modules and analyzing whether a formaldehyde content exceeding phenomenon occurs. The data analysis center carrying out signal connection with the decoration material data module, the decoration material detection module, and the decoration process monitoring module is used for analyzing whether a phenomenon of exceeding a standard by the formaldehyde content exists in the data information transmitted by all modules by the data analysis center. Therefore, selection control of decoration materials before decoration as well as formaldehyde monitoring during the decoration process and after decoration can be realized.

The invention provides an efficiently environment-friendly graphitization furnace cooling technology. The efficiently environment-friendly graphitization furnace cooling technology comprises the following specific steps of: step 1. increasing a material absorbing depth and a material absorbing frequency step by step by using a multifunctional traveling crane and taking time as a moving direction, and controlling the temperature reduction range of a product to be less than 30 DEGC/h, when the product is exposed, the surface temperature of the product is less than 400 DEG C; step2. screening a heat preservation material in a main storage bin of the multifunctional traveling crane; and step 3. carrying out dedusting on the screened granules. The multifunctional traveling crane provided by the invention is used for the graphitization furnace cooling technology and can independently complete the cooling process. Due to the adoption of the multifunctional traveling crane, the cooling time of the graphitization furnace is shortened, the working efficiency is improved, the production cost is reduced, and the environmental protection level of the graphitization furnace in the cooling process is increased.

The invention discloses an online monitoring and management system for an ultra low emission unit, which comprises a data processing module, a technological process configuration processing module and an evaluation index online calculation module, wherein the data processing module is composed of a data acquisition module, a data compression transmission module and a data storage module; the technological process configuration processing module uses PI Processbook to carry out full replication on a field DCS monitoring scene, an SVG technology is used for carrying out processing and display on a monitoring platform, and full replication of the field technological process can be realized; and the evaluation index online calculation module captures measurement point hour data from a PI real-time database for calculation to thus judge whether ultra low emission desulfurization, denitration and dust removal facilities are put to operation according to the configuration information. Real-time online management on the operation condition of the ultra low emission facility of a coal-fired unit can be realized, the power environmental protection supervision range is expanded, and the power environmental protection supervision level is enhanced.

The invention relates to a shaft-extending cross-flow propeller type water turbine. The shaft-extending cross-flow propeller type water turbine comprises a water inlet part, a water guide mechanism, aleading bearing mechanism, a front spindle, a front spindle seal, a runner mechanism, a runner chamber, a tail water conical pipe, an S-shaped tail water elbow pipe, a rear spindle, a rear spindle sealing mechanism and a thrust combination bearing, wherein the inner diameter of the runner chamber is of a spherical shape, the runner blade of the runner mechanism is a rotatable runner blade, the outer edge of the runner blade of the runner mechanism is spherical, the fixed propeller runner of the water turbine is designed into the rotating propeller runner structure for the first time in China,the shaft-extending cross-flow water turbine blade can be kept in a co-linkage manner along with the change of the water head and the load, the operating range of the water turbine is expanded, the efficiency of the water turbine is improved, and the stability of the unit is improved.

The invention relates to a halogen-free red phosphorus-free eco-friendly material and a use thereof and especially relates to a halogen-free red phosphorus-free high-flame retardation heat-shrinkable bush and a preparation method thereof. The halogen-free red phosphorus-free high-flame retardation heat-shrinkable bush comprises, by weight, 80-100 parts of an ethene-vinyl acetate copolymer, 5-30 parts of an ethene-octylene copolymer and/or an ethene-butene copolymer and/or an ethene-ethyl acrylate copolymer and/or an ethene-methyl methacrylate copolymer, 90-120 parts of a phosphor-nitrogen composite fire retardant, 1-10 parts of a compatilizer, 1-10 parts of a lubricant and 1-10 parts of a composite anti-oxidant. In halogen-free red phosphorus-free high-flame retardation heat-shrinkable bush production, an inorganic material is used as a raw material and does not contain red phosphorus and halogens so that an environmental protection level is high, poisonous and harmful gas produced through red phosphorus and halogens is avoided, human health is protected and environmental friendliness is obtained. The halogen-free red phosphorus-free high-flame retardation heat-shrinkable bush has low contraction temperature responsiveness, can completely shrink at a temperature of less than or equal to 95 DEG C and has a low shrinkage temperature.

The invention discloses lightweight concrete as well as a preparation method and an application thereof. The lightweight concrete is prepared from raw materials as follows: cement, building wastes, calcium oxide, fiber, a water reducing agent, a foam stabilizer, an air entraining agent, cellulose ether, a foaming agent, hydrogen peroxide, an expanding agent, a suspending agent, a thickening agent,calcium hydroxide, fly ash and water. Meanwhile, the invention also discloses a preparation method of the lightweight concrete. The invention also discloses a construction method of nonbearing wall casting in situ by using the lightweight concrete. The construction method comprises the steps as follows: 1) mounting constructional columns in a preset nonbearing wall position; 2) embedding water pipes and electric wires; 3) mounting nonbearing wall formworks; 4) casting the lightweight concrete into the formworks; 5) 24 h after casting, removing the formworks; 6) curing and arranging the wall.The lightweight concrete has the characteristics of lightweight, high strength and low cost and has good economical, social and environmental protection benefits.

The invention provides a five-in-one functional facing shaving board and a preparing method thereof, and belongs to the technical field of shaving board production. The shaving board can have the functions that left formaldehyde pollution is avoided, negative ions can be released, sterilization is effective, radiation is prevented, damp and wet are prevented, and fire preventing and inflaming retarding are achieved at the same time, and tested indexes are stable. The five-in-one functional facing shaving board is composed of a three-in-one functional shaving board and a composite nano decoration film layer, and the composite nano decoration film layer is attached to one or two sides of the functional shaving board. The preparing method can be applied to manufacturing of the five-in-one functional facing shaving board, and the market requirements can be effectively met.

The invention discloses a moving workpiece automatic spraying robot system based on machine vision. The moving workpiece automatic spraying robot system comprises an area source vision acquisition device for acquiring feature information such as shape, size, position and posture of a to-be-sprayed workpiece through a vision image, an autorotation type hook guide rail capable of conveying the to-be-sprayed workpiece to a spraying working area and enabling the workpiece to autorotate at a constant speed after the workpiece enters the working area, a parameter-controllable air pressure type paintsupply system for spraying paint and providing dynamic spraying control parameters, a spraying robot used for executing a specific spraying action on the workpiece, and visual man-machine interactionequipment for providing a man-machine interaction interface to control the working mode and the working state of the spraying robot system and displaying the real-time working state and the working condition parameters of the system. The automatic spraying robot system is controlled through interactive interface input, a customized spraying scheme is generated for different workpieces through themachine vision technology, misoperation of manual control is avoided, operation is convenient, action is sensitive, and control is accurate.

The invention discloses a plasma-synergized photocatalytic purification device and a plasma-synergized photocatalytic purification method. The plasma-synergized photocatalytic purification device comprises a box body, a filter layer, a plasma layer and a photochemical layer, wherein a passage communicated with the two ends of the box body is formed inside the box body; the filter layer, the plasma layer and the photochemical layer are sequentially fixed into the passage; the photochemical layer comprises an UV optical layer and a catalyst layer; the UV optical layer is positioned on one side, facing the filter layer, of the photochemical layer; the catalyst layer is positioned on one side, back from the filter layer, of the photochemical layer. The plasma-synergized photocatalytic purification device has the advantages and beneficial effects as follows: the plasma-synergized photocatalytic purification device is simple in structure and low in using cost, and can greatly reduce or even completely eliminate organic pollutants in waste gas emitted in a factory and discharge water and carbon dioxide which are harmless to the environment, so that the environmental protection level of the factory is improved, the environment around the factory is avoided from being damaged by the organic pollutants, and the body health of residents around the factory is protected.

This invention relates to a method for adding bag-ash to blast sprayed coal characterizing in adding 2-8% weight percentage of bag-ash into the sprayed coal powder, and the volume keeps at 4% when the oxygen enrichment rate is less than 3% and increase along with the increase of the wind temperature is over 1150deg.C, 2% bag-ash is increased and the oxygen enrichment rate should increase 1%. The carbon in the ash can be used circularly in the oven and the iron oxide in the ash can increase the burning rate of coal powder, in addition to that, the ash can increase the gas permeability during sintering and reduce the circulation of fine dust in the sintering.