67results about How to "Guarantee Occupational Health" patented technology

The invention provides a method for preparing germanium dioxide (GeO2). According to the embodiment of the invention, the method comprises the following steps: hydrolyzing the germanium tetrachloride(GeCl4) in a fully-closed hydrolysis reactor to obtain the hydrolysis product of the GeCl4, centrifuging and filtering the hydrolysis product of the GeCl4 to obtain the GeO2 and the filtrate, and cleaning the GeO2 by high-purity water to obtain the high-purity GeO2 and the cleaning solution. According to the embodiment of the invention, the GeO2 hydrolyzing, filtrating and washing method and device have the advantages of high degree of automation, high GeO2 hydrolysis yield, good solid-liquid centrifugal separation effect, low production costs, less metal loss and environment friendliness.

The invention relates to a building foundation impermeable membrane connecting device and a building foundation impermeable membrane connecting method, which are suitable for engineering construction of hydraulic engineering dams, reservoir dams, channels, ponds and the like so as to meet impermeable functional requirements, the tensile strength between new membranes as well as between a new membrane and an old membrane in an impermeable system can be effectively guaranteed, and the impermeable requirements are satisfied. The connecting device comprises inner pipes and outer pipes, wherein insertion openings are axially formed in pipe bodies of the inner pipes, bayonets are axially formed in pipe bodies of the outer pipes, and the outer pipes are clamped on the upper surfaces of impermeable membrane coiling layers which are wrapped outside the inner pipes, so that impermeable membranes I and impermeable membranes II which are used by two building foundations are connected together segment by segment, and the outer pipes as well as the inner pipes are abutted one by one. According to the building foundation impermeable membrane connecting device and the building foundation impermeable membrane connecting method, the leakage problem of the connecting positions of the impermeable membranes is solved, the impermeable purpose is achieved, and the engineering quality is effectively increased.

The invention discloses a shallow-buried large-span water conveying tunnel three-stage five-step digging method which comprises the steps of 1) first-step digging, namely performing forepoling on an upper half tunnel, and digging an upper stage; 2) second-step digging, namely digging a pull trough in the middle of the tunnel; 3) third-step digging, namely digging and supporting the left wall of the tunnel; 4) fourth-step digging, namely digging and supporting the right wall of the tunnel; and 5) fifth-step digging, namely digging and supporting the edge wall of a lower stage. By adopting the digging method, region-by-region digging is effectively executed, overlapping of spaces and time of working procedures are fully used, the digging time periods of the working procedures are rationally used, and the deformation in the tunnel is reduced; and a lining can be quickly closed to form a ring. By adopting the digging method, the digging safety risk is effectively reduced, the digging working efficiency is improved, the digging and supporting closing time is shortened, and the deformation in the tunnel is effectively reduced.

Disclosed is a technology for cleanly and efficiently processing lead-bearing waste residues. The lead-bearing waste residues produced by lead smelting and lime are matched according to the mass ratioof 1:0.03-0.07 and are then pressed into blocky lead-bearing residue blocks, and after natural drying, by mass, 7%-15% of coke, 9%-11% of silica and 74%-84% of the lead-bearing residue blocks are matched. Materials are sequentially added into a five-section integrated type smelting furnace, ignition blowing-in is conducted for oxygen-enriched intensified smelting, materials added from a smeltingfurnace feeding section (1) pass through a preheating section (2), a sintering section (3), a half-melting section (4), a smelting section (5) and a layering section (6), and the smelting process of the materials is completed. Through the technology, material preheating, sintering, smelting and clarification laying are integrated, heavy metal, valuable metal, gangue and the like are selectively separated well, dangerous waste is processed cleanly and efficiently, and the technology has the advantages that the process is short, operation is simple and convenient, and investment is small.

The invention discloses an environment-friendly flame-retardant scaffold system. The environment-friendly flame-retardant scaffold system sequentially comprises a plurality of scaffold board rows, a ramp scaffold board and a perforated dustproof safety net from bottom to top, and the perforated dustproof safety net is arranged on one side of a scaffold. The environment-friendly flame-retardant scaffold system is characterized in that the first row of scaffold boards in the bottom layer is steel scaffold boards, steel screen scaffold boards are adopted for layering and separation of the scaffold, each two adjacent steel scaffold boards are connected through a fixing part, and each two adjacent steel screen scaffold boards are connected by a fixing part. By the aid of the scaffold system, dangerousness of construction is lowered, fire accidents can be avoided, occupational health of operators is guaranteed, and accordingly environmental friendliness requirements of environmental friendliness, dust prevention, noise prevention of construction sites are met, and adverse impact on surrounding environments is reduced.

The invention discloses a naphthalene tail gas recycling system which comprises a naphthalene tank body and a naphthalene collector. The top of the naphthalene tank body is provided with a naphthalene ventilation hole, the top of the naphthalene collector is provided with an air inlet and an air outlet, the naphthalene ventilation hole is communicated with the air inlet through a pipe, and an induced draft fan is installed at the position of the air outlet. The naphthalene tail gas recycling system further comprises a pipeline connected with loading vehicle tail gas, the pipeline is connected with the pipe, the tail gas discharged out of the naphthalene ventilation hole and a loading vehicle is introduced to the naphthalene collector through the induced draft fan and the pipe to be recycled, the naphthalene collector comprises a collecting device and a water tank, a grid partition is arranged in the collecting device, a spraying pipe for water curtain cooling is installed at the top of the grid partition, the tail gas in the collecting device is cooled through spraying water, and naphthalene particles in the gas are cooled and fall to the water tank below with the stream to be recycled. The naphthalene tail gas recycling system has the advantages that thermal energy consumption and material loss are reduced, physical health of operators is guaranteed, the atmospheric environment is protected, and large economic loss is reduced for enterprises engaged in naphthalene tank transfer operations.

The invention discloses a design method of a precast concrete component environment-friendly intelligent production system. The precast concrete component environment-friendly intelligent production system comprises a totally-enclosed sandstone aggregate storage and transportation system, a totally-enclosed concrete mixing and conveying system, an integrated sandstone separation and filter pressing workshop, an environment-friendly standard-reaching reinforcement cage processing workshop, an environment-friendly standard-reaching prefabricated part pouring and forming workshop, an intelligentsteam curing system, an intelligent water curing system, an intelligent finished product stacking, storing and shipping system, an informatization and intelligence management system and a production ancillary facility system. A highly-integrated, intelligent, systematic and environment-friendly precast concrete component production factory-like comprehensive solution and a design method based on the solution are provided; and the processes that comprehensive treatment is carried out on pollution sources such as noise, dust, solid waste and waste water are included, technologies such as the Internet of Things, big data and cloud computing are fused, technical means such as an application programming interface (API) are utilized, environmental protection is achieved, secondary utilization ofall materials is achieved, and the recycle environment-friendly requirement is met.

The invention discloses a manual pipe jacking construction process, and belongs to the technical field of pipe jacking construction. The manual pipe jacking construction process comprises the following steps that S1, construction water and electricity, channels, drainage and lighting equipment are installed, maintenance fences are installed around a working well, and a ladder stand is installed in the working well; and S2, a debugged pipe jacking machine is hoisted into the working well, the pipe jacking machine is placed on a guide rail coated with lubricating oil for accurate positioning, an oil pump is started, a jack is stretched and retracted, and the jack is adjusted until the jack and the back wall meet the jacking requirement. According to the manual pipe jacking construction process, before the construction process, construction preparation is carried out, and during construction, a laser instrument is adopted for measuring the advancing trend of a jacking pipe, so that deviation measurement is carried out, deviation correction can be carried out in time, the quality of a constructed pipeline is improved, and the construction progress is guaranteed; and slag is discharged through a manual trolley, so that soil in the pipeline can be conveniently removed, and harmful gas and dust in the pipeline are discharged, so that the occupational health of workers is ensured.

The invention discloses a mobile blowing-sucking type modular dust removal system. The mobile blowing-sucking type modular dust removal system is characterized by comprising at least one set of mobileblowing-sucking type modular dust removal devices, an up-and-down synchronous moving type travelling crane assembly and a pulsating intelligent central control system, wherein the two blowing-suckingtype modular dust removal devices in one set are arranged up and down and communicate with each other, the up-and-down synchronous moving type travelling crane assembly enables the two correspondingmobile blowing-sucking type modular dust removal devices to keep at one horizontal position all the time, and the pulsating intelligent central control system is used for controlling the up-and-down synchronous moving type travelling crane assembly and the mobile blowing-sucking type modular dust removal devices. According to the system, mobile travelling cranes are arranged at the up and down positions at certain heights of a workshop, the two dust removal devices arranged up and down are moved synchronously in a blowing-sucking type to conduct fixed-point fixed-zone dust removal on the large-space workshop, and the dust diffusion range of a dust source point is reduced. The mobile blowing-sucking type modular dust removal system can be matched with the dust removal amount to achieve modular production, when the dust removal devices are damaged or a filter device needs to be replaced, the whole can be replaced, modularized production is realized, the plant downtime is reduced, and theoccupational health of skilled workers is guaranteed.

An intelligent and efficient dust collection workbench for grinding the two ends of a large workpiece, comprising an operation area, a feeding area and a discharging area. The operation area is used for grinding the two ends of the workpiece; the feeding area and the discharging area are used for storing large work before and after grinding, respectively; a supporting platform for large workpieces is arranged in the middle of the workbench, and downward-concave L-shaped exhaust outlets are formed in the left side and the right side of the workbench; a L-shaped air outlet is connected with a dust collecting bin and used for collecting large-particle grinding dust; a rectification structure of an L-shaped air outlet is arranged in the workbench; the workbench is connected with a dust remover through an air pipe, and dusty gas is purified by the dust remover and then emptied; an infrared detector is arranged on the workbench, and intelligent control over air exhaust is achieved according to whether a worker is detected or not. The workbench can reduce the dust concentration of a respiratory zone of a worker to 0.4 mg/m3, and the dust collecting efficiency is 98.43%, so that the working environment is remarkably improved, and the occupational health of the worker is effectively guaranteed.

The invention relates to a cleaning operating solution for stainless steel and iron member composite boards. The cleaning operating solution comprises following components by weight: 11%-17% of a polyoxyethylene alkyl ether, 0.5%-3% of an alkylphenol ethoxylate, 3%-7% of tartaric acid, 8%-13% of a corrosion inhibitor, 7%-13% of hexamethylenetetramine, 2%-8% of a metal complexing agent, 1%-2% of hydrochloric acid, 1%-3% of hydrofluoric acid, 1%-2% of sodium molybdate and 40%-60% of water. The cleaning operating solution is simple and safe to use, and is capable of achieving oil removal, rust removal, sinter removal, oxide-scale removal and dirt removal all at once. The cleaning operating solution has no harm to human bodies or pollution to the environment. The cleaning operating solution can be repeatedly used and added without the need of being heated, is free from irritating smells or harm when contacting skin, thus guaranteeing occupation health of operating workers. The cleaning operating solution is low-carbon, cost-saving and environmental-friendly.

The invention discloses a method and an apparatus for on-line sterilization and moisture adjustment of crude tobacco packers. A moisture detection apparatus detects moisture value of the crude tobaccopackers, according to different moisture values of the detected crude tobacco packers, tobacco packers of different moisture value regions are sorted, tobacco packers of different moisture value regions are respectively treated by a microwave apparatus, in order to effectively adjust moisture of the tobacco packers; the moisture value contents of the tobacco packers accord with storage standards,and hand labor in subsequent processes is reduced; at the same time, the microwave apparatus also can be used for carrying out sterilization treatment, in order to inhibit insect pest generation of stored tobacco packers; microwave sterilization can replace medicament fumigating, in order to avoid damage of medicament on tobacco leaves and pollution of medicament on atmospheric environment, improve working environment of workers, and guarantee occupation health of workers. The apparatus has the advantages of reasonable structure, high automation degree, and good economic benefit; requirementson storage environment of the tobacco packers are substantially reduced, and the technical scheme can be used for effectively reducing cost of enterprise production, improving production environment,and improving production benefit.

The invention discloses a method for removing sulfur trioxide in production of heavy alkyl benzene sulfonic acid, which comprises a removal device and a removal method, and the removal device comprises a first removal unit and a second removal unit which are separated by a separation plate, the first removal unit and the second removal unit are sequentially provided with a feed liquid distribution chamber, a Pall ring packing layer and a liquid storage chamber from top to bottom, an air inlet pipe with a downward pipe orifice is arranged at the upper part in the liquid storage chamber, a flow meter is arranged on the air inlet pipe, the air inlet pipe is connected with a waste heat air pipeline, an exhaust pipe is arranged at the top of the feed liquid distribution chamber, and the exhaust pipe is connected with a tail gas pipeline. According to the invention, the waste hot air which is uniformly distributed upwards is in full contact with the heavy alkyl benzene sulfonic acid feed liquid which is uniformly distributed downwards, and unreacted sulfur trioxide in the feed liquid is blown to the tail gas pipeline through the exhaust pipe, so that excessive sulfur trioxide can be effectively removed, the content of sulfuric acid in the product is controlled, the average deacidification rate is 86.8%, the deacidification efficiency is high and stable, and the quality of the heavy alkyl benzene sulfonic acid can be effectively improved.

The invention relates to a crane single-beam walking wheel forging technology. The forging technology comprises raw material ingredient inspection, raw material metallographic analysis, automatic discharging, automatic feeding, workblank heating, workblank automatic station transformation, first forging and pressing, second forging and pressing, center hole punching, center hole enlarging, mill groove forming, workpiece temperature control and cooling, station transformation, primary machining, digital machine tool finish machining, heat treatment and inspection warehousing. The crane single-beam walking wheel forging technology has the advantages that the quality is high, energy consumption is low, material loss is small, and production efficiency is high.

The invention discloses a low-moisture environment-friendly quenching car for a small coke oven, and an operation process thereof. The coke quenching car comprises a cart, a coke quenching box, a water tank, a water feeding pipe, an atomizing nozzle, a dust removal cover, a dust removal hose, a water feeding pipe connector, a water feeding valve, a water valve switch, a positioning rod, a water feeding pipe water inlet positioning part, a water feeding pipe hose, a water discharging pipe water inlet positioning part, a water discharging pipe hose, a steam outlet, a water discharging valve, a water discharging pipe connector, a water discharging pipe and a water discharging hole, and the coke quenching box and the water tank are arranged on the cart side by side. According to the low-moisture environment-friendly quenching car for the small coke oven, a top quenching and bottom quenching combined wet quenching mode is adopted, the top quenching water amount and the bottom quenching water amount can be independently and accurately adjusted, the coke moisture can be more stably controlled while the quenching time is shortened, and the situation that local moisture is too high is avoided. Steam generated in the coke quenching process is introduced into water for purification and dust removal, the environment is not polluted, and the occupational health of operators can be guaranteed.

Provided is an arsenic-containing waste residue normal temperature wet method innocent treatment process. After arsenic-containing waste residue is subjected to wet type crushing, water is added to the arsenic-containing waste residue under the normal temperature condition to recycle metallic antimony in the arsenic-containing waste residue through solid-liquid separation, arsenic-rich leaching solutions after solid-liquid separation are subjected to arsenic precipitation with concentrated sulfuric acid, biological agents, hydrogen peroxide and lime milk, and up-to-standard discharge of wateris realized after dearsenification. Produced arsenic residue is made into a solidified body by adding crystallization agents to detoxify and then adding curing agents. The toxicity leaching test of the solidified body can reach the toxicity leaching requirement of general solid waste. The process can greatly reduce environmental pollution brought by accumulation of arsenic-containing waste residue, the comprehensive utilization rate of mineral resources is improved, and the recovery rate of valuable metal is high. After production practice of one year, the recovery rate of antimony is verifiedto be stably more than 90%.