33results about How to "Eliminate pollution hazards" patented technology

An improved dry heat method and apparatus for thawing frozen biological fluids utilizing electrically heated plates and oscillatory motion to enhance heat transfer by mixing as the fluid thaws. Bags of frozen fluid to be thawed are lightly squeezed between two heating plates, one of which is gently oscillated to facilitate mixing of the thawing fluid, increasing heat transfer and reducing time required for thawing. Direct contact of the heating plates against the bag surfaces increases heat transfer by eliminating insulative effects of another bag wall and a water boundary layer, compared to water bath units. Flat (or curved to conform to bag) heat pipes are preferred as heating plates compared to plain aluminum sheet. Flat heat pipes have the property of an isothermal heating surface, thus maximizing heat transfer to the coldest areas, preventing hot spots, and simplifying heating plate temperature control.

The invention relates to a multi-grade gold-solver-copper-zinc enriching and comprehensive recovering method for cyanide gold refining waste residues. The multi-grade gold-solver-copper-zinc enriching and comprehensive recovering method for the cyanide gold refining waste residues comprises the following steps that the first grade is a technology that decyanation is conducted after mixing cyanide gold refining waste residues, high-temperature hot residues generated by roasting acid-making and purifying warm dilute acid slurry mixing; the second grade is a gold-solver-sulfur-concentrate floating-selecting and enriching technology by using high efficiency mixing activator and floating agents; the third grade is a technology for iron ore concentrate generated through floating-selecting tailing magnetic-separation; the fourth grade is a technology for producing the iron ore concentrate by floating-selecting gold-solver-sulfur-concentrate, high-temperature roasting acid-making and enriching gold-solver-iron; the fifth grade is a wet-process gold-silver leaching technology for the iron ore concentrate by using environmental protection agents; the sixth grade is a precipitating enriching technology for gold and silver in leaching liquid; and the seventh grade is a comprehensive precipitating recovering recycling technology for copper and zinc in the leaching liquid after gold-silver extraction. According to the multi-grade gold-solver-copper-zinc enriching and comprehensive recovering method for the cyanide gold refining waste residues, the pollution and damages of the cyanide gold refining waste residues on surround environment are removed, through the multi-grade enriching technology, gold, solver, copper and zinc in the cyanide gold refining waste residues can be recovered comprehensively and integratedly, and the objectives of comprehensive processing and recovering, cyclic utilization and economic and environmental protection can be achieved.

The invention discloses a universal microorganism bacterial agent which is characterized by comprising one or more of bacillus, pseudomonas, composite azotobacter, photosynthetic bacteria, yeast, fusarium oxysporum, actinomycetes, potassium bacteria, phosphate solubilizing bacteria, bifidobacterium, lactic acid bacteria, the bacteria are activated, and meanwhile, the viable count of the bacteria is not less than 10<8> / ml, and the infectious microbe rate is not greater than 3%. According to different applications and characteristics of the bacteria, special proportion and activation are adopted for different amounts for composite culture so as to make the agent into different special dosage forms, functions and effects of single aspect are highlighted, non-leguminous crops are enabled to have the nitrogen fixation function, the functions in cultivation, breeding, environment-friendliness, mariculture, biological preservation and the like are outstanding, and the agent has important significance in prompting animal and vegetable growth, improving product quality, improving product mass, eliminating public environment pollution and the like.

The invention discloses an air purifying product and method, which comprises the following steps: adopting fiber of immersed formaldehyde eliminator to polymerize or decompose formaldehyde; using strong adsorbing material to adsorb other harmful gas. The product is composed of decomposing layer as outer layer made of fiber material and active material as inner part with strong adsorbing ability and drug liquid in the fiber to decompose and eliminate harmful gas.

The invention discloses an environment restoring method for manufacturing an ecological crust by adopting anaerobic digestion residuals. The method comprises the following steps of: 1) obtaining a substrate: performing solid-liquid separation on the anaerobic digestion residuals by utilizing a solid-liquid separation device to obtain biogas residues; 2) adjusting the substrate: adding auxiliary materials, such as medical stone and water-retaining agent, into the biogas residues, and mixing uniformly; 3) forming the crust: placing the materials into a mould and pressing into the crust; and 4) outdoor paving: placing seeds into a seedling culture cave of the crust, placing the crust into different vertical habitats according to environmental condition to enable the seeds to automatically sprout and grow, and with the growth of the seedling and the weathering of the crust, integrating the plant, crust and soil into a whole. The method provided by the invention has the advantages of simpleness and easiness in operation, convenience in operation, environment-friendly property, and resource-saving property, and is suitable for the control of desertification and the restoring, rebuilding and improving practice of local ecology.

The invention relates to a method for treating alkaline gold-extraction tailings by utilizing acid making tail gas. The method is simple and fast in process flow, fully utilizes the acid making tail gas and alkaline gold-extraction tailings to change wastes into valuables, the problems that the acid making tail gas is purified and absorbed and the alkali liquor neutralizing treatment cost is high can be solved, the purpose of standard emission can be achieved, furthermore gold and silver valuable metals in the alkaline gold-extraction tailings can be recovered, the pollution hazard of the alkaline gold-extraction tailings to the ambient environment can be eliminated to achieve energy conservation, economy and environment friendliness, and the economic benefits of enterprises can be improved.

The invention relates to a method for treating cyanidation tailing solidified dry heaping by using waste acid. The process flow is simple, and waste acids (diluted acids) generated in acid production through flue gas calcination react with cyanidation tailings. Cyanidation tailings treated through the method make the waste acids generated in acid production be further applied, acidolysis and floatation technologies comprehensively recover valuable metals gold, silver and copper and eliminate harms of cyanides in the cyanidation tailings, a high temperature calcination technology comprehensively utilizes neutral residues generated in the acid production waste acid neutralization treatment, and calcination products are solidified pellets, and can be directly transported to a stacking place and are rolled and filled, so pollution harms to surrounding environment are eliminated, the purposes of energy saving, economic property and environmental protection are reached, and the economic benefit of enterprises is improved.

The transformer and reactor includes coiled core, annular skeleton and windings, the coiled core is wound in the cavity of annular skeleton, the windings are wound around the annular skeleton, and the annular skeleton comprises at least two sections, in at least one of which has holes for threading the core sheets. During the making, the coiled core and the windings are mounted through the following steps: winding on the skeleton without holes to form prefabricated windings; assembling the skeleton with winding and skeleton with holes to constitute annular skeleton; threading iron core sheets via the holes or slots inside the cavity of the annular skeleton to constitute the coiled core; and final forming the windings on the skeleton. The manufacture and test process is much simpler than that of conventional transformer and reactor, and the present invention can shorten greatly the production period and raise the voltage withstanding grade of non-soaked transformer and reactor.

The invention discloses a high-chromium cast iron grinding ball and a heat treatment method thereof, belonging to the field of cast iron heat treatment technology, and solves the problems of unstable cooling mode, pollution, danger, etc. in the heat treatment process of the existing high-chromium cast iron grinding ball. A heat treatment method for high chromium cast iron grinding balls of the present invention comprises the following steps: S1. pretreatment; heat preservation at 600-890°C for 2-10 hours; S2. quenching treatment, heating to 880-1100°C, heat preservation for 3-6 hours hours, put it into the cooling medium for immersion time t, cool to 150-350°C, take it out from the quenching medium, put it in the air and cool slowly to room temperature; S3. Tempering treatment, after heating to 200-530°C, Cool to room temperature. The invention can provide a high-quality high-chromium cast iron grinding ball, and has the advantages of safety and environmental protection.

The invention discloses a non-asbestos high-temperature-resistant clutch surface patch and a manufacturing method thereof. The non-asbestos high-temperature-resistant clutch surface patch is prepared from the following raw materials in parts by weight: 25-35 parts of modified fibers, 6-8 parts of copper fibers, 3-5 parts of aramid fibers, 20-30 parts of acrylonitrile-butadiene rubber, 10-20 parts of phenolic resin, 2-4 parts of a vulcanizing agent, 3-5 parts of an anti-ageing agent, 10-14 parts of graphite, 8-12 parts of barite powder, 6-8 parts of nano silicon dioxide and 3-5 parts of nano titanium dioxide. The non-asbestos high-temperature-resistant clutch surface patch disclosed by the invention does not contain asbestos, and eliminates contamination hazard of the asbestos; and moreover, high temperature resistance is excellent, a friction coefficient is not obviously reduced under a high-temperature condition, and abrasion is relatively low.

The invention discloses a blade spring composite cover plate. The blade spring composite cover plate comprises frameworks, the upper end surfaces of the frameworks are matched with an inner bend section of a U-shaped bolt, the frameworks are arranged in a matrix made of a fiber-reinforced polymer material and are made of a metal material, the lower end surfaces of the frameworks are flush with thelower end surface of the matrix, and the upper end surfaces of the frameworks are exposed out of the surface of the matrix. According to the blade spring composite cover plate, the upper surfaces ofthe frameworks are matched with the inner bend section of the U-shaped bolt and transmit the vertical static / dynamic load from the U-shaped bolt, the load borne by the upper surfaces of the frameworksare jointly borne by the frameworks and the matrix in the cover plate, the frameworks adopt the metal material, so that high structural strength and rigidity can be ensured, the matrix adopts the fiber-reinforced polymer material, the elastic modulus is small, the specific strength is high, and the effects of buffering and dispersing the load are obvious; and moreover, the high polymer material is light in weight, the weight reduction rate of the overall composite cover plate compared with that of a traditional cast iron blade spring cover plate is greater than or equal to 50%, and the lightweight design can be realized.

The invention discloses a pulse rising type system for continuously recovering mercury from mine tailings. The system comprises a slurry preparation unit, a rising extraction unit, a flocculation separation unit and a solvent regeneration unit. The invention further comprises a pulse rising type process for continuously recovering the mercury from the mine tailings. The process comprises the following steps of slurry preparation, rising extraction, flocculation separation and solvent regeneration. According to the pulse rising type system and process for continuously recovering the mercury from the mine tailings, the pulse rising type system for continuously recovering the mercury from the mine tailings adopts a riser reactor for liquid-solid extraction for the first time, the riser reactor is composed of thick sections and fine sections in a staggered mode, so that the material backmixing degree is greatly enhanced, due to the fact that a baffle plate is arranged inside the riser reactor, the staying time is prolonged, the extraction is more thorough, the extraction efficiency is higher, and the pollution hazard of the mercury in the mercury-containing tailings to the environmentis greatly reduced; and a sodium thiosulfate solution for extracting the mercury is subjected to heating and bubbling of carbon dioxide, so that decomposition is enhanced, and thiosulfate after mercury decomposition is converted into a mercury sulfide precipitation form which is low in solubility, high in stability and low in toxicity.

The present invention is applicable to the textile field, and provides a hot-melt non-adhesive nylon Velcro and its manufacturing method. Melt at a high temperature and make the adjacent nylon filaments bond together. By adopting this structure of the hook and loop fastener, it can not only achieve the purpose of no burr when cutting, and no loosening during use, but also does not need to coat the bottom of the hook and loop fastener Polyurethane resin glue technology avoids the harm of environmental pollution caused by the volatilization of organic solvents into the air during drying, and realizes that the hook and loop fastener is breathable and thin, and there is no problem of hydrolysis of the glue when used in water.

The invention relates to a smell-removing and perfuming machine which is energy-saving, environmentally-friendly and pollution-free. The smell-removing and perfuming machine comprises a smell-removingand perfuming machine shell, a sealing door, a pressure-maintaining purifying chamber, a vacuum pump, a vacuum pump motor, and a purifier or a perfuming device. The sealing door is arranged on the smell-removing and perfuming machine shell via a connecting device; the pressure-maintaining purifying chamber is arranged on the inner side of the smell-removing and perfuming machine shell; the sealing door and the pressure-maintaining purifying chamber form low-pressure or vacuum seal fit; the pressure-maintaining purifying chamber is provided with the vacuum pump; the outer side of the vacuum pump leads to external air via a valve and a pipe. Purifying or perfuming is performed in a low-pressure or vacuum state, so that effective constituents can infiltrate into clothes deeply.

The invention relates to a method for treating alkaline gold-extraction tailings by utilizing acid making tail gas. The method is simple and fast in process flow, fully utilizes the acid making tail gas and alkaline gold-extraction tailings to change wastes into valuables, the problems that the acid making tail gas is purified and absorbed and the alkali liquor neutralizing treatment cost is high can be solved, the purpose of standard emission can be achieved, furthermore gold and silver valuable metals in the alkaline gold-extraction tailings can be recovered, the pollution hazard of the alkaline gold-extraction tailings to the ambient environment can be eliminated to achieve energy conservation, economy and environment friendliness, and the economic benefits of enterprises can be improved.

The invention discloses safe high efficiency complex type anti-fungicide paper and its manufacturing method. It is used the common kraft as base paper. One surface of the base paper is painted or spayed one layer complex type anti-fungus agent formed by o-phenyl phenyl phenol, benzoic acid, nipalgin propyl ester, and sorbic acid. The complex type anti-fungus agent layer is painted one layer complex type adhesion agent contained anti-fungus agent propionic acid, carbendazim, and vitamin E or C, and antioxidant complex type adhesion agent. The manufacturing method includes the following steps: selecting base paper; preparing and painting and spraying complex type anti-fungus; preparing and painting and spraying complex type adhesion agent. The anti-fungicide paper is no odor and peculiar smell, not influenced by environment, and no harm for people and animal. It can be applied to mould proofing of tobacco and its products, foods, forage, and so on.

The invention relates to a method for treating cyanidation tailing solidified dry heaping by using waste acid. The process flow is simple, and waste acids (diluted acids) generated in acid production through flue gas calcination react with cyanidation tailings. Cyanidation tailings treated through the method make the waste acids generated in acid production be further applied, acidolysis and floatation technologies comprehensively recover valuable metals gold, silver and copper and eliminate harms of cyanides in the cyanidation tailings, a high temperature calcination technology comprehensively utilizes neutral residues generated in the acid production waste acid neutralization treatment, and calcination products are solidified pellets, and can be directly transported to a stacking place and are rolled and filled, so pollution harms to surrounding environment are eliminated, the purposes of energy saving, economic property and environmental protection are reached, and the economic benefit of enterprises is improved.

The invention discloses a non-asbestos high-temperature-resistant clutch surface patch and a manufacturing method thereof. The non-asbestos high-temperature-resistant clutch surface patch is prepared from the following raw materials in parts by weight: 25-35 parts of modified fibers, 6-8 parts of copper fibers, 3-5 parts of aramid fibers, 20-30 parts of acrylonitrile-butadiene rubber, 10-20 parts of phenolic resin, 2-4 parts of a vulcanizing agent, 3-5 parts of an anti-ageing agent, 10-14 parts of graphite, 8-12 parts of barite powder, 6-8 parts of nano silicon dioxide and 3-5 parts of nano titanium dioxide. The non-asbestos high-temperature-resistant clutch surface patch disclosed by the invention does not contain asbestos, and eliminates contamination hazard of the asbestos; and moreover, high temperature resistance is excellent, a friction coefficient is not obviously reduced under a high-temperature condition, and abrasion is relatively low.

The invention relates to a method for comprehensively recovering gold mud wet technology tail gas, and belongs to the technical field of the treatment, the comprehensive utilization and the gold and silver recovery of the smelting exhaust-gas in the wet gold smelting industry. The method adopts the steps of gold mud preparation, gold mud acid dipping, tail gas absorption, carbon adsorption, and carbon-adsorbed liquid comprehensive utilization to recover the valuable elements of gold, silver and the like in the gold mud wet technology tail gas, and an alkaline circulating waste liquid obtained after the adsorption recovery of the gold and silver by active carbon is directly used for a cyanidated tail residue flotation lead enriching technology as a lead system selecting liquid to further recover other elements comprising lead and the like, so the pollution harms of the alkaline circulating waste liquid to the surrounding environment are eliminated, and the purposes of energy saving, economy, environmental protection and effective comprehensive control are realized.

The invention relates to a variable-pressure washing machine. The variable-pressure washing machine comprises a variable-pressure washing machine shell, a sealing door, a washing chamber, a motor, a high-low pressure device and a safety valve, wherein the high-low pressure device is arranged on a pressure-resistant shell on the inner side of the variable-pressure washing machine shell; the outer side of the high-low pressure device is connected to the external atmosphere through a valve and a pipeline respectively; the variable-pressure washing machine washes clothes in a mode of intensively decomposing and separating dirt and oil dirt on the clothes in a low-pressure environment of which the pressure is lower than the atmospheric environment pressure in the washing chamber, or washes theclothes by permeating into the dirt and the oil dirt on the clothes in a mode of dissolving and strongly permeating in a high-pressure environment of which the pressure is higher than the atmosphericenvironment pressure, or washes the clothes in the washing chamber of which the low pressure, the normal pressure and the high pressure are changed circularly, so that water and detergent are saved, and the environment is protected.

The invention discloses an environment restoring method for manufacturing an ecological crust by adopting anaerobic digestion residuals. The method comprises the following steps of: 1) obtaining a substrate: performing solid-liquid separation on the anaerobic digestion residuals by utilizing a solid-liquid separation device to obtain biogas residues; 2) adjusting the substrate: adding auxiliary materials, such as medical stone and water-retaining agent, into the biogas residues, and mixing uniformly; 3) forming the crust: placing the materials into a mould and pressing into the crust; and 4) outdoor paving: placing seeds into a seedling culture cave of the crust, placing the crust into different vertical habitats according to environmental condition to enable the seeds to automatically sprout and grow, and with the growth of the seedling and the weathering of the crust, integrating the plant, crust and soil into a whole. The method provided by the invention has the advantages of simpleness and easiness in operation, convenience in operation, environment-friendly property, and resource-saving property, and is suitable for the control of desertification and the restoring, rebuilding and improving practice of local ecology.

The present invention relates to a medical protection article, and especially relates to an anti-radiation surgical gown. The anti-radiation surgical gown has a right side and a back side; the right side has a left half and a right half; the left half shields the right half to form an overlap area; the left half and the right half are internally equipped with lead rubber; a fiber mesh is attached to the exterior of the lead rubber; and the fiber mesh is equipped with an adhesive port. The airtight fiber mesh is adopted by the anti-radiation surgical gown to enclose the lead rubber and prevent communication with the outside, hidden danger of lead pollution is completely eradicated, a wearer can be completely kept clear of the lead rubber, and safety and practicality of the anti-radiation surgical gown are embodied.

The invention provides a treatment method for arsenical waste liquid, which comprises the following steps: (A) performing sulfurization treatment of arsenical waste liquid to obtain arsenic-sulfur-copper mixed slag; (B) performing concentrated sulfuric acid oxidation treatment of the arsenic-sulfur-copper mixed slag to obtain sulfur precipitate and mother liquid; (C) recycling the sulfur precipitate to prepare concentrated sulfuric acid and / or a sulfurization agent, performing crystallization treatment of the mother liquid to separate out arsenic oxide, and continuing to perform purification treatment of arsenic oxide; and (D) enabling the mother liquid subjected to crystallization treatment to circulate back to step (A) to be mixed with arsenical waste liquid repeatedly, and directly extracting elemental copper from the mother liquid when the copper element enrichment concentration in the mother liquid is up to 100-120 g / L. The treatment method for arsenical waste liquid, provided by the embodiment of the invention, is simple, is easy to operate has mild operation conditions, realizes safe and innocent treatment of arsenic pollution, can recycle elemental metal from waste liquid and creates a certain economic value.

The invention relates to a footwear foot-caring machine, which comprises a footwear foot-caring machine shell, a sealing door, a pressure retaining box, a decompression pump, a motor, a booster pump,a motor, a booster valve, a reducing valve or a drainage valve, a safety valve, a washing liquid bottle or a washing gas bottle or a decomposing liquid bottle, wherein the pressure retaining box is arranged at the inner side of the footwear foot-caring machine shell; the sealing door and the pressure retaining box keep low-pressure or vacuum-seal cooperation; the decompression pump is arranged onthe pressure retaining box; the decompression pump is connected to external atmosphere via the valve and a pipeline; footwear, which is to be washed, is firstly placed into the pressure retaining boxand the sealing door is closed, a low-pressure or vacuum-seal space is defined by the sealing door and the pressure retaining box, and a start key on a keyboard is pressed down.

The invention discloses a method and a device for cultivating high-concentration photosynthetic bacteria with low illumination. The device comprises an anode chamber and a cathode chamber, wherein the anode chamber is made from a transparent material, and is separated from the cathode chamber through an ion exchange membrane; the anode chamber and the cathode chamber are respectively provided with an anode and a cathode; the anode and the cathode are connected through an external resistor; the ratio of surface area of the anode to effective capacity of the anode chamber is more than 0.06 / cm, and ratio of resistance of the external resistor to effective capacity of the anode chamber is 4-40 ohm / cm3; the anode chamber of the device is a fermentation tank; photosynthetic bacteria cultivated to a logarithmic phase are inoculated to the anode chamber at a volume percentage of 1-10%, and the anode chamber is sealed and is communicated to an external circuit to cultivate the bacteria at 20-37 DEG C with illumination of 50-500lux. The method disclosed by the invention can cultivate high-concentration photosynthetic bacteria under low inoculum size and low illumination, and can generate electric energy while reducing illumination energy consumption; and the method is wide in application prospect.

The invention relates to a footwear foot-care machine. The footwear foot-care machine comprises a footwear foot-care machine shell, a sealing door and a pressure-resistant shell, the footwear chamber,the motor, the high-low pressure device and the safety valve are arranged, the high-low pressure device is arranged on the pressure-resistant shell on the inner side of the footwear foot-care machineshell, the sealed footwear chamber is arranged on the footwear foot-care machine, and sweat stain odor on footwear is decomposed and separated in the footwear chamber in a reinforced mode through lowair pressure in the footwear chamber, or the footwear foot-care machine is provided with a closed footwear chamber, and detergent or perfume or medicine is strongly permeated into the footwear in thefootwear chamber at the high air pressure higher than the atmospheric environment air pressure in the footwear chamber; or the footwear foot care machine treats the footwear in a high-air-pressure, normal-pressure and low-air-pressure cyclic change mode that decomposition and separation of low air pressure lower than the atmospheric environment air pressure and high air pressure higher than the atmospheric environment air pressure enhance the strong permeation of the footwear agent into sweat stains and foul smells on the footwear.

The invention discloses a pulse rising type system for continuously recovering mercury from mine tailings. The system comprises a slurry preparation unit, a rising extraction unit, a flocculation separation unit and a solvent regeneration unit. The invention further comprises a pulse rising type process for continuously recovering the mercury from the mine tailings. The process comprises the following steps of slurry preparation, rising extraction, flocculation separation and solvent regeneration. According to the pulse rising type system and process for continuously recovering the mercury from the mine tailings, the pulse rising type system for continuously recovering the mercury from the mine tailings adopts a riser reactor for liquid-solid extraction for the first time, the riser reactor is composed of thick sections and fine sections in a staggered mode, so that the material backmixing degree is greatly enhanced, due to the fact that a baffle plate is arranged inside the riser reactor, the staying time is prolonged, the extraction is more thorough, the extraction efficiency is higher, and the pollution hazard of the mercury in the mercury-containing tailings to the environmentis greatly reduced; and a sodium thiosulfate solution for extracting the mercury is subjected to heating and bubbling of carbon dioxide, so that decomposition is enhanced, and thiosulfate after mercury decomposition is converted into a mercury sulfide precipitation form which is low in solubility, high in stability and low in toxicity.

The invention relates to a method and product for purifying air, which is a method and product combining a chemical method and a physical method for eliminating harmful chemical gases. Formaldehyde and other toxic gases, and products developed based on this method. Purification step: the step of polymerizing or decomposing formaldehyde by using cellulose impregnated with formaldehyde remover; the step of absorbing other harmful gases by using the substance with adsorption ability. The product for air purification is: the outer layer is a decomposing layer of fibrous material, the inner layer is a chemical package of active substances with adsorption capacity, and the fibrous material contains liquid medicine for decomposing and eliminating harmful gases. The invention utilizes the adsorption force of activated carbon to adsorb harmful substances in the air into the bag. When the formaldehyde in the air passes through the decomposition layer, the pharmaceutical components of the decomposition layer rapidly decompose or polymerize it, while the activated carbon adsorbs other harmful gases.

The invention relates to a smell-removal perfuming machine. The perfuming machine is composed of high and low pressure circulating systems of a pressurizing system and a depressurizing system; the pressurizing system is composed of a booster pump, a booster pump motor, a pressure increasing valve and a pipeline; the depressurizing system is composed of a depressurizing pump, a depressurizing pumpmotor, a depressurizing valve and a pipeline; toxic and harmful substances and pathogenic bacteria are dissolved through pressurizing of the pressurizing pump, gas is pumped out through the depressurizing pump or a vacuum pump and discharged into the external atmosphere, atomized through liquid in a purifying liquid bottle or a purifying gas bottle or linked with a pressure-keeping perfuming chamber through a valve or a pipeline, and discharged, and then the gas permeates into clothes.