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35results about How to "Remove harmful ingredients" patented technology

High-temperature smoke dust removal method and system

The invention discloses a high-temperature smoke dust removal method and system. Before high-temperature smoke is sent into a dust remover, a hardening and tempering agent is added to the smoke to absorb SO3 in the smoke, the dust viscosity is reduced, and meanwhile, agglomeration and coagulation performance of fine particles in the smoke is improved. The adopted system comprises a waste heat boiler, smoke hardening and tempering equipment and an electric bag composite dust remover, wherein the waste heat boiler is connected with a smoke exhaust port of a glass kiln and used for heat exchange and cooling of the high-temperature smoke; a smoke inlet of the electric bag composite dust remover is communicated with the waste heat boiler through a first pipeline; the smoke hardening and tempering equipment is arranged on the first pipeline and used for adding the hardening and tempering agent to the high-temperature smoke in the pipeline; a smoke outlet of the electric bag composite dust remover is connected to a denitration reactor through a fifth pipeline. The hardening and tempering agent is sufficiently mixed with the smoke, dust removal treatment is performed in combination of the electric bag composite dust remover, the dust removal effect is remarkable, and damage of the high-temperature smoke to the dust removal equipment is reduced.
Owner:AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD

Method for volatilizing and removing fluoride from aluminum electrolytic cell waste carbon material

ActiveCN105112938ALow roasting defluorination rateMeets the requirements for electrolytic anode carbon blocksHazardous substanceAdhesive
The invention relates to a method for volatilizing and removing fluoride from an aluminum electrolytic cell waste carbon material and belongs to the technical field of proposal and utilization of hazardous substances produced in the aluminum electrolytic process. The aluminum electrolytic cell waste carbon material containing fluorinated salt is crushed to 0.3-5mm, and an asphalt adhesive occupying one percent by mass of a powder material is added into the powder material which is smaller than 0.3mm so as to prepare 0.5-1mm pellets. The obtained material is introduced into wet air containing water, and is volatilized at 750-1100 DEG C for 1-2h so as to obtain volatile smoke containing fluorinated salt. The volatile smoke containing the fluorinated salt is blown into the air and burnt at 700-1050 DEG C, CO and HCN are thoroughly burnt, the burnt volatile smoke containing the fluorinated salt is cooled to a room temperature and then connected with a purifying device so as to obtain fluorinated alumina, the fluorinated alumina is used for aluminum electrolysis production, and the purified gas meets national GB28661-2012 emission requirements. The method for volatilizing and removing the fluorinated salt through utilizing the wet air containing water as carrying gas, provided by the invention, realizes the purpose of removing the fluorinated salt from a spent potliner carbon block containing the fluorinated salt.
Owner:KUNMING UNIV OF SCI & TECH

Garbage incinerator device using backfire method

The invention relates to a back-burning rubbish incinerator, comprising a furnace body provided with feed inlet and fume outlet, where the feed inlet is made in the upper part of the furnace body, the fume outlet is made in the bottom of the furnace and connected with a secondary combustion chamber through secondary fume inlet, the second combustion chamber is connected with a secondary combustor, and the fume outlet of the second combustion chamber is connected with a chimney; and the secondary combustion chamber mainly comprises secondary combustion hearth, secondary air feed pipe, combustion supporter interface and mixed fume flow stabilizing chamber, where the secondary combustor is connected with the secondary combustion hearth through the combustion supporter and the secondary combustion hearth is connected with the fume outlet of the secondary combustion chamber through the mixed fume flow stabilizing chamber. Its beneficial effects: 1. low operating expenses, needing no long time combustion supporting, and as long as starting ignition, automatic combusting; 2. applied to high-water content rubbishes and realizing fast drying; 3. converting rubbishes into gas for secondary combustion, saving secondary combustion expenses and able to eliminate harmful components from the fume, and realizing harmless processing of rubbishes.
Owner:徐顺宽

Energy-saving gas cooking stove

The invention provides an energy-saving gas cooking stove. The cooking stove comprises a large gas-collecting hood, a small gas-collecting hood, a centrifugal blower, a high-temperature air preheater, a low-temperature hot water heater, a cooking stove burner, a furnace, a water pump, a cold water tank, a hot water tank, a pan, a chimney, etc. The small gas-collecting hood collects an oil smoke gas mixture generated in a cooking process, the centrifugal blower absorbs the gas mixture, the gas mixture is sent to the high-temperature air preheater, high temperature flue gas discharged from the furnace heats the gas mixture, the gas mixture returns to the cooking stove burner, and the gas mixture and gas are mixed for combustion. Energy feedback technology is used for recycling waste heat of the cooking stove, so that energy saving effect is realized. The low-temperature hot water heater is arranged behind the high-temperature air preheater for continuously recycling unexhausted heat in the flue gas and generating hot water which is used for kitchen. A small chimney is connected to the low-temperature hot water heater, so that flue gas is sent to a main chimney by the small chimney and discharged to atmosphere. The cooking stove employs the oil smoke gas mixture as a gas combustion improver instead of air, and high temperature combustion ensures elimination of components which are harmful for human body in the oil smoke gas mixture, so that kitchen environment conditions are improved.
Owner:SHANGHAI ZIKANG ELECTROMECHANICAL NEW TECH RES INST

Soap powder prepared from kitchen waste grease and preparation method thereof

The invention discloses soap powder prepared from kitchen waste grease and a preparation method thereof. The soap powder is prepared from the following formula raw materials in parts by weight: 30-90parts of fatty acid, 10-40 parts of alkali and 1-20 parts of a surfactant. The fatty acid preparation method comprises the following steps: firstly, performing acid treatment on activated carbon, filtering, washing, drying, adding 0.5-12g of activated carbon into 100g of kitchen waste grease and uniformly mixing; heating to 85 to 95 DEG C, and stirring for 15 to 25 minutes; filtering after stirring is completed, and carrying out centrifugal separation on the obtained kitchen waste grease; adding water into the centrifuged kitchen waste grease, stirring and heating to 80-90 DEG C, and mixing; dropwise adding concentrated nitric acid until the pH value is 2-3, stirring for 35-45 minutes, and standing for layering to obtain an oil layer after the reaction is finished; washing the oil layer, and standing for layering to obtain an oil layer; and adding lipase, carrying out a reaction on a shaking table at a speed of 100-130 r / min and a temperature of 50-65 DEG C for 4-8 h, carrying out enzyme deactivation in boiling water for 10-20 min after the reaction is finished, and carrying out centrifugation to obtain an upper oil phase, and drying the upper oil phase to obtain the fatty acid extracted from the kitchen waste grease. The soap powder has the advantages of soap powder environmental protection, high low-temperature volume fraction, good fatty acid decolorization effect and high purity.
Owner:江西省金泰茶脂开发有限公司

Automotive vehicle tail gas filtration purification and noise elimination system

The invention discloses an automotive vehicle tail gas filtration purification and noise elimination system which comprises a noise elimination device, a venting device and a purification device, wherein the noise elimination device is provided with a silencer; the venting device is provided with a vent pipe; the silencer is fixedly connected with one end of the vent pipe, and the other end of the vent pipe is fixedly connected with a stainless steel pressure-relief porous hole which is fixedly connected with the interior of a port of the vent pipe; the purification device is provided with a water trough; the water trough is provided with a water trough cover matched with the water trough, and the water trough cover is provided with a pipe communicating hole; an exhaust device comprises an exhaust port; the exhaust port is fixedly connected with the water trough cover and is internally provided with an exhaust pipeline matched with the exhaust port. According to the automotive vehicle tail gas filtration purification and noise elimination system, noise elimination is performed on automobile tail gas by use of the silencer, the automobile tail gas is introduced into the water trough and is filtered by use of water so as to eliminate harmful ingredients in the tail gas, so that the purposes of reducing noise pollution, alleviating automobile tail gas pollution, facilitating people and protecting the ecological environment are achieved.
Owner:戎瑞芝

Polybasic and multifunctional liquid cement grinding aid and production technology thereof

The invention discloses a polybasic and multifunctional liquid cement grinding aid and production technology of the polybasic and multifunctional liquid cement grinding aid. The polybasic and multifunctional liquid cement grinding aid and the production technology of the polybasic and multifunctional liquid cement grinding aid are characterized by comprising the following raw materials of tri ethanol amine, polymerization polybasic alcohol and water. The raw materials comprise, by weight percentage, 60 percent of the tri ethanol amine, 20 percent of the polymerization polybasic alcohol and 20 percent of the water. The production technology comprises the following steps. Firstly, weighing is performed based on proportion, and the raw materials are prepared. Secondly, the water is heated to 80 DEG C by a boiler and put in a reaction kettle, the polymerization polybasic alcohol is added, and meanwhile, the reaction kettle is started for stirring for 20 minutes. The tri ethanol amine is then added and stirred for 3 hours and cooling is performed. Thirdly, after the solution is cooled, the solution is transferred into an end product jar, and production is finished. The liquid cement grinding aid is high in comprehensive use performance, plasticity protection performance of cement mixed plastic soil is improved, and the liquid cement grinding aid has good compatibility with a concrete high-efficiency slushing agent. Comprehensive performance of cement is improved, in addition, the production technology is simple, short in production time, and high in production yield.
Owner:GUIZHOU CHUZHI BUILDING MATERIAL SCI & TECH

Regenerative flexible photosensitive resin plate

The invention relates to a regenerative flexible photosensitive resin plate. Currently, the flexible photosensitive resin plate is widely used for printing of carton boxes and flexible package printing material; generally, the flexible photosensitive resin plate is used for placing a negative image film with patterns or words on an unexposed flexible plate containing a photosensitive resin layer to be exposed with ultraviolet light; through ultraviolet irradiation, the solubility difference of solvents of a transparent part and an opaque part of the negative image film occurs, and a relief image containing the word patterns is obtained by cleaning and brushing; and the resin removed by cleaning and brushing is mixed in the solvent, the solvent is recycled through high temperature, and the resin and a part of solvent are abandoned as waste. Such waste resin is buried in the ground and cannot be rotten for hundreds of years, and a part of solvent also pollutes underground water and air; the waste resin reaches 30-50% of the purchase volume every year; and great harm is brought to the environment with the increasing use of the resin; and now the environmental protection department only charges environmental fees as a limitation way. The invention aims to protect the environment, waste resin pollution of the industry is prevented, the waste is utilized, and favorable economic benefit is achieved. The invention creates the flexible solid photosensitive resin plate using waste and old materials to produce and a preparation method of the flexible solid photosensitive resin plate.
Owner:王允慧

Power rotary purification device for smoke collecting demister and purification method

The invention discloses a power rotary purification device for a smoke collecting demister. The power rotary purification device is characterized by comprising an oil collecting water tank, a rear plate, an air inlet pore plate and two side plates, wherein the two side plates are oppositely arranged and connected to the two sides of the rear plate and the air inlet pore plate, the oil collecting water tank is fixedly connected to the rear plate, and the air inlet pore plate and the lower sides of the two side plates form a bin body with the sealed lower portion; a fan is arranged in the bin body, the air inlet hole plate is obliquely arranged, and a plurality of air inlet holes are formed in the air inlet hole plate. The invention further provides a smoke collecting demister power rotary purification method suitable for the power rotary purification device of the smoke collecting demister, when the fan sucks gas and the gas passes through the air inlet hole plate connected with the upper side of the oil collecting water tank, negative pressure can be formed on the upper side of the oil collecting water tank, and water in the oil collecting water tank or water and other liquid for absorbing the purified liquid to upward flow in the air inlet hole plate so as to be rapidly and sufficiently mixed with the gas. A good absorption and purification effect can be achieved through rapidfusion of water and gas, and harmful ingredients and peculiar smells in the gas can be removed.
Owner:许廷杨

A preparation process for extracting stevioside and fermented feed through steam explosion treatment of stevia rebaudiana

The invention belongs to the field of plant extraction, and specifically relates to a process for extracting stevioside by steam explosion treatment of stevia rebaudiana. The steps of the process are: 1) After cleaning the leaves of Stevia rebaudiana and filtering the surface moisture, put them into the steam explosion device for steam explosion. The steam explosion conditions are: temperature 130-180°C, pressure 1.4-2.0MPa; The steam-exploded stevia leaves are decomposed by replenishing water through a high-consistency mill; 3) The slurry decomposed in step 2) is put into a continuous countercurrent extractor to extract stevioside, and then the stevia leaf residue is squeezed dry with a squeezer When the water content is 50wt%, the extract and leaf residue are obtained; 4) The extract is treated with two-stage ultrafiltration membrane, then desalted and pigmented by ion exchange resin, and finally concentrated to 30wt% by nanofiltration membrane before spraying Dry to obtain the finished steviol glycoside. The method can fundamentally solve the influence of the dense structure of stevia leaf cell wall on the dissolution of active ingredients, and can improve the dissolution efficiency of stevioside extract.
Owner:SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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