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212results about How to "Avoid air pollution" patented technology

Environment-friendly dust removal device used for textile workshop

The invention discloses an environment-friendly dust removal device used for a textile workshop. The environment-friendly dust removal device used for the textile workshop comprises a fan, a box, a supporting rod, a dust removal scraper blade, a motor fixing frame, a speed reducer, a motor, a cleaning plate, bristles and a filter screen, wherein the box is fixedly connected with the vertical surface of the left side of the shell of the fan, the supporting rod is vertically and fixedly connected in the middle in the box, the filter screen is arranged at the left side of the supporting rod, theperiphery of the filter screen is fixedly connected with the box, the dust removal scraper blade is arranged at the lower end of the filter screen, the dust removal scraper blade compresses the filterscreen on the supporting rod, and the dust removal scraper blade is fixedly connected with the supporting rod, the motor fixing frame is fixedly connected with the vertical surface of the outer sideof the box in the horizontal direction, the speed reducer is fixedly connected in the middle of the vertical surface of the outer side of the motor fixing frame, and a motor is fixedly connected withthe left side of the speed reducer. The environment-friendly dust removal device used for the textile workshop is scientific and reasonable in structure, good in using effect and low in manufacturingcost, air emission quality of a fan dust removal device is greatly improved, and the environment is effectively protected.
Owner:梁永江

Comprehensive recovery and utilization method for waste vanadium catalyst

The invention discloses a comprehensive recovery and utilization method for a waste vanadium catalyst. The method comprises the steps that water leaching and reductive acid leaching are sequentially conducted on the waste vanadium catalyst; silicon is separated and recycled by being prepared into sodium silicate through alkaline leaching in a residue leaching mode; single-stage extraction is conducted on leachate through saponification P204, vanadium and potassium are extracted and separated through vanadium extraction technologies of tail liquid concentration and separate re-extraction, potassium is separated by preparing potassium sulphate from raffinate through evaporation and concentration, and vanadium is recycled by preparing vanadium pentoxide from an extraction phase through the processes of back extraction, vanadium precipitation, calcination and the like. Through the extremely high selection characteristic of the saponification P204, not only are the extraction capacity, the utilization rate and the vanadium extraction rate increased, but also influences of iron, phosphorus and arsenic on V2O5 purity are effectively avoided, vanadium precipitation can be directly conducted after back extraction, a high-purity vanadium product is prepared, and the phenomenon that chlorine is released in the oxidization process to pollute the environment is avoided. The method has the advantages that the extraction stages and part of the processes are reduced, the technological process is simplified, the cost is reduced, the economic benefit is increased, and the double effects of making the best use of everything and protecting the environment are achieved.
Owner:KAIFENG UNIV

Solar phase-change heat collecting and storing tube

The invention relates to a solar phase-change heat collecting and storing tube, which comprises a solar vacuum heat collecting tube, a heat exchange tube, a phase-change material, a phase-change heat accumulator and a draft tube. The phase-change heat accumulator is arranged in the solar vacuum heat collecting tube; the heat exchange tube is embedded in the phase-change heat accumulator, and the upper part of the heat exchange tube is slidably connected with the phase-change heat accumulator; the phase-change material is filled between the phase-change heat accumulator and the heat exchange tube; and the draft tube is inserted into the heat exchange tube. In the solar phase-change heat collecting and storing tube, the fastening end cover of the phase-change heat accumulator is provided with sealing grease, so the heat exchange tube is slidably connected with the phase-change heat accumulator; when the phase-change material is overheated, high pressure in the tube body of the phase-change heat accumulator can push the heat exchange tube to move outwards to release high pressure so as to complete overheated unloading, so the safety performance when the heat collecting tube is overheated is greatly improved and the phase-change material is ensured not to be overheated.
Owner:皇明太阳能(上海)有限公司

Anti-blocking screening device with dedusting function and for mineral separation

The invention relates to an anti-blocking screening device with a dedusting function and for mineral separation. The anti-blocking screening device with the dedusting function and for the mineral separation comprises a main body, a screen barrel and two supports, and further comprises two dust removal mechanisms and two vibration mechanisms, wherein each vibration mechanism comprises a cam, a connection rod, a moving rod, a moving plate, a limiting ring, a motor, a first spring and a fixed rod, and each dust removal mechanism comprises a connection pipe, a dust removal box, a filter net, an air fan, a seal cover, a handle, two fixed plates and two replacement assemblies, and each replacement assembly comprises a fixed block, a support rod and two replacement units. The anti-blocking screening device with the dedusting function and for the mineral separation can perform up-down shaking operation on mineral aggregate in the screen barrel, prevents the mineral aggregate from blocking the screen barrel so as to prevent the mineral aggregate from influencing screening effect when the screen barrel performs screening work, can perform impurity removal and purification work on dust in the main body through the dust removal mechanisms, and prevents the dust from scattering in all directions so as to prevent the dust from influencing surrounding air environment.
Owner:肇庆市华楠环保建材有限公司

Detection device and detection method of sealing performance of automobile fuel evaporation system

The invention discloses a detection device and a detection method of sealing performance of an automobile fuel evaporation system. The detection device comprises an engine, a carbon canister control valve, a carbon canister, a fuel tank, an ash filter, an electronic control unit, an engine water temperature sensor and an intake air temperature sensor, wherein the detection device further comprisesa pressure sensor, a carbon canister stop valve and a leakage fault indication module, the pressure sensor is installed on a connecting pipe of the carbon canister and the fuel tank, the carbon canister stop valve is connected with the carbon canister and the ash filter, and the pressure sensor, the carbon canister stop valve and the leakage fault indication module are electrically connected withthe electronic control unit; and the detection method comprises the following steps: firstly detecting whether the carbon canister stop valve has leakage under the condition that a detection condition is satisfied, then detecting whether the fuel evaporation system has large leakage, and finally detecting whether the fuel evaporation system has small leakage. By adoption of the detection device and the detection method disclosed by the invention, whether the fuel evaporation system has leakage can be detected in time during the operation of the engine so as to better avoid the air pollution caused by fuel vapor leakage.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Artificial leather additive and preparation method thereof

The invention relates to an artificial leather additive and a preparation method thereof. The invention relates to a field of artificial leather additive processing. According to the invention, the additive is composed of crushed tree branches, hydrogen peroxide accounting for 5-15% of the total weight of the crushed tree branches, ultramarine blue accounting for 0.05-1% of the total weight of the crushed tree branches, glass water accounting for 3-13% of the total weight of the crushed tree branches, a whitening agent accounting for 0.5-3% of the total weight of the crushed tree branches, caustic soda flake accounting for 0.5-2% of the total weight of the crushed tree branches, and sodium sulfide nonahydrate accounting for 1-5% of the total weight of the crushed tree branches. Through steps of stirring, sun-drying, pulverizing, powder sieving, quality inspection, sterilization, and bagging, finished products are obtained. According to the invention, the artificial leather additive is manufactured by using tree branches as a raw material, such that atmosphere pollution caused by a traditional preparation method using plastic is avoided, and resource is greatly saved. As it is known to all, wood is a renewable resource. With the circulated utilization method, harmful gas caused by plastic production is greatly reduced. Also, the cost of wood is low, and the additive production method is simple.
Owner:ANHUI BODA CELLULOSE TECH

Extraction vanadium recovery process

The invention discloses an extraction vanadium recovery process. Spent vanadium catalysts are subjected to water leaching and reductive acid leaching treatment to obtain VOSO4-containing extracted raw liquid, the raw liquid is subjected to the single-stage extraction, tail liquid concentration, separate reextraction and back extraction vanadium recovery process, vanadium precipitation is carried out with ammonium hydroxide, and roasting is conducted to produce vanadium pentoxide. Saponified P204 is adopted as a main extraction agent, it is ensured that the pH value of the whole system is within the optimal pH value range in the extraction process, the extraction system can maintain a stable pH value, and the single-stage extraction rate of vanadium is greatly improved to above 96.4%; tetravalent vanadium obtained through extraction can be directly subjected to vanadium precipitation without oxidation, a high-purity vanadium product is produced, the technological process is simplified, and atmosphere pollution caused by chlorine generated by chlorate vanadium oxide is avoided; meanwhile, the selectivity characteristic of the saponified P204 is utilized, the influences of iron, phosphorus and arsenic on purity of extracted vanadium are effectively avoided, a part of impurity removal work is reduced, raw material consumption is reduced, enterprise cost is reduced, and economic benefits are remarkable.
Owner:KAIFENG UNIV
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