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58results about How to "Effective removal" patented technology

Membrane adsorbent for recycling nitrogen and phosphorus resources from waste water as well as preparation method and application thereof

The invention relates to a membrane adsorbent for recycling nitrogen and phosphorus resources from waste water. A doping method is adopted to uniformly distribute resin capable of selectively adsorbing nitrogen and phosphorous into a casting film solution, a wet phase separation method is adopted for preparation, the casting film solution comprises 10-30wt% of polymer, 10-35wt% of resin, 4-30wt% of additive and the balance of solvent; the membrane adsorbent comprises a flat membrane adsorbent and a hollow fiber membrane adsorbent; and the membrane adsorbent can be used for preparing magnesium ammonium phosphate as a slow release fertilizer, thus the recycling of nitrogen and phosphorus resources is realized. The invention has the advantages that: the surface of the membrane adsorbent is provided with an open pore structure, the water flux is higher, and the adsorption and desorption performances of nitrogen and phosphorous ions are good; the preparation method of the membrane adsorbent is simple, easy to implement, low in cost, environmentally-friendly, safe and reliable as well as easy for realization of large-scale application and popularization, thus the preparation method has practical industrial application significance.
Owner:天津森诺过滤技术有限公司

Dewaxing cleaning liquid as well as preparation method and application thereof

The invention relates to a dewaxing cleaning liquid as well as a preparation method and application thereof. The dewaxing cleaning liquid comprises the following active components in parts by weight: 5-70 parts of an efficientnonionic surfactant, 0.1-20 parts of a low-foam foam-inhibiting type surfactant and 1-20 parts of a dispersion stabilizer. The dewaxing cleaning liquid provided by the invention is obtained by compounding the efficientnonionic surfactant, the low-foam foam-inhibiting type surfactant and the dispersion stabilizer, and has the following propertyadvantages when being compared with a conventionalindustrial product: 1, the cleaning property is good, and the service life is prolonged by more than 20% when being compared with that of a conventional dewaxing liquid (generally the requirement is 60 pieces/L); 2, the dewaxing cleaning liquid is environmentally friendly and free of pollution, small in volatilization loss when being compared with a solvent dewaxing liquid, and is harmless for human bodies and environments; 3, the cleaning effect is good, the wax can be stably retained in dewaxing cleaning liquid for a long time and is not easy to be layered or separated, and granular muddy matters which can interfere the cleaning effect can be avoided; 4, the dewaxing cleaning liquid has no or a small amount of foams, when being filled into a cleaning tank or mechanically stirred, the dewaxing cleaning liquid does not generate a great amount of foam, and thus convenience can be brought to manual operation.
Owner:BEIJING POLYSTAR HITECH CO LTD

Method and device of continuously synthesizing tetramethyl ammonium carbonate by multi-reactors in series

The invention discloses a method and a device of continuously synthesizing tetramethyl ammonium carbonate by multi-reactors in series. Liquid-phase reaction materials in each reactor are connected in series through a pipeline. Gas-phase reaction materials are connected in parallel to keep the pressure between reactors balanced. The reaction materials flow into a next stage reactor from a previousstage reactor through the difference of liquid level in the reactors. The two stage reactors have a difference of liquid level of 0.5-1.0 m. The tetramethyl ammonium carbonate is prepared by continuously adding raw materials including dimethyl carbonate, trimethylamine and solvent methanol to a first stage tank reactor in a mole ratio of 1:0.8:3-1:1.5:8, leading a reaction mixture to continuouslyflow out from the last stage tank reactor, recycling a reaction solvent and an unconverted reactant by flash evaporation, then re-adding to the first stage tank reactor for recycling, and finally removing the solvent and the unconverted reactant. The operation pressure of the invention is the lowest, the reaction is stable, and continuous operation and automatic control are realized. Simultaneously, the reaction materials are heated to a reaction temperature by reaction heat, so the energy is saved and the production cost is reduced.
Owner:CANGZHOU SUNHEAT CHEM

Anti-eavesdropping anti-monitoring device

The invention brings forward an anti-eavesdropping anti-monitoring device. The anti-eavesdropping anti-monitoring device comprises a central processor, a controller, a liquid crystal screen, a wireless signal detector, an electronic signal jammer, a signal detection switch, a signal interference switch and an equipment total switch. The signal detection switch, the signal interference switch and the equipment total switch are respectively connected with the input end of the controller; the controller is in bidirectional connection with the central processor; the wireless signal detector is in bidirectional connection with the central processor; the electronic signal jammer is connected with the output end of the central processor; and the liquid crystal screen is connected with the output end of the controller. The anti-eavesdropping anti-monitoring device has the following advantages: the position of eavesdropping and monitoring equipment can be accurately found and effectively removed, and environmental safety of a space area requiring inspection is guaranteed; and for the eavesdropping and monitoring equipment which cannot be removed, operation of the equipment can be interfered, recordings and videos of the equipment are enabled to be invalid, and the security of highly confidential conference content, file data and the like of enterprises and the like is ensured.
Owner:品晖(河北)人力资源服务有限公司

Oiling device for sewing thread production

The invention discloses an oiling device for sewing thread production, comprising a box body, a sewing thread, an oil basin, a plurality of guide wheels, and a motor. The guide wheels are arranged inside the box body from left to right. The sewing thread is passed around the guide wheels in sequence. The oil basin is arranged, close to the left end, inside the box body; a return oil plate inclinedto the upper right corner is arranged on the right side of the oil basin; the sewing thread is passed through the oil basin in V form. A stir wheel is arranged at the horizontal part of the sewing thread, a stir rod in arc shape is arranged on the stir wheel, the sewing thread can be stirred, and therefore, the sewing thread vibrates severely to throw off surplus oil from the sewing thread. An oil scraping mechanism scrapes oil for the sewing thread so that environment pollution due to oil that is brought out and resource waste due to the same cause are avoided. The surplus oil on the sewingthread is effectively removed via the simple structure; the height of the oiling device is adjusted via adjusting support feet; the adjusting support feet can be retracted so that the oiling device ismoved via moving support feet; the oiling device is flexible and convenient to use.
Owner:浙江三和线业科技有限公司

Rare earth elements contained laminated dihydroxy composite metal oxide, and preparation method and application thereof

The invention relates to a rare earth elements contained laminated dihydroxy composite metal oxide, and a preparation method and an application thereof. The rare earth elements contained laminated dihydroxy composite metal oxide is synthesized through treating a salt containing metal elements comprising La, Cu, Mg and Fe as a raw material, and is used for adsorbing and removing As in water. The preparation method comprises the following technological steps: preparing a solution 1 containing certain concentrations of La, Cu, Mg and Fe, and preparing a solution 2 containing certain concentrations of sodium hydroxide and sodium carbonate; adding the solution 1 and the solution 2 into a beaker containing a certain amount of deionized water at certain speeds in a dropwise manner while stirring; and ageing a solution obtained after a reaction and containing a precipitate at a certain temperature for a period of time, centrifuging, repeatedly flushing the precipitate with deionized water until the supernatant is neutral, and drying to obtain the rare earth element contained laminated dihydroxy composite metal oxide which is an adsorbent product. Compared with products in the prior art, the product provided by the invention can realize the effective treatment and purification of the water polluted by As, and has the advantages of high utilization rate, low cost and the like.
Owner:TONGJI UNIV

Regeneration method for preparing light olefins catalyst from oxygen-containing compounds

The invention relates to a method for regenerating a catalyst for preparing low-carbon olefin from an oxygen-containing compound, which mainly solves the problem that the temperature of a regenerator is difficult to control in the prior art. The method adopts a technical proposal which comprises the following steps: putting a regenerating medium of which the temperature is between 100 and 300 DEG C into a regeneration dense phase zone of a fluidized bed regenerator to be contacted with a catalyst which is to be regenerated and contains an aluminosilicophosphate molecular sieve with 0.5 to 7.5 weight percent of coke, performing an oxidation reaction on the mixture at a regeneration temperature of between 600 and 700 DEG C to generate large amount of heat while generating a gas phase material flow which contains O2, CO, and CO2, and delivering removing the heat out of the regeneration dense phase zone through an external heat-removing device of the regenerator, wherein the external heat-removing device of the regenerator is a full back mixing type external heat-removing device, and the distance between the connecting position of the external heat-removing device of the regenerator and the regeneration dense phase zone and a feed distributor for bottom regeneration media is less than or equal to 0.5 of the height of a bed layer in the regeneration dense phase zone. The technical proposal better solves the problem and can be used for the industrial production of the low-carbon olefin.
Owner:CHINA PETROLEUM & CHEM CORP +1

Equipment system for Fischer-Tropsch synthetic reaction and application thereof

The invention discloses an equipment system for Fischer-Tropsch synthetic reaction and the system contains a three-phase suspension bed Fischer-Tropsch synthetic reactor and an auxiliary system thereof. The equipment system is characterized in that the three-phase suspension bed Fischer-Tropsch synthetic reactor is provided with a chilling distributor which is used for injecting a circulated condensation product back into the reactor and performing forced heat removing on the filter area of the reactor; the equipment system is also provided with a waste-heat boiler to ensure that the hot air stream of the high temperature light reaction product discharged from the outlet of the reactor first passes through the waste-heat boiler to exchange heat, recycle partial heat and remove less solid catalysts carried by the air stream, thus the downstream condensation product does not contain catalysts. The invention also discloses a method for performing Fischer-Tropsch synthesis by using the equipment system. In the method, tail gas circulation and partial condensation product circulation are adopted, thus the removal of reaction heat can be strengthened, the production capability of the reactor can be increased, the level of the energy recycled from reaction heat can be increased, and the problems that the catalyst is overheated to deactivate and form carbon can be effectively solved.
Owner:SYNFUELS CHINA TECH CO LTD

Hot-water system of heat pump

The invention discloses a hot-water system of a heat pump. The hot-water system comprises a compressor, a four-way valve, an outdoor heat exchanger, a throttling device and a water tank, and further comprises a bushing heat exchanger and a coil heat exchanger, wherein the bushing heat exchanger and the coil heat exchanger are arranged in parallel; in the heating operation of the system, refrigerant flowing out from the compressor flows through the four-way valve to enter the bushing heat exchanger for condensation heat release; after the pressure of the refrigerant is reduced by the throttling device, the refrigerant is fed in the outdoor heat exchanger for evaporation heat absorption; and finally, the refrigerant enters the compressor by the four-way valve; in the defrosting operation of the system, the refrigerant flowing out from the compressor enters the outdoor heat exchanger by the four-way valve for condensation heat release; after the pressure of the refrigerant is reduced by the throttling device, the refrigerant is fed in the coil heat exchanger for evaporation heat absorption; and finally, the refrigerant is fed in the compressor through the four-way valve. The system directly supplies heat to heated water through the bushing heat exchanger in the heating process, so that the purpose of quick water heating can be realized; the heat is supplied through the coil heat exchanger in the defrosting process; and the influence on the water temperature in the water tank and the use comfort of users from the heat absorption of the coil heat exchanger in the defrosting process is little.
Owner:GREE ELECTRIC APPLIANCES INC OF ZHUHAI

Technology of synchronous desulfurization and denitration through flue gas ammonia method based on electrolytic regeneration iron removal

The invention discloses a technology of synchronous desulfurization and denitration through a flue gas ammonia method based on electrolytic regeneration iron removal. The problem that for an existing desulfurization and denitration technology, the regeneration efficiency of an absorption solution is not high is solved. According to the technical scheme, the technology comprises the steps that pressurizing is conducted on flue gas, the flue gas is sent to a concentration tower to be reacted with a concentrated solution in the tower in a contacting mode, the flue gas coming out of the concentration tower is sent to an absorption tower to be reacted with the circulation absorption solution in the tower in a contacting mode, the concentrated solution reacted at the tower bottom part of the concentration tower is sent into an ammonium sulfate crystal system after iron is removed through a first electrolytic reactor, the absorption solution reacted at the tower bottom part of the absorption tower is sent back to the upper portion of the absorption tower to serve as the circulation absorption solution through regeneration, and the concentration solution enters an anode chamber in a reaction unit of the first electrolytic reactor to conduct an oxidation reaction and then enters a cathode chamber to conduct a reduction reaction; a reacted electrolyte is discharged from an outlet connection short pipe and sent into the ammonium sulfate crystal system. The technology of synchronous desulfurization and denitration through the flue gas ammonia method based on electrolytic regeneration iron removal has the advantages of being simple in method, low in investment cost and operating cost, high in conversion efficiency, good in iron removing effect and good in desulfurization and denitration effect.
Owner:武汉武钢绿色城市技术发展有限公司
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