998results about How to "Solve the emission problem" patented technology

The invention discloses a control method for aerosol in flue gas desulfurization by utilizing an ammonia method and a master desulfurizing tower, and the control method is characterized in that flue gas enters the master desulfurizing tower after being cooled to the relative humidity of 90 to 100% and the temperature of 60 to 80 DEG C through high-pressure waster mist or prewashing temperature reduction; the generation of the aerosol particles in the desulfurization by utilizing the ammonia method is reduced by optimizing desulfurization operating conditions, and the formed aerosol particles are condensed to grow big and are partially washed to be eliminated through a desulfurizing solution; an appropriate amount of steam is injected into the saturated flue gas through desulfurizing and eliminating the partial aerosol particles; the oversaturated water vapor environment required by the secondary condensation and the growth of the aerosol particles is established on the top of the master desulfurizing tower; and the condensed and the grown aerosol particles are eliminated through a high-efficiency demister. The invention combines the formation mechanism of the aerosol in the flue gas desulfurization by utilizing the ammonia method; and the formation of the aerosol is reduced by optimizing the process conditions of the desulfurization operation and the elimination of the formed aerosol is promoted by utilizing a steam phase change principle at the same time so that the exhaust problem of the aerosol in the flue gas desulfurization by utilizing the ammonia method can be effectively solved.

The invention discloses a method for producing porous nano silica and active carbon by utilizing rice hull ash, which comprises the following steps of: at lower temperature and normal pressure, performing secondary alkali dissolution on subcarbonate, and filtering to obtain alkali-dissolved filter liquor and filter residue; adding a certain amount of dispersing agent into the filter liquor, reducing temperature for ageing, filtering, washing, and removing the dispersing agent to obtain the porous nano silica; and adding an activating agent into the alkali-dissolved filter residue, activating, washing and drying to obtain the high specific surface area active carbon. The alkali and the active carbon can be recycled, and only a small amount of alkali and active carbon is lost. The method has the advantages of not seriously corroding equipment due to no high-temperature and high-pressure alkali boiling, sufficient raw materials, low price, no environmental pollution, and higher quality of the obtained active carbon and silica.

The invention discloses a method for processing a landfill leachate, which comprises the following steps of ammonia nitrogen removal, flocculent precipitate, electrolysis, capacitance desalination, anaerobic treatment, aerobic treatment, membrane filtration and membrane concentrate treatment. The method for processing the landfill leachate has the advantages that an electrolysis technology, a membrane technology and a bio-chemical technology are combined to form a method for processing the landfill leachate, the method has the characteristics of stable operation, strong adaptive capacity on water quality change, low cost, high treatment efficiency, effective reduction of index of ammonia nitrogen, COD, SS, chromaticity in the landfill leachate and standard discharge of effluent.

The invention relates to a VOCs (Volatile Organic Compounds) high-efficiency processing method. In the method, dust removal processing, odor removal processing and tail gas processing are carried out on waste gas. Firstly, a bag-type dust collector is adopted to carry out preprocessing on the waste gas, parts of materials are recovered and then an electrostatic dust collector is introduced to further recovery the materials; then the waste gas is subjected to low-temperature catalytic oxidation processing; the waste gas is subjected to adsorption processing. According to the invention, the petrochemical industrial organic waste gas is processed by utilizing the combination of catalytic oxidation and adsorption processes, so that the materials can be well recovered, odor of the organic waste gas is eliminated and the problem of emission of petrochemical industrial tail gas is solved. The method disclosed by the invention has a good purifying effect and low consumption and is low in engineering cost; the materials can be recovered; flue gas emission concentration is lower than the emission standard by over 30 percent; the VOCs high-efficiency processing method has obvious economic benefits and social benefits and can be used for processing the petrochemical industrial organic waste gas with high concentration, high flow and complex ingredients.

The invention discloses a supercritical fluid dyeing machine. A horizontal type cylindrical dyeing kettle, a magnetomotive cloth lifting wheel, a spray cavity, a wave-shaped cloth guide passage in the dyeing kettle, a heat exchanger, a dye kettle or/and an entrainer kettle and a circulating pump are used as main components to form a dyeing circulation system; and both ends of a fan are respectively connected with fluid outlets under the spray cavity and the dyeing kettle and form a cloth feeding system together with the magnetomotive cloth lifting wheel, the spray cavity and an operating opening. A rope-shaped fabric realizes circulated dyeing under the common action of the fluid in the magnetomotive cloth lifting wheel and the spray cavity, and the fluid in the dyeing kettle carries out forced circulation by the circulating pump. The dye and the fluid can realize recycling by a separating and recycling system after dyeing, and the whole dyeing circulation system and the separating and recycling system are clean to achieve the requirement during color changing and dyeing. The supercritical fluid dyeing machine can realize anhydrous dyeing processing on the fabric in a loosening type tension-free state without the production and discharge of pollutants, and has the characteristics of ecology, environmental pollution, wide adaptability of fabric variety, and the like.

The invention relates to an automobile resource sharing system. In China, the problem of traffic jam becomes the key conflict of Chinese economical and social development, traffic jam makes people very inconvenient to travel, and emission of large quantity of tail gas lowers the quality of people's life. The automobile resource sharing system comprises a vehicle system user communication terminal, a vehicle management system, a passenger system user communication terminal, a passenger information management system, an integrated information processing system, a synchronous synonym database, a data acquisition system and a temporary address data analysis system. One-to-many car-pooling software system is disclosed to effectively solve the problems of commuting difficulty, car-pooling insecurity, illegal taxies, large quantity of tail gas emission, high travel expenses of passengers and expansive vehicle maintenance fees of vehicle owners.

The invention belongs to the technical field of sludge treatment of oil fields and relates to a method for recovering sandy oil-containing sludge, which comprises the following steps: fully mixing extracting solvent with the sandy oil-containing sludge of the oil fields in a volume ratio of 0.5:1 at a temperature of between 10 and 80 DEG C to allow oil to dissolve in the extracting solvent to form a structure of three separated layers; then separating an extracting solvent layer, a water layer and a silt layer from one another; and performing distillation of the separated extracting solvent layer at an atmospheric pressure or reduced pressure to acquire oil and the extracting solvent respectively. The method can effectively extract and recover crude oil in the oil-containing sludge, and silt separated out reaches national stacking standards; the solvent can be recycled, and washing water can be sewage of the oil fields and can be recycled by electroflotation without causing secondary pollution, so that the oil and the water in the sandy oil-containing sludge of the oil fields can be recovered, and thus the original discarded resources are fully utilized, and the problem of discharging the sandy oil-containing sludge of the oil fields is solved effectively.

The invention relates to a sand burning preventing coal dust free green sand for casting and preparation method thereof. The green sand contains 50-90% of naturally clay-bonded sand, 2-40% of sand burning preventing assistant and 2.5-20% of water by weight percent; the preparation method includes that the naturally clay-bonded sand and the sand burning preventing assistant are mixed in a sand mixing machine and the water is added for mixing to uniform. The green sand of the invention contains no coal dust and can be recycled; the casting mould made by the green sand of the invention is utilized to produce castings, crude sand consumption is low, the surface of casting is not burning-on, surface quality is high, no coal dust is required to add, recycling of moulding sand is good, environmental protection is less, and high temperature mould dismantling improves productivity.

The invention provides a method for preparing an organic fertilizer by utilizing amino-nitrile waste liquor, which comprises the steps: catalyst and dispersant are added in the associated amino-nitrile waste liquor generated in the preparation of iminodiacetonitrile, aminoacetonitrile, ammonium dinitrile and EDTW, and mixed for reaction at the temperature of 30 to 150 DEG C and the pressure of 0 to 1.0MPa, so as to obtain base fertilizer which is added with biological strains for fermentation of 7 to 15 days at the temperature of 10 to 60 DEG C after nutrient allocation; and then hydrolysis is carried out to the base fertilizer to obtain a raw fertilizer which is carried out with nutrient allocation, pelleting and drying to be prepared into the organic fertilizer. The method can reduce the treatment cost, effectively utilizes the resources of the water liquor, and prepare the organic fertilizer by utilizing the amino-nitrile waste liquor.

The present invention relates to no-baking brick, and is especially no-baking brick made of oil field sludge and its production process. The no-baking brick of the present invention is produced with the following material and through mixing and extrusion in extruder: oil field sludge 30-60 wt%, river sand 15-40 wt%, cement 15-30 wt%, flyash 0-35 wt% and curing agent 1-8 wt%. The no-baking brick of the present invention has high strength, no pollution and simple production process, and the present invention solves the problem of pollution and exhaust of oil field sludge.

The invention discloses a non-phosphorus scale and corrosion inhibitor, which is characterized by comprising the following productive raw materials by weight portion: 5 to 80 portion of deionized water, 5 to 60 portions of polyepoxysuccinic acid, 1 to 10 portions of methylbenzotriazole, 3 to 20 portions of sodium gluconate, 1 to 10 portions of imidazoline and 2 to 15 portions of sodium tungstate. The non-phosphorus scale and corrosion inhibitor is a completely non-phosphorus medicament. Experiments show that the non-phosphorus scale and corrosion inhibitor has a scale inhibition rate of above 95 percent, a stainless steel and copper corrosion rate of less than or equal to 0.005mm/a and a carbon steel corrosion rate of less than or equal to 0.075mm/a and realizes phosphor-free discharge, wherein both the scale inhibition rate and the corrosion inhibition rate reach related national and industrial standards. The non-phosphorus scale and corrosion inhibitor has the advantages of radically solving the problem of the discharge of phosphor in circulating water, laying a good foundation for the governance and recycling of discharge water and providing a new environmental protection means.

The invention provides a method for producing the magnesium sulfate heptahydrate, which is characterized in that the waste sulfuric acid that is generated in the sulfonation alkaline fusion process is adopted as the raw material; the waste sulfuric acid solution is mixed with magnesia, so that the ion exchanging reaction can be adequately performed; after the adequate reaction, flocculating agent is adopted for precipitation, foreign matters removal and the color removal, and then the solution is compressed and filtered by a framework to get the magnesium sulfate clear solution; the magnesium sulfate clear solution is cooled down, crystallized and centrifugally filtered to get the solid magnesium sulfate heptahydrate. The method not only resolves the problems of the vast discharging of the waste sulfuric acid, but also can produce the product of the magnesium sulfate from the waste sulfuric acid solution; moreover, the method has less investment, simple craftwork and high recycling rate, thereby having remarkable social benefit and economic benefit.

The invention is a method for producing phosphoric acid and soluble potassium salt by phosphorus ore and potash feldspar, characterized in that, the method comprises: selecting phosphorus ore containing P2O5 15-30% and potash feldspar containing K2O 10-18% to mix with coke; crushing, ball milling, balling by adding water and drying; calcining for 10-30 minutes under temperature of 1100-1400DEG C; then soaking the calcined product in 1-5% citric acid solution for 12 hours, wherein, the soaking temperature is between room temperature and 60 DEG C; crystallizing and purifying the separated filtering solution; obtaining the soluble potassium salt; P2O5 in the phosphorus ore is reduced into phosphor vapor to be volatilized, the phosphor vapor above the material layer can be oxidized into P2O5 gas by the air introduced into the furnace, in the hydration apparatus, P2O5 gas can be absorbed to obtain the phosphoric acid. the invention solves the problems of waste slag and waste gas emissions during producing phosphoric acid, also alleviates the existing state that in our country, the soluble kalium resources are depended on importation, the method of the invention is economical and environment-protecting.

The invention discloses a tin stripping agent based on a sulfuric acid-ferric salt system and a preparing method of the tin stripping agent, and belongs to the technical field of metal coating stripping. The tin stripping agent based on the sulfuric acid-ferric salt system is prepared by following components including, by content, 150-300 g/L of concentrated sulfuric acid, 100-200 g/L of the ferric salt, 0.1-1 g/L of ferrous sulfate, 0.1-5 g/L of a copper organic corrosion inhibitor, 2-10 g/L of an organic acid complexing agent, 2-3 g/L of a surface active agent, 10-100 g/L of an accelerant and the balance water. The water serves as a solvent of the tin stripping agent based on the sulfuric acid-ferric salt system, nitric acid and fluoride are not contained, toxic gas containing oxynitride is not generated in the tin stripping process, sludge is not generated, the corrosion to copper is extremely low, the copper face is bright, and the tin stripping agent is an environment-friendly tin stripping agent.

A method of preparing the 2, 2'-dithiocarbamate dibenzo thiazole based on the oxygen method of the 2-mercaptan benzothiazole ammonia salt is characterized in that the 2-mercaptan benzothiazole is added with ammonia or a compound for the dissolution reaction; the compound can produce the ammonia with the existence of water; in the dissolution process, the solution is heated and stirred; the solution of the ammonia salt is filtered after the dissolution; the catalyst is added; the air or oxygen is added under the condition with a certain temperature and pressure for the reaction of a certain period; the suspension produced after the reaction is pumped and filtered to get the filter cake; the filter cake is washes by water, dried and cracked to get the product 2, 2'-dithiocarbamate dibenzo thiazole; the filtered solution after being pumped and filtered and water for the washing process can return to the container to be used as the solvent for the cycling use after being supplemented with ammonia. The method has no wastewater and exhaust emission in the whole production process.

The invention discloses desulfurization wastewater concentrating and flue gas drying integrated treatment system and method. The desulfurization wastewater concentrating and flue gas drying integrated system comprises a desulfurization wastewater pool arranged at the bottom of a desulfurization tower, a three-stage sedimentation tank connected with the desulfurization wastewater pool and used for pretreatment of desulfurization wastewater, a filter connected with the three-stage sedimentation tank and used for solid-liquid separation, an evaporator connected with the filter and used for concentration of the desulfurization wastewater, a wastewater pool connected with the evaporator and used for storing the concentrated desulfurization wastewater, a water pump connected with the water pool and used for delivering the concentrated desulfurization wastewater, a concentrated desulfurization wastewater evaporation crystallization device connected with the water pump and a bypass flue system connected with a chimney and the concentrated desulfurization wastewater evaporation crystallization device, and the bypass flue system comprises a cyclopneumatic separator used for gas-liquid separation, a dust remover and a fan used for delivering bypass hot flue gas. The desulfurization wastewater concentrating and flue gas drying integrated treatment system is simple in structure and process, the problem about drainage of the desulfurization wastewater is solved, running cost of the system can be effectively reduced, flue gas temperature can be lowered, and heat released to the environment is decreased.

The invention belongs to organic fertilizer, and in particular relates to organic fertilizer for killing underground injurious insects and a preparation method thereof. The organic fertilizer comprises the following components in part by weight: 1000 parts of tobacco stalk, 25 to 30 parts of dry livestock manure, 5 to 10 parts of urea and 3 to 5 parts of solid high-efficient microorganism zymogeneous bacteria. The preparation method comprises the following steps that: the tobacco stalk is smashed; the livestock manure is dried and dehydrated; the urea is added to be uniformly mixed; the zymogeneous bacteria is inoculated; the moisture and the pH value are adjusted, fermentation stocks are piled up, and black plastic film covers the fermentation stocks, so the fermentation stocks are undertaken the anaerobic fermentation; after the temperature is increased, the stocks are turned for a plurality of times until the materials are fermented and matured and the size is reduced to two thirds of that of the original stocks; and the fermented stocks are naturally ventilated and dried and are bagged to store. The organic fertilizer has the advantages that the fertilizer efficiency is high, the underground injurious insects can be killed, the content of the organic colloid of the soil is increased after the application of the fertilizer, the fertilizer and water maintaining capacity of the soil is improved, the period of validity of the fertilizer is prolonged, and the probiotics in the soil can be compensated.

The invention belongs to the technical field of new polymer materials, and particularly relates to an ultraviolet-curable waterborne polyurethane emulsion as well as a preparation method and application thereof. According to the invention, polypropylene carbonate dihydric alcohol, diisocyanate and a reactive monomer are used as main raw materials; a UV-curable double bond group then is introducedso that the acrylate resin and the polyurethane resin are connected through chemical bonds, therefore, organic unification of respective excellent properties of the two resins is effectively achieved,and a film cured by the ultraviolet-curable waterborne polyurethane emulsion is high in hardness and has good solvent resistance, corrosion resistance, scratch resistance and mechanical strength. Moreover, the raw materials of the ultraviolet-curable waterborne polyurethane emulsion do not need an organic solvent, acetone is not required to be used as a solvent to reduce the viscosity of the system during preparation, the reactive monomer can reduce the viscosity of the system, the use of the organic solvent is avoided, the problem of VOC emission is further solved, and the pollution to the environment and the harm to health are reduced.

The invention discloses a system and a method for instantly releasing boiling water from a water dispenser. The system comprises a shell, a water tank, and a heater, a gate valve, a water pump, connecting pipelines, a temperature sensor and a control circuit which are arranged in the shell. The system is also provided with a flow stabilizing device, wherein one water outlet of the flow stabilizing device is connected with a water inlet of the heater through the pipeline; the other water outlet of the flow stabilizing device is connected with a water inlet of the water tank through a three-way device; a water inlet of the flow stabilizing device is connected with a water outlet of the water tank through the pipeline and the water pump; a water vapor outlet of the heater is connected with the water inlet of the water tank through the pipeline and the three-way device; and one end of a water outlet pipeline of the heater is arranged in the heater, and the other end of the water outlet pipeline of the heater extends out of the heater and then is connected with the gate valve. The system adopts the method of arranging the flow stabilizing device, a cheap centrifugal pump and a water supply system preheating water in the water tank to stably supply water, is insusceptible to environment, can enable the boiling water to be instantly released, and has the advantages of simple structure, instantaneity and energy saving.