42results about How to "Pollution generation" patented technology

The invention discloses an irradiation crosslinking chitosan/gelatin/polyvinyl alcohol hydrogel dressing as well as a preparation method and an application thereof. The preparation method comprises the steps that a chitosan, gelatin and polyvinyl alcohol solution is prepared by using ultrapure water serving as a solvent; the solution is stirred and mixed uniformly and then irradiated, and original hydrogel is obtained; the original hydrogel is put into the ultrapure water to be soaked; and the chitosan/gelatin/polyvinyl alcohol hydrogel dressing is prepared. The hydrogel dressing is extensive in raw material source, simple in preparation technology and stable in performance, and has the advantages of inflammation diminishing, wound pain relieving, scar reduction, wound healing promotion, wound seepage absorption, and excellent biocompatibility. The hydrogel dressing is easy to degrade after abandoned, and has a smaller influence on an environment. The hydrogel dressing can be applied to the fields of trauma hemostasis, inflammation diminishing, scald, postoperative wound healing and the like.

The invention discloses a rice husk cellulose adsorbent, and a preparation method and the application of the rice husk cellulose adsorbent. The technical scheme adopted by the preparation method comprises the steps of taking rice husks; putting the rice husks in a constant-temperature drying box after washing the rice husks by deionized water; drying under 40 to 60 DEG C; taking out the rice husks and smashing the rice husks into powder; treating rice husk powder by slowly adding the rice husk powder in concentrated sulfuric acid; carrying out water-bath heating treatment; washing acidized rice husk powder by sodium bicarbonate; washing the powder to be neutral by the deionized water; filtering; carrying out constant-temperature drying under 40 to 70 DEG C; grinding the powder until the grain diameter is 100 to 150 mum. The rice husk cellulose adsorbent, and the preparation method and the application of the rice husk cellulose adsorbent, disclosed by the invention, have the advantages that a functionalized adsorbent is prepared by modifying the rice husks by sulfuric acid, gallium can be adsorbed from gallium-contained solution, low cost is realized, waste is changed into wealth, the adsorption amount is large, and the like.

The invention relates to a preparation method of an oil absorbent, in particular to a method for preparing the oil absorbent from low grade diatomite. The preparation method comprises the following 9 steps of: low grade diatomite raw material selection, crushing, acidification treatment, washing, drying, adding of the assistant (3%-5%) Na2Cl (industrial salt) and mixing, roasting at 750-850DEG C, breaking winnowing, and adding of the silane coupling agent KH-550 (gamma-aminopropyl triethoxysilane, Nanjing Union silicon Chemical Co., LTD. 5%-7%) to conduct modification treatment, thus obtaining the particle and powder diatomite oil absorbent. The oil absorbent has simple and easy preparation method, wide raw material sources and low cost, solves the current solid waste pollution problem of low grade diatomite, opens up a new way for low grade diatomite application, and realizes recycling of waste materials. The oil absorbent has good selectivity, strong absorptivity up to 500% of its own weight, rapid oil absorption speed, small oil absorbent stacking density, a melting point of 1450DEG C, and a high use temperature, and can float on the water surface before and after oil absorption, thus being convenient for recovery and post-treatment.

The invention relates to a method for light-blind-fermentation-coupling-producing hydrogen by culturing sea photosynthetic bacterium with sludge and effluent of sea cultivation section, The method comprises the following steps: proceeding with culturing without light in order to produce hydrogen with sludge and effluent of sea cultivation as the culture medium; culturing with light; proceeding with coupling-production hydrogen by adding light fermenting bacteria in the culture medium in order to improve the releasing quantity of hydrogen and recover the production-hydrogen activity of the sea blind fermentation production-hydrogen bacterial. The method not only reduces the pollution of the environment, but also can release the present nervous energy crisis pressure.

The invention belongs to the technical field of chemical composition and particularly relates to an engine coolant. The engine coolant is prepared from the following substances in parts by weight: 45-55 parts of water, 25-35 parts of ethylene glycol, 5-8 parts of carboxylate, 5-12 parts of silicate stabilizer, 1-3 parts of nano oxide, 15-25 parts of propylene glycol, 1-5 parts of cesium formate, 3-5 parts of trimethylglycine, 5-8 parts of citric acid, 5-10 parts of ammonium citrate, 15-25 parts of molybdate, 8-12 parts of fatty acid, 0.5-0.8 part of antifoamer, 15-25 parts of potassium aminopropylsilicate, 5-10 parts of sodium octylsilicate, 5-8 parts of sodium benzoate, 3-5 parts of benzotriazole and 5-8 parts of methylbenzotriazole. The engine coolant provided by the invention is stable in formula, has long-acting bacteriostasis and anti-corrosion capability, is free of high-pollutional substances, cannot cause pollution to environments, has a very good corrosion inhibition action and can be used for effectively protecting engines.

The invention discloses a distributive energy system of a heat engine driven VM circulating heat pump, and belongs to the field of distributive energy systems. The system comprises such parts as a heat engine, a generator, a VM circulating heat pump, a smoke discharge heat exchanger and a fan coil. The heat engine consumes a fossil fuel to drive the generator to generate electricity; and discharged smoke drives the VM circulating heat pump for heating or cooling. In winter, the fan coil system is connected with a room-temperature cavity of the VM circulating heat pump for heating; and in summer, the fan coil pipe system is connected with a cold cavity of the VM circulating heat pump for cooling. Meanwhile, the system is additionally provided with a hot water supply system. The distributive energy system can supply electric power, cold or heat and living hot water, has such characteristics as energy conservation, environmental protection and flexible operation and adjustment modes, and is specifically suitable for small-volume users.

The invention relates to a method for controlling a long-periodic structure to strengthen magnesium alloy matrix crystallization texture through a direct current magnetic field, which comprises the following steps of: 1) melting the magnesium alloy; keeping the melted magnesium alloy warm under a certain degree of superheat; and then placing a preheated die in a direct current magnetic field solidification device, wherein the degree of superheat of the alloy is 10-150 DEG C, and the preheating temperature of the die is 100-700 DEG C; and 2) pouring the melted alloy into the die; switching on a direct current control device in the direct current magnetic filed solidification device after the completion of pouring so as to solidify the melted alloy completely under the effect of direct current magnetic field, wherein the strength of the direct current magnetic field is 0.1-1.0T; and placing the die between two magnetic poles of the direct current magnetic field solidification device, pouring the melted alloy into the die, and carrying out action on the melted alloy through the direct current magnetic field generated between two magnetic poles. The method can control the long-periodic structure to strengthen the magnesium alloy matrix crystallization texture effectively, thus having advantages of being free from contamination, simple in technology, convenient in operation, easy to control and the like.

The invention discloses pectinase and a preparation method thereof and belongs to the technical field of bio-fermentation engineering. The preparation method comprises the following steps: preparing banana peel pomace dry powder, activating strains, preparing seed liquid, carrying out solid fermentation culture, and preparing crude enzyme extracting liquid, wherein the step of activating the strains comprises that aspergillus niger is put into a czapek medium and culture is carried out for 100-120 hours at the temperature of 20-30 DEG C; and the solid fermentation culture comprises the steps of mixing the banana peel dry powder with wheat bran in proportion, adding deionized water, uniformly mixing, then adding ammonium sulfate, dipotassium phosphate and calcium chloride, stirring, charging, carrying out moist heat sterilization for 20-40 minutes at the temperature of 110-125 DEG C, inoculating spore suspension, and culturing for 60-72 hours. The preparation method disclosed by the invention solves the problem of utilization of a main byproduct in a banana deep processing process, preparation technology is simple, cost is low, pectinase activity is high, and juice yield and clarityof common fruit juice can be effectively improved.

The invention discloses a sterilization method for fresh-cut vegetables and fruits in an electromagnetic field. The sterilization method is characterized by comprising the following steps: 1), placing fresh-cut vegetables and fruits into a container, and placing the container in the electromagnetic field; 2) starting the electromagnetic field, heating the fresh-cut vegetables and fruits to 50 to 55 DEG C by adopting continuous microwaves firstly and then processing the fresh-cut vegetables and fruits by adopting pulse microwaves, wherein the power of the continuous microwaves is 700 to 1,000W, the processing times performed by the pulse microwaves are 10 to 90 times, the pulse microwaves are obtained by periodically cutting the continuous microwaves, the working period of the pulse microwaves is 2 to 5 seconds, the duration time of the microwaves in a period is 0.5 to 1.5 seconds, and the fresh-cut vegetables and fruits are the vegetables and fruits which are not sensitive to heat. By adopting the sterilization method, the number of bacteria in the fresh-cut vegetables and fruits and the temperature rise of the fresh-cut vegetables and fruits can be controlled effectively, and the sterilization method has the advantages of being free from pollution, simple, convenient to operate, easy to control and the like.

The invention discloses high-heat environment-friendly biomass and a preparation method therefor. The method comprises the steps: 1) carrying out primary crushing on wastes of agriculture and forestry; 2) feeding the primary-crushed wastes of agriculture and forestry to a finishing crusher through a conveying belt, wherein the diameter of the finishing-crushed wastes of agriculture and forestry isnot greater than 8mm; 3) feeding the finishing-crushed material to a material regulating and mixing bunker through a pumping machine, meanwhile, adding fly ash, a sulfur fixation agent, a combustionimprover, a surfactant and a metal catalyst into a mixer, and carrying out mixing, so as to obtain a mixture; 4) uniformly mixing the obtained mixture and crushed materials in the material regulatingand mixing bunker through a conveying device, so as to obtain a raw material for granulation, wherein the raw material for granulation has the wettability of 12% to 18%; and 5) feeding the raw material for granulation obtained in the step 4) to a press-granulating production machine through a pumping machine, and carrying out granulating, thereby obtaining the high-heat environment-friendly biomass. According to the high-heat environment-friendly biomass and the preparation method therefor, resources are saved, the energy consumption is lowered, and the production value is increased.

The invention discloses a method for preparing alpha high-strength gypsum through an atmospheric pressure salt solution method by using a chlor-alkali by-product salt gypsum and a chemical waste salt.First, the chemical waste salt is dried to remove free water and part of crystallization water, and then sent to a high-temperature incineration apparatus for incineration or high-temperature cracking to remove organic harmful substances, and then the incinerated or high-temperature cracked chemical waste salt is mixed with distilled water in a conical flask to prepare a salt solution; then the chlor-alkali by-product salt gypsum powder and a crystal conversion agent is added into the salt solution, and a water bath reaction is carried out after stirring; and after the water bath reaction iscompleted, solid-liquid separation is performed quickly by a centrifuge and washing is performed with boiling water for several times, then absolute ethanol is added for washing to stop the reaction,then drying is performed in an oven at 60-100 DEG C for 1-5 h, and a final powder, namely the alpha high-strength gypsum powder, is obtained. The product preparation process is simple in operation, low in cost, and suitable for industrial mass production, and has obvious economic and environmental benefits.

The invention relates to a low-melting-point porous foam stone and a preparation method thereof. The low-melting-point porous foam stone is prepared by utilizing two solid wastes--waste glass and waste polished brick slags in cement, glass and ceramic industries as main raw materials and adding a small amount of a low-temperature frit and foaming agent through a proper heat treatment system. According to the invention, 90% of raw materials are derived from industrial waste residues, so waste is turned into treasure; meanwhile, no pollution to the environment is generated in the processes of production and application, so the unity of environmental protection and energy conservation is realized; and an effective method for resourceful reutilization of industrial solid wastes and solving ofenvironmental pollution of the industrial solid wastes is obtained. The foam stone produced by using the preparation method provided by the invention has the advantages of lightweight, porousness, high porosity, fine and uniform pores, good adsorption and water retention, good air permeability, and fireproof and heat-resistant performances. The preparation process for the foam stone provided by the invention has the advantages of simple operation process, low cost, applicability to large-scale industrial production, and significant economic benefit and environmental protection benefit.

The invention provides a preparation method of composite modified banana peel biochar, which comprises the following steps: obtaining first pretreated biochar and second pretreated biochar, and then mixing the first pretreated biochar and the second pretreated biochar to obtain the composite modified banana peel biochar, wherein the first pretreated biochar is banana peel biochar subjected to hydrothermal synthesis treatment of calcium salt and phosphate, and the second pretreated biochar is banana peel biochar subjected to high-temperature carbonization treatment of sulfuric acid and ferric salt. Compared with existing materials, after the composite modified banana peel biochar is applied to thallium, arsenic and lead combined polluted water, the composite modified banana peel biochar has the advantages of being high in adsorption performance, stable in adsorption combination, low in price, environmentally friendly and high in applicability.

The invention relates to a process system for air-blasting dehumidification through smoke waste heat of a hot-blast stove. The process system comprises a dryer, a regenerator, two sets of conveying and lifting devices and a drying agent. A drying agent discharge opening is formed in the bottom of the dryer, an air inlet is formed in the lower portion of the dryer, a drying channel is formed in the middle portion of the dryer, and a drying agent feed opening and an air outlet are formed in the top of the dryer. A drying agent discharge opening is formed in the bottom of the regenerator, a hot-blast stove smoke inlet is formed in the lower portion of the regenerator, a drying agent regeneration channel is formed in the middle portion of the regenerator, and a drying agent feed opening and a hot-blast stove smoke outlet are formed in the top of the regenerator. The air inlet is connected to an air blower, the air outlet is connected to an inlet of the hot-blast stove, a smoke outlet of the hot-blast stove is connected to the hot-blast stove smoke inlet through a preheater, and the drying agent is circularly conveyed in the dryer and the regenerator through the two sets of conveying and lifting devices. The system indirectly dehumidifies air through the smoke waste heat of the hot-blast stove, a low-temperature environment does not need to be provided, pollution to the air cannot be caused, the energy sources are saved, and the blast furnace coke ratio is reduced.

The invention relates to the field of fireproof coatings, in particular to an indoor water-based fireproof coating for an ultrathin steel structure. The indoor water-based fireproof coating is prepared from following raw materials in parts by weight: 10-25 parts of water, 20-35 parts of synthetic emulsion, 0.2-0.6 parts of a dispersing agent, 0.2-0.6 parts of a wetting agent, 0.1-0.5 parts of a defoaming agent, 0.1-0.3 parts of an anticorrosive agent, 0.8-2 parts of a coalescing agent, 5-10 parts of titanium dioxide, 5-10 parts of aluminum hydroxide, 15-25 parts of ammonium polyphosphate, 7-15parts of melamine, 5-10 parts of pentaerythritol, 2-5 parts of expanded graphite, 2-5 parts of a reinforcing agent and 0.4-1 part of a thickening agent. The product is low in processing cost, high inspray coating efficiency, environmentally friendly and easy to transport, compactness and strength of a foaming carbon layer are high, and fireproof performance is high.

The invention belongs to the technical field of composite materials, and particularly relates to a zinc-aluminum hydrotalcite carbon nanotube composite adsorption material and a preparation method andapplication thereof. The preparation method comprises the following steps: adding carbon nanotubes into a three-neck round bottom flask filled with concentrated nitric acid and concentrated sulfuricacid, stirring and reacting in an ultrasonic water bath for 1.5h, cooling to room temperature, filtering by suction and washing, and drying to obtain an intermediate product named CNT-COOH; weighing zinc chloride and aluminum chloride hexahydrate in a beaker, adding deionized water, stirring to dissolve, adding the intermediate product obtained in the step 1), slowly dropping a 2 mol L<-1> NaOH solution at a certain speed, adjusting pH to 10, stirring for 2-5 hours, and carrying out hydrothermal reaction to obtain the target product, Zn/Al-LDH @ CNTs. The method has the advantages of low synthesis cost, simple synthesis method, energy conservation, environmental protection, large adsorption capacity, high adsorption speed, wide application and practical applicability.

The invention discloses an efficient composite biological flocculant for sludge treatment and a preparation method thereof. The efficient composite biological flocculant for sludge treatment comprises, by mass, 10-70 parts of polymerized amino acid, 10-50 parts of animal gelatin, 0.1-20 parts of uronic acid and 0.1-10 parts of composite sulphate chloride PBT. The flocculant is a net-shaped mixturecontaining organic and inorganic high-molecular compounds at the same time. The flocculant and colloidal particles in water form compact and uniform floc through charge neutralization, adsorption, bridging and sweeping. The flocculant has the advantages of being good in product stability, small in use amount, good in flocculation effect, high in treatment efficiency, small in sludge generation amount and the like, is more environmentally friendly compared with polyacrylamide, and can be widely applied to treatment of sewage and wastewater.

The invention discloses a foamed ceramic and ceramic composite integrated brick and a preparation method thereof, wherein mine tailing slag and urban river bottom sludge are used as main raw materials, and are added with a small amount of low-temperature frit and a foaming agent, and proper heat treatment is performed to prepare the foamed ceramic and ceramic composite integrated brick. Accordingto the invention, 90% of the raw materials are all from industrial tailing slag and urban river bottom sludge, so that waste is turned into wealth, no pollution is generated to the environment in theproduction and use process, environmental protection and energy conservation are unified, and the method is an effective method for recycling industrial solid waste and solving environmental pollutionof the industrial solid waste; the produced foamed ceramic-ceramic composite integrated brick has advantages of good adsorption, good water retention, good air permeability, fire resistance and heatresistance, can be directly used for heat insulation of exterior walls, and can avoid the defect of separated construction of heat insulation and water resistance of the traditional exterior wall; andthe preparation process is simple in operation process, low in cost and suitable for industrial large-scale production, and has obvious economic benefits and environmental protection benefits.

The invention relates to a process system for drying blast furnace gas through smoke waste heat of a hot blast stove. The process system comprises a dryer, a regenerator, two sets of conveying and lifting devices and a drying agent. A drying agent discharging port is formed in the bottom of the dryer, a blast furnace gas inlet is formed in the lower portion of the dryer, a drying channel is formed in the middle portion of the dryer, and a drying agent feeding port and a blast furnace gas outlet are formed in the top of the dryer. A drying agent discharging port is formed in the bottom of the regenerator, a hot blast stove smoke inlet is formed in the lower portion of the regenerator, a drying agent regeneration channel is formed in the middle portion of the regenerator, a drying agent feeding port and a hot blast stove smoke outlet are formed in the top of the regenerator. The blast furnace gas outlet is connected to the hot blast stove, the hot blast stove is connected with the hot blast stove smoke inlet through a preheater, the drying agent discharging port of the dryer is connected to the drying agent feeding port of the regenerator through one set of conveying and lifting device, and the drying agent discharging port of the regenerator is connected with the other set of conveying and lifting device. The process system indirectly dries the blast furnace gas through the smoke waste heat of the hot blast stove, no pollution is caused for the blast furnace gas, energy sources are saved, and the calorific value of the blast furnace gas is increased.

The invention discloses a dynamic fermentation system and process for membrane treatment waste gas, the system is mainly composed of a dynamic fermentation unit and a waste gas treatment unit, the dynamic fermentation unit and the waste gas treatment unit are connected through a pipeline to form a dynamic circulation loop, and the waste gas treatment unit comprises a deodorization unit and a blower unit. The dynamic fermentation unit is provided with a fermentation bin. The fermentation bin is provided with a first air inlet and a first air outlet, and the air blowing unit is communicated withthe first air inlet and the first air outlet. The deodorization unit is installed in the dynamic circulation loop, water vapor and carbon dioxide in the waste gas are removed through a deodorizationfilm, then microorganisms and the remaining waste gas are blown into the fermentation bin through the air blowing unit, and finally the microorganisms and the remaining waste gas are automatically absorbed by a pile body. The dynamic fermentation unit is communicated with the waste gas treatment unit, so that the dynamic fermentation system for membrane treatment of the waste gas forms a dynamic fermentation system, dynamic circulation of the waste gas is realized, and the waste gas absorption speed of the pile body is greatly increased. The system can be widely applied to a warehouse storagetype organic raw material fermentation process.

The invention discloses a low-grade waste heat recovery and application technology. A special vacuum heat pipe is introduced to the hot source end for collecting waste heat, the vacuum heat pipe extends towards a terminal user in an upward oblique-pulling mode, middle-end heat exchanging towers are built at certain intervals, the vacuum heat pipe at the previous period transmits the heat energy from the hot source end into the liquid in each middle-end heat exchanging tower, another vacuum heat pipe with the same specification material is additionally introduced in the heat exchanging tower toabsorb the heat energy of the liquid after heating, and cascade heat energy transmission is conducted continuously in the same way; and during storing and using of the terminal, the long-distance transmission can be achieved through cascade heat energy exchanging and transmission, the heat energy transmission of each heat pipe is high in speed and less in system energy consumption, a heat transmitting structure of each heat pipe is simple and easy to operate, automatic and continuous operation can be achieved, a screw-rod-type expansion power generator can still obtain higher internal efficiency under lower volume flow conditions, the fuel is not only saved, the secondary utilization rate of the energy is improved, the environmental pollution can also be reduced, and the energy using andconverting efficiency is high.