105results about How to "No efflux" patented technology

The invention relates to an integrated methane dry fermentation device and belongs to the field of energy conservation. The device consists of two parts, namely an anaerobic fermentation tank 9 of an inner cylinder and a stack retting tank 5 of an outer cylinder; and the anaerobic fermentation tank 9 of the inner cylinder is wrapped by the stack retting tank 5 of the outer cylinder, wherein the stack retting tank 5 of the outer cylinder consists of an outer cylinder feed port 10, an outer cylinder discharge port 16, a heat insulating layer 15, a thermal reflecting film 26, an outer cylinder filter screen 18, an outer cylinder fermenting liquid outlet 25, a liquid storage box 22, an air draft cover 27, an air cap 3, an air guide pipeline 4, a gravel stratum 17 and a net 11; and the anaerobic fermentation tank 9 of the inner cylinder consists of an inner cylinder feed port 6, an inner cylinder discharge port 19, an air outlet 8, a temperature sensor 12, an inner cylinder filter screen 20, an inner cylinder fermenting liquid outlet 21, a temperature controller 13, a liquid storage box 22, an electric heater 24, a circulating water pump 14, a liquid storage pipeline 1, a one way valve 2 and a nozzle 7. The device strengthens a ventilation control system, a liquid stream stirring system and a temperature controlling system of the methane dry fermentation device, has the advantages of reasonable structure, high processing efficiency, energy conservation, convenient subsequent processing, no environmental pollution and the like and is in particular suitable for the methane fermentation of a low-temperature region.

The invention provides a solid high-temperature aerobic fermentation reaction system and method. The system comprises a solid high-temperature aerobic fermentation system, a furnace system, an odor and flue gas treatment system, a detection system and a control system; the solid high-temperature aerobic fermentation system comprises 1-X solid high-temperature aerobic fermentation reactors, and each solid high-temperature aerobic fermentation reactor comprises an oblique horizontally drum, a feed side, a closed labyrinth sealing device arranged on a discharge side, a power supporting wheel set, a stirring anti-sticking device and an integrated base, wherein the horizontal drum is sleeved with a water sleeve, the stirring anti-sticking device is located in the horizontal drum, and the horizontal drum is arranged on the power supporting wheel set; the furnace system comprises a hot water furnace, a circulating water pump, a three-way electric adjusting valve and an electromagnetic valve, and effluent of the furnace system is connected and communicated with clamping sleeves of the solid high-temperature aerobic fermentation reactors; the odor and flue gas treatment system comprises an odor heat exchange condenser, a flue gas heat exchange condenser, a biological deodorizing filter tower, an induced draft fan and an electromagenetic valve; the detection control system is set in the mode that all system sensors output detection signals to be connected with a controller, and the controller controls all the systems to work coordinately. The system conducts reductive, harmless and resourceful treatment on pollutants, is small in occupied area, high in fermentation efficiency and good in environment-friendly effect and is not influenced by environmental factors and a low-temperature condition.

The present invention relates to an energy-saving environment protection apparatus for drying and producing chemical gypsum powder by using tail gas, including a circumversion frying pan (1) and a hearth box (16), wherein the circumversion frying pan is provided with a packing auger feeder (3), characterized in that a tail gas collecting tube (8) is connected with one end of a impulse drying tube (10), the other end of the impulse drying tube (10) is connected with a cyclonic collector (11), a feed end of the cyclonic collector (11) is connected with the packing auger feeder (3), and an exhaust end of the cyclonic collector (11) is connected with a draught fan (14). The beneficial effect of the apparatus is that the gypsum raw material is dried by using the high-temperature tail gas and aqueous vapour generated by the circumversion frying pan. The gas drying contact area is large, and the thermal efficiency is high. The tail gas contains microparticle flue dust which may play a function of the activated carbon to remove yellow, so that the white content of the gypsum powder is improved. The tail gas and the aqueous vapour is purified by a dedusting environment protection apparatus, thus the pollutant will be not discharged outside, and the environment protection effect is good.

The invention relates to an extraction kettle apparatus for separating coal tar, and concretely relates to an extraction kettle apparatus for separating coal tar through a mild extraction method. A strong magnetic stirrer is arranged in the center of a top cover, and a temperature measuring port, a pressure measuring port, a material inlet, an extractant inlet, a nitrogen inlet, a nitrogen outlet, a diffusing port, and valves connected with relevant tube ports are uniformly arranged in the circumference of the top cover respectively; an electric lift type lift tube lightweight component discharging system is arranged at the upper right side of the top cover; two hot steam heating coilers and corresponding hot steam inlets are arranged at the center outside a kettle; the material outlets of downward spreading valves are arranged at the outside surface portion of the kettle, and the downward spreading valves are respectively connected with a glass sight cup; three groups of sight glasses are arranged at the center outside the kettle; an interlayer heat insulation layer is arranged at the center outside the kettle; and a steam outlet, a material outlet and a valve are arranged at the bottom of the kettle. The apparatus has the advantages of simple operation, obvious energy saving and consumption reduction, high solvent recovery rate, easy automatic operation, low-carbon clean production, low investment cost, and less discharge of waste residues, the exhaust gas and wastewater.

The invention discloses a co-production method and system of ammonium phosphate and magnesium hydrate, belonging to the technical field of fertilizer production. The method comprises the following steps: raising the temperature of phosphoric ore pulp containing magnesium to 40-60 DEG C, adding a de-magging agent, reacting for 2-3 hours, controlling the pH value of slurry at the finished point at 4.5-5.0, and carrying out solid liquid separation, wherein the solid phase is used for producing phosphoric acid while the liquid phase is recycled to be used as a de-magging agent and / or enters into a magnesium hydrate production device; and feeding the obtained liquid phase isolate into the magnesium hydrate production device, carrying out reaction with ammonia for primary sedimentation, reacting for 20-40 minutes by controlling the pH at 8.5-9.5, and carrying out solid liquid separation, wherein a primary filter cake enters into an ammonium phosphate production device while a primary filtrate cake is reacted with ammonia for secondary sedimentation, the reaction temperature is 35-50 DEG C, the reaction pH is 9.5-10.5 and the reaction time is 2-3.5 hours; and carrying out solid liquid separation, wherein a secondary filter cake is used for magnesium hydrate and a secondary filtrate is used for a defibrinating process of the phosphoric ore pulp containing magnesium or / and washing and de-magging to obtain a solid phase isolate.

The invention discloses a passivating agent and a repairing method for in situ repairing of heavy metal cadmium in soil. The raw materials of the passivating agent comprise biochar, treated bacterium residues and modified sepiolite. The raw materials of the passivating agent have sufficient sources, and the process flow meets production requirements of enterprises, so preparation of a large amount of the passivating agent can be ensured. The passivating agent can significantly inhibit the activity of heavy metal cadmium in farmland soil and reduce the content of heavy metal cadmium in the edible parts of agricultural products, can be applied to the in situ passivation repairing of medium-light cadmium polluted farmlands at a large scale, and has a broad application prospect in the field of improvement of the safety productivity of medium-light cadmium polluted farmlands s.

The invention relates to a method for recycling tin from a tin alkali solution. The method comprises the following steps: stirring the tin alkali solution at a rotation speed of 300-800r / min; adding an additive and metal zinc powder, and reacting for 0.5-2 hours at a temperature of 15-95 DEG C, wherein the adding amount of the additive is 0.01%-2% the adding amount of the metal zinc powder, the adding amount of the metal zinc powder is 1-4 times the molar weight of tin in the tin alkali solution; after the reaction is ended, stopping stirring, filtering, reducing concentration of tin in filtrate to be lower than 100mg / L, and directly electrolyzing the filtrate to produce metal zinc powder, wherein filter slag is coarse tin with content being greater than or equal to 85%; using the metal zinc powder obtained by electrolyzing to replace tin in the next-batch tin alkali solution, so that the production cost is reduced, and the electrolysis waste liquor is recycled for leaching tin-containing materials to prepare the tin alkali solution, and no waste liquor is exhausted. The method is simple in replacement reaction condition, is not high in temperature, is quick in replacement, and the obtained tin is great in purity, is great in value; and the additive is wide in source, is cheap and easily available, and is less in dosage.

The invention discloses a method for treating epichlorohydrin waste water. The method comprises the following steps: degrading organic pollutants by adopting ABR anaerobic treatment / BAC aerobic treatment / MBR aerobic treatment; for MBR effluent water, treating surplus organic compounds through combined usage of deep oxidation of an oxidizer and adsorption with activated carbon; for deep oxidation effluent water, performing electrodialysis concentration, performing MVR evaporation concentration on electrodialysis concentration liquid, using MVR condensate as dilution water, enabling an MVR concentrated solution to reach to the standard of ion film caustic soda for recycling; and performing reverse osmosis on electrodialysis light liquid for desalting, using reverse osmosis light liquid as dilution water for recycling, and enabling reverse osmosis strong liquid to return to a deep oxidation technology. Clean water produced in the whole technology of the method disclosed by the invention is completely used as dilution water, inorganic salts in the epichlorohydrin waste water can be completely recycled to be used for an ion film caustic soda technology, the purpose of resource utilization of water and salts is achieved, the whole technology is effective to implement, the operation is flexible and convenient, the resource utilization of the water and the salts for the epichlorohydrin waste water can be achieved, discharge is not needed, and no adverse effect on environment is generated.

The invention relates to a complete set of equipment and a method for separating high-temperature coal tar components via a low-temperature rapid extraction method, and belongs to the complete set of separation equipment and the method for extracting the high-temperature coal tar. The complete set of equipment comprises two kettles and four jars: a coal tar extraction kettle, a light oil solution buffering jar, a filtering jar, refined light oil solution buffering jar, a distillation kettle and a solvent storing jar. The method comprises the following steps: extracting the coal tar to obtain heavy asphalt; filtering a refined light oil solution; and distilling the refined light oil to obtain the refined light oil. The equipment and the method have the advantages that the separation of light and heavy components in the coal tar is realized rapidly; the operation condition is moderate; the separation process is advanced; the separation efficiency is high; and the separation depth and the treatment quantity of the coal tar can be mastered flexibly and controlled selectively by changing an extraction agent, the adding amount of the extraction agent as well as the parameters of the extraction operation. The equipment and the method provided by the invention are simple and convenient to operate, obvious in energy conservation and consumption reduction, high in solvent recovery rate and easy in automatic operation, realize low-carbon clean production and are low in investment cost as well as nearly free of discharging waste residue, waste gas and waste water.