30results about How to "Reduce emission content" patented technology

The invention provides a multi-point water feeding town sewage treatment system and a treatment method thereof so as to overcome the problems of sludge age contradiction between nitrobacteria and phosphorus-accumulating bacteria and competition for a carbon source among different populations of microbes in a traditional A2/O process and to improve nitrogen and phosphorus removal effects of process operation. The multi-point water feeding town sewage treatment system provided by the invention comprises a raw water tank. The raw water tank is respectively connected with an anaerobic tank and an anoxic tank through peristaltic pumps; a water outlet of the anaerobic tank and a water outlet of the anoxic tank are connected with an aerobic tank, and a water outlet of the aerobic tank is connected with a sedimentation basin; a nitrification liquid outlet of the aerobic tank is connected with a nitrification liquid return pipe and the anoxic tank through peristaltic pumps; the lower part of the sedimentation basin is respectively connected with a sludge discharge pipe and a sludge return pipe through valves, and the sludge return pipe is connected with the anaerobic tank through one peristaltic pump; the lower part of the aerobic tank is connected with an air compressor through an aerator pipe; and the interiors of the anaerobic tank and the anoxic tank are respectively provided with a stirrer.

The invention relates to a solid waste two-stage pyrolysis gasification system based on a fluidized bed and a moving bed. The system comprises a circulating fluidized bed vaporizer and a secondary cyclone separator thereof, a pyrolyzer and a cyclone separation type reactor thereof, a charcoal collector, a solid waste feed system and the like. The circulating fluidized bed vaporizer and the pyrolyzer of the moving bed are used to realize two-stage pyrolysis gasification, and the cyclone separation type reactor is used to sufficiently mix hot bed materials and pyrolysis gas, thus greatly promoting tar splitting and gas purification. Through optimally designing the vaporizer and pyrolyzer structure form, mixing different bed materials for use, improving a bed material circulation flow system and gas solid mixing level, and improving the feed system, synthesis gas and the pyrolysis gas are produced simultaneously, the overall pyrolysis gasification efficiency and a pyrolysis gas heat value are greatly improved and increased, tar content in the synthesis gas and the pyrolysis gas is reduced, and the synthesis gas and the pyrolysis gas do not contain pollutants such as dioxin, thus effectively preparing the high-quality clean pyrolysis gas and synthesis gas.

The invention relates to a hearth of a four-corner tangential boiler. Four groups of combustors are arranged in the hearth and are respectively arranged at four corners of the hearth; each group of the combustor comprises four groups of primary air nozzles, five groups of secondary air nozzles, a compact overfire air nozzle and a separation overfire nozzle along the height direction of the hearth; the four groups of primary air nozzles and the five groups of secondary air nozzles are arranged at intervals. The uppermost layer of the hearth of the four-corner tangential boiler adopts separation overfire air, and a deflection secondary air technology is adopted for part of the secondary air nozzles, so that the NOx emission content can be reduced, and the combustion efficiency can be improved; a main combustion region on the lower part can enable deflection secondary air to form a layer of air film near a water-cooling wall surface under an oxygen deficient condition, so that the phenomena of slagging and high-temperature corrosion of a water-cooling wall can be prevented; meanwhile, overtemperature pipe explosion of a water-cooling wall pipe is prevented favorably. Furthermore, the invention also relates to the four-corner tangential boiler with the hearth.

The invention discloses a three-bed combination pyrolysis gasification and tar cracking integrated system for solid waste and belongs to the technical field of solid waste treatment. The system comprises a solid waste feeding system, a pyrolyzer, an oxidizer system, an oxidizer cyclone separator and a cyclone reactor. According to the system, the circulating flow of bed materials among three bed is realized by virtue of a circulating fluidized bed oxidizer, a bubbling or turbulent fluidized bed pyrolyzer and the cyclone reactor which are combined with a gas stripping tube and a sedimentation tube, and the adequate mixing between the hot bed materials and pyrolysis gas is realized by virtue of the cyclone reactor, so that the tar cracking and the gas purification are greatly promoted; by virtue of structural optimization of an oxidizer and the pyrolyzer, the mixed use of different bed materials and the improvements of a bed material circulating flow system, the gas-liquid mixing level and a feeding system, the integral pyrolysis gasification efficiency is greatly improved, the heat value of product gas is greatly increased, the tar content of product gas is greatly reduced, and high-quality clean pyrolysis gas/synthesis gas is prepared.

The invention discloses a method for preparing an environmental-friendly waterborne ceramic coating. The environmental-friendly waterborne ceramic coating is prepared from a base stock, a filler, deionized water and an additive, wherein the base stock is mainly liquid silicate, the filler is mainly aluminium powder, and the aluminium powder is pretreated to improve the stability of the coating tothe great degree; and the additive is mainly prepared from a coupling agent, a corrosion inhibitor, a thixotropic agent, a surfactant, a defoaming agent and the like, and the environmental-friendly waterborne ceramic coating is prepared through the processes of stirring and sanding. The environmental-friendly waterborne ceramic coating has the characteristics of being environmental-friendly, non-toxic, free of pungent odour, low in VOC emission, simple in construction procedure, and widely applied in multiple fields. The environmental-friendly waterborne ceramic coating has high surface adaptability to the base stock, the adhesive force of the coating is strong, and the environmental-friendly waterborne ceramic coating has good metal luster and high performances of self repairing, high temperature resistance, salt fog resistance, abrasion resistance, corrosion resistance, thermal shock resistance, static electricity resistance, mildew resistance and water resistance, and the like.

The invention provides an ammonia recycling method and a system in APT production process. The ammonia recycling method comprises following steps: 1, APT crystallization steam is discharged using a centrifugation blower fan, is introduced into a rectifying tower for rectification and condensation of ammonia tail gas to remove most water, and is introduced into a heat exchanger; 2, a three stage solution obtained via ion exchange is directly used for preparing a desorption agent, the rest ammonia nitrogen wastewater is pumped into a stirring tank, an alkali is added for ammonia activation, andgenerated ammonia tail gas is introduced into the heat exchanger; wastewater obtained via ammonia activation is pumped into an air stripping tower, and ammonia tail gas obtained via air stripping is introduced into the heat exchanger; when the ammonia-nitrogen value of obtained air stripping wastewater is detected to be qualified, discharging through a branch pipe is carried out, otherwise, the wastewater is pumped into the air stripping tower for air stripping; and 3, the temperature of the ammonia tail gas is reduced to be lower than 45 DEG C after treatment using the heat exchanger, the ammonia tail gas is introduced into a hydrochloric acid absorbing tower for circulating absorption, and an obtained solution is sent back to the main treatment stream directly for preparation of the desorption agent. The ammonia recycling method and the system are used for comprehensive treatment of ammonia nitrogen wastewater waste gas obtained in tungsten smelting, waste is changed into valuables,the method flow is simple, operation is convenient, the method is easy to control, and cost is low.

The invention discloses a combustion decoupling coal and preparing method, which comprises the following parts: fire coal made of bituminite and anthracite with weight rate at 70-80: 30-20, stable composite liquid composed of stabilizer solution and soluble glass with weight rate at 17-23: 83-77 and the weight percentage density of the stabilizer at 0. 08%-0. 12%, methyl hydroxypropylcellulose as the stabilizer; using calcium lime as sulfur fixing agent with content as 1. 4-1. 8 times as fire coal, 1%-2% potassium nitrate combustion adjuvant. The invention has stable source for raw material of molded coal, good using and storing property, low preparing cost, which realizes desulfurizing, denitrating, dedusting and environment protection, which can replace fuel to reduce combusting cost greatly and release insufficiency of the fuel.

The invention provides an all-terrain vehicle and an all-terrain vehicle control method. The all-terrain vehicle comprises a hybrid power system, a transmission mechanism and an axle, wherein the hybrid power system is in driving connection with the transmission mechanism; the transmission mechanism is in driving connection with the axle so as to enable the hybrid power system to drive the axle tomove through the transmission mechanism; and the hybrid power system is a parallel hybrid power system. According to the all-terrain vehicle, the problem that the harmful gas emission content of an all-terrain vehicle in the prior art is high is solved.

The invention discloses a triphenyl phosphite processing and tail gas treating technology based on a graphite condenser. The graphite condenser is arranged to reduce the metal ion content of triphenylphosphate, greatly shorten the distillation time and reduce the side reactions of semi-finished triphenyl phosphate, so the precision of the triphenyl phosphate can reach 99.5% or more, the color ofthe triphenyl phosphate is improved, customer needs are met, and the energy consumption required for distillation is greatly reduced; a falling film generator is lifted up to greatly increase the absorption efficiency of esterified hydrogen chloride tail gas, and subsequent water washing, alkali washing and activated carbon adsorption are combined to reduce the content of toxic hydrogen chloride tail gas emission; and gas-liquid classification, alkali washing and activated carbon adsorption of distillation vacuum pump exhaust gas generated in the distillation process are also arranged, so thetechnology has the advantages of improvement of recycling of benzene liquids, reduction of the concentration of the tail gas, energy saving, environmental protection, reliable process, ensuring of thequality of triphenyl phosphite, and good application prospect.

The invention discloses an atmospheric combustion low-nitrogen wall-hanging furnace which is characterized by comprising a furnace body, the device comprises an exhaust fume collecting hood assembly, a heat exchanger, a heating water outlet pipe assembly, a heating water inlet pipe assembly, a water inlet valve assembly, a main controller, a segmented fuel gas proportional valve, a heating water return pipe fitting, a circulating water pump, a gas inlet pipe assembly, an atmospheric combustion low-nitrogen combustor, an up-draft direct-current fan and an ignition needle assembly. The up-draft direct-current fan is fixed in the exhaust fume collecting hood assembly, and the main controller is connected with the up-draft direct-current fan; the heat exchanger is installed below the exhaust fume collecting hood assembly, and water heated by the heat exchanger flows out through the heating water outlet pipe assembly. The ignition needle assembly is of a three-needle integrated structure, is installed on the outer side of the atmospheric combustion low-nitrogen combustor and has the ignition and flame feedback functions. The device is simple in structure, better in cost performance, easy to control and relatively low in technical requirement.

The invention provides a metal re-forming assembly line. The assembly line is characterized by comprising multiple smelting furnaces which communicate with one another, a casting cavity and a drainagegroove used for draining molten metal into the casting cavity, smelting cavities are formed in the smelting furnaces, one end of the drainage groove communicates with each smelting cavity, the otherend of the drainage groove communicates with the casting cavity, in the flowing direction of the molten metal, the casting cavity is located on the downstream portions of the smelting furnaces, a worktable is arranged in the casting cavity, a conveying assembly and multiple workstation modules are arranged on the worktable, each workstation module comprises an imaging workstation block, a deburring workstation block and an image processing assembly, each imaging workstation block comprises an imaging instrument, a lens of each imaging instrument faces the conveying assembly, the imaging instruments are in communication connection with the image processing assemblies, each deburring workstation block comprises a deburring gun and a driving device for driving the deburring gun to move relative to the conveying assembly, the driving devices are in communication connection with the image processing assemblies, according to the assembly line, the production efficiency is improved, labor force is reduced, and the automatic intelligent degree is high.

The invention belongs to the field of a device for producing food-grade CO2 through NH3/CO2 cascade refrigeration and a production method. The device comprises a compressor which is connected with a raw material gas pipeline, an outlet of the compressor is connected with a first raw material gas inlet of a first flash tower through a drier, a gas phase outlet at the top of the first flash tower is connected with a first raw material gas inlet of a second flash tower through a first tee, and a liquid phase outlet at the bottom of the second flash tower is connected with a food-grade CO2 storage tank. The device and the production method have the advantages that the energy consumption for producing the food-grade carbon dioxide through the same-type raw material gas can be reduced by 10%, and the emission content of the carbon dioxide in tail gas can be reduced to 60% or below.

The invention belongs to the technical field of nitric oxide tail gas purification towers, and particularly relates to a three-stage tail gas purification tower for high-concentration nitric oxide. The tower comprises a tower body; a gas inlet pipe is fixedly connected to the center line of the tower body and in the inner wall below the tower body; a filter plate is fixedly connected into the inner wall of the tower body, and a purification cavity is formed below the filter plate; an adsorption liquid is contained in the purification cavity; blocky flourishing carbon is contained in the purification cavity; and a motor is fixedly connected to the upper end surface of the filter plate and located at the center line of the filter plate, and the motor is electrically connected with a controller through a wire. The tower is mainly used for solving the problems that a nitric oxide purification tower device in the prior art is large in occupied area, moving and overhauling are inconvenient,meanwhile, high-concentration NOx treatment needs to be supplemented with air to be diluted, the process steps of the nitric oxides are increased, waste water and waste residues are prone to being generated, the generated waste water and waste residues need to be subjected to secondary treatment, and the process steps of nitric oxide purification are increased.

The invention relates to a method for recovering and extracting hydrogen based on discharged torch waste gas, which comprises the following steps: 1) transformation: carrying out transformation treatment on the waste gas by using a sulfur-tolerant cobalt transformation catalyst, mixing steam and the waste gas in a mixing tank, entering a transformation bed to carry out transformation reaction, and converting CO into hydrogen through the transformation reaction; 2) decarburization: entering an adsorption bed for decarburization, removing most of ineffective components in the converted gas, and performing high-pressure adsorption and low-pressure desorption; and 3) separation and purification: separating the decarbonized waste gas, adopting a single-bed adsorption procedure, and filling adsorbents activated aluminum oxide, activated carbon and molecular sieves in an adsorption bed. The method is free of raw material cost, a novel catalyst and an adsorbent are used according to the composition of the waste gas, and hydrogen with the purity larger than or equal to 99.8% is extracted. The C emission content and the comprehensive energy consumption of the production line are reduced while the operation cost of the production line is reduced. The economic and social benefits are obvious.