72results about How to "Lower emissions targets" patented technology

The invention discloses a high-efficiency and environment-friendly coal-fired system for a vertical boiler with a bottom-built burner. The system comprises a coal powder tower, a burning boiler, an air preheater mechanism, a cyclone dust collector mechanism and a bag-type dust collector mechanism that are sequentially arranged and connected, wherein the burning boiler comprises a boiler body and the bottom-built burner; the bag-type dust collector mechanism comprises a sealed casing, a high-efficiency dust collector and an ash storage bin; a fume outlet of the sealed casing is connected with a tower fume outlet of a desulfurizing tower by an induced fan; and a discharge outlet of the ash storage bin is connected with an ash inlet of a coal powder ash tank by a conveying mechanism. As the coal-fired system is subjected to a series of technological innovations and transformations, the boiler thermal efficiency is very high; the dust collection sealability is good; the collection efficiency is excellent; the desulfurizing tower is very good in desulphurization efficiency, and excellent in scale prevention and scale removal performance; the high-efficiency desulfuration and labor saving are ensured; finally a fume emission index of the system is far lower than the national specified emission concentration; and the system achieves the benefits of high efficiency, energy saving, emission reduction and environmental protection, and is a domestic initiative.

The invention discloses a recycling method of papermaking advanced treatment wastewater based on chemical decalcification. The recycling method comprises the following steps of chemical decalcification, filtering, electrolysis, membrane separation (ultra-filtration/MBR) and desalination. By combination of a chemical decalcification technology, an electrochemical technique and a membrane technology, 70-85% of papermaking advanced treatment wastewater can be recycled after being processed. Thus, wastewater emission is reduced; environmental pollution of the wastewater is avoided; waste of water resources is reduced; and the cost of regenerated circulating water is lower than the price of running water. Therefore, the recycling method is economical and reasonable; good economic benefit is generated; water consumption targets of tons of paper and wastewater discharge targets are greatly reduced; and the economic and technical indexes of enterprises are improved.

The invention discloses a combustion mode control system of a gasoline premixing and diesel igniting engine and a control policy thereof. After an electronic control unit acquires the cooling water temperature, the air inlet temperature, the air flow, the engine crankshaft rotating speed and the accelerator pedal position information to judge the operating conditions of the engine, action commands are sent to a gasoline injector and a diesel injector to control the combustion mode of the engine; the operation steps are as follows: (a) the automobile operation state is judged; and the corresponding engine combustion mode is selected; (b) the engine load state is judged, and the corresponding engine combustion mode is selected; and (c) when the engine is positioned in the working condition of medium load, the engine combustion mode is selected. The dynamic performance and the economic performance of automobiles are guaranteed; and the nitric oxide and PM discharge indexes are reduced.

The application discloses a discharge system and process of refuse incinerator flue gas. The process includes the steps of denitrifying; removing acid gas and divalent mercury compounds by a semi-dryprocess; carrying out activated carbon adsorbing and dry powder deacidifying; removing dust; carrying out flue gas heat exchanging; decomposing pollutants by low temperature plasma; carrying out wet deacidifying. The system and process herein are suitable for synchronous and efficient deep removal of various pollutants (including particles, nitric oxides, sulfur oxides, dioxin, hydrogen chloride,hydrogen fluoride, mercury and other heavy metals), and can provide ultralow-concentration discharge of refuse incineration flue gas, with NOX<50 mg/Nm<3>, SO2<35 mg/Nm<3>, dioxin TEQ<0.01 ng/Nm<3>, and discharge indexes of HF, HCl, mercury and other heavy metals greatly decreased.

A tanning wastewater recycling device and method based on electrochemistry and ultrafiltration relate to the treatment of one kind of wastewater. The invention provides a tanning wastewater recycling device and method based on electrochemistry and ultrafiltration, wherein the device and method have high CODCr removal rate (chemical oxygen demand), low chemical agent consumption, low sludge yield, thorough treatment and high water reuse rate. The device is provided with a grid filter, an adjusting pool, a hydraulic sizer, a nanocatalysis electrolysis flocculating machine, a sedimentation tank, an air floatation device, a biochemical tank, a secondary sedimentation tank, a secondary nanocatalysis electrolysis flocculating machine, a filter and a filter press. The method comprises the steps of flocculation and filtration, nanocatalysis electrolysis, sedimentation, air floatation, biochemical treatment, secondary catalysis electrolysis, filtration and ultrafiltration.

The invention discloses a reclaiming method for cast waste sand hot plasmas. The reclaiming method includes the technical processes of waste sand pretreatment, hot plasma roasting, cooling and screening. According to plasma roasting, a resin film, an inorganic film and harmful impurities of metallic oxides such as sodium and potassium on the surface of waste sand are removed under the action of the high temperature, thermal shocks and surface melting of a hot plasma torch, and therefore high-performance cast reclaimed sand is obtained. The average temperature of the hot plasma torch is 2000-4500 DEG C, the surface temperature of the waste sand is 1000-3000 DEG C, and the heating time of the waste sand is 5-60 minutes. The reclaiming recycling rate of the reclaiming method is larger than or equal to 85%, the performance index of the reclaimed sand is superior than that of isogenesis new sand and reclaimed sand obtained through other reclaiming methods, the reclaimed sand can be completely recycled and reused through a casting plant, the tail gas exhaust index is far lower than the exhaust standard of China, Europe and America, the amount of generated fine powder is greatly reduced, and due to the high temperature and ionization action, the reclaimed sand is free of pollution and safe to the environment and can be directly used as the recycled building material.

The invention relates to a valve lift continuous variable mechanism of an engine gas distribution system; the mechanism is used for realizing the continuous changes of the valve lift of an engine, and comprises a group of valve lift continuous change control units with the number matched with that of engine cylinders, wherein each valve lift continuous change control unit is provided with a cam, a rocker, a rocker shaft and a valve; and the mechanism is characterized in that a slider I is sleeved in the middle of the rocker shaft, the slider I is hinged with the rocker shaft, the middle part of the rocker is provided with a rocker guide rail in a cavity structure, and the slider I can slide in the rocker guide rail. According to the valve lift continuous variable mechanism of the engine gas distribution system, when the molded line of the cam is unchanged, the valve lift can be changed continuously, so that the purpose of matching with the complicated changeable working conditions of the engine is achieved, the oil consumption and the emission indicator of the engine are reduced, and the dynamic performance is fully displayed. The valve lift continuous variable mechanism of the engine gas distribution system has a wide scope of application, is matched with the variable-valve-timing (VVT) system of the engine, realizes the application of gas distribution phase and the fully variable technology of the valve lift, has a compact structure, and is convenient for the deployment of the engine in a cabin.

The invention relates to an oil-gas recycling device based on a glassy-state membrane separation-absorption process, which mainly solves the problems of poor oil-gas separation effect and high concentration of emitted tail gas in the prior art. The oil-gas recycling device is characterized in that an oil-gas inlet pipeline is connected with an inlet of an induced draft fan, and an outlet of the induced draft fan is connected with an inlet pipeline of a condensate tank; a gas-phase outlet of the condensate tank is connected with the inlet side of a glassy-state membrane assembly, the permeation side of the glassy-state membrane assembly is connected with an inlet of a vacuum pump, and the retentate side of the glassy-state membrane assembly is connected with an absorption tower; a top outlet of the absorption tower is connected with the inlet pipeline of the condensate tank, a bottom outlet pipeline of the absorption tower is connected with a tube pass inlet of a heat exchanger, a shell pass inlet of the heat exchanger is connected with a lean oil inlet pipeline, a shell pass outlet of the heat exchanger is connected with an inlet of a condensing unit, an outlet pipeline of the condensing unit is connected with the absorption tower. According to the technical scheme, the problems are well solved, and the oil-gas recycling device can be applied to recycling of hydrocarbon steam.

The invention discloses a direct-heating hot water boiler which is composed of a boiler body, a fume pipe, a combustor, filler, a chimney and the like. The boiler body is of a vertical cylindrical structure and is divided into a filler chamber and a water storage chamber through a supporting partition plate. The fume pipe is located on the middle lower portion of the water storage chamber. Heat dissipation fin plates are installed on the outer wall of the pipe, and the heat exchange area can be increased. An exhaust pipe is assembled to the upper portion of the filler chamber, so that smoke is exhausted upwards evenly. A water blocking cap is used for preventing water from entering the fume pipe. An inlet water distributor is arranged in the filler chamber, so that water is sprayed downwards evenly. Through a temperature-resistant filtering cotton plate, residual water in the smoke can be filtered out and returned back to the water storage chamber. According to the direct-heating hot water boiler, the one cavity design is adopted, the structure is compact, and materials are saved and are about one quarter those of an ordinary boiler; the size is small, the space is saved, the manufacturing cost is low, through the structure, secondary heat exchange can be conducted, and the heat efficiency reaches 97% or over; and smoke exhaust indexes are higher than national standards, the smoke exhaust temperature is lower than 50 DEG C, and the heat efficiency is greatly improved.

The invention provides kitchen waste recovery equipment, and belongs to the technical field of garbage disposal. The kitchen waste recovery equipment comprises a cabinet body, a waste disposal unit and a purification unit, and the cabinet body is provided with a water pool. The waste treatment unit is arranged in the cabinet body and comprises a crushing assembly communicating with the water pool and a storage assembly communicating with the discharging end of the crushing assembly. . The purification unit communicates with the crushing assembly and comprises an oil-water separator for separating oil stains from water. The kitchen waste recovery equipment provided by the invention can be used for processing, treating and recovering kitchen wastes, reducing the pollution of kitchen household garbage to environment, greatly reducing the COD discharge index of urban sewage, reducing the strength and difficulty of urban sewage treatment, reducing the use of chemicals in the urban sewage treatment process, and realizing effective utilization of resources. The kitchen waste recovery equipment is reasonable in structure, and is safe and reliable, and the popularization and application value is extremely high.

The invention discloses a remote automatic control method for an enamelling machine. The method comprises the steps that an operator can manually set the upper and lower bounds of the temperature of each temperature control point through a touch screen, and set the rotating speed (rpm) of a motor; all monitoring parameters should have the early warning function, and a sound-light alarm should be given when the monitoring value exceeds the preset range; the automatic control starts from a temperature rising program to be carried out, then adjustment and control are carried out, and historical technological records can be stored in the control method to be prepared to be called; the remote automatic control method can achieve communication between a remote communication device and a remote host, and can carry out data transmission and final management. Compared with the prior art, the remote automatic control method for the enamelling machine can be grasped by operators without rich experience, is accurate and timely in control, visual in display and beneficial to concentrated control, and power consumption and emission targets are much lower than the national standard.

The invention discloses a burner and a gas stove. The burner comprises a furnace end; a through hole is formed in the middle of the furnace end; a baffle is arranged in the through hole and blocks thethrough hole; and a dry burning preventing assembly is arranged in the through hole. The central hole of the burner is blocked to prevent soup and dirt from falling into the gas stove shell in the cooking process.

The present invention discloses an universal gasoline-diesel internal combustion engine. A combustion chamber (16) is a high compression ratio combustion chamber. An explosion preventing and energy storing device which is communicated with the high compression ratio combustion chamber (16) is arranged on a cylinder cover (17). The energy q1of Pbz max larger than the allowed combustion pressure P1z during the combustion process is stored by the explosion preventing and energy storing device of the present invention to eliminate peak value and avoid detonation; when a piston descends, the stored energy q1 is transferred into q2 to be discharged under a controlled condition to form an isobaric combustion area between P1z and P2z, so as to obtain a full indicating diagram. The universal gasoline-diesel internal combustion engine is not provided with an electronic ignition system, processes for compression combustion ignition by high temperature produced by high compression ratio and has the advantages of good dynamic preoperty, economical efficiency and discharging performance, and the universal gasoline-diesel internal combustion engine is particularly advantaged under cold start, idle speed, warming up and low load and low temperature. When the universal gasoline-diesel internal combustion engine is applied to a diesel engine, the universal gasoline-diesel internal combustion engine also can improve the discharge and eliminate the influence caused by rough combustion, is good for the diesel engine to develop towards light weight and high speed and improves the performance of the diesel engine completely.

The invention discloses a waste gas purification process and purification system, which comprises a combustion furnace, a bag type dust remover, a high-temperature section of a smoke gas heat exchanger, a precooler, a washing tower, a low-temperature section of the smoke gas heat exchanger and a chimney in sequential communication through a smoke gas pipeline, wherein a power spraying mechanism isarranged between the combustion furnace and the bag type dust remover; a spray nozzle of the powder spraying mechanism is arranged in the pipeline; a filling material layer, an alkali liquid sprayer,a secondary alkali liquid sprayer, a water mist sprayer and a mist eliminator are sequentially arranged inside the washing tower from bottom to top. The smoke gas is sequentially subjected to lime hydrate and active carbon spraying, filtering, temperature reduction, alkali liquid spraying, secondary alkali liquid spraying, water mist spraying, mist elimination and temperature rise; acid gas, dioxin and heavy metal can be effectively eliminated; the operation is simple, so that the discharge index can be greatly lower than the environmental protection standard level; meanwhile, the smoke gas heat exchanger is used; the smoke gas afterheat is effectively utilized; the heat utilization efficiency is improved; the waste gas treatment cost is effectively reduced.

A clean fuel that replaces diesel oil. The invention provides a liquid fuel that has high calorific value, good environmental performance and can replace existing diesel oil. The composition of this product includes: solvent oil, methanol, C ₁₇ , water, dimethyl ether, amyl nitrate, the weight ratio of the components is solvent naphtha 30-45%; methyl alcohol 20-35%; C ₁₇ 25-30%; water 2-5%; dimethyl ether, amyl nitrate 3-5%. The invention is applicable to various diesel vehicles, household vehicles, tractors and other diesel engines as fuel oil.

The invention provides a distributed control system for car-bottom type heat treatment furnace groups. The distributed control system comprises slave station cabinets, a master control cabinet and at least one heat treatment furnace. The slave station cabinets are arranged on the heat treatment furnaces, each heat treatment furnace comprises a furnace door, a lifting mechanism, a furnace body and a heat-insulation system, each furnace door is connected with the corresponding lifting mechanism, each lifting mechanism is arranged on the corresponding furnace body, each heat-insulation system is arranged in the corresponding furnace body, each furnace body is provided with an air pipeline, a gas pipeline, a smoke discharge pipeline and a burner, both each air pipeline and the corresponding gas pipeline are connected with the corresponding burner, and each smoke discharge pipeline is communicated with the corresponding furnace body. The distributed control system for the car-bottom type heat treatment furnace groups has the advantages that the slave station cabinets are communicated with the master control cabinet via profibus-DP (process field bus-DP), accordingly, large quantities of connecting cables which extend from the slave station cabinets to the master control cabinet can be omitted, the structure of the distributed control system can be simplified and integrated, the distributed control system can be operated conveniently and flexibly, a large quantity of cost can be saved, maintenance workload can be greatly relieved, and the furnace groups can be assuredly smoothly controlled in a centralized manner.