51results about How to "Lower emission rate" patented technology

A combustor for a gas turbine engine of a lean premixed combustion type, includes: a fuel jetting device configured to jet a premixed fuel into a combustion chamber so that the premixed fuel burns in a premixed combustion zone which is formed in the combustion chamber; and an additive fuel supply unit disposed downstream of the premixed combustion zone so as to additionally supply fuel into the combustion chamber. The additive fuel supply unit includes first and second additive fuel supply devices disposed in a two-stage arrangement such that the second additive fuel supply device is positioned downstream of the first additive fuel supply device.

The invention discloses a high-protein-content growth-promoting environment-friendly fish feed. The high-protein-content growth-promoting environment-friendly fish feed comprises the following raw materials: bean cakes, cotton meal, corns, bran, fish meal, rapeseed cakes, spirulina powder, seaweed powder, wheat middling, polygonatum sibiricum powder, fish oil, calcium lactate, calcium dihydrogen phosphate, lysine, methionine, aspartic acid, glutamic acid, a vitamin mixture, minerals, phytase, synbiotics, a traditional Chinese medicine compound additive and a food attractant. The high-protein-content growth-promoting environment-friendly fish feed is rich in nutrition, and rich in contents of proteins, amino acids, vitamins, probiotics and growth substances; thus, the high-protein-content growth-promoting environment-friendly fish feed is capable of effectively promoting growths and breeding of the fishes, and improves yields and qualities of the fishes.

The invention relates to the technical field of chemical engineering and particularly relates to a production method of dipotassium phosphate. The method comprises the following step: carrying out a reaction on urea phosphate and potassium hydroxide in a stirring manner for 20 to 70 minutes by controlling a reaction temperature within 50 DEG C to 90 DEG C and controlling a pH (Potential Of Hydrogen) value at a final point of the reaction within 8 to 9.5 so as to prepare the dipotassium phosphate product. The produced dipotassium phosphate product completely conforms to the standard of food-grade dipotassium phosphate by controlling the whole process conditions, i.e., the content of the dipotassium phosphate is between 98.15% and 98.31%, the pH (10g/L of solution) is between 8.9 and 9.2, the content of water insoluble matters is between 0.11% and 0.17%, the content of fluorides is between 8.04mg/kg and 9.13mg/kg, the content of arsenic is between 2.03mg/kg and 2.71mg/kg, the content of heavy metal is between 8.9mg/kg and 9.4mg/kg as well as the loss on drying is between 1.64% and 1.82% according to physical and chemical indexes in a manner of sampling analysis.

The silica sol of the invention contains silica particles having a mean primary particle size of 20 to 100 nm and which has a silica particle size/mean primary particle size ratio, determined through dynamic light scattering, of 3.0 or less, wherein the silica particles are surface-treated with an organic silane compound and have an α-ray emission rate of 0.005 counts/cm²·hr or less and a moisture absorption coefficient, determined after allowing the silica particles to stand for 48 hours at 23° C. and a relative humidity of 50 RH %, of 0.5 mass % or lower.

Am emusifying liquid for fuel oil is prepared from 6 surfactants including rosin solution, alkanolamide, lipoacyl diethanolamine, fatty alcohol polyoxyethylene ether, etc. and water. It can be used along with water to obtain emulsified diesel oil or emulsified heavy oil. Its advantages are high stability of emulsified fuel oil within 3 months, saving oil by 15-25%, no black smoke in tail gas, andreducing smoke by 64%, co by 62%, SO2 by 58% and No by 51%.

The invention discloses an online low-nitrogen oxygen-rich combined combustion energy-saving system. The system comprises a pretreatment comprehensive coal hopper which is mounted on a chain-type coal firing boiler, feeds the raw coal in layers and in rows into a chain-type coal firing boiler grate and sorting powdery coal on line; a drying/preheating heat exchanger for drying and delivering the powdery coal which is sorted by the pretreatment comprehensive coal hopper and preheating the air; a coal powder fine-sorting device connected with the drying/preheating heat exchanger and used for finely sorting the powdery coal which is dried by the drying/preheating heat exchanger; and a low-nitrogen oxygen-rich coal powder combustor used for feeding the high-quality coal powder which is finelysorted by the coal powder fine-sorting device into the chain-type coal firing boiler grate. The online low-nitrogen oxygen-rich combined combustion energy-saving system has the advantages of simple structure, reasonable design and good use effect; can treat inferior coal on line to obtain the energy-saving modification technique with the optimum use effect while minimizing the minimum cost, can increase the utilization efficiency of inferior coal, reduce the waste of energy and reduce the use cost.

Disclosed herein is an exhaust heat recovery apparatus for a vehicle, in which a heat accumulator has improved heat accumulation performance and heat exchange performance, whereby an engine can be rapidly warmed up in a cold start so that fuel efficiency can be enhanced, a pollutant emission rate can be reduced, and it is possible to heat a passenger compartment immediately after the engine starts.

An apparatus for controlling a gas turbine combustor having a diffusion combustion burner and a premix combustion burner comprising: a rotating speed detector for detecting a rotating speed of gas turbine, a recorder for recording the detected value of the rotating speed of gas turbine detected by the rotating speed detector, an arithmetic unit for calculating a change with time of the rotating speed of gas turbine in accordance with details of the detected value of the rotating speed of gas turbine recorded in the recorder, and a fuel control unit for judging a starting situation of reduction in the rotating speed of gas turbine on the basis of the change with time of the rotating speed of gas turbine calculated by the arithmetic unit and controlling respectively a fuel flow rate for the diffusion combustion burner to be fed to the diffusion combustion burner installed in the gas turbine combustor and a fuel flow rate for the premix combustion to be fed to the premix combustion burner.

The invention relates to the technical field of wastewater treatment, in particular to a lead zinc ore beneficiation wastewater treatment method and a treatment device for the lead zinc ore beneficiation wastewater. By means of setting the structure of the device, the device can realize accurate coupling of chemical precipitation and membrane treatment methods, so that lead zinc ore beneficiation wastewater can be treated by coupling of chemical precipitation and membrane treatment; meanwhile, the shortcoming that a membrane treatment unit is damaged due to improper acidity in a chemical precipitation process is overcome, and the cost of lead zinc ore beneficiation wastewater treatment is reduced.

The invention provides a device capable of conducting dust removal and arsenic recovery on non-ferrous smelting smoke at the same time. The device comprises a fan, a dust removal and arsenic precipitation integrated device and a quenching arsenic recovery device which communicate with one another in sequence, wherein a turntable which is connected with a driving device through a transmission shaftis arranged in the dust removal and arsenic precipitation integrated device, through holes through which the smoke runs are formed in the turntable, intercepting pipes used for adsorbing smoke dust and partition boards used for dividing an arsenic precipitation and removal device into a dust removal region, an arsenic precipitation region, an arsenic removal region and an injection region are arranged on the turntable, the through holes are formed in the upper ends and the lower ends of the dust removal region, the arsenic precipitation region, the arsenic removal region and the injection region respectively, the through hole in the lower end of the dust removal region is connected with the fan, the through hole in the upper end of the dust removal region is connected with the through hole in the upper end of the arsenic precipitation region, the through hole in the lower end of the arsenic precipitation region is connected with a smoke outlet, the arsenic precipitation region is connected with a cooling device, the arsenic removal region is connected with a heating device, and the through hole in the upper end of the arsenic removal region is connected with the quenching arsenicrecovery device. By means of the device capable of conducting dust removal and arsenic recovery on the non-ferrous smelting smoke at the same time, operation of dust removal and arsenic precipitationcan be conducted by one device, and not only is a smoke treatment technology simplified, but also the purity of recovered finished product arsenic can be improved.

The invention discloses a non-disassembly automobile three-way catalyst cleaning agent. The cleaning agent is prepared from a surface active agent, a macromolecular amine dispersing agent, a fuel oilfriction improver, an anti-rust agent, a solvent and a gasoline additive. Some functional poly-molecular compounds are combined with a cleaning agent and auxiliaries, by directly adding the raw materials into an oil tank, the whole oil way is cleaned, stubborn carbon deposition and oil sludge on gas inlet system prats are effectively dissolved, and the problems of air vent clog, power decrease, oil consumption increase and the like are solved; the tail gas exhaust rate is lowered, a three-way catalyst is protected, and the service life is prolonged; operation steps are reduced, and the matteris settled at one go.

The invention relates to an oil and water separation and purification system for automobile coating wastewater. The oil and water separation and purification system for the automobile coating wastewater comprises a wastewater collecting system, a crude separation system, a water separation type whirlcone, an oil separation type whirlcone as well as pipelines for connection, and is characterized inthat the crude separation system comprises a multi-stage filtering tower and a low-boiling-point evaporation device; coating wastewater is collected and differentiated by the wastewater collecting system, enters the multi-stage filtering tower to be filtered and enters the low-boiling-point evaporation device; high-boiling-point wastewater which flows out of the low-boiling-point evaporation device enters the water separation type whirlcone; low-boiling-point wastewater enters the oil separation type whirlcone; the multi-stage filtering tower and the low-boiling-point evaporation device communicate with a tail gas purification device; and spraying water of the tail gas purification device is connected with a water phase outlet of the oil separation type whirlcone. The wastewater is divided into two ways to be treated separately and the treatment quantity is large, so that the wastewater treatment efficiency is improved and the oil and water separation effect is improved; furthermore,waste water in the wastewater treatment process is purified, so that unpleasant odor or toxic and pungent odor generated in the wastewater treatment process is treated.

The invention relates to a primary dedusting system for a rotating furnace. The dedusting system comprises the rotating furnace, a spray cooling tower, a ring seam scrubbing tower, a dehydrator and a fan, wherein the coal gas in the rotating furnace is filled into the spray cooling tower through an evaporation flue, and is then sequentially filled into the ring seam scrubbing tower, the dehydrator and the fan through coal gas pipelines; the dedusting system also comprises a dehumidifier which is connected between the dehydrator and the fan in series; and one end of the dehydrator is connected with an outlet of the dehydrator, and the other end of the dehydrator is connected with an inlet of the fan. The primary dedusting system for the rotating furnace not only has lower dust emission rate, but also is simple in structure and lower in cost.

An emission control system for an engine includes a catalyst and an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas. The exhaust-gas sensor includes a sensor element that includes a pair of electrodes and a solid electrolyte body located between the electrodes. The emission control system further includes a constant current supply portion that changes an output characteristic of the exhaust-gas sensor by applying a constant current between the electrodes, a rich direction control portion that performs a rich direction control after a fuelling-stop control, and a characteristic control portion that performs a rich responsiveness control during the rich direction control. In the rich direction control, an air-fuel ratio of the exhaust gas is made to be richer. In the rich responsiveness control, the constant current supply portion increases a detection responsiveness of the exhaust-gas sensor with respect to rich gas.