91results about How to "Lower emission value" patented technology

The invention relates to a microgrid multi-energy joint optimal scheduling method. The method includes: step 1, on the basis of force application conditions of energy supply equipment and operating states of energy storage equipment in different scenes, constructing a physical model of a multi-energy system; step 2, establishing unit mathematical models, including a wind power generator model, a photovoltaic power generation model, a micro-gas turbine model, a fuel cell model and an energy storage model, of the microgrid multi-energy system; step 3, in order to realize lowest comprehensive cost in system operation, constructing a microgrid multi-energy optimal scheduling model by taking DG operation constraints, system safety constraints and multi-energy coupling characteristics into comprehensive consideration; step 4, on the basis of reversed order dynamic planning, solving the microgrid multi-energy optimal scheduling model to obtain a microgrid multi-energy joint optimal operatingstrategy. By the microgrid multi-energy joint optimal scheduling method, operating demands in different scenes can be met, electricity-thermal coordinated optimal scheduling schemes are provided for operating of a comprehensive energy microgrid in different scenes, and high integral operating efficiency and high economic benefits are realized.

The invention relates to a method for compensating variations in fuel composition in a gas turbine system consisting of at least two parallel-operated burner stages, wherein the fuel supply to at least two of the burner stages is adjusted in response to variations in fuel composition, wherein the fuel split between the burner stages, i.e. the relative increase in speed of the fuel supplied to the burner stages, is adjusted to a target value or maintained at a target value during adjustment of the fuel supply. The target value can, for example be a constant or a function of one or several variables. More particularly, the gas turbine system can comprise a pilot burner stage and a main burner stage. When the fuel supply is adjusted, the fuel split between the pilot burner stage and the main burner stage is adjusted to a target value or maintained at a target value.

A charge air system for a combustion engine and an operation method are provided. The charge air system includes a first turbocharger stage for intake of combustion air supplied to the engine from a first pressure to a second pressure, a second turbocharger stage for compression of the compressed air to a third pressure, a first heat exchanger being arranged between the first and the second turbocharger stage for cooling the compressed air, a first intake air bypass for modulating the flow of the air through the first heat exchanger and/or a first mass flow control unit for controlling the flow of a cooling medium supplied to the first heat exchanger.

Internal combustion engine with at least one cylinder, in which the combustion of a homogeneous air/fuel mixture compressed in the cylinder by a piston is initiated by a time-controlled external ignition, the air/fuel ratio of the air/fuel mixture in the combustion chamber (25) being greater than 1.9 and, for the time-controlled external ignition, at least one laser light source (10), at least one optical transmission apparatus (11) and at least one coupling optic (12) for the focussing of laser light into a combustion chamber (25) being provided.

A premix burner for a heat generator has partial cone shells (5) which make up a vortex generator, and which encompass a conically widening vortex chamber (6) and mutually define tangential air inlet slots (7), and also with feeds for gaseous and/or liquid fuel, of which at least one is arranged along the air inlet slots (7) on the partial cone shells (5), and at least one other is arranged along a burner axis (A) which centrally passes through the vortex chamber (6). At least n partial cone shells (5) encompass the vortex chamber (6), and define n air inlet slots (7), with n≧3, preferably n≧5, the n air inlet slots (7) each have at least a maximum slot width (10) which is equal to or larger than that slot width (10) which a generic type premix burner (1) of the same size and dimensioning with m≦2 partial cone shells (5) and m air inlet slots (7) has.

The invention discloses a face-fired boiler advanced denitration burning method. The method comprises the following steps: fire coal is sent to a hearth through primary air in the primary air nozzles of a plurality of turbulent burners in each of layers of turbulent burners arranged on a front wall and a rear wall and is burnt, secondary air is introduced through secondary air nozzles of the turbulent burners, over fire air is introduced through one or more layers of over fire air nozzles on the front wall and the rear wall, the primary air and the secondary air on the front wall and the rear wall are oppositely introduced, the excess air coefficient range of the main burning area of the turbulent burners is 0.5-1.05, and the fire coal undergoes low oxygen burning; the excess air coefficient range of the over fire area of the over fire air nozzles is 1.05-1.3, and oxygen rich burning is carried out; and one or more layers of an amino reduction inhibitor are injected to the hearth under the uppermost over fire layer to reduce nitrogen oxides in flue gas in high temperature environment in the hearth and inhibit generation of new nitrogen oxides. The face-fired boiler advanced denitration burning method has the advantages of substantial reduction of the nitrogen oxide discharge value of the outlet of the hearth, realization of ultralow discharge, no strict temperature window or catalyst, great reduction of the denitration cost, and prevention of high temperature corrosion of water screens in the boiler.

The invention discloses a W-firing boiler advanced denitration combustion method. The method comprises the following steps: fire coal is sent to a hearth through primary air in the primary air nozzles of a plurality of main combustors on boiler arches of a front wall and a rear wall and is combusted, secondary air and under-arch secondary air are respectively introduced through secondary air nozzles and under-arch secondary air nozzles, exhaust gas wind is introduced through exhaust gas wind nozzles on the front wall and the rear wall, one or two layers of over-fire air are introduced through over-fire air nozzles, the excess air coefficient range of a main combustion area is 0.7-1.05, and the fire coal undergoes low oxygen combustion; the excess air coefficient range of an over-fire area is 1.05-1.3, and oxygen rich combustion is carried out; and one or more layers of an amino reduction inhibitor are injected to the hearth under the uppermost over-fire air layer to reduce nitrogen oxides in flue gas and inhibit generation of new nitrogen oxides. The W-firing boiler advanced denitration combustion method has the advantages of substantial reduction of the nitrogen oxide discharge value of the outlet of the hearth, realization of ultralow discharge, no strict temperature window or catalyst, great reduction of the denitration cost, and prevention of high temperature corrosion of water screens in the boiler.

A method for operating a gas turbine system in part load operation wherein a compressor pre-guide blade adjustment for part load operation is initiated in case of a given state of a flow medium which flows into a compressor, a value of the initiated compressor pre-guide blade adjustment is compared with a compressor pre-guide blade adjustment limit value which is determined depending on the state of the flow medium, and, if the value of the initiated compressor pre-guide blade adjustment meets a predefined condition with regard to the compressor pre-guide blade adjustment limit value, at least one measure is initiated for changing the state of the flow medium which flows into the compressor in part load operation. An arrangement has an actuating device, determining device and control unit to carry out the method. The gas turbine system has an anti-icing device and/or an intake air heating device and the arrangement.

The invention relates to a cooling water jacket structure of a diesel engine cylinder body. A water inlet channel is disposed at the upper portion of the air inlet side of the cylinder body, a cylinder body water jacket is formed at the middle upper portion of each cylinder of the cylinder body, and the water inlet channel is communicated with the insides of the cylinder body water jackets through water inlet holes. The diesel engine cylinder body cooling water jacket structure is characterized in that the top ends of the cylinder body water jackets upwards extend to be provided with conical cooling water jackets, the conical cooling water jackets are located below cylinder jacket axial location ring support shoulders of cylinders of the cylinder body, the upper ends of the conical cooling water jackets are connected with the cylinder jacket axial location ring support shoulders, and the lower ends of the conical cooling water jackets are connected with water jacket inner cavity inclined planes of the cylinder body water jackets. The height of each conical cooling water jacket should ensure that when a piston is located at a top dead center, the upper ends of the conical cooling water jackets basically align to the top edge of a first piston ring on the piston. The cooling water jacket structure of the diesel engine cylinder body can ensure that when the piston is located at the compression top dead center, the piston, the piston ring and the cylinder jacket can all be cooled effectively, and scuffing of cylinder bore of the cylinder jacket can be prevented.

The invention relates to a system and a method for adjusting optimum control on combustion of a gas turbine, which aim at solving the current urgent problem of providing a method, with common suitability, for adjusting optimum control on combustion of a gas turbine. The method comprises the following steps of firstly, judging whether the gas turbine requires the combustion optimum control adjustment or not; after determining that the gas turbine requires the combustion optimum control adjustment, determining the effective running boundary range of combustion parameters of the gas turbine; then, collecting the parameter values of the gas turbine when entering the temperature-control full load state at different environment temperatures, comparing the effective running boundary ranges of thecombustion parameters of the gas turbine, analyzing the cause of combustion offset, determining the adjusting types of fuel adjusting values, and adjusting the equivalent ratio of fuel to air on linein real time; finally, increasing and decreasing the load of the gas turbine, adjusting and correcting the opening degree of each fuel adjusting valve on line, and repeating the steps until the gas turbine runs at the optimum state under the current environment condition. The method has the advantages that the optimum control on the combustion of various types of gas turbines can be adjusted, andthe application range is broad.

An air filter arrangement for an internal combustion engine, especially for a two-cycle engine in a manually guided implement such as a power saw, a cut-off machine, etc., and including an air filter element that delimits a first clean chamber. The air filter arrangement has an inlet opening for an air channel and an inlet opening for a mixture channel. A shield is provided for shielding the air filter element relative to the mixture channel. The inlet opening of the air channel and the inlet opening of the mixture channel are interconnected via the shield.

The invention discloses a cleaning car single-engine system and a cleaning car thereof. The cleaning car single-engine system comprises an engine, a generator, an AC/DC controller, a DC/AC controller, an upper loading controller, a driving motor, a clutch and a transmission; the generator and the clutch coat an output shaft of the engine in sequence; the engine drives the generator to generate electricity; the output shaft of the engine is connected with the transmission through the clutch; an output end of the generator is connected with the AC/DC controller; the AC/DC controller is connected with the DC/AC controller through a direct-current high-voltage wire; an output end of the DC/AC controller is connected with the driving motor through a three-phase wire; an output end of the driving motor is connected with loading equipment; and the upper loading controller is respectively connected with the AC/DC controller and the DC/AC controller through CAN buses. The invention adopts the single-engine system, so that the whole car oil consumption is reduced, and the emission is reduced; and an upper loading system has a relatively independent and stable power source, so that the safety is high.

The invention relates to a method for operating a hybrid drive. The method for operating the hybrid drive of a motor vehicle in particular. An internal combustion engine is connected to a generator via a force-conducting connection. In a learning mode, the generator is operated as a motor and drives the internal combustion engine. In this learning mode, a so-called zero quantity calibration is performed.

The embodiment of the invention relates to the field of logistics, and discloses a vehicle carbon emission planning method, which comprises the following steps of: establishing a carbon emission planning model of a vehicle, the carbon emission planning model comprising a carbon emission function and a plurality of constraints; solving the carbon emission planning model to obtain the minimum valueof the carbon emission function; planning the driving speed and the road path of the vehicle according to the minimum value of the carbon emission function, wherein the parameters of the carbon emission function comprise the time-varying speed, and the time-varying speed refers to the real-time speed, changing along with time, of the vehicle. According to the method, the time-varying speed of thevehicle is regarded as the decision variable of vehicle carbon emission planning, and the minimum carbon emission value is obtained, so that the optimal planning scheme of the vehicle driving path andthe driving speed is provided, and the carbon emission in logistics activities is reduced to the maximum extent.

The invention discloses a deep denitration combustion method for a tangential boiler. The hearth of the tangential boiler comprises a main combustion zone, a reduction zone and a burning-out zone; fuel coal is fed into the main combustion zone of the hearth for combustion through primary air in one or more layers of primary air nozzles; one or more layers of secondary air is introduced through secondary air nozzles in the main combustion zone; and one or more layers of burning-out air is introduced through burning-out air nozzles in the burning-out zone. The deep denitration combustion method is characterized in that an excess air coefficient in the main combustion zone ranges from 0.5 to 1.05, and the fuel coal is subjected to low oxygen combustion; an excess air coefficient in the burning-out zone ranges from 1.05 to 1.3, and the fuel coal is subjected to oxygen-enriched combustion; an amidogen reduction inhibitor is sprayed in through one or more layers of reduction inhibitor nozzles in the hearth below the burning-out air on the uppermost layer; the reduction inhibitor nozzles on the same layer are located on the same plane; and nitric oxides in smoke are reduced in a high-temperature environment in the furnace, and generation of new nitric oxides is inhibited. By adopting the deep denitration combustion method, a nitric oxide emission value at the outlet of the hearth can be obviously lowered, and ultra-low emission is realized; strict temperature windows and analysts are not needed; denitration cost is greatly lowered; combustion efficiency can also be ensured; economic benefit is obvious; and the deep denitration combustion method has wide applicability.

The invention discloses a low NOx gas burner based on an internal recycle of gas and a method of reducing emission and belongs to the technical field of gas fuel burning. The low NOx gas burner comprises a gas pipe and a secondary air channel, wherein a combustion stabilization disc is arranged at the outlet of the secondary air channel, and the secondary air channel is composed of a secondary airinlet pipe section and a Venturi reducing pipe section; and an internal circulation flue gas inlet is formed in the throat of the Venturi reducing pipe section in a hearth of a boiler. A flue gas recycle fan and a flue gas pipeline are not needed. The proportion of circular flue gas is 5-20% by way of internal circulation mode of flue gas, and reaches the flue gas circulation proportion of an external circulation method, so that the NOx emission value of a burner or the boiler is low.

The invention discloses a portable gasoline engine and an automatic air door control system thereof. The gasoline engine comprises a carburetor. The carburetor is provided with a gas inlet channel with a gas inlet. The automatic air door control system comprises a choke valve and a power unit for driving the choke valve. The gas inlet is opened or closed by the choke valve. The automatic air door control system further comprises a transmission unit and a controller. The transmission unit and a rotary shaft are matched and connected. The controller is provided with a circuit drive module for driving the transmission unit to move so that the choke valve can be controlled to be closed and opened. Automatic closing or opening of the choke valve can be achieved, operation is easy and convenient, no requirement for the skill or experience of an operator exists, and product popularization is facilitated.

The invention relates to a compound disperse blue dye for direct printing, comprising the following components by weight: 30-82% of dye monomer A, 10-50% of dye monomer B, 1-22% of dye monomer C and the balance auxiliary agent. The dye can be applied to directly printing pure polyester fiber fabrics or other blend fabrics and ensure the fabrics to have bright-colored, full and layered hues, has low sensitivity to change of direct printing process parameters, has good printing levelling property and high color yield percentage and can obtain optimal color fastness and simultaneously reduce COD discharge value of printing and dyeing wastewater and environmental pollution.

A combustion chamber (1), in particular in a gas turbine, has at least two burners (A-H) that are connected to a fuel supply (3) via controllable fuel valves (2′ and 2). Each burner (A to H) is assigned at least one optical measuring device (4) for detecting chemiluminescent radiation, and the combustion chamber (1) is assigned a pressure sensor (7) for detecting a combustion chamber pressure. The optical measuring device (4) and the pressure sensor (7) are connected to a computing and control device, which calculates a correlation value from the incoming measured values. A high correlation value signifies that the associated burner is prone to pulsation. The computing and control device (6) is designed in such a way that it determines the burner or a burner group with the highest correlation and controls the associated fuel valve(s) in such a way that more fuel is fed to the respective burner or the respective burner group, and the pulsation tendency thereof is thereby reduced.