11 results about "NOx" patented technology

An engine controller determines the cost of operating a combustion engine and the cost of operating an emissions after-treatment device. Accordingly, the engine controller adjusts parameters for operation of the engine and the after-treatment device to ensure cost-effective use of the engine and the after-treatment device while complying with exhaust emissions requirements. In particular, the engine controller receives the price of fuel consumed by the engine and the price of reductant used by the after-treatment device to determine the respective cost of operation. Specifically, the fuel is diesel fuel used in a diesel engine; the reductant is urea use in a urea-based Selective Catalytic Reduction (SCR) system; and the regulated exhaust emissions is nitrogen oxide (NOx) emissions. The engine operating parameters may include cooled exhaust gas recirculation airflow, fuel injection timing, fuel injection pressure, and air-to-fuel ratio. The SCR system operating parameters may include the volume of urea injected.

The invention provides a cyclone furnace denitration system and method. The cyclone furnace denitration system comprises a cyclone cylinder combustor and a reducing agent storage tank which are connected with the cyclone furnace; an SNCR first nozzle is arranged at the upper part of a hearth of the cyclone furnace, and an SNCR second nozzle is arranged in the top of a hearth flue; the axial direction of the cyclone cylinder combustor is vertically mounted on the outer side wall of the lower part of the hearth of the cyclone furnace, the side wall of the cyclone cylinder combustor is provided with an amino reducing agent first nozzle, and an amino reducing agent second nozzle is arranged on the side wall of the hearth above the cyclone cylinder combustor; a primary air inlet is formed in the axial direction of the cyclone cylinder combustor, and a secondary air inlet is oppositely arranged in the tangential direction of the side wall; the reducing agent storage tank is correspondingly connected with the SNCR first nozzle, the SNCR second nozzle, the amino reducing agent first nozzle and the amino reducing agent second nozzle through a reducing agent conveying pipe. The cyclone furnace denitration system and method has the advantages that the process flow is simple, the storage and conveying equipment of the SNCR denitration reducing agent is fully utilized, a new reducing agentstorage and conveying device does not need to be added, so that a new combined denitration system is formed, and the low emission of NOx of the cyclone furnace is realized.

The invention provides a swirl pulverized coal burner based on in-advance pyrolysis. The swirl pulverized coal burner based on in-advance pyrolysis is particularly suitable for burning fire coal withlow quality, so that the burning stability of a fire coal boiler can be improved, meanwhile, the burning efficiency of the low-quality fire coal is improved, and the generation of NOx is reduced. Theswirl burner comprises a center air pipe, a primary air pipe, an inner secondary air pipe and an outer secondary air pipe, wherein an outlet end of the center air pipe is located in the primary air pipe; a center air and primary air pre-mixing area is formed between the outlet end of the center air pipe and an outlet end of the primary air pipe; the pre-mixing area is located in the primary air pipe and is connected with an inlet of hearth; a swirler is arranged in the inner secondary air pipe; and a swirler is arranged at an inlet end of the outer secondary air pipe.

The invention relates to technology of a water-based combustion-supporting straw particle boiler-kiln universal burner with fuels such as coal, gas and oil. Specially-shaped fireproof ribbed bricks are built in a square-tank water-cooling-wall machine body to form a plurality of pairs of two-side square-tank hearth backfire collision hearth structures, two sides of a central hearth are provided with a square-tank hearth, a fire collision hearth, a fire outlet, a special boiler material covering cap system, an extension hopper, a streamline pushing curve, a streamline extension pipe, a burner body and a cooling triangular comb, mixed application of multiple fuels or replacement of a servo fed material can be performed, the air supply coefficient of a boiler adopting water and magnesium steam water-based supported combustion technology to completely or not completely substitute for a traditional air supported combustion technology is far less than 1, and thus the ultra-efficient energy-saving and environment-friendly boiler-kiln universal burner fulfills six purposes of no air consumption, water-based combustion supporting, ultra-efficient energy conservation, no generation of NOx, desulphurization and decomposition and solidification of carbon dioxide under the catalysis of steam of water, magnesium, etc.

(EN) The present invention relates to the field of high efficiency and high flow hydrogen generation and purification from a hydrogen tank provided in the form of ammonia (NH3). In particular, the present invention describes in particular an innovative and compact system for the dissociation of ammonia and therefore the production of molecular hydrogen (H2), all in a cycle totally free of carbon (hence carbon emissions), as well as by the generation of nitrogen oxide and nitric dioxide (NOx).

The invention discloses a turbulent burner. The turbulent burner comprises a primary air channel and a secondary air channel located on the periphery of the primary air channel. The turbulent burner is characterized in that a flame holder is arranged on an air outlet of the primary air channel, the flame holder comprises a hydrocyclone, a flow expansion channel and a powder coal concentration ring for adjusting swirling intensity, the flow expansion channel is of an external expansion type, the large-section end of the flow expansion channel is connected with the powder coal concentration ring, and the small-section end of the flow expansion channel is connected with the hydrocyclone. The turbulent burner has higher secondary air swirling intensity, higher rigidity and greater smoke suction capacity; the size of a return flow zone can be controlled by adjusting the length of blades on the powder coal concentration ring; secondary air and primary air are mixed later, and emission of NOx can be reduced by locally increasing powder coal concentration.

The invention relates to a tail gas filter with a good black smoke filter effect. The tail gas filter comprises a filter box (1), wherein a first filter screen (2), a first ceramic honeycomb carrier (3), a second ceramic honeycomb carrier (7) and a second filter screen (8) are sequentially arranged in the filter box (1) in the airflow direction, and each ceramic honeycomb surface is coated with anacid-resistant coating. The tail gas filter with the good black smoke filter effect is good in acid resistance; a tail gas comprising the main components of CO, HC and NOx is reacted to generate CO2,H2O, N2 and O2 under the four-stage filter of the first filter screen, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second filter screen; and meanwhile, micropores in a partition wall are capable of effectively filtering black smoke particles in waste gas, and the black smoke particles are combusted under the action of catalyst coatings, so that the purification effect for the tail gas is further improved.

The invention relates to a method for recovering carbon dioxide from tail gas of an industrial furnace and producing lithium carbonate, which comprises the following steps of: removing particulate matters from the tail gas of the industrial furnace, performing denitration and desulfurization treatment, pressurizing the treated tail gas to 0.1-0.7 MPa, dehydrating, and removing NOx and SO2 by adopting a double-tower temperature swing adsorption device to obtain purified tail gas, introducing into a four-tower pressure swing adsorption device to separate carbon dioxide, and finally introducing the obtained carbon dioxide into a lithium hydroxide solution to prepare lithium carbonate. According to the invention, trace sulfides and nitrogen oxides in the tail gas are removed by using a temperature swing adsorption method, so that the total concentration of SO2 and NOx in the tail gas is 1t; according to the method, a pressure swing adsorption method is adopted to recover carbon dioxide, the obtained carbon dioxide gas is high in purity, high in recovery rate and large in treatment capacity, the separated and refined high-purity carbon dioxide can be used as a raw material in the carbonization process to produce battery-grade lithium carbonate, and resource utilization of the carbon dioxide in the tail gas of the industrial furnace is achieved.