4results about How to "Effective control generation" patented technology

The invention relates to the technical field of modified biochar, in particular to application and method of transient electromagnetic pulse and Fe modified biochar, and the method comprises the following steps: S1, biochar is put into a transient electromagnetic pulse field for treatment for 0.5-3.5 h, the voltage is 5-25 kV, and the frequency is 10-80 Hz; s2, adding the biochar obtained in the step S1 into a FeCl3 solution, adjusting the pH value of the solution to 9-11 by using 1mol / L NaOH, and controlling the reaction temperature on a shaking table at 25 DEG C for 24 hours; and S3, after the reaction in the step S2 is finished, filtering, washing with distilled water until the pH value of the filtrate is neutral, and then drying in a drying oven at 70 DEG C for 24 hours to obtain the transient electromagnetic pulse combined Fe modified charcoal. The surface structure and the pore structure of the biochar are improved through treatment of a transient electromagnetic pulse technology, and the specific surface area and the porosity of the biochar are remarkably increased, so that more favorable conditions are provided for Fe loading, and phosphate in water is effectively adsorbed.

The invention relates to the technical field of allantoin preparation, in particular to a synthesis method of allantoin. The synthesis method comprises the following steps: (1) mixing and stirring glyoxal and nitric acid to react; (2) adding calcium hydroxide powder while stirring at room temperature, separating out white precipitate, and standing; (3) after filtering, washing filter residues with water, adding calcium chloride into the filtered mother liquor, stirring and dissolving, dropwise adding a sodium hydroxide aqueous solution, stopping adding alkali when the pH value reaches 3.0-3.5, and standing to obtain a fine-particle calcium glyoxylate white solid; (4) dissolving the prepared calcium glyoxylate with hydrochloric acid, adding urea, stirring and reacting, and generating white precipitate along with the reaction; and filtering, washing and drying the obtained precipitate to obtain the product allantoin. The invention aims to provide a synthesis method of allantoin, and aims to reduce the production cost and improve the product yield and purity.

The utility model belongs to cement kiln disposal technical field, disclose a kind of alternative fuel incineration boiling furnace suitable for cement kiln, including boiling furnace body, the top of boiling furnace body is equipped with alternative fuel import, alternative fuel import place is equipped with material lifting device, the material lifting device includes driving motor, transmission mechanism, material lifting plate and heat shield, the driving motor and material lifting plate in the transmission mechanism connection are in furnace outside, the heat shield is arranged in the outside of transmission mechanism as its support and protection, driving motor drives transmission mechanism to drive material lifting plate to swing up and down.This boiling furnace is blown and the reasonable flow rate design by the material lifting effect and air cannon of material lifting device, fuel is in suspension in hearth, air cannon is blown to the violent disturbance of material combustion, destroys the original flame layer generated in combustion process, improves the combustion condition of material surface, promotes the full burnout of material, shortens the combustion time of material.

The present invention provides a coal-fired boiler coupled with a biomass gas combustion device and a method for arranging its combustion system, and belongs to the technical field of boiler combustion devices and methods for arranging their combustion systems. The biomass gas combustion device of the present invention is arranged in a wind box, a central air duct is fixed in a gas channel, the central air duct and the gas channel are arranged in concentric circles, a secondary air duct is fixed outside the rear end of the gas channel, the secondary air duct and the gas channel are arranged in concentric circles, a secondary air swirl device is fixed at the air inlet end of the secondary air duct, a central air swirl device is arranged at the rear end in the central air duct, a gas swirl device is provided between the rear end of the gas channel and the rear end of the central air duct, and a central air introduction channel is fixed at a position centered in front and behind the gas channel and communicates with the central air duct. Using the method for arranging the combustion system of a coal-fired boiler coupled with a biomass gas combustion device, the biomass gas combustion device is arranged between the upper pulverized coal burner and the OFA burner.