4results about How to "Reduce smog" patented technology

The invention discloses a semi-solid-state complex no-tillage dry direct seeding method for crop seeds. The no-tillage dry direct seeding method comprises the following steps: S1, keeping a water layer of 1cm-5cm in a ditch, and paving straws obtained by harvesting preceding crops on a ditch surface; S2, applying a base fertilizer on the ditch surface paved with the straws and cleaning the ditch; S3, seeding the crop seeds on the ditch surface, and mixing the crop seeds with semi-solid-state biomass materials, a compound fertilizer and a biopesticide before seeding before seeding seeds, wherein the mixing mass ratio is that the crop seeds to the semi-solid-state biomass materials to the biopesticide is (1-10) to (70-800) to (1-3), and the moisture content of the semi-solid-state biomass materials is 40%-80%; and S4, after seeding the seeds, keeping the ditch surface at a dry state for 3-7 days. According to the semi-solid-state complex no-tillage dry direct seeding method, tillage and combustion of winter crop straws are not carried out, a whole land of field immersing water is not used for irrigation and the water immerses after the seeding, and the biological benefits are obvious; the working energy consumption is reduced, stubbles are not killed by pesticides, haze is reduced and the irrigation water is reduced.

A photocurable composition containing metal oxide nanoparticles (X), a photopolymerizable compound (B), and a photoradical polymerization initiator (C), in which the content of the photoradical polymerization initiator (C) is 10 parts by mass or more with respect to 100 parts by mass of the total content of the metal oxide nanoparticles (X) and the photopolymerizable compound (B).

The invention discloses a method for producing clean fuel by utilizing sludge based on piezoelectric catalysis assisted hydrothermal carbonization, and particularly relates to a method for preparing a piezoelectric catalyst with a strong piezoelectric effect by adopting a hydrothermal synthesis method and a heterostructure. The method comprises the following steps: mixing sludge with deionized water, and adding a piezoelectric catalyst for piezoelectric catalysis pretreatment; and then carrying out hydrothermal carbonization reaction on the pretreated sludge at 180-240 DEG C, and carrying out solid-liquid separation after the reaction to obtain clean hydrothermal carbon. The piezoelectric catalyst adopts a Bi2WO6 (at) SnS2 heterojunction structure, and under the action of an ultrasonic machine, free radicals are generated, extracellular polymeric substances and cell structures in sludge are destroyed, nitrogen-containing substances are released, a Maillard reaction is inhibited, and generation of nitric oxide is reduced. According to the invention, the nitrogen content in the hydrothermal carbon is reduced, the resource utilization of the sludge and the production of low-nitrogen clean fuel are realized, and the method has the advantages of improving the energy efficiency, reducing the operation cost and reducing the environmental pollution.

The utility model is applicable to the technical field of industrial exhaust air treatment, and provides an exhaust air flow equalizing device for a mine ventilation air methane dust removal and pulverized coal recovery system, which comprises a cylindrical flow equalizing air drum, and the surface of one side of the flow equalizing air drum is transversely communicated with a communicating pipe. According to the air exhausting and flow equalizing device for the mine ventilation air methane dust removal and pulverized coal recovery system, the air equalizing air drum and the multiple air equalizing air pipes are arranged, the device can be applied to the mine ventilation air methane dust removal and pulverized coal recovery system in actual use, and the bottom ends of the multiple air equalizing air pipes of the device can be immersed into water of a pulverized coal absorption pool in the system; mine ventilation air methane enters the uniform-flow air drums through the communicating pipes and then is discharged through the uniform-flow air pipes, pulverized coal in the mine ventilation air methane can be adhered and absorbed by water, and gas can be directly discharged, so that the pulverized coal can be prevented from polluting air, then the pulverized coal in the pool can be recycled, haze is reduced, and harm to the environment is reduced.