30results about How to "Avoid secondary generation" patented technology

The invention discloses a multi-branch horizontal well depressurization and heating united mining method for marine hydrates. For the 'congenital' defects that the marine hydrates are distributed in ascattered manner and cannot self flow and get together, based on well type structure improvement of a 'main borehole + a multi-branch horizontal well', an ore body reservoir is hydraulically cut by avertical hydrate layer to improve the hydrate decomposition efficiency and achieve the design objectives of connecting three-dimensional scattered ore bodies and relieving the problems of a large amount of sand, instability of the reservoir and blockage formed by secondary hydrates. The united mining method comprises the following steps: (1) forming a well by a main borehole; (2) drilling a multi-branch horizontal well: forming a plurality of multi-branch horizontal wells, which form a certain included angle and are distributed in a fixed direction, around the main borehole, and arranging thehorizontal wells in the middle region of a hydrate reservoir, wherein joints between the multi-branch horizontal wells and between the multi-branch horizontal wells and the main borehole are all of sleeve and conventional sand control sieve tube structures; (3) performing limited sand control and reservoir supporting; (4) transforming the reservoir by hydraulic jetting; (5) performing heating toprevent blockage.

The invention discloses a method for controlling dioxin in the process of iron ore sintering synergistic treatment of garbage fly ash. The method comprises mixing, granulating and drying the four components of garbage fly ash, milk of lime, flammable solid fuel and sludge. , to obtain pellets containing garbage fly ash; iron ore sintering raw materials are granulated and mixed with the pellets containing garbage fly ash, and then ignited and sintered after the cloth is placed; this method realizes The efficient degradation of dioxin contained in fly ash itself prevents the secondary formation of dioxin in the sintering process of garbage fly ash; this method not only makes the degradation rate of dioxin in garbage fly ash reach more than 90%, but also ensures the The effective consolidation of the fly ash achieves the purpose of cleaning the waste fly ash during the sintering process.

The invention discloses a method for preparing sintered NOx inhibitor by using metallurgical and municipal solid waste. The sintered NOx inhibitor is obtained in the manner that metallurgical solid waste and municipal solid waste raw materials are subjected to pelletizing and roasting. In the sintering process of iron ore, the sintered NOx inhibitor is added on the surface of a fuel layer and plays a role of inhibiting the generation of NOx in the sintering process, the emission of the NOx can be reduced, and meanwhile the grade of iron ore sintered ore is not affected. The method provides a new way for clean resource utilization of the metallurgical and municipal solid waste.

The invention discloses a system for monitoring and avoiding secondary generation in the process of hydrate decomposition, which includes a decomposition casing pipeline, a resistivity detection probe, an external power supply heating device, and a data collection and analysis interconnection device; wherein, the decomposition The casing pipeline adopts a rigid casing structure, and the inner and outer sides of the pipe wall are made of rigid structural materials. A heating element is arranged inside the casing, and the heating element is connected to the external power heating device; the resistivity detection probes are distributed at intervals In the unsleeving pipeline; the data acquisition and analysis interconnection device is used to analyze the received resistivity detection probe signal, and determine whether to issue a control command to start the external power heating device through the heating element according to the analysis result. Disassemble the casing line for heating. This system can effectively monitor and avoid the secondary generation of hydrate during the process of hydrate decomposition, and prevent the phenomenon of pipeline blockage.

The invention relates to the field of oxide solid electrolytes, in particular to a method for removing impurities on the surface of a lithium-lanthanum-zirconium-oxygen electrolyte for a solid-state lithium battery. The method involves transferring the lithium-lanthanum-zirconium-oxygen sheet containing impurities into an analysis chamber of an X-ray photoelectron spectrometer , and then in a vacuum environment, carry out gradual heating to remove impurities on the surface of the lithium lanthanum zirconium oxide sheet, and perform in-situ XPS tests on the surface of the lithium lanthanum zirconium oxide sheet during the gradual heating process, and wait for the impurities on the surface of the lithium lanthanum zirconium oxide sheet to be removed Finally, cool the in-situ heating sample stage to room temperature, then transfer it to the glove box connected to the X-ray photoelectron spectrometer, and remove the lithium lanthanum zirconium oxide sheet from the in-situ heating sample stage in the glove box, Obtain pure lithium lanthanum zirconium oxide sheet. The method of the present invention uses vacuum annealing and in-situ XPS testing, and combines the removal of the impurity layer on the surface of the lithium lanthanum zirconium oxide sheet with the monitoring of surface components, thereby realizing high-precision removal of impurities on the surface of the lithium lanthanum zirconium oxide sheet.

The invention discloses a method for recycling fly ash from garbage during sintering of iron ore. The method comprises the following steps: uniformly mixing fly ash from garbage, biocarbon and a part of an iron-containing raw material from sintering raw materials and with high valuable metal content, preparing sphere kernels in advance, then wrapping the surfaces of the sphere kernels with fine-granule magnetite so as to form core-shell-structured spheres, subjecting the spheres to low-temperature drying and dehydrating and spreading the spheres on the ground floor of a sintering machine to replace a conventional finished-agglomerate grate-layer material; and subjecting other sintering raw materials to granulation, then spreading the granulated sintering raw materials on the spheres, and carrying out ignition and sintering. The method provided by the invention allows fly ash from garbage to be effectively solidified during sintering of iron ore, and dioxins in the fly ash are efficiently degraded; valuable metals in the core-shell-structured spheres are volatilized into flue gas in a heating section and effectively recovered through capturing in the procedure of flue gas dedusting; and thus, the purpose of recycling of the fly ash from garbage during sintering of iron ore is achieved.

The invention discloses a concrete admixture, a preparation method and an application method thereof. The concrete admixture comprises the following components by weight: 30-50 parts of aluminum sulfate, 5-10 parts of potassium metaaluminate, 3-8 parts of magnesium silicate, 1-5 parts of glycerin, 2-5 parts of aluminum fluorosilicate, 5-10 parts of calcium formate, 0.3-0.8 parts of defoamer, 0.2-0.9 parts of organic acid, 2-10 parts of alcohol amine, 0.5-1 part of ester plasticizer, 30-50 parts of water. The dosage of the concrete admixture of the present invention is 3-5% of the cement mass. The application method of the concrete admixture of the present invention: the concrete admixture and the concrete surface enhancer are mixed according to the mass ratio of 1:2-3 and then added to the sprayed concrete at the nozzle, and the amount of the concrete admixture is calculated as 3 based on the cement weight. -5%. The concrete admixture of the invention has the advantages of no alkali metal ion, no corrosion, fast setting speed of concrete, and little strength loss in the later stage.