44results about How to "Alkaline" patented technology

The invention discloses a U-PVC (Unplasticized Polyvinyl Chloride) steel band spiral pipe and a preparation method thereof. The U-PVC steel band spiral pipe is formed by winding a U-PVC strip and a steel band together. On the basis of the U-PVC spiral pipe, the various advantages of high elastic modulus of steel and extremely low price compared with a plastic material are utilized, and a steel frame is perfectly compounded in the U-PVC spiral pipe, so that rigidity of the pipeline is improved, the cost of the pipeline is greatly reduced, and a new-generation large-aperture plastic steel composite pipe is formed on the basis of original performance of the U-PVC steel band spiral pipe; and compared with the same type of pipeline, the steel band spiral pipe has superior price advantage, and engineering cost of various types of municipal drainage works can be reduced well.

The present invention relates to a kind of heterogeneous catalyst with basicity and its preparation method and application, more particularly, relate to a kind of heterogeneous catalyst with basicity used in nitrogen formylation reaction, which is composed of metal component and organic ligand The composition of the copolymer, the organic ligand copolymer is a copolymer with a large specific surface area and a hierarchical pore structure produced by solvothermal copolymerization of a vinyl-functionalized phosphine ligand and a vinyl-functionalized organic base monomer . On the one hand, the catalyst of the present invention introduces an organic base into the copolymer carrier to make the solid heterogeneous catalyst alkaline, which promotes the positive movement of the nitrogen formylation reaction and improves the reactivity; on the other hand, the metal component and the P atom of the copolymer carrier Due to coordination, it is highly dispersed and stably exists on the carrier. Therefore, the basic heterogeneous catalyst of the present invention has excellent nitrogen formylation reaction performance and stability; and the catalyst is easy to separate from reactants and products, and has broad industrial application prospects.

The invention discloses a protective coating for micro-arc oxidation and a preparation method thereof. Firstly, a base material resin is prepared; then a modified organic silicon resin is prepared; the above base material resin is added into a movable tank, and then the modified organic silicon resin is sequentially added , flame retardant, fumed silica, simethicone oil, defoamer, color paste and solvent are mixed, using a high-speed mixer to stir them evenly to obtain a mixed material; using a sand mill to grind the mixed material until the mixture The fineness of the material reaches below 30 μm, and a protective coating for micro-arc oxidation is obtained. The protective coating for micro-arc oxidation prepared by the present invention has the characteristics of curing at low temperature, good adhesion to valve metals and their alloys, acid and alkali resistance, and good protection in the process of micro-arc oxidation. Simple and low cost.

The invention discloses a porous solid amine and a preparation method thereof. Using epoxy compounds and polyamines as raw materials and boric acid as a buffer to slow down the intensity of the reaction, the porous solid amine material is prepared by cross-linking polymerization. The structure It is similar to a sponge-like solid, with a large number of pores, and there are amine groups in it. It is alkaline, has the ability to absorb acid gases such as carbon dioxide, and can also form chelates with metal ions.

The invention discloses a catalyst for decomposing heavy components in neopentyl glycol synthesis waste liquid and its preparation method and application. Copper carbonate exists in the form of copper carbonate, based on the mass of the catalyst, its percentage composition is MgO 10-30%, ZrO 2 10-30%, Al 2 o 3 10~30%, Cu 2 (OH) 2 CO 3 30-50%. The composite base catalyst of the present invention has two kinds of basic sites, one is derived from MgO, ZrO 2 and Al 2 o 3 and other oxides, and the second is derived from basic copper carbonate, so the catalyst has extremely strong alkalinity, and has a good catalytic effect on the decomposition of ester impurities in the heavy component waste liquid of the neopentyl glycol (NPG) plant to prepare NPG. The decomposition rate of various ester impurities can reach more than 90%, which can effectively improve the economic benefits of the device.

The invention discloses a preparation method of electrolyte used in an all-vanadium redox flow battery. The method comprises the steps that: vanadium slag is roasted by using sodium salt, and is processed through aqueous extraction and impurity removing, such that a sodium metavanadate solution is prepared; the sodium metavanadate solution is subject to acid modulation, and is subject to a reaction with concentrated hydrochloric acid, such that a VOSO4 solution is obtained; the VOSO4 solution is concentrated, such that the all-vanadium redox flow battery electrolyte is obtained. With the preparation method, the pollution to the environment can be effectively avoided, and production cost can be reduced. The method is beneficial for large-scaled productions. Also, with the method, existing vanadium resources such as vanadium slag can be reasonably utilized, such that vanadium resource waste is avoided, and production cost is reduced.

The invention belongs to the field of nano materials and in particular to a supercapacitor electrode material, and a preparation method and application thereof. A preparation principle is that a coordination compound is generated by utilizing the coordination of triethanolamine and metal ions, wherein the triethanolamine has a certain alkalinity in an aqueous solution, can be electrolyzed to produce OH-, and the coordination compound and OH- react to produce the metal hydroxide hydrogel. The preparation method comprises the following steps of filtering, washing and drying the generated metalhydroxide hydrogel to obtain a metal hydroxide film; cutting the metal hydroxide film into a desired size; and sandwiching a metal foam current collector between two foamed nickel current collectors,laminating the three current collectors into one body at the pressure of 5 to 20MPa to form a working electrode for a supercapacitor. The invention provides a supercapacitor electrode material, and apreparation method and application thereof. The electrode material can realize the function of a conventional supercapacitor without a conductive agent and an adhesive.

The present invention discloses one kind of lithopone, and the lithopone features its composition comprising zinc sulfide 6.5-36.5 (in weight portions, the same below), hopeite white 2-30, zinc oxide 0.5, silica 2-10, deposited calcium carbonate 15-40 wt%, barite powder 3, kaolin 3, and deposited barium sulfate 2-7. The lithopone of the present invention has high antirust performance, high corrosion retarding performance, high anode deactivating effect, high acid and alkali resistance, high wear resistance, high chemical stability and high adhesion.

The invention relates to a method for manufacturing building materials, in particular to a method for treating industrial waste residues produced after burning and desulfurizing oil residues produced in large oil refineries. It solves the problem that the industrial waste residue formed after oil residue combustion and desulfurization cannot be fundamentally treated and applied for a long time, and proposes a waste residue treatment method after petroleum oil residue combustion and desulfurization. The main raw material of the present invention is waste residue after desulfurization of oil residue, including fly ash and bottom slag, and an additive, i.e. dilute sulfuric acid solution, is added to the main raw material. Sure. This method has fundamentally applied and treated the industrial waste generated by large oil refineries, and at the same time improved the comprehensive utilization rate of waste, reduced the use of natural resources, realized circular economy, energy saving and emission reduction, and has a positive effect on environmental protection. Significance, while reducing the production cost of bricks or blocks.

The present invention discloses a waste brine reuse system using waste brine in a sugar refinery to wash bagasse ash in flue gas discharged from a bagasse boiler. The system comprises: a housing and a liquid inlet tube, wherein the housing is a vertically arranged cylindrical structure; a gas inlet is formed in the lower side wall of the housing; the gas inlet is arranged along the circumferential and tangential direction, and is used for receiving the flue gas; a gas outlet is formed in the top of the housing; and the liquid inlet tube is arranged on the upper part of the housing, and is used for guiding the waste brine into the housing, and enabling the waste brine to downwards flow along the inner wall of the housing. The waste brine reuse system provided by the invention can effectively remove the bagasse ash in the flue gas from the bagasse boiler, and the water consumption of the sugar refinery is greatly reduced because of the repeated use of waste brine.