40results about How to "Reduce the concentration of chloride ions" patented technology

The invention relates to the field of concrete engineering, and especially relates to a chlorine salt corrosion resistant system with chemical microcapsule for underground structure concrete. The invention relates to the field of concrete engineering, and especially relates to a chlorine salt corrosion resistant system with chemical microcapsule for underground structure concrete. Compared with an existing chloride corrosion resistance method, the chloride corrosion resistance system provided by the invention has the following advantages: the system can realize intelligent control of chloride concentration by concrete, reduce chlorine salt corrosion, and produce precipitate to block a channel corroded by chlorine salt while reducing the chloride ion concentration; the microcapsules can protect the internal repair agent from outside influence, so as to realize long-time effectiveness of chlorine salt corrosion resistance of the repair agent; and compared with an anticorrosive coating, the chlorine salt corrosion resistant system can realize large-scale multiple rehabilitation due to a large amount of chemical microcapsules evenly distributed in the concrete matrix.

The invention relates to marine microorganism culture technology, in particular to a medium for cultivating Schizochytrium and a method for producing docosahexaenoic acid (DHA) using the medium. The culture medium in the present invention is a culture medium with low chloride ion concentration, which makes the chloride ion concentration in the culture medium lower than 2g / L, while the potassium ion concentration is higher than 0.1g / L, and the sodium ion concentration is between 1-20g / L. Between L. Using the culture medium of the present invention can substantially equalize or higher the output of docosahexaenoic acid (DHA), and reduce the corrosion degree of the culture medium to a series of production equipment such as fermentation, oil pressing and extraction, and prolong the use of equipment Long life, ensure production safety, and can reduce the concentration of chloride ions in the sewage discharged during the production process, thereby reducing production costs.

The invention discloses an electrolyte solution, electrolytic copper foil and manufacturing method thereof. The electrolyte solution is used for manufacturing the electrolyte copper foil, and containscopper ions of 50 to 90 g / L, sulfuric acid of 50 to 120 g / L and Cl ions of a concentration of not higher than 1.5 ppm. The electrolytic copper foil manufactured after the abovementioned electrolyte solution is electrolyzed has ten-point average roughness of not higher than 2 [mu]m on a surface at one side which is in contact with the electrolyte solution, the electrolytic copper foil has an elongation difference value generated through thermal treatment, and the elongation difference value is negatively correlated with an initial grain size of the electrolytic copper foil. The electrolytic copper foil provided by the invention has low roughness and special mechanical property, and can be applied to an electrical assembly.

A 5-aminolevulinic acid salt which is useful in the fields of microorganisms, fermentation, animals, medical science, plants and so on; a process for producing the same; a medicinal composition containing the same; and a plant vitalizer composition containing the same.

The invention discloses a Pi-shaped pile foundation open-typepermeable bulwark with an arc slab and a design method of the bulwark. The bulwark comprises a lower pile foundation and an upper wave blocking structure, wherein the wave blocking structure is supported by a beam on the pile foundation, and comprises the arc slab, web plates, a bottom plate and rib plates, the arc slab, the two web plates with the tops connected with the arc slab, and the bottom plate connected with the bottoms of the web plates form a Pi-shaped-section prefabricated member, and the rib plates fix the web plates and the bottom plate. The Pi-shaped pile foundation open-typepermeable bulwark has a good wave prevention effect, can effectively reduce high transmitted wave behind the bulwark and maintain berthing stability conditions in a harbor, and has a better mechanical characteristic, and the structure cannot be easily damaged by waves; besides, the bulwark adopts a pile foundation open-typepermeable structure, allows water exchange inside and outside the harbor , and is environment friendly.

The invention discloses a device and a method for performing construction by taking marine sand as concrete fine aggregates. The device comprises a direct-current power supply and a template (1), wherein a sliding groove is formed in the inner surface of the template (1); a stainless steel plate (3) is arranged at the bottom of the sliding groove; a drawer plate is arranged in the sliding groove in a sliding-fit manner; a conductive net (11) is embedded in the inner side of a steel reinforcement cage (8) of a concrete structure (6); a positive electrode of the direct-current power supply is connected with the stainless steel plate (3) through a lead wire; and a negative electrode of the direct-current power supply is connected with the conductive net (11). The method comprises the following key steps: pouring and tamping the concrete aggregates; in 2-4 days, pulling out the drawer plate and sealing an opening of the sliding groove with a seal strip (5), so that the surface of the concrete structure (6), the seal strip (5) and the sliding groove form a sealed chamber; and filling the chamber with an electrolyte solution (7), so that chlorine ions in the concrete structure (6) are migrated to the electrolyte solution (7). According to the device and method, the chlorine ion concentration of the marine sand can be effectively reduced.

The invention discloses a production method of sodium ferric edetate, comprising the following steps: preliminary reaction: reacting ferric chloride and tetrasodium edetate in water to obtain feed liquid A and solid product B; Dry the solid product B to obtain sodium ferric edetate; perform chromatography on the feed solution A to obtain component A-1 containing sodium chloride NaCl and component A-1 containing sodium ferric edetate 2; Component A-1 is crystallized and separated to obtain NaCl solid C and NaCl filtrate D, and NaCl solid C is dried to obtain by-product solid NaCl, and NaCl filtrate D is again subjected to the operation of the filtrate treatment step; Component A-2 of sodium ferric amine tetraacetate reenters the preliminary reaction step. The advantage of the present invention is that it can realize the separation of sodium ferric edetate and sodium chloride in the reaction liquid, and the component containing sodium ferric edetate after separation can be used as the reaction liquid to participate in the reaction again as a raw material, and at the same time, the by-product The product sodium chloride is used for the by-product sodium chloride.

The invention discloses a method for recycling and deeply treating heat of oxygen-rich wet oxidation heat of glyphosate mother liquor, and belongs to the technical field of chemical engineering. The method comprises the following process steps: producing by using a glycine method and an iminodiacetic acid method so as to obtain glyphosate and glyphosate mother liquor; concentrating the glyphosate mother liquor; mixing the concentrated glyphosate mother liquor, compressed air and liquid oxygen, sequentially feeding into a first-stage preheater, a second-stage preheater, a first-stage reactor, a waste heat boiler and a second-stage reactor for treatment, sequentially feeding back an oxidized liquid obtained from the second-stage reactor to the waste heat boiler, the second-stage preheater and the first-stage preheater for heat exchange, cooling to crystallize the oxidized liquid after heat exchange so as to obtain a phosphate product, and concentrating the crystallized oxidized liquid so as to obtain a concentrated liquid and a penetrate liquid; concentrating the penetrate liquid so as to obtain a sodium chloride product, and recycling the distillated liquid as a recycled liquid to be used in a glyphosate production process; performing hydrogen peroxide photo-catalytic oxidation reaction on the concentrated liquid. By adopting the method, the production cost is lowered, and the reaction efficiency is improved.