55results about How to "Meet the requirements of industrial use" patented technology

The invention provides a treatment method for high-concentration mixed salt organic wastewater. The treatment method for the high-concentration mixed salt organic wastewater comprises the following steps: carrying out coagulating sedimentation on the high-concentration mixed salt organic wastewater, so as to obtain sediments and mixed liquor; carrying out vacuum fractionation on the mixed liquor, so as to obtain fraction and fractional distillate; carrying out evaporative crystallization on the fractional distillate, so as to obtain sodium salt and low-concentration mixed salt organic condensate wastewater; carrying out aerobic biological treatment on the low-concentration mixed salt organic condensate wastewater, so as to obtain low-concentration organic wastewater; carrying out reverse osmosis treatment on the low-concentration organic wastewater, so as to obtain treated wastewater and a reverse osmosis concentrate solution; and carrying out evaporative crystallization on the reverse osmosis concentrate solution, so as to obtain sodium salt, wherein the high-concentration mixed salt organic wastewater contains sodium salt, heavy metal ions and organic matters. The treatment method for the high-concentration mixed salt organic wastewater has the advantages that the sodium salt in the wastewater can be efficiently recycled, treated wastewater can meet industrial usage requirements, reuse rate is high, and zero wastewater discharge is realized. The invention also provides a treatment system for the high-concentration mixed salt organic wastewater.

This invention relates to a kind of ceramics, glass steel compound pipe which is composed of ceramic inner layer, middle connection layer and glass steel layer. The process method comprises the following steps: spraying resin middle connection layer on the inner ceramic pipe layer; then compounding glass steel outer layer. The compound pipe middle connection layer and the ceramic layer and the glass steel outer layer are tightly combined, which makes best use of the ceramic characteristics and the glass steel materials. The invention are most used in transmission of liquid medium with solid particles and the powders.

The invention relates to synthetic calcium magnesite and a preparation method thereof. The preparation method comprises the steps of firstly carrying out ball milling on 25-30wt% of calcium hydroxide and 70-75wt% of magnesium hydroxide to reach the grain size within 30 mu m, heating the ball-milled mixture in a muffle furnace to 700-900 DEG C, and insulating heat for 0.25-0.5 hour; adding water the amount of which is 20-25wt% of the mixture to the calcined mixture, and digesting for 1-2 hours; and then adding an additive the amount of which is 1-3wt% of the digested mixture to the digested mixture, stirring, carrying out mechanical press shaping by a semi-dry method, naturally drying for 12-15 hours, baking at the temperature of 100-120 DEG C for 12-15 hours, finally firing in a high-temperature furnace at the temperature of 1600-1750 DEG C, insulating heat for 3-5 hours and crushing to obtain the synthetic calcium magnesite. The preparation method provided by the invention has the advantages of simple process and no need for special synthesis equipment and treatment technology. The synthesized calcium magnesite has the characteristics of high purity, wide application range, good sintering performance, good hydration resistance, and no influence on high-temperature use performance.

The invention provides a question and answer method and device and terminal equipment. The question and answer method comprises the steps of obtaining a user question; obtaining a candidate question set of the user questions according to the user questions; respectively inputting the user question and each candidate question in the candidate question set into a preset sentence vector model to obtain sentence vectors of the user question and each candidate question; according to the user problem and the sentence vector of each candidate problem, determining the candidate problem with the highest similarity with the sentence vector of the user problem in the candidate problem set as a matching problem of the user problem; determining a preset answer matched with the question as an answer ofthe user question, wherein the preset sentence vector model is obtained by training the collected user intention recognition corpus. According to the scheme, the answers to the user questions can be obtained on the premise of not using the question-answer matching model, and the question answers with high accuracy can be obtained by combining the preset sentence vector model.

A MFI-molecular sieve catalyst for preparing caprolactam from cyclohexanone oxime by gas-phase Beckmann rearrangement is prepared through proportionally mixing MFI-molecular sieve with alkaline silica gel, shaping, drying and calcining. It has high conversion rate and selectivity.

The invention provides a super-high voltage grading ring and a production process thereof, aiming at the problems that the existing grading ring material is easy to cause potential difference and failure of the grading ring under the super-high voltage. The super-high voltage grading ring comprises an annular grading ring body which is made of semiconductor materials, the outer portion of the grading ring body is coaxially provided with an aluminum ring, a plurality of connection rods are uniformly distributed in an annular interval between the grading ring body and the aluminum ring, and theextension lines of the connection rods pass through the centers of circles of the grading ring body and the aluminum ring. By using the semiconductor material, the produced grading ring has an electric field under the super-high voltage to fundamentally avoid the potential difference problem, and the grading ring is not easy to cause breakdown of a device when the voltage generates voltage jump soas to obviously improve the whole reliability of the device.

The invention belongs to the technical field of textile softeners, and particularly relates to a high-stability phenol-yellowing-resistant silicone oil softener and a preparation method thereof. The high-stability phenol-yellowing-resistant silicone oil softening agent is prepared from the following components in parts by mass: 5 to 40 parts of silicone oil, 2 to 20 parts of an emulsifier, 0.2 to 1 part of a co-emulsifier, 2 to 15 parts of a solvent, 0.5 to 5 parts of a phenol-yellowing-resistant agent and 15 to 120 parts of deionized water. The softening agent provided by the invention overcomes the difficulties of serious phenolic yellowing of high-amine-value silicone oil and poor compatibility of an anti-phenolic yellowing agent and the softening agent by preferably selecting reasonable raw materials, has excellent phenolic yellowing resistance and soft hand feeling, also has good acid resistance, alkali resistance, roll sticking resistance, shear resistance, centrifugation, compounding stability and other stability, and is suitable for industrial production. And industrial use requirements and export requirements are met.

The embodiment of the invention provides a power grid defect detection method and system, and the method comprises the steps: obtaining a feature map corresponding to a to-be-detected power grid inspection image, the feature map comprises a plurality of grid points, and each grid point corresponds to one region of the image; grid points in the feature map are divided into a first class and a second class, the first class represents a defect area, and the second class represents a background area; merging the grid points of the first type to obtain a connected domain; and inputting the connected domain into a pre-trained target detection network to obtain a defect detection result output by the network. According to the embodiment of the invention, the proportion of the defect target in the whole picture is very low for the power grid inspection picture which is data with a complex background, and the accuracy of the model can be obviously improved by extracting the target and then performing classification regression on the target through a coarse-to-fine rapid power grid defect detection method.

The invention discloses a process for preparing aluminum ammonium sulfate by crystallizing two-stage leaching raffinate, wherein the process comprises the following steps: (1) adding ammonium sulfateinto the raffinate to carry out ammonium-aluminum reaction, and crystallizing to obtain an aluminum ammonium sulfate crude product; (2) adding a dissolving solution into the aluminum ammonium sulfatecrude product for dissolving, filtering, and carrying out vacuum crystallization to obtain a purer aluminum ammonium sulfate crude product; and (3) adding deionized water into the purer aluminum ammonium sulfate crude product for dissolving, and freezing and crystallizing to obtain the pure aluminum ammonium sulfate product. The ammonium-aluminum reaction is carried out to obtain the aluminum ammonium sulfate crude product; then vacuum crystallization and filtration are carried out to obtain the aluminum ammonium sulfate crude product with the purity of 80% or above; and finally, freezing, crystallizing and filtering are carried out to obtain the aluminum ammonium sulfate product with the concentration of about 99%. Therefore, aluminum in the two-stage leaching raffinate is effectively recycled, and the recycled aluminum ammonium sulfate crude product is further purified to meet the requirements of industrial use.

The invention relates to synthetic calcium magnesite and a preparation method thereof. The preparation method comprises the steps of firstly carrying out ball milling on 25-30wt% of calcium hydroxide and 70-75wt% of magnesium hydroxide to reach the grain size within 30 mu m, heating the ball-milled mixture in a muffle furnace to 700-900 DEG C, and insulating heat for 0.25-0.5 hour; adding water the amount of which is 20-25wt% of the mixture to the calcined mixture, and digesting for 1-2 hours; and then adding an additive the amount of which is 1-3wt% of the digested mixture to the digested mixture, stirring, carrying out mechanical press shaping by a semi-dry method, naturally drying for 12-15 hours, baking at the temperature of 100-120 DEG C for 12-15 hours, finally firing in a high-temperature furnace at the temperature of 1600-1750 DEG C, insulating heat for 3-5 hours and crushing to obtain the synthetic calcium magnesite. The preparation method provided by the invention has the advantages of simple process and no need for special synthesis equipment and treatment technology. The synthesized calcium magnesite has the characteristics of high purity, wide application range, good sintering performance, good hydration resistance, and no influence on high-temperature use performance.