82 results about "Chemical used" patented technology

A downhole apparatus with an internal surface defining a cavity. The cavity houses one or more sealed packs containing chemicals used in wellbore operations. The downhole apparatus optionally includes either fluid ports to equalize the wellbore pressure or one or more compensating pistons for adjusting the volume of the cavity in response to wellbore conditions such as temperature or hydrostatic pressure. The chemicals are released into the wellbore when the downhole apparatus is milled or when the sealed packs are dissolved.

The invention belongs to the technical field of preparation of low-dimensional nano composite materials, and discloses a simple and rapid preparation method of an MXene-noble metal composite nano material. The method is based on the principle of mild chemical reduction, meanwhile, the reduction capacity of lone pair electrons of MXene is utilized, and mild preparation of the MXene-precious metal composite nanomaterial can be achieved. Controllable preparation of different MXene-noble metal composite nanomaterials can be realized by flexibly adjusting the components of the noble metal precursor. Meanwhile, the used chemicals are few in variety and environment-friendly, and the principle of green chemical synthesis is combined.

To provide protective clothing that can protect the body when attacked by a bear and repel the bear. [Solution] Protective clothing worn to repel bear attacks comprises a protective fabric 1 sandwiched between a surface fabric 2 and a backing fabric 3. The protective fabric 1 comprises a chemical-containing layer 11 capable of releasing a chemical to repel bears, and a protective layer 12 for physical protection from bear attacks. The chemical used to repel bears is capsaicin, derived from chili peppers. When a strong force is applied to the human body by a bear attack, physical damage to the chemical-containing layer 11 causes the chemical to be released, allowing the bear to repel. Furthermore, the protective layer 12 cushions the impact on the human body, making the garment effective in protecting the human body from bear attacks.

In some embodiments, a computer-implemented method of generating a prediction related to a chemical workflow that includes a process performed on at least one chemical is provided. A computing system encodes a representation of the at least one chemical using a chemical encoder to create at least one latent chemical representation. The computing system creates a latent experiment representation based on the at least one latent chemical representation. The computing system decodes the latent experiment representation using an experiment decoder to predict one or more properties for an output of the chemical workflow, to generate an updated representation of the at least one chemical, or to generate an updated representation of the process.

The invention discloses an architectural design method for dangerous chemical libraries of a nuclear power plant, and belongs to the technical field of architectural design, and the method comprises the steps: collecting a list of chemicals used in the nuclear power plant, and determining the information of articles stored in each dangerous chemical library; fire risk of stored articles is determined, and a design basic principle of a dangerous chemical library is determined; carrying out explosive dangerous substance type identification on stored articles in each dangerous chemical library, carrying out pressure relief area calculation and pressure relief facility setting, identifying major dangerous sources and identifying dangerous chemicals easy to explode, and carrying out building structure and anti-theft alarm device setting on the dangerous chemical libraries; building design of the dangerous chemical library is carried out on the dangerous chemical library according to the determined chemical list and various property identification results of the stored articles; and the design file is strictly examined to be in close fit with the construction process. According to the design method provided by the invention, the chemical storage safety and the management level are improved in the aspect of building design of the dangerous chemical library of the nuclear power plant.

The present invention relates to a method of determining whether a test animal and / or a product-obtaining test animal has received and / or is currently receiving treatment with at least one antibiotic and / or veterinary chemical, comprising: (a) determining a test methylation profile from genomic material, the genomic material is contained in a biological sample obtained from a test animal and / or an animal-derived product; and (b) comparing the test methylation profile obtained from (a) to a reference methylation profile obtained from a control animal of the same biometric population of the test animal wherein the control animal has not been accepted and / or has not currently accepted treatment with at least one antibiotic and / or veterinary chemical, wherein a difference in the test methylation profile of (a) compared to a reference methylation profile from a control animal indicates that the test animal has accepted and / or is currently accepted treatment with at least one antibiotic and / or veterinary chemical; and wherein the test animal is a terrestrial animal, and wherein the veterinary chemical is an antiparasitic agent, an antiviral agent, a feed additive, a water additive, a disinfectant, glutaraldehyde and / or formalin.

A downhole apparatus with an internal surface defining a cavity. The cavity houses one or more sealed packs containing chemicals used in wellbore operations. The downhole apparatus optionally includes either fluid ports to equalize the wellbore pressure or one or more compensating pistons for adjusting the volume of the cavity in response to wellbore conditions such as temperature or hydrostatic pressure. The chemicals are released into the wellbore when the downhole apparatus is milled or when the sealed packs are dissolved.

The invention discloses a reinforced protection method for an edge section of a full-paper-based container, which belongs to the technical field of paper-based container treatment, and comprises the following steps: step 1, end surface pretreatment: carrying out chip removal treatment on the cut end surface of a paper tube, and keeping a loose state of fibers; step 2, local impregnation and permeation: vertically and downwards immersing the end surface of the paper tube into the prepared solution, fixing the immersion depth to be 0.8 mm, keeping the immersion depth for 5 seconds, and enabling the paper tube to naturally permeate upwards along a gap of a paper layer by utilizing the low viscosity characteristic of the liquid; and 3, gradient curing is conducted, specifically, the treated paper tube is placed in circulating hot air at the temperature of 55 DEG C to be dried for 15 minutes. Different from a traditional method for coating the whole pipe body or compounding a plastic inner container, only the weakest cutting end face is subjected to precise treatment, the equivalent and even better protection effect is achieved, meanwhile, the use amount of chemicals is greatly reduced, the production cost is reduced, and the original advantages of air permeability of the wall body of the paper pipe and the like are kept.

The invention relates to a Pt / Ru / RuO2 heterostructure metal aerogel material and a preparation method thereof. The method is realized through a two-step simple process which comprises the following steps: firstly, reducing ruthenium trichloride and potassium chloroplatinate in an aqueous solution by taking sodium borohydride as a reducing agent to obtain precursor hydrogel; and then the hydrogel is subjected to freeze drying and annealing treatment, and the final product Pt / Ru / RuO2 heterostructure metal aerogel is obtained. According to the preparation strategy, a traditional sodium borohydride reduction method is improved, operation is easy and convenient, consumed time is short, and used drugs are not only non-toxic and harmless, but also extremely low in cost. Performance tests show that the Pt / Ru / RuO2 heterostructure metal aerogel has excellent performance in electro-catalytic hydrogen evolution (HER) and oxygen evolution (OER) reactions: under the high current density of 10 mA. Cm <-2 >, the overpotentials of HER and OER are only 17 mV and 1840 mV respectively; more notably, after continuous testing for 24 hours under the current density, the performance of the material is basically not attenuated, and excellent stability is shown. By virtue of the advantages, the material has a wide application prospect in the field of energy conversion of electrolyzed water and the like.

Provided is a method for controlling an RO system, said method being capable of reducing the amount of power consumption (i.e., CO2) and waste by reducing the amount of chemicals used or the number of times of membrane replacement, enabling stable operation, and contributing to a reduction in energy conservation and maintenance. A method for controlling an RO system provided with: a plurality of RO devices (41-44) arranged in parallel; a control unit that controls start / stop processing including operation processing and stop processing of the RO devices (41-44); and a chemical injection unit that injects a chemical that mitigates fouling when the treatment is stopped, in the method for controlling the RO system, control is performed such that the number of times of start / stop is increased as the RO device is in which the treatment capacity is easily recovered by start / stop, and the stop time is controlled in accordance with the recovery degree.

The invention relates to a synthesis method and application of a double-layer thermochromic deformation hydrogel, according to the double-layer thermochromic deformation hydrogel, CMC is adopted to perform mechanical enhancement on original PNIPAm, LAP is adopted to perform photo-initiation on a monomer, and the price of CMC and LAP is far lower than that of functionalized silicon dioxide nanoparticles and AIBA in the prior art under the same usage amount. Meanwhile, drugs used in the process are free of volatility and corrosivity, and the safety degree is higher than that of acrylic monomers used in the prior art. Besides, the use temperature of a hydrogel device in the prior art is 60 DEG C and is high, while the double-layer temperature-sensitive hydrogel in the invention can be curled only at 40 DEG C, so that the hydrogel has more advantages in temperature. By adding CMC, the volume change of the hydrogel in the heating process is remarkably reduced, meanwhile, the mechanical property of the hydrogel is greatly improved, the mechanical property of the hydrogel is further improved through impregnation of zirconium ions, and the hydrogel has a wider application scene.

This utility model discloses an integrated device for precise metering, mixing, and spraying of chemicals using a vibration-type method, belonging to the field of tailings treatment technology. It includes a main shell, a chemical input device, a mixing device, a spraying device, and a conveying device. The chemical input device is located on top of the main shell and includes a mixing chamber and a connecting unit. The mixing chamber is located on top of the main shell and connected to the spraying device via the connecting unit. The chemical input device is connected to the spraying device located inside the main shell. The spraying device is used to input chemicals into the mixing chamber inside the main shell. A raw material feeding port is located at the top of the main shell and connects to the mixing chamber. The mixing device is located inside the mixing chamber and is used to mix the special chemicals and raw materials fed into the mixing chamber. A conveying device is connected below the mixing chamber and is used to transport the mixed mixture to a pressing device. This utility model has the advantages of precisely controlling the amount of chemicals used and achieving uniform mixing.

[Problem] To efficiently set a farm field for spraying chemicals and a route for the farm field, for each of a plurality of operators. [Solution] A program to be executed by a computer comprising a processor and a memory. This program causes the processor to execute: a step for acquiring information about a plurality of farm fields to which chemicals are to be sprayed, and information about a plurality of operators responsible for spraying chemicals using a flying vehicle; a step for grouping the plurality of farm fields for each operator on the basis of the productivity of the plurality of operators; and a step for referring to a group of farm fields grouped for each operator and setting farm fields that each of the plurality of operators is responsible for and a route of spraying chemicals in the farm fields so as to satisfy a predetermined schedule.

------ Glove for nuclear, radiological, biological and chemical use Glove comprising: A. a part intended to be applied to the dorsal surface of the hand, comprising the regions of the palm (Ap), the index finger (Ai), the middle finger (Am), the ring finger (Aan) and the little finger (Aau); B. a part intended to be applied to the internal surface of the hand, comprising the regions of the palm (Bp), the index finger (Bi), the middle finger (Bm), the ring finger (Ban) and the little finger (Bau). The regions (Bi), (Bm), (Ban) and (Bau) are each formed of a piece independent of the rest of the glove, which extends on either side, along the respective finger to form a fold towards the corresponding region (Ai), (Aam), (Aan) and (Aau) with a view to joining it with it. Figure to be published with the abstract: Figure 1

The invention relates to a thermal forming plastic pipe machine. Comprising a base table, a motor control assembly arranged on one side of the base table, a pushing unit arranged on the base table, a rotating unit arranged on the pushing unit, a clamping unit arranged on one side of the pushing unit, a heating forming unit arranged on one side of the base table and a toggle clip unit arranged on one end side of the base table. The rotating unit can be used for embedding and clamping a forming rod sleeved with a machined Teflon pipe, the forming rod is at least provided with a threaded part at one end, and the rotating unit can drive the forming rod to rotate; the pushing unit can push the rotating unit to slide on the base table, the clamping unit can clamp the forming rod sleeved with the machined Teflon pipe, and the heating forming unit conducts heating and pressurizing machining action on the threaded portion of the forming rod sleeved with the machined Teflon pipe. The thread part of the forming rod is sleeved with the machined Teflon pipe, and the machined Teflon pipe is in a spiral shape. Therefore, the diversification, the convenience and the processing accuracy of processing the Teflon pipe for the chemical industry into a spiral shape can be improved.

The present disclosure relates to a method for producing high-value-added chemicals using waste plastics, the method comprising the steps of: a) pyrolyzing waste plastic feedstock to generate an oil-containing stream; b) reacting a part or all of the oil-containing stream in the presence of a catalyst in at least one circulating fluidized bed reactor; and c) separating and recovering high-value-added chemicals from the reaction product, wherein the oil-containing stream produced in step a) is fed into the reactor of step (b) without a process of removing olefins and non-hydrocarbon substances, and the catalyst contains phosphorus (P), has one or more metals selected from Cu, Ag, La, Ga, and Ni loaded thereto, and is pre-treated by pre-steaming.

Scavenging chemicals used in mitigation treatments of hydrogen sulfide in hydrocarbon streams often continue to react and form polymers that foul the processing system. Disclosed herein are methods for determining if a scavenging chemical mitigator, or its reaction or degradation product, will polymerized during or after mitigation treatments. This information allows for the optimization of mitigation treatments that pre-emptively control or prevent polymer formation. Such pre-emption measures reduce the cost and time related to remedial actions to treat polymer-fouled equipment.

This invention provides a method for removing the core of a rare earth oxide core-shell ceramic core. The method includes the following steps: Step 1, preparation of the core removal solution; Step 2, preparation of the core removal solution; Step 3, assisted core removal; Step 4, neutralization and cleaning with alkaline solution; Step 5, assisted core removal; Step 6, neutralization and cleaning with acid solution; Step 7, repeating steps 3-6 more than twice until the ceramic core inside the titanium alloy casting is completely disintegrated and removed, resulting in a titanium alloy casting with the core removed. The core removal method of this invention has the following advantages and effects: (1) the required raw materials are inexpensive; (2) the chemicals used in the core removal process are less toxic; (3) the core removal process is simple, the core removal efficiency is high, and the core removal time is short, which can be completed within 24h-36h; (4) the removal process can be carried out under normal pressure and will not cause damage, wear, or other adverse conditions to the titanium alloy casting, which is beneficial to improving the integrity of the titanium alloy casting.

The present invention belongs to the technical field of pumps, and specifically discloses an axial flow pump for chemical use, comprising a pump body and a controller, wherein a filter mechanism is provided at the bottom of the pump body, and a sewage discharge assembly is provided on the surface of the filter mechanism; wherein, the filter mechanism comprises a mounting pipe connected to the liquid inlet end of the pump body; by providing the filter mechanism, the interior of the mounting pipe can be divided into an inlet area, a sewage discharge area and an outlet area, and the filter holes provided on the surface of the connecting tube are used to intercept dirt and impurities in the sewage discharge area and store them separately; when the pressure inside the sewage discharge area is too high, the hydraulic sensor, the controller and the sewage discharge assembly can be used to achieve the purpose of relieving the pressure inside the sewage discharge area and simultaneously achieving the independent discharge of the dirt; and the filter holes can be self-cleaned in the process of discharging the dirt, without the need for manual operation by the staff, with a high degree of automation, thereby reducing the occurrence of overpressure damage to equipment due to untimely cleaning.

Disclosed are devices and methods for capturing carbon dioxide and other gases. All gas-capturing systems employ chemical fluid / media for binding purposes. One system delivers chemicals in droplet form, while another system delivers feed gas in bubble form. All systems employ an admixing chamber for confining and uniting particles of matter, as well as streaming means for placing gas in confinement. The droplet-based delivery system packetizes chemicals using an atomizing device, while the bubble-based delivery system packetizes gaseous feedstock using metering means, rerouting means, perturbation means, and stream-dividing means. The droplet and bubble systems feature common or unique advantages relating to chemical flow, surface area, and / or progressive cycling. These advantages increase the efficiency of gas-capturing devices in general and decarbonizing devices in particular.

The chemical barrel comprises a chemical barrel body (1), an anti-leakage cover (2) is arranged outside the chemical barrel body (1) in a sleeved mode, a lifting mechanism (3) is arranged between the outer side wall of the bottom of the chemical barrel body (1) and the inner side wall of the bottom of the anti-leakage cover (2), and the lifting mechanism (3) is connected with the anti-leakage cover (2). The two ends of the supporting spring (31) are connected with the outer side wall of the bottom of the chemical barrel (1), and the two ends of the damper (32) are connected with the inner side wall of the bottom of the anti-leakage cover (2); the supporting force of the supporting spring (31) and the damper (32) is between the downward pressure when the chemical barrel (1) is in an empty barrel state and the downward pressure when the chemical barrel (1) is in a full barrel state. The anti-leakage cover does not need to be lifted and dumped by a worker, the working intensity of dumping is reduced, and when chemical liquid in the chemical barrel leaks, the leakage can be perceived by the worker at the first time and corresponding disposal is carried out.

A tube comprising a first channel and a second channel, wherein each of the first channel and the second channel extends along the longitudinal axis of the tube, and wherein the tube is composed of a first heat-sealable polymer film A and a second heat-sealable polymer film B. The polymer films A and B each have a first surface (A1, B1) and a second heat-sealable surface (A2, B2), respectively. The polymer films A and B are arranged so that the heat-sealable surfaces A2 and B2 contact and adhere to each other by a heat-seal bond, and the heat-seal bond does not extend over the entire surface area of ​​the heat-sealable surfaces A2 and B2. A method of making a tube, a kit comprising a plurality of polymer films for forming a tube, and a method for delivering an injectable chemical using a tube are also described.

The invention discloses a physical expansion stripping chemical etching preparation method of MXene, which comprises the following steps: placing an MAX phase precursor in a supercritical reaction kettle, introducing carbon dioxide, regulating and controlling the temperature and the pressure to enable the carbon dioxide to reach a supercritical state, and carrying out physical expansion; after stirring at constant temperature and constant pressure for a certain time, carrying out physical puffing pressure relief treatment, and repeating the physical puffing pressure relief operation for n times; putting a product subjected to physical expansion treatment, a fluorine-free etching agent and an auxiliary agent into a supercritical reaction kettle together, introducing carbon dioxide again, regulating and controlling the temperature and the pressure to maintain the carbon dioxide in a supercritical state, and meanwhile, carrying out a supercritical state etching reaction for a preset duration in a stirring or fluid circulation manner; after the supercritical state etching reaction is completed, carrying out instantaneous blasting treatment on a reaction system; and taking out a reaction product, and washing the reaction product until the reaction product is neutral to obtain the target MXene. The chemical etching effect is improved, the chemical reaction time is shortened, and the dosage of chemicals is reduced.

The disclosed apparatus for mixing and supplying chemicals used for semiconductor processes according to the present application includes: raw chemical supply lines for externally supplying chemicals; and a mixing line for receiving the chemicals from the raw chemical supply lines to produce a chemical mixture; wherein one end of each of the raw chemical supply lines is connected to a chemical storage tank in which the chemicals are stored, and a chemical flow controller for controlling the flow rate of the chemicals is installed in each of the raw chemical supply lines, and the chemical flow controllers installed in each of the raw chemical supply lines are controlled in multiple channels using one controller, and the flow rate of each of the chemicals is preset corresponding to a mixing ratio of the chemicals and stored as a preset value, and when the chemicals are supplied for mixing, the flow rates of the chemicals are simultaneously controlled using the preset values corresponding to the mixing ratio, which are previously stored.

The present application relates to an automatic sampling and analysis method and system for high-purity chemicals for semiconductors. The collection time of a sampling target is set as a target time zone and divided into n target time sub-zones. Basic data, automatic sampling data and environmental data of the sampling target are collected in the n target time sub-zones, and basic characteristic values, automatic sampling efficiency coefficients and environmental impact coefficients of the collected sampling targets are calculated in turn. A comprehensive optimization index of the sampling target is calculated based on the basic characteristic values, automatic sampling efficiency coefficients and environmental impact coefficients. Finally, the comprehensive optimization indexes of the sampling targets in the n target time sub-zones are compared with the set comprehensive optimization index target values ​​in turn to determine whether the sampling targets in the n target time sub-zones meet the standards. The data of the sampling targets in each target time sub-zone are collected, and the influence of the sampling process and environmental factors on the analysis results is increased, thereby improving the accuracy and reliability of the analysis results.

The invention discloses a device for reducing the content of metal ions in electronic chemicals through a plasma technology, and relates to the technical field of metal ion removal. According to the device for reducing the content of the metal ions in the electronic chemicals through the plasma technology, through cooperation of the annular temperature control frame and the spiral temperature control frame, cooling treatment on a chemical solution can be completed firstly through the spiral temperature control frame, and the chemical solution flows along the top of the spiral temperature control frame till entering the machine body; according to the chemical solution temperature control device, the temperature control efficiency of a chemical solution can be improved, then temperature control treatment is achieved through cooperation of the annular temperature control frame, compared with a traditional operation mode, the temperature control effect of the chemical solution can be further improved, and the operation efficiency of the device is effectively improved.

The present invention relates to the technical field of scaling treatment for oil and water well tubulars, and in particular to a targeted delivery device for a chemical in an oil and water well and a method for using the device. The technical solution is as follows: a guide head is mounted at the lower end of a lower housing; a motor housing is mounted in the inner cavity of an upper housing, a motor is mounted in the motor housing, the output end of the motor is connected to a lead screw via a transmission shaft, the outer portion of the lead screw is engaged with a lead screw nut, the outer wall of the lead screw nut is engaged with a strip groove provided on the outer wall of the upper housing via a second screw, and the lead screw nut is driven to move along the lead screw by the rotation of the motor; the lower side of the lead screw nut is movably connected to the upper end of a connecting rod of a piston, the inner cavity of the lower housing contains chemical, the piston reciprocates up and down in the inner cavity of the lower housing, and pushes the chemical through a nozzle mounted on the guide head to be sprayed onto the scale or wax deposits on the inner wall of the downhole tubular. The present invention reduces the total amount of chemical used, avoids chemical residue in non-target areas, thereby reducing the risk of tubular corrosion and improving scaling efficiency and economy.

The present disclosure relates to the field of resource utilization-oriented treatment technologies for wastewater, and more particularly, to a resource utilization-oriented treatment method for a spent electroless nickel plating bath. The method includes oxidation de-complexation, synchronous precipitation of nickel and phosphorus, secondary precipitation of nickel, and resource utilization of sodium salt. In the present disclosure, in a reaction process, no sludge is generated to avoid secondary pollution to the environment. Further, the present disclosure has the advantages of short flow and less chemical use, greatly reducing treatment costs. In this way, this method is a low-cost and clean resource utilization-oriented treatment method capable of achieving resource utilization-oriented recovery of nickel, phosphorus, sodium, sulfate radical, or chlorine in the spent electroless nickel plating bath.

The invention belongs to the technical field of detection methods, and discloses a method for detecting the anti-aging effect of chemicals by using zebrafish behavioristics, which comprises the following steps: selecting wild zebrafish, and dividing the zebrafish into a blank control group and an experimental group; performing drug administration treatment on the tested fish; carrying out behavioral detection on the tested fish; exporting and analyzing behavioral data; the method comprises the following steps: performing anti-aging effect detection in a zebra fish model by using an average value of movement speeds in a behavioral light environment and a dark environment and speed change during light-dark conversion as indexes, and evaluating the anti-aging effect by using living zebra fish, so that the tested fish can still be used for subsequent detection and experiments of other indexes after the detection is finished. The method has the advantages of simplicity, convenience, rapidness, economy, visualization, high throughput and the like. The invention further discloses application of the method for detecting the anti-aging effect of the chemicals by using zebra fish behavioristics. The method has important significance in anti-aging effect evaluation of products in the anti-aging related field, the functional cosmetic field and the functional food field.