9 results about "Chemical effects" patented technology

The invention relates to the technical field of oxygen-enriched combustion safety and flammability limit prediction, and provides a flammability limit value prediction method and application, and the method comprises the steps: obtaining the initial parameters of a gas fuel in a mixed atmosphere of oxygen and carbon dioxide; simulating a combustion process by using an element reaction mechanism, and outputting a curve of component mole fractions changing along with time; the combustion enthalpy change rate under the target atmosphere and the virtual atmosphere is calculated based on the curve, and carbon dioxide in the virtual atmosphere is replaced with virtual gas which has the same thermophysical property but does not have chemical reactivity; respectively calculating combustion heat release, mixture heat absorption and heat radiation; and in combination with the enthalpy change rate and the energy balance equation, the combustible limit value is solved and determined through numerical iteration. By quantifying the chemical effect and thermophysical influence of carbon dioxide, the problem of insufficient precision caused by neglecting the participation of carbon dioxide in reaction and unique thermal property in the oxygen-enriched combustion environment in the existing model is solved, and the method is suitable for the safety design of a combustion system.

The present application relates to the technical field of oxygen-enriched combustion safety and flammability limit prediction, and provides a flammability limit value prediction method and application, which comprises the following steps: obtaining initial parameters of a gas fuel in an oxygen and carbon dioxide mixed atmosphere; simulating a combustion process by using a base reaction mechanism, and outputting a curve of component mole fraction changing with time; calculating a combustion enthalpy change rate in the target atmosphere and a virtual atmosphere based on the curve, wherein the carbon dioxide in the virtual atmosphere is replaced by a virtual gas with the same thermal properties but without chemical reactivity; respectively calculating a combustion heat release, a mixture heat absorption and a heat radiation; and combining the enthalpy change rate and an energy balance equation to determine the flammability limit value by numerical iteration. The present application quantifies the chemical effect and thermal physical influence of carbon dioxide, solves the problem of insufficient accuracy of existing models in the oxygen-enriched combustion environment due to the neglect of the reaction of carbon dioxide and its unique thermal properties, and is suitable for combustion system safety design.

The present application belongs to the technical field of corrosion simulation of coating, and discloses a method for simulating corrosion test of plated steel in extremely cold atmospheric environment, comprising the following steps: (a) pretreatment of the sample to be tested: acetone degreasing, alcohol cleaning, and pasting adhesive tape on both ends and one side of the sample; (b) stress loading on the sample to be tested by using a three-point bending device; (c) simulation of corrosion test: depositing corrosion medium NaHSO3 solution on the surface of the sample, and then placing the stress loading device and the sample in a high-low temperature alternating damp-heat test chamber, and performing the test according to "room temperature-constant low temperature-room temperature wetting-room temperature drying", each cycle being 12-24 h, and the total test time being 84 h-840 h. The present application can realize mechanical and chemical effects under stress and multi-environment factor coupling during the process of tensile stress under different loads, and conforms to the corrosion failure characteristics of structural parts in actual service.

The machining clamp comprises a bottom plate, two sets of soaking grooves are formed in the upper end face of the bottom plate, two sets of liquid discharging pipes are fixedly connected to the side wall of the bottom plate and communicated with the interiors of the two sets of soaking grooves respectively, two sets of side plates are fixedly connected to the upper end face of the bottom plate, and two sets of lead screw sleeves are slidably connected between the two sets of side plates. The soaking groove is in smooth transition to the end face of the bottom plate, and an elastic mechanism for driving the clamping plate to be tightly attached to the inner bottom of the soaking groove is installed on the outer wall of the sliding rod. By designing the soaking tank and cleaning the clamping plate through the cleaning solution when the clamping plate slides in, greasy dirt on the clamping plate is effectively removed, the adverse effect of greasy dirt accumulation on clamping force is prevented, after the greasy dirt is removed through the chemical effect of the cleaning solution, the clamping plate can keep high friction force and stable clamping force, and the clamping plate is not prone to falling off. Therefore, the workpiece is firmly fixed in the machining process, displacement or vibration is reduced, and machining precision is remarkably improved.

The invention discloses a solid waste harmlessness and recycling method and system based on multi-energy field cooperation and multi-source solid waste tempering, and the method comprises the steps: mixing a target main solid waste raw material with a liquid medium, adding a first-class alkaline solid waste conditioner, and carrying out high-pressure jet flow homogenization circulation treatment to obtain homogeneous slurry; transferring the homogenized slurry into a ball mill, adding a second type of solid waste-based conditioner for ball milling treatment, and realizing deep dissociation and stabilization of pollutants by utilizing a mechanochemical effect; transferring the ball-milled slurry into an ultrasonic-microbubble reaction separation tower, adding the red mud slurry, and separating heavy metal enriched scum through the synergistic effect of ultrasonic cavitation and micro-nano bubbles; treating the separated three-phase system to obtain a top-layer heavy metal enrichment, a bottom-layer purified main solid waste matrix and an intermediate liquid phase, and carrying out chemical precipitation on the intermediate liquid phase to recover phosphorus and nitrogen elements. According to the invention, deep conversion and precise separation of industrial solid waste pollutants and high-value recovery of valuable components are realized.

A high voltage discharge generating a plasma wave front is disposed within a headspace over an oil-containing liquid in order to create various chemical changes within the headspace, and ultimately within the liquid in order to inactivate various microbes, synthesize new chemicals, speed separation of a mixture, and aid in oil extraction. Such a discharge may be repeated at an optimum duration and duty-cycle to maximize the chemical effects of the non-equilibrium plasma at a substantially lower temperature than for an equilibrium plasma.

The application relates to the technical field of insulating materials, and discloses a cold-shrink cable accessory rubber material, a preparation method thereof and a cold-shrink cable accessory. The cold-shrink cable accessory rubber material comprises the following components in mass fractions: 100 parts of ethylene-propylene-diene rubber, 40-70 parts of white carbon black, 10-30 parts of kaolin, 5-20 parts of mica powder, 1-5 parts of a silane coupling agent, 2-6 parts of a peroxide vulcanizing agent, 1-4 parts of a crosslinking agent, 5-20 parts of paraffin oil and 1-3 parts of an antioxidant. The specific-structure antioxidant is used in cooperation with fillers such as the white carbon black, the calcined kaolin and the mica powder, and the physical and chemical effects are combined to effectively resist ultraviolet and oxygen aging, significantly slow down discoloration and cracking of the material in a complex outdoor environment, maintain stable electrical performance, and prolong the service life of the material.

This invention discloses a gas-electric energy synergistically coupled planetary ball mill reactor, comprising a basic planetary ball mill structure and a gas-electric energy synergistic transfer system adapted to the combined revolution and rotation motion of the ball mill jar. The system includes a coaxially arranged gas transfer component and an electric energy transfer component, achieving continuous transfer of gas and electrical energy between different motion reference frames through a two-stage rotating structure. The gas transfer channel and the electric energy transfer channel are arranged in an integrated or combined structure, achieving synchronous transmission while ensuring airtightness and electrical isolation. This allows gas and electrical energy to act on the inside, outside, or adjacent areas of the ball mill jar, thereby enabling the regulation of physical and / or chemical effects during the ball milling process. This device improves process controllability and expands its application range.

Carrier device for receiving and attaching at least one irritant body, in particular with optical, thermal, acoustic or chemical effect, comprising a carrier plate made of metal, plastic or a combination thereof, at least one holding means for fixing the body, a separating or shielding unit, at least three magnetic elements for attachment to metallic surfaces, a closed receptacle for an external control or receiving module and several openings for alternative attachment to non-metallic surfaces.