32 results about "Cyclic strength" patented technology

The invention relates to a high-capacity reactor for fine interception of catalyst particles and photocatalytic wastewater degradation, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the microwave energy is wasted, the single-tank wastewater treatment capacity is smaller, the internal high cyclic strength is insufficient, the bubble rising path is shorter, the oxygen supply concentration ratios in key areas are insufficient, the catalyst particle interception link is weaker, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force, and occurrence of catalyst agglomeration can not be perceived immediately. The invention aims at the problems. The reactor uses a metal cage to constrain microwaves. The structure of the reactor allows substantial capacity expansion of the reactor, reinforces oxygen supply in the key reaction areas, finely intercepts the catalyst particles, can disperse the catalyst agglomerates in situ by strong force, simultaneously carries out ultrasonic cleaning on quartz tubes incidentally, can automatically and immediately turn off the related power supply when degradation reaction reaches the endpoint, and can detect main catalyst agglomeration incentive parameters.

The invention relates to a photocatalytic wastewater degradation device capable of immediately warning the tendency of titanium oxide particle agglomeration, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the microwave energy is wasted, the single-tank wastewater treatment capacity is smaller, the internal high cyclic strength is insufficient, the bubble rising path is shorter, the oxygen supply concentration ratios in key areas are insufficient, the catalyst particle interception link is weaker, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force, and occurrence of catalyst agglomeration can not be perceived immediately. The invention aims at the problems. The structure of the device limits the microwave irradiation airspace, allows substantial capacity expansion of the reactor, is favorable for reinforcing supply of air atmosphere in the key degradation reaction areas, is suitable for finely intercepting the catalyst particles, can disperse the catalyst agglomerates in situ by strong force, simultaneously carries out ultrasonic cleaning on quartz tubes incidentally, can automatically and immediately turn off the related power supply when the degradation reaction reaches the endpoint, and can warn the tendency of catalyst agglomeration.

The invention relates to a photocatalytic wastewater degradation reactor expansion method for in-situ counteraction of catalytic agglomerates, and belongs to the technical field of wastewater treatment. In the existing related technologies, the problems that a catalyst interception link is weak, the utilization of microwave energy is not ideal, the single-tank wastewater treatment capacity of a reactor is small, the major cyclic strength of internal liquid is insufficient, the ending time of degradation reaction is difficult to discern, and catalytic agglomerates can not be subjected to in-situ forced counteraction, and the like exist, and the method is designed for solving the problems. The method disclosed by the invention comprises the following main steps: drawing in the microwave irradiation range by using a metal cage; bunching and raising a bubble flow by using a megaphone-shaped component; expanding the size of a reactor; intercepting nano photocatalyst particles level by level by using an external cascaded three-level backwash filter; carrying out in-situ forced counteraction on catalyst agglomerates by using ultrasonic waves emitted from the bottom of the reactor, and simultaneously, cleaning a quartz tube; and monitoring a reaction process by using an ozone sensor, and automatically controlling related power switch mechanisms by using sensing electric signals.

The invention provides a silica sand composition which comprises silica sand having a polymer coating and a first binder, wherein, the polymer coating is a cured second binder, and the first binder and the second binder are respectively one or more selected from the group consisting of an acrylic acid resin adhesive, an epoxy resin adhesive and a polyurethane adhesive. The invention also provides a preparation method for a formed body and the formed body prepared by using the method. The method comprises the steps of mixing of all the components of the silica sand composition, molding and curing of the first binder. The formed body prepared from the composition by using the method has good water permeability, high strength and an excellent strength retention rate, and has a compressive strength of 45 to 70 MPa when in a dry state, a compressive strength of 28 to 55 MPa when in a wet state, a cyclic strength of 20 to 45.5 MPa after 5 cycles, a strength loss rate of only 27 to 60% and a permeability coefficient of 3 to 7 cm / s.

The invention relates to a high-capacity photocatalytic wastewater degradation device for precisely recycling titanium dioxide catalyst particles, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the microwave energy is wasted, the single-tank wastewater treatment capacity is smaller, the internal high cyclic strength is insufficient, the bubble rising path is shorter, the oxygen supply concentration ratios in key areas are insufficient, the catalyst particle interception link is weaker, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force and occurrence of catalyst agglomeration can not be perceived immediately. The invention aims at the problems. The structure of the device limits the microwave irradiation airspace, allows substantial capacity expansion of the reactor, is favorable for reinforcing supply of air atmosphere in the key degradation reaction areas, is suitable for finely intercepting the catalyst particles, can disperse the catalyst agglomerates in situ by strong force, simultaneously carries out ultrasonic cleaning on quartz tubes incidentally, can automatically and immediately turn off the related power supply at the degradation endpoint, and can warn the tendency of catalyst agglomeration.

The invention relates to a high-volume wastewater degradation reactor for automatically detecting the main incentive parameter of photocatalyst agglomeration, which belongs to the technical field of wastewater treatment, and aims at solving the problems of nano-photocatalyst loss, microwave energy waste, small single-tank wastewater treatment capacity of the reactor, insufficient high-circulation strength of internal liquid, hard discrimination at the final moment of a degradation reaction, unavailable in-situ powerful dissipation of photocatalyst agglomeration, unavailable immediate awareness in photocatalyst agglomeration occurrence and the like in current related background technology. According to the reactor, a metal cage is used for restraining microwave, so that the capacity of the reactor can be enlarged greatly; the structure of the reactor can be used for intensifying the high circulation of internal liquid; an external cascade filter is beneficial to accurately intercepting photocatalyst fine particles; the structure of the reactor can be used in in-situ powerful dissipation of photocatalyst agglomeration, and quartz tubes can be cleaned by ultrasonic wave incidentally; the structure of the reactor can be used for automatically closing related power supplies instantly when the degradation reaction reaches the final point; and the structure of the reactor can be used for automatically detecting the main incentive parameter of the photocatalyst agglomeration.

The invention relates to a method for non-destructive prediction of low-cycle fatigue life of thermally aged materials by using hardness, characterized in that: the steps of the prediction method are: S1, measuring and obtaining the strain-life curves of unaged and aged materials; S2, Measure the surface hardness of the material in the process of unaging and heat aging, and establish the mathematical relationship between the material hardness and the cyclic strength coefficient K' and the cyclic strain hardening exponent n'; S3, the mathematical relationship between K' and n' established in step S2 Substituting the relationship into the Basquin-Manson-Coffin equation to establish the mathematical relationship between surface hardness and fatigue life; S4, obtaining the general relationship between hardness and predicted fatigue life. The invention has scientific and reasonable design, simple and fast measurement, improves prediction efficiency, and can provide guarantee for the use safety of materials; at the same time, only non-aging and a small amount of aging test data are needed, so as to realize the fatigue resistance of this material under the aging temperature and duration The lifetime is predicted, greatly reducing the number of experiments.

The invention relates to a photocatalysis wastewater degradation reactor expanding method for automatically checking aggregation main cause parameters and belongs to the technical field of wastewater treatment. The problems that the catalytic agent is eroded, the microwave energy is wasted, the single-tank wastewater treatment amount is small, the cyclic strength of the inner liquid is insufficient, the degradation terminal point is difficultly identified, a catalyst agglomeration cannot be powerfully dissipated in situ, the catalyst agglomeration cannot be timely observed and the like exist in the conventional related technologies. The method aims to solve the series of problems. The method comprises the following steps: drawing the microwave irradiation range through a metal cage, bunching the rising bubble flow through a horn-shaped member, expanding the size of the reactor, gradually intercepting catalyst particles by using an external cascade three-stage backwash filter; dissipating the catalyst agglomeration by using the ultrasonic in-situ power at the bottom of the reactor, and incidentally cleaning the quartz tube; sensing the reaction progress by using an ozone sensor, and automatically controlling the related power switch mechanism by using a sensing electric signal; and automatically checking aggregation main cause parameters, and automatically giving an alarm when the index exceeds the limit.

The invention relates to a high-capacity reactor provided with an agglomeration incentive detection mechanism and used for photocatalytic wastewater degradation, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the microwave energy is wasted, the single-tank wastewater treatment capacity is smaller, the internal high cyclic strength is insufficient, the bubble rising path is shorter, the oxygen supply concentration ratios in key areas are insufficient, the catalyst particle interception link is weaker, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force and occurrence of catalyst agglomeration can not be perceived immediately. The invention aims at the problems. The reactor uses a metal cage to constrain microwaves. The structure of the reactor allows substantial capacity expansion of the reactor, reinforces oxygen supply in the key reaction areas, finely intercepts the catalyst particles, can disperse the catalyst agglomerates in situ by strong force, simultaneously carries out ultrasonic cleaning on quartz tubes incidentally, can automatically and immediately turn off the related power supply when degradation reaction reaches the endpoint, and can detect main catalyst agglomeration incentive parameters.

The invention relates to a reactor for reinforcement of catalyst particle interception and microwave synergistic photocatalytic wastewater degradation, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the catalyst intercepting link is weaker, the single-tank treatment capacity of the reactor is smaller, the repetitive operation frequency is high, the internal cyclic strength of liquid is insufficient, ozone utilization is incomplete, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force, and occurrence of catalyst agglomeration can not be perceived immediately. The invention aims to solve the problems once. The structure of the reactor separates and limits the microwave irradiation area, guides the ozone bubble flow to key degradation reaction areas, finely intercepts the catalyst particles with an external cascaded filter, can disperse the catalyst agglomerates in situ by strong force, simultaneously carries out ultrasonic cleaning on quartz tubes incidentally, can automatically turn off the related power supply when the degradation reaction reaches the endpoint, and can actively detect the tendency of catalyst agglomeration and carry out automatic warning.

The invention relates to a method for expanding the capacity of a reactor capable of actively detecting agglomeration incentives and used for photocatalytic wastewater degradation, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the microwave energy is wasted, the single-tank wastewater treatment capacity is smaller, the internal high cyclic strength is insufficient, the oxygen supply concentration ratios in key areas are insufficient, the catalysts run away, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force, and occurrence of catalyst agglomeration can not be perceived timely. The invention aims at the problems. The method comprises the main steps of constraining microwave irradiation airspace with a metal cage to be convenient for substantial capacity expansion of the reactor; releasing the bubble flow to the key degradation reaction areas in a concentrated manner; using an external cascaded three-stage back-flushing filter to intercept the catalysts by stages; using ultrasonic waves from the bottom of the reactor to disperse the catalyst agglomerates in situ by strong force, and simultaneously cleaning quartz tubes incidentally; using an ozone sensor to perceive the degradation endpoint, and automatically disconnecting the power supply at the degradation endpoint; and automatically detecting the tendency of catalyst agglomeration.