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 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-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 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.