48results about How to "Guaranteed oxidation effect" patented technology

The invention discloses application of a metal oxide modified CePO4 catalyst to collaborative denitration and demercuration. The application includes introducing medium-high temperature flue gas containing elemental mercury and nitrogen oxide into a catalyst loaded catalytic apparatus. Specifically, the main component of the catalyst is cerium phosphate, and the modification component is at least one of cobalt, manganese, copper, iron, vanadium, cerium, molybdenum and tin metal oxides. The temperature of the medium-high temperature flue gas is 250-420DEG C. According to the application of the metal oxide modified CePO4 catalyst to collaborative denitration and demercuration, the oxidation efficiency to null valence mercury in high temperature flue gas is high, the NO is the flue gas can promote and enhance the catalytic efficiency of the catalyst, and the practicability is strong. In addition, the catalyst has good medium-high temperature SCR activity and anti-sulfur and waterproof performance.

The invention discloses a method for producing high-quality steel through abandoned cast steel bricks. The method includes the following steps that firstly, converter high-carbon-catch tapping is conducted; secondly, in the tapping process, a siliceous deoxidizing agent, lime slag charge and alloys are added; thirdly, LF furnace refining is conducted; fourthly, white slag post component and refining slag analysis is conducted; fifthly, according to refining slag components, furnace slag components are adjusted to a CaO-SiO2-Al2O3 ternary phase diagram area A through the abandoned cast steel bricks; sixthly, component adjustment and soft blowing are conducted, components are adjusted to regulated values according to steel sample components, and according to the refining slag components, theslag components are adjusted to the CaO-SiO2-Al2O3 ternary phase diagram area A through the abandoned cast steel bricks; seventhly, argon blowing processing is conducted, the vacuum degree is smallerthan or equal to 100 Pa, and the vacuum keeping time is not shorter than 15 min; and eighthly, continuous casting is conducted. The method effectively overcomes the defects that an existing method inthe current industry is high in cost, high in electricity consumption, long in production period and not capable of achieving circulation.

The landfill leachate bioreactor comprises a reaction box, a water outlet in the lower portion of the right side of the reaction box is fixedly connected with the water inlet end of a lifting pump, and the water inlet end of the lifting pump is fixedly connected with a water inlet of an electrolytic treatment device. According to the landfill leachate bioreactor based on the modified fiber filler, a water inlet pipe is connected with a leachate outlet pipe, a driving motor II drives a rotary water injection pipe to rotate through the rotary water injection pipe, and a flow equalizing pipe rotates along with the rotary water injection pipe, so that leachate in the flow equalizing pipe can be discharged downwards through a drainage hole while the flow equalizing pipe rotates; the flow equalizing pipe is changed from static leachate discharge to rotary residual filtrate discharge, so that the position of the flow equalizing pipe is in a continuously changing state, and the leachate is more uniformly and comprehensively distributed when entering the reaction box; further, the filter material is in full and comprehensive contact with the upper layer modified zizania aquatica shell fiber filter material structure and the lower layer coconut shell fiber filter material structure.

The invention discloses a method and system for removing organic impurities from salt manufacturing brine. The method comprises the following steps: regulating the pH value of the salt manufacturing brine to be 1-6, then enabling the salt manufacturing brine after pH value regulation to enter a first-stage reactor of a reaction system formed by series connection of at least two stages of reactors, wherein discharged materials of each stage of reactor are divided into cycle materials and net discharged materials, enabling the cycle materials of all stages of reactors except the last-stage reactor to return and enter the corresponding-stage reactor, and enabling the net discharged materials to enter the next-stage reactor; and adding an oxidizer and a catalyst to all stages of reactors, performing a reaction under UV irradiation, finally enabling the cycle materials of the last-stage reactor to return and enter the corresponding-stage reactor, regulating the pH value of the net discharged materials of the last-stage reactor to be neutral, and performing filtration so as to obtain purified brine. Through the adoption of the method, the application of a Fenton reagent in the purification field of low-concentration organic aqueous solutions is realized, the technical problem that a Fenton reaction can only be in intermittent production is solved, and the method has the characteristics of being good in impurity removal effect, large in treatment capacity, safe and environment-friendly, and realizing continuous production.

The invention provides an assistant wastewater treatment process. A tubular continuous reaction device is adopted, the device includes a filter, a sewage buffer tank, a sewage pump, a free radical generator, an air compressor, an air buffer tank, an air flow meter, a heat exchanger, a high-pressure separation tank and a liquid storage tank, the sewage flow is controlled by using a composite catalyst and monitoring the sewage concentration by arranging a sewage concentration detection device, the tubular free radical oxidation effect of assistant wastewater is guaranteed, the catalytic effect can still be guaranteed when the process is applied to the assistant wastewater with a wide range of concentration fluctuation, continuous operation for 100 hours is conducted, the average removal rateof CODcr is 95% or above, and BOD5 / CODcr after treatment is greater than 0.6.

The invention provides a coal chemical looping combustion mercury removal device, comprising: a fuel reactor; a U-phase valve of the fuel reactor connected to the fuel reactor; an air reactor connected to the U-phase valve of the fuel reactor; an air cyclone separator , connected to the air reactor; the flue gas cyclone separator, connected to the fuel reactor; the U-phase valve of the air reactor, connected to the air cyclone separator, the flue gas cyclone separator and the fuel reactor at the same time; the condenser, connected to the flue gas Cyclone separator connection; SCR denitrifier, connected to condenser; flue gas dust collector, connected to SCR denitrifier; wet flue gas desulfurizer, connected to flue gas dust collector; and CO 2 The collector is connected with the wet flue gas desulfurizer. The invention also provides a mercury removal method based on a coal chemical chain combustion mercury removal device to remove mercury from flue gas generated by combustion.

The invention discloses a river channel ecological management project. A river channel includes an original river channel and a purified river channel; one end of the original river channel is a starting point, and the other end of the original river channel is a terminal point; the two ends of the purified river channel are respectively connected to the starting point and terminal point of the original river channel; the original river channel and purified river channel are respectively provided with an original valve and a first purifying valve at the starting point; the purified river channel is successively provided with a water flow mitigation device, a filter bed, a microbial oxidation section and an ecological treatment area along a bank in the river channel from the purifying valveto a downstream direction; and the upstream of the original river channel is provided with the purified river channel, the split purification of water from the upstream can be performed through the controlling of a gate, so that the normal circulation of the original river channel and the normal travelling of residents living on the two sides of the river channel cannot be affected.

The invention provides a semiconductor structure, and a formation method thereof. The formation method of the semiconductor structure includes the steps: a cobalt layer is formed; the cobalt layer isplanarized by a chemical mechanical grinding process, and the grinding lubricant utilized by the chemical mechanical grinding process is a weakly alkaline grinding lubricant; and the solutions utilized by the cleaning operation and the conveying operation in the chemical mechanical grinding process are all weakly alkaline solutions. The formation method of the semiconductor structure adopts the weakly alkaline grinding lubricant, and the solutions utilized by the cleaning operation and the conveying operation in the chemical mechanical grinding process are weakly alkaline solutions, so that compared with a scheme of performing the cleaning operation and the conveying operation by using an acidic grinding lubricant and deionized water, the formation method of the semiconductor structure canimprove the problem of corrosion of the cobalt layer so as to improve the grinding quality of the cobalt layer to improve the electrical properties of the semiconductor structure.

A semiconductor structure and a forming method thereof, the forming method comprising: forming a cobalt layer; planarizing the cobalt layer by using a chemical mechanical polishing process, wherein the polishing liquid used in the chemical mechanical polishing process is a weakly alkaline polishing liquid; Wherein, the solutions used in the cleaning operation and the conveying operation in the chemical mechanical polishing process are weakly alkaline solutions. The present invention adopts weakly alkaline grinding liquid, and the solutions used in the cleaning operation and conveying operation in the chemical mechanical grinding process are all weakly alkaline solutions, compared with the use of acid grinding liquid and deionized water for the cleaning operation And the solution of the transmission operation, the present invention can improve the corrosion problem of the cobalt layer, thereby improving the grinding quality of the cobalt layer, and further improving the electrical performance of the semiconductor structure.

The invention belongs to the biomass energy utilization technology field, and discloses a cobalt-based Fischer-Tropsch fixed bed catalyst used for biomass synthetic gas and a preparation method therefor. The catalyst is composed of the following materials, by weight, 5-15% of Co3O4, CuO with a content of being more than 0 and less than or equal to 5%, 0.1-1% of RuO2, 3-20% of ZrO2, and the balance being gamma-aluminum oxide. The preparation method is as follows: first, gamma-aluminum oxide with a BET specific area of 180-210 m<2> / g and an average pore size of 14-16 nm is weighed according to required weight, the gamma-aluminum is peptized with 1-3wt% of concentrated nitric acid, then 0.5-2wt% of a pore forming agent CMC and 0.5-2wt% of auxiliary extruding agent sesbania powder are added, after the above mixture is mixed, pinched, ground and agglomerated, strip extrusion molding is carried out, after drying and calcinations, an alumina carrier is obtained; second, ZrO2 component is loaded through a saturation impregnation method, and a catalyst carrier is obtained after drying and calcination; third, Co3O4, CuO and RuO2 components are loaded through a saturation impregnation method, and a catalyst is obtained after drying and calcination. The catalyst has high CO hydrogenation catalytic activity and C<+5> selectivity, and low CH4 and CO2 selectivity.

The invention discloses a cerous phosphate based catalyst for zero-valent mercury oxidation. The catalyst is mainly composed of cerous phosphate, and comprises modification components; wherein the modification components are composed of at least one oxide of cobalt, manganese, copper, iron, vanadium, cerium, molybdenum, tin, and the like. The invention also discloses a preparation method and applications of the catalyst. The preparation process is simple, and the operation is convenient. Compared to the prior art, the catalyst has the following advantages: (1) the active components of the catalyst are all common metal oxides, the common metal phosphate is taken as the carrier, the raw materials are simple and easily available, and the operation is convenient; (2) the catalyst has a very good sulfur-resistant performance; (3) the CePO4 catalyst, which has been modified by metal oxides, is well adapt to the flue gas. The provided catalyst can fully utilizes the NO in flue gas to greatly promote the oxidation of zero-valent mercury. The great dependence on HCl of conventional catalysts is gotten rid of.

The invention discloses an application of a tellurium-based composite film as an SOI (Semiconductor on Insulator) material. The tellurium-based composite film is of a composite film structure formed in a manner that TeO2 and / or Te are embedded among SiO2-containing particles to form Te / TeO2-SiO2. The tellurium-based composite film is applied to an SOI device, and a Schottky diode device which is of an SOI structure taking the tellurium-based composite film as a silicon insulation layer is manufactured. The test research proves that the tellurium-based composite film has the characteristics of high resistance property, smaller dielectric constant, high forbidden band width, high critical breakdown electrical field, high electron mobility and the like, and becomes an ideal insulation material for manufacture of the SOI device. According to the invention, the problem on the SOI insulation layer is solved, and the application field of the tellurium-based composite film is developed.

The invention discloses an aluminum alloy surface anti-corrosion treatment method which comprises the following steps: a, sequentially carrying out dust removal and drying treatment on aluminum alloyto obtain a product a1; b, placing the product a1 in a roller polishing machine with a motor rotating speed ranging from 80 r / min to 90 r / min, adding a polishing agent for polishing treatment for 50 min, and obtaining a product b1; c, washing and degreasing the product b1 to obtain a product c1; d, washing the product c1 with water and carrying out alkaline etching treatment to obtain a product d1; e, washing the product d1 with deionized water, and oxidizing an electrode to obtain a product e1; and f, sealing holes of the product e1 to obtain finished aluminum alloy. The method has the advantages that the oxidation electrolyte is not polluted, and the pass percentage of the product is higher.

The invention discloses a method for purifying yellow phosphorus by adopting methods of activated carbon adsorption together with dilute nitric acid rinsing. Firstly, activated carbon and molten industrial yellow phosphorus are mixed and stirred in a refining kettle, and after the adsorption is completed, the activated carbon is separated from the yellow phosphorus by a filter machine; then the processed yellow phosphorus is circularly rinsed with dilute nitric acid in an acid pickling tower; residual organic matters, arsenic and low-price metal ions in the yellow phosphorus, which are not adsorbed by the activated carbon, are oxidized by utilizing the oxidizability of the dilute nitric acid; and afterwards, the yellow phosphorus is circularly rinsed in a water washing tower by using deionized water, thereby completing yellow phosphorus purification. The invention adopts a process with treatment methods of activated carbon adsorption, dilute nitric acid rinsing and deionized water rinsing, and integrates the advantages of various methods; and the content of arsenic in the acquired yellow phosphorus is reduced to below 20 ppm, so that high-purity yellow phosphorus satisfying the requirement for producing electronic grade phosphoric acid can be acquired, and the hidden danger of explosion caused by using high concentration nitric acid is avoided.