88results about How to "Solve poisoning" patented technology

The invention discloses a MEMS optical spectrum gas sensor, which utilizes optical spectrum to realize qualitative and quantitative analysis of object gas. The sensor obtains the concentration of object gas via the adsorbed amount of infrared light emitted by the discharge of the target gas in the object, while the adsorbed amount is determined by the light intensity difference between the infrared light of a reference chamber and a measurement chamber. The sensor is mainly composed of a radio frequency luminous tube, a target gas characteristic adsorption reference chamber (a main reference chamber), a target gas characteristic adsorption measurement chamber (a main measurement chamber), a non-characteristic adsorption measurement (an auxiliary measurement chamber) and a non-characteristic adsorption reference chamber (an auxiliary reference chamber). The main reference chamber and the main measurement chamber are used for detecting the concentration of target gas. The auxiliary reference chamber and the auxiliary measurement chamber are used for determining if the infrared adsorption in the main measurement chamber is caused by interference gas. The invention can resolve the defects of prior sensors such as low selectivity, low interference resistance and short service life, having low cost and wide application.

The invention discloses a reactivation method of a biotin-intermediate hydrogenation palladium-carbon catalyst. The current biotin-intermediate hydrogenation palladium-carbon catalysts have the defects of deep poisoning and difficult treatment of poisoning impurities. The reactivation method comprises the following steps: firstly, washing an inactivated palladium-carbon catalyst with an alcohol, ketone or ester solvent, filtering, washing with pure water, performing oxidation treatment on the palladium-carbon catalyst with hydrogen peroxide, washing the palladium-carbon catalyst with alkaline water after oxidation treatment, then washing with pure water to neutral, filtering, adding a reducer for performing reduction after filtering, washing the palladium-carbon catalyst with pure water to neutral, filtering and drying to obtain the reactivated palladium-carbon catalyst. The reactivation method effectively activates deeply poisoned palladium-carbon catalysts, has high activation efficiency, restores the activity of the poisoned catalysts like a raw catalyst, can effectively solve the problem of catalyst poisoning when applied in production, realizes continuous application and reduces the production cost.

The invention relates to paraquat-containing water dispersible granules for pesticides and herbicides, and a preparation method for the paraquat-containing water dispersible granules. The invention aims to solve the problem of animal poisoning in the processes of producing, storing and using the conventional paraquat water dispersible granules. The paraquat water dispersible granules comprise the following components in percentage by weight: 5 to 95 percent of paraquat, 0.1 to 2 percent of wetting agent, 3 to 8 percent of dispersing agent, 1 to 35 percent of disintegrating agent, 0.1 to 4 percent of stabilizing agent, 0.1 to 4 percent of adhesive and the balance of filler. The paraquat water dispersible granules with the formula have the characteristics of good weeding effect, quick disintegration, high dispersibility, light pollution to environment, safety for users, simple packaging, convenience for storage and transportation and the like in the using process.

The invention relates to the field of wear-resistant coatings, in particular to a high-hardness wear-resistant thermal-shock-resistant thick tantalum coating and a preparation method thereof. The tantalum coating comprises 100% of alpha-phase tantalum and has relatively high toughness. Meanwhile, trace nitrogen atoms are fixedly dissolved in the alpha-phase tantalum of a body-centered cubic lattice, and the hardness and elasticity modulus of the tantalum coating are improved, so that the wear resistance and thermal shock resistance of the coating are improved. The final thickness of the tantalum coating can reach 60 microns or above. The preparation method of the high-hardness wear-resistant thermal-shock-resistant thick tantalum coating is magnetron sputtering under the environment of argon and nitrogen. Pure tantalum serves as a target material, under a certain vacuum degree, argon (Ar) and nitrogen (N2) are used as sputtering gas, and a layer of nanocrystalline thick tantalum coating is directly deposited on the surface of a base material. The coating has excellent comprehensive properties such as high hardness, high toughness, wear resistance and thermal shock resistance.

The present invention discloses a method for preparation of formaldehyde-free plywood from scrap plastic alloys. Different scrap plastics are used to prepare plastic alloy film, which is then used as an adhesive material for the preparation of new plywood without formaldehyde emission. The formaldehyde-free plywood according to the present invention is prepared by the following steps: different scrap plastics are crushed, cleaned separately, and then corresponding fillers and additives are added to the above crushed material or their mixtures which mixed according to a certain blending ratio; plastic alloy film of certain size and thickness is prepared after the film blowing and rolling processes; after being assembled with wood veneers to form a lay-up mat, the mat is hot pressed and then cold pressed. The present invention provides a method of preparing non-toxic and environmentally friendly formaldehyde-free plywood, solving the problem that the environment and human beings being poisoned by the free formaldehyde released from ordinary plywood and at the same time providing a way of recycling and reusing scrap plastics.

The invention belongs to the technical field of intermediate synthesis in fine chemical engineering, and particularly relates to a novel industrialized synthesis technique for preparing cinnamic acid from cinnamic aldehyde by catalytic oxidation. The technique comprises the following steps: (A) adding sodium hydroxide, pure water and catalyst mixed solution in a mass ratio of (8-40):180:(1.1-2.2) into a reaction kettle, stirring, introducing pure oxygen, dropwisely adding cinnamic aldehyde into the mixed solution at proper rate to generate sodium cinnamate, and standing for 10-40 minutes to deposit the catalyst; and (B) leading out the sodium cinnamate solution obtained in the step (A), carrying out acid precipitation at 70-80 DEG C, keeping the reaction for 15-40 minutes, and naturally cooling to room temperature, thereby obtaining the cinnamic acid. The catalyst is nano silver particles. By adopting the supporter-free nano silver particles as the catalyst for the first time, the invention solves the problems of catalyst poisoning, high shedding tendency, high loss and the like, simplifies the production technique, greatly lowers the production cost, has the advantage of high yield, and implements industrialized mass production.

This invention discloses a proton exchange film and its preparation method. The film is made of a ceramic thin film with thickness of h is less than or equal to 1mm and distributed with several microholes on it with the diameter n is less than or equal to 2mm, distributed on the whole thin film and fully filled with high conductivity electrolyte. Diameter of hole n is better is nanometer degree. The preparation method is as follow: first to prepare ordered microholes on the metal film with thickness in h is less than or equal to 1mm to be oxidated to ceramic film by electrochemical or other ways, then to fill with high conductivity electrolyte. The above mentioned metal film is better A1 film with the advantage of easy filming, low cost solving the problem of catalyst poisoning by increasing operation temperature of the proton exchange film.

The invention discloses a coke oven flue gas waste heat and desulfurization and denitration dedusting system. The system comprises a waste heat recovery subsystem, a dry desulfurization subsystem, a dedusting subsystem, an ammonia water treatment subsystem, an SCR denitration subsystem and a chimney. A flue gas inlet end of the waste heat recovery subsystem is communicated with a coke oven main flue, a flue gas outlet end of the waste heat recovery subsystem is connected to a flue gas inlet end of the dry desulfurization subsystem, a flue gas outlet end of the dry desulfurization subsystem is communicated with a flue gas outlet end of the dedusting subsystem, an input end of the SCR denitration subsystem is communicated with an output end of the ammonia water treatment subsystem, and a flue gas outlet end of the SCR denitration subsystem is communicated with the chimney. The system provided by the invention performs waste heat recovery, desulfurization, dedusting and denitration treatment on coke oven flue gas, enables coke oven flue gas to reach the emission standard requirements, and has the characteristics of excellent economic performance and good environmental protection effect.

The invention discloses a deactivator. The deactivator comprises the following raw materials by mass percentage: 10-20% of a metal oxide, 20-40% of an oxidizing agent, 5-20% of an organic amine, and 25-40% of a solvent. The deactivator comprises the following steps: mixing the organic amine and the solvent, adding the metal oxide, heating the materials to the temperature of 90 DEG C, dropping the oxidizing agent so that the oxidizing agent and metal oxide are subjected to a reaction, controlling the reaction temperature at 90-120 DEG C; after the reaction is complete, and filtering a reaction solution to remove impurity to obtain the deactivator. The deactivator enables reasonable complex formulation of the components, antimony oxide is converted to pentavalent antimony under effect of hydrogen peroxide, and is simultaneously mixed with the organic amine and water, catalyst poisoning problem can be solved, hydrogen yield is reduced, light oil yield is increased, and the deactivator is suitable for a catalytic cracking apparatus with high residual oil-blending percentage.

The invention discloses Arthrobacter sp. HW08 for degrading swainsonine, which is preserved in a common microbe center of the China Microbial Culture Preservation Commission in September 28th, 2009 and has the preservation number of CGMCC No. 3313. The bacterial colony of a bacterial strain is in a circular shape and gradually changed into faint yellow from oyster white with the prolongation of culture time, has a smooth, moist and raised surface and neat edges and is non-transparent; and the bacterial strain is cultured within 48 hours in an inorganic salt culture medium, basically belongs to a stab cell, has the size of 0.3-0.5 micrometer*0.5-1.0 micrometer, is gradually changed into a ball shape after cultured for 48 hours and has the diameter about 0.60-0.8 micrometer. The bacterial strain is obtained by separating and screening from soil embedding yellowflower crazyweed herbs (loco weeds) and has the capacity of efficiently degrading the swainsonine, i.e. toxins of the loco weeds.

The invention discloses a liquid culture medium for detecting beta-galactosidase and application of the liquid culture medium in bacterium identification. Every 1,000 ml of the liquid culture medium for detecting beta-galactosidase is prepared from 5-50 g of nutrient substances, 2-10 g of sodium chloride, 50-250 ml of 0.2 mol/L PBS, 0.5-4 g of a specificity chromogenic substrate, 0.5-4 g of an enzyme induction agent, 0.1-10 ml of a cosolvent and 0.1-10 ml of a protection agent. According to the culture medium, 5-bromine-4-chlorine-3-indol-beta-D-galactoside is used as a substrate, the low-toxic cosolvent and the protection agent are adopted, and beta-galactosidase of living bacteria can be accurately and effectively detected through a liquid method; the culture medium can be applied to a commercial identification testing card, a drying substrate in a micro hole can be effectively redissolved, beta-galactosidase of the living bacteria is detected, the negative and positive results are clearer, and the identification accuracy for clinical common gram negative and positive bacteria is improved.

The invention discloses selenium-rich fine fodder for feeding cattle and sheep and a using method thereof. The selenium-rich fine fodder comprises rice bran having a selenium content of 1-30 [mu]g/g and rice straw powder having a selenium content of 2-50 [mu]g/g. The weight ratio of the rice straw to the rice bran is 0.5-1:7-9. The selenium-containing rice bran and the selenium-containing rice straw are obtained by fertilizing a selenium fertilizer during the culturing process of rice. The selenium relates to organic selenium which is mainly selenium-substituted amino acids. According to the fine fodder and the using method thereof, animal absorption is achieved in a manner of the organic selenium, thus solving the problems of animal poisoning and low absorption.

The invention relates to a bipolar membrane electrolysis method for preparing carbon monoxide by electrolyzing carbon dioxide in an organic electrolyte and simultaneously producing chlorine and metal hydroxide as byproducts, and belongs to the technical field of phosgene chemical industry. The electrolytic tank is divided into a cathode chamber, a middle chamber and an anode chamber by a bipolar membrane and a cation exchange membrane to form a three-compartment electrolytic tank; wherein the electrolyte in the cathode chamber is an organic composite electrolyte in which a large amount of carbon dioxide is dissolved, the electrolyte in the middle chamber is a metal hydroxide aqueous solution, and the electrolyte in the anode chamber is a metal chloride aqueous solution. In the electrolytic reaction process, carbon monoxide is generated on the cathode, chlorine is generated on the anode, and the content of metal hydroxide in the middle chamber is increased. The method can synchronously produce carbon monoxide, chlorine and metal hydroxide under the conditions of normal temperature and normal pressure. The method has the advantages of short process flow, simple operation method, low production cost, small occupied area of equipment, easiness in starting and stopping, greenness, no pollution and the like.