293 results about "Glyphosate" patented technology

The invention discloses a double-recognition fluorescent molecular probe, a preparation method thereof and application of the double-recognition fluorescent molecular probe in detection of lead ions and / or glyphosate, and relates to the technical field of detection of lead ions and pesticide glyphosate. The double-recognition fluorescent molecular probe disclosed by the invention is a Schiff base type probe which takes dicyanoisophorone and benzoyl hydrazine as fluorophores. The invention also relates to application of the double-recognition fluorescent molecular probe in lead ion sensing detection. The complex of the double-recognition fluorescent molecular probe and lead ions can be used for sensing detection of glyphosate. The double-recognition fluorescent molecular probe provided by the invention has the advantages of easily available raw materials and simple operation. According to the present invention, the quantitative detection of the lead ions / or the glyphosate by the probe through the different functions displayed by the ultraviolet and fluorescence spectra is achieved, the reversibility is strong, the multi-time cyclic utilization can be achieved, the selectivity is good, the influence by other metal ions is not easily generated, the detection limit is low, and the excellent application imaging is provided in animal bodies such as cells, zebra fish and the like.

The invention discloses a preparation method of a carbon dot nano-enzyme, which comprises the following steps: dissolving oxalic acid, polyethyleneimine and ferric nitrate in ultrapure water, heating, mixing and reacting, cooling to room temperature, centrifuging, filtering, dialyzing, and taking supernate to obtain the carbon dot nano-enzyme. The prepared oxalic acid carbon dot nano-enzyme is matched with acetylcholin esterase, acetylcholine, 3, 3 ', 5, 5'-tetramethyl benzidine and H2O2 to construct a colorimetric and fluorescent dual-mode detection method for glyphosate in fruits and vegetables. The oxalic acid carbon dot nano-enzyme is prepared by doping ferric nitrate and tetraethylenepentamine into oxalic acid serving as a precursor, the oxalic acid carbon dot nano-enzyme has excellent peroxidase-like activity, a colorimetric and fluorescent dual-mode detection method of glyphosate is constructed through the oxalic acid carbon dot nano-enzyme, dual-mode detection results can be mutually verified, and the detection result is accurate. And the accuracy and the reliability of a detection result are remarkably improved.

The invention discloses a wheat mutant protein with glyphosate resistance, a gene and application thereof, and belongs to the technical field of plant breeding. The invention discloses wheat mutant proteins GR1 and GR19 with glyphosate resistance, six mutation sites and three mutation sites exist on an ESPSP protein respectively, and amino acid sequences of the 128 to 308 sites and amino acid sequences of the 133 to 308 sites are shown as SEQ ID NO. 4 and SEQ ID NO. 5 respectively. Two mutants with glyphosate resistance and excellent agronomic traits are found in a wheat mutant group by taking glyphosate as a screening agent, the two mutants are named as common wheat ZM9-GR1 and common wheat ZM9-GR19, and the invention discloses application of the mutants in plant breeding. The invention also discloses a method for cultivating glyphosate-resistant wheat by using the mutant for backcross breeding and cross breeding. The invention has important application value in plant breeding and agricultural production.

The invention relates to the technical field of biological genes, in particular to a rice herbicide-resistant OsEPSPS mutant gene, a protein and application thereof. The rice herbicide-resistant OsEPSPS mutant gene provided by the invention is characterized in that the 836th site of the nucleotide sequence of a wild rice OsEPSPS gene is mutated, and T is mutated into C. A plant containing the rice herbicide-resistant OsEPSPS mutant gene or the rice herbicide-resistant OsEPSPS mutant protein has remarkable resistance to glyphosate herbicide and can normally grow in the herbicide almost without being influenced, and under the same condition, the growth of a wild plant is remarkably inhibited until the wild plant dies, so that the rice herbicide-resistant OsEPSPS mutant gene or the rice herbicide-resistant OsEPSPS mutant protein has a good application prospect. The mutant gene and the mutant protein have huge market economic prospects.

The utility model relates to the technical field of pneumatic conveying and sorting of colloidal particles, in particular to pneumatic conveying and sorting equipment for colloidal particles. According to the technical scheme, the device comprises a sorting box, an inner cavity is formed in the sorting box, a bottom opening is formed in the front side of the bottom of the inner cavity, a high-quality collecting box, a light-quality collecting box and a dust collecting box are arranged in the bottom opening, a feeding port is formed in one side of the upper portion of the sorting box, and a hopper is fixed in the feeding port; a fan box is fixed to the side, close to the feeding port, of the sorting box, a main air opening is formed in the position, aligned with the fan box, of the side wall of the sorting box, an auxiliary air channel is formed in the middle of the bottom of the main air opening, a sieve plate is movably installed in the inner cavity and located above the high-quality collecting box, and a lower opening of the auxiliary air channel is aligned with the upper portion of the sieve plate. After wind power is used for mass sorting, appearance screening is conducted through vibration of the screen plates, the purpose of multi-layer screening is achieved, and screening accuracy is improved.

The present invention relates to the technical field of reaction kettles, particularly to a glyphosate isopropylamine salt aqueous solution production reaction kettle, which comprises a stirring tank, the top end of the stirring tank is provided with a support frame, the inner wall of the stirring tank is provided with a stirring cooling mechanism, and the outer wall of the support frame is provided with a liquid storage tank. Through cooperation of a second stirring piece, a storage shell, a communicating pipe, a first pull rod and a first hydraulic plug, in the rotary stirring process of the second stirring piece, cooling kerosene directly dissipates heat of reactants, and the situation that the temperature of the reactants exceeds 80 DEG C, and consequently the quality of the reactants is reduced is avoided; in the prior art, the temperature of the stirring tank is reduced firstly and then the temperature of the reactant is reduced, so that the steps of reducing the temperature of the stirring tank, reducing the cooling time and avoiding quality reduction caused by overlong heat dissipation time of the reactant are omitted, meanwhile, when cooling is not needed, cooling kerosene enters the liquid storage tank through the storage shell and air pressure, and the cooling effect is improved. And the cooling effect of the device is improved, and the cooling time is shortened.

The invention discloses a rice EPSPS enzyme mutant, an expression cassette, a recombinant bacterium or an application thereof, and relates to the technical field of plant genetic engineering. The invention can obtain a glyphosate-resistant rice EPSPS enzyme by mutating a wild-type rice EPSPS enzyme at a specific position, and after transforming the wild-type rice EPSPS enzyme into a plant, the rice EPSPS enzyme mutant can be expressed and has glyphosate resistance. The rice EPSPS enzyme mutant provided by the invention can effectively solve the problem of non-selective damage to crops by herbicides such as glyphosate, and provides a new approach for cultivating glyphosate-resistant crop varieties. At the same time, the rice EPSPS enzyme mutant, nucleic acid molecule, expression cassette or vector or recombinant bacterium or recombinant cell provided by the invention has broad application prospects in cultivating glyphosate-resistant rice.

A transgenic cotton event, Gh_CSM63718, is provided. Transgenic plant cells, plant parts, plants, seeds, progeny plants, and agricultural and commodity products containing event Gh_CSM63718 are also provided. Recombinant DNA molecules unique to the event Gh_CSM63718, and methods of using and detecting Gh_CSM63718 are also provided. Cotton plants containing the event Gh_CSM63718 exhibit tolerance to glufosinate, B-triketone HPPD inhibitors, dicamba, glyphosate, PPO inhibitors, and combinations of any thereof.

The invention provides a V2O5-NC nano-enzyme as well as preparation and application thereof. The V2O5-NC nano-enzyme is dark green powder and has a stacked layered structure, the specific surface area is 16-18m < 2 > / g, mesoporous distribution is realized, the average particle size is 20-25nm, and the V2O5-NC nano-enzyme has catalase-like activity. The wide-interlayer-spacing V2O5-NC nano-enzyme based on C-O bond bridging prepared by the invention has relatively good stability, can be prepared on a large scale, is convenient to store, has good affinity to catalytic chromogenic substrates, has high stability, and has universality for the chromogenic reaction of the catalytic chromogenic substrates (TMB, ABTS, DAB and OPD). The V2O5-NC nano-enzyme disclosed by the invention is used for analyzing five organophosphorus pesticides (parathion-methyl, glyphosate, phoxim, methamidophos and chlorpyrifos), has good pesticide recognition capability and interference resistance, and also has the advantages of wide linear range, low detection limit, simplicity and convenience in operation, low detection cost and the like.

The present invention relates to a method for post-emergent weed control, which comprises applying an effective amount of a composition comprising herbicide A (component A), glyphosate (component B) and optionally herbicide C (component C) to emerged weeds, or an area, where weeds are growing.

The invention provides a method for physically-chemically synergistically and ecologically preventing and controlling xanthium sibiricum, and belongs to the technical field of comprehensive treatment of invasive plants. The method for physically-chemically synergistically and ecologically preventing and controlling xanthium sibiricum comprises the following steps: spraying a glyphosate solution at the seedling stage of xanthium sibiricum, and covering with a black mulching film. According to the method, the control effect on xanthium sibiricum reaches up to 97% or above, the seed bank density is reduced by 93% or above, xanthium sibiricum populations can be rapidly reduced on the basis of low-cost input, the influence on other species is small, protection of biological diversity and maintenance of ecological system stability are facilitated, and the method is suitable for large-scale ecological management.

The invention discloses a preparation method of an aminophilic aminobacter capable of efficiently degrading glyphosate and a microbial inoculum of the aminophilic aminobacter, the aminophilic aminobacter is classified and named as aminophilic aminobacter K2, the aminophilic aminobacter is preserved in the Gansu District Center of the China Industrial Microbiological Culture Collection Center, and the preservation number is GSICC30126. The invention further discloses a preparation method of the aminophilic aminobacter capable of efficiently degrading glyphosate and a microbial inoculum of the aminophilic aminobacter capable of efficiently degrading glyphosate. The Aminobacter sp. Gram-negative bacterium provided by the invention can grow and breed by taking glyphosate as a unique carbon source; the glyphosate can be degraded in a complex matrix environment, can continuously and stably play a role in a complex matrix environment, not only shows high glyphosate degradation efficiency, but also has certain inorganic phosphorus degradation capacity. The strain K2 disclosed by the invention has a wide application prospect in repairing an environment polluted by glyphosate.

The invention relates to the technical field of bio-fertilizers, and particularly discloses a bio-organic fertilizer for preventing and treating root rot of codonopsis pilosula as well as a preparation method and application of the bio-organic fertilizer. The bio-organic fertilizer for preventing and treating root rot of codonopsis pilosula provided by the invention comprises a kitchen fermentation base material and a complex microbial inoculant in a weight ratio of 100: (1-10), the complex microbial inoculant comprises one or more of bacillus atrophaeus, bacillus coagulans, bacillus licheniformis, bacillus velezensis and brevibacillus laterosporus; the invention further provides a preparation method of the bio-organic fertilizer and application of the bio-organic fertilizer in prevention and treatment of root rot of codonopsis pilosula. The bio-organic fertilizer provided by the invention can degrade glyphosate in soil on one hand, and also can reduce the occurrence of root rot of codonopsis pilosula on the other hand, so that the growth of codonopsis pilosula and the accumulation of active value components of codonopsis pilosula can be promoted.

The invention belongs to the technical field of plant breeding, and relates to a transgenic maize event LP112-1 and a detection method thereof. The invention provides a nucleic acid molecule for detecting a transgenic maize event LP112-1, the sequence of the nucleic acid molecule is as shown in SEQ ID NO: 1-2, SEQ ID NO: 3-4, SEQ ID NO: 5 or one or more groups of complementary sequences thereof, the nucleic acid molecule is derived from the transgenic maize event LP112-1, and the sequence of the nucleic acid molecule is as shown in SEQ ID NO: 1-2, SEQ ID NO: 3-4, SEQ ID NO: 5. The corn seed containing the transgenic corn event LP112-1 has been preserved in the China Center for Type Culture Collection (CCTCC) with the preservation number of CCTCC NO: P202432. Maize plants comprising the transgenic maize event LP112-1 of the present invention have the following advantages: free of economic losses due to lepidoptera pests; an agricultural herbicide containing glyphosate can be applied to corn crops; the corn yield is not reduced; and the breeding efficiency is enhanced, and the molecular marker can be used for tracking transgenic insertion fragments in a breeding population and a progeny thereof.

The invention belongs to the technical field of pesticide preparation preparation, and discloses a glyphosate isopropylamine salt aqueous solution preparation device and a preparation method.The glyphosate isopropylamine salt aqueous solution preparation device comprises a shell and a support, a stirring device is fixedly arranged on the inner wall of the shell, a cleaning device is arranged on the surface of the stirring device, a filter plate is arranged below the stirring device, and a plurality of feeding devices are evenly arranged above the shell; a circulating device is fixedly arranged on one side above the shell, and a heat exchanger is arranged on the surface of the shell; the problems that in the prior art, mixing is not uniform, precipitated raw materials cannot be subjected to secondary mixing, so that raw materials are wasted, the raw materials cannot be automatically supplemented according to the mixing frequency and the proportion, and the interior of the device is inconvenient to clean are solved, and the device is suitable for preparing the glyphosate isopropylamine salt aqueous solution.

The invention discloses a method for detecting glyphosate residues in coffee in fluorescence and chemiluminescence dual modes, and belongs to the technical field of chemical analysis and detection.The method comprises the steps that succinic acid serves as a ligand, Ce < 4 + > serves as a central ion, a Suc-Ce complex is synthesized through a microwave method, then the Suc-Ce complex is further subjected to alkali treatment to obtain Suc-Ce-OH nano-enzyme, and the Suc-Ce-OH nano-enzyme is used for detecting glyphosate residues in coffee. The Suc-Ce-OH nano-enzyme has excellent phosphatase-like activity, surface coordinated water molecules can be effectively removed through alkali treatment, more Ce-O active sites are exposed, and the hydrolysis efficiency of the Suc-Ce-OH nano-enzyme on a fluorescent substrate 4-MUP and a chemiluminescent substrate AMPPD is improved by two times; based on the specific inhibition effect of glyphosate on phosphatase-like nano-enzyme activity, a glyphosate fluorescence and chemiluminescence dual-mode detection method is established, the detection limits of the glyphosate fluorescence and chemiluminescence dual-mode detection method are 0.05 mu g / mL and 0.01 mu g / mL respectively, and the glyphosate fluorescence and chemiluminescence dual-mode detection method is used for detecting glyphosate residues in a coffee sample and has the advantages of being high in specificity, easy to operate and sensitive.

The invention discloses a method for detecting glyphosate in coffee through Cu-CDs / ABEI (at) Ag nano-enzyme catalytic chemiluminescence, and belongs to the technical field of chemical analysis and detection.The method comprises the steps that 4-aminoantipyrine serves as a precursor, Cu < 2 + > serves as a doping element, copper-doped carbon dots (Cu-CDs) are synthesized through a microwave method, Cu-CDs and ABEI serve as reducing agents to synthesize the Cu-CDs / ABEI (at) Ag nano-enzyme, and the Cu-CDs / ABEI (at) Ag nano-enzyme is used for detecting glyphosate in coffee through Cu-CDs / ABEI (at) Ag nano-enzyme. The Cu-CDs / ABEI (at) Ag nano-enzyme has excellent peroxidase (POD-like) activity, so that H2O2 decomposition is promoted, and a chemiluminescence signal is enhanced; the glyphosate can interact with the Cu-CDs / ABEI (at) Ag nano-enzyme to inhibit the POD-like activity of the nano-enzyme, so that the chemiluminescence intensity generated by oxidation of ABEI is reduced; on the basis, the method is used for detecting glyphosate in a coffee sample, and has the characteristics of high specificity, simplicity in operation and sensitivity.

The present invention relates to a method for post-emergent weed control, which comprises applying an effective amount of a composition comprising herbicide A (component A), glyphosate (component B) and optionally herbicide C (component C) to emerged weeds, or an area, where weeds are growing.

The present invention discloses an EPSPS enzyme mutant, a nucleic acid molecule, an expression cassette, an expression vector, a recombinant bacterium or a recombinant cell and an application thereof, and relates to the technical field of plant genetic engineering. The EPSPS enzyme mutant provided by the present invention can effectively solve the problem of non-selective damage to crops by herbicides such as glyphosate, and provides a new way to cultivate glyphosate-resistant crop varieties. At the same time, the EPSPS enzyme mutant provided by the present invention also has high practicality and promotion value, can improve the weeding effect in agricultural production, reduce the cost of weeding, and promote the increase of crop yield. In addition, the present invention also provides an expression cassette for expressing the EPSPS enzyme mutant, which contains an EPSPS mutant gene that confers glyphosate resistance to various plants such as soybeans and rice.

The present invention relates to the fields of agriculture, plant biotechnology, and molecular biology. Specifically, the present invention relates to a wheat EPSPS mutant protein and use thereof in improving the tolerance of wheat to glyphosate. The mutant protein comprises an amino acid sequence having the following mutations compared to the EPSPS amino acid sequence of any genome of wild-type wheat: in the amino acid sequence set forth in SEQ ID NO: 2, the amino acid at position 168 is mutated from threonine to isoleucine, the amino acid at position 169 is mutated from alanine to valine, and the amino acid at position 172 is mutated from proline to serine. The mutant protein enables the production of stable glyphosate-resistant wheat, showing important significance for wheat breeding.

The invention belongs to the technical field of biology, and relates to a synthesized gene tandem expression cassette and application thereof. According to the invention, the genes cry1Ab, vip3Aa, gr79-epsps and gat are combined into a gene tandem expression cassette form and are integrated into a corn material, so that compared with a single-gene insect-resistant or herbicide-resistant gene adopted in the prior art, the resistance of transgenic corn to lepidoptera pests is remarkably improved, the tolerance to glyphosate also reaches a high resistance level, and the application prospect is wide. Especially, the insect-resistant genes have a synergistic effect, and the effect of quickly killing insects is achieved.

The invention discloses a method for detecting glyphosate by using a copper monatomic coordination amino covalent organic framework nano-enzyme, the copper monatomic coordination amino covalent organic framework nano-enzyme adopted in the method comprises an amino covalent organic framework, and Cu < 2 + > ions are distributed on a cavity and the surface of the amino covalent organic framework. The nano-enzyme adopted in the invention has the advantages of excellent peroxidase-like activity, high crystallinity, strong chemical stability and the like, can realize specific detection of glyphosate, has the advantages of simple process, convenience in operation, low cost, wide detection range, high detection sensitivity, high detection precision and the like, has the glyphosate detection concentration of 2-100 [mu] mol / L, and has a good application prospect. The detection limit is 0.193 mu mol / L, the method can be widely used for detecting glyphosate in the environment (such as soil or water), the concentration of glyphosate can be rapidly and accurately obtained, the use value is high, and the application prospect is good.

The invention provides an agrobacterium tumefaciens-mediated genetic transformation method for oil palm, which comprises the following steps of: screening and using agrobacterium tumefaciens liquid concentration, dip dyeing time, co-culture time, acetosyringone concentration and antibiotic concentration which are most suitable for genetic transformation of the oil palm in a transformation process in an agrobacterium tumefaciens-mediated manner by taking an oil palm embryonic callus as an explant; an expression cassette containing the EPSPS mutant gene is used as a screening marker, and glyphosate is used as a screening agent for screening, so that the glyphosate-resistant callus is successfully obtained. The screening efficiency of the method exceeds that of a traditional hpt / hygromycin screening system. Meanwhile, the effectiveness of the EPSPS / glyphosate screening system in genetic transformation of the oil palm is also proved, the EPSPS / glyphosate screening system is marked to be applied to genetic transformation of the oil palm for the first time, and a valuable tool is provided for promoting research of an important economic crop.

The present application belongs to the field of pesticides, and particularly relates to a herbicidal composition containing a fused ring substituted aromatic compound and application thereof. The composition comprises a herbicidally effective amount of active ingredient A and active ingredient B, wherein the active ingredient A is or a salt / ester thereof; the active ingredient B is selected from one or more of the following compounds and salts / esters thereof: glyphosate, glufosinate-ammonium, glufosinate-P, paraquat, diquat, ACCase inhibitors, PPO inhibitors, etc. The composition can effectively control / eliminate grass weeds and broadleaf weeds, etc., and has the characteristics of expanding the herbicidal spectrum, reducing the application amount, being able to produce a synergistic effect and solving the problem of resistant weeds, etc.

The invention discloses a weeding composition. The weeding composition comprises glyphosate or a derivative thereof, phosphate and a surfactant component. The phosphate ester is present in an amount of from about 1 to about 15% by weight of the active ingredient based on the total weight of the composition. The surfactant component comprises at least one of a first surfactant, a second surfactant and a third surfactant. Each of the first, second and third surfactants is independently present in an amount of from about 1 to about 15% by weight of the active ingredient based on the total weight of the composition if used.

A herbicidal composition comprises an aqueous solution of a plurality of salts of glyphosate wherein said glyphosate is in anionic form accompanied by low molecular weight non-amphiphilic cations, wherein a major amount but less than 100% of the low molecular weight non-amphiphilic cations are potassium cations, and wherein the composition has a measured pH of at least about 4.8.

The invention relates to the technical field of pesticides, and discloses a glyphosate potassium salt crystal form and a preparation method thereof.The X-ray diffraction pattern of the glyphosate potassium salt crystal form comprises at least one characteristic peak in 2theta of 10.213 + / -0.2 degrees, 20.225 + / -0.2 degrees, 20.867 + / -0.2 degrees, 22.861 + / -0.2 degrees and 23.802 + / -0.2 degrees, the weed withering rate peak value of the glyphosate potassium salt 28 days after pesticide application reaches 98.48%, the weeding performance is excellent, and the glyphosate potassium salt can be applied to the field of pesticides. The crystal form has good stability, the mass change is below 0.5% after the crystal form is stored for 10 days under the conditions of humidity of 65% and room temperature, the crystal form has no obvious hygroscopicity and no obvious change, meanwhile, the crystal form has excellent performance in a long-term stability test, and the crystal form structure does not change after long-term storage.

The invention provides a continuous hydrolysis and acid de-alcoholization process of glyphosate. A glyphosate mixed acid liquid storage tank is connected to an acid de-alcoholization reactor. The acid de-alcoholization reactor is provided with a first reaction functional section, a second reaction functional section, a third reaction functional section, and a fourth reaction functional section from top to bottom. The first reaction functional section is a packing section. Other adjacent reaction functional sections are separated by an overflow plate. The overflow plate can realize the movement of liquid phase from top to bottom. The upper layer of the liquid surface of the fourth reaction functional section is connected to the upper end of the third reaction functional section through a gas phase pipeline; the upper layer of the liquid surface of the third reaction functional section is connected to the upper end of the second reaction functional section through a gas phase pipeline. In each functional section, the gas phase of each level flows from bottom to top to the upper section by pressure difference, and the gas-liquid contact at a certain height is maintained in the upper section for mass transfer and heat transfer. The gas-liquid mass transfer and heat transfer are enhanced by steam stripping and aeration, and the gas stripping effect is played to quickly remove materials such as formaldehyde, methylal, and methyl chloride in the material.

The invention relates to the technical field of pesticides, and discloses a crystal form of ammonium glyphosate and a preparation method thereof, an X-ray diffraction pattern of the crystal form of ammonium glyphosate comprises at least one characteristic peak in 2theta of 10.196 + / -0.2 degrees, 18.339 + / -0.2 degrees, 20.207 + / -0.2 degrees, 20.857 + / -0.2 degrees, 22.483 + / -0.2 degrees, 22.845 + / -0.2 degrees, 23.416 + / -0.2 degrees, 24.868 + / -0.2 degrees, 26.811 + / -0.2 degrees, 28.878 + / -0.2 degrees or 34.057 + / -0.2 degrees, and the crystal form of ammonium glyphosate is tested to have the characteristic peak of 2theta of 10.196 + / -0.2 degrees, 18.339 + / -0.2 the crystal is regular and high in stability, the control effect reaches 96.79% after the herbicide is applied for 14 days, the control effect reaches 99.05% after the herbicide is applied for 28 days, and the weeding performance is excellent.

The utility model discloses a chloromethane condensate recovery device, and relates to the technical field of chloromethane recovery, the chloromethane condensate recovery device comprises a condensation cavity, the condensation cavity is detachably arranged at the open end of a reaction kettle, a condensation assembly is arranged in the condensation cavity, and the condensation assembly comprises a conical hopper, a rotating shaft and a cooling ring, a heat insulation ring is arranged at the edge of the bottom of the condensation cavity, a conical hopper is arranged at the top of the heat insulation ring, a rotating cylinder is rotationally connected to the top of the condensation cavity, the rotating shaft penetrates through the rotating cylinder, and a plurality of fan blades are arranged on the side face of the rotating shaft in the circumferential direction and located at the upper end of the interior of the conical hopper. According to the utility model, the condensation cavity for condensing waste gas and the reaction kettle for preparing glyphosate are integrated into one cavity, so that the occupied space is reduced, the waste gas automatically moves towards the condensation cavity in the reaction kettle, and the moving speed of the waste gas between the thermal insulation ring and the condensation cavity is increased through the rotation of the fan blades, so that the condensation efficiency of the waste gas is improved.