3 results about "Nitration" patented technology

The invention relates to a synthetic method for bifenazate. The method comprises the following specific synthetic sections: step 1, performing nitration: mixing a 4-hydroxybiphenyl solution and a toluene solution under stirring for a reaction, and adding a HNO3 solution dropwise for a reaction to obtain a nitration reaction solution; step 2, performing methylation: mixing the nitration reaction solution and anhydrous sodium carbonate powder for a reaction, and adding a dimethyl carbonate solution dropwise for a reaction to obtain a methylation reaction solution; step 3, performing hydrogenation: throwing the methylation reaction solution, hydrogen gas, and Raney nickel into a reaction kettle for a reaction to obtain a hydrogenation reaction liquid; step 4, performing hydrazination: performing a primary hydrazination reaction, performing a secondary hydrazination reaction, performing filter pressing, performing a tertiary hydrazination reaction, and performing secondary filter pressingto obtain a condensation reaction liquid; step 5, performing condensation: mixing a third hydrazine compound, an ethyl acetate solution and an isopropyl chloroformate solution for a reaction to obtaina bifenazate mixed liquid; and step 6, performing purification: performing desolvation, performing crystallization, performing centrifugation, performing washing, performing secondary centrifugation,and performing drying to obtain the finished bifenazate. The method provided by the invention has the effect of improving purity of the bifenazate product.

The invention discloses a synchronous denitrification reactor. The synchronous denitrification reactor comprises a first order reaction chamber, a second order reaction chamber, a inlet water mixing chamber, a carbon source adding pipe, a mixing stirring device, a backwash water pipe, and a spherical filling material; the first order reaction chamber and the second order reaction chamber are connected in series; the first order reaction chamber comprises a first water preparation oxygen release chamber and a fist denitrification chamber; the second order reaction chamber comprises a second water preparation oxygen release chamber and a second denitrification chamber; the bottoms of the first denitrification chamber and the second denitrification chamber are designed to be tapered; the bottom of the first denitrification chamber is provided with a hole; the bottom of the second denitrification chamber is provided with a hole; the outside edge of each of the holes is covered with filling material blocking screen; and the spherical filling material is injected into the first denitrification chamber and the second denitrification chamber. According to the synchronous denitrification reactor, synchronous denitrification anoxic conditions are achieved in an aerobic tank or an anoxic pool via insulation, biomembrane loaded with the spherical filling material is used for reaction of nitrates and nitrites in backflow sewage with the added carbon source, and generated nitrogen overflow, so that denitrification is realized.

The invention provides a modification method for energy utilization of sludge or organic waste. The method comprises the steps that the sludge or the organic waste and an oxidation nitration agent or a catalytic oxidation combustion improver are mixed and aged; or the sludge/organic waste, fire coal and the oxidation nitration agent/catalytic oxidation combustion improver are mixed and subjected to powder grinding, oxidation nitration modification/catalytic oxidation combustion improving modification is conducted on the sludge or the organic waste, and accordingly the combustion performance of the sludge/organic waste is improved. The oxidation nitration agent means the matter which can improve the combustion performance of argillation organic matter and high-internal-water cenobium organic matter in the sludge. The catalytic oxidation combustion improver means the matter which can improve the combustion performance of carbon or hydrocarbon. According to the modification method, by improving the combustion performance of the argillation organic matter and the high-internal-water cenobium organic matter in the sludge/organic waste, the combustion performance of the sludge/organic waste is improved, and accordingly the energy utilization of the sludge/organic waste is achieved.