2results about How to "Suppress output" patented technology

The utility model relates to a kind of industrial silicon furnace high-temperature flue gas backflow technology high-efficiency heat utilization device, including waste heat boiler, waste heat boiler is connected with the flue gas outlet of ore-heating furnace by pipeline, for recycling the heat in flue gas;Mixed reaction device, the air inlet of mixed reaction device is connected with the gas outlet of waste heat boiler by pipeline, for mixing and reacting the component in flue gas;Dust collector, the air inlet of dust collector is connected with the gas outlet of waste heat boiler by pipeline, for removing particulate matter in flue gas;Absorption tower, the air inlet of absorption tower is connected with the gas outlet of dust collector by pipeline, for removing sulfur oxide and nitrogen oxide in flue gas;Discharge pipeline, discharge pipeline is connected with the gas outlet of absorption tower, for flue gas after processing is discharged to atmosphere, the utility model is optimized flue gas treatment by adjusting oxygen content and back retention flue gas, effectively inhibit the emission of harmful gas such as nitrogen dioxide, while back retention flue gas utilizes waste heat, improve energy efficiency and reduce energy consumption.

The invention discloses a method and a device for recycling methyl acetate in a p-xylene oxidation process, the recycling method comprises cooling volatilization and potassium acetate acquisition in a first stage, rectification hydrolysis, high-temperature distillation and salt-effect separation in a second stage, a part of p-xylene oxidation byproducts are used for preparing key substances, and the other part of p-xylene oxidation byproducts are used for preparing potassium acetate. And the other part directly participates in the recovery of the target object. After the process is improved, no redundant impurities are generated in the whole process, all intermediate products can be recycled, the recovery efficiency is high, the cost input is low, reaction conditions are easy to achieve, a cation exchange resin catalyst, calcium chloride and other salt solutions are not needed, and potassium acetate generated in the working procedure can participate in catalysis of rectification hydrolysis; the method provided by the invention can also participate in extraction of a salt effect reaction, products among subsequent processes can be directly exchanged and used, most of advantages of three existing recovery methods are reserved, and the processes are further simplified.