2results about How to "Will not introduce" patented technology

The invention belongs to the field of nuclear industry, and discloses a quartz target tube crushing and dissolving method which comprises the following steps: step 1, cleaning a quartz target tube through a cleaning device; step 2, drying the cleaned quartz target tube through a drying device; step 3, crushing the dried quartz target tube through a crushing device, and enabling the crushed quartz target tube and the target material in the quartz target tube to fall into a dissolving device; and 4, dissolving the quartz target tube and the target material falling into the dissolving device through the dissolving device. The quartz target tube is cleaned through the cleaning device, the quartz target tube is dried through the drying device, the quartz target tube is crushed through the crushing device, quartz target tube scraps and target materials are dissolved through the dissolving device, subsequent suction filtration, storage and use are facilitated, and the device has the advantages of being safe, efficient, few in impurities and high in product quality.

This invention discloses a high-purity fluorobenzene recovery process in the production of 1,4-bis(4-fluorobenzoyl)benzene, belonging to the field of organic waste liquid recovery technology. Step 1 involves reacting the fluorobenzene waste liquid through a tubular reactor containing anhydrous aluminum chloride particles to obtain dehydrated fluorobenzene waste liquid. The reaction temperature is 5-40℃, the residence time is 60-200 min, and the flow rate of the fluorobenzene waste liquid is 0.1-0.4 m / min. Step 2 involves filtering the dehydrated fluorobenzene waste liquid through a micron filter, then distilling it in a fluorobenzene distillation column. The organic vapor at the top of the column is compressed by a compressor, heat-exchanged by an MVR heat exchanger, condensed, and then refluxed in a reflux tank. High-purity fluorobenzene is obtained from the fluorobenzene distillation column, wherein the fluorobenzene purity is greater than 99.99 wt% and the water content is less than 10 ppm. This invention uses fluorobenzene waste liquid from the production process of 1,4-bis(4-fluorobenzoyl)benzene as raw material. Through reaction dehydration, crystalline aluminum chloride filtration and distillation, it achieves continuous batch production of high-purity fluorobenzene. The process is simple and has low energy consumption.