Negative-pressure automatic feeding system and NO preparation system and method

• Main Authors: BAI HONGBIN, XIA SHANLIN, GUO YUSHU, LIU YUHAN, YU FENG, LI ZIKUAN, REN SHAOKE
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a negative-pressure automatic feeding system and an NO preparation system and method, and belongs to the technical field of chemical synthesis. The negative-pressure automatic feeding system comprises a mixing reaction system, a storage system, liquid level monitoring systems and a vacuumizing system, the mixing reaction system comprises a reaction kettle, the storage system comprises a first storage container and a second storage container, and the liquid level monitoring systems comprise a first liquid level monitoring system and a second liquid level monitoring system. And the vacuumizing system is hermetically communicated with the reaction kettle. According to the negative-pressure automatic feeding system provided by the invention, the vacuumizing system vacuumizes the interior of the reaction kettle to negative pressure, negative-pressure automatic feeding of a sodium nitrite solution can be realized by utilizing the liquid level monitoring system, covering feeding of the reactio