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Method for producing pure nitrogen monoxide gas and liquid dinitrogen trioxide in a joint way

A technology of dinitrogen trioxide and nitric oxide, applied in the direction of dinitrogen trioxide, nitric oxide, nitrogen oxides/oxyacids, etc., can solve problems such as defects, achieve high cost, low equipment cost, and reaction full effect

Active Publication Date: 2012-06-27
ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH
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Problems solved by technology

[0003] Dinitrogen trioxide is the acid anhydride of nitrous acid. Because nitrous acid is unstable, it is generally stored as sodium nitrite. It can be generated by strengthening the acid during use. Nitrous acid is widely used in chemical reactions, such as nitrosation and diazotization reactions. In the process of making nitrous acid from sodium nitrite, water and strong acid need to be added, and sodium ions come out after the reaction, so its application has certain limitations
But its production has flaws

Method used

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  • Method for producing pure nitrogen monoxide gas and liquid dinitrogen trioxide in a joint way
  • Method for producing pure nitrogen monoxide gas and liquid dinitrogen trioxide in a joint way

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Embodiment 1

[0036] A device for a method for combined production of pure nitric oxide gas and liquid nitrous oxide, comprising a tubular reactor a1, followed by an intermediate separator a2, a water cooler a3, and a tubular reactor b4 in sequence , intermediate separator b 5, water cooler b 6, tubular reactor c 7, end separator 8 and water cooler c 9; after the top outlet of intermediate separator a 2, intermediate separator b 5 and end separator 8 is connected There are two branches, one is connected to the NO2 absorption tower 10 and the NO filling compressor 12, the bottom of the NO2 absorption tower 10 is connected to the absorption tower circulating pump 11; the other branch is connected to the water cooler 13, the acid remover 14, the compressor Machine 15, chilled brine cooler 16, ammonia cooler 17, reactor 18. The reactor 18 is a ceramic structured packing tower, the bottom of which is connected to the adjustment tank 19 .

[0037] The process of using this device is as follows: ...

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Abstract

The invention relates to a method and equipment for producing pure nitrogen monoxide gas and liquid dinitrogen trioxide in a joint way. The two products can be simultaneously produced; and the products can be directly sold or used as a finished product; and the method and equipment for producing pure nitrogen monoxide gas and liquid dinitrogen trioxide in a joint way, provided by the invention, have the advantages of low equipment cost and high efficiency.

Description

technical field [0001] The present invention relates to a chemical production method and equipment. Background technique [0002] Nitrous oxide is an acidic oxide, toxic, soluble in benzene, ether, chloroform (trichloromethane), carbon tetrachloride (tetrachloromethane), unstable in acid and alkali, and can be decomposed into one under normal pressure. Nitrogen oxide and nitrogen dioxide. [0003] Nitrous trioxide is the acid anhydride of nitrous acid. Because nitrous acid is unstable, it is generally stored as sodium nitrite. It can be generated by strengthening the acid during use. Nitrous acid is widely used in chemical reactions, such as nitrosation and diazotization. In the process of making sodium nitrite into nitrous acid, it is necessary to add water and strong acid, and sodium ions come out after the reaction, so its application has certain limitations. Using dinitrogen trioxide instead of nitrous acid for nitrosation and diazotization can be carried out in an anh...

Claims

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Application Information

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IPC IPC(8): C01B21/24C01B21/34
Inventor 陈林周皓
Owner ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH
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