Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing pure nitric oxide gas

A technology of nitric oxide and dinitrogen tetroxide, which is applied in the direction of nitric oxide, nitrogen oxides/oxyacids, etc., can solve the problem of high separation cost, achieve high efficiency, high cost, and prevent safety accidents

Active Publication Date: 2014-07-02
ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing industrial production of NO gas mainly comes from the intermediate product of nitric acid production, namely: 4NH 3 +5O 2 →4NO+6H 2 O+Q, but this reaction requires high temperature and high pressure, and there is N 2 with N 2 O, NO 2 And other by-products are produced, and the separation cost is very high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing pure nitric oxide gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A device for producing pure nitric oxide gas, comprising a tubular reactor a 1, followed by intermediate separator a 2, water cooler a 3, tubular reactor b 4, intermediate separator b 5, water cooling Device b 6, tubular reactor c 7, terminal separator 8 and water cooler c 9; the top outlet of intermediate separator a 2, intermediate separator b 5 and terminal separator 8 is connected and then connected to NO2 absorption tower 10 and NO The compressor 12 is filled, and the bottom of the NO2 absorption tower 10 is connected to the absorption tower circulation pump 11 .

[0028] The process of using this device is as follows:

[0029] ① mix crude dinitrogen tetroxide (mass fraction 92-96%) with dilute nitric acid (mass fraction 10%-18%) and enter tubular reactor a1;

[0030] ② In the tubular reactor a1, dinitrogen tetroxide reacts with water in dilute nitric acid to obtain nitric acid and nitric oxide. The equation is as follows:

[0031] 1.5N2O4+H2O=2HNO3+NO-Q

[0032...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for producing a pure NO gas. The pure NO gas can be directly sold and used as finished product. The equipment cost of the method is low, and the efficiency of the method is high. One raw material used in the method is diluted nitric acid which is waste acid from a nitric acid device. The diluted nitric acid at the concentration is expensive to recycle and may cause environment pollution when discharged out. The method disclosed by the invention can change this waste into a valuable material and is in accordance with national energy-conservation and emission-reduction policy.

Description

technical field [0001] The invention relates to a chemical production method and equipment. Background technique [0002] NO, the full name of carbon monoxide, is colorless, poisonous, and non-flammable at room temperature, with a molecular weight of 30.01, a melting point of -163.6°C, and a boiling point of -151°C. Once in contact with oxygen in the atmosphere, it will be oxidized to NO 2 (brown gas), NO 2 It is highly toxic. [0003] NO needs to be stored in a cool, ventilated warehouse, away from fire and heat sources. Storage temperature should not exceed 30°C. It should be stored separately from flammable (combustible) materials, halogens, and food chemicals, and should not be stored together. The storage area should be equipped with leakage emergency treatment equipment. [0004] The existing industrial production of NO gas mainly comes from the intermediate product of nitric acid production, namely: 4NH 3 +5O 2 →4NO+6H 2 O+Q, but this reaction requires high te...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/24
Inventor 陈林周皓
Owner ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH