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

A kind of method and device thereof for preparing nitrate

A technology of nitrate ester and salt solution, which is applied in the preparation of nitrate ester, organic chemistry, etc., can solve the problems of long preparation cycle, high risk, and low purity, and achieve the effects of shortening processing time, reducing emissions, and obvious separation effect

Active Publication Date: 2019-04-23
JIANGXI SUKEER NEW MATERIAL
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of high risk, low purity, long preparation cycle and large storage requirement in the prior art for the production of nitrate products, the present invention provides a safe and efficient method and device for preparing high-purity nitrates

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
  • A kind of method and device thereof for preparing nitrate
  • A kind of method and device thereof for preparing nitrate
  • A kind of method and device thereof for preparing nitrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] A method for preparing isooctyl nitrate, the method may further comprise the steps:

[0113] (1) Preparation of the initial product of isooctyl nitrate: reacting isooctyl alcohol with nitric acid and sulfuric acid in a microchannel reactor to obtain the crude product, the crude product is separated by a T-type separation device, wherein the crude product is separated in the horizontal separation tube of the T-type separator The flow velocity in is 0.5m / s, obtains isooctyl nitrate initial product; Wherein, the mol ratio of sulfuric acid and nitric acid is 2:1, and the mol ratio of nitric acid and isooctyl alcohol is 1.3:1.

[0114] (2) First-level treatment: the initial product of isooctyl nitrate is processed through a first-level membrane, and the first-level membrane is a polyimide membrane to obtain the first-level isooctyl nitrate.

[0115] Adopt the titration method to measure the acidity in the first grade isooctyl nitrate to be 21mg / kg.

Embodiment 2

[0117] Repeat embodiment 1, just add sodium chloride solution in the first grade isooctyl nitrate, stir, obtain the second grade isooctyl nitrate. Wherein, the concentration of sodium chloride solution is 2mol / L, and the molar ratio of salt solution and first-stage nitrate is 2:1.

[0118] Adopt the titration method to measure the acidity in the first grade isooctyl nitrate to be 4.8mg / kg.

Embodiment 3

[0120] Repeat embodiment 2, just second-stage nitrate initial product is processed by second-stage membrane, obtains isooctyl nitrate. Among them, the second-stage membrane is a polytetrafluoroethylene membrane.

[0121] Adopt the titration method to measure the acidity in the first grade isooctyl nitrate to be 0.9mg / kg.

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
flash pointaaaaaaaaaa
flash pointaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing nitric acid ester. The method comprises the following steps: 1) preparation of a nitric acid ester primary product: alcohol, nitric acid and sulfuric acid are reacted in a reactor, the product is separated through a separator to obtain the nitric acid ester primary product; and 2) first-stage processing: the nitric acid ester primary product is subjected to first-stage membrane processing to obtain the first-stage nitric acid ester. The method and the apparatus for preparing the nitric acid ester have the advantages of safety and high efficiency.

Description

technical field [0001] The invention designs a method and a device for producing nitrates, and in particular relates to a method and a device for safely producing high-purity nitrates. Background technique [0002] Nitrate compounds are mostly dangerous goods. The country has strict requirements on the production, transportation and use of nitrate compounds. There have been many safety accidents in the production of nitrate compounds at home and abroad. [0003] Propyl nitrate is flammable and has strong oxidizing properties. In case of open fire or high heat, it will cause combustion and explosion. The flash point is 20°C, the upper limit of explosion is 100.0% (V / V), and the lower limit of explosion is 2.0% (V / V). A flammable liquid with a low flash point, high volatility, easy to catch fire, and poor safety. Those with a flash point below 45°C are flammable. [0004] In the preparation of isooctyl nitrate, the raw materials are alcohol and mixed acid, and the mixed ac...

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): C07C201/02C07C203/04
CPCC07C201/02C07C203/04
Inventor 廖维林陈飞彪
Owner JIANGXI SUKEER NEW MATERIAL