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

Continuous production technology for isooctyl nitrate

A technology of isooctyl nitrate and production process, which is applied in the preparation of nitrate, chemical methods for reacting liquid with liquid, organic chemistry, etc., can solve problems such as hidden safety hazards, low production efficiency, etc., and achieves high production efficiency and production cost. Low, eliminates the effect of overheating explosion hazard

Active Publication Date: 2012-10-03
西安万德能源化学股份有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of continuous production process of isooctyl nitrate, to overcome the bigger potential safety hazard and the lower problem of production efficiency existing in the prior art

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
  • Continuous production technology for isooctyl nitrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: (1) The mass ratio of mixing acid is prepared in the acid mixer by metering pump: industrial fuming nitric acid 30%, concentrated sulfuric acid 70%. The mixed acid and industrial iso-octanol are poured into the microtubular reactor continuously. The equivalent diameter of the reactor is 10 microns, the residence time of the material in the reactor is 500 milliseconds, the temperature of the reactor is controlled at 60 ° C, and the pressure of the reactor is controlled at 0.5 MPa. The volume flow ratio of mixed acid and alcohol is 1:1. (2) The product continuously flows into the alkyd separation tank from the outlet of the reactor, and enters the crude product tank after removing the acid layer. (3) The crude product and lye are continuously injected into the ester inlet and the alkali inlet of the alkali scrubber. After neutralization and alkali washing, the product continuously flows into the ester-alkali separation tank from the outlet of the reactor, a...

Embodiment 2

[0020] Embodiment 2: (1) The mass ratio of mixing acid is prepared in the acid mixer by metering pump: industrial fuming nitric acid 40%, concentrated sulfuric acid 60%. The mixed acid and industrial iso-octanol are poured into the microtubular reactor continuously. The equivalent diameter of the reactor is 0.1 cm. The residence time of the material in the reactor is 800 milliseconds. The volume flow ratio with alcohol is 1.5:1. (2) The product continuously flows into the alkyd separation tank from the outlet of the reactor, and enters the crude product tank after removing the acid layer. (3) The crude product and lye are continuously injected into the ester inlet and the alkali inlet of the alkali scrubber. After neutralization and alkali washing, the product continuously flows into the ester-alkali separation tank from the outlet of the reactor, and enters the alkali washing product tank after removing the alkali layer. The temperature of the neutralization alkali washing ...

Embodiment 3

[0021] Embodiment 3: (1) The mass ratio of mixing acid is prepared in the acid mixer by metering pump: industrial fuming nitric acid 25%, concentrated sulfuric acid 75%. The mixed acid and industrial iso-octanol are poured into the microtubular reactor continuously. The equivalent diameter of the reactor is 1 cm. The residence time of the material in the reactor is 900 milliseconds. The volume flow ratio with alcohol is 2:1. (2) The product continuously flows into the alkyd separation tank from the outlet of the reactor, and enters the crude product tank after removing the acid layer. (3) The crude product and lye are continuously injected into the ester inlet and the alkali inlet of the alkali scrubber. After neutralization and alkali washing, the product continuously flows into the ester-alkali separation tank from the outlet of the reactor, and enters the alkali washing product tank after removing the alkali layer. The temperature of the neutralization alkali washing reac...

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

No PUM Login to View More

Abstract

The invention relates to the technical field of production technology for petrochemical industry product nitrate esters, in particular to a continuous production technology for isooctyl nitrate. The invention aims to solve the problems of high potential safety hazard and low production efficiency in the prior art. The continuous production technology for isooctyl nitrate comprises the following steps: (1) mixed acid, which is mixed by industrial fuming nitric acid and concentrated sulfuric acid, and alcohol are sent into a microtubule reactor to carry out the reaction; (2) the product continuously flows into an alcohol-acid separating tank from the outlet of the microtubule reactor, and then enters a crude product tank after the acid layer is removed; and (3) the crude product is washed with water, washed with alkali and washed with water to be neutral, and a trace amount of water is removed through a drying unit to obtain the final product. Compared with the prior art, the invention has the advantages of low operation energy consumption, high safety and reliability, high production efficiency, simple integral technological system and low production cost.

Description

Technical field: [0001] The invention relates to the technical field of production technology of petrochemical product nitrate, in particular to a continuous production technology of isooctyl nitrate. Background technique: [0002] Isooctyl nitrate is an excellent cetane number improver for diesel oil. In industry, the method of nitration of isooctyl alcohol is generally used for production. The method uses concentrated sulfuric acid as a catalyst, and directly nitrates nitric acid and isooctyl alcohol in a reactor to obtain isooctyl nitrate as a product and water as a by-product. This reaction is a typical strong exothermic fast heterogeneous reaction. The reaction process has the following characteristics: first, the reaction speed is fast, and when the temperature is higher than 35°C, the reaction is almost instantaneously completed; second, the heat release is large, and the research shows that The total thermal effect of this reaction is as high as 700kJ / kg alcohol; t...

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): C07C203/04C07C201/02B01J14/00
Inventor 曹彬王育斌金星杨战厂
Owner 西安万德能源化学股份有限公司