Synthetic method of isooctyl nitrate

A technology of isooctyl nitrate and a synthesis method, applied in the synthesis field of isooctyl nitrate, can solve problems such as low product yield, low production efficiency, high safety hazard, etc., and achieves high finished product yield, low production cost, Wide range of effects

Inactive Publication Date: 2014-08-13
CHANGZHOU UNIV
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Problems solved by technology

[0011] The technical problem to be solved in the present invention is: in order to solve the problem that the process for preparing isooctyl nitrate in the prior art has higher hidden dangers of concentrated release of reaction heat, low production efficiency, low product yield, and serious waste of resources, The invention provides a kind of synthetic method of isooctyl nitrate to solve the above problems

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  • Synthetic method of isooctyl nitrate
  • Synthetic method of isooctyl nitrate
  • Synthetic method of isooctyl nitrate

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Embodiment Construction

[0023] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0024] Such as figure 1 Shown, the invention provides a kind of synthetic method of isooctyl nitrate, comprises the following steps:

[0025] a) Prepare a mixed acid solution, mix a concentrated sulfuric acid solution with a mass ratio of 90% and a concentrated nitric acid solution with a mass ratio of 98% to form a mixed acid solution, the molar ratio of sulfuric acid and nitric acid in the mixed acid solution is 2:1, and set aside ;

[0026] b) the mass ratio is 99.5% iso-octanol solution and mixed acid solution are transported into the microchannel reactor from two different inlets respectively as raw material liquid, by regulating the volume flow ratio o...

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Abstract

The invention provides a synthetic method of isooctyl nitrate. The method includes preparing a mixed acid solution and keeping for further use, wherein a concentrated sulfuric acid solution having a mass concentration of 90% and a concentrated nitric acid solution having a mass concentration of 98% are mixed to obtain the mixed acid solution, and the mole ratio of the sulfuric acid to the nitric acid in the mixed acid solution is 1.5-2.5:1. The synthetic method achieves efficient utilization of resources by a waste acid circulating system. The reaction temperature is low and the application zone is wide. The method can be widely used in cities in northern China. In low-temperature reactions, the selectivity of reactants is good and byproducts are less, thus facilitating waste water treatment in the later period and easily meeting the state standard of second level for discharging. The yield of a finished product of the isooctyl nitrate is high, the process system is simple, and the production cost is low, so that the synthetic method is prone to achievement.

Description

technical field [0001] The invention relates to the technical field of isooctyl nitrate production technology, in particular to a synthetic method of isooctyl nitrate. Background technique [0002] Fuel additives can change certain properties of fuel, making it beneficial to improve combustion, so as to achieve the purpose of reducing the emission of harmful substances in the exhaust of internal combustion engines and saving energy, without adding devices or changing the structure of vehicles and internal combustion engines. Fuel energy utilization under load, thereby improving combustion efficiency and reducing pollutant emissions, so it has been widely used in recent years. Isooctyl nitrate, as one of the ignition accelerators widely used at present, is an ashless combustion accelerant, which has the advantages of smoke elimination, combustion support, and no secondary pollution. However, there are many safety problems in its production process, so a new safety The produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C203/04C07C201/02
Inventor 尹芳华杨彦徐冉李晓芳
Owner CHANGZHOU UNIV
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