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Composite type diesel fuel cetane number improver and production process thereof

A technology for cetane number and production process, applied in the field of compound diesel cetane number improver and its production process, can solve the problems of hidden danger of production process safety, poor addition and use effect, low production efficiency, etc. High temperature explosion hazard, good addition effect and high production efficiency

Inactive Publication Date: 2014-07-09
PUCHENG RUIYING NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low safety factor, poor effect of adding and using existing products, large potential safety hazards and low production efficiency in the production process, the present invention provides a composite diesel cetane number improver and its production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of production technology of composite diesel oil cetane number improver, comprises the following steps:

[0031] Step 1, mixing isooctyl alcohol and cyclohexanol (or n-butanol) in a molar ratio of 3:1 to form a mixed alcohol;

[0032] Step 2, nitric acid, concentrated sulfuric acid and the mixed alcohol obtained in step 1 are simultaneously injected into the microchannel reactor through a metering pump in a certain proportion, the molar ratio of the nitric acid and the mixed alcohol is a ratio of 1: 1, and the nitric acid and the concentrated alcohol are The mass ratio of sulfuric acid is 1:3; the reaction temperature is 10° C., the time for the mixed reactants to flow on the reaction module in the microchannel reactor is 40 seconds, and the reaction pressure is 0.5 MPa. Described nitric acid is preferably fuming nitric acid.

[0033] Step 3, the reaction product of the step 2 flows into the ester-acid separation tank through the outlet of the microchannel react...

Embodiment 2

[0037] A kind of production technology of composite diesel oil cetane number improver, comprises the following steps:

[0038] Step 1, mixing isooctyl alcohol and cyclohexanol (or n-butanol) in a molar ratio of 2:3 to form a mixed alcohol;

[0039] Step 2, nitric acid, concentrated sulfuric acid and the mixed alcohol obtained in step 1 are simultaneously injected into the microchannel reactor through a metering pump in a certain proportion, the molar ratio of the nitric acid and the mixed alcohol is a ratio of 1: 1, and the nitric acid and the concentrated alcohol are The mass ratio of sulfuric acid is 1:3; the reaction temperature is 0° C., the time for the mixed reactants to flow on the reaction module in the microchannel reactor is 50 seconds, and the reaction pressure is not more than 1 MPa. Described nitric acid is preferably fuming nitric acid.

[0040] Step 3, the reaction product of the step 2 flows into the ester-acid separation tank through the outlet of the microch...

Embodiment 3

[0044] A kind of production technology of composite type diesel oil cetane number improver, comprises the following steps:

[0045] Step 1, mixing isooctyl alcohol and cyclohexanol (or n-butanol) with a molar ratio of 1:1 to form a mixed alcohol;

[0046]Step 2, nitric acid, concentrated sulfuric acid and the mixed alcohol obtained in step 1 are simultaneously injected into the microchannel reactor through a metering pump in a certain proportion, the molar ratio of the nitric acid and the mixed alcohol is a ratio of 1: 1, and the nitric acid and the concentrated alcohol are The mass ratio of sulfuric acid is 1:2; the reaction temperature is -5°C, the time for the mixed reactants to flow on the reaction module in the microchannel reactor is 50 seconds, and the reaction pressure is 0.5MPa. Described nitric acid is preferably fuming nitric acid.

[0047] Step 3, the reaction product of the step 2 flows into the ester-acid separation tank through the outlet of the microchannel re...

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Abstract

The invention discloses a composite type diesel fuel cetane number improver and a production process thereof. The production process successively includes the following steps: (1) mixing isooctanol and cyclohexanol (or n-butanol) in proportion to prepare a mixed alcohol; (2) respectively sending fuming nitric acid, concentrated sulfuric acid and the mixed alcohol simultaneously into a micro channel reactor by metering pumps in proportion, and carrying out a reaction; (3) allowing the product to flow into an ester acid separation tank through an outlet of the micro channel reactor, and after removing an acid layer, allowing to go into a crude product tank; and (4) refining the crude product to obtain the target product. The composite type diesel fuel cetane number improver and the production process thereof have the advantages that: (1) the safety coefficient of the product is high, and the explosion sensitivity of the product is lower than any one of single-improvers; (2) the adding effect of the product is good; (3) the micro channel reactor has the advantages of compact structure, easy operation, low energy consumption, safety, reliability and high production efficiency; (4) the whole process device is small in size and low in investment cost; and (5) the target product has no need of compounding, and thus the procedures are reduced.

Description

technical field [0001] The invention relates to a petrochemical product nitrate ester and a production process thereof, in particular to a compound diesel cetane number improver and a production process thereof. Background technique [0002] The cetane number of diesel oil represents the combustibility and antiknock performance of diesel oil, and is an important index for evaluating the quality of diesel oil. Adding diesel cetane is considered to be an economical and effective method. The cetane number improvers used in industry are generally alkyl nitrates, and they are generally a single compound produced batchwise by reactors. This type of reaction is a typical strong exothermic fast heterogeneous reaction, and 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 generation is large, and the research shows that the The ...

Claims

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Application Information

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IPC IPC(8): C10L1/23C10L10/12C07C203/04C07C201/02
Inventor 高剑峰
Owner PUCHENG RUIYING NEW MATERIAL TECH
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