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Purification method for improving hydrolysis resistance of phosphate fire-resistant oil

A technology of hydrolysis resistance and phosphate ester, which is applied in the field of fuel oil resistance, can solve the problems of complex process, high cost, and poor effect, and achieve the effect of simple and convenient operation and improved hydrolysis resistance

Active Publication Date: 2021-10-01
天津市八方源化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method has the problems of high cost, complex process or poor effect.

Method used

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  • Purification method for improving hydrolysis resistance of phosphate fire-resistant oil

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Effect test

Embodiment 1

[0023] A purification method for improving the hydrolysis resistance of phosphate-resistant fuel oil, comprising the following steps:

[0024] Step 1, add phosphoric acid ester crude product 3kg in washing kettle;

[0025] Step 2. Add 2kg of solvent to the washing kettle, the solvent is toluene and cyclohexane, toluene:cyclohexane=1:1;

[0026] Step 3, after stirring and dissolving the crude phosphate ester and solvent, add 2 kg of 3% alkaline water for alkaline washing;

[0027] Step 4: Warm up to 50-55°C, after fully stirring, drive the material into the layered tank through a centrifugal pump to stand still, separate by gravity sedimentation, drain the water layer, and put the precipitated material into the washing tank;

[0028] Step 5, repeat step 3 and step 4 to carry out the second alkali washing;

[0029] Step 6. Add 2kg of deionized water to the material in the washing tank after the precipitation in step 5 for the third washing, and then repeat step 4 for layered p...

Embodiment 2

[0033] A purification method for improving the hydrolysis resistance of phosphate-resistant fuel oil, comprising the following steps:

[0034] Step 1, add phosphoric acid ester crude product 3kg in washing kettle;

[0035] Step 2: Add 1.6kg of solvent into the washing kettle, the solvent is petroleum ether at 60-90°C;

[0036] Step 3, after stirring and dissolving the crude phosphate ester and solvent, add 2 kg of 2% alkaline water for alkaline washing;

[0037] Step 4: Heat up to 40-45°C, and after fully stirring, put the material into the layered tank through a centrifugal pump to stand still, separate by gravity sedimentation, drain the water layer, and put the precipitated material into the washing tank;

[0038] Step 5, repeat step 3 and step 4 to carry out the second alkali washing;

[0039] Step 6. Add 2kg of deionized water to the material in the washing tank after the precipitation in step 5 for the third washing, and then repeat step 4 for layered precipitation;

...

Embodiment 3

[0043] A purification method for improving the hydrolysis resistance of phosphate-resistant fuel oil, comprising the following steps:

[0044] Step 1, add phosphoric acid ester crude product 3kg in washing kettle;

[0045] Step 2, add 2.1kg solvent in the washing tank, the solvent is xylene;

[0046] Step 3, adding 1.8kg of 4% alkaline water after stirring and dissolving the crude phosphate ester and solvent for alkaline washing;

[0047] Step 4: Heat up to 60-65°C, after fully stirring, put the material into the layered tank through the centrifugal pump to rest, separate by gravity sedimentation, drain the water layer, and put the precipitated material into the washing tank;

[0048] Step 5, repeat step 3 and step 4 to carry out the second alkali washing;

[0049] Step 6. Add 1.8 kg of deionized water to the material in the washing tank after the precipitation in step 5 for the third washing, and then repeat step 4 for layered precipitation;

[0050] Step 7, sending the pr...

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Abstract

The invention discloses a purification method for improving hydrolysis resistance of phosphate fire-resistant oil, and belongs to the technical field of fire-resistant oil. The purification method comprises the following steps of: adding crude phosphate and a solvent into a washing kettle; stirring and dissolving the crude phosphate and the solvent, and then adding 1%-5% of alkaline water for alkali washing; heating and fully stirring, pumping the material into a layering tank through a centrifugal pump for standing, carrying out gravity settling separation, and putting the settled material into the washing kettle; carrying out second alkali washing; adding deionized water into the material which is put into the washing kettle after settling, carrying out third washing, and then carrying out layering precipitation; sending the washed settled material into a wiped-film evaporator, and evaporating out the solvent, water and volatile matters; and finally, cooling the phosphate material, and sampling the material for analysis. The method is simple and convenient to operate. The hydrolysis stability HS of the phosphate material prepared by dissolving crude phosphate in an organic solvent and purifying the crude phosphate with 1%-5% alkaline water and deionized water for multiple times is less than or equal to 0.05. The aim of improving the hydrolysis resistance of the phosphate fire-resistant oil is fulfilled.

Description

technical field [0001] The invention belongs to the technical field of fuel oil resistance, and in particular relates to a purification method for improving the hydrolysis resistance of phosphate ester fuel oil resistance. Background technique [0002] Anti-fuel oils are divided into phosphate esters, silicate esters, petroleum base oils, water-glycol emulsions, synthetic hydrocarbons, etc. Among them, the phosphoric acid ester widely used in the steam turbine electro-hydraulic regulating system is the most commonly used, and the phosphoric acid ester is divided into three types according to the structure: aryl phosphoric acid ester, alkyl phosphoric acid ester and aryl-alkyl phosphoric acid ester. Aryl phosphate has good hydrolysis resistance, thermal oxidation stability and flame resistance. In addition to being used in aviation, aerospace and other fields, it is mainly used in power systems as flame-resistant turbine oil and metallurgical industries. Its viscosity, flash ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/12C10M105/74C10N40/08
CPCC07F9/12C10M105/74C10M2223/0415C10N2030/66C10N2030/52C10N2040/08
Inventor 王德波李世良姚彬
Owner 天津市八方源化工有限公司
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