Composite additive for preventing diesel anti-wear agent from generating spontaneous combustion

A technology of compound additives and anti-wear agent, applied in the field of unsaturated fatty acid or ester self-ignition flame retardant, can solve the problems of self-ignition, harmful to the engine or the environment, unworkable, etc., and achieves low material cost, increased heating starting temperature, and high heat generation. Effect of starting temperature increase

Active Publication Date: 2016-01-20
SHENZHEN GCD PETROLEUM ADDITIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain defects in the flame retardant method: 1) flame retardants usually contain metals, halogens, and phosphorus compounds, which are harmful to engines or the environment; 2) the oxidation reaction process is an exothermic reaction, and if the reaction heat produced cannot be timely Removed, it will still spontaneously ignite due to the rapid rise of the temperature of the fatty acid or ester
A common solution is to ventilate and dissipate heat, but anti-wear agents are usually sealed and preserved, this method obviously does not work

Method used

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  • Composite additive for preventing diesel anti-wear agent from generating spontaneous combustion
  • Composite additive for preventing diesel anti-wear agent from generating spontaneous combustion
  • Composite additive for preventing diesel anti-wear agent from generating spontaneous combustion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Sample Preparation:

[0021] Weigh the antioxidant, heat conducting agent, dispersant and diluent respectively, and mix thoroughly to obtain the composite inhibitor of the present invention. Select a commercially available acid-type or ester-type anti-wear agent, add the prepared composite inhibitor in proportion, and mix thoroughly, which is the sample of this embodiment.

[0022] Evaluation method:

[0023] 1) TG‐TDA (Thermogravimetric Differential Thermal Analysis) is used to measure the onset temperature of heat generation during heating. The higher the temperature, the higher the rate of spontaneous combustion resistance. Test conditions: ①sample amount: 10mg; ②heating rate: 2°C / min; ③air flow: 150mL / min.

[0024] 2) SIT (Spontaneous Ignition Test) is used to measure the time from heat generation to spontaneous combustion. The longer the time, the higher the rate of spontaneous combustion resistance. Test conditions: ①sample amount: 30mg; ②temperature: 60℃; ③env...

Embodiment 2

[0030] Sample preparation and evaluation methods are the same as in Example 1.

[0031] Table 2 Effects of different component contents on the effect of spontaneous combustion retardation

[0032]

[0033] Note: 1) Dosage increased by 1%; 2) The anti-wear agent used in the test was a commercially available acid-type anti-wear agent (containing 80-90% tall oil fatty acid)

[0034] According to the data in the table, combined with cost considerations, the optimal component mass ratio of the spontaneous combustion retardant is antioxidant 1076: nano-graphite powder: Span-80: mixed tetramethylbenzene = 35:5:1:59.

Embodiment 3

[0036] Sample preparation and evaluation methods are the same as in Example 1.

[0037] Table 3 The influence of different test objects and doses on the effect of spontaneous combustion retardation

[0038]

[0039]

[0040] Note: Inhibitor components and content are

[0041]

[0042] From the data in the table, it can be seen that the self-flammability retardant of the present invention is effective for both acid type and ester type antiwear agents. Considering comprehensively, the optimal addition amount is 1‐2%. It has been verified that adding the anti-wear agent added with the self-ignition retardant of the present invention to diesel oil has no adverse effect on the physical and chemical indicators of the diesel oil, such as the anti-wear property, cetane number, and actual colloid.

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Abstract

The invention belongs to the technical field of unsaturated fatty acid or ester spontaneous combustion retardants, and particularly relates to a composite additive for preventing a diesel anti-wear agent from generating spontaneous combustion in storage, transportation and filling links. The composite additive is prepared from antioxidants, heat conducting agents, dispersing agents and diluents through compounding. The spontaneous combustion prevention effect is achieved through the measures of effectively inhibiting the unsaturated fatty acid or ester from oxidizing, promoting the heat radiation and the like. The additive provided by the invention has the advantages that the mixing amount in the anti-wear agent is low; the recommended mixing amount is 1 to 2 percent; substances such as metal, halogen and phosphorus, harmful to an engine or the environment are not contained; the additive belongs to a green and environment-friendly product.

Description

technical field [0001] The invention belongs to the unsaturated fatty acid or ester spontaneous combustion retardant technology, specifically a composite additive for preventing diesel antiwear agents from spontaneous combustion during storage, transportation and filling, which can effectively reduce the safety risk in the production process of the petroleum and petrochemical industry. technical background [0002] Diesel antiwear agents are divided into two types: acid type and ester type. The acid type antiwear agent is usually obtained by compounding tall oil fatty acid and other auxiliary agents, while the ester type antiwear agent is composed of tall oil fatty acid and polyol ester. Both of them use tall oil fatty acid as the main raw material. Tall oil fatty acid is usually extracted from plants, mainly contains monounsaturated oleic acid, and also contains a large amount of polyunsaturated linoleic acid and linolenic acid. It is a great potential safety hazard and br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/183C10L1/19C10L1/12C10L1/188
Inventor 严斌魏宏杰熊靓
Owner SHENZHEN GCD PETROLEUM ADDITIVE CO
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