阅读说明：本技术 一种多孔粒铵油炸药专用油的制备方法 (Preparation method of special oil for porous granular ammonium nitrate fuel oil explosive ) 是由 渠建忠 吕建国 孟彪 于 2020-05-27 设计创作，主要内容包括：本发明涉及一种多孔粒铵油炸药专用油的制备方法,属于石油化工技术领域。制备方法为：以环烷基原油作为原料,经常压蒸馏装置蒸馏,选用常二线油,馏程控制温度240-360℃,选取组份闪点≥120℃,并使满足40℃粘度为7-10mm/s范围,控制凝点低于-25℃,割出的产品即为多孔粒铵油炸药专用油。本发明的多孔粒铵油炸药专用油闪点高,可有效降低油品在生产和运输过程中发生自燃的可能性,凝点低,可耐零下25℃以上低温,并且吸油率高,成本低。(The invention relates to a preparation method of special oil for porous granular ammonium nitrate fuel oil explosive, belonging to the technical field of petrochemical industry. The preparation method comprises the following steps: naphthenic base crude oil is used as a raw material, a normal pressure distillation device is used for distillation, normal two-line oil is selected, the distillation range is controlled at the temperature of 240-360 ℃, the flash point of the selected components is more than or equal to 120 ℃, the viscosity at 40 ℃ is in the range of 7-10mm/s, the condensation point is controlled to be lower than-25 ℃, and the cut product is the special oil for the porous granular ammonium nitrate fuel oil explosive. The special oil for the porous granular ammonium nitrate fuel oil explosive has high flash point, can effectively reduce the possibility of spontaneous combustion of oil products in the production and transportation processes, has low condensation point, can resist the low temperature of more than 25 ℃ below zero, and has high oil absorption rate and low cost.)

1. A preparation method of special oil for porous granular ammonium nitrate fuel oil explosives is characterized in that naphthenic base crude oil is used as a raw material, distillation is carried out by a normal pressure distillation device, normal two-line oil is selected, the distillation range is controlled at the temperature of 240 ℃ and 360 ℃, the flash point of components is selected to be more than or equal to 120 ℃, the viscosity at 40 ℃ is in the range of 7-10mm/s, the condensation point is controlled to be lower than-25 ℃, and the cut product is the special oil for porous granular ammonium nitrate fuel oil explosives.

2. A porous granular ammonium nitrate fuel oil explosive, which is characterized by comprising porous granular ammonium nitrate and the special porous granular ammonium nitrate fuel oil of claim 1, wherein the weight ratio of the porous granular ammonium nitrate to the special porous granular ammonium nitrate fuel oil is 100: (4.5-5.5).

Technical Field

The invention relates to a preparation method of special oil for porous granular ammonium nitrate fuel oil explosive, belonging to the technical field of petrochemical industry.

Background

The porous ammonium nitrate fuel oil explosive is a novel explosive and is prepared by mixing porous ammonium nitrate and common diesel oil, but the common diesel oil has a low flash point (45-65 ℃), belongs to dangerous chemicals, and has high purchasing cost and strict storage requirements. Especially in winter, the use of low-grade diesel oil (higher management and purchase cost and poorer safety) at outdoor temperature is also considered. Meanwhile, most components of the additives contained in diesel oil in the market have no benefit on the production of the ammonium nitrate fuel oil explosive, and individual components can play a role in inhibiting the explosion process to influence the explosion effect. In addition, the diesel oil has poor safety in the production and transportation of the ammonium nitrate fuel oil explosive. In the outdoor high-temperature burning rock area, spontaneous combustion is easily caused.

Disclosure of Invention

The invention aims to solve the defects of diesel oil used by porous granular ammonium nitrate fuel oil in the prior art, and provides a preparation method of special oil for porous granular ammonium nitrate fuel oil explosives.

Technical scheme

A preparation method of special oil for porous granular ammonium nitrate fuel oil explosives is characterized in that naphthenic base crude oil is used as a raw material, a normal two-line oil is selected for distillation in a normal pressure distillation device, the distillation range is controlled at the temperature of 240-.

A porous granular ammonium nitrate fuel oil explosive comprises porous granular ammonium nitrate and the special oil for the porous granular ammonium nitrate fuel oil explosive, wherein the weight ratio of the porous granular ammonium nitrate to the special oil for the porous granular ammonium nitrate fuel oil explosive is 100 (4.5-5.5).

The preparation method of the porous granular ammonium nitrate fuel oil explosive comprises the following steps: adding the special oil for the porous granular ammonium nitrate fuel oil explosive into porous granular ammonium nitrate and uniformly mixing to obtain the special oil.

The invention has the beneficial effects that: compared with common diesel oil, the special oil for the porous granular ammonium nitrate fuel oil explosive has the following advantages:

(1) the flash point is high: the flash point (opening) temperature is above 120 ℃, so that the possibility of spontaneous combustion of oil products in the production and transportation processes can be effectively reduced, and the safety coefficient is improved;

(2) the oil absorption rate is high: the porous ammonium nitrate granules can be mixed with the special oil more fully, and the blasting quality is improved;

(3) the condensation point is low: the low-temperature fluidity is good, and the low temperature of above-25 ℃ can be resisted;

(4) the material cost is low: the price is equivalent to that of diesel oil, but the price is lower than the average price of diesel oil used in winter and summer, the key addition usage proportion is greatly reduced (the addition proportion of the original diesel oil is higher than 6%, and the addition proportion of the special oil for the porous granular ammonium nitrate fuel oil explosive is below 5.5%), thereby the cost is greatly reduced compared with the original diesel oil.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples, but the scope of the present invention is not limited thereto.