Dimethyl sulfoxide industrial waste liquid regeneration treatment process for producing DIANP explosives

A dimethyl sulfoxide, industrial waste liquid technology, applied in filtration treatment, natural water treatment, water/sewage treatment and other directions, can solve problems such as decomposition and safety hazards, achieve control of discharge, reduce environmental pollution, and reduce production cost effect

Active Publication Date: 2020-11-10
XIAN MODERN CHEM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nitrate explosives will also decompose if the

Method used

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  • Dimethyl sulfoxide industrial waste liquid regeneration treatment process for producing DIANP explosives
  • Dimethyl sulfoxide industrial waste liquid regeneration treatment process for producing DIANP explosives
  • Dimethyl sulfoxide industrial waste liquid regeneration treatment process for producing DIANP explosives

Examples

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Embodiment 1

[0036] This embodiment provides a kind of dimethyl sulfoxide industrial waste liquid regeneration treatment process for producing DIANP explosives, which specifically includes the following steps:

[0037] Step 1, vacuum distillation: add 300mL of dimethyl sulfoxide industrial waste liquid containing DIANP explosives into a 500mL vacuum distillation bottle, and gradually raise the temperature under the condition that the vacuum degree is not lower than 0.084MPa, and the temperature of the solution reaches a maximum of 90°C , when the temperature of the distillation head is 50-55 ℃, there is water distilled out, and when the water output is not less than 70% of the total water, the heating can be stopped and the distillation can be stopped;

[0038] Step 2, desalination: cooling and crystallizing the waste liquid obtained after step 1 distillation, the cooling end point reaches a minimum of 30°C, vacuum filtration, and collecting the filtrate;

[0039] Step 3, water removal: Di...

Embodiment 2

[0046] Same as Example 1, the difference is that the mass ratio of sodium azide to N-nitro-diethanolamine dinitrate in step 5 in this example is 0.56:1, in step 6, keep warm for 7 hours, and finally obtain DIANP 26.2 g. The yield is 81.9%, and the purity is 92.0%.

Embodiment 3

[0048] Same as Example 1, the difference is that the mass ratio of sodium azide and N-nitro-diethanolamine dinitrate in step 5 in this example is 0.65:1, in step 6, keep warm for 9h, and finally obtain DIANP 27.8g. Yield 86.9%, purity 99.0%.

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Abstract

The invention discloses a dimethyl sulfoxide industrial waste liquid regeneration treatment process for producing DIANP explosives, which comprises the following steps: pretreating dimethyl sulfoxideindustrial waste liquid containing DIANP explosives to obtain mother liquor, and sequentially adding N-nitrodiethanolamine dinitrate and sodium azide into the mother liquor to obtain regenerated mother liquor; extracting the regenerated mother liquor to obtain DIANP and extract liquor, wherein a water phase in the extract liquor is recycled as dimethyl sulfoxide industrial waste liquor containingDIANP explosives. According to the method, the dimethyl sulfoxide waste liquid generated in the DIANP preparation process is reasonably utilized, so that the regenerated mother liquid can meet the technical requirements of a reaction system, and is successfully applied to the cyclic utilization in theazidation reaction of the N-nitrodiethanolamine dinitrate; therefore, the discharge of industrialwaste liquid is effectively controlled, the environmental pollution is reduced, the yield of DIANP is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to a regeneration treatment process of dimethyl sulfoxide industrial waste liquid for producing DIANP explosives. Background technique [0002] DIANP explosive, chemical name 1,5-diazido-3-nitroazapentane, DIANP not only has excellent plasticizing properties, but also has high energy, high burning rate, low burning temperature, small molecular weight of gas, Large gas production and other advantages. Due to its low freezing point, low sensitivity, low volatility, and good thermal stability, it is used in high-energy and low-ablation propellants. The explosion temperature is 200-400K lower than that of propellants of the same energy level, and the propellant power can reach 1300J / g, which is comparable to that of propellants of the same energy level. When used in conjunction with RDX, its propellant power exceeds 1400J / g and at the same time obtains a higher burning ra...

Claims

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Application Information

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IPC IPC(8): C07C247/04C02F9/10C02F103/36
CPCC07C247/04C02F9/00C02F1/04C02F1/001C02F1/283C02F1/281C02F2103/36
Inventor 陈冬弥育华李宗英邓明哲张卫华张志刚熊彬
Owner XIAN MODERN CHEM RES INST
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