Preparation method of low-carbon mixed gas hydrate explosion inhibitor

A technology of mixed gases and hydrates, applied in chemical instruments and methods, and other chemical processes, can solve the problems of strong greenhouse effect of pure carbon dioxide anti-explosion agents, poor anti-explosion effect, and no public reports of anti-explosion materials. To achieve the effect of abundant raw materials, good explosion suppression effect and low cost

Active Publication Date: 2018-12-18
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Low-carbon inert gas anti-knocking agents can only achieve the purpose of anti-knocking by diluting and reducing oxygen concentration, etc. Water-based anti-knocking agents have a strong fluidity, which leads to poor anti-knocking effects, and pure carbon dioxide anti-knocking agents have a strong greenhouse effect
The decomposition of the low-carbon inert mixed gas hydrate explosion suppressant added with inorganic salt has a strong heat-absorbing and cooling effect, and can release water, low-carbon inert gas and inorganic salts with anti-explosion effect, and can be used as a new type of anti-explosion material , but so far there is no public report on the explosion-proof material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In the specific implementation of the present invention, a preparation method of a low-carbon mixed gas hydrate explosion suppressing agent comprises the following steps:

[0020] (1) Preparation of hydration agent:

[0021] adding the inorganic salt silicon dioxide into the water so that the mass content of the silicon dioxide is 0.05mol / L;

[0022] (2) Preparation of inert mixed gas:

[0023] The inert mixed gas is composed of a mixture of 10% carbon dioxide, 90% nitrogen and argon, and the volume ratio of nitrogen and argon is 1:1;

[0024] (3), mixed reaction:

[0025] Fill the inert mixed gas into the hydration agent, make the pressure reach 7MPa, and react at 3°C ​​for 150 minutes to form mixed gas hydrate, and crush the mixed gas hydrate formed by the reaction below -10°C into particles with a particle size of less than 1.0mm Hydrate powder and serve.

Embodiment 2

[0027] In the specific implementation of the present invention, a preparation method of a low-carbon mixed gas hydrate explosion suppressing agent comprises the following steps:

[0028] (1) Preparation of hydration agent:

[0029] Add the inorganic salt NaCl to the dry water so that the mass content of NaCl is 0.01mol / L;

[0030] (2) Preparation of inert mixed gas:

[0031] The inert mixed gas is composed of a mixture of 7% carbon dioxide, 93% nitrogen and argon by volume, and the volume ratio of nitrogen to argon is 1:3;

[0032] (3), mixed reaction:

[0033] Fill the inert mixed gas into the hydration agent, make the pressure reach 6MPa, and react at 1°C for 160 minutes to generate mixed gas hydrate, and crush the mixed gas hydrate formed by the reaction into particles with a particle size of less than 1.0mm at a temperature below -10°C Hydrate powder and serve.

Embodiment 3

[0035] In the specific implementation of the present invention, a preparation method of a low-carbon mixed gas hydrate explosion suppressing agent comprises the following steps:

[0036] (1) Preparation of hydration agent:

[0037] adding the inorganic salt MgF into the dry solvent water, so that the mass content of the inorganic salt is 0.03mol / L;

[0038] (2) Preparation of inert mixed gas:

[0039] The inert mixed gas is composed of a volume ratio: 14% of carbon dioxide, 86% of a mixture of nitrogen and argon, and the nitrogen and argon are in any volume ratio;

[0040] (3), mixed reaction:

[0041] Fill the inert mixed gas into the hydration agent, make the pressure reach 8MPa, react at -10-5°C for 100-240min to form mixed gas hydrate, and crush the mixed gas hydrate formed by the reaction below -10°C into granules Hydrate powder with a diameter less than 1.0mm is ready.

[0042] As can be seen from the above, the present invention is a preparation method of a low-carb...

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Abstract

The invention relates to a preparation method of a low-carbon mixed gas hydrate explosion inhibitor, and can effectively solve the production problem of high-efficiency environmental-protection explosion-inhibition materials. The method comprises the steps: adding an inorganic salt into a solvent, making the mass content of the inorganic salt be 0.001-0.1 mol/L, and forming a hydration agent; mixing 5-15% of carbon dioxide and 85-95% of a nitrogen and argon mixed gas according to the volume ratio together, and forming an inert mixed gas; and filling the inert mixed gas into the hydration agent, making the pressure reach 4-10 MPa, carrying out a reaction at the temperature of -10 to 8 DEG C for 100-300 min to generate a mixed gas hydrate, crushing the mixed gas hydrate generated from the reaction into hydrate powder with the particle size of less than 1.0 mm at the temperature of -10 DEG C or less, and thus obtaining the product. The preparation method has the advantages of abundant rawmaterials, simple preparation method, easy synthesis and preparation, convenient use, low cost, cleaniness and environmental protection and good explosion suppression effect, is an innovation in theexplosion inhibitor, can effectively weaken energy required for the propagation of explosion pressure waves and hinder the propagation of explosion waves, and has huge economic and social benefits.

Description

technical field [0001] The invention relates to chemical industry, in particular to a high-efficiency and environment-friendly preparation method of a low-carbon mixed gas hydrate explosion suppressing agent. Background technique [0002] In the process of industrial production and transportation involving flammable and explosive gases and dust, fire, combustion and explosion accidents are prone to occur, and even secondary explosions may be caused, often causing major property losses and casualties. Explosion suppressants can effectively weaken and control explosion disasters, reduce property losses and casualties. Therefore, various countries have successively developed explosion suppression products to improve the safety of flammable and explosive liquid gases during production and transportation. Commonly used water systems have limited explosion suppression effects due to their strong fluidity; powders with complex structures have the disadvantages of complex preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 王兰云徐永亮李振东左宁梁浦浦陈蒙磊刘洋
Owner HENAN POLYTECHNIC UNIV
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