CN112811969A - High-energy activator for carbon dioxide phase change explosion and preparation method thereof - Google Patents
High-energy activator for carbon dioxide phase change explosion and preparation method thereof Download PDFInfo
- Publication number
- CN112811969A CN112811969A CN202110170849.3A CN202110170849A CN112811969A CN 112811969 A CN112811969 A CN 112811969A CN 202110170849 A CN202110170849 A CN 202110170849A CN 112811969 A CN112811969 A CN 112811969A
- Authority
- CN
- China
- Prior art keywords
- parts
- carbon dioxide
- phase change
- activator
- dioxide phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The embodiment of the invention provides a high-energy activator for carbon dioxide phase change explosion and a preparation method thereof, which relate to the technical field of carbon dioxide phase change cracking, and the activator comprises the following raw materials in parts by weight: 8-15 parts of ammonium oxalate, 15-25 parts of salicylic acid, 50-80 parts of guanidine nitrate, 8-15 parts of light metal and 5-8 parts of catalyst. The activator has stable performance, can not be ignited or detonated by naked fire in the air, and can also prevent collision, thereby avoiding combustion or explosion caused by collision or high-altitude falling; in addition, the activating agent is safe and reliable, and can be used efficiently by uniform confining pressure of liquid carbon dioxide in the fracturing pipe.
Description
Technical Field
The invention relates to the technical field of carbon dioxide phase change cracking, in particular to a high-energy activator for carbon dioxide phase change explosion and a preparation method thereof.
Background
The carbon dioxide phase change fracturing technology is a novel non-explosive fracturing technology adopted in recent years, is widely applied to rock blasting, mining, coal bed gas pumping increasing, storage tank blockage clearing and the like at present, and has the characteristics of simplicity in operation, strong adaptability, safety, high efficiency, economy and environmental protection. The technology is physical phase change blasting, so that the technology has unique advantages incomparable with other blasting equipment, can provide a new technology and a new process for gas safety control, coal bed extraction and mining under special mining conditions of a coal mine, and promotes the rapid development of the coal and mining industries.
The liquid carbon dioxide phase change cracking technology utilizes liquid carbon dioxide in a pipe to be heated, gasified and expanded, and releases high-pressure gas to act on rocks or coal blocks after reaction, overcomes the defects of high destructiveness, high danger and the like in the traditional explosive blasting exploitation and presplitting blasting, and is suitable for safe mining and presplitting blasting of mines. Under the action of an activator, the high-pressure liquid carbon dioxide expands rapidly in volume to break the rupture disk and is converted into a gas state rapidly, and the coal around the drill hole can be fractured under the expansion action of the gas released in a short time. The liquid carbon dioxide can absorb a large amount of heat when expanding in volume, can effectively reduce the temperature of the coal body within the cracking range, and is beneficial to inhibiting spontaneous combustion of the coal bed. Compared with the traditional blasting, the liquid carbon dioxide phase change cracking is safer, the blasting does not need to be checked during operation, people can enter the blasting after the blasting, and the liquid carbon dioxide phase change cracking can be connected in parallel to realize continuous work. Stress shock waves generated in the phase change reaction process form the action of reflecting tensile waves after being reflected on a free surface, so that a crushing area and an initial crack are generated around the rock. And when the shock wave is converted into a stress wave to be continuously transmitted, a large amount of high-pressure gas is generated to further expand along the fracture tip in the initial fracture, and the secondary fracture develops to form a blasting fracture far zone. Under the action of phase change cracking, gas expansion causes radial displacement of each mass point, and radial compression and tangential tension occur around the blast hole. When the tangential tensile stress exceeds the tensile ultimate strength, the rock body is damaged to generate cracks, and when the shock wave is gradually attenuated to be smaller than the tensile strength of the rock body, new cracks are not generated any more. Then high-pressure carbon dioxide gas invades towards the crack development direction, and the surrounding pressure stress is gradually reduced after the crack is expanded.
The carbon dioxide exists in a liquid state at a temperature lower than 31 ℃ and a pressure higher than 7.35MPa, starts to vaporize when the temperature exceeds 31 ℃, and changes with the pressure according to the change of the temperature. By utilizing the physical characteristics, the main pipe of the fracturing device is pressurized and filled with liquid carbon dioxide, the initiator is utilized to rapidly excite the activator to increase the temperature, the liquid carbon dioxide expands and gasifies instantly, when the generated high-pressure gas reaches the ultimate strength of the rupture disc, the high-pressure gas breaks the rupture disc, the high-pressure carbon dioxide is released from the gas leakage head and acts on the rock mass, and therefore the fracturing effect is achieved. When in connection, the fracturing devices can be connected in series or in parallel, so that multi-point simultaneous directional fracturing blasting can be realized.
The activating agent is arranged in the main body pipe of the cracking pipe and provides heat energy for the phase change gasification of the liquid carbon dioxide. Most of the main components of the existing activators for phase change cracking of carbon dioxide are potassium perchlorate or potassium permanganate, which are used as strong oxidizers to provide oxygen required by combustion in a closed oxygen-free environment. In the GHS risk category classification, potassium perchlorate is classified as an oxidizing solid category 1, a dangerous strong oxide that may cause combustion or explosion; potassium permanganate is classified as an oxidizing solid class 2 and a class 1 that is hazardous to aquatic environments-acute and long-term hazards, with negative effects of environmental pollution.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a high-energy activator for carbon dioxide phase change explosion and a preparation method thereof.
The invention is realized by the following steps:
in a first aspect, an embodiment of the present invention provides a high-energy activator for carbon dioxide phase change explosion, where the raw materials include, in parts by weight: 8-15 parts of ammonium oxalate, 15-25 parts of salicylic acid, 50-80 parts of a strong oxidant, 8-15 parts of a light metal and 5-8 parts of a catalyst;
wherein the strong oxidant is guanidine nitrate.
In a second aspect, embodiments of the present invention provide a method for preparing a high-energy activator for carbon dioxide phase change explosion, in which raw materials of the high-energy activator for carbon dioxide phase change explosion as described in the foregoing embodiments are mixed.
In a third aspect, embodiments of the present invention provide a carbon dioxide phase change cracker, which includes a cracking tube, and the cracking tube is filled with a high-energy activator for carbon dioxide phase change explosion as described in any one of the foregoing embodiments.
The invention has the following beneficial effects:
the embodiment of the invention provides a high-energy activator for carbon dioxide phase change explosion and a preparation method thereof, wherein the activator comprises the following raw materials in parts by weight: 8-15 parts of ammonium oxalate, 15-25 parts of salicylic acid, 50-80 parts of guanidine nitrate, 8-15 parts of light metal and 5-8 parts of catalyst. The activator has stable performance, can not be ignited or detonated by naked fire in the air, and can also prevent collision, thereby avoiding combustion or explosion caused by collision or high-altitude falling; in addition, the activating agent is safe and reliable, and can be used efficiently by uniform confining pressure of liquid carbon dioxide in the fracturing pipe.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 shows the pressure data of a chamber of a high-energy activator used for carbon dioxide phase transition cracking tube in test example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The invention provides a high-energy activator for carbon dioxide phase change explosion, which comprises the following raw materials in parts by weight: 8-15 parts of ammonium oxalate, 15-25 parts of salicylic acid, 50-80 parts of a strong oxidant, 8-15 parts of a light metal and 5-8 parts of a catalyst;
wherein the strong oxidant is guanidine nitrate.
Guanidine Nitrate (GN), chemical name diaminoguanidine nitrate, molecular formula CH6N403Or CH5N3·HNO3. White crystalline powder or granular solid, can be dissolved in ethanol and water, slightly soluble in acetone, and insoluble in benzene and diethyl ether. The guanidine nitrate has wide application, is mainly used for synthesizing pharmaceutical and pesticide intermediates such as sulfadiazine and the like, rocket propellant, paint industry, photographic materials, disinfectant and other fields, and can also be used as fuel of a gas generating agent in an automobile safety airbag.
Ammonium oxalate, an inorganic substance of formula (NH)4)2C2O4Soluble in water and slightly soluble in ethanol. The aqueous solution is acidic.
Salicylic acid, a fat-soluble organic acid of formula C7H6O3. The appearance is white crystalline powder, and the melting point is 158-161 ℃. It is an important fine chemical raw material in willow bark, white-bead tree leaf and sweet birch.
Light metals, metals having a relative density of less than 5, are classified into non-ferrous light metals and rare light metals. Specifically, the non-ferrous light metals include aluminum, magnesium, calcium, titanium, potassium, strontium, barium and the like, the former four metals are mainly used as reducing agents in industry, and the aluminum, magnesium, titanium and alloys thereof have small relative density, high strength and strong corrosion resistance. Rare light metals include lithium, beryllium, rubidium, cesium and the like.
Strong oxidizers, which refer to substances with strong oxidizing properties. The property of an oxidant to acquire electrons is called oxidation, and the determinants of the oxidation are the electron-acquiring tendency of high-valence elements in the material. In solution, according to the theory of electric double layers, the magnitude of the oxidation is reflected as the standard hydrogen electrode potential of the oxidant: the higher the potential, the stronger the oxidation; the lower the potential, the weaker the oxidizing property and correspondingly the stronger the reducing property of the reduced state. Strong oxidizers are oxidizing species having a high potential.
In the formula components, the dosage of guanidine nitrate is a main factor for controlling the explosion effect of the cracked tube. Within the range, the reaction rate can be accelerated by correspondingly increasing the amount of guanidine nitrate, the heating speed is higher, and the heat value is higher, so that the explosion effect is improved. If the dosage of guanidine nitrate is too low, the heating speed is relatively slow, and the target effect cannot be achieved due to explosion; guanidine nitrate may be used in an excessively high amount and may not react completely.
In addition, in practical engineering application, the purity of the raw materials adopted by each component of the activating agent also influences the effect, and the proportion of the raw materials with insufficient purity needs to be increased in a proper amount.
Through a series of creative works, the inventor of the invention finds that the guanidine nitrate is adopted to replace potassium perchlorate, and the guanidine nitrate serving as a strong oxidant in the activator has unexpected technical effect. Specifically, the decomposition of guanidine nitrate is an endothermic followed by an exothermic process, and the endothermic result is due to the melting phase transition of guanidine nitrate followed by an exothermic process. On one hand, the exothermic reaction can accelerate the decomposition reaction and enable the decomposition to be more thorough, the exothermic rate and the peak temperature are increased along with the increase of the temperature rise rate, and the representation of the autocatalysis reaction is more obvious; on the other hand, the heat release can directly provide the heat energy required by the phase change gasification of the liquid carbon dioxide, and the purpose of increasing the temperature and improving the heat energy to promote the phase change gasification of the liquid carbon dioxide is achieved more efficiently.
Secondly, the decomposition reaction rate of guanidine nitrate is faster than potassium perchlorate. Guanidine nitrate molecules are decomposed by heating, firstly nitrogen-oxygen single bonds are broken, secondly nitrogen-oxygen double bonds are broken, namely nitric acid parts preferentially generate water, oxygen and nitrogen oxides, and carbon-nitrogen single bonds in residual guanidine groups are further decomposed to generate ammonia and carbon dioxide.
Further, in the GHS risk category classification, potassium perchlorate is classified as an oxidizing solid category 1, a dangerous strong oxide which may cause combustion or explosion; potassium permanganate is classified as an oxidizing solids class 2 and as a hazardous aquatic environment-acute and long-term hazards class 1. In contrast, guanidine nitrate is safer and environmentally friendly.
In some embodiments, the weight parts of ammonium oxalate may be selected from any of 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, and 15 parts.
In some embodiments, the parts by weight of salicylic acid may be selected from any of 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, and 25 parts by weight.
In some embodiments, the weight parts of guanidine nitrate may be selected from any of 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 62 parts, 64 parts, 66 parts, 68 parts, 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, and 80 parts.
In some embodiments, the weight fraction of light metals may be selected from: any of 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts and 15 parts.
In some embodiments, the parts by weight of the catalyst may be selected from: any of 5 parts, 6 parts, 7 parts and 8 parts.
Preferably, the feedstock comprises the following components: 8-12 parts of ammonium oxalate, 15-22 parts of salicylic acid, 50-70 parts of guanidine nitrate, 8-12 parts of light metal and 5-7 parts of ferric oxide.
Preferably, the activator comprises the following components in parts by weight: 8-10 parts of ammonium oxalate, 15-20 parts of salicylic acid, 50-60 parts of guanidine nitrate, 8-10 parts of light metal and 5-6 parts of ferric oxide.
Preferably, the catalyst is a metal oxide.
Preferably, the catalyst is ferric oxide.
Preferably, the light metal is a powder;
preferably, the light metal is selected from: any one of aluminum powder, magnesium powder or aluminum magnesium mixed powder.
Preferably, the light metal is aluminum powder. The superfine magnesium powder has higher cost, is not suitable in engineering application, has good aluminum powder effect and low cost, and is more suitable for practical use.
Preferably, the particle size of the aluminum powder is 400-800 meshes.
In some embodiments, the particle size of the aluminum powder may be selected from: the mesh number is any of 400 mesh, 500 mesh, 600 mesh, 700 mesh and 800 mesh.
The activator provided by the invention has the following advantages: the formula has stable performance, and can not be ignited or detonated by open fire in the air; the anti-collision device can prevent collision and prevent or reduce combustion or explosion caused by collision or high-altitude falling; safe and reliable, it can high-efficiently use through the even confined pressure of liquid carbon dioxide in sending the fracture intraductal.
In addition, compared with the prior art, the formula has the advantages of fewer adopted components, reduction of a plurality of components, cost reduction and better effect, such as: the nature of sodium fluoride is a passivating agent, completely inert and does not participate in any role in the reaction; the charcoal powder has too low heat value and does not play an obvious role; oxalic acid is essentially oxalic acid and is not required in the activator.
The embodiment of the invention also provides a preparation method of the high-energy activator for carbon dioxide phase change explosion, which is to uniformly mix the raw materials of the high-energy activator for carbon dioxide phase change explosion as described in any one of the previous embodiments.
In addition, the embodiment of the invention provides a carbon dioxide phase change cracker which comprises a cracking tube, wherein the cracking tube is filled with the high-energy activating agent for carbon dioxide phase change explosion according to any one of the previous embodiments.
It should be noted that the present invention has no optimization for the fracturing device and the fracturing pipe, and the specific structures of the fracturing device and the fracturing pipe can be obtained by the prior art, which is not described herein again.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment of the invention provides a preparation method of a high-energy activator for carbon dioxide phase change explosion, which comprises the following steps of mixing the following raw materials.
The raw materials of the activating agent comprise the following components:
11 parts of ammonium oxalate, 22 parts of salicylic acid, 65 parts of guanidine nitrate, 11 parts of fine-grained aluminum powder and 6 parts of ferric oxide.
Example 2
The embodiment of the invention provides a preparation method of a high-energy activator for carbon dioxide phase change explosion, which is approximately the same as that in embodiment 1, and is different from the embodiment 1 in the ratio of raw materials, wherein the raw materials of the activator comprise the following components:
13 parts of ammonium oxalate, 25 parts of salicylic acid, 70 parts of guanidine nitrate, 12 parts of fine-grained aluminum powder and 7 parts of ferric oxide.
Example 3
The embodiment of the invention provides a preparation method of a high-energy activator for carbon dioxide phase change explosion, which is approximately the same as that in embodiment 1, and is different from the embodiment 1 in the ratio of raw materials, wherein the raw materials of the activator comprise the following components:
15 parts of ammonium oxalate, 25 parts of salicylic acid, 80 parts of guanidine nitrate, 15 parts of fine-grained aluminum powder and 8 parts of ferric oxide.
Example 4
The embodiment of the invention provides a preparation method of a high-energy activator for carbon dioxide phase change explosion, which is approximately the same as that in embodiment 1, and is different from the embodiment 1 in the ratio of raw materials, wherein the raw materials of the activator comprise the following components:
9 parts of ammonium oxalate, 20 parts of salicylic acid, 55 parts of guanidine nitrate, 8 parts of fine-grained aluminum powder and 5 parts of ferric oxide.
Example 5
The embodiment of the invention provides a preparation method of a high-energy activator for carbon dioxide phase change explosion, which is approximately the same as that in embodiment 1, and is different from the embodiment 1 in the ratio of raw materials, wherein the raw materials of the activator comprise the following components:
10 parts of ammonium oxalate, 21 parts of salicylic acid, 60 parts of guanidine nitrate, 9 parts of fine-grained aluminum powder and 6 parts of ferric oxide.
The activating agents prepared in the above embodiments 1 to 5 have good activating effect, fast heating and high heat value, so that the liquid carbon dioxide in the cracking device is rapidly transformed and gasified, and an ideal explosion effect is achieved.
Comparative example 1
This comparative example provides a process for the preparation of a high energy activator for carbon dioxide phase change explosion, substantially the same as example 1, except for the different proportions of the raw materials, the raw materials of the activator comprising the following components:
10 parts of ammonium oxalate, 20 parts of salicylic acid, 40 parts of guanidine nitrate, 10 parts of fine-grained aluminum powder and 4 parts of ferric oxide.
The reaction speed is slow and the activation effect is not good.
Comparative example 2
This comparative example provides a process for the preparation of a high energy activator for carbon dioxide phase change explosion, substantially the same as example 1, except for the different proportions of the raw materials, the raw materials of the activator comprising the following components:
5 parts of ammonium oxalate, 10 parts of salicylic acid, 80 parts of guanidine nitrate, 6 parts of fine-grained aluminum powder and 8 parts of ferric oxide.
Incomplete reaction and poor activation effect.
Comparative example 3
This comparative example provides a process for the preparation of a high energy activator for carbon dioxide phase change explosion, substantially the same as example 1, except for the different proportions of the raw materials, the raw materials of the activator comprising the following components:
10 parts of ammonium oxalate, 10 parts of salicylic acid, 70 parts of guanidine nitrate, 10 parts of fine-grained aluminum powder and 1 part of ferric oxide.
Incomplete reaction and poor activation effect.
Verification example 1
The preparation method provided in example 1 is adopted to prepare the activator, and the activator is used for a bore pressure test of a carbon dioxide phase transition fracturing pipe after preparation, and the test data are shown in table 1 and fig. 1.
TABLE 1 test data
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The high-energy activator for carbon dioxide phase change explosion is characterized by comprising the following raw materials in parts by weight: 8-15 parts of ammonium oxalate, 15-25 parts of salicylic acid, 50-80 parts of a strong oxidant, 8-15 parts of a light metal and 5-8 parts of a catalyst;
wherein the strong oxidant is guanidine nitrate.
2. The high-energy activator for carbon dioxide phase change explosion according to claim 1, wherein the raw materials comprise the following components in parts by weight: 8-12 parts of ammonium oxalate, 15-22 parts of salicylic acid, 50-70 parts of a strong oxidant, 8-12 parts of a light metal and 5-7 parts of ferric oxide.
3. The high-energy activator for carbon dioxide phase change explosion according to claim 2, wherein the activator comprises the following components in parts by weight: 8-10 parts of ammonium oxalate, 15-20 parts of salicylic acid, 50-60 parts of a strong oxidant, 8-10 parts of a light metal and 5-6 parts of ferric oxide.
4. The high energy activator for carbon dioxide phase transition explosion according to any one of claims 1 to 3, wherein the catalyst is a metal oxide.
5. The energetic activator for carbon dioxide phase change explosion according to claim 4, characterized in that the catalyst is ferric oxide.
6. The high energy activator for carbon dioxide phase change explosion according to any one of claims 1 to 3, wherein the light metal is a powder;
preferably, the light metal is selected from: any one of aluminum powder, magnesium powder or aluminum magnesium mixed powder.
7. The high energy activator for carbon dioxide phase change explosion according to claim 6, wherein the light metal is aluminum powder.
8. The high-energy activator for carbon dioxide phase change explosion according to claim 7, wherein the particle size of the aluminum powder is 400 to 800 mesh.
9. A preparation method of a high-energy activator for carbon dioxide phase change explosion is characterized by comprising the following steps: uniformly mixing the raw materials of the high-energy activator for carbon dioxide phase transition explosion according to any one of claims 1 to 8.
10. A carbon dioxide phase change cracker which is characterized in that the cracker comprises a cracking tube, and the cracking tube is filled with the high-energy activating agent for carbon dioxide phase change explosion according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110170849.3A CN112811969A (en) | 2021-02-08 | 2021-02-08 | High-energy activator for carbon dioxide phase change explosion and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110170849.3A CN112811969A (en) | 2021-02-08 | 2021-02-08 | High-energy activator for carbon dioxide phase change explosion and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112811969A true CN112811969A (en) | 2021-05-18 |
Family
ID=75863788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110170849.3A Pending CN112811969A (en) | 2021-02-08 | 2021-02-08 | High-energy activator for carbon dioxide phase change explosion and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112811969A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006088348A1 (en) * | 2005-02-18 | 2006-08-24 | Technische Universiteit Delft | Process for carrying out a chemical reaction with ionic liquid and carbon dioxide under pressure |
| CN102992926A (en) * | 2012-12-13 | 2013-03-27 | 煤炭科学研究总院 | Anaerobic pressure-controlled heating agent and use thereof |
| CN111153756A (en) * | 2020-01-09 | 2020-05-15 | 侯丽红 | Heating material for carbon dioxide cracking device |
-
2021
- 2021-02-08 CN CN202110170849.3A patent/CN112811969A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006088348A1 (en) * | 2005-02-18 | 2006-08-24 | Technische Universiteit Delft | Process for carrying out a chemical reaction with ionic liquid and carbon dioxide under pressure |
| CN102992926A (en) * | 2012-12-13 | 2013-03-27 | 煤炭科学研究总院 | Anaerobic pressure-controlled heating agent and use thereof |
| CN111153756A (en) * | 2020-01-09 | 2020-05-15 | 侯丽红 | Heating material for carbon dioxide cracking device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2012326644B2 (en) | Explosive pellet | |
| CN110981660B (en) | Rock coal pre-cracking agent and preparation method thereof | |
| US5540793A (en) | Porous prilled ammonium nitrate | |
| US3270815A (en) | Combination hydraulic-explosive earth formation fracturing process | |
| US6669753B1 (en) | Method and composition for desensitizing the explosive performance of commercially available fertilizers | |
| US20070107820A1 (en) | Gas-generating compositions, fracturing system and method of fracturing material | |
| Meyers et al. | Effect of shock pressure and plastic strain on chemical reactions in Nb Si and Mo Si systems | |
| CN112811969A (en) | High-energy activator for carbon dioxide phase change explosion and preparation method thereof | |
| Oxley | The chemistry of explosives | |
| CN107091090A (en) | A kind of mine carbon dioxide demolition set | |
| Zygmunt et al. | Application and properties of aluminum in primary and secondary explosives | |
| CN114956915A (en) | Gas generating agent of double-base propellant for fractured rock pipe and preparation method thereof | |
| Comet et al. | Submicron potassium perchlorate: a key component to reach detonation in binary mixtures with titanium hydride | |
| JP4818583B2 (en) | Insensitive high-power non-explosive crushing agent | |
| CN110218133B (en) | Explosive and preparation method and application thereof | |
| CN114920612A (en) | Single-base propellant gas production agent for fractured rock pipe and preparation method thereof | |
| CN108218645A (en) | A kind of high precision tungsten type delay composition of delay detonating detonator and preparation method thereof | |
| KR100508230B1 (en) | Cast explosive composition with microballoons | |
| RU2154733C1 (en) | Process and composition for chemical initiation of burning of aqueous solution of fuel and oxidizer compound under barometric treatment of pool | |
| CN113149797A (en) | Intrinsic safety type carbon dioxide gasifying agent and preparation method thereof | |
| US3096223A (en) | Slurry blasting explosives containing inorganic prechlorate or chlorate | |
| KR20160095767A (en) | metallic compound for blasting | |
| Oxley | Non‐traditional explosives: Potential detection problems | |
| KR100516799B1 (en) | A fracturing composition utilizing dissociation pressure and gas pressure | |
| Shishkov et al. | Rock splitting with pyrotechnic compositions and secondary propellants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |