Catalytic removal device for carbon monoxide in underground blasting
By using a catalytic elimination device in underground blasting, a catalytic solution is injected into the absorption chamber between the inner and outer cylinders of the annular cylinder. The explosion releases oxygen and converts carbon monoxide into carbon dioxide, solving the problem of carbon monoxide accumulation in underground blasting and achieving efficient carbon oxidation conversion and safety adaptability.
Patent Information
- Application Number
- CN202423202832.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Carbon monoxide generated during underground blasting is difficult to control effectively, leading to its accumulation in underground spaces, which endangers human health and affects the environment. Existing technologies are insufficient to effectively remove it in complex underground spaces.
A carbon monoxide catalytic elimination device for well blasting is adopted, comprising an annular cylinder composed of a coaxial inner cylinder and an outer cylinder. A catalytic solution is injected into the absorption liquid chamber between the inner and outer cylinders, releasing oxygen at the moment of explosion, thus converting carbon monoxide into carbon dioxide. Safety and adaptability are ensured by using antistatic and non-sparking materials.
It effectively reduces carbon monoxide concentration by more than 55%, is easy to operate, adapts to complex environments, reduces the hazards of carbon monoxide during blasting, and is suitable for various downhole conditions.
Smart Images
Figure CN223586917U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of well blasting, in particular to a well blasting carbon monoxide catalytic elimination device. BACKGROUND
[0002] Explosive explosion is a complex chemical reaction process. According to the industrial explosive is with oxidant and reducing agent as the main body, according to the oxygen balance principle constitutes the explosive mixture. According to the oxygen balance principle, zero oxygen balance is the most ideal state in the industrial explosive process formula design, and the coal industrial explosive is often in partial negative oxygen balance for reducing the explosion temperature. This will lead to the incomplete explosion of explosive, and the carbon-containing components (such as some organic explosives of hydrocarbons) in it cannot be completely oxidized to carbon dioxide (CO2).
[0003] The carbon monoxide produced by well blasting causes great harm to the human body and the environment, and well blasting is usually carried out in a limited space in the well. If the ventilation system is not perfect, the carbon monoxide produced by blasting cannot be discharged in time, and will accumulate in the underground space. The layout of the underground roadway is complex, and the ventilation resistance is large, and there may be ventilation dead angles. In these areas, the concentration of carbon monoxide will rise rapidly. Therefore, the control of carbon monoxide produced by well blasting has always been an important research topic. CONTENT OF THE UTILITY MODEL
[0004] The utility model discloses to solve the series of problems such as the existing fence installation is not firm, needs to lift the fixed column of insertion in the adjacent fence in connecting installation, waste manpower and material resources and so on, provides a higher practicability, can realize the stable connection of civil construction protection fence through simple operation.
[0005] The utility model adopts the following technical scheme to realize:
[0006] A well blasting carbon monoxide catalytic elimination device, comprising a hollow annular cylinder, the annular cylinder comprises a coaxial inner cylinder and an outer cylinder, an absorption liquid cavity is left between the inner cylinder and the outer cylinder, a circular bottom cover is fixed to the bottom of the inner cylinder and the outer cylinder, and a ring cover is fixed to the top of the inner cylinder and the outer cylinder.
[0007] In implementation, the hollow annular cylinder is included, the material of the annular cylinder is anti-static and non-ignition material, the annular cylinder includes coaxial inner cylinder and outer cylinder, the inner diameter of the inner cylinder is 32mm, the outer diameter of the outer cylinder is 45mm, the wall thickness of the inner cylinder and the outer cylinder is less than or equal to 1mm, the height of the inner cylinder and the outer cylinder is equal and greater than the height of the filled explosive, the height of the inner cylinder and the outer cylinder is greater than 6 times of the inner diameter of the inner cylinder, so that in the explosion process, the high temperature and high pressure conditions in the explosion instant can release oxygen in the catalytic liquid in the absorption liquid cavity, at the same time, the released gas in the explosion fully contacts with the released oxygen in the absorption liquid cavity, so that the explosion is changed from negative oxygen balance to zero oxygen balance, specifically, the height of the inner cylinder and the outer cylinder is 215-325mm, the absorption liquid cavity is left between the inner cylinder and the outer cylinder, the bottom of the inner cylinder and the outer cylinder is fixed with a circular bottom cover, specifically, the bottom of the inner cylinder and the bottom of the outer cylinder is fused on the circular bottom cover, the top of the inner cylinder and the outer cylinder is fixed with a ring cover, that is, the top of the inner cylinder is fused on the inner edge of the ring cover, and the top of the outer cylinder is fused on the outer edge of the ring cover.
[0008] In use, the catalytic solution is injected into the absorption liquid cavity, the top of the inner cylinder and the outer cylinder is heated, the ring cover is placed on the top of the inner cylinder and the outer cylinder, and the ring cover is fused on the top of the inner cylinder and the outer cylinder, so as to close the absorption liquid cavity; the emulsion explosive is filled in the inner cylinder; and the device is assembled.
[0009] In initiation, the catalytic solution generates oxygen under the high temperature and high pressure in the explosion instant, and the released oxygen and carbon monoxide generated by the industrial explosive explosion generate carbon dioxide under the high temperature environment.
[0010] Compared with the prior art, the device has the following beneficial effects:
[0011] The device provided by the utility model is used for installing the explosive in the elimination device filled with the catalytic solution, oxygen can be released under the high temperature and high pressure conditions generated by the industrial explosive explosion, the released oxygen and carbon monoxide generated by the industrial explosive explosion generate carbon dioxide under the high temperature environment, and therefore the carbon monoxide is eliminated.
[0012] Without the carbon monoxide catalytic elimination sleeve, the average carbon monoxide concentration is much higher than that with the elimination sleeve, the device has good effect and can reduce more than 55%.
[0013] The device is simple in operation and convenient to use, is not an explosive, is not controlled, has strong applicability, is matched with the cartridge specification in actual application, can be flexibly adapted to the complex and changeable site conditions and the operation environment with specific requirements, and can be reasonably arranged according to the site environment. DETAILED DESCRIPTION
[0014] Figure 1 This is an assembly diagram of the present invention;
[0015] In the diagram: 1. Inner cylinder; 2. Outer cylinder; 3. Ring cover; 4. Circular bottom cover; 5. Absorbing liquid cavity; 6. Explosive. Detailed Implementation
[0016] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Example 1
[0017] A carbon monoxide catalytic elimination device for well blasting, such as Figure 1 As shown: The annular cylinder comprises a hollow ring-shaped body made of antistatic, non-sparking material. It consists of a coaxial inner cylinder 1 and an outer cylinder 2. The inner diameter of the inner cylinder 1 is 32mm, and the outer diameter of the outer cylinder 2 is 45mm. The wall thickness of both cylinders is less than or equal to 1mm. The heights of the inner and outer cylinders are equal and greater than the height of the explosive charge. The height of the inner and outer cylinders is greater than six times the inner diameter of the inner cylinder 1. This ensures that during the explosion, the high temperature and pressure conditions allow the catalytic liquid in the absorbent chamber 5 to release oxygen, while simultaneously ensuring that the released gas fully interacts with the absorbent liquid. The oxygen released from the liquid absorption chamber 5 contacts the liquid, causing the explosion to shift from a negative oxygen balance to a zero oxygen balance. In this embodiment, the height of the inner cylinder 1 and the outer cylinder 2 is 215mm. The liquid absorption chamber 5 is left between the inner cylinder 1 and the outer cylinder 2. A circular bottom cover 4 is fixed to the bottom of the inner cylinder 1 and the outer cylinder 2. Specifically, the bottom of the inner cylinder 1 and the bottom of the outer cylinder 2 are fused to the circular bottom cover 4. An annular cover 3 is fixed to the top of the inner cylinder 1 and the outer cylinder 2. The inner diameter of the annular cover 3 is 34mm and the outer diameter is 43mm. That is, the top of the inner cylinder 1 is fused to the inner edge of the annular cover 3, and the top of the outer cylinder 2 is fused to the outer edge of the annular cover 3.
[0018] In use, a catalytic solution is injected into the absorption chamber 5, the tops of the inner cylinder 1 and the outer cylinder 2 are heated, and the ring cover 3 is placed on the tops of the inner cylinder 1 and the outer cylinder 2 so that the ring cover 3 is fused to the tops of the inner cylinder 1 and the outer cylinder 2, thereby sealing the absorption chamber 5; the emulsion explosive 6 is filled into the inner cylinder 1; the elimination device is assembled.
[0019] During detonation, the catalytic solution generates oxygen under the high temperature and pressure of the explosion. The released oxygen reacts with carbon monoxide produced by the industrial explosives to generate carbon dioxide under high temperature. Example 2
[0020] A carbon monoxide catalytic elimination device for well blasting. In this embodiment, except that the height of the inner cylinder 1 and the outer cylinder 2 is 325mm, the rest is completely the same as in embodiment 1.
[0021] The carbon monoxide catalytic elimination devices of Examples 1 and 2 were tested.
[0022] In Example 1, the elimination device was filled with 200g of medicine rolls; in Example 2, the elimination device was filled with 300g of medicine rolls.
[0023] The control group was a blank control group without a carbon monoxide catalytic elimination sleeve, with 200g of the drug roll as control example 1 and 300g of the drug roll as control example 2.
[0024] A comparative test was conducted using an explosive test tower. The air inside the test tower was emptied, and a carbon monoxide tester was used to measure the value. The test was conducted when the value reached 0.
[0025] First, Comparative Example 1 (a 200g explosive roll without a carbon monoxide catalytic elimination sleeve) was tested. After the explosive detonated, personnel wearing gas masks measured the carbon monoxide concentration at six points in the explosion range inside the test tower, including the top, bottom, front, back, left, and right.
[0026] After the measurement was completed, the explosive gas inside the explosion tower was evacuated, and the test was carried out in Example 1 (200g cartridge with carbon monoxide catalytic elimination sleeve), and the carbon monoxide data was measured in the same way.
[0027] Similarly, the tests for Comparative Example 2 and Example 2 were performed, i.e., a 300g pill roll test.
[0028] The experimental results are as follows:
[0029]
[0030] Test Result Analysis:
[0031] I. Comparison between Comparative Example 1 and Comparative Example 2
[0032] The weight ratio of 200g to 300g of the drug roll is 66.6%. The carbon monoxide concentration ratio of Comparative Example 1 (200g drug roll without carbon monoxide catalytic elimination sleeve) and Comparative Example 2 (300g drug roll without carbon monoxide catalytic elimination sleeve) is 66.6, showing a linear relationship. It can be seen that the amount of carbon monoxide produced varies with the weight of the drug roll, and the larger the drug roll, the more carbon monoxide is produced.
[0033] II. Comparison between Comparative Example 1 and Example 1, and Comparative Example 2 and Example 2
[0034] In Example 1 (200g cartridge with carbon monoxide catalytic elimination sleeve), the carbon monoxide concentration decreased by 55.6% compared to Comparative Example 1 (200g cartridge without carbon monoxide catalytic elimination sleeve).
[0035] Example 2 (300g cartridge with CO catalytic elimination sleeve) compared to Comparative Example 2 (300g cartridge without CO catalytic elimination sleeve) CO concentration reduction was 57.1%; elimination ratio was also substantially linear.
[0036] The scope of the utility model is not limited to the above specific embodiments, and for those skilled in the art, the utility model can have various modifications and alterations, and any modification, improvement and equivalent replacement within the concept and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A device for catalytic removal of carbon monoxide from mine blast air, characterised in that: The hollow annular cylinder comprises coaxial inner cylinder (1) and outer cylinder (2), and the space between the inner cylinder (1) and the outer cylinder (2) is the absorption liquid cavity (5), the bottom of the inner cylinder (1) and the outer cylinder (2) is fixed with the circular bottom cover (4), and the top of the inner cylinder (1) and the outer cylinder (2) is fixed with the ring cover (3).
2. A device for catalytic elimination of carbon monoxide from mine workings according to claim 1, characterized in that: The bottom of the inner cylinder (1) and the bottom of the outer cylinder (2) are welded on the circular bottom cover (4).
3. A device for catalytic elimination of carbon monoxide in mine blasting according to claim 1, characterized in that: The top of the inner cylinder (1) is welded on the inner edge of the ring cover (3), and the top of the outer cylinder (2) is welded on the outer edge of the ring cover (3).
4. A device for catalytic elimination of carbon monoxide in mine blasting according to claim 1, characterized in that: The height of the inner cylinder (1) and the outer cylinder (2) is equal and greater than the height of the filled explosive (6).
5. A device for catalytic elimination of carbon monoxide from mine workings according to claim 4, characterized in that: The height of the inner cylinder (1) and the outer cylinder (2) is greater than 6 times the inner diameter of the inner cylinder (1).
6. A device for catalytic elimination of carbon monoxide in mine blasting according to claim 1, characterized in that: The wall thickness of the inner cylinder (1) and the outer cylinder (2) is less than or equal to 1mm.
7. A device for catalytic elimination of carbon monoxide in mine blasting according to claim 1, characterized in that: The inner diameter of the inner cylinder (1) is 32mm, the outer diameter of the outer cylinder (2) is 45mm, and the height of the inner cylinder (1) and the outer cylinder (2) is 215~325mm.
8. A device for catalytic elimination of carbon monoxide in mine blasting according to claim 1, characterized in that: The inner diameter of the ring cover (3) is 34mm, and the outer diameter is 43mm.