Biomass particle carbon type adsorption combustion agent and fracturing rock breaking pipe

Abstract

The invention discloses a biomass particle carbon type adsorption combustion agent and a cracking rock breaking pipe, and the method specifically comprises the following steps: selecting a biomass raw material, and carrying out the pretreatment of the biomass raw material; then crushing and granulating the pretreated biomass raw material by using mechanical equipment to obtain biomass particles; carbonizing and activating the biomass particles to obtain an adsorption combustion agent; weighing the prepared adsorption incendiary agent, and packaging the adsorption incendiary agent into a plurality of mutually connected and independent adsorption incendiary agent bags by adopting an adsorption incendiary agent wrapping layer; then the adsorption combustion agent bag is made into an adsorption combustion agent roll, and the cracking rock breaking pipe is made through the biomass particle carbon type adsorption combustion agent roll. The problems that in the prior art, the manufacturing cost of a fracturing rock breaking pipe combustion core is high, and a large amount of industrial sewage is generated are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas rock breaking, and specifically relates to a biomass particle carbon type adsorption combustion agent. The present invention also relates to a fracture rock breaking pipe prepared based on the above-mentioned biomass particle carbon type adsorption combustion agent. Background Art

[0002] Compared with the traditional explosive blasting technology, a liquid oxygen - biomass green high - energy instant release rock breaking complete set of technologies based on liquid oxygen and carbon - based materials as blasting or rock breaking media has the characteristics of safety, economy, greenness, low carbon, and convenient construction.

[0003] The prior art with the publication number CN114184090A discloses a flexible fracture device filled in a hole and its use method. First, the bottom end of the flexible membrane sleeve is closed, and then the ignition core is filled in the flexible membrane sleeve. The function of the ignition core is to burn rapidly after ignition, generate heat energy, and conduct heat exchange with the liquid fracture medium, so that the liquid fracture medium changes from liquid to gas, releasing high - pressure gas; the liquid inlet pipe passes through the ignition core and extends to the bottom of the flexible membrane sleeve, and the liquid inlet pipe orifice extends out of the flexible membrane sleeve and is provided with an inflation head; one (including) or more electric ignition devices are extended into the flexible membrane sleeve and are in contact with the ignition core; an exhaust pipe is arranged at the top end of the flexible membrane sleeve; then the top end of the flexible membrane sleeve is closed; the fracture device is installed in the hole, and the liquid fracture medium is filled into the interior of the fracture device through the liquid inlet pipe. The liquid fracture medium is adsorbed on the ignition core. After filling the liquid fracture medium, the liquid inlet pipe and the exhaust pipe are closed, and the electric ignition device is ignited to ignite the ignition core. The ignition core reacts with the liquid fracture medium by combustion, and then releases high - pressure gas to achieve rock fracture.

[0004] However, in the above - mentioned scheme, the ignition core of the fracture rock breaking pipe often uses fluffy rolled paper. However, the price of rolled paper is relatively high, and the process of producing rolled paper requires a large amount of energy and industrial water, generating a large amount of industrial sewage. At the same time, there are also situations such as relatively low blasting force. Summary of the Invention

[0005] The purpose of the present invention is to provide a biomass particle carbon type adsorption combustion agent, which solves the problems of high manufacturing cost of the ignition core of the fracture rock breaking pipe in the prior art and the generation of a large amount of industrial sewage.

[0006] Another purpose of the present invention is to provide a fracture rock breaking pipe.

[0007] The first technical solution adopted by the present invention is a biomass particle carbon type adsorption combustion agent, which specifically includes the following steps: Step 1, select biomass raw materials and perform pretreatment on the biomass raw materials; Step 2, use mechanical equipment to crush and granulate the pretreated biomass raw materials to obtain biomass particles; Step 3: Carbonize and activate the biomass particles to obtain the adsorption combustion agent. The first technical solution of the present invention is further characterized in that In step 1, the biomass raw materials include the roots, branches, leaves, vines, and straws of various plants. The pretreatment includes removing large impurities in the biomass raw materials and truncating the overly long biomass raw materials.

[0008] In step 2, the particle size of the biomass particles is 1 mm to 4 mm.

[0009] In step 3, the carbonization treatment is specifically to place the biomass particles in a vacuum carbonization furnace or an inert gas protection furnace for temperature-raising carbonization. The heating rate is 5 °C / min to 10 °C / min. After heating to 400 °C to 600 °C, keep warm for 1 h to 2 h. The activation treatment is to soak the biomass particles after carbonization treatment in the activator solution for 12 h to 24 h. After completion of soaking, take out the biomass particles and transfer them to a cremation furnace. Pass in steam or carbon dioxide as the activation gas, and raise the temperature to 800 °C to 950 °C at a heating rate of 3 °C / min to 5 °C / min, and keep warm for 0.5 h to 1 h. Wait for the temperature in the furnace to cool to room temperature, take out the biomass particles, wash them with deionized water to obtain the adsorption combustion agent.

[0010] The activator solution is potassium hydroxide or phosphoric acid, and the mass ratio of the activator solution to the biomass particles is 1 to 3:1.

[0011] The particle size of the adsorption combustion agent obtained in step 3 is 0.5 mm to 2.5 mm, the specific surface area of the adsorption combustion agent is not less than 200 m² / g, and the calorific value of the adsorption combustion agent is not lower than 18 MJ / kg.

[0012] The second technical solution adopted by the present invention is the fracturing rock-breaking pipe, which specifically includes the following steps: Step 1: Weigh the above-prepared adsorption combustion agent, and use an adsorption combustion agent wrapping layer to encapsulate the adsorption combustion agent into several interconnected and independent adsorption combustion agent packages. Step 2: Make the adsorption combustion agent packages into a biomass particle carbon-type adsorption combustion agent roll in a rolled form. Step 3: Put the biomass particle carbon-type adsorption combustion agent roll on the outside of the liquid inlet pipe, and then load the biomass particle carbon-type adsorption combustion agent roll with the liquid inlet pipe into a flexible outer membrane to form a fracturing rock-breaking pipe.

[0013] The second technical solution of the present invention is further characterized in that In Step 1, the adsorbent combustion agent wrapping layer is a non-woven fabric made of wood pulp composite fiber, viscose fiber, or polypropylene fiber; the weight per square meter of the adsorbent combustion agent wrapping layer is 10 g to 30 g; the maximum pore size of the adsorbent combustion agent wrapping layer is not larger than the minimum particle size of the adsorbent combustion agent.

[0014] In Step 1, the encapsulation specifically includes heat sealing, adhesive sealing, or thread stitching.

[0015] The beneficial effects of the present invention are as follows: (1) The biomass pellet carbon-based adsorbent combustion agent of the present invention uses the roots, branches, leaves, straws, etc. of various plants, and is crushed into pellets by various common pellet crusher equipment (such as poultry feed pellet crushers, etc.). The raw materials are widely sourced and have low costs. The processing equipment is common and the processing cost is low. No harmful substances are generated during the processing and combustion processes, and it is relatively environmentally friendly, which can effectively reduce the cost of rock-breaking consumable materials.

[0016] (2) In the present invention, the fracturing and rock-breaking tube encapsulates the biomass pellet carbon-based adsorbent combustion agent into interconnected and independent adsorbent combustion agent packages through methods such as heat sealing, adhesive sealing, or thread stitching. Then, the interconnected and independent adsorbent combustion agent packages are made into an adsorbent combustion agent roll by rolling and filled into a flexible outer membrane. The biomass particles after carbonization and activation treatment have a rich pore structure and a large specific surface area, which can effectively adsorb liquid oxygen or pressurized high-purity oxygen, while enhancing the explosive force and improving the rock-breaking effect. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a single combustion agent package of the present invention; Figure 2 is of the present invention Figure 1 a cross-sectional view from the A perspective in; Figure 3 is a schematic structural diagram of the combustion agent package in Example 4 of the present invention; Figure 4 is of the present invention Figure 3 a cross-sectional view from the B perspective in; Figure 5 is a schematic loading structure diagram of the fracturing and rock-breaking tube in Examples 4 and 5 of the present invention; Figure 6 is a schematic loading structure diagram of the fracturing and rock-breaking tube in Example 6 of the present invention; Figure 7 is Figure 5 and Figure 6 a cross-sectional view from the C perspective in; Figure 8 is a schematic structural diagram of the combustion agent package in Example 5 of the present invention; Figure 9 is a schematic structural diagram of the combustion agent package in Example 6 of the present invention; In the figure, 1. Flexible outer membrane, 2. Liquid inlet pipe, 3. Exhaust pipe, 4. Electric ignition device, 5. Adsorbed combustion agent, 6. Adsorbed combustion agent wrapping layer, 7. Adsorbed combustion agent package, 8. Biomass particle charcoal type adsorbed combustion agent roll. Specific embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0019] Embodiment 1 The biomass particle charcoal type adsorbed combustion agent of the present invention specifically includes the following steps: Step 1, select biomass raw materials. The biomass raw materials include the roots, branches, leaves, vines, and straws of various plants, and then perform pretreatment on the biomass raw materials; when selecting the biomass raw materials, the mildewed and rotten parts should be screened out, and at the same time, the impurities that may affect the formation of biomass particles, combustion, and rock breaking effect should be removed.

[0020] The pretreatment includes removing large impurities in the biomass raw materials and truncating the too long biomass raw materials to facilitate the operations of pulverization and granulation.

[0021] Step 2, perform pulverization and granulation treatment on the pretreated biomass raw materials by mechanical equipment to obtain biomass particles; strictly control the granulation particle size of the pulverizer and granulator so that the particle size of the biomass particles reaches 1 mm to 4 mm.

[0022] Specifically, a hammer mill (model: SFSP56×40) is used for pulverizing the biomass raw materials during the pulverization process. This equipment is applicable to various biomass raw materials such as straws, wood chips, and rice husks. Its operation uses the high-speed rotating hammer blades to impact, shear, and rub the materials. The pretreated biomass raw materials are put into the feed inlet of the pulverizer. By adjusting the feed speed, the pulverization efficiency is controlled, and by adjusting the screen aperture, the particle size of the pulverized materials is controlled, so that the particle size of the pulverized biomass raw materials is evenly distributed between 2 and 4 mm to meet the subsequent granulation requirements; The granulation process uses a ring die granulator (model: ZLSP420) to prepare biomass pellets. The crushed biomass raw materials are conveyed to the hopper of the granulator, and the materials are evenly fed into the granulation chamber through a screw feeder. The ring die in the granulation chamber rotates at a speed of 60 - 80 r / min, and the pressure roller rotates self - driven by the ring die, exerting an extrusion effect on the materials. The steam addition amount is adjusted to control the material humidity, keeping the material humidity at 15% - 18% for easy forming. Under the extrusion of the pressure roller and the ring die, the materials are extruded through the die holes of the ring die to form cylindrical pellets, and then cut by a cutter according to the set length to finally obtain biomass pellets.

[0023] Step 3: Carbonize and activate the biomass pellets to obtain the adsorption combustion agent 5.

[0024] The particle size of the adsorption combustion agent 5 is 0.5 mm - 2.5 mm, the specific surface area of the adsorption combustion agent 5 is not less than 200 ㎡ / g, and the calorific value of combustion of the adsorption combustion agent 5 is not less than 18 MJ / kg.

[0025] The adsorption combustion agent 5 prepared by the present invention uses the roots, branches, leaves, straws, etc. of various plants, and is broken into particulate form by various common particle crusher equipment (such as poultry feed particle crushers, etc.). The raw material sources are wide, the cost is low, the processing equipment is common, the processing cost is low, no harmful substances are generated during the processing and after combustion, it is relatively environmentally friendly, and it can effectively reduce the cost of rock - breaking consumable materials.

[0026] Example 2 Based on the above Example 1, in this example, the carbonization treatment in step 2 of the biomass particle carbon - type adsorption combustion agent of the present invention specifically places the biomass pellets prepared in step 2 in a vacuum carbonization furnace or an inert gas - protected furnace (such as nitrogen, argon atmosphere) to avoid the oxidation reaction of the biomass pellets at high temperature. Set the heating rate to 5 - 10℃ / min, and slowly heat up to 400 - 600℃. This temperature range can cause the organic matter in the biomass pellets to undergo pyrolysis reactions, gradually removing substances such as moisture and volatile components, and forming a stable porous carbon skeleton.

[0027] Keep the temperature constant at this temperature for 1 - 2 hours to ensure that the pyrolysis reaction proceeds fully, stabilize the internal structure of the biomass pellets, and thus improve their thermal stability. After carbonization is completed, wait for the temperature in the furnace to cool naturally to room temperature, and then take out the carbonized biomass pellets to prevent damage to the particle structure caused by a sudden temperature drop.

[0028] The activation treatment specifically uses a combination of chemical activation method and physical activation method to treat the carbonized biomass pellets.

[0029] First, soak the carbonized biomass particles in an activator solution. Common activators include potassium hydroxide (KOH), phosphoric acid (H3PO4), etc. The mass ratio of the activator to the biomass particles is controlled between 1 - 3:1, and the soaking time is 12 - 24 hours to allow the activator to fully penetrate into the pore structure of the particles. After soaking, take out the particles and drain the excess solution, then transfer them to a high-temperature activation furnace.

[0030] In the high-temperature activation furnace, introduce steam or carbon dioxide as the activation gas, and increase the temperature to 800 - 950 °C at a heating rate of 3 - 5 °C / min. At this temperature, the activator reacts chemically with the carbon skeleton, and at the same time, the activation gas reacts with the carbon in a gasification reaction to further expand the pore structure of the biomass particles, significantly enhancing their specific surface area and liquid oxygen adsorption capacity.

[0031] After the high-temperature activation process lasts for 0.5 - 1 hour, stop introducing the activation gas. Wait for the temperature in the furnace to cool to room temperature, and then take out the activated biomass particles. Finally, repeatedly wash the activated biomass particles with deionized water until the washing liquid is neutral to remove the residual activator, and finally obtain the biomass particle carbon-based adsorption combustion agent.

[0032] Example 3 The fracturing and rock-breaking tube of the present invention is prepared using the biomass particle carbon-based adsorption combustion agent prepared in the above Example 1 and Example 2, and specifically includes the following steps: Step 1, weigh 5 of the adsorption combustion agent prepared above, as Figure 1 and Figure 2 shown, use the adsorption combustion agent wrapping layer 6 to encapsulate the adsorption combustion agent 5 to form a single adsorption combustion agent package 7; the adsorption combustion agent wrapping layer 6 is a non-woven fabric made of wood pulp composite fiber material or viscose fiber material or polypropylene fiber material, which has excellent air permeability and liquid permeability and will not affect the liquid oxygen adsorption capacity of the adsorption combustion agent.

[0033] Step 2, load the adsorption combustion agent package 7 into the flexible outer membrane 1 and introduce the inlet pipe 2 to form a fracturing and rock-breaking tube.

[0034] In the above solution, since a single adsorption combustion agent package 7 is prepared, the adsorption combustion agent package 7 cannot be effectively wound around the outside of the inlet pipe 2, which affects the rock-breaking efficiency. Therefore, the adsorption combustion agent package 7 is prepared into several mutually connected and independent adsorption combustion agent packages 7, as shown in the following examples.

[0035] Example 4 The fracturing and rock-breaking tube of this example specifically includes the following steps: Step 1, weigh 5 of the adsorption combustion agent prepared above, as Figure 3 and Figure 4As shown, the adsorption combustion agent 5 is encapsulated into a number of mutually connected and independent adsorption combustion agent packages 7 by using an adsorption combustion agent wrapping layer 6.

[0036] The adsorption combustion agent wrapping layer 6 is a non-woven fabric made of wood pulp composite fiber material, viscose fiber material or polypropylene fiber material, and has good hygroscopicity. The weight per square meter of the adsorption combustion agent wrapping layer 6 is 10 grams to 30 grams, and the maximum pore size of the adsorption combustion agent wrapping layer 6 is not greater than the size of the minimum particle diameter of the adsorption combustion agent 5.

[0037] Furthermore, the encapsulation specifically includes heat sealing, adhesive sealing or stitching.

[0038] Step 2, the adsorption combustion agent packages 7 are made into a biomass granular charcoal-type adsorption combustion agent roll 8 in a rolled form; The rolling process is specifically to select an industrial-grade winding machine with automatic tension control and winding functions, equipped with adjustable guide rollers, pressing rollers and fixed clamp devices. Place the positioning bracket at the starting end of the conveyor belt, neatly arrange the mutually connected and independent adsorption combustion agent packages 7 in the positioning bracket in turn, ensuring that the adsorption combustion agent packages 7 are tightly connected and have the same arrangement direction. When the adsorption combustion agent packages 7 are conveyed forward by the conveyor belt for a certain distance, use the fixed clamp device to fix the foremost adsorption combustion agent package 7 on the winding roller.

[0039] The winding roller starts to wind at a constant speed of 8 - 12 r / min, and at the same time, the winding tension is adjusted in real time through the tension control system, and the tension is maintained at 2 - 18 N to ensure that the adsorption combustion agent packages 7 are tightly fitted during the winding process. During the winding process, at regular intervals, use bundling straps or elastic fixing ropes to perform circular bundling and fixing on the adsorption combustion agent package roll to form a biomass granular charcoal-type adsorption combustion agent roll 8, and the bundling strength should be appropriate so as not to damage the structure of the adsorption combustion agent package.

[0040] The formed biomass granular charcoal-type adsorption combustion agent roll 8 has a hollow structure at the center, and the hollow diameter is slightly larger than the diameter of the liquid inlet pipe 2.

[0041] Step 3, as Figure 5 、 Figure 6 and Figure 7 shown, the biomass granular charcoal-type adsorption combustion agent roll 8 is sleeved on the outside of the liquid inlet pipe 2, and then the biomass granular charcoal-type adsorption combustion agent roll 8 sleeved with the liquid inlet pipe 2 is loaded into the flexible outer membrane 1 to form a rock fracturing pipe.

[0042] As Figure 5 and Figure 6 shown, an electric ignition device 4 is also loaded in the rock fracturing pipe, and an exhaust pipe 3 is installed at the top of the rock fracturing pipe.

[0043] In the present invention, the mutually connected and independent adsorption combustion agent packages 7 are made into a biomass particle charcoal-type adsorption combustion agent roll 8 in a rolled manner and filled into the flexible outer membrane 1. The biomass particles after carbonization and activation treatment have a rich pore structure and a large specific surface area, can effectively adsorb liquid oxygen or pressurized high-purity oxygen, and at the same time enhance the blasting power and improve the rock-breaking effect.

[0044] Example 5 On the basis of the above Example 4, as Figure 8 shown, adsorption combustion agent packages 7 are made into a multi-sheet connected structure.

[0045] Example 6 On the basis of the above Example 4, as Figure 9 shown, adsorption combustion agent packages 7 are made into a single long strip with a mutually connected and independent structure.

[0046] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Biomass pellet carbon-based adsorption combustion agent, characterized in that, Specifically, it includes the following steps: Step 1: Select biomass raw materials and conduct pretreatment on the biomass raw materials; Step 2: Crush and granulate the pretreated biomass raw materials using mechanical equipment to obtain biomass pellets; Step 3: Carbonize and activate the biomass pellets to obtain an adsorption combustion agent (5).

2. The biomass particle carbon-based adsorption combustion agent according to claim 1, wherein In the said Step 1, the biomass raw materials include the roots, branches, leaves, vines, and straws of various plants; The pretreatment includes removing large impurities in the biomass raw materials and truncating the overly long biomass raw materials.

3. The biomass pellet carbon-based adsorption combustion agent according to claim 1, wherein In the said Step 2, the particle size of the biomass pellets is 1 mm to 4 mm.

4. The biomass pellet carbon-based adsorption combustion agent according to claim 1, wherein, In the said Step 3, the carbonization treatment is specifically to place the biomass pellets in a vacuum carbonization furnace or an inert gas protection furnace for heating and carbonization, with a heating rate of 5 °C / min to 10 °C / min. After heating to 400 °C to 600 °C, keep warm for 1 h to 2 h; The activation treatment is to soak the biomass pellets after carbonization treatment in an activator solution for 12 h to 24 h. After completion of soaking, take out the biomass pellets and transfer them to a cremation furnace. Pass in steam or carbon dioxide as the activation gas, and increase the temperature to 800 °C to 950 °C at a heating rate of 3 °C / min to 5 °C / min, and keep warm for 0.5 h to 1 h; wait for the temperature in the furnace to cool to room temperature, take out the biomass pellets, wash them with deionized water to obtain the adsorption combustion agent (5).

5. The biomass pellet carbon-based adsorption combustion agent according to claim 4, characterized in that, The activator solution is potassium hydroxide or phosphoric acid, and the mass ratio of the activator solution to the biomass pellets is 1 to 3:

1.

6. The biomass pellet carbon-based adsorption combustion agent according to claim 1, characterized in that, The particle size of the adsorption combustion agent (5) obtained in the said Step 3 is 0.5 mm to 2.5 mm, the specific surface area of the adsorption combustion agent (5) is not less than 200 ㎡ / g, and the calorific value of the adsorption combustion agent (5) is not lower than 18 MJ / kg.

7. The rock-breaking pipe for cracking, characterized in that, Prepared by using the biomass pellet carbon type adsorption combustion agent as described in any one of Claims 1 to 5, specifically including the following steps: Step 1: Weigh the adsorption combustion agent (5) prepared above, and use an adsorption combustion agent wrapping layer (6) to encapsulate the adsorption combustion agent (5) into a number of mutually connected and independent adsorption combustion agent packages (7); Step 2: Make the adsorption combustion agent packages (7) into a biomass pellet carbon type adsorption combustion agent roll (8) in a rolled form; Step 3: Put the biomass pellet carbon type adsorption combustion agent roll (8) outside the liquid inlet pipe (2), and then load the biomass pellet carbon type adsorption combustion agent roll (8) with the liquid inlet pipe (2) sleeved into a flexible outer sleeve film (1) to form a rock fracture pipe.

8. The rock fracturing pipe according to claim 7, wherein, In the said Step 1, the adsorption combustion agent wrapping layer (6) is a non-woven fabric made of wood pulp composite fiber material, viscose fiber material, or polypropylene fiber material; the gram weight per square meter of the adsorption combustion agent wrapping layer (6) is 10 g to 30 g; the maximum pore size of the adsorption combustion agent wrapping layer (6) is not larger than the size of the minimum particle size of the adsorption combustion agent (5).

9. The fracturing rock-breaking pipe according to claim 7, wherein In the said Step 1, the encapsulation specifically includes heat sealing, adhesive sealing, or thread stitching.

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