Oxygen-enriched combustion device for carbide slag cement production enterprise

Abstract

The utility model relates to an oxygen-enriched combustion device for an enterprise for producing cement from carbide slag, which comprises a pressure-equalizing collecting box, a pressure-stabilizing buffer tank is mounted on the pressure-equalizing collecting box through a pipeline I, a branch I and a branch II are arranged on the pipeline I, a manual butterfly valve I and an electric butterfly valve I are arranged on the branch I, and the manual butterfly valve I and the electric butterfly valve I are arranged on the branch II. The second branch is provided with a second manual butterfly valve and a second electric butterfly valve, the pressure stabilizing buffer tank is provided with an oxygen-enriched supercharger through a second pipeline, and the second pipeline is provided with a first pressure regulating valve. According to the scheme, through arrangement of a second spring, an insertion plate and other structures, insertion treatment can be conducted on an installation plate, a pressure gauge is made to be stable, installation and use of operators are facilitated, under the action of the pressure gauge, real-time monitoring treatment can be conducted on the air pressure in the pressure equalizing collection box, and through the deformation action of the first spring and the guide action of a guide rod, the pressure equalizing collection box is more stable. And the plug impacted by high-pressure gas can stably move, so that the circulating pipe is automatically opened and closed, and the follow-up gas circulation and use are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement production using carbide slag treatment, and in particular relates to an oxygen-enriched combustion device for a carbide slag cement production enterprise. Background Art

[0002] Calcium carbide slag, the waste residue from the hydrolysis of calcium carbide to produce acetylene gas, primarily consists of Ca(OH)2 and is commonly used in cement production. However, during storage, the residual calcium carbide absorbs moisture from the air, producing acetylene gas, posing an explosion risk. Therefore, nitrogen must be introduced to prevent the accumulation of acetylene gas. Traditionally, the desorption gas (containing approximately 30% oxygen) produced by the nitrogen generator is often directly discharged into the atmosphere, wasting resources and increasing environmental pollution.

[0003] In the utility model patent with patent authorization announcement number CN203024175U, an oxygen-enriched combustion-supporting device for a cement kiln is disclosed, which includes a first regulating valve, a flame arrester, a check valve, a fan, a mixer and a distributor. The first regulating valve, flame arrester and check valve are connected in sequence through pipelines; the fan and the check valve are both connected to the mixer, the mixer is connected to the distributor, and the distributor is respectively connected to the decomposition furnace and the rotary kiln.

[0004] However, the existing oxygen-enriched combustion devices of carbide slag cement enterprises also have certain shortcomings. The existing oxygen-enriched combustion devices of carbide slag cement enterprises mostly use bolt components and other methods to install the pressure gauge, and the use of bolts requires professional assembly tools, which is not convenient to use. In addition, the pressure equalizing collection box circulates the collected gas and mostly uses electric control valves and other components for opening and closing, which will undoubtedly cause energy waste. Summary of the Invention

[0005] The purpose of the utility model is to provide an oxygen-enriched combustion device for carbide slag cement production enterprises, which solves the problem that the existing oxygen-enriched combustion devices for carbide slag cement production enterprises mostly use bolt components and the like to install the pressure gauge, and the use of bolts requires professional assembly tools, which is inconvenient to use, and the pressure equalizing collection box circulates the collected gas and mostly uses components such as electric control valves for opening and closing, which undoubtedly causes energy waste.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an oxygen-enriched combustion device for a carbide slag cement production enterprise, comprising a pressure-equalizing collection box, the pressure-equalizing collection box is equipped with a pressure-stabilizing buffer tank through pipeline one, the pipeline one is provided with branch one and branch two, the branch one is provided with a manual butterfly valve one and an electric butterfly valve one, the branch two is provided with a manual butterfly valve two and an electric butterfly valve two, the pressure-stabilizing buffer tank is equipped with an oxygen-enriched booster through pipeline two, the pipeline two is provided with a pressure-regulating valve one, the oxygen-enriched booster is equipped with an oxygen-enriched gas storage tank through pipeline three, the pipeline three is provided with branch three, the branch three is provided with manual butterfly valve three and electric butterfly valve three, the oxygen-enriched booster The gas storage tank is equipped with an oxygen-enriched mixer 1 through pipeline 4, and an electric butterfly valve 4 is provided on the pipeline 4. The oxygen-enriched mixer 1 is equipped with a muffler 1 through pipeline 5, and an electric butterfly valve 5 is provided on the pipeline 5. The oxygen-enriched mixer 1 is equipped with a fan 1 through pipeline 6. The oxygen-enriched gas tank is equipped with an oxygen-enriched mixer 2 through pipeline 7, and an electric butterfly valve 6 is provided on the pipeline 7. The oxygen-enriched mixer 2 is equipped with a muffler 2 through pipeline 8, and an electric butterfly valve 7 is provided on the pipeline 8. The oxygen-enriched mixer 2 is equipped with a fan 2 through pipeline 9. The pressure equalizing collecting box is provided with a circulation mechanism inside, and the pressure equalizing collecting box is provided with a pressure measuring mechanism.

[0007] The principle of this utility model is as follows: the desorption gas waste gas generated after the nitrogen generator extracts nitrogen is collected by a pressure equalization collection box. After the desorption gas pressure stabilizes, it is transported through a pipeline to a pressure-stabilizing buffer tank for storage. A pressure regulating valve is installed on the desorption gas pipeline to stabilize the gas pressure to 10Kpa before it is sent to the oxygen-enriched booster. Under the action of the oxygen-enriched booster, the desorption gas is pressurized to increase its pressure.

[0008] Oxygen-enriched mixer 1 and oxygen-enriched mixer 2 are installed in front of the kiln head fan 1 and fan 2 of the cement rotary kiln, and are connected to the desorption gas pipeline. During production, the electric valves in front of oxygen-enriched mixer 1 and oxygen-enriched mixer 2 are opened, and the desorption gas directly passes through oxygen-enriched mixer 1 and oxygen-enriched mixer 2, and is sent to the multi-channel burner through kiln head fan 1 and fan 2 to mix with coal powder for oxygen-enriched combustion. When the desorption gas is insufficient, the pipeline valves connecting oxygen-enriched mixer 1 and oxygen-enriched mixer 2 to the air are opened to mix the desorption gas with the air. After sufficient mixing, the desorption gas is sent to the multi-channel burner through kiln head fan 1 and fan 2 to mix with coal powder for oxygen-enriched combustion.

[0009] By pulling the end piece upward to move the plug plate along the inner wall of the pressure equalizing collection box, the second spring is deformed, and then the pressure gauge is pushed through the pressure equalizing collection box, and the mounting plate is driven to be inserted into the pressure equalizing collection box. The end piece is then released to allow the second spring to recover its deformation, so as to push the plug plate through the mounting plate, and the mounting plate is plugged in. This stabilizes the pressure gauge, making it easier for operators to install and use it. Under the action of the pressure gauge, the gas pressure inside the pressure equalizing collection box can be monitored in real time.

[0010] When the pressure of the analytical gas inside the pressure-equalizing collection box is high, the plug moves under the impact of the gas, driving the guide rod to slide along the inner wall of the fixed plate. The spring deforms to ensure the stable movement of the plug, and eventually the plug is separated from the fixed plate, so that the flow tube is in an automatic flow state, thereby ensuring the normal circulation and use of the subsequent analytical gas.

[0011] The beneficial effects of the present invention are as follows: the present invention can insert the mounting plate by setting the spring 2, the plug plate and other structures, so that the pressure gauge is stable, which is convenient for the operator to install and use; under the action of the pressure gauge, the air pressure inside the pressure equalizing collection box can be monitored in real time; through the deformation action of the spring 1 and the guiding action of the guide rod, the plug impacted by the high-pressure gas can be stably moved, and then the circulation pipe can be automatically opened and closed, which is convenient for the subsequent circulation of gas;

[0012] Energy saving and consumption reduction: By introducing analytical gas for oxygen-enriched combustion, the combustion efficiency of the cement rotary kiln is improved, the unburned coal loss is reduced, and the clinker coal consumption is significantly reduced, achieving the goal of energy saving and consumption reduction.

[0013] Environmental protection and emission reduction: The desorption gas originally discharged as waste gas is effectively utilized to reduce emissions into the atmosphere and reduce environmental pollution. At the same time, oxygen-enriched combustion reduces the generation of harmful substances such as nitrogen oxides during the combustion process, which is beneficial to environmental protection.

[0014] Furthermore, the circulation mechanism includes a circulation pipe, the inner right side wall of the pressure equalizing collection box is fixedly connected to the circulation pipe, the inner wall of the circulation pipe is fixedly connected to a fixed disk, the inner wall of the circulation pipe and the right side of the fixed disk is fixedly connected to a fixed plate, the left end of the fixed plate is fixedly connected to a guide rod, the left end of the guide rod is fixedly connected to a plug, the plug is slidably connected to the fixed disk, and a spring 1 is provided on the outside of the guide rod. Through the deformation action of the spring 1 and the guiding action of the guide rod, the plug can be stably moved, thereby making the circulation pipe in an automatic circulation state.

[0015] Furthermore, one end of the spring one is welded to the fixing plate, and the other end of the spring one is fixedly connected to the plug. Through the setting of the spring one, the plug can be tightened for use.

[0016] Furthermore, the upper and lower sides of the plug are fixedly connected to limit blocks, and the limit blocks are in contact with the fixed disk. Through the setting of the limit blocks, the plug can be limited in use.

[0017] Furthermore, the pressure measuring mechanism includes a pressure gauge, the inner wall of the pressure equalizing collection box is slidably connected to the pressure gauge, the upper side of the pressure gauge is fixedly connected to a mounting plate, the mounting plate is slidably connected to the pressure equalizing collection box, the inner wall of the pressure equalizing collection box is slidably connected to an insert plate, the insert plate is slidably connected to the horizontal part of the mounting plate, the left end of the insert plate is fixedly connected to an end plate, the end plate is slidably connected to the pressure equalizing collection box, and a second spring is provided on the outer side of the insert plate. Through the arrangement of the insert plate, the second spring and other structures, the mounting plate can be limited, so that the pressure gauge is stable, which is convenient for the operator to quickly install and use.

[0018] Furthermore, the end piece is rectangular as a whole and is made of hard PVC material. The arrangement of the end piece facilitates the movement of the plug board by pulling it, and the hard PVC material has good durability and skin-friendliness.

[0019] Furthermore, one end of the second spring is fixedly connected to the end piece, and the other end of the second spring is welded to the pressure equalizing collection box. Through the setting of the second spring, the end piece can be connected for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the process of an oxygen-enriched combustion device for a carbide slag cement production enterprise according to an embodiment of the present invention;

[0021] Figure 2 The invention relates to an oxygen-enriched combustion device for a carbide slag cement production enterprise. Figure 1 Magnified view of the flow tube;

[0022] Figure 3 The invention relates to an oxygen-enriched combustion device for a carbide slag cement production enterprise. Figure 1 Enlarged view of the pressure gauge;

[0023] Figure 4 The invention relates to an oxygen-enriched combustion device for a carbide slag cement production enterprise. Figure 3 Enlarged view of point A. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The figure marks in the drawings of the specification include: pressure equalizing collection box 1, pressure stabilizing buffer tank 2, oxygen-enriched booster 3, oxygen-enriched gas storage tank 4, oxygen-enriched mixer 1 5, muffler 1 6, fan 1 7, oxygen-enriched mixer 2 8, muffler 2 9, fan 2 10, circulation mechanism 11, pressure measuring mechanism 12, circulation pipe 111, fixed plate 112, fixed plate 113, guide rod 114, plug 115, spring 116, limit block 117, pressure gauge 121, mounting plate 122, plug plate 123, end plate 124, spring 2 125.

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, this embodiment provides an oxygen-enriched combustion device for a carbide slag cement production enterprise, including a pressure-equalizing collection box 1, the pressure-equalizing collection box 1 is equipped with a pressure-stabilizing buffer tank 2 through a pipeline 1, a branch 1 and a branch 2 are provided on the pipeline 1, a manual butterfly valve 1 and an electric butterfly valve 1 are provided on the branch 1, a manual butterfly valve 2 and an electric butterfly valve 2 are provided on the branch 2, the pressure-stabilizing buffer tank 2 is equipped with an oxygen-enriched booster 3 through the pipeline 2, a pressure regulating valve 1 is provided on the pipeline 2, the oxygen-enriched booster 3 is equipped with an oxygen-enriched gas storage tank 4 through the pipeline 3, a branch 3 is provided on the pipeline 3, and a manual butterfly valve 3 is provided on the branch 3. And electric butterfly valve three, the oxygen-enriched gas tank 4 is installed with an oxygen-enriched mixer 1 5 through pipeline four, electric butterfly valve four is provided on pipeline four, the oxygen-enriched mixer 1 5 is installed with a muffler 1 6 through pipeline five, electric butterfly valve five is provided on pipeline five, the oxygen-enriched mixer 1 5 is installed with a fan 1 7 through pipeline six, the oxygen-enriched gas tank 4 is installed with an oxygen-enriched mixer 2 8 through pipeline seven, electric butterfly valve six is ​​provided on pipeline seven, the oxygen-enriched mixer 2 8 is installed with a muffler 2 9 through pipeline eight, electric butterfly valve seven is provided on pipeline eight, and the oxygen-enriched mixer 2 8 is installed with a fan 2 10 through pipeline nine.

[0027] like Figure 1 、 Figure 2 As shown, a circulation mechanism 11 is provided inside the pressure equalizing collection box 1, and the circulation mechanism 11 includes a circulation pipe 111. The inner right side wall of the pressure equalizing collection box 1 is fixedly connected with the circulation pipe 111, and the inner wall of the circulation pipe 111 is fixedly connected with a fixed disk 112. The inner wall of the circulation pipe 111 and the right side of the fixed disk 112 are fixedly connected with a fixed plate 113. The left end of the fixed plate 113 is fixedly connected with a guide rod 114, and the left end of the guide rod 114 is fixedly connected with a plug 115. The plug 115 is slidably connected to the fixed disk 112, and a spring 116 is provided on the outside of the guide rod 114. Through the deformation action of the spring 116 and the guiding action of the guide rod 114, the plug 115 can be stably moved, so that the circulation pipe 111 is in an automatic circulation state.

[0028] like Figure 1 、 Figure 3 、 Figure 4 As shown, one end of spring 116 is welded to the fixing plate 113, and the other end of spring 116 is fixedly connected to the plug 115. By setting the spring 116, the plug 115 can be tightened. The upper and lower sides of the plug 115 are fixedly connected with the limiting block 117, and the limiting block 117 is in contact with the fixed disk 112. By setting the limiting block 117, the plug 115 can be limited.

[0029] like Figure 1 、 Figure 3 、 Figure 4As shown, the pressure equalizing collection box 1 is provided with a pressure measuring mechanism 12, which includes a pressure gauge 121. The pressure gauge 121 is slidably connected to the inner wall of the pressure equalizing collection box 1, and the upper side of the pressure gauge 121 is fixedly connected to a mounting plate 122, which is slidably connected to the pressure equalizing collection box 1, and the inner wall of the pressure equalizing collection box 1 is slidably connected to an insert plate 123, which is slidably connected to the horizontal part of the mounting plate 122, and the left end of the insert plate 123 is fixedly connected to an end piece 124, which is slidably connected to the pressure equalizing collection box 1, and a spring 2 125 is provided on the outer side of the insert plate 123. Through the arrangement of the insert plate 123, the spring 2 125 and other structures, the mounting plate 122 can be limited, so that the pressure gauge 121 is stable, which is convenient for the operator to quickly install and use.

[0030] like Figure 1 、 Figure 3 、 Figure 4 As shown, the end piece 124 is rectangular as a whole and is made of hard PVC material. The setting of the end piece 124 makes it easy to pull the plug plate 123 to move, and the hard PVC material has good durability and skin-friendliness. One end of the spring 125 is fixedly connected to the end piece 124, and the other end of the spring 125 is welded to the pressure equalizing collection box 1. Through the setting of the spring 125, the end piece 124 can be connected and used.

[0031] The specific implementation process of the utility model is as follows: the desorption gas waste gas generated after the nitrogen generator extracts nitrogen is collected by the pressure equalization collection box 1. After the desorption gas pressure is stabilized, it is transported through a pipeline to the pressure stabilization buffer tank 2 for storage. A pressure regulating valve is installed on the desorption gas pipeline. After the gas pressure is stabilized at 10KPa, it is sent to the oxygen-enriched booster 3. Under the action of the oxygen-enriched booster 3, the desorption gas is pressurized to increase its pressure;

[0032] Oxygen-enriched mixer 15 and oxygen-enriched mixer 28 are installed in front of the kiln head fan 17 and fan 2 10 of the cement rotary kiln, and are connected to the desorption gas pipeline. During production, the electric valves in front of oxygen-enriched mixer 15 and oxygen-enriched mixer 28 are opened, and the desorption gas directly passes through oxygen-enriched mixer 15 and oxygen-enriched mixer 28, and is sent to the multi-channel burner via kiln head fan 17 and fan 2 10 to mix with pulverized coal for oxygen-enriched combustion. When the desorption gas is insufficient, the valves in the pipeline connecting oxygen-enriched mixer 15 and oxygen-enriched mixer 28 to the air are opened to allow the desorption gas to mix with the air. After sufficient mixing, the desorption gas is sent to the multi-channel burner via kiln head fan 17 and fan 2 10 to mix with the pulverized coal for oxygen-enriched combustion.

[0033] By pulling the end piece 124 upward to move the plug plate 123 along the inner wall of the pressure equalizing collection box 1, the second spring 125 is deformed, and then the pressure gauge 121 is pushed through the pressure equalizing collection box 1, and the mounting plate 122 is driven to be inserted into the pressure equalizing collection box 1. The end piece 124 is then released to allow the second spring 125 to recover its deformation, so as to push the plug plate 123 through the mounting plate 122, and the mounting plate 122 is plugged in. This stabilizes the pressure gauge 121, making it easier for the operator to install and use it. Under the action of the pressure gauge 121, the gas pressure inside the pressure equalizing collection box 1 can be monitored in real time.

[0034] When the pressure of the analytical gas inside the pressure-equalizing collection box 1 is high, the plug 115 moves under the impact of the gas, driving the guide rod 114 to slide along the inner wall of the fixed plate 113, and the spring 116 deforms to ensure the stable movement of the plug 115, and finally the plug 115 is separated from the fixed plate 112, so that the circulation tube 111 is in an automatic circulation state, so as to ensure the normal circulation and use of the subsequent analytical gas.

[0035] This solution, through the arrangement of the spring 2 125, the plug plate 123 and other structures, can be plugged into the mounting plate 122, so that the pressure gauge 121 is stable, which is convenient for the operator to install and use. Under the action of the pressure gauge 121, the air pressure inside the pressure equalizing collection box 1 can be monitored in real time. Through the deformation action of the spring 116 and the guiding action of the guide rod 114, the plug 115 impacted by the high-pressure gas can be stably moved, thereby automatically opening and closing the circulation pipe 111, which is convenient for the subsequent circulation of gas.

[0036] Energy saving and consumption reduction: By introducing analytical gas for oxygen-enriched combustion, the combustion efficiency of the cement rotary kiln is improved, the unburned coal loss is reduced, and the clinker coal consumption is significantly reduced, achieving the goal of energy saving and consumption reduction.

[0037] Environmental protection and emission reduction: The desorption gas originally discharged as waste gas is effectively utilized to reduce emissions into the atmosphere and reduce environmental pollution. At the same time, oxygen-enriched combustion reduces the generation of harmful substances such as nitrogen oxides during the combustion process, which is beneficial to environmental protection.

[0038] It should be noted that, in the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0039] The above is only an embodiment of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An oxygen-enriched combustion device for a carbide slag cement production enterprise, comprising a pressure-equalizing collection box, characterized in that: The pressure equalizing collection box is equipped with a pressure stabilizing buffer tank through pipeline one, branch one and branch two are provided on the pipeline one, manual butterfly valve one and electric butterfly valve one are provided on the branch one, manual butterfly valve two and electric butterfly valve two are provided on the branch two, the pressure stabilizing buffer tank is equipped with an oxygen-enriched booster through pipeline two, pressure regulating valve one is provided on the pipeline two, the oxygen-enriched booster is equipped with an oxygen-enriched gas storage tank through pipeline three, branch three is provided on the pipeline three, manual butterfly valve three and electric butterfly valve three are provided on the branch three, the oxygen-enriched gas storage tank is equipped with an oxygen-enriched mixer one through pipeline four, the pipeline An electric butterfly valve 4 is provided on line 4, the oxygen-enriched mixer 1 is installed with a muffler 1 through pipeline 5, the pipeline 5 is provided with an electric butterfly valve 5, the oxygen-enriched mixer 1 is installed with a fan 1 through pipeline 6, the oxygen-enriched gas tank is installed with an oxygen-enriched mixer 2 through pipeline 7, the pipeline 7 is provided with an electric butterfly valve 6, the oxygen-enriched mixer 2 is installed with a muffler 2 through pipeline 8, the pipeline 8 is provided with an electric butterfly valve 7, the oxygen-enriched mixer 2 is installed with a fan 2 through pipeline 9, the interior of the pressure equalizing collecting box is provided with a circulation mechanism, and the pressure equalizing collecting box is provided with a pressure measuring mechanism.

2. The oxygen-enriched combustion device for carbide slag cement production enterprises according to claim 1, characterized in that: The circulation mechanism includes a circulation pipe, the inner right side wall of the pressure equalizing collection box is fixedly connected to the circulation pipe, the inner wall of the circulation pipe is fixedly connected to a fixed disk, the inner wall of the circulation pipe and the right side of the fixed disk is fixedly connected to a fixed plate, the left end of the fixed plate is fixedly connected to a guide rod, the left end of the guide rod is fixedly connected to a plug, the plug is slidably connected to the fixed disk, and a spring is provided on the outside of the guide rod.

3. The oxygen-enriched combustion device for carbide slag cement production enterprises according to claim 2, characterized in that: One end of the spring 1 is welded to the fixing plate, and the other end of the spring 1 is fixedly connected to the plug.

4. The oxygen-enriched combustion device for carbide slag cement production enterprises according to claim 2, characterized in that: The upper and lower sides of the plug are fixedly connected to limit blocks, and the limit blocks are in contact with the fixed disk.

5. The oxygen-enriched combustion device for carbide slag cement production enterprises according to claim 1, characterized in that: The pressure measuring mechanism includes a pressure gauge, a pressure gauge is slidably connected to the inner wall of the pressure equalizing collection box, a mounting plate is fixedly connected to the upper side of the pressure gauge, the mounting plate is slidably connected to the pressure equalizing collection box, a plug plate is slidably connected to the inner wall of the pressure equalizing collection box, the plug plate is slidably connected to the horizontal part of the mounting plate, an end piece is fixedly connected to the left end of the plug plate, the end piece is slidably connected to the pressure equalizing collection box, and a second spring is provided on the outer side of the plug plate.

6. The oxygen-enriched combustion device for carbide slag cement production according to claim 5, characterized in that: The end piece is rectangular in shape and is made of hard PVC material.

7. The oxygen-enriched combustion device for carbide slag cement production according to claim 5, characterized in that: One end of the second spring is fixedly connected to the end plate, and the other end of the second spring is welded to the pressure equalizing collection box.

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