Quicklime stock bin cleaning system

Abstract

The utility model relates to the technical field of stock bin components, and provides a quick lime stock bin cleaning system which comprises a quick lime stock bin and a control system. The nitrogen source, the supercharger and the gas storage tank are sequentially arranged on the unblocking nitrogen working pipeline in the unblocking nitrogen conveying direction. The gas injection device is arranged on the unblocking nitrogen working pipeline and located behind the gas storage tank in the unblocking nitrogen conveying direction, and an injection part of the gas injection device penetrates through the bin wall of the quick lime bin so as to lead to the interior of the quick lime bin; the stock bin unblocking system can solve the problem that in the prior art, a stock bin unblocking device of a quick lime stock bin can cause deterioration of quick lime in the stock bin.

Description

Technical Field

[0001] The present application relates to the technical field of silo components, and more specifically, to a quicklime silo clearing system. Background Art

[0002] In the prior art, quicklime is used as a desulfurizer in the ironmaking furnace during the steelmaking process to remove sulfur from molten iron. It has a high alkalinity and strong alkalinity, and can react with sulfides to generate volatile hydrogen sulfide, thereby reducing the sulfur content in steel. Therefore, the role of quicklime is indispensable in the steelmaking process of the steel industry. The quicklime silo is generally a conical steel silo, which is large at the top and small at the bottom. The lower part is conical, large at the top and small at the bottom. The upper opening is for feeding and the lower opening is for discharging. The material falls from top to bottom by its own weight. When the falling material flows downward in the conical container, as the cross-sectional area of ​​the outlet becomes smaller, the extrusion formed by the material becomes larger and larger. The friction between the material and the silo wall during the falling process will also become larger and larger, and it is easy to form a large and deep cave arch foundation. After the cave arch foundation is formed, the volume becomes larger and larger, and eventually causes material blockage. The length of time the material is stored in the container, the air humidity, temperature, and the size of the friction coefficient of the inner wall of the container are all causes of material blockage.

[0003] The clearing device corresponding to the quicklime silo in the prior art acts on the blocking points such as the bonding layer and the hardened area by combining water and air. The sprayed working medium has a large water content, which causes the quicklime in the quicklime silo to react with water. Quicklime is a strong alkaline substance. When it comes into contact with water, it will react chemically to produce calcium hydroxide and release a large amount of heat. Once the quicklime reacts with water and deteriorates, it will seriously affect the quality of steelmaking and does not meet the requirements of the steelmaking process. Utility Model Content

[0004] The main purpose of the utility model is to provide a quicklime silo clearing system, aiming to solve the technical problem that the quicklime silo clearing device in the prior art may cause the quicklime in the silo to deteriorate.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a quicklime silo clearing system, which includes:

[0006] Quicklime silo;

[0007] A nitrogen working pipeline for clearing blockages and a nitrogen source, a booster and a gas storage tank sequentially arranged on the nitrogen working pipeline for clearing blockages along a nitrogen delivery direction for clearing blockages;

[0008] A gas injection device is arranged on the nitrogen working pipeline for clearing blockages and is located after the gas storage tank along the nitrogen conveying direction for clearing blockages. The injection portion of the gas injection device penetrates the silo wall of the quicklime silo to lead to the interior of the quicklime silo.

[0009] Furthermore, an air outlet is provided on the silo wall of the quicklime silo, and the quicklime silo clearing system also includes an air content detector, an oxygen source, an oxygen delivery pipeline and a proportional control valve. The air content detector is capable of at least detecting the nitrogen content in the air. The air content detector is arranged at the air outlet on the silo wall. The first end of the oxygen delivery pipeline is connected to the oxygen source, and the other end of the oxygen delivery pipeline is connected to the interior of the quicklime silo. The proportional control valve is arranged on the oxygen delivery pipeline.

[0010] Furthermore, the nitrogen source is a nitrogen generator.

[0011] Furthermore, the oxygen source is an oxygen generator.

[0012] Furthermore, the quicklime silo clearing system also includes a master controller, which is respectively connected to the control end of the gas injection device, the nitrogen generator, the oxygen generator, the booster air content detector and the proportional control valve signal.

[0013] Furthermore, the quicklime silo clearing system also includes a main control cabinet, a nitrogen generator cabinet, an oxygen generator cabinet and a booster cabinet, the main controller is arranged in the main control cabinet, the nitrogen generator is arranged in the nitrogen generator cabinet, the oxygen generator is arranged in the oxygen generator cabinet, and the booster is arranged in the booster cabinet.

[0014] Furthermore, the blockage-clearing nitrogen working pipeline includes a first pipeline, a second pipeline and a third pipeline, one end of the first pipeline is connected to the nitrogen source, the other end of the first pipeline is connected to the air inlet end of the supercharger, one end of the second pipeline is connected to the air outlet end of the supercharger, the other end of the second pipeline is connected to the air inlet of the gas storage tank, one end of the third pipeline is connected to the air outlet of the gas storage tank, and the gas injection device is connected to the third pipeline.

[0015] Furthermore, the quicklime silo clearing system includes a plurality of gas injection devices and a plurality of branch pipelines corresponding to the number of the plurality of gas injection devices, each of the gas injection devices is connected to the corresponding branch pipeline one by one, and each of the branch pipelines is connected to the clearing nitrogen working pipeline on the pipe section located after the gas storage tank along the clearing nitrogen conveying direction.

[0016] Further, the plurality of gas injection devices include a plurality of gas injection devices arranged at intervals in a direction surrounding the quicklime silo and a plurality of gas injection devices arranged at intervals in a height direction along the quicklime silo.

[0017] Furthermore, the gas injection device is a gas spray gun, and the injection portion of the gas injection device is a nozzle of the spray gun.

[0018] The beneficial effects of the quicklime silo clearing system provided in this application are:

[0019] Since the quicklime silo clearing system provided by the embodiment of the utility model includes a nitrogen source, a booster and a gas storage tank which are sequentially arranged on the clearing nitrogen working pipeline along the clearing nitrogen conveying direction, a gas injection device is arranged on the clearing nitrogen working pipeline and is located behind the gas storage tank along the clearing nitrogen conveying direction, and the injection part of the gas injection device penetrates the silo wall of the quicklime silo to lead to the interior of the quicklime silo, the quicklime silo clearing system can provide nitrogen through the nitrogen source, and the nitrogen is increased in nitrogen pressure after passing through the booster and enters the gas storage tank, and finally the high-pressure nitrogen is injected into the quicklime silo through the injection part of the gas injection device, directly acting on the blockage points such as the bonding layer and the compacted area of ​​the quicklime silo to clear the quicklime silo, the quicklime silo clearing system uses nitrogen as the clearing working medium to clear the silo instead of using a water-gas mixture as the clearing working medium to clear the silo, thereby avoiding the occurrence of the deterioration phenomenon caused by the reaction of quicklime and water in the quicklime silo due to the large water content of the injected clearing working medium.

[0020] In a further solution, since an air content detector is installed at the air outlet on the silo wall, the air content detector can at least detect the nitrogen content in the air, so the air composition at the air outlet can be detected in real time. Based on the preset nitrogen content threshold, the oxygen content in the silo is adjusted by controlling the opening or closing of the proportional control valve and the opening and closing size of the air. The air ratio adjusts the opening and closing size of the oxygen outlet proportional valve to make the air meet the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of a quicklime silo clearing system provided in one embodiment of the present application;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] The reference numerals in the above drawings are as follows:

[0025] 1- Gas injection device;

[0026] 2- Air content detector;

[0027] 3-Oxygen delivery pipeline;

[0028] 4-Proportional control valve;

[0029] 5- Main control cabinet;

[0030] 6-Nitrogen generator cabinet;

[0031] 7-Oxygen generator cabinet;

[0032] 8-Supercharger;

[0033] 9-First pipeline;

[0034] 10- Second pipeline;

[0035] 11- Third pipeline;

[0036] 12-Branch pipeline;

[0037] 13- Gas tank;

[0038] 100- quicklime silo;

[0039] 101-Air outlet. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0045] See also Figure 1 to Figure 2 The utility model embodiment provides a quicklime silo clearing system, which includes:

[0046] The quicklime silo 100 is used to store quicklime, but can also be used to store other suitable materials;

[0047] A nitrogen working pipeline for clearing blockage and a nitrogen source, a booster and a gas storage tank 13 arranged in sequence on the nitrogen working pipeline for clearing blockage along the nitrogen delivery direction for clearing blockage;

[0048] The gas injection device 1 is arranged on the nitrogen working pipeline for clearing blockage and is located after the gas storage tank 13 along the nitrogen conveying direction for clearing blockage. The injection part of the gas injection device 1 penetrates the silo wall of the quicklime silo 100 to lead to the interior of the quicklime silo 100.

[0049] Since the quicklime silo clearing system provided by the embodiment of the utility model includes a nitrogen source, a booster and a gas storage tank 13 which are sequentially arranged on the clearing nitrogen working pipeline along the clearing nitrogen delivery direction, the gas injection device 1 is arranged on the clearing nitrogen working pipeline and is located after the gas storage tank 13 along the clearing nitrogen delivery direction, and the injection part of the gas injection device 1 penetrates the silo wall of the quicklime silo 100 to lead to the interior of the quicklime silo 100, the quicklime silo clearing system can provide nitrogen through the nitrogen source, and the nitrogen is increased in pressure after passing through the booster. After the force is applied, the nitrogen enters the gas storage tank 13, and finally the high-pressure nitrogen is injected into the quicklime silo 100 through the injection part of the gas injection device 1, and directly acts on the blockage points such as the bonding layer and the compacted area of ​​the quicklime silo 100 to clear the blockage of the quicklime silo 100. The quicklime silo clearing system adopts nitrogen as the clearing working medium for the silo clearing instead of using a water-gas mixture as the clearing working medium for the silo clearing, thereby avoiding the high water content of the injected clearing working medium, which leads to the deterioration of the quicklime in the quicklime silo caused by the reaction of quicklime and water.

[0050] According to one embodiment of the utility model, an air outlet 101 is provided on the silo wall of the quicklime silo 100, and the air outlet 101 can be specifically located at the upper part of the silo wall of the quicklime silo 100. The quicklime silo cleaning system also includes an air content detector 2, an oxygen source, an oxygen delivery pipeline 3 and a proportional control valve 4. The air content detector 2 can at least detect the nitrogen content in the air. The air content detector 2 is arranged at the air outlet 101 on the silo wall. The first end of the oxygen delivery pipeline 3 is connected to the oxygen source, and the other end of the oxygen delivery pipeline 3 is connected to the interior of the quicklime silo 100. The proportional control valve 4 is arranged on the oxygen delivery pipeline 3.

[0051] See also Figure 2 In this embodiment, since an air content detector 2 (a known instrument) is arranged at the air outlet 101 on the silo wall, the air content detector 2 selected by the utility model should be able to at least detect the nitrogen content in the air, so the air composition at the air outlet 101 can be detected in real time. Based on the preset nitrogen content threshold, the proportional control valve 4 is controlled to be opened or closed and the opening and closing size of the air, the oxygen content in the silo is adjusted, and the air ratio adjusts the opening and closing size of the oxygen outlet proportional valve to make the air meet the standard.

[0052] A specific example is: when it is detected that the nitrogen content in the air is higher than 78% (preset nitrogen content threshold), the proportional control valve 4 is controlled to open and spray oxygen into the silo to stabilize the air composition within the range and eliminate the hidden danger of hypoxia and suffocation of surrounding workers. It can be understood that the preset nitrogen content threshold can be flexibly set as needed.

[0053] According to an embodiment of the utility model, the nitrogen source is a nitrogen generator, and the nitrogen generator adopts a known nitrogen generator, which refers to a device that uses air as a raw material and uses a physical method to separate oxygen and nitrogen therein to obtain nitrogen. Nitrogen generators used in industry can be divided into three types according to different classification methods, namely, cryogenic air separation method, molecular sieve air separation method (PSA) and membrane air separation method.

[0054] According to an embodiment of the present invention, the oxygen source is an oxygen generator, and the oxygen generator adopts a known oxygen generator.

[0055] According to one embodiment of the utility model, the quicklime silo clearing system also includes a master controller (such as an electronic computer, PLC, etc.), which is respectively connected to the control end of the gas injection device 1, the nitrogen generator, the oxygen generator, the booster, the air content detector 2 and the proportional control valve 4 by signal, so the master controller can obtain the data information of the air content detector 2, and control the gas injection device 1 nitrogen generator, oxygen generator, booster and proportional control valve 4 according to the data information or other operating instructions to perform corresponding work.

[0056] See also Figure 1According to one embodiment of the utility model, the quicklime silo clearing system also includes a main control cabinet 5, a nitrogen generator cabinet 6, an oxygen generator cabinet 7 and a booster cabinet 8, the main controller is arranged in the main control cabinet 5, the nitrogen generator is arranged in the nitrogen generator cabinet 6, the oxygen generator is arranged in the oxygen generator cabinet 7, and the booster is arranged in the booster cabinet 8.

[0057] In this embodiment, an operation panel (which may include at least one of a button panel and a touch panel) and a display screen may be provided on the main control cabinet 5 for command input and information acquisition, and the operation panel and the display screen are electrically connected to the main controller.

[0058] See also Figure 1 According to one embodiment of the utility model, the nitrogen working pipeline for clearing blockage includes a first pipeline 9, a second pipeline 10 and a third pipeline 11, one end of the first pipeline 9 is connected to the nitrogen source, the other end of the first pipeline 9 is connected to the air inlet end of the supercharger, one end of the second pipeline 10 is connected to the air outlet end of the supercharger, the other end of the second pipeline 10 is connected to the air inlet of the gas storage tank 13, one end of the third pipeline 11 is connected to the air outlet of the gas storage tank 13, and the gas injection device 1 is connected to the third pipeline 11.

[0059] See also Figure 2 According to one embodiment of the utility model, the quicklime silo clearing system includes a plurality of gas injection devices 1 and a plurality of branch pipelines 12 corresponding to the number of the plurality of gas injection devices 1, each gas injection device 1 is connected to a corresponding branch pipeline 12 in a one-to-one correspondence, each branch pipeline 12 is connected to a clearing nitrogen working pipeline on a pipe section located after the gas storage tank 13 along the clearing nitrogen delivery direction, and each branch pipeline 12 can be specifically connected to the third pipeline 11.

[0060] According to one embodiment of the utility model, the plurality of gas injection devices 1 include a plurality of gas injection devices 1 arranged at intervals in a direction surrounding the quicklime silo 100 and a plurality of gas injection devices 1 arranged at intervals in a height direction of the quicklime silo 100. This can facilitate clearing operations at different points in the quicklime silo 100 and improve the clearing capability.

[0061] According to an embodiment of the present invention, the gas injection device 1 is a gas spray gun, the injection part of the gas injection device 1 is the nozzle of the spray gun, and the gas spray gun can be provided with an electric control valve connected to the main controller signal to facilitate the control of the gas spray gun operation.

[0062] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A quicklime silo clearing system, characterized in that: include: Quicklime silo; A nitrogen working pipeline for clearing blockages and a nitrogen source, a booster and a gas storage tank sequentially arranged on the nitrogen working pipeline for clearing blockages along a nitrogen delivery direction for clearing blockages; A gas injection device is arranged on the nitrogen working pipeline for clearing blockages and is located after the gas storage tank along the nitrogen conveying direction for clearing blockages. The injection portion of the gas injection device penetrates the silo wall of the quicklime silo to lead to the interior of the quicklime silo.

2. The quicklime silo clearing system according to claim 1, characterized in that: An air outlet is arranged on the silo wall of the quicklime silo. The quicklime silo clearing system also includes an air content detector, an oxygen source, an oxygen delivery pipeline and a proportional control valve. The air content detector can at least detect the nitrogen content in the air. The air content detector is arranged at the air outlet on the silo wall. The first end of the oxygen delivery pipeline is connected to the oxygen source, and the other end of the oxygen delivery pipeline is connected to the interior of the quicklime silo. The proportional control valve is arranged on the oxygen delivery pipeline.

3. The quicklime silo clearing system according to claim 2, characterized in that: The nitrogen source is a nitrogen generator.

4. The quicklime silo clearing system according to claim 3, characterized in that: The oxygen source is an oxygen generator.

5. The quicklime silo clearing system according to claim 4, characterized in that: The quicklime silo clearing system also includes a master controller, which is respectively connected to the control end of the gas injection device, the nitrogen generator, the oxygen generator, the air content detector of the booster and the proportional control valve signal.

6. The quicklime silo clearing system according to claim 5, characterized in that: The quicklime silo clearing system also includes a main control cabinet, a nitrogen generator cabinet, an oxygen generator cabinet and a booster cabinet. The main controller is arranged in the main control cabinet, the nitrogen generator is arranged in the nitrogen generator cabinet, the oxygen generator is arranged in the oxygen generator cabinet, and the booster is arranged in the booster cabinet.

7. The quicklime silo clearing system according to any one of claims 1 to 6, characterized in that: The blockage-clearing nitrogen working pipeline includes a first pipeline, a second pipeline and a third pipeline, one end of the first pipeline is connected to the nitrogen source, the other end of the first pipeline is connected to the air inlet end of the supercharger, one end of the second pipeline is connected to the air outlet end of the supercharger, the other end of the second pipeline is connected to the air inlet of the gas storage tank, one end of the third pipeline is connected to the air outlet of the gas storage tank, and the gas injection device is connected to the third pipeline.

8. The quicklime silo clearing system according to any one of claims 1 to 6, characterized in that: The quicklime silo clearing system includes a plurality of gas injection devices and a plurality of branch pipelines corresponding to the number of the plurality of gas injection devices, each of the gas injection devices is connected to the corresponding branch pipeline in a one-to-one correspondence, and each of the branch pipelines is connected to the clearing nitrogen working pipeline on a pipe section located after the gas storage tank along the clearing nitrogen conveying direction.

9. The quicklime silo clearing system according to claim 8, characterized in that: The plurality of gas injection devices include a plurality of gas injection devices arranged at intervals in a direction surrounding the quicklime silo and a plurality of gas injection devices arranged at intervals in a height direction along the quicklime silo.

10. The quicklime silo clearing system according to any one of claims 1 to 6, characterized in that: The gas injection device is a gas spray gun, and the injection portion of the gas injection device is a nozzle of the spray gun.

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