Lime shaft kiln multi-hood adjustable air distribution energy-saving device
By installing a multi-air hood on the lime vertical kiln and setting an adjustable cold air valve, the problem of fire bias during the firing of the lime vertical kiln is solved, and the uniform regulation of the temperature field in the kiln and the optimization of energy utilization is achieved, which improves the The uniformity and production efficiency of lime kilns.
Patent Information
- Application Number
- CN202420647200.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The lime vertical kiln is prone to flamming in the process of firing lime. The main reason is that the uneven discharge or uneven air supply is uneven, which leads to the inability to effectively regulate the wind force, affecting the uniformity and quality of the lime kiln.
Design a lime vertical kiln multi-hood adjustable cloth wind energy-saving device. By installing multiple hoods on the wind tower and setting up an adjustable cold air valve on each hood, the temperature field of the kiln is achieved by using the circular multi-hood system. The uniform regulation of the cold air valve ensures dynamic balance of temperature by adjusting the wind power of the cold air valve.
The uniform control of the temperature field in the kiln is achieved, the ignition phenomenon is avoided, the uniformity and quality of the lime kiln is improved, energy waste is reduced, energy consumption in the lime calcination process is reduced, and production efficiency is improved.
Smart Images
Figure CN222182130U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lime kiln wind caps, in particular to a lime vertical kiln multi-wind cap adjustable air distribution energy-saving device. Background Art
[0002] Lime shaft kiln is one of the main equipment for burning lime, which mainly uses coke, coal gas, natural gas or heavy oil as fuel. In the process of burning lime, a large amount of nitrogen oxides, such as nitric oxide and nitrogen dioxide, will be produced. These nitrogen oxides will not only produce photochemical smog in the atmosphere, but also form acid rain, which is extremely harmful to agricultural ecosystems, aquatic ecosystems, buildings and human health.
[0003] Since most kilns are prone to uneven fire when calcining lime in vertical kilns, the main reason is uneven unloading or uneven air supply. One wind hood or one wind tower cannot control the surrounding wind force and cannot fundamentally adjust the air and fire. In this regard, the present application proposes an adjustable air supply system with eight wind hoods or multiple wind hoods. An enlarged pressure-reducing wind bin is installed after the main air duct enters the wind chamber. Then eight branch pipes are installed around the periphery to connect eight special rectangular wind hoods, which are installed on the M-shaped beam of the wind tower. Adjustable cold air valves are installed on the eight branch pipes. When in use, the corresponding cold air valve wind force is adjusted according to the uneven fire situation to achieve uniform firing. Utility Model Content
[0004] The utility model aims to provide a lime shaft kiln multi-wind cap adjustable air distribution energy-saving device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lime vertical kiln multi-hood adjustable air distribution energy-saving device, comprising a hood of a rice beam installed on a wind tower, an air inlet tower installed on the outside of one end of the hood, and an air inlet opening on the outside of one end of the air inlet tower, a refractory cavity is opened on the inner wall of the hood, an air inlet cavity is opened on the inner wall of the air inlet tower, and through holes are opened between the air inlet tower and the hood.
[0006] Furthermore, a hood top is installed at the top of the hood, and the hood top is a triangular structure, air outlet holes are opened on the inner walls at both ends of the refractory cavity, and multiple sets of material baffles are installed on the outer walls at both ends of the hood, and the material baffles are installed at 50 degrees.
[0007] Furthermore, a plurality of sets of vertical plates are installed between the baffle plates, and the air outlet holes are located below the baffle plates. The air outlet holes have a diameter of 14 mm and a center spacing of 50 mm.
[0008] Furthermore, a connecting pipe is installed on the inner wall of the air inlet, the connecting pipe is an L-shaped structure, and a cold air valve is installed on the other end of the connecting pipe, and a connecting pipe is installed on the other end of the cold air valve.
[0009] Furthermore, a decompression chamber is installed at the other end of the connecting pipe, an air inlet pipe is installed at the bottom end of the decompression chamber, and the decompression chamber is twice larger than the air inlet pipe.
[0010] Furthermore, the wind hood is made of 12# manganese steel plate or 14# steel plate, and the refractory cavity is 400mm, and eight wind hoods are arranged with the lime kiln body as the center.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The lime shaft kiln multi-hood adjustable air distribution energy-saving device can introduce cold air at multiple positions of the lime shaft kiln at the same time through the arrangement of the circumferential multi-hood, thereby achieving uniform regulation of the temperature field in the kiln, avoiding the phenomenon of partial fire caused by local excessively high or low temperature, and improving the uniformity and quality of lime kiln calcination. The adjustable air distribution function allows the wind force of the cold air valve of each hood to be accurately adjusted according to actual conditions, so that the temperature field in the lime shaft kiln can maintain a dynamic balance and achieve uniform firing.
[0013] At the same time, by precisely controlling the wind force of the cold air valve of each hood, it can be ensured that the heat in the kiln is fully utilized, reducing energy waste, and the uniform fire distribution also helps to reduce energy consumption during lime calcination and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the axial side of the utility model;
[0015] Figure 2 It is a schematic diagram of the hood of the utility model;
[0016] Figure 3 This is a bottom view of the wind cap of the utility model;
[0017] Figure 4 It is a schematic cross-sectional view of the hood of the utility model.
[0018] In the figure: 1. hood; 2. connecting pipe; 3. cold air valve; 4. connecting pipe; 5. pressure relief chamber; 6. air inlet pipe; 102. hood top; 103. air inlet tower; 104. air inlet; 105. material baffle plate; 106. vertical plate; 107. air outlet; 108. refractory cavity; 109. air inlet cavity; 110. through hole. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] The multi-hood adjustable air distribution energy-saving device for lime shaft kiln is mainly used in the shaft kiln calcination system of lime production enterprises. In these scenarios, the device achieves uniform regulation of the temperature field in the kiln by accurately controlling the wind force of the cold air valve to meet the different lime production needs. The temperature inside the lime shaft kiln is relatively high, usually above 1000℃. The device needs to be able to withstand high temperature environment and maintain stable operation. There are certain pressure fluctuations in the kiln. The device should have good pressure resistance to ensure the stable regulation of the cold air valve. Since the lime shaft kiln calcination process has high requirements for temperature control, the workshop should have certain temperature and pressure monitoring equipment to accurately control the operation of the device. Dust may be generated during lime production. The workshop should maintain good sanitary conditions and clean up dust regularly to ensure the normal operation of the device and extend its service life. When the device is working, cold air needs to be introduced for temperature regulation. Therefore, the workshop should have good ventilation conditions to ensure that the cold air can smoothly enter the kiln and effectively discharge the exhaust gas. The multi-hood adjustable air distribution energy-saving device for lime shaft kiln needs to be installed on the top or side of the lime shaft kiln, so the workshop should provide sufficient space for the installation and commissioning of the device. At the same time, the operator's activity space and safety passages must also be considered. The operation of the device depends on the power supply and control system. The workshop should provide a stable power supply and ensure the stability and reliability of the control system. In addition, the operation of the device must match the calcination process of the lime shaft kiln to achieve the best temperature control effect. The operator should be familiar with the working principle and operating procedures of the device, be able to accurately judge the fire bias and adjust the wind force of the cold air valve. During the operation, attention should be paid to observing the temperature changes in the kiln and the adjustment of the cold air valve, and timely adjustments should be made to ensure uniform ignition. The device should be equipped with safety protection measures, such as protective covers, safety valves, etc., to prevent accidental injuries during operation. Operators should wear protective equipment, such as protective glasses, gloves, etc., to ensure personal safety, and regularly inspect and maintain the device to ensure that it is in good working condition to prevent safety accidents caused by equipment failure.
[0021] In summary, the multi-hood adjustable air distribution energy-saving device of the lime shaft kiln needs to meet certain working conditions and working environment requirements during its application, and strictly abide by the operation and safety requirements to ensure its stable operation and optimal effect.
[0022] like Figure 1-Figure 4As shown, the utility model provides a technical solution: a lime vertical kiln multi-hood adjustable air distribution energy-saving device, including a hood 1 of a rice beam installed on a wind tower, an air inlet tower 103 is installed on the outer side of one end of the hood 1, and an air inlet 104 is opened on the outer side of one end of the air inlet tower 103, a refractory cavity 108 is opened on the inner wall of the hood 1, an air inlet cavity 109 is opened on the inner wall of the air inlet tower 103, and through holes 110 are opened between the air inlet tower 103 and the hood 1.
[0023] A hood top 102 is installed on the top of the hood 1, and the hood top 102 is a triangular structure. Air outlet holes 107 are opened on the inner walls of both ends of the refractory cavity 108, and multiple sets of baffle plates 105 are installed on the outer walls of both ends of the hood 1. The baffle plates 105 are installed at 50 degrees.
[0024] A plurality of vertical plates 106 are installed between the baffle plates 105 , and the air outlet holes 107 are located below the baffle plates 105 . The air outlet holes 107 have a diameter of 15 mm and a center distance of 50 mm.
[0025] A connecting pipe 2 is installed on the inner wall of the air inlet 104 . The connecting pipe 2 is an L-shaped structure. A cold air valve 3 is installed at the other end of the connecting pipe 2 . A connecting pipe 4 is installed at the other end of the cold air valve 3 .
[0026] A decompression chamber 5 is installed at the other end of the connecting pipe 4 , and an air inlet pipe 6 is installed at the bottom end of the decompression chamber 5 , and the decompression chamber 5 is twice larger than the air inlet pipe 6 .
[0027] The hood 1 is made of 12# manganese steel plate or 14# steel plate, and the refractory cavity 108 is 400mm, and eight hoods 1 are arranged with the lime kiln body as the center.
[0028] It should be noted that if Figure 1-Figure 4 As shown, in fact, the wind hood 1 is a rectangular shape, and there are eight of them distributed on the rice beams of the wind tower. Each wind hood 1 is provided with the same connecting pipe 2 and cold air valve 3. Since most kilns are prone to fire bias when calcining lime in a vertical kiln, the main reason is uneven unloading or uneven air supply. A wind hood 1 or a wind tower cannot control the surrounding wind force and cannot fundamentally adjust the wind and fire. When the lime vertical kiln needs to introduce cold air at multiple positions at the same time, the wind is sent into the decompression chamber 5 through the air inlet pipe 6. The decompression chamber 5 adjusts the wind force to the required pressure, and then the cold air valve 3 between the connecting pipe 4 and the connecting pipe 2 can adjust the corresponding cold air valve 3 wind force according to the fire bias situation to achieve uniform ignition.
[0029] The lime vertical kiln multi-hood adjustable air distribution energy-saving device, through the arrangement of the circumferential multi-hood 1, can introduce cold air at multiple positions of the lime vertical kiln at the same time, thereby achieving uniform regulation of the temperature field in the kiln, avoiding the phenomenon of partial fire caused by local excessively high or low temperature, and improving the uniformity and quality of lime kiln calcination. The adjustable air distribution function allows the wind force of the cold air valve 3 of each hood 1 to be accurately adjusted according to actual conditions, so that the temperature field in the lime vertical kiln can maintain a dynamic balance and achieve uniform calcination. At the same time, by accurately controlling the wind force of the cold air valve of each hood 1, it can be ensured that the heat in the kiln is fully utilized, reducing energy waste, and the uniform calcination distribution also helps to reduce energy consumption during lime calcination and improve production efficiency.
[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.
Claims
1. A multi-cap adjustable air distribution energy-saving device for a lime shaft kiln, characterized in that: The invention comprises a wind cap (1) mounted on a rice beam on a wind tower, an air inlet tower (103) being mounted on the outer side of one end of the wind cap (1), an air inlet port (104) being provided on the outer side of one end of the wind inlet tower (103), a fire-resistant cavity (108) being provided on the inner wall of the wind cap (1), an air inlet cavity (109) being provided on the inner wall of the wind inlet tower (103), and through holes (110) being provided between the wind inlet tower (103) and the wind cap (1).
2. The multi-air cap adjustable air distribution energy-saving device for a lime shaft kiln according to claim 1, characterized in that: A hood top (102) is installed at the top of the hood (1), and the hood top (102) is a triangular structure. Air outlet holes (107) are provided on the inner walls at both ends of the refractory cavity (108). Multiple groups of material blocking plates (105) are installed on the outer walls at both ends of the hood (1), and the material blocking plates (105) are installed at 50 degrees.
3. The multi-cap adjustable air distribution energy-saving device for a lime shaft kiln according to claim 2, characterized in that: A plurality of vertical plates (106) are installed between the baffle plates (105), and the air outlet holes (107) are located below the baffle plates (105). The air outlet holes (107) have a diameter of 15 mm and a center spacing of 50 mm.
4. The multi-air cap adjustable air distribution energy-saving device for a lime shaft kiln according to claim 1, characterized in that: A connecting pipe (2) is installed on the inner wall of the air inlet (104), the connecting pipe (2) is an L-shaped structure, a cold air valve (3) is installed at the other end of the connecting pipe (2), and a connecting pipe (4) is installed at the other end of the cold air valve (3).
5. The multi-cap adjustable air distribution energy-saving device for a lime shaft kiln according to claim 4 is characterized in that: A decompression chamber (5) is installed at the other end of the connecting pipe (4), an air inlet pipe (6) is installed at the bottom end of the decompression chamber (5), and the decompression chamber (5) is twice as large as the air inlet pipe (6).
6. The multi-air cap adjustable air distribution energy-saving device for a lime shaft kiln according to claim 1, characterized in that: The wind cap (1) is made of 12# manganese steel plate or 14# steel plate, and the refractory cavity (108) is 400 mm, and eight wind caps (1) are arranged with the lime kiln body as the center.