Novel distributed tunnel kiln for baking bamboo salt
Through the design of distributed tunnel furnaces, the problems of high energy consumption and long production time of traditional furnaces are solved, and efficient energy saving and uniform temperature control of bamboo salt production are achieved, and product quality and output are improved.
Patent Information
- Application Number
- CN202422224197.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-11
AI Technical Summary
When producing bamboo salt in existing traditional furnaces, the energy consumption is high and time-consuming, and the temperature cannot be uniformly controlled, which affects product quality and output.
A distributed tunnel furnace is adopted to achieve continuous production of bamboo salt through the series design of preheating furnace chamber, firing furnace chamber and cooling furnace chamber, partition doors are used to form an automated assembly line, and combined with waste heat utilization and automated control.
It achieves high efficiency and energy saving in bamboo salt production, shortens production time, improves product quality and output, reduces manual operation risks, and achieves uniform temperature control.
Smart Images
Figure CN223091017U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bamboo salt, in particular to a new type of distributed tunnel furnace for baking bamboo salt. Background Art
[0002] Bamboo salt has a long history in China. It is prepared by adding bamboo, raw salt and some formulas and roasting them multiple times. Bamboo salt has the functions of replenishing vital energy, purifying blood, balancing acid-base, detoxifying and expelling toxins. Whether used externally or internally, it has an obvious effect on helping the human body recover. Bamboo salt is made by filling solar salt into three-year-old nan bamboo, sealing both ends with natural loess, using pine wood as fuel, and extracting the substance after high-temperature calcination at 800°C - 1300°C.
[0003] In daily work, it is found that in the existing traditional furnace for baking bamboo salt, when designing the furnace and producing bamboo salt, a discrete single furnace is always used. Each furnace is designed with a hearth, a stove chamber, and the raw materials are fed in and out through the same door. To bake a kiln cart of bamboo salt in one furnace, a series of technological processes need to be completed simultaneously, including cold cart entering the kiln, sealing the door and igniting, preheating and warming up, high-temperature calcination, stopping the fire and cooling down, and cold kiln discharging. Such a production process for baking bamboo salt has too high energy consumption, the waste heat is not fully utilized, and the time is too long. The whole process of baking bamboo salt in one furnace takes nearly 24 hours or even longer. At the same time, it is also necessary to push or pull the kiln cart loaded with bamboo salt into or out of the furnace manually. If the cooling time of the kiln cart is not enough and the temperature has not dropped to room temperature, especially in the hot summer, it may even scald the workers, and the operation is extremely inconvenient. Moreover, for the bamboo salt produced by this kind of furnace, the baking process cannot be monitored throughout the whole process, and the temperature distribution in the front, back, left, right, up and down of the whole furnace cavity is also uneven. As a result, the temperature near the combustion point of the stove is the highest, while the temperature in the place far from the combustion point of the stove is too low, resulting in the bamboo tube being only carbonized but not ashed in some places where the temperature is too low, thus affecting the quality of the bamboo salt product, or rather, the quality of the bamboo salt product cannot be accurately controlled, and at the same time, the output cannot be increased. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the disadvantages of high cost, high energy consumption and long time consumption in the production of bamboo salt by traditional furnaces in the prior art, and to propose a new type of distributed tunnel furnace for baking bamboo salt.
[0005] To achieve the above object, the utility model adopts the following technical solutions: A new type of distributed tunnel furnace for baking bamboo salt, comprising a furnace body. The inner wall of the furnace body is sequentially provided with a preheating furnace chamber, a firing furnace chamber, and a cooling furnace chamber. The preheating furnace chamber, the firing furnace chamber, and the cooling furnace chamber are interconnected and communicated in series in the furnace body. Four partition doors are arranged in the furnace body, and the four partition doors separate the preheating furnace chamber, the firing furnace chamber, and the cooling furnace chamber. A kiln car is arranged on the inner wall of the furnace body, and towing lanes are arranged on both sides of the furnace body. An exhaust gas treatment device is arranged on the surface of the furnace body. Through the above components, the preheating furnace chamber, the firing furnace chamber, and the cooling furnace chamber appear as a whole from the outside, but are distributed and interconnected and communicated in series inside the furnace body. They are respectively separated by four automatically lifting partition doors. The partition doors are heat-insulating doors or fire-insulating doors. The kiln car is sequentially dragged into the preheating furnace chamber, the firing furnace chamber, and the cooling furnace chamber by electric power to form a continuous automated production line. The waste heat discharged during the air circulation in the firing furnace chamber during operation is used to raise the temperature of the preheating furnace chamber, and its temperature is automatically controlled between 200°C and 300°C to complete the preheating of the overall bamboo salt kiln car. The cooling furnace chamber is cooled by natural air outside, and its temperature can be reduced to room temperature. When the temperature monitoring of the cooling furnace chamber shows that the internal temperature is close to the ambient temperature, the fully loaded and already baked bamboo salt can be dragged out of the furnace body.
[0006] Preferably, a furnace hearth is arranged in the firing furnace chamber. Through the above components, the furnace hearth in the firing furnace chamber is a spatial structure for combustion or heating, and pine wood can be used as fuel.
[0007] Preferably, a towing body is arranged on the towing lane, and a return lane is arranged between the two towing lanes. Through the above components, the towing body is used to drag the kiln car, and the return lane is mainly used for the kiln car to move between the two towing lanes.
[0008] Preferably, a loading position is arranged on one side of the towing lane close to the preheating furnace chamber, and an unloading position is arranged on one side of the towing lane close to the cooling furnace chamber. Through the above components, when the kiln car moves to the unloading position in the return lane, the baked bamboo salt can be unloaded. After the kiln car moves to the loading position, loading is carried out.
[0009] Preferably, the exhaust gas treatment device includes a spray tower, the spray tower is connected to the furnace body, a smoke exhaust fan is connected to one side of the spray tower, a smoke exhaust tower is connected to one side of the smoke exhaust fan, a water purification pool is arranged on one side of the spray tower, a water pump is installed on the surface of the water purification pool, and one end of the water pump is connected to the spray tower. Through the above components, the smoke exhaust fan can draw the smoke in the furnace body into the spray tower, the water pump cooperates with the water purification pool to supply water to the spray tower, and the spray tower sprays the smoke, and then the treated smoke is discharged through the smoke exhaust tower.
[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:
[0011] 1. In the present utility model, through this solution, the discrete process of baking bamboo salt is changed to a distributed process. The three discrete and coherent processes are unified in the overall furnace kiln. Partition doors are used to divide different stages, and the bamboo salt baking process is completed in different furnace kilns, forming an automated production line. According to the different requirements of bamboo salt for temperature and time, operations are carried out in different functional furnace kilns, which can save energy, shorten the production time, and can also make full use of the waste heat of the firing furnace chamber and the cooling furnace chamber, continuously providing it to the preheating furnace chamber. The produced bamboo salt products have better quality and higher output, enabling the furnace kiln to achieve the effects of high efficiency, energy conservation, and no pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic plan view of a new type of distributed tunnel furnace kiln for baking bamboo salt proposed by the present utility model;
[0013] Figure 2 is a schematic side view of a new type of distributed tunnel furnace kiln for baking bamboo salt proposed by the present utility model;
[0014] Figure 3 is a schematic sectional view of a new type of distributed tunnel furnace kiln for baking bamboo salt proposed by the present utility model;
[0015] Figure 4 is a calcination curve graph of a new type of distributed tunnel furnace kiln for baking bamboo salt proposed by the present utility model.
[0016] LEGEND DESCRIPTION:
[0017] 1. Furnace kiln body; 101. Cooling furnace chamber; 102. Firing furnace chamber; 103. Preheating furnace chamber; 2. Kiln car; 3. Partition door; 4. Exhaust gas treatment device; 401. Spray tower; 402. Exhaust smoke fan; 403. Exhaust smoke tower; 404. Water pump; 405. Clean water pool; 5. Towing lane; 6. Unloading position; 7. Return lane; 8. Loading position; 9. Towing vehicle body. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Please refer to Figures 1-4, the present utility model provides a technical solution: a new type of distributed tunnel furnace for baking bamboo salt, comprising a furnace body 1. The inner wall of the furnace body 1 is successively provided with a preheating furnace chamber 103, a firing furnace chamber 102, and a cooling furnace chamber 101. The preheating furnace chamber 103, the firing furnace chamber 102, and the cooling furnace chamber 101 are interconnected and communicated in series in the furnace body 1. Four partition doors 3 are arranged in the furnace body 1, and the four partition doors 3 separate the preheating furnace chamber 103, the firing furnace chamber 102, and the cooling furnace chamber 101. A kiln car 2 is arranged on the inner wall of the furnace body 1. Tractor lanes 5 are arranged on both sides of the furnace body 1. An exhaust gas treatment device 4 is arranged on the surface of the furnace body 1.
[0019] In this implementation scheme: The preheating furnace chamber 103, the firing furnace chamber 102, and the cooling furnace chamber 101 appear as a whole from the outside, but are distributed and interconnected in series inside the furnace body 1. They are separated by four automatically lifting partition doors 3 respectively. The partition doors 3 are heat-insulating doors or fire-insulating doors. The kiln car 2 is driven by electricity to enter the preheating furnace chamber 103, the firing furnace chamber 102, and the cooling furnace chamber 101 in sequence, forming a continuous automated production line. The waste heat discharged during the air circulation in the firing furnace chamber 102 during operation is used to increase the temperature of the preheating furnace chamber 103, and its temperature is automatically controlled between 200°C and 300°C to complete the preheating of the overall bamboo salt kiln car 2. The cooling furnace chamber 101 is cooled by external natural air, and its temperature can be reduced to room temperature. When the temperature monitoring of the cooling furnace chamber 101 shows that the internal temperature is close to the ambient temperature, the fully loaded and already baked bamboo salt can be towed out of the furnace body 1.
[0020] Specifically, a hearth is arranged in the firing furnace chamber 102.
[0021] In this implementation scheme: The hearth in the firing furnace chamber 102 is a space structure for combustion or heating, and pine wood can be used as fuel.
[0022] Specifically, a towing body 9 is arranged on the tractor lane 5, and a return lane 7 is arranged between the two tractor lanes 5. The towing body 9 is used to tow the kiln car 2, and the return lane 7 is mainly used for the kiln car 2 to move between the two tractor lanes 5.
[0023] Specifically, a loading position 8 is arranged on one side of the tractor lane 5 close to the preheating furnace chamber 103, and an unloading position 6 is arranged on one side of the tractor lane 5 close to the cooling furnace chamber 101. When the kiln car 2 moves to the unloading position 6 in the return lane 7, the baked bamboo salt can be unloaded. When the kiln car 2 moves to the loading position 8, loading is carried out.
[0024] Specifically, the waste gas treatment device 4 includes a spray tower 401. The spray tower 401 is connected to the furnace body 1. One side of the spray tower 401 is connected to a smoke exhaust fan 402. One side of the smoke exhaust fan 402 is connected to a smoke exhaust tower 403. A water purification tank 405 is arranged on one side of the spray tower 401. A water pump 404 is installed on the surface of the water purification tank 405. One end of the water pump 404 is connected to the spray tower 401.
[0025] In this implementation plan: The smoke exhaust fan 402 can draw the flue gas in the furnace body 1 into the spray tower 401. The water pump 404 cooperates with the water purification tank 405 to supply water to the spray tower 401. The spray tower 401 sprays the flue gas. Subsequently, the treated flue gas is discharged through the smoke exhaust tower 403.
[0026] Working principle: During use, they are arranged on the bamboo salt kiln car 2. A one-millimeter gap is left between the bamboo tubes for ventilation, fire passing, and convection. The temperature is increased by 200 °C / h per hour and raised to 800 °C within four hours, maintained for four to five hours, and each bamboo salt column on the kiln car 2 is roasted red and thoroughly roasted until the bamboo tubes are completely ashed, and the effective components of the bamboo tubes are fully incorporated into the bamboo salt. The kiln car 2 is electrically dragged into the preheating furnace cavity 103. For the newly started furnace body 1 for the first time, the first kiln car 2 is sent to the firing furnace cavity 102. After continuous production, a linear flow operation is formed. What is described in this article is the situation after the flow operation. When the kiln car 2 enters the preheating furnace cavity 103, the partition doors 3 at both ends of the preheating furnace cavity 103 are closed, and the temperature of the preheating furnace cavity 103 is raised to between 200 °C and 300 °C by using the waste heat of the firing furnace cavity 102 and the cooling furnace cavity 101. After preheating, the kiln car 2 is sent from the preheating furnace cavity 103 into the firing furnace cavity 102. After being baked in the firing furnace cavity 102 at 700 °C to 800 °C for 6 to 8 hours until the bamboo tubes are completely ashed, the firing furnace cavity 102 needs to stop burning when opening the partition doors at both ends of the furnace, but always maintain a high temperature state. When all the bamboo salt rods are roasted red and transparent, they can be taken out of the kiln. During the entire combustion period, the circulating waste heat is sent to the preheating furnace cavity 103 to heat the newly pushed bamboo salt kiln car 2 in the preheating furnace cavity 103. For the baked bamboo salt, after entering the cooling furnace cavity 101 through the kiln car 2, natural cold air outdoors can be sent into the cooling furnace cavity 101 to cool the cooling furnace cavity 101, and at the same time, its waste heat is sent to the preheating furnace cavity 103. The above steps are repeated eight times to obtain bamboo salt from the first roast to the eighth roast. At the same time, during the baking process, the flue gas generated in the furnace body 1 can be drawn into the spray tower 401 by the smoke exhaust fan 402. The water pump 404 cooperates with the water purification tank 405 to supply water to the spray tower 401. The spray tower 401 sprays the flue gas, and then the treated flue gas is discharged through the smoke exhaust tower 403.
Claims
1. A new type of distributed tunnel furnace for baking bamboo salt, comprising a furnace body (1), characterized in that: The inner wall of the furnace body (1) is successively provided with a preheating furnace chamber (103), a firing furnace chamber (102), and a cooling furnace chamber (101). The preheating furnace chamber (103), the firing furnace chamber (102), and the cooling furnace chamber (101) are interconnected and communicate with each other in the furnace body (1). Four partition doors (3) are arranged in the furnace body (1). The four partition doors (3) separate the preheating furnace chamber (103), the firing furnace chamber (102), and the cooling furnace chamber (101). A kiln car (2) is arranged on the inner wall of the furnace body (1). Drag lanes (5) are arranged on both sides of the furnace body (1). An exhaust gas treatment device (4) is arranged on the surface of the furnace body (1).
2. A novel distributed tunnel furnace for roasting bamboo salt according to claim 1, characterized in that: A hearth is arranged in the firing furnace chamber (102).
3. A novel distributed tunnel furnace for roasting bamboo salt according to claim 1, characterized in that: A drag body (9) is arranged on the drag lane (5). A return lane (7) is arranged between the two drag lanes (5).
4. A novel distributed tunnel furnace for baking bamboo salt according to claim 1, characterized in that: A loading position (8) is arranged on one side of the drag lane (5) close to the preheating furnace chamber (103), and an unloading position (6) is arranged on one side of the drag lane (5) close to the cooling furnace chamber (101).
5. A novel distributed tunnel furnace for baking bamboo salt according to claim 1, characterized in that: The exhaust gas treatment device (4) includes a spray tower (401). The spray tower (401) is connected to the furnace body (1). A smoke exhaust fan (402) is connected to one side of the spray tower (401). A smoke exhaust tower (403) is connected to one side of the smoke exhaust fan (402). A clean water pool (405) is arranged on one side of the spray tower (401). A water pump (404) is installed on the surface of the clean water pool (405). One end of the water pump (404) is connected to the spray tower (401).