Automatic coaling type common curing barn curing process

Abstract

The invention discloses an automatic coaling type common curing barn curing process, and belongs to the technical field of tobacco leaf curing, according to the curing process, an automatic coaling type curing barn is divided into a curing barn lower part, a curing barn middle part and a curing barn upper part, and the curing processes are formulated for the curing barn lower part, the curing barn middle part and the curing barn upper part respectively; the baking processes of the lower part of the baking room, the middle part of the baking room and the upper part of the baking room are respectively divided into nine stages including a yellowing stage, a color fixing stage and a stem drying stage, and the nine steps include 11 temperature points; according to the flue-curing process, the quality of the flue-cured tobacco leaves can be improved, and the tobacco leaf output value of the flue-cured tobacco leaves is further increased.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco leaf baking, and in particular to a baking process in an automatic coal-feeding common baking room. Background Art

[0002] China has been using ordinary flue-cured tobacco houses since the beginning of flue-cured tobacco production, and its performance has been continuously improved since the 1950s. The tobacco loading room is built with bricks or mud, and the walls and roof are sealed and insulated. Cold and warm air inlets are installed on the wall foundation and the floor of the room, and exhaust windows are installed on the roof. The area of ​​the air inlet and exhaust window is determined by factors such as the moisture content of the tobacco leaves and the total amount of tobacco loaded. A small movable door is installed to facilitate the adjustment of the air intake and exhaust volume during the curing process. Generally, the flue-cured tobacco leaves that are dried each time are less than 100kg, which is a small flue-cured room; 100-300kg is a medium-sized room; and more than 300kg is a large flue-cured room. A small door for loading and unloading tobacco leaves is installed on the leeward wall of the flue-cured room, and a small window is opened on the gable on the side of the stove to observe the changes in tobacco leaves and the temperature and humidity in the flue-cured room. A small window for observing the safety of the fire pipe in the curing room is installed above the stove. A wooden beam for hanging tobacco is installed in the tobacco loading room. The bottom layer should be 1.7-2 meters above the ground. Generally, there are 5-6 layers. The distance between the layers should ensure that there is a 10cm gap between two layers of tobacco leaves when the longest tobacco leaves are hung. The heating equipment includes the stove, fire pipes in the tobacco loading room and the chimney built outside the tobacco loading room. It should be able to supply the heat required by the tobacco leaves during the curing process. And make the plane temperature in the tobacco curing room uniform. Generally, the grate area of ​​the stove in small and medium-sized tobacco curing rooms is 0.19-0.53m 2 The furnace wall thickness is 8-12cm, the chimney should be 0.5-1m higher than the roof ridge, and the lower opening area is 0.0576-0.1296m 2 , the outlet is 0.0256-0.04m 2 .

[0003] In some mountainous areas of Weifang, the site conditions are poor and large-scale cultivation of flue-cured tobacco is difficult to achieve. The cultivation is still mainly carried out by small households, with an average planting area of ​​5-20 mu per household. Tobacco leaves are still baked in old-fashioned ordinary curing houses. Compared with tobacco leaves baked in intensive curing houses, tobacco leaves baked in ordinary curing houses are soft, oily, and have a large dry-fresh ratio. Ordinary curing houses are suitable for the actual production of tobacco leaves in mountainous areas, and their advantages determine that they will continue to be used in the tobacco leaf baking process for a long time. In order to solve the disadvantages of ordinary curing houses, such as cumbersome operation, the need for tobacco farmers to add coal regularly, and long labor time, in order to solve the above problems, many curing houses are currently equipped with automatic coal feeding and control equipment, but their corresponding baking technology has not been followed up in time, and there is still a problem of poor quality of cured tobacco leaves, which will further reduce the tobacco leaf output value of cured tobacco leaves. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a baking process in an automatic coal-feeding common baking room, which can improve the quality of the baked tobacco leaves and further increase the tobacco leaf output value of the baked tobacco leaves.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: An automatic coal-feeding common baking room baking process, the automatic coal-feeding baking room is divided into three parts: the lower part of the baking room, the middle part of the baking room, and the upper part of the baking room, and baking processes are formulated for the three parts respectively; The baking process of the lower part, the middle part and the upper part of the baking room is divided into three stages: yellowing stage, color fixing stage and tendon drying stage, with a total of nine steps and 11 temperature points. During the yellowing stage of the baking process in the lower part of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 28°C and a wet-bulb temperature of 25°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 35°C and a wet-bulb temperature of 32°C, and the total heating time from ignition to the dry-bulb temperature of 35°C and the wet-bulb temperature of 32°C is controlled to be 7h, and the temperature is kept stable for 5h; then the temperature is raised at a heating rate of 1°C / h to Increase the temperature at a rate of 1℃ / h to a dry-bulb temperature of 38℃ and a wet-bulb temperature of 36℃, close the skylight completely, open one-third of the ground hole, and keep the temperature steady for 8 hours; then increase the temperature at a rate of 1℃ / h to a dry-bulb temperature of 40℃ and a wet-bulb temperature of 37℃, open one-third of the skylight and one-half of the ground hole, and keep the temperature steady for 12 hours; then increase the temperature at a rate of 1℃ / h to a dry-bulb temperature of 42℃ and a wet-bulb temperature of 36℃, open one-third of the skylight and open the ground hole completely, and keep the temperature steady for 15 hours; In the color fixing stage of the baking process in the lower part of the baking room, the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 45°C and a wet bulb temperature of 37°C, the skylight is opened by one-third, the ground hole is fully opened, and the temperature is kept stable for 10 hours; then the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 47°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 6 hours; then the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 50°C and a wet bulb temperature of 38°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 6 hours; then the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 54°C and a wet bulb temperature of 39°C, and the temperature is kept stable for 8 hours; During the drying stage of the baking process in the lower part of the baking room, open half of the skylight, close all the ground holes, and heat the temperature at a heating rate of ≥2°C / h to a dry-bulb temperature of 60°C and a wet-bulb temperature of 41°C, and keep the temperature steady for 6 hours; open one-third of the skylight, close all the ground holes, and heat the temperature at a heating rate of ≥2°C / h to a dry-bulb temperature of 68°C and a wet-bulb temperature of 42°C, and keep the temperature steady for 12 hours; During the yellowing stage of the baking process in the middle of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry bulb temperature of 28°C and a wet bulb temperature of 25°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry bulb temperature of 34°C and a wet bulb temperature of 31°C, and the total heating time from ignition to the dry bulb temperature of 34°C and the wet bulb temperature of 31°C is controlled to be 6 hours, and the temperature is stabilized for 4 hours; then the temperature is raised at a heating rate of 1°C / h to a dry bulb temperature of 34°C and a wet bulb temperature of 31°C. Raise the temperature at a rate of 1°C / h to a dry-bulb temperature of 38°C and a wet-bulb temperature of 36°C, close the skylight completely, open the ground hole by one-third, and keep the temperature steady for 12 hours; then raise the temperature at a rate of 1°C / h to a dry-bulb temperature of 40°C and a wet-bulb temperature of 38°C, open the skylight by one-third and the ground hole by one-half, and keep the temperature steady for 18 hours; open the skylight by one-third and then fully open it, then raise the temperature at a rate of 1°C / h to a dry-bulb temperature of 42°C and a wet-bulb temperature of 37°C, and keep the temperature steady for 18 hours; In the color fixing stage of the baking process in the middle of the baking room, the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 45°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 10 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 47°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 6 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 50°C and a wet bulb temperature of 38°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 6 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 54°C and a wet bulb temperature of 39°C, and the temperature is kept stable for 12 hours; During the drying stage of the baking process in the middle of the baking room, open half of the skylight, close all the ground holes, and heat the temperature at a heating rate of ≥1°C / h to a dry-bulb temperature of 60°C and a wet-bulb temperature of 40°C, and keep the temperature steady for 4 hours; open one-third of the skylight, close all the ground holes, and heat the temperature at a heating rate of ≥2°C / h to a dry-bulb temperature of 68°C and a wet-bulb temperature of 42°C, and keep the temperature steady for 8 hours; In the yellowing stage of the baking process of the upper part of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry bulb temperature of 28°C and a wet bulb temperature of 25°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry bulb temperature of 36°C and a wet bulb temperature of 32°C, and the total heating time from ignition to the dry bulb temperature of 36°C and the wet bulb temperature of 32°C is controlled to be 8 hours, and the temperature is stabilized for 4 hours; then the temperature is raised at a heating rate of 1°C / h Raise the temperature to 38℃ dry bulb temperature and 36℃ wet bulb temperature, close the skylight completely, open one-third of the ground hole, and keep the temperature steady for 12h; then raise the temperature at a rate of 1℃ / h to 40℃ dry bulb temperature and 38℃ wet bulb temperature, open one-third of the skylight and one-half of the ground hole, and keep the temperature steady for 18h; open one-third of the skylight and one-half of the ground hole, and then raise the temperature at a rate of 1℃ / h to 42℃ dry bulb temperature and 37℃ wet bulb temperature, and keep the temperature steady for 18h; In the color fixing stage of the baking process in the upper part of the baking room, the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 45°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 14 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 47°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 8 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 50°C and a wet bulb temperature of 38°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 6 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 54°C and a wet bulb temperature of 39°C, and the temperature is kept stable for 12 hours; During the drying stage of the baking process in the upper part of the baking room, open half of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 60°C and a wet-bulb temperature of 40°C at a heating rate of ≥1°C / h, and keep the temperature steady for 4 hours; open one-third of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 68°C and a wet-bulb temperature of 42°C at a heating rate of ≥2°C / h, and keep the temperature steady for 12 hours.

[0006] The automatic coal-feeding ordinary baking room is based on the ordinary baking room, and automatic feeding and temperature control equipment are added. When the temperature in the baking room is lower than the set temperature, the controller controls the feeding equipment to add coal, and the coal addition stops when the temperature reaches the set temperature; The automatic coal-feeding type baking barn is an ordinary airflow rising type baking barn equipped with an automatic coal-feeding system; The automatic coal-feeding baking room has 2 skylights and 8 ground holes.

[0007] Compared with the prior art, the present invention has the following beneficial effects: (1) The automatic coal-feeding common flue-curing barn baking process of the present invention converts tobacco farmers' baking experience into a standardized baking technology curve, thereby overcoming the drawbacks of common flue-curing barn baking, such as reliance on old experience and unstable baking quality, and reducing the difficulty of technology promotion; (2) The automatic coal-feeding ordinary flue-curing barn baking process of the present invention provides a systematic baking technology for ordinary flue-curing barns equipped with automatic coal-feeding equipment, achieving the goal of baking tobacco leaves to yellow, fragrant, and improving tobacco leaf quality, reducing the loss of bad tobacco and lowering the baking cost.

[0008] (3) The automatic coal-feeding common flue-curing barn baking process of the present invention transforms the common flue-curing barn tobacco leaf baking technology into a simple and easy-to-learn baking technology curve. When using the common flue-curing barn to bake tobacco leaves, it is no longer necessary to rely on the old experience of tobacco farmers. It can be widely promoted and applied in the tobacco leaf baking of the common flue-curing barn with airflow rise; (4) The automatic coal-feeding common baking barn baking process of the present invention has been demonstrated and promoted in the common baking barn concentrated areas such as Shitou, Jiushan and Songshan in Linqu County. 360 baking barns have been promoted and applied, covering an area of ​​4,200 mu, with a total of 2,520 baking times, and an average increase of 108.5 yuan per baking time, with a total increase of 273,400 yuan in output value; (5) According to the automatic coal-feeding common flue-curing barn baking process of the present invention, for the tobacco leaves cured in the lower part of the flue-curing barn, the proportion of high-quality tobacco is 0%, the proportion of medium-quality tobacco is 18.1%, and the average price is 19.4 yuan / kg; for the tobacco leaves cured in the middle part of the flue-curing barn, the proportion of high-quality tobacco is 60.91%, the proportion of medium-quality tobacco is 31.84%, and the average price is 28.49 yuan / kg; for the tobacco leaves cured in the upper part of the flue-curing barn, the proportion of high-quality tobacco is 50.4%, the proportion of medium-quality tobacco is 40.1%, and the average price is 20.7 yuan / kg. DETAILED DESCRIPTION

[0009] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described.

[0010] Example 1 An automatic coal-feeding common baking room baking process, specifically: The automatic coal-feeding ordinary baking room is based on the ordinary baking room, and automatic feeding and temperature control equipment are added. When the temperature in the baking room is lower than the set temperature, the controller controls the feeding equipment to add coal, and the coal addition stops when the temperature reaches the set temperature; The automatic coal-feeding curing barn is an airflow-rising common curing barn equipped with an automatic coal-feeding system. According to tobacco farmers' curing experience and the curing curve of intensive curing barns, the automatic coal-feeding curing barn is divided into three parts: the lower part of the curing barn, the middle part of the curing barn, and the upper part of the curing barn. Then, the common curing barn curing curves, i.e., curing processes, are formulated for the three parts, i.e., the lower part of the curing barn, the middle part of the curing barn, and the upper part of the curing barn. The automatic coal-feeding baking room has 2 skylights and 8 ground holes; The baking process of the lower part, the middle part and the upper part of the baking room is divided into three stages: yellowing stage, color fixing stage and tendon drying stage, with a total of nine steps, specifically including 11 temperature points; During the yellowing stage of the baking process in the lower part of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 28°C and a wet-bulb temperature of 25°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 35°C and a wet-bulb temperature of 32°C, and the total heating time from ignition to the dry-bulb temperature of 35°C and the wet-bulb temperature of 32°C is controlled to be 7h, and the temperature is kept stable for 5h; then the temperature is raised at a heating rate of 1°C / h to Increase the temperature at a rate of 1℃ / h to a dry-bulb temperature of 38℃ and a wet-bulb temperature of 36℃, close the skylight completely, open one-third of the ground hole, and keep the temperature steady for 8 hours; then increase the temperature at a rate of 1℃ / h to a dry-bulb temperature of 40℃ and a wet-bulb temperature of 37℃, open one-third of the skylight and one-half of the ground hole, and keep the temperature steady for 12 hours; then increase the temperature at a rate of 1℃ / h to a dry-bulb temperature of 42℃ and a wet-bulb temperature of 36℃, open one-third of the skylight and open the ground hole completely, and keep the temperature steady for 15 hours; In the color fixing stage of the baking process in the lower part of the baking room, the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 45°C and a wet bulb temperature of 37°C, the skylight is opened by one-third, the ground hole is fully opened, and the temperature is kept stable for 10 hours; then the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 47°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 6 hours; then the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 50°C and a wet bulb temperature of 38°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 6 hours; then the temperature is increased at a heating rate of 0.5°C / h to a dry bulb temperature of 54°C and a wet bulb temperature of 39°C, and the temperature is kept stable for 8 hours; During the drying stage of the baking process in the lower part of the baking room, open half of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 60°C and a wet-bulb temperature of 41°C at a heating rate of ≥2°C / h, and keep the temperature steady for 6 hours; open one-third of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 68°C and a wet-bulb temperature of 42°C at a heating rate of ≥2°C / h, and keep the temperature steady for 12 hours.

[0011] During the yellowing stage of the baking process in the middle of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry bulb temperature of 28°C and a wet bulb temperature of 25°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry bulb temperature of 34°C and a wet bulb temperature of 31°C, and the total heating time from ignition to the dry bulb temperature of 34°C and the wet bulb temperature of 31°C is controlled to be 6 hours, and the temperature is stabilized for 4 hours; then the temperature is raised at a heating rate of 1°C / h to a dry bulb temperature of 34°C and a wet bulb temperature of 31°C. Raise the temperature at a rate of 1°C / h to a dry-bulb temperature of 38°C and a wet-bulb temperature of 36°C, close the skylight completely, open the ground hole by one-third, and keep the temperature steady for 12 hours; then raise the temperature at a rate of 1°C / h to a dry-bulb temperature of 40°C and a wet-bulb temperature of 38°C, open the skylight by one-third and the ground hole by one-half, and keep the temperature steady for 18 hours; open the skylight by one-third and then fully open it, then raise the temperature at a rate of 1°C / h to a dry-bulb temperature of 42°C and a wet-bulb temperature of 37°C, and keep the temperature steady for 18 hours; In the color fixing stage of the baking process in the middle of the baking room, the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 45°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 10 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 47°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 6 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 50°C and a wet bulb temperature of 38°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 6 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 54°C and a wet bulb temperature of 39°C, and the temperature is kept stable for 12 hours; During the drying stage of the baking process in the middle part of the baking room, open half of the skylight, close all the ground holes, and heat up at a heating rate of ≥1°C / h to a dry-bulb temperature of 60°C and a wet-bulb temperature of 40°C, and keep the temperature steady for 4 hours; open one-third of the skylight, close all the ground holes, and heat up at a heating rate of ≥2°C / h to a dry-bulb temperature of 68°C and a wet-bulb temperature of 42°C, and keep the temperature steady for 8 hours.

[0012] In the yellowing stage of the baking process of the upper part of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry bulb temperature of 28°C and a wet bulb temperature of 25°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry bulb temperature of 36°C and a wet bulb temperature of 32°C, and the total heating time from ignition to the dry bulb temperature of 36°C and the wet bulb temperature of 32°C is controlled to be 8 hours, and the temperature is stabilized for 4 hours; then the temperature is raised at a heating rate of 1°C / h Raise the temperature to 38℃ dry bulb temperature and 36℃ wet bulb temperature, close the skylight completely, open one-third of the ground hole, and keep the temperature steady for 12h; then raise the temperature at a rate of 1℃ / h to 40℃ dry bulb temperature and 38℃ wet bulb temperature, open one-third of the skylight and one-half of the ground hole, and keep the temperature steady for 18h; open one-third of the skylight and one-half of the ground hole, and then raise the temperature at a rate of 1℃ / h to 42℃ dry bulb temperature and 37℃ wet bulb temperature, and keep the temperature steady for 18h; In the color fixing stage of the baking process in the upper part of the baking room, the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 45°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 14 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 47°C and a wet bulb temperature of 37°C, and the temperature is kept stable for 8 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 50°C and a wet bulb temperature of 38°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 6 hours; then the temperature is increased at a rate of 0.5°C / h to a dry bulb temperature of 54°C and a wet bulb temperature of 39°C, and the temperature is kept stable for 12 hours; During the drying stage of the baking process in the upper part of the baking room, open half of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 60°C and a wet-bulb temperature of 40°C at a heating rate of ≥1°C / h, and keep the temperature steady for 4 hours; open one-third of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 68°C and a wet-bulb temperature of 42°C at a heating rate of ≥2°C / h, and keep the temperature steady for 12 hours.

[0013] The specific baking process of the lower part of the baking room is shown in Table 1; the specific baking process of the middle part of the baking room is shown in Table 2; and the specific baking process of the upper part of the baking room is shown in Table 3.

[0014] Table 1

[0015] Table 2

[0016] Table 3

[0017] Comparative Example 1 A conventional baking process is adopted, based on Example 1, that is, an ordinary baking room with manual coal addition is adopted. The temperature control during the baking process relies on the experience of the baking operator, and there is no unified technical specification.

[0018] Performance Testing The output values ​​of tobacco leaves obtained in Example 1 and Comparative Example 1 were analyzed, wherein the output values ​​of tobacco leaves obtained in the lower part of the curing barn are shown in Table 4, the output values ​​of tobacco leaves obtained in the middle part of the curing barn are shown in Table 5, and the output values ​​of tobacco leaves obtained in the upper part of the curing barn are shown in Table 6.

[0019] Table 4 Table 5 Table 6

[0020] It can be seen from the above table that the tobacco leaf output values ​​of the lower part, middle part and upper part of the flue-cured tobacco in Example 1 are all higher than those in Comparative Example 1.

[0021] Unless otherwise specified, all percentages used in the present invention are by mass.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic coal-feeding common baking room baking process, characterized in that: The automatic coal-feeding baking room is divided into three parts: the lower part of the baking room, the middle part of the baking room, and the upper part of the baking room. The baking process is formulated for the lower part of the baking room, the middle part of the baking room, and the upper part of the baking room respectively; The baking processes of the lower part, the middle part and the upper part of the baking room are divided into three periods: yellowing stage, color fixing stage and tendon drying stage, with a total of nine steps and 11 temperature points.

2. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: During the yellowing stage of the baking process in the lower part of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 27-29°C and a wet-bulb temperature of 24-26°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 34-36°C and a wet-bulb temperature of 31-33°C, and the total heating time from ignition to the dry-bulb temperature of 34-36°C and the wet-bulb temperature of 31-33°C is controlled to be 7h, and the temperature is stabilized for 4.5-5.5h; then the temperature is raised at a heating rate of 0.9-1.1°C / h to a dry-bulb temperature of 37-39℃, wet-bulb temperature is 35-37℃, close the skylight completely, open one-third of the ground hole, and keep the temperature steady for 7.5-8.5h; then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 39-41℃, and a wet-bulb temperature of 36-38℃, open one-third of the skylight, and one-half of the ground hole, and keep the temperature steady for 11.5-12.5h; then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 41-43℃, and a wet-bulb temperature of 35-37℃, open one-third of the skylight, open the ground hole completely, and keep the temperature steady for 14.5-15.5h.

3. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: In the color fixing stage of the baking process in the lower part of the baking room, the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry-bulb temperature of 44-46°C and a wet-bulb temperature of 36-38°C, the skylight is opened by one-third, the ground hole is fully opened, and the temperature is kept stable for 9.5-10.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry-bulb temperature of 46-48°C and a wet-bulb temperature of 36-38°C, and the temperature is kept stable for 5.5-6.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry-bulb temperature of 49-51°C and a wet-bulb temperature of 37-39°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 5.5-6.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry-bulb temperature of 53-55°C and a wet-bulb temperature of 38-40°C, and the temperature is kept stable for 7.5-8.5 hours; During the drying stage of the baking process in the lower part of the baking room, open half of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 59-61°C and a wet-bulb temperature of 40-42°C at a heating rate of ≥2°C / h, and keep the temperature steady for 5.5-6.5h; open one-third of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 67-69°C and a wet-bulb temperature of 41-43°C at a heating rate of ≥2°C / h, and keep the temperature steady for 11.5-12.5h.

4. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: During the yellowing stage of the baking process in the middle of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry bulb temperature of 27-29°C and a wet bulb temperature of 24-26°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry bulb temperature of 33-35°C and a wet bulb temperature of 30-32°C, and the total heating time from ignition to the dry bulb temperature of 33-35°C and the wet bulb temperature of 30-32°C is controlled to be 5.5-6.5h, and the temperature is stabilized for 3.5-4.5h; then the temperature is raised at a heating rate of 0.9-1.1°C / h. The temperature should be kept stable for 11.5-12.5 hours when the dry-bulb temperature reaches 37-39℃ and the wet-bulb temperature reaches 35-37℃, then close the skylight completely and open one-third of the ground hole. Then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 39-41℃ and a wet-bulb temperature of 37-39℃, open one-third of the skylight and one-half of the ground hole. Then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 39-41℃ and a wet-bulb temperature of 37-39℃, open one-third of the skylight and one-half of the ground hole. Then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 41-43℃ and a wet-bulb temperature of 36-38℃. Then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 17.5-18.5 hours.

5. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: In the color fixing stage of the baking process in the middle of the baking room, the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 44-46°C and a wet bulb temperature of 36-38°C, and the temperature is kept stable for 9.5-10.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 46-48°C and a wet bulb temperature of 36-38°C, and the temperature is kept stable for 5.5-6.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 49-51°C and a wet bulb temperature of 37-39°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 5.5-6.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 53-55°C and a wet bulb temperature of 38-40°C, and the temperature is kept stable for 11.5-12.5 hours; During the drying stage of the baking process in the middle part of the baking room, open half of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 59-61°C and a wet-bulb temperature of 39-41°C at a heating rate of ≥1°C / h, and keep the temperature steady for 3.5-4.5 hours; open one-third of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 67-69°C and a wet-bulb temperature of 41-43°C at a heating rate of ≥2°C / h, and keep the temperature steady for 7.5-8.5 hours.

6. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: During the yellowing stage of the baking process in the upper part of the baking room, after ignition, the skylight is fully opened, the floor hole is fully closed, and the temperature is raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 27-29°C and a wet-bulb temperature of 24-26°C; then the temperature is further raised at a heating rate of ≥1°C / h to a dry-bulb temperature of 35-37°C and a wet-bulb temperature of 31-33°C, and the total heating time from ignition to the dry-bulb temperature of 35-37°C and the wet-bulb temperature of 31-33°C is controlled to be 7.5-8.5h, and the temperature is stabilized for 3.5-4.5h; then the temperature is raised at a heating rate of 0.9-1.1°C / h to a dry-bulb temperature of 1.5-2.

0. The temperature is 37-39℃ and the wet-bulb temperature is 35-37℃. Close the skylight completely, open one-third of the ground hole, and keep the temperature steady for 11.5-12.5h. Increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 39-41℃ and a wet-bulb temperature of 37-39℃. Open one-third of the skylight and one-half of the ground hole, and keep the temperature steady for 17.5-18.5h. Open one-third of the skylight and one-half of the ground hole, and then increase the temperature at a rate of 0.9-1.1℃ / h to a dry-bulb temperature of 41-43℃ and a wet-bulb temperature of 36-38℃, and keep the temperature steady for 17.5-18.5h.

7. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: In the color fixing stage of the baking process in the upper part of the baking room, the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 44-46°C and a wet bulb temperature of 36-38°C, and the temperature is kept stable for 13.5-14.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 46-48°C and a wet bulb temperature of 36-38°C, and the temperature is kept stable for 7.5-8.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 49-51°C and a wet bulb temperature of 37-39°C, the skylight is fully opened, the ground hole is fully opened, and the temperature is kept stable for 5.5-6.5 hours; then the temperature is increased at a heating rate of 0.5-0.6°C / h to a dry bulb temperature of 53-55°C and a wet bulb temperature of 38-40°C, and the temperature is kept stable for 11.5-12.5 hours; During the drying stage of the baking process in the upper part of the baking room, open half of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 59-61°C and a wet-bulb temperature of 39-41°C at a heating rate of ≥1°C / h, and keep the temperature steady for 3.5-4.5 hours; open one-third of the skylight, close all the ground holes, and heat up to a dry-bulb temperature of 67-69°C and a wet-bulb temperature of 41-43°C at a heating rate of ≥2°C / h, and keep the temperature steady for 11.5-12.5 hours.

8. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: The automatic coal-feeding ordinary baking room is based on an ordinary baking room, with automatic feeding and temperature control equipment added. When the temperature in the baking room is lower than the set temperature, the controller controls the feeding equipment to add coal, and the coal adding stops when the temperature reaches the set temperature.

9. The automatic coal-feeding common baking barn baking process according to claim 1 is characterized in that: The automatic coal-feeding type baking barn is an ordinary airflow rising type baking barn equipped with an automatic coal-feeding system.

10. The automatic coal-feeding common baking barn baking process according to claim 1, characterized in that: The automatic coal-feeding baking room has 2 skylights and 8 ground holes.

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