A curing process capable of preventing upper leaves from being stained

Abstract

The present application discloses a kind of baking process capable of preventing upper tobacco leaves from dusting, which is baked according to a process curve for upper tobacco leaves, wherein the baking includes a transition phase and a constant temperature phase, and the transition phase and the constant temperature phase are alternately performed. The present application can prevent upper tobacco leaves from dusting, which is conducive to improving the baking quality of upper tobacco leaves and increasing the income of tobacco farmers.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of baking process that can prevent upper tobacco leaves from being covered with dust, belongs to upper tobacco leaves baking technical field. BACKGROUND

[0002] After baking, the surface of tobacco leaves is a little bit fuzzy and gray, which is called dust covering.If the whole leaf is seriously gray, it is called gray face.Dust covering tobacco can be divided into light dust covering, moderate dust covering and heavy dust covering.Dust covering tobacco usually only appears on the front of tobacco leaves, because the front of tobacco leaves has less stomata than the back, and the moisture is not discharged smoothly, so it is easy to be affected.The upper leaves and thicker tobacco leaves are easy to produce dust covering, because the front has less stomata, and the wax layer is thicker, so the moisture discharge process is hindered.

[0003] Therefore, there is a need for a tobacco baking process that can prevent upper tobacco leaves from being covered with dust, which is beneficial to improve the baking quality of upper tobacco leaves and increase the income of tobacco farmers. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a baking process that can prevent upper tobacco leaves from being covered with dust, which can prevent upper tobacco leaves from being covered with dust, is beneficial to improve the baking quality of upper tobacco leaves and increase the income of tobacco farmers, and can overcome the shortcomings of the prior art.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] The present application discloses a baking process that can prevent upper tobacco leaves from being covered with dust, which is aimed at upper tobacco leaves and baked according to the process curve, wherein the baking includes a transition phase and a stable temperature phase, and the transition phase and the stable temperature phase are interleaved.The baking phase includes the following steps:

[0007] The first transition phase: the dry ball temperature and the wet ball temperature are both raised from the actual temperature to 35℃, and the transition time is 3-4 hours;

[0008] The first stable temperature phase: the dry ball temperature and the wet ball temperature are kept at 35℃, and the stable temperature is maintained for 6 hours;

[0009] The second transition phase: after the dry ball temperature and the wet ball temperature are kept at 35℃ for 6 hours, the fire is turned up, the dry ball temperature is raised from 35℃ to 38-40℃, the wet ball temperature is raised from 35℃ to 36-38℃ and kept, and the transition time is 3 hours;

[0010] The second stable temperature phase: stable temperature for 20-30 hours, until the low temperature layer of tobacco leaves reaches 8-9 layers of yellow;

[0011] The third transition phase: moisture is discharged and the temperature is lowered, the dry ball temperature is lowered from 38-40℃ to 32℃, and the transition time is 7-10 hours;

[0012] The third temperature stabilizing stage: temperature stabilizing for 20-25 hours until the tobacco leaves in the low temperature layer reach yellow pieces and white sinews;

[0013] The fourth transition stage: the dry ball temperature is raised from 32℃ to 38℃, and the transition time is 8 hours;

[0014] The fourth temperature stabilizing stage: the dry ball temperature is kept at 38℃, and temperature stabilizing for 20-25 hours until the tobacco leaves in the low temperature layer reach hooking and rolling edges;

[0015] The fifth transition stage: the dry ball temperature is raised from 38℃ to 40℃, and the transition time is 4-5 hours;

[0016] The fifth temperature stabilizing stage: the dry ball temperature is kept at 40℃, and temperature stabilizing for 6-8 hours;

[0017] The sixth transition stage: the dry ball temperature is raised from 40℃ to 48℃, and the transition time is 10 hours;

[0018] The sixth temperature stabilizing stage: the dry ball temperature is kept at 48℃, and the wet ball temperature is kept at 36℃, and temperature stabilizing for 20-30 hours until the tobacco leaves in the low temperature layer reach yellow pieces and white sinews;

[0019] The seventh transition stage: the dry ball temperature is raised from 48℃ to 54℃, and the transition time is 11-12 hours; and the wet ball temperature is raised from 36℃ to 38℃, and the transition time is 12-13 hours;

[0020] The seventh temperature stabilizing stage: the dry ball temperature is kept at 54℃, and the wet ball temperature is kept at 38℃, and temperature stabilizing for 6 hours;

[0021] The eighth transition stage: after the dry ball temperature is kept at 54℃ for 6 hours, the dry ball temperature is raised to 68℃, and the transition time is 5 hours; and after the wet ball temperature is kept at 38℃ for 6 hours, the wet ball temperature is raised to 39℃, and the transition time is 3 hours;

[0022] The eighth temperature stabilizing stage: the dry ball temperature is kept at 68℃, and the wet ball temperature is kept at 39℃ until the tobacco leaves are dried.

[0023] In the third transition stage, the wetting and turning plate is opened by one finger width, and the turning plate line is removed.

[0024] In the third temperature stabilizing stage and from the beginning of the third temperature stabilizing stage to the end of the sixth transition stage, the wetting and turning plate is fully opened, and the turning plate line is removed.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The present application is by in the first transition phase: the dry bulb temperature, the wet bulb temperature are all from the actual temperature to 35 DEG C, the transition time is 3-4 hours; the first temperature stabilization phase: the dry bulb temperature, the wet bulb temperature is kept at 35 DEG C, and the temperature stabilization is 6 hours; the second transition phase: the dry bulb temperature, the wet bulb temperature is kept at 35 DEG C for 6 hours, and then the fire is turned to heat, the dry bulb temperature is raised from 35 DEG C to 38-40 DEG C, the wet bulb temperature is raised from 35 DEG C to 36-38 DEG C and kept, and the transition time is 3 hours; the second temperature stabilization phase: temperature stabilization is 20-30 hours, until the low-temperature layer tobacco reaches 8-9 layers of yellow; the third transition phase: the dry bulb temperature is reduced from 38-40 DEG C to 32 DEG C, and the transition time is 7-10 hours; the third temperature stabilization phase: temperature stabilization is 20-25 hours, until the low-temperature layer tobacco reaches yellow sheet white muscle; the fourth transition phase: the dry bulb temperature is raised from 32 DEG C to 38 DEG C, and the transition time is 8 hours; the fourth temperature stabilization phase: the dry bulb temperature is kept at 38 DEG C, and the temperature stabilization is 20-25 hours, until the low-temperature layer tobacco reaches hooking and edge curling; the fifth transition phase: the dry bulb temperature is raised from 38 DEG C to 40 DEG C, and the transition time is 4-5 hours; the fifth temperature stabilization phase: the dry bulb temperature is kept at 40 DEG C, and the temperature stabilization is 6-8 hours; the sixth transition phase: the dry bulb temperature is raised from 40 DEG C to 48 DEG C, and the transition time is 10 hours; such a curing method, the principle is analyzed as follows: in the curing process, when the upper leaves picked are slow in water loss, it is more likely to form ash hanging smoke. Therefore, the water loss rate of the leaf is one of the most important factors affecting the formation of ash hanging smoke, and the content and thickness of the leaf cuticle wax affect the transpiration of the tobacco leaf. The higher the wax content of the tobacco leaf, the stronger the drought resistance, and the drought resistance of the tobacco leaf is usually proportional to the wax content of the leaf surface. The content and thickness of the wax layer of the leaf affect the loss of water in the leaf, thereby regulating the drought resistance of the plant. In the process of curing, with the increase of temperature, the secretion of wax in the tobacco leaf increases, further hindering the discharge of water, causing difficulty in water discharge during the curing process, and causing ash hanging phenomenon.

[0027] And through the method, in the first transition phase to the second temperature stabilization phase, although the temperature is raised, compared with the prior art, the degree of increase is low, although there is a case of promoting secretion of waxy, but the low amplitude of the secretion of waxy is small, which does not affect the moisture discharge, and then in the third transition phase to the sixth transition phase, the moisture is discharged and the temperature is reduced, the dry ball temperature is reduced from 38-40℃ to 32℃, and the transition time is 7-10 hours, so as to disrupt the mechanism of waxy secretion, consume the existing secreted waxy, and destroy the waxy secretion process in the fourth transition phase to the sixth transition phase, which does not affect the subsequent moisture discharge and color setting, so as to realize the reduction of the ash deposition, and the waxy secretion process also needs to consume its own energy, the low amplitude of the temperature rise in the first transition phase to the second temperature stabilization phase in cooperation with the low temperature stage in the third temperature stabilization phase, can also consume the energy in the leaf, reduce or weaken the energy or ability of waxy secretion in the fourth transition phase to the sixth transition phase, which is beneficial to reduce the ash deposition.

[0028] Other advantages, objects, and features of the present application will be better understood from the following specification taken in conjunction with the accompanying drawings. The objects and other advantages of the present application can be achieved and obtained by means of the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the present application in conjunction with the accompanying drawings, in which:

[0030] Figure 1 The present application is an upper tobacco leaf roasting process. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present application, and are not intended to limit the protection scope of the present application.

[0032] As Figure 1 shown, the present application discloses a roasting process capable of preventing ash deposition of upper tobacco leaves, which is for upper tobacco leaves and is roasted according to a process curve, wherein the roasting includes transition phases and temperature stabilization phases, the transition phases and the temperature stabilization phases are alternately performed, and the roasting phase includes the following steps:

[0033] The first transition phase: the dry ball temperature and the wet ball temperature are both raised from the actual temperature to 35℃, and the transition time is 3-4 hours;

[0034] The first temperature stabilization phase: the dry ball temperature and the wet ball temperature are maintained at 35℃, and the temperature stabilization time is 6 hours;

[0035] Second transition phase: after the dry ball temperature and the wet ball temperature are kept at 35℃ for 6 hours, the temperature is raised, the dry ball temperature is raised from 35℃ to 38-40℃, the wet ball temperature is raised from 35℃ to 36-38℃ and kept, and the transition time is 3 hours;

[0036] Second stable temperature phase: stable temperature for 20-30 hours until the low-temperature layer of tobacco leaves reaches 8-9 layers of yellow;

[0037] Third transition phase: dehumidification and temperature reduction, the dry ball temperature is reduced from 38-40℃ to 32℃, and the transition time is 7-10 hours; in the third transition phase, the wetting and turning are opened by one finger width, and the turning line is removed.

[0038] Third stable temperature phase: stable temperature for 20-25 hours until the low-temperature layer of tobacco leaves reaches yellow sheet and white tendon;

[0039] Fourth transition phase: the dry ball temperature is raised from 32℃ to 38℃, and the transition time is 8 hours;

[0040] Fourth stable temperature phase: keep the dry ball temperature at 38℃, stable temperature for 20-25 hours until the low-temperature layer of tobacco leaves reaches hooking and edge curling, and small roll cylinder;

[0041] Fifth transition phase: the dry ball temperature is raised from 38℃ to 40℃, and the transition time is 4-5 hours;

[0042] Fifth stable temperature phase: keep the dry ball temperature at 40℃, stable temperature for 6-8 hours;

[0043] Sixth transition phase: the dry ball temperature is raised from 40℃ to 48℃, and the transition time is 10 hours; from the early stage of the third stable temperature phase to the end of the sixth transition phase, the wetting and turning are fully opened, and the turning line is removed.

[0044] Sixth stable temperature phase: keep the dry ball temperature at 48℃ and the wet ball temperature at 36℃, stable temperature for 20-30 hours until the low-temperature layer of tobacco leaves reaches yellow sheet and white tendon;

[0045] Seventh transition phase: temperature rise, the dry ball temperature is raised from 48℃ to 54℃, and the transition time is 11-12 hours; the wet ball temperature is raised from 36℃ to 38℃, and the transition time is 12-13 hours;

[0046] Seventh stable temperature phase: keep the dry ball temperature at 54℃ and the wet ball temperature at 38℃, stable temperature for 6 hours;

[0047] Eighth transition phase: after the dry ball temperature is kept at 54℃ for 6 hours, it is raised to 68℃, and the transition time is 5 hours; after the wet ball temperature is kept at 38℃ for 6 hours, it is raised to 39℃, and the transition time is 3 hours;

[0048] Eighth stable temperature phase: keep the dry ball temperature at 68℃ and the wet ball temperature at 39℃ until drying.

[0049] After many experiments of the applicant, the effects of the flue-cured tobacco process compared with the existing conventional flue-cured tobacco process are as follows

[0050]

[0051] From the above table, the process compared with the conventional process, the proportion of the flue-cured tobacco far lower, is conducive to improve the income of tobacco farmers, but also conducive to improve the quality of flue-cured tobacco.

[0052] The above is only the preferred embodiment of the present application, not any form of the present application is limited, any not departing from the technical solution content of the present application, according to the technical essence of the present application to the above examples of any simple modification, equivalent change and modification, still belong to the scope of the present application technical scheme.

Claims

1. A curing process capable of preventing the upper leaves from being stained by dust, which is performed according to a process curve for the upper leaves, wherein, The baking includes transition stages and constant temperature stages, and the transition stages and constant temperature stages are alternately arranged, and the baking stage comprises the following steps: ​ The first transition stage: the dry ball temperature and the wet ball temperature are both increased from the actual temperature to 35 DEG C, and the transition time is 3-4 hours; The first constant temperature stage: the dry ball temperature and the wet ball temperature are kept at 35 DEG C, and the constant temperature time is 6 hours; The second transition stage: after the dry ball temperature and the wet ball temperature are kept at 35 DEG C for 6 hours, the fire is turned to increase the temperature, the dry ball temperature is increased from 35 DEG C to 38-40 DEG C, the wet ball temperature is increased from 35 DEG C to 36-38 DEG C and kept, and the transition time is 3 hours; The second constant temperature stage: the constant temperature time is 20-30 hours, until the low-temperature layer tobacco reaches 8-9 layers of yellow; The third transition stage: the dry ball temperature is decreased from 38-40 DEG C to 32 DEG C by discharging the moisture, and the transition time is 7-10 hours; The third constant temperature stage: the constant temperature time is 20-25 hours, until the low-temperature layer tobacco reaches yellow sheet and white tendon; The fourth transition stage: the dry ball temperature is increased from 32 DEG C to 38 DEG C, and the transition time is 8 hours; The fourth constant temperature stage: the dry ball temperature is kept at 38 DEG C, and the constant temperature time is 20-25 hours, until the low-temperature layer tobacco reaches hooking and edge curling; The fifth transition stage: the dry ball temperature is increased from 38 DEG C to 40 DEG C, and the transition time is 4-5 hours; The fifth constant temperature stage: the dry ball temperature is kept at 40 DEG C, and the constant temperature time is 6-8 hours; The sixth transition stage: the dry ball temperature is increased from 40 DEG C to 48 DEG C, and the transition time is 10 hours; The sixth constant temperature stage: the dry ball temperature is kept at 48 DEG C, and the wet ball temperature is kept at 36 DEG C, and the constant temperature time is 20-30 hours, until the low-temperature layer tobacco reaches yellow sheet and white tendon; The seventh transition stage: the dry ball temperature is increased from 48 DEG C to 54 DEG C, and the transition time is 11-12 hours; the wet ball temperature is increased from 36 DEG C to 38 DEG C, and the transition time is 12-13 hours; The seventh constant temperature stage: the dry ball temperature is kept at 54 DEG C, and the wet ball temperature is kept at 38 DEG C, and the constant temperature time is 6 hours; The eighth transition stage: after the dry ball temperature is kept at 54 DEG C for 6 hours, the dry ball temperature is increased from 54 DEG C to 68 DEG C, and the transition time is 5 hours; after the wet ball temperature is kept at 38 DEG C for 6 hours, the wet ball temperature is increased from 38 DEG C to 39 DEG C, and the transition time is 3 hours; The eighth constant temperature stage: the dry ball temperature is kept at 68 DEG C, and the wet ball temperature is kept at 39 DEG C, until the tobacco is baked.

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