Airflow circulating type bulk curing barn air energy heating and dehumidification system

Abstract

The invention discloses an airflow circulating type bulk curing barn air energy heating and dehumidification system. The system comprises a controller (1), a heating chamber (II), a dehumidification chamber (III), a smokebox (IV); the dehumidification chamber (III) is connected with the smokebox (IV) through a dehumidification air inlet (3-10), a dehumidification air outlet (3-11) is connected with a heating chamber air inlet (2-4) of the heating chamber (II), the heating chamber (II) is connected with the smokebox (IV) of the heating chamber air outlet (2-5), thereby forming an airflow circulating loop; the heating and dehumidification system is integrated with six working modes with different functions, airflow circulating loops and working processes; and the intelligent switching is performed through an embedded algorithm program based on a curing process curve in the controller between the modes. The system disclosed by the invention has the advantages that a heat pump heating anddehumidification system unit is used as a heat supply device and the tobacco leaf curing is performed by adopting multiple airflow circulating work modes, the energy utilization rate and the tobacco quality are improved, and the curing cycle and the cost a reduced.

Description

technical field [0001] The invention belongs to a tobacco leaf curing system, in particular to an air energy heating and dehumidifying system for a dense curing barn which adopts the air circulation method for tobacco leaf curing. Background technique [0002] Compared with the ordinary curing barn, the dense curing barn adopts the forced ventilation circulation system, which increases the amount of smoke loaded, saves time and labor, and the quality of the tobacco leaves after roasting is excellent, so it has been widely used in tobacco leaf curing at home and abroad. certain promotional applications. After entering the 21st century, with the development of science and technology, the research on dense baking rooms and related equipment and baking technology has become the main direction of researchers in this field. [0003] The time required for tobacco leaf curing is generally 6 to 10 days, so there must be sufficient heat supply during the curing process. The existing...

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Problems solved by technology

[0004] Whether it is a group of curing rooms or a single curing room used in the current tobacco leaf curing operation, the wet and hot water vapor in the curing room during the dehumidification period of the fixed color and the high-temperature air in the curing room during the dry tendon period are discharged from the outside of the curing room in a straight line. caused a large waste of energy

According to the research, if the dehumidification mode of air exhaust is used in the whole process of tobacco leaf curing, the heat lost is about 10% to 20% of the total energy consumption, and the highest even reaches 25%. If the dehumidification mode is used in the whole process, it will cause The water discharge rate is slow, and the tobacco leaf curing cycle is long, which indirectly increases the cost of tobacco leaf curing

In terms of control technology and baking process, although the existing intensive baking room has basically realized semi-automation and automation, it still depends on the length of time for temperature stabilization, heating speed, timing of dehumidification, timing of coal addition, and amount of coal during the baking process. Manual experience to control, and because the overall structure and baking process of the existing intensive baking room baking system are based on the dehumidification method of coal-fired heating and strong dehumidification, and because of the hysteresis and uncontrollability of coal-fired heating Due to the lack of research on control, the relatively advanced research has only achieved some results in automatic coal addition and automatic dehumidification, but still relatively in intelligent control, intelligent baking, and clustered baking. behind

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