Thermal treatment method for wood package materials and heat treatment furnace therefor

Abstract

The invention discloses a wooden package material thermal treatment method, which generates heat airflow via burning fuel to directly heat the wooden package material and adjust the air humidity synchronously. The invention also discloses a wooden package material thermal treatment furnace, which comprises a furnace body, a furnace door, and a furnace chamber, which is characterized in a fuel gas direct-heating system for burning fuel to generate airflow and guide into the furnace chamber; a furnace air forced cycle system for making the air uniformly flow inside the cycle air channel; and a humidity adjusting system for adjusting the internal air humidity. The invention via burning fuel generates heat airflow to directly heat the wooden package material to process eradication of pests, while said process has lower energy consumption, high heat efficiency, full automatic control, safe production, and reliable thermal treatment quality.

Description

technical field [0001] The invention relates to the technical field of heat treatment of wood packaging materials. Background technique [0002] Many countries have promulgated laws and regulations that stipulate that the wood packaging materials of imported goods must be quarantined and eliminated in the exporting country before shipment, using heat treatment and other methods, and the official animal and plant quarantine department of the exporting country will issue a certificate before the goods are allowed to leave the country. In March 2002, the Food and Agriculture Organization of the United Nations and the Secretariat of the International Plant Protection Convention approved and published the "International Standards for Phytosanitary Measures", which approved heat treatment (HT) as one of the quarantine and pest control methods for wood packaging. [0003] At present, the wood packaging heat treatment facilities approved by my country's entry-exit inspection and qua...

AI Technical Summary

Problems solved by technology

From the perspective of fuel combustion and heat transfer, the combustion products indirectly heat the indoor air through the steel pipe, and the thermal efficiency is low.

The biggest disadvantages are: the constant temperature and humidity treatment cannot realize automatic control; the indoor temperature uniformity is poor; the steel pipe must be overhauled frequently to prevent furnace smoke, furnace ash, sparks and incomplete combustion substances from entering the dry and hot air duct due to steel pipe damage

[0007] The above three heating methods all belong to the heating medium or combustion products to heat the air in the furnace through the radiator, which is an indirect heating method. Compared with the direct heating of the air in the furnace by the combustion products, the thermal efficiency is low; the configuration of the radiator increases the input cost and maintenance costs

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