A combustible gas recycling heat treatment furnace

Abstract

The invention relates to a flammable gas recycling thermal treatment furnace which comprises a furnace body, a combustion chamber provided with a combustor and an exhaust discharge pipe, wherein a furnace pipe is arranged in the furnace body, a furnace door is arranged at a feeding end, a closed annular hot air channel is formed between the inner wall of the furnace body and the outer wall of the furnace pipe, and a high-temperature glue gas inlet and a flue gas exhaust opening are formed on the furnace body; the combustion chamber comprises a housing which is internally provided with a combustion cavity, wherein an air jet hole and a gas inlet are formed on the housing, the combustion chamber is arranged out of the furnace body, the air jet hole is communicated with the high-temperature flue gas inlet on the furnace body, and the gas inlet of the exhaust gas discharge pipe is communicated with the inner side of the furnace pipe and the gas outlet of the exhaust gas discharge pipe extends into the combustion cavity through the gas inlet on the combustion chamber. According to the furnace provided by the invention, the combustion chamber and the furnace body are independently arranged, the exhaust gas discharge pipe introduces flammable gas generated in the furnace pipe into the combustion chamber to be combusted, and high-temperature flue gas generated by combustion is introduced into a hot air channel to supply energy for thermal treatment, so that energy sources are recycled, the energy consumption is reduced, and the furnace is energy-saving and environmental-friendly, easy to overhaul, simple in integral structure and low in cost.

Description

Technical field: [0001] The invention relates to the field of pyrolysis equipment, in particular to a combustible gas recycling heat treatment furnace. Background technique: [0002] Recently, due to the use of pyrolysis and carbonization to obtain clean or modified fuels, it can not only reduce the environmental pollution caused by direct combustion of solid fuels, but also make full use of the compounds of high economic value contained in solid fuels, which is energy-saving, environmentally friendly and rationally utilized. The broad meaning of resources has gradually been adopted by the industry. In recent years, on the basis of the traditional carbonization furnace, some improvements have been made to the carbonization furnace body, pyrolysis gas recovery and preheating utilization, and a carbonization furnace with a corresponding structure has been designed and developed to improve the carbonization efficiency and reduce the energy consumption of the system . [0003]...

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Problems solved by technology

[0004] In the actual use process, according to the applicant's report, although the carbonization furnace can better realize the recycling of the combustible gas produced in the carbonization process, it has certain problems: the carbonization furnace is equipped with both the carbonization chamber and the combustion chamber In the furnace body, and the two are connected through the carbonization gas outlet pipe. Due to the high temperature inside the furnace body, the carbonization gas outlet pipe is easy to age when placed in the furnace body for a long time, and has a short lifespan and is not easy to overhaul, posing a safety hazard. In addition, from It can be seen from the accompanying drawings that there are several small holes evenly distributed on one end of the carbonization gas outlet pipe placed in the carbonization tank. Although these small holes are beneficial to the output of combustible gases everywhere in the carbonization chamber, the combustible gas generated during the carbonization process usually contains A large amount of dust, particulate matter and oil gas will easily block the small holes, affecting the normal operation of the carbonization gas outlet pipe, and the energy recovery rate is low

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