Microwave heating type cracking furnace

Abstract

The invention relates to a microwave heating type cracking furnace for saving fuel resources in a production process. The invention adopts the technical scheme that the microwave heating type cracking furnace comprises a closed heating furnace body and a matched heating, pressure-maintaining and pyrolysis atmosphere maintaining mechanism and adopts a structure integrating pyrolysis, carbonization and activation. The structure comprises the furnace body and a sliding sealed cover plate which is arranged at the furnace top; the pyrolysis furnace body comprises a pyrolysis furnace chamber which uses a microwave heat source and an activation chamber arranged below the pyrolysis furnace chamber; wherein the pyrolysis furnace chamber is in a positive-pressure, nitrogen-atmosphere and movably sealing-type structure; the sliding sealed cover plate at the top of the pyrolysis furnace chamber is provided with a reverse V-shaped groove rail made of sealing material and a sealing-type friction pair; the reverse V-shaped groove rail is made of embedded sealing material; and the sealing-type friction pair slides with the matched reverse V-shaped groove rail arranged at the upper end of the pyrolysis furnace body. The structure comprises a shell-type stand, and a space in the furnace body is separated into the pyrolysis furnace chamber and the activation chamber by the match of a sealing separator II and the elastic sealing material arranged on a shell in match with a movable sealing matching part. The invention integrally realizes four-in-one operation and has simple structure and strong reliability.

Description

technical field [0001] The invention relates to a pyrolysis furnace using biomass as a raw material and an activation furnace for producing activated carbon, in particular to a microwave heating cracking furnace integrating a pyrolysis furnace, a carbonization furnace and an activation furnace. Background technique [0002] Conventional fossil energy such as coal, oil, and natural gas are non-renewable resources with limited reserves. With the development of the economy, the demand for energy is increasing, resulting in the high price of conventional non-renewable energy, and energy shortage and environmental pollution have become global problems. Biomass is the only renewable resource that can be directly stored and transported. It has low cost, rich resources, local materials, and remarkable comprehensive benefits. It is a promising renewable resource and has received more and more countries' attention. However, compared with conventional energy, biomass has the characte...

AI Technical Summary

Problems solved by technology

Some existing dry distillation equipment for carbon production either require large investment and are not suitable for promotion, or the equipment is not fully functional and cannot comprehensively utilize the products after biomass dry distillation, thus causing energy waste and environmental pollution

[0003] The carbonization and activation integrated furnace for the production of activated carbon now uses coal or firewood to provide the heat required for the carbonization process, which has the following disadvantages: (1) High energy consumption, because activated carbon relies entirely on the combustion of high-quality coal to provide energy during the carbonization process. Influenced by factors such as incomplete combustion, slag discharge and exhaust, 30-35% of the additional energy is used for energy absorption in the reaction process

(2) During the carbonization process, due to the constraints of factors such as uneven heating and complex heating process, a large amount of liquid products such as tar and wood acetic acid are produced, resulting in a low recovery rate of solid carbon, generally less than 60%.

[0004] At present, the carbonization and activation integrated furnace for the production of activated carbon has poor sealing performance, and the control of the reaction temperature and the pressure of the reaction environment during the pyrolysis and activation process is not accurate enough, so that the reduction of carbon is not sufficient, and the production efficiency of activated carbon is relatively low.

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