Wood vinegar vapor condensation and dehydration treatment method and wood vinegar vapor condensation and dehydration treatment equipment

Abstract

The invention discloses a wood vinegar vapor condensation and dehydration treatment method and wood vinegar vapor condensation and dehydration treatment equipment. According to the method, wood vinegar vapor is condensed into liquid after full-contact heat exchange between the wood vinegar vapor and entrainer droplets, an entrainer and water vapor in wood vinegar are mixed to form azeotrope vapor, the azeotrope vapor simultaneously contains entrainer vapor and the water vapor in the wood vinegar and is sucked out by siphoning, and other components in the wood vinegar are collected in the form of liquid under the action of gravity. The equipment comprises a synchronous condensation and dehydration treatment device, an entrainer supply source, an azeotrope stratification device and a water tank, wherein the synchronous condensation and dehydration treatment device is provided with a vapor outlet, a spray unit and a vapor distribution pipe and is connected with the entrainer supply source; an azeotrope is separated by the azeotrope stratification device. Through the method and the equipment, the integration of condensation and dehydration processes of the wood vinegar vapor is realized.

Description

technical field [0001] The invention belongs to the technical field related to biomass pyrolysis treatment, and more specifically relates to a wood vinegar vapor condensation dehydration treatment method and equipment. Background technique [0002] Biomass, as the only renewable energy that can be directly converted into liquid fuel, has attracted worldwide attention due to its advantages such as huge output, storability and carbon cycle. It will gradually replace petroleum by converting biomass resources into clean high-grade liquid fuel. It can not only free us from over-reliance on limited oil resources, but also greatly reduce the emission of pollutants and greenhouse gases, which has significant economic and social benefits. [0003] Biomass pyrolysis oil production technology was proposed in the late 1970s. It rapidly heated the crushed biomass raw material to about 500°C to promote its pyrolysis and cracking of large molecules into small molecular gas products, and th...

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Problems solved by technology

[0004] Yet further research shows, generally speaking wood vinegar liquid water content is higher, is often as high as 80%-90%, can not be used directly, needs to be used for actual production after being dehydrated and concentrated, and often also has condensation efficiency low, wood Problems such as low quality and purity of vinegar liquid, but the existing dehydration method is complicated in operation process, which invisibly increases the production cost

Although many invention patents on bio-oil condensation have made creative work before, for example, CN201110308657.0 discloses a biomass pyrolysis steam condensation system, which uses a substance that does not mix with bio-oil as a coolant In order to facilitate subsequent separation, the problem of high water content after bio-oil condensation and collection has not been paid attention to and solved; in addition, CN201010195988.3 discloses a separation and condensation method of biomass cracked gas, wherein water flow is used to realize the separation and condensation of cracked gas. Rapid condensation, the condensed cracked gas is separated into gas-phase products and liquid-phase products, which effectively solves the problems of difficult control of the condensation process, high energy consumption, and poor economy in the separation process of biomass cracked gas products. The water flow is condensed, and the condensed wood vinegar also has the problem of high water content

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