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Biomass air-water vapour gasifier

A water vapor and gasifier technology, applied in the field of gasifiers, can solve the problems of energy consumption, high investment cost, low economic benefits, etc., and achieve the effect of self-heating balance

Active Publication Date: 2012-03-07
GUANGZHOU DEVOTION THERMAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The gasifier also uses oxygen as the gasification agent, which can produce medium heat value of 2500-4300Kcal / N m 3 The fuel gas has the advantages of simple preparation process, mature technology, and stable operation, but the source of oxygen needs to be equipped with an additional set of oxygen production equipment, and the investment cost is still high
If the gasifier uses high-temperature steam as the gasification agent, it can also produce a medium calorific value of 2400-3800Kcal / N m 3 However, because the pyrolysis temperature of biomass must be above 700°C to achieve good results, most of the energy needs to be consumed on water vapor, and the economic benefit is low

Method used

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Embodiment Construction

[0018] Such as figure 1 As shown, the gasifier of the present invention is a 0.5 ton / hour gasifier, and the fluidized bed is the best. The furnace body 1 of the gasifier is connected with a water steam pipeline assembly to provide high-temperature water vapor to the combustion chamber 2 in the furnace body 1 . The combustion chamber is a hollow cylindrical body. The wall body of the furnace body 1 (combustion chamber) offers three through-holes 10, and the through-holes 10 are circumferentially evenly arranged on the cross section of the furnace body 1, and the positions of the through-holes 10 are located in the combustion layer. The steam pipeline assembly is composed of a three-way steam pipeline 11 , a steam distributor 3 and a steam main pipe 4 . The steam distributor 3 is in the shape of a circle, and its inner circle side is connected with three steam pipelines 11, each steam pipeline 11 is also arranged uniformly around the circumference, and each steam pipeline 11 c...

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Abstract

The invention discloses a biomass air-water vapour gasifier. A biomass fuel performs pyrolysis-combustion and generates reactants in a combustor, which communicates with at least one steam pipeline. High-temperature steam is transferred into the combustor through the steam pipeline and performs a gasification reaction with the reactants. Due to the arrangement of the steam pipeline, the introduced steam is used as a gasification agent to participate in the gasification reaction so as to obtain medium heating value biomass gas by pyrolysis-combustion and gasification of the biomass fuel. The heating value is raised by 30-40% and the gas output rate is enhanced by 20%.

Description

technical field [0001] The invention relates to a gasification device, in particular to a gasifier for burning biomass fuel to generate biomass gas. Background technique [0002] Biomass gas is a green energy that can replace fossil energy. Its raw materials are biomass materials, such as straw, bagasse, rice straw, rice husk (bran), waste wood, bark, sawdust, wood chips, etc., through The gasification equipment can produce biomass gas after it is gasified at high temperature (above 750°C). [0003] The gasifier in the prior art generally uses air as the gasification agent due to its simple structure, and its investment cost is low, but the calorific value of the prepared gas is low, only 1000-1200Kcal / N m 3 , and the gas output rate is relatively low. The gasifier also uses oxygen as the gasification agent, which can produce medium heat value of 2500-4300Kcal / N m 3 The fuel gas has the advantages of simple preparation process, mature technology, and stable operation, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/20C10J3/48C10J3/72
Inventor 常厚春马革陈平缪麒张开辉陈燕芳刘安庆
Owner GUANGZHOU DEVOTION THERMAL TECH
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