Heat exchange device and pyrolysis method for pyrolysis of solid carbonaceous material
A technology of heat exchange device and solid heat carrier, which is applied in the direction of biofuel, direct heating dry distillation, special form dry distillation, etc., can solve the problems of uneven temperature, slow material heating rate, long pyrolysis time, etc., and achieve enhanced heat transfer effect , improve quality, and avoid the effect of pyrolysis
Active Publication Date: 2015-08-12
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
However, due to the poor thermal conductivity of coal, the material heating rate is slow and the temperature is uneven in the indirect heat exchange coal pyrolysis process, which easily leads to problems such as long pyrolysis time, low tar yield, and high heavy oil content.
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[0038] Exemplary embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals designate the same or similar elements. The embodiments described below with reference to the figures are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0039] First of all, it needs to be pointed out that although the present invention describes the pyrolysis system and pyrolysis method with coal as a specific example, the pyrolysis system and pyrolysis method can also be applied to oil shale, dry sludge and biomass Pyrolysis of volatile solid carbonaceous materials (especially in the range of 0-12mm in particle size).
[0040] Such as figure 1 Shown in a, the heat exchange device for coal pyrolysis according to the present invention comprises:
[0041] The solid heat carrier channel 10, the solid heat c...
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Abstract
The invention relates to a heat exchange device for pyrolysis of a solid carbonic material. The device comprises a solid thermal carrier channel and a pyrolysis channel, wherein the solid thermal carrier flows in the solid thermal carrier channel in a fluidized state by using fluidized gas introduced from the lower part of the solid thermal carrier channel, a granular solid carbonic material containing volatile components is added from the upper part of the pyrolysis channel, passes through the pyrolysis channel in a fluidized state from top to bottom under gravity and undergoes pyrolytic reaction, the pyrolysis channel and the solid thermal carrier channel are separated by a heat conduction dividing wall, the solid thermal carrier and the solid carbonic material in the pyrolysis channel exchange heat through the heat conduction dividing wall, and the solid carbonic material is heated and undergoes pyrolytic reaction. The invention also relates to a pyrolysis method for the solid carbonic material.
Description
technical field [0001] The invention relates to the pyrolysis of solid carbonaceous materials, in particular to a heat exchange device and a pyrolysis method for the pyrolysis of granular solid carbonaceous materials. Background technique [0002] The generation of coal gas, tar and semi-coke through pyrolysis is a high-value utilization method for cascade utilization of low-rank coal resources to obtain high value-added products, with remarkable economic and social benefits. In recent years, oil shale has become the most potential non-traditional hydrocarbon resource recognized in the world. Because its oil content is generally 4% to 20%, and the highest can reach 30%, in addition to combustion for power generation, the main utilization method is carbonization and refining. After the oil shale is heated and carbonized, the kerogen contained in it decomposes to produce shale oil, carbonized gas and shale semi-coke; the shale oil can be used as fuel oil, and can also be furth...
Claims
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IPC IPC(8): C10B53/00C10B53/02C10B53/04C10B53/06C10B57/00C10B49/22
CPCY02E50/14Y02E50/10
Inventor 吕清刚朱治平于旷世高鸣向飞那永洁刘秀如孟广军
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI