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A method and device for preparing high-yield coke by combined roasting and carbonization

A yield and baking technology, applied in coke ovens, products, reagents, etc., can solve the problem of low coke yield and achieve the effect of increasing coke yield

Active Publication Date: 2021-11-09
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the existing coke preparation methods, the yield of coke is relatively low

Method used

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  • A method and device for preparing high-yield coke by combined roasting and carbonization
  • A method and device for preparing high-yield coke by combined roasting and carbonization

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Embodiment Construction

[0013] The present invention will be further explained below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, a device for preparing high-yield coke by combined roasting and carbonization includes a silo 1, a first screw feeder 2, a paddle-type roasting reactor 4, a second screw feeder 6, and a first air lock 7. Carbonization furnace 9, spiral slag discharger 11, slag cooler 12, second air locker 13, circulation fan 15, combustion chamber 17, fan 18, three-way valve 21, shell-and-tube heat exchanger 24, flow meter 26. Thermometer 27, gas mixing device 29, molten salt pump 37.

[0015] The outlet of the silo 1 is connected to the inlet 3 of the paddle-type roasting reactor 4 through the first screw feeder 2, and the outlet 5 of the paddle-type roasting reactor 4 is connected to the first lock through the second screw feeder 6 The gas device 7, the first gas locker 7 is connected to the inlet 8 of the carbonization furnace 9, the outlet 10 of ...

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Abstract

The invention discloses a method and device for preparing high-yield coke through combined roasting-carbonization. In the invention, biomass enters a paddle-type roasting reactor through a feeder for roasting, and the roasted biomass is fed into a carbonization furnace. Pyrolytic carbonization is carried out to obtain high-yield coke; the volatile matter obtained by pyrolytic carbonization is further completed in the combustion chamber, and the high-temperature flue gas after combustion is used as a heat source for heating molten salt. The present invention makes full use of the heat generated by pyrolysis and carbonization of biomass after volatile combustion to heat the molten salt, and the whole system does not require external heat supply; the biomass is heated and baked by molten salt, which can accurately control the baking temperature and utilize high temperature Flue gas contacts biomass for pyrolysis carbonization reaction, which can precisely control the temperature of pyrolysis carbonization; baking pretreatment promotes crosslinking and carbonization reaction of biomass, so that the coke yield of subsequent pyrolysis carbonization is significantly improved, realizing resources, energy and sustainable use of the environment.

Description

technical field [0001] The invention relates to a method and a device for preparing high-yield coke through combined baking and carbonization, in particular to the field of coke preparation. Background technique [0002] Biomass refers to all plants, microorganisms, animals that feed on plants and microorganisms, and the waste produced by them. It has the advantages of high volatile content, low sulfur and nitrogen content, and is the only alternative fossil energy that can be converted into gas and liquid. , Solid carbon-containing energy. At present, the resource utilization of biomass is mainly thermochemical conversion, which mainly includes four types: direct combustion, gasification, pyrolysis and liquefaction. Among them, because the biomass raw material contains high alkali metals and chlorine elements, the combustion process will cause problems such as high-temperature corrosion on the heating surface and ash deposition and slagging, which will reduce the service l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/00C10B57/10
CPCC10B53/00C10B57/10Y02P20/145
Inventor 张书平王俊逸张壹丰殷浩鑫张后雷朱曙光刘心志
Owner NANJING UNIV OF SCI & TECH
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