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A device and method for fluidization and gasification of waste tires based on blast furnace slag waste heat utilization

A waste tire and fluidized bed gasification technology, which is applied in the field of waste tire fluidization gasification device, can solve the problems of poor quality and quality of pyrolysis oil products, low energy recovery rate of pyrolysis process, low heating rate of tire pyrolysis, etc. problems, to achieve the effect of improving heat and mass transfer efficiency, promoting mass transfer efficiency, and reducing viscosity

Active Publication Date: 2018-07-20
山东中科能人工环境有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Rotary kiln devices are mostly used in tire cracking devices, the heat and mass transfer efficiency is relatively low, the floor area is large and the processing efficiency is low under the same processing capacity;
[0005] (2) Tire pyrolysis mostly uses its own pyrolysis product—gas for external heating, relying on heat conduction and heat radiation on the wall of the reactor. and poorer quality;
[0006] (3) The added value of oil in waste tire pyrolysis products is the highest, but the oil yield of the existing tire pyrolysis process is generally around 40% to 45%, and the economic benefits are low;
[0007] (4) Most of the gas generated in the tire pyrolysis process is used for tire pyrolysis heating, resulting in low energy recovery rate of the pyrolysis process

Method used

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  • A device and method for fluidization and gasification of waste tires based on blast furnace slag waste heat utilization
  • A device and method for fluidization and gasification of waste tires based on blast furnace slag waste heat utilization
  • A device and method for fluidization and gasification of waste tires based on blast furnace slag waste heat utilization

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Embodiment 1

[0019] Such as figure 2 As shown in this example, a waste tire fluidization gasification device based on blast furnace slag waste heat utilization described in this embodiment, the device includes a slag granulator 1 and a fluidized bed gasification reactor 7, respectively for liquid slag granulation and Tire rubber powder fluidization gasification.

[0020] The top of the slag granulator 1 is equipped with a liquid blast furnace slag inlet 2, and the inside is provided with a granulation tray 3. The upper part of the granulation tray is equipped with a catalyst powder spraying device 4 and a water spraying device 5, and the bottom is provided with a granulated slag outlet 6.

[0021] The fluidized bed gasification reactor 7 is provided with a granulated slag inlet 8 and a gasification gas outlet 9 at the top, an air distributor 10 and a solid residue outlet 11 at the bottom, and a rubber powder injection pipe 12 on the surface of the air distributor.

[0022] The granulated...

Embodiment 2

[0030] The method for fluidizing and gasifying waste tires based on the utilization of blast furnace slag waste heat described in this embodiment is as follows:

[0031] (1) The liquid blast furnace slag discharged from the blast furnace is divided into multiple slag streams with a diameter of 10mm through the slag ditch, and enters the granulator for granulation. During the granulation process, the surface of the slag particles is sprayed according to the mass ratio of water to slag at 1:1 Water and spray catalyst powder on the surface of the slag according to 80% of the mass of the slag, so that the surface of the slag particles forms porous and high-temperature slag particles loaded with catalysts. The temperature of the slag is controlled at 900 ° C, and the particle size is between 3 and 4 mm before entering the fluidization device ;

[0032] (2) When the slag particles wrapped by the catalyst enter the fluidization device, the air compressor and the rubber powder feeder ...

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Abstract

The invention provides a junked-tire fluidized gasification device and a junked-tire fluidized gasification method based on blast furnace slag waste heat utilization. The device comprises a slag granulator and a fluidized-bed gasification reactor. After liquid blast furnace slags are granulated into high-temperature slag particles by the device and catalysts are loaded to surfaces of the high-temperature slag particles, fluidized heat exchange between the high-temperature slag particles and tire rubber powder is performed in the fluidized-bed gasification reactor; a gasification reaction of the rubber powder is generated under the action of slag heat carriers and the catalysts to achieve oil-gas coproduction. The junked-tire fluidized gasification device and the junked-tire fluidized gasification method have the advantages that blast furnace waste heat is taken as a heat source for tire gasification, using waste to treat waste is realized, and accordingly, recycling and reducing of junked tires as well as efficient recovery and utilization of the blast furnace waste heat are achieved; moreover, by the heat exchange mode of fluidized gasification, caloric transfer in the reaction process of tire gasification can be promoted obviously, and quality of pyrolytic oil products can be improved remarkably.

Description

technical field [0001] The invention relates to the technical field of solid waste recycling, in particular to a device and method for fluidization and gasification of waste tires based on utilization of blast furnace slag waste heat. Background technique [0002] Waste tires are highly resistant to heat, machinery and degradation, and are difficult to digest naturally. If they are discarded in the natural environment, they will not only occupy land, waste resources, but also form a new kind of "black pollution". Therefore, realizing environmental protection and efficient utilization of waste tires has become a worldwide problem. The reclaimed rubber industry is the most important way to utilize waste tires in my country. The development of this industry has effectively made up for the serious shortage of rubber resources in my country. However, there are two fatal weaknesses in the development of reclaimed rubber industry - secondary pollution and flammable and explosive. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/56C10B53/07C10B49/22C10G1/00C21B3/06
CPCC10B49/22C10B53/07C10G1/00C10J3/56C21B3/06Y02P10/20Y02P20/10Y02P20/129Y02P20/143Y02W30/50
Inventor 罗思义
Owner 山东中科能人工环境有限公司
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