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A whole tire gasification device and method for waste tires

A technology of gasification device and waste tires, which is applied in the direction of gasification process, fixed bed gasification, and production of combustible gas. Good benefit and simple operation

Active Publication Date: 2017-07-28
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, direct burning of tires is prone to secondary pollution and has been banned in most countries
However, traditional pyrolysis and gasification require tedious and energy-intensive steps such as slicing, freezing, and crushing, which increases operating equipment and costs, and reduces the economics of the recycling process.
The invention patent with application number 201010149984.1 (a waste tire gasification device and method) proposes a method of gasifying the whole tire without pretreatment, but the tires in this method need to be stacked sequentially, and the operation is difficult; the gap between the tires Large, reducing the space utilization efficiency of the gasification chamber; the operation flexibility of the pure tire gasification process is poor, and the gasification efficiency is low

Method used

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  • A whole tire gasification device and method for waste tires

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] The gasification device schematic diagram of the present invention is as figure 1 Shown:

[0024] 1) The gasification furnace body 1 of the device is made of carbon steel, and the upper and lower parts are respectively welded with flat heads. The lower part of the gasification furnace body 1 is equipped with a porous grate 3, which is made of cast iron; the porous grate 3 is arranged at the lower part of the gasification furnace body 1. Occupying 1 / 4 of the height of the gasification furnace body, the gasification furnace body 1 is divided into two parts: the upper gasification chamber 1a and the lower ash box 1b. An opening is set on the left side of 1b as the ash outlet 4;

[0025] 2) A gasification agent inlet 5 is provided on the lower right side of the ash box 1b, a plasma ignition device 6 is provided on the upper side of the gasification chamber 1a, and a gas outlet 8 is installed on the other side of the upper part of the gasification chamber 1a, and the outlet...

Embodiment 2

[0030] As in the waste tire and biomass co-gasification device of Example 1, the mass ratio of waste tires in the mixed raw materials is 40%, the waste tires are Bridgestone car tires with a size of 215 / 70R15, and the biomass is rice husks with a length of 1 cm. ; The ignition fuel F is natural gas; the oxygen-enriched air is used as the gasification agent C, the oxygen content in the oxygen-enriched air is 50%, and the oxygen excess coefficient is 0.35; the gasification temperature in the furnace is maintained at 850°C; the gas A produced has a low calorific value 7MJ / m 3 , The gasification is completed in about 2.5 hours. After completion, the quality of non-steel wire solid ash is 12% of the gasification raw material quality (excluding steel wire), and the ash quality is less.

Embodiment 3

[0032] As in the waste tire and biomass co-gasification device in Example 1, the mass ratio of waste tires in the mixed raw materials is 50%, the waste tires are Pirelli truck tires with a size of 295 / 80R22.5, and the biomass is 3 cm in length. Fuel; the ignition fuel F is acetylene; oxygen is used as the gasification agent C, and the oxygen excess coefficient is 0.30; the gasification temperature in the furnace is maintained at 900°C; the low calorific value of the produced gas A is 10MJ / m 3 , the gasification is completed in about 2 hours. After completion, the quality of non-steel wire solid ash is 10% of the gasification raw material quality (excluding steel wire), and the ash quality is less.

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Abstract

The present invention relates to an entire-tire gasification device and an entire-tire gasification method for waste tires. The device is composed of a gasification furnace body (1), a heat preservation layer (2) and a porous grate (3), wherein the porous grate (3) is arranged at the lower part of the gasification furnace body (1), and the gasification furnace body (1) is divided into an upper gasification chamber (1a) and a lower ash box (1b); an ash outlet (4) is formed in the left side of the ash box (1b), and a gasifying agent inlet (5) is formed in the lower right side of the ash box; the heat preservation layer (2) is arranged at the outside of the gasification furnace body; a plasma ignition device (6) is arranged at one side of the upper part of the gasification chamber (1a), a fuel outlet (8) is formed in the other side of the upper part of the gasification chamber, and a gasification raw material inlet (7) is formed in the top of the gasification chamber. A biomass raw material and an entire waste tire are conveyed into the gasification chamber after being mixed, a gasifying agent is filled from the lower side of the gasification device, and the fuel gas generated in the reaction is exhausted from the fuel outlet (8); solid ash and tire steel wires are discharged from the ash outlet after the gasification. The device has the advantages of simple structure, low manufacturing cost, simple operation, strong method controllability, capability of reducing tires and higher gasification efficiency.

Description

technical field [0001] The invention relates to a device and method for gasifying whole tires of waste, in particular to a device and method for gasifying whole tires of waste tires and biomass in a fixed bed gasification device to produce combustible gas. Background technique [0002] With the development of the automobile industry, the amount of waste tires is increasing day by day, and the "black pollution" it forms is threatening the living environment of all human beings. Tires are mainly made of rubber and steel wire, and have high reuse value after being discarded: the calorific value of waste tires is about 25-30MJ / kg, which can be used as high-energy fuel; it contains as much as 55% to 60% of rubber mixture, which can be made into useful reclaimed rubber and rubber powder; in addition, it also contains 16% to 18% steel wire, which can be used as a raw material for high-quality spring steel. According to statistics, my country produces 140 million waste tires every ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/20C10J3/06
CPCC10J3/06C10J3/20C10J2300/0946C10J2300/0956C10J2300/0959C10J2300/1807
Inventor 朱跃钊吴昊陈海军
Owner NANJING TECH UNIV