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Waste tyre fixed-bed gasification furnace and gasification method

A fixed-bed gasifier and waste tire technology, which is applied in fixed-bed gasification, combustible gas purification, combustible gas purification/renovation, etc. The effect of saving equipment investment and project cost

Inactive Publication Date: 2013-07-17
ZHONGSHAN SAIKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some waste tire thermal conversion utilization methods require periodic startup and shutdown (such as the patent application number 200610053685.1, due to its furnace structure design, it is necessary to stop the furnace when feeding and discharging materials and wait for the temperature of the furnace body to gradually cool down, and then open the furnace The elliptical cover plate on the top and the flat bottom plate on the bottom of the furnace are used for feeding and discharging), which can only be operated intermittently, and the production efficiency of the system needs to be further improved

Method used

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  • Waste tyre fixed-bed gasification furnace and gasification method
  • Waste tyre fixed-bed gasification furnace and gasification method
  • Waste tyre fixed-bed gasification furnace and gasification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Taking a process system with a waste tire processing capacity of 140kg / hour as an example, the gasifier 5 has an inner diameter of 0.5m and a height of 3.8m (from the furnace top to the lower electric sealing valve 120).

[0053] Waste truck tire A is cut into tire crown and side bead through ring cutting machine 1, and then the tire crown and side bead are sent to strip cutting machine 2, and the two are cut into long and narrow tire strips with a width of about 5cm. After the strips pass through the dicing machine 3, they are further cut into tire fragments with a size of about 5cm×5cm. Then the tire fragments are transported to the feeding system on the top of the gasifier 5 by the feeding belt conveyor 4 . At this time, the feed piston 110 is located at the initial position on the left end of the outer electric flapper valve 111, the outer electric flapper valve 111 and the inner electric flapper valve 112 are in the closed state, and the upper electric flapper valv...

Embodiment 2

[0065] Taking a process system with a waste tire processing capacity of 100kg / hour as an example, the size of the gasifier 5 is the same as that of Embodiment 1, with an inner diameter of 0.5m and a height of 3.8m (from the furnace top to the lower electric sealing valve 120). Adjust the opening of the gasification agent inlet regulating valve 16, and control the gasification agent (air) flow rate to 250Nm 3 / h, the cross-sectional flow velocity of the gasification agent at the bottom of the gasifier 5 is about 0.4m / s. The feeding and discharging process of the gasifier 5 is the same as that of Embodiment 1, and will not be repeated here. The high-temperature slag after the gasification reaction is cooled to about 45° C. in the slag cooler 17 .

[0066] The angle between the electrode anode 104 of the top arc type tar breaker in the gasification furnace 5 and the horizontal plane is maintained at 50°, the cross-sectional size is 14cm×14cm, and the total area of ​​the four ano...

Embodiment 3

[0069] Taking a process system with a waste tire processing capacity of 100 kg / hour as an example, the size of the gasifier 5 and the feeding and discharging process are the same as those in Embodiment 1. Control gasification agent (air) flow to 250Nm 3 / h, the gas pressure on the upper part of the gasifier 5 is maintained at about -150Pa.

[0070] The angle between the electrode anode 104 of the top arc type tar breaker in the gasification furnace 5 and the horizontal plane is maintained at 50°, the cross-sectional size is 6cm×14cm, and the total area of ​​the four anode plates accounts for the area of ​​the circumference of the inner wall of the furnace where they are located (the same height Below) 15%, electrode cathode length 20cm. The linear high-voltage DC power supply adopts a supply voltage of 800V and a supply current of 4.5A. The air flow velocity in the cooling channel 103 of the arc tar breaker is about 6m / s, the flow velocity of the combustible gas in the catho...

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Abstract

The invention relates to a waste tyre fixed-bed gasification furnace and a gasification method. The fixed-bed gasification furnace mainly consists of a charging system, a discharging system, an electric-arc type tar decomposer and a furnace body; the gasification method mainly comprises the following steps of: enabling tyre material blocks to react with gasification agent in the fixed-bed gasification furnace to generate a combustible gas; guiding the combustible gas out of the gasification furnace after most of tar in the combustible gas is primarily purified and removed by the electric-arc type tar decomposer on the inner top of the gasification furnace; and converting the combustible gas into the combustible gas with a medium heat value after the subsequent purifying and treating processes including dust-removing, condensing, spraying, sulfur-removing, drying, pressure-stabilizing and the like, wherein the tar separated in the subsequent purifying process is re-introduced to the gasification furnace for being secondarily decomposed. The gasification method is free of an extra heat source, so that the whole system is operated under micro-negative pressure, and no harmful gas is leaked in the process; and the whole process equipment can be continuously operated by virtue of the unique charging structure design and the discharging structure design of the fixed-bed gasification furnace, and therefore, the gasification method is an efficient waste tyre resource utilization method.

Description

technical field [0001] The invention belongs to the field of gasification of waste high-molecular organic matter, and relates to an environment-friendly fixed-bed gas furnace and a gasification method for continuous treatment of waste tires, which can realize efficient resource utilization of waste tires. Background technique [0002] With the development of my country's national economy and automobile industry, the number of large trucks and private cars is increasing rapidly year by year. At the same time, the annual production of waste tires in my country has exceeded 10 million tons, and the existing domestic waste tire recycling and comprehensive utilization capabilities are far from meeting the current severe waste tire growth trend and resource and environmental requirements. The disposal methods of waste tires mainly include the following four methods: landfill, original shape transformation (such as refurbishment, making protective pads), recycling (such as manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/20C10J3/30C10J3/02C10J3/84C10K1/00C08J11/12
CPCY02W30/62
Inventor 王凯苗旺范晓旭孙荣峰高超迟啸峰
Owner ZHONGSHAN SAIKE ENVIRONMENTAL PROTECTION TECH CO LTD
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