A system and method for pyrolysis conversion and utilization of self-adhesive waste

A waste and pyrolysis technology, which is applied in special forms of dry distillation, preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve problems such as waste of valuable resources, restrictions on self-adhesive adhesives, and increased environmental burdens

Active Publication Date: 2018-09-04
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in addition to a small amount of recycling, the treatment of such wastes is basically by stockpiling, which not only takes up a lot of land, but also increases the burden on the environment, causing waste of resources, environmental pollution and other problems
Obviously, the treatment and disposal of self-adhesive waste has become a practical problem restricting the development of the self-adhesive industry.
On the other hand, self-adhesive waste is derived from chemical products, and its components are mainly organic materials rich in hydrocarbons. Traditional incineration and landfilling will cause waste of valuable resources. Chemical conversion into high value-added products can solve the problem of terminal disposal of self-adhesive waste

Method used

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  • A system and method for pyrolysis conversion and utilization of self-adhesive waste
  • A system and method for pyrolysis conversion and utilization of self-adhesive waste
  • A system and method for pyrolysis conversion and utilization of self-adhesive waste

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Send the raw material of adhesive waste crushed to 1-5cm into the rotary kiln preprocessor, and then fully heated after countercurrent contact with the hot flue gas heating medium fed from the bottom of the rotary kiln preprocessor, the temperature of the rotary kiln preprocessor is controlled at 240°C. The chlorine-containing substances in the self-adhesive waste decompose to produce hydrogen chloride, which enters the lime milk absorption pool under the entrainment of the heating medium flow; the pretreated material enters the paddle type pyrolysis reactor, and is sent by the heat carrier conveying device. The high-temperature fuel ash is fully mixed, and rapid catalytic pyrolysis is carried out under the action of calcium oxide in the fuel ash. The temperature of the paddle-type pyrolysis reactor is controlled at 500°C to produce a mixture of pyrolysis semi-coke and pyrolysis oil gas; pyrolysis oil gas The mixed product is separated by the first gas-solid separation ...

Embodiment 2

[0072] In this example, the same experimental method and steps as in Example 1 are adopted, the difference is that the particle size of the self-adhesive waste raw material is controlled at 0.1-1 cm; The temperature of the preprocessor is controlled at 350°C; the heating medium is steam generated by heat exchange of hot flue gas; The reactor adopts a riser-type combustion reactor, and the temperature of the combustion reactor is controlled at 700°C.

Embodiment 3

[0074] In this embodiment, the same experimental method and steps as in Example 1 are adopted, the difference is that the particle size of the self-adhesive waste raw material is controlled at 5-10 cm; the preprocessor adopts a spiral downflow preprocessor, and the preprocessor temperature At 150°C; the heating medium is steam generated by heat exchange during the condensation process of pyrolysis gas phase products; the auxiliary gas is oxygen; the pyrolysis reactor adopts a spiral pyrolysis reactor, and the temperature of the pyrolysis reactor is controlled at 300°C; the combustion reactor adopts a boiling furnace Combustion reactor, the temperature of the combustion reactor is controlled at 850°C;

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Abstract

The present invention relates to a self-adhesive waste pyrolysis conversion utilization system and a self-adhesive waste pyrolysis conversion utilization method, wherein the self-adhesive waste pyrolysis conversion utilization system comprises a catalytic pyrolysis unit and a combustion and catalyst regeneration unit. The self-adhesive waste pyrolysis conversion utilization method comprises that self-adhesive waste is rapidly heated by a high-temperature combustion ash circulation heat carrier, and is subjected to rapid catalytic pyrolysis under the action of the calcium oxide in the high-temperature combustion ash to obtain a high carbon conversion rate and produce a pyrolysis oil product and a pyrolysis gas product; and the calcium carbonate in the combustion ash can be decomposed into calcium oxide through the heat generated by the high temperature combustion of pyrolysis semi-coke so as to achieve the calcium-based catalyst regeneration without the supplementation and the additional addition of the catalyst. According to the present invention, with the system and the method, the treatment and the disposal of the self-adhesive waste are effectively solved, and through the thermal conversion technology, the high quality pyrolysis oil product and the high quality pyrolysis gas product are prepared and the calcium-rich material is co-produced so as to achieve the harmless treatment and the resource utilization of the self-adhesive waste.

Description

technical field [0001] The invention relates to the fields of solid waste treatment and recycling, energy and chemical industry, and in particular, to a system and method for pyrolysis conversion and utilization of self-adhesive waste. Background technique [0002] Self-adhesive (English name: Pressure-sensitive adhesive, PSA), also known as self-adhesive label material, is made of paper, plastic, film or special material, with adhesive on the back, and silicon-coated protective paper as the backing paper. A composite material widely used in product packaging, material identification and other fields. Since 2011, the demand for my country's self-adhesive label market has continued to expand, with a rapid growth rate of nearly 20% per year. At the same time, the amount of waste generated during the production and consumption of self-adhesive labels is also increasing year by year. According to statistics, Shanghai alone generates 30,000 tons of waste in the production of se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10B53/00
CPCC10B53/00C10G1/086C10G2300/1003C10G2300/703
Inventor 惠贺龙邓双李松庚郝丽芳宋文立林伟刚
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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