Method for preparing composite waste plastic powder suitable for coal water slurry from waste traditional Chinese medicine residues and activated carbon

A technology for activated carbon preparation and waste plastics, which is applied in the direction of waste fuel, solid waste removal, chemical instruments and methods, etc. It can solve the problems of product quality impact, pollution, and difficulty in guaranteeing the quality of plastic products, so as to achieve thorough treatment and improve stability , highlighting the effect of safety

Active Publication Date: 2022-04-01
绍兴凤登环保有限公司
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Problems solved by technology

However, the size and toughness of plastic waste cannot meet the requirements of coal water slurry preparation, and cannot meet the feed requirements of coal water slurry gasification system under the existing conditions
[0003] Chinese Patent Application for Recycling and Utilization of Waste Plastic Garbage and Its Application 202110790291.9 proposes a method for recycling waste plastics, which uses waste plastics as raw materials Although the production of recycled plastics realizes the recycling of plastics in principle, due to problems such as inevitable degradation, it is difficult to guarantee the quality of the produced plastic products, and it is impossible to realize the composite processing of various plastics
[0004] Chinese patent application for a low-quality coal flotation collector directional development method 202110742067.2, which proposes a method for preparing plastic waste into coal flotation collectors method, although this method can obtain a certain degree of application of waste plastics, it has great limitations on the types of raw materials, and the impurities brought by plastic materials will have a great impact on product quality.
[0005] Chinese patent application for a device and method for clean combustion of solid fuels 202110491996.0 proposes a method for treating plastic waste by incineration, although the device can realize different types of Incineration of plastics, but in the end only heat energy is obtained, and the combustion of waste plastics will inevitably cause other pollution
[0006]Although the above methods can realize the recycling and utilization of plastic waste to a certain extent, they have relatively strict selectivity for raw materials, and the final products cannot realize the recycling and utilization of waste plastics. Therefore, it is urgent to develop a technology suitable for the preparation of multi-source plastic powders for coal-water slurry gasification raw materials

Method used

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  • Method for preparing composite waste plastic powder suitable for coal water slurry from waste traditional Chinese medicine residues and activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Waste polyethylene packaging barrels, polypropylene waste packaging bags, and polyester waste packaging bottles, each of which has a mass of 50g, and the waste plastics are chopped and mixed;

[0027] (2) Heating to 165°C in the internal mixer, compacting and heating for 2 hours, the material in the internal mixer becomes fluid.

[0028] (3) Add 150g of waste medicine dregs, raise the temperature to 200°C, knead and stir evenly, continue heating for 1 hour, turn on the internal mixer, and cool the discharged material to room temperature.

[0029] (4) After the material is crushed by a crusher, it is added to a ball mill and ground to 200 mesh with a pass rate of 50%. After mixing with dry coal at a ratio of 1:9, add 2000g of water and 50g of 40% NDF type coal-water slurry additive to prepare Coal water slurry, the key indicators of the prepared coal water slurry are:

[0030] Solid content: 62.31%, viscosity: 596mPa.S, calorific value: 3950Kcal / Kg

Embodiment 2

[0032] (1) Waste polyethylene packaging barrels, polypropylene waste packaging bags, and polyester waste packaging bottles, the masses of which are 160g, 20g, and 20g respectively, and the waste plastics are chopped and mixed;

[0033] (2) Heating to 180°C in the internal mixer, compacting and heating for 2.5 hours, the material in the internal mixer becomes fluid.

[0034] (3) Add 200g of traditional Chinese medicine dregs, mix and stir evenly, continue heating at 195°C for 1 hour, turn on the internal mixer, and cool the material to room temperature.

[0035] (4) After the material is crushed by a crusher, it is added to a ball mill and ground to 200 mesh with a pass rate of 50%. After mixing with dry coal at a ratio of 2:8, add 1200g of water and 40g of 40% NDF type coal-water slurry additive to prepare Coal water slurry, the key indicators of the prepared coal water slurry are:

[0036] Solid content: 62.46%, viscosity: 633mPa.S, calorific value: 3862Kcal / Kg

Embodiment 3

[0038] (1) Waste polyethylene packaging barrels, polypropylene waste packaging bags, and polyester waste packaging bottles. The masses of the three are 120g, 20g, and 60g respectively. The waste plastics are chopped and mixed.

[0039] (2) Heating to 170°C in the internal mixer, compacting and heating for 2.0 hours, the material in the internal mixer becomes fluid.

[0040] (3) Add 150g of activated carbon, mix and stir evenly, continue heating at 202°C for 1 hour, turn on the internal mixer, and cool the material to room temperature.

[0041] (4) After the material is crushed by a crusher, it is added to a ball mill and ground to 200 mesh with a passing rate of 50%. After mixing with dry coal at a ratio of 5:5, 700g of water and 30g of 40% NDF type coal-water slurry additive are added to prepare Coal water slurry, the key indicators of the prepared coal water slurry are:

[0042] Solid content: 60.19%, viscosity: 690mPa.S, calorific value: 3637Kcal / Kg

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Abstract

The invention discloses a method for preparing composite waste plastic powder suitable for coal water slurry from waste traditional Chinese medicine residues and activated carbon, which comprises the following steps: crushing a polyethylene waste packaging barrel, a polypropylene waste packaging bag and a polyester waste packaging bottle, adding into an internal mixer, heating to 150-180 DEG C to form a fluid, and cooling to room temperature to obtain the composite waste plastic powder suitable for coal water slurry. Adding waste traditional Chinese medicine residues or waste activated carbon accounting for 100-200% of the mass of the plastic, raising the temperature of the material to 190-220 DEG C, uniformly mixing and stirring, cooling to room temperature, crushing by a crusher, grinding into particles meeting the particle size requirement of the coal water slurry, and mixing with coal to prepare the coal water slurry. The method can effectively treat waste plastic, prepare the waste plastic into brittle plastic powder, mix the brittle plastic powder with coal to prepare the coal water slurry, and perform safe and environment-friendly treatment on the coal water slurry gasification device, and compared with the existing plastic waste treatment method, the method has the advantages of thorough treatment, safety, environmental protection and the like, and can also improve the stability of the coal water slurry and reduce the production cost. The method has outstanding safety, performance and cost advantages.

Description

technical field [0001] The invention relates to a method for preparing composite waste plastic powder suitable for coal-water slurry by using waste traditional Chinese medicine slag and activated carbon, and belongs to the technical field of coal-water slurry. Background technique [0002] With the development of the economy, more and more plastic materials have entered the application field, and the resulting problem of plastic waste disposal has become more and more severe. A large amount of plastic waste not only brings environmental pollution, but also causes a series of health, ecological problem. Coal-water slurry gasification is to use pure oxygen to convert the hydrocarbon raw materials into the furnace into synthesis gas (effective gases are CO and H 2 ), and then use synthesis gas to produce dozens of chemical products such as ammonia, methanol, ethylene glycol, and polyolefins. Mature technology has been formed in our country. Using coal-water slurry gasificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L5/44C10L5/48C10L5/04B09B3/35B09B3/38B09B101/75
CPCY02E50/30
Inventor 柳菁贝军杰钟磊张浙锦周建荣潘时俊
Owner 绍兴凤登环保有限公司
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