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Pyrolysis reactor for sludge treatment in open waters and sludge treatment method

A sludge treatment and open technology, applied in the field of resources and environment, can solve problems such as the difficulty of making oil from sludge, and achieve the effects of reducing energy consumption, heating time, and environmental protection pressure.

Active Publication Date: 2020-08-07
禹城市惠福新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the water content of municipal sludge is as high as 99% before treatment, and contains heavy metals (such as Co, Pb, Ni, etc.), and the organic components of sludge contain a large amount of protein, fat, mineral oil, humus, bacteria and bacteria. Metabolites at all levels, including parasites or eggs, microorganisms, residues of some industrial polymer materials, waste paint, residues of various organic solvents, coke or incomplete decomposition of organic matter, make sludge oil greatly increased difficulty

Method used

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  • Pyrolysis reactor for sludge treatment in open waters and sludge treatment method
  • Pyrolysis reactor for sludge treatment in open waters and sludge treatment method
  • Pyrolysis reactor for sludge treatment in open waters and sludge treatment method

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Experimental program
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Effect test

Embodiment 1

[0065] (1) Sludge source: sludge from the bottom of Suzhou Changyang Lake

[0066] (2) Determination of sludge pyrolysis reaction temperature and reaction time

[0067] ①The pyrolysis reaction temperature is determined by thermogravimetric analysis. The specific operation method and results are as follows:

[0068] After the sludge was naturally dried for 7 days, it was placed in a constant temperature box, dried at 100°C for 3 hours, passed through a 150-mesh sieve after grinding, and analyzed by thermogravimetric analysis (temperature range: 50°C-800°C, pressure: normal pressure, Heating rate: 5°C / min, carrier gas: nitrogen, purity > 99.9%, flow rate 60mL / min) to analyze the dried sludge samples, the specific results are attached image 3 shown.

[0069] It can be concluded from the figure that the quality of sludge changes significantly in the range of reaction temperature from 150°C to 320°C, but when the reaction temperature is higher than 320°C, the quality of sludge d...

Embodiment 2

[0099] (1) Sludge source: Bottom sludge of Baiyangdian Lake, Baoding City, Hebei Province

[0100] (2) Determination of sludge pyrolysis reaction temperature and reaction time

[0101] ①The pyrolysis reaction temperature is determined by thermogravimetric analysis. The specific operation method and results are as follows:

[0102] After the sludge was naturally dried for 7 days, it was placed in a constant temperature box, dried at 100°C for 3 hours, passed through a 150-mesh sieve after grinding, and analyzed by thermogravimetric analysis (temperature range: 50°C-800°C, pressure: normal pressure, Heating rate: 5°C / min, carrier gas: nitrogen, purity > 99.9%, flow rate 60mL / min) to analyze the dried sludge samples, the specific results are attached Figure 4 shown.

[0103] It can be concluded from the figure that the sludge quality changes significantly in the range of reaction temperature from 150°C to 330°C, but when the reaction temperature is higher than 330°C, the sludg...

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Abstract

The invention discloses an open water area sludge treatment pyrolysis reactor which comprises a reaction kettle, an electric heating device, a semi-continuous feeding device and a circulation cooling device. A stirring device is arranged inside the reaction kettle, the circulation cooling device comprises a cooling liquid circulation pool and a cooling coil, the semi-continuous feeding device comprises a feed bin communicated with the reaction kettle, the middle of the feed bin is communicated with a sludge feeding port through a feeding pipe, and the bottom of the feed bin is communicated with a discharging port through a discharging pipe. The invention further discloses an open water area sludge treatment method which includes the steps of pretreatment, pyrolysis, product separation and extraction, semi-continuous feeding, discharging and post-treatment. 40% or more of organic matters in sludge is transformed into high heating value fuel oil, the transformation rate of the organic matters reaches up to 90% or more, a large quantity of non-condensable gas, solid residues and water-phase liquid are produced, the sludge is maximally used, and environmental protection pressure is remarkably reduced.

Description

technical field [0001] The invention relates to a pyrolysis reactor for sludge treatment in open waters and a treatment method, belonging to the technical field of resources and environment. Background technique [0002] my country has a vast territory, and there are many open waters (natural rivers, lakes, harbors and urban rivers); in many economically developed and densely populated areas, human activities such as industrial and agricultural production have caused most of the open waters to be polluted to varying degrees , a large number of pollutants are enriched in the bottom sludge, causing serious pollution of the bottom sludge. When the external environment changes, the pollutants accumulated in the bottom sludge will be re-released to the water environment and become a permanent source of pollution. [0003] The sludge at the bottom of open waters in my country has the characteristics of large volume and wide distribution. The dredging method is currently the main ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/10C10B53/00C10G1/00
CPCC02F11/10C10B53/00C10G1/00Y02W10/40
Inventor 于宁瑞
Owner 禹城市惠福新能源有限公司
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