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Foam titanium-based catalyst for sludge pyrohydrolysis treatment system

A treatment system, titanium foam technology, applied in pyrolysis treatment of sludge, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc., can solve long reaction time, time cost, reactor cost, Insufficient and other problems, to achieve the effect of high catalytic efficiency

Inactive Publication Date: 2018-05-29
北京达源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing low-temperature thermal hydrolysis process often requires a long reaction time to ensure the treatment effect, which will cause unfavorable factors such as time cost and increased reactor cost in practical applications.
Adding catalysts to the system can solve this problem, but there is still a lack of catalysts to improve the efficiency of sludge thermal hydrolysis. is of great significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Soak 79.6 grams of titanium foam particles with a particle size of 3-5mm in 500 mL of ethanol solution with a mass percent concentration of 40% for 0.5 hour, filter and remove the liquid to obtain material A1, and after washing with 500 mL of deionized water, material A1 will Place in a drying oven at ℃ for 1.5 hours to obtain substance A;

[0040] (2) Add 3.6 grams of 3-hydroxy-2-pyrazinecarboxylic acid and 4.4 grams of methyl 5-hydroxypyrazine-2-carboxylate into 1500 mL of absolute ethanol and shake for 40 minutes in a shaker at a temperature of 35°C , shake well and divide into 5 equal parts to obtain mixed solution H1, mixed solution H2, mixed solution H3, mixed solution H4, and mixed solution H5;

[0041] (3) 1.6 g of 5-bromo-3-chloropyrazin-2-amine was added to the mixed solution H1, and shaken in a shaker at a temperature of 30° C. for 35 minutes to obtain the mixed solution J1;

[0042] (4) Add substance A to the mixture J1, shake it in a shaker at 45°C for 4...

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PUM

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Abstract

The invention discloses a foam titanium-based catalyst for a sludge pyrohydrolysis treatment system. Foam titanium is cleaned and then modified with a mixed solution prepared from 3-hydroxyl-2-pyrazinecarboxylic acid, 5-hydroxypyrazine-2-carboxylic acid methyl ester, 5-bromo-3-chloropyrazin-2-amine, 4-chloro-6,7-dimethoxyquinoline, 3-methyl-4-aminopyridine, 2-chlorothiophene-3-carboxylic acid and4-bromo-1,2-dihydropyridazine-3,6-dione, and a substance C is prepared; the substance C is modified with a mixed solution prepared from CdCl2, MgCl2, PbCl2, sodium vanadate and sodium aluminate, and asubstance D is prepared; the substance D is modified with a mixed solution prepared from 5-chloro2-fluoro-3-nitropyridine, N-(6-chloro-3-pyridazinyl)butanamide, 2-butyl-3-methylpyrazine, 6-chloropyrazine-2-carbonitrile and 4-chloro-7-trifluoromethylquinoline, and an obtained substance is the foam titanium-based catalyst for the sludge pyrohydrolysis treatment system.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, in particular to a foam titanium-based catalyst used in a sludge thermal hydrolysis treatment system. Background technique [0002] Sludge thermal hydrolysis technology is to fully mix and react the sludge to be hydrolyzed with 190°C saturated steam in a closed pressure vessel under specific working conditions. When the sludge is heated, the temperature rises and the thermal movement of the particles intensifies, promoting At the same time, the cells in the sludge expand and rupture due to heating, releasing proteins, minerals and cell membrane fragments inside the cells, making them easily degradable amino acids, volatile fatty acids and carbohydrates. Molecular matter. Its goal is to enhance the biodegradability of sludge through the hydrolysis of organic solids in sludge. Part of the suspended solids in the sludge is hydrolyzed into more easily biodegradable soluble substances, so t...

Claims

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Application Information

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IPC IPC(8): C02F11/10B01J31/38
CPCB01J31/38C02F11/10
Inventor 不公告发明人
Owner 北京达源环保科技有限公司
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