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Treatment method of itaconic acid waste residue

A treatment method, itaconic acid technology, is applied in the direction of waste fuel, fermentation, etc., to achieve the effects of improving utilization rate, realizing recycling, and saving energy

Active Publication Date: 2011-08-17
QINGDAO LANGYATAI GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no comprehensive utilization of itaconic acid waste residue, so it can be seen that the existing technology needs to be further improved and developed.

Method used

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  • Treatment method of itaconic acid waste residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Fully mix 1,000 kg of itaconic acid protein slag with 1,000 kg of industrial wastewater in the wastewater regulating tank, and stay in the wastewater regulating tank for 24 hours at a pH value of 6 and a temperature of 32°C to form a chemical oxygen demand of 160,000 mg / L Mix the solution, then inject the mixed solution into the continuous stirring anaerobic reactor, ferment at 35°C for 30 days to obtain biogas and biogas residue, pass the biogas through the water sealer and enter the steam-water separator to remove condensed water, and then enter The desulfurization tower removes hydrogen sulfide to prevent subsequent units from being corroded. The dried and desulfurized biogas enters the biogas tank and enters the biogas generator through the flame arrester to generate electricity. Biogas can also be used for boiler combustion; the biogas residue is separated by a solid-liquid separator , to obtain biogas slurry and dehydrated biogas residue, the biogas slurry is recyc...

Embodiment 2

[0030] Fully mix 3500 kg of itaconic acid mycelium with 3500 kg of industrial wastewater in the wastewater regulating tank, and stay in the wastewater regulating tank for 24 hours under the condition of Ph value of 7 and temperature of 35 °C to form a chemical oxygen demand of 80000 mg / L Then inject the mixed solution into the continuous stirring anaerobic reactor and ferment at 33°C for 30 days to obtain biogas and biogas residue. After the biogas passes through the water sealer, it enters the steam-water separator to remove condensed water, and then Enter the desulfurization tower to remove hydrogen sulfide to prevent subsequent units from being corroded. The dried and desulfurized biogas enters the biogas tank, and enters the biogas generator through the flame arrester to generate electricity. The biogas can also be used for boiler combustion; the biogas residue solid-liquid separator Separation to obtain biogas slurry and dehydrated biogas residue, the biogas slurry is recy...

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Abstract

The invention discloses a treatment method of itaconic acid waste residue, which comprises the following steps: abundantly mixing itaconic acid waste residue with industrial waste water in proportion, adjusting the PH value, the chemic oxygen requirement and the temperature of mixture, and remaining for 24 hours to obtain mixed solution; and performing the anaerobic digestion on the mixed solution to obtain methane gas and methane residue. The treatment method is used for performing the anaerobic digestion on the taconic acid waste residue and abundantly decomposing the taconic acid waste residue under a certain condition to obtain the methane gas and the methane residue. The methane gas can be further used for electricity generation, boiler combustion and the like, and the methane residue can be further treated to be an organic fertilizer, therefore, the cyclic utilization of the resource is realized, the energy sources are saved, the pollution is reduced, the environmental benefit and the social benefit are good, and the use ratio of the itaconic acid waste residue is greatly improved.

Description

technical field [0001] The invention relates to a method for producing biogas by using itaconic acid waste residue, in particular to a treatment method for itaconic acid waste residue. Background technique [0002] Itaconic acid is a dibasic unsaturated organic acid with a wide range of uses, which is rare in nature and is now mostly prepared by fermentation. During the production process, a large amount of itaconic acid waste residues such as itaconic acid protein residue and itaconic acid mycelium are produced. These substances are highly polluting and cannot be discarded directly, otherwise they will cause serious pollution. At present, there is no comprehensive utilization of itaconic acid waste residue, so it can be seen that the prior art needs to be further improved and developed. Contents of the invention [0003] The invention provides a treatment method for itaconic acid waste residue to solve the defects in the prior art, and scientifically and rationally proce...

Claims

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Application Information

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IPC IPC(8): C12P5/02
CPCY02E50/343Y02E50/30
Inventor 李悦明张希铭徐建春刘国成
Owner QINGDAO LANGYATAI GRP
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