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Method for recycling and comprehensively utilizing synthetic leather distillation kettle residue

A rectifying still and resource-recycling technology, which is applied in the field of treatment of synthetic leather rectifying still residues, achieves broad development prospects, improves gas production efficiency, and reduces environmental pollution.

Inactive Publication Date: 2014-03-05
浙江威尔斯生物能源开发有限公司
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

For this reason, many manufacturers and scientific research institutes have carried out research and development on the above-mentioned problems, but so far no ideal processing method has been popularized and applied.

Method used

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  • Method for recycling and comprehensively utilizing synthetic leather distillation kettle residue

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Embodiment Construction

[0024] figure 1 As shown, for the present invention to create a specific embodiment of the method for comprehensive utilization of synthetic leather rectification still residue resources, the method follows the steps:

[0025] (1) First, collect and store the DMF residue in a specific container, and collect the slaughter sewage into the sump.

[0026] (2) Dilute the slaughter sewage of the DMF kettle residue and the sump in the deployment tank, then add additives to carry out detoxification and acidification adjustment, and the additive components are (NH4)2HPO4, K2CrO7, CO(NH2)2, alkaline The weight ratio of strain KUFA-1, inoculated sludge, RR[Alx+2ySin-(x+2y)O2n] mH2O, DMF residue, slaughter sewage and additives is 1:10-100:0.001, and the pH value is controlled at Between 7-9, add composite microbial flora and mix thoroughly to make sewage mixture; Described composite microbial flora is Bacillus, Pseudomonas alcaligenes, Thiobacillus, Brevibacterium, Saccharomyces A compo...

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Abstract

The invention discloses a method for recycling and comprehensively utilizing synthetic leather distillation kettle residue. The method comprises the following steps of: (1) collecting DMF (Dimethyl Formamide) kettle residue and slaughter sewage; (2) adding additives to the DMF kettle residue and the slaughter sewage in a blending tank for dilution, detoxication and acidification adjustment, controlling the PH value in the range from 7 to 9, and adding a compound microorganism flora to form a sewage mixture; (3) feeding the sewage mixture into an anaerobic reactor for culture and fermentation; (4) culturing and fermenting the sewage mixture in the anaerobic reactor, and automatically separating out biogas, biogas slurry and biogas residue; (7) feeding the biogas residue into a biogas residue tank and gasifying the biogas residue by a biomass gasifier for generating power, and performing landfill treatment on residual dust. The method provided by the invention has the characteristics of simple process, convenient operation and low operating cost; the synthetic leather distillation kettle residue is transformed into a biological energy source through biodegradation and the biological energy source can be utilized comprehensively.

Description

technical field [0001] The invention relates to a method for processing synthetic leather rectification still residues, in particular to a method for comprehensively utilizing synthetic leather rectification still residue resources by using bioengineering. Background technique [0002] Synthetic leather rectification still residue refers to the solid-liquid mixture remaining in the SMF recovery device tower kettle after vacuum distillation and recovery of DMF solvent in the production of synthetic leather. It is usually referred to as DMF still residue or still residue in the industry, mainly containing high concentration DMF (dimethylformamide), methylamine salts, fibers, resins and fillers, etc., wherein the DMF content is about 8-20%, the methylamine salt content is 25-40%, and the appearance is mostly a black solid-liquid mixture , very few are dark brown, belonging to hazardous solid waste. [0003] DMF is an organic solvent with excellent performance and the main fin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C10L3/08
CPCY02E50/343Y02E50/30
Inventor 官平东
Owner 浙江威尔斯生物能源开发有限公司
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