Method for harmlessly treating organic wastewater of quality-based utilization of low-rank coal

A technology for harmless treatment of organic wastewater, applied in gasification process, granular/powder fuel gasification, petroleum industry, etc. problems such as large quality differences, to achieve the effect of good practical value, less pores, and low water content

Pending Publication Date: 2019-07-26
浙江天禄环境科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Benefits of technology

This patented technology describes methods for treating harmful substances found in various types of industrial wastes such as biological tissue residue. These techniques involve converting these materials into smaller particles called finely divided carbon blacks, making them easier to break down when mixed with fuel oil or synthetic gases. By adding this modified coal onto the ash produced during burning, they become even stronger due to their lower surface area per unit weight compared to traditional coals. They have excellent properties like being able to absorb liquids without losing too much energy. Additionally, there're no added agents needed, resulting in cleaner products containing fewer impurity elements than regular ones. Overall, this new approach provides technical benefits over existing technologies while minimizing environmental impact.

Problems solved by technology

This patented describes various ways to efficiently produce coal-wheel slipstream without generating harmful wastes or requiring expensive disposals during storage. Water usage plays an important role in these techniques, while recycling excessive amounts of water may lead to increased costs associated with storing them safely away. Additionally, coarse cake generated through conventional technologies results in poor performance and reduced usability compared to fine powder derived coal products.

Method used

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  • Method for harmlessly treating organic wastewater of quality-based utilization of low-rank coal
  • Method for harmlessly treating organic wastewater of quality-based utilization of low-rank coal
  • Method for harmlessly treating organic wastewater of quality-based utilization of low-rank coal

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specific Embodiment

[0051] A method for the harmless treatment of organic waste water by means of low-rank coal, said method comprising the following steps:

[0052] 1) The step of preparing upgraded coal: the low-rank coal is prepared through a quality-separation utilization process to obtain the upgraded coal; the quality-separation utilization process includes a drying process and a gasification reduction process; Drying treatment to obtain dried low-rank coal and waste gas, and the waste gas is subjected to a dust removal process to obtain low-rank coal powder; the gasification reduction process is to heat the dried low-rank coal under anaerobic or micro-aerobic conditions chemical reaction process to obtain the upgraded coal;

[0053] 2) Step of preparing coal water slurry: Weigh the formula components of coal water slurry and add them into a coal mill for grinding. The formula components include upgraded coal, coal water slurry additives, and organic waste water. After the powder is ground to

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Abstract

The invention provides a method for harmlessly treating organic wastewater of quality-based utilization of low-rank coal. The method has the advantages that quality-improved coal prepared by the quality-based utilization process of the low-rank coal is utilized; according to the features to the quality-improved coal is low in water content, few and small in pores and good in hydrophobicity, the quality-improved coal is combined with organic wastewater to prepare coal-water slurry, the prepared coal-water slurry can be used for combustion or prepared into synthetic gas, the organic wastewater is harmlessly treated, organic matter in the organic wastewater is converted into the synthetic gas, the quantity of the coal-water slurry prepared by the organic wastewater is reduced, and the organicwastewater is efficiently treated; the prepared coal-water slurry can be prepared into the synthetic gas through a coal-water slurry gasification process, high temperature in a gasification furnace decompose the organic wastewater into harmless CO, water and H2, water with low COD value (generally COD is not larger than 500mg/l) is obtained, the water can replace fresh water in a chemical process, and good circulation of circulating water is achieved.

Description

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Claims

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Application Information

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Owner 浙江天禄环境科技有限公司
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