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Energy-saving and water-saving coupled carbon complementation solid hazardous waste treatment system and method

A treatment system and replenishment technology, which is applied in the field of solid and hazardous waste treatment systems with energy saving and water saving coupled with carbon replenishment, can solve the problems of high comprehensive energy consumption of the system, high carbon dioxide gas, difficulty in meeting carbon emission indicators, etc., and achieve combustion intensity. big effect

Active Publication Date: 2021-09-07
江苏省环境工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this system consumes a large amount of coal fuel and produces a lot of carbon dioxide gas, which is difficult to meet the future carbon emission targets
At the same time, the waste heat of high-temperature exhaust gas generated by the system is not fully utilized, and the overall energy consumption of the system is high

Method used

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  • Energy-saving and water-saving coupled carbon complementation solid hazardous waste treatment system and method
  • Energy-saving and water-saving coupled carbon complementation solid hazardous waste treatment system and method
  • Energy-saving and water-saving coupled carbon complementation solid hazardous waste treatment system and method

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Effect test

Embodiment

[0060] The following is an analysis of operating parameters in conjunction with a 2×100,000-ton annual copper-containing sludge disposal production line. The exhaust gas purification system adopts the second scheme. The specific operating parameters are as follows:

[0061] Oxygen-enriched side-blowing furnace processing scale: 100,000 t / a,

[0062] Oxygen-enriched side blowing furnace top exhaust gas temperature: 1050°C,

[0063] Oxygen consumption of oxygen-enriched side-blowing furnace: 28000Nm 3 / h

[0064] Oxygen-enriched side blowing furnace reflux carbon dioxide volume: 41000Nm 3 / h

[0065] (1) Main components of furnace top exhaust gas:

[0066] Exhaust gas flow: 72000Nm 3 / h

[0067] Tail gas water vapor volume fraction: 5.87%,

[0068] Tail gas carbon dioxide volume fraction: 90.3%,

[0069] Exhaust oxygen volume fraction: 3.83%,

[0070] Concentration of major pollutants in furnace top exhaust gas:

[0071] Exhaust gas NOx concentration: 250mg / Nm 3 ,

...

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Abstract

The invention discloses an energy-saving and water-saving coupled carbon complementation solid hazardous waste treatment system and method and belongs to the technical field of solid hazardous waste treatment. After being evenly mixed according to a certain proportion, copper-containing or nickel-containing sludge, waste activated carbon and the like are fed into an oxygen-rich side-blown converter to be smelted, and finally water-quenched slag, copper matte or nickel matte products are obtained. Carbon dioxide-rich waste gas generated by the oxygen-rich side-blown converter sequentially passes through a secondary combustion chamber, a waste heat boiler, a quench tower, a tail gas purification system and a flue gas deep drying system to obtain pure carbon dioxide, finally the pure carbon dioxide is stored after being compressed by a CO2 compressor, and carbon dioxide complementation is realized. Steam generated by a waste heat boiler device mainly enters a back pressure machine and is used for dragging an air separation system main compressor and a motor-generator set, and self-balance recovery of waste heat energy can be achieved through the system. The system and method can be used for treating copper-containing or nickel-containing sludge and waste activated carbon, zero water replenishing of the system is realized, comprehensive utilization of waste is realized, and the whole set of system has a wide application prospect in the solid hazardous waste industry.

Description

technical field [0001] The invention belongs to the technical field of solid and hazardous waste treatment, and in particular relates to an energy-saving and water-saving solid and hazardous waste treatment system and method coupled with carbon supplementation. Background technique [0002] Hazardous waste is solid waste with one or more hazardous characteristics of toxicity, corrosion, flammability, reactivity or infection. Copper-containing waste (HW22), nickel-containing waste (HW46), and surface treatment waste (HW17) are mainly Hazardous characteristic is toxicity. Copper and nickel-containing sludge mainly comes from metal processing industries, such as electroplating industry, metal surface treatment, PCB board manufacturing, etc. [0003] The wastewater and waste liquid produced by the metal industry are generally treated by chemical precipitation method. The metal ions in the wastewater are precipitated in the form of compounds by adjusting the pH value of the wast...

Claims

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Application Information

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IPC IPC(8): F27D3/15F27D7/02F27D17/00
CPCF27D3/1545F27D17/004F27D17/008F27D7/02Y02P10/25Y02P10/122
Inventor 马贵林左武崔灵丰涂勇曲常胜
Owner 江苏省环境工程技术有限公司
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