Process system and method for plasma gasification of industrial sludge

A technology of industrial sludge and process method, applied in chemical instruments and methods, petroleum industry, sludge treatment, etc., can solve problems such as secondary pollution, heavy metals affecting the surrounding environment, dioxins polluting the atmosphere, etc., to avoid re-generation Effect

Pending Publication Date: 2018-10-19
CHENGDU YUANYONG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has an immediate effect on sludge reduction, but the incineration process consumes a lot of energy, and at the same time the incineration produces tail gas, especially the dioxins produced under medium and high temperature conditions, which are discharged into the atmosphere, which seriously affects the physical and mental health of surrounding residents. The incineration residue contains toxic and harmful substances such as heavy metals, which will cause secondary pollution when entering the landfill
[0007] Incineration solidification landfill method: The difference between incineration solidification landfill method and incineration landfill method is that after the sludge is incinerated, the residue is mixed with cement for solidification, and after solidification, it enters the landfill for landfill. This method also contains dioxins. At the same time, the solidified residue can control heavy metals from entering the groundwater in the short term, but after several years of cement curing ability failure, heavy metals will enter the groundwater again and affect the surrounding environment

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  • Process system and method for plasma gasification of industrial sludge

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Embodiment 1

[0030] As a kind of most basic embodiment of the system of the present invention, disclose a kind of process system of plasma gasification of industrial sludge, as figure 1 , including a sludge input device, a plasma gasification system, a combustible gas combustion system, a heat energy recovery system and an exhaust gas treatment system connected in sequence; the sludge input device is connected with an additive input device; the plasma gasification system includes a plasma A gasification furnace; the combustible gas combustion system includes a combustion tower with an oxygen supply pipeline; the tail gas treatment system includes a tail gas cooling system and a tail gas purification system. The dehydrated sludge to be treated is uniformly fed into the plasma gasification system through the sludge feeding device. During the sludge feeding process, the additive feeding device is used to add additives at a uniform rate in proportion. The sludge and additives are mixed evenly ...

Embodiment 2

[0032] As a preferred embodiment of the system of the present invention, a process system for plasma gasification of industrial sludge is disclosed, such as figure 1 , including a sludge input device, a plasma gasification system, a combustible gas combustion system, a heat energy recovery system and an exhaust gas treatment system connected in sequence; the sludge input device is connected with an additive input device; the plasma gasification system includes a plasma Gasifier; the combustible gas combustion system includes a combustion tower with an oxygen supply pipeline; the tail gas treatment system includes a tail gas cooling system and a tail gas purification system, and the tail gas purification system includes a dust removal device, a deodorization device and a desulfurization device . The dehydrated sludge to be treated is uniformly fed into the plasma gasification system through the sludge feeding device. During the sludge feeding process, the additive feeding devic...

Embodiment 3

[0034] As a most basic embodiment of the method of the present invention, a process for plasma gasification of industrial sludge is disclosed, including a sludge pretreatment step, a plasma gasification step, a gas treatment step and a tail gas treatment step;

[0035] In the sludge pretreatment step, the sludge is dehydrated, and the dehydrated sludge is mixed with additives and put into a plasma gasifier;

[0036] In the plasma gasification step, the heat energy generated by the plasma gun in the plasma gasification furnace discharges and arcs under high pressure and heats up to 1200-1600°C. Sludge gasification; at a temperature of 1200-1600 ° C, a small amount of air is introduced to instantly gasify the remaining organic matter (including toxic and harmful organic matter) in the sludge into high calorific value combustible gases such as hydrogen, methane, carbon monoxide, inorganic matter and The additives melt at high temperature to form a glass body.

[0037] The combus...

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Abstract

The invention discloses a process system and a method for plasma gasification of industrial sludge and belongs to the technical field of harmless disposal of industrial sludge. The process system comprises a sludge adding device, a plasma gasification system, a combustible gas combustion system and a tail gas treatment system which are sequentially connected; an additive adding device is connectedwith the sludge adding device; the plasma gasification system comprises a plasma gasifier; the combustible gas combustion system comprises a combustion tower with an oxygen supply pipeline; the tailgas treatment system comprises a tail gas cooling system and a tail gas purifying system.

Description

technical field [0001] The invention belongs to the technical field of harmless disposal of industrial sludge, and in particular relates to a process system and method for plasma gasification of industrial sludge. Background technique [0002] Industrial sludge refers to the sludge produced by the sewage treatment station in the process of treating industrial sewage. The sludge is semi-solid or solid after flocculation and dehydration. The moisture content of the sludge is as high as 70-90%, or even higher, and generally every 1000m 3 Sewage will produce nearly 5 tons of sludge. According to different types of industrial sewage, the types and amounts of toxic and harmful substances in the sludge are different. Harmful substances, if they cannot be thoroughly disposed of, pollution will always exist. Therefore, resource disposal of industrial sludge can not only reduce land occupation, but also reduce environmental pollution. [0003] In the early days when the country did...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C02F11/00F23G7/06F23G5/46
CPCF23G5/46F23G7/06C10B53/00C02F11/00F23G2206/203F23G2209/14Y02E20/12
Inventor 何洪卢小冬刘源肖菊花王磊陶中林奂安开罗德旋刘剑陈俊
Owner CHENGDU YUANYONG TECH DEV
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