Harmless treatment and resource utilization method for metal-containing pollutants

A pollutant and harmless technology, applied in the field of metal-containing pollutants treatment, can solve the problems of comprehensive treatment of metal-containing pollutants, and achieve the effects of perfect treatment, comprehensive utilization of resources, and strong applicability

Active Publication Date: 2021-05-28
北京鑫源寰宇环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above devices and methods all use pyrolysis to treat steel rolling oil sludge, most of them focus on improving the device structure and other aspects, and cannot comprehensively treat the complex characteristics of metal-containing pollutants to achieve metal-containing pollutants. Hazardous disposal and resource utilization

Method used

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  • Harmless treatment and resource utilization method for metal-containing pollutants
  • Harmless treatment and resource utilization method for metal-containing pollutants
  • Harmless treatment and resource utilization method for metal-containing pollutants

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Embodiment Construction

[0050] In conjunction with the accompanying drawings, a method for the harmless disposal and resource utilization of metal-containing pollutants includes the following steps:

[0051] (1) Dividing the metal-containing pollutants into solid metal-containing pollutants and liquid metal-containing pollutants, sending the solid metal-containing pollutants into the dry pretreatment unit, and sieving through the vibrating screen 1 in the dry pretreatment unit, The undersize is sent to the dry feeding unit, and the oversize is sent to the crusher for crushing and then continues to be screened until the screening is completed.

[0052] The liquid metal-containing pollutants are sent to the feed pool 6 in the wet pretreatment unit, first screened by the feed sieve set above the feed pool 6, and the sundries are screened out, and the sundries are sent to the crusher for crushing , into the dry feed unit II; the material after screening in the feed pool enters the wet feed unit IV.

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Abstract

The invention discloses a harmless treatment and resource utilization method for metal-containing pollutants. The method includes the following steps that the metal-containing pollutants are fed into a pretreatment unit, pretreating is conducted, the metal-containing pollutants are fed into a thermal desorption unit through a feeding unit, pyrolyzing is conducted in the thermal desorption unit, and pyrolyzed high-temperature oil gas is fed into a condensation separation unit; solid slag obtained after pyrolysis enters into a melt separation unit, a melt separation furnace is adopted in the melt separation unit to continue to heat the solid slag to 1200-1800 DEG C, produced metal elementary substances are melted into liquid and float on an upper layer, the liquid metal elementary substances are discharged out of the melt separation furnace through a molten metal outlet, and metal is obtained after cooling; and the solid slag at a lower part is discharged out of the melt separation furnace through a slag outlet, and is used as a building raw material after being cooled and crushed. According to the harmless treatment and resource utilization method for the metal-containing pollutants, two-step pyrolysis, melt separation and the like are combined, so that the metal-containing pollutants with different characteristics can be fully treated, high-added-value products such as metal resources and oil resources can be obtained, and harmless treatment and resource comprehensive utilization are achieved.

Description

technical field [0001] The invention relates to the field of metal-containing pollutant treatment, in particular to a method for harmless disposal and resource utilization of metal-containing pollutants. Background technique [0002] With the development of the national economy, we are facing more and more environmental problems. Among them, metal-containing pollutants (such as rolling oil sludge, pickling sludge, waste catalysts, etc.), if discharged directly without disposal, will cause great damage to the ecological environment of our country and threaten human health. Simultaneously, also can cause the waste of metal resource etc. [0003] At present, there are many literature reports on the treatment of metal-containing pollutants. For example, the Chinese invention patent with the patent application number of 202010393785.9 discloses a wall-scraper-type propelled steel rolling oil sludge pyrolysis carbonization treatment device and method, and the Chinese invention p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C22B7/00B02C23/16B07B1/28
CPCC22B7/004B07B1/28B02C23/16B09B3/40Y02P10/20
Inventor 张顺利张永胜孟维武
Owner 北京鑫源寰宇环保科技有限公司
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