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Flue gas purification method and device for preparing iron oxide red pigment from oil shale semicoke

A technology for oil shale semi-coke and flue gas purification, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as no production practice, complex composition, harmful environment, etc., and solve the problem of non-standard emission of flue gas Effect

Pending Publication Date: 2020-11-20
LANZHOU ENG & RES INST OF NONFERROUS METALLURGY
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Problems solved by technology

[0004] However, in the process of using oil shale semi-coke to prepare iron red pigment, smoke with complex components and harmful to the environment will be produced, and there is no production practice in related technologies for environmental protection of the above-mentioned smoke.

Method used

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  • Flue gas purification method and device for preparing iron oxide red pigment from oil shale semicoke
  • Flue gas purification method and device for preparing iron oxide red pigment from oil shale semicoke
  • Flue gas purification method and device for preparing iron oxide red pigment from oil shale semicoke

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0036] The "plurality" mentioned herein means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0037] In the embodiment of this application, for the specific field of preparing iron red pigments from oil shale semi-coke, the device 100 is used for the treatment of harmful gases generated during the preparation of iron red pigments. In the related art, there is no related flue gas treatment The scheme can be referred to. Therefore, the...

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Abstract

The invention discloses a flue gas purification method and device for preparing iron oxide red pigment from oil shale semicoke, and belongs to the field of iron oxide red pigment preparation. The device comprises a flue gas heat exchanger, a pigment recoverer, a desulfurizer, a demister and a smoke exhauster, the flue gas heat exchanger is used for carrying out heat exchange on flue gas entering from the first flue gas inlet, the flue gas heat exchanger is connected with the pigment recoverer, the pigment recoverer is used for recovering and storing smoke dust of flue gas entering from the second flue gas inlet, the pigment recoverer is connected with the desulfurizer, the desulfurizer is used for desulfurizing flue gas entering from the third flue gas inlet, the desulfurizer is connectedwith the demister, the demister is used for removing water mist from the flue gas entering from the fourth flue gas inlet, and the demister is connected with the smoke exhauster, and the smoke exhauster is used for exhausting smoke entering from the fifth smoke inlet into the atmosphere. In the embodiment of the invention, harmful flue gas is purified from multiple angles, and finally, up-to-standard emission of the flue gas is realized while energy is saved.

Description

technical field [0001] The present application relates to the field of iron red pigment preparation, in particular to a flue gas purification method and device for preparing iron red pigment from oil shale semi-coke. Background technique [0002] Oil shale refers to the oil resources contained in shale formations dominated by shale. With the shortage of petroleum resources, oil shale has been paid more and more attention as an important petroleum supplement and alternative energy source. In addition, the oil shale waste generated after the use of oil shale is also increasing year by year. [0003] According to different utilization methods, oil shale waste residue can be divided into two categories: one is oil shale semi-coke, which refers to the residue of oil shale after dry distillation; the other is oil shale ash, which refers to oil shale Waste residue produced after shale is burned to generate electricity. This application describes the utilization scenario of oil sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00B01D49/00F28D21/00
CPCB01D49/00B01D53/00B01D2257/30B01D2257/40B01D2258/0283F28D21/0014Y02P70/10
Inventor 郭键柄张亚东丁志广
Owner LANZHOU ENG & RES INST OF NONFERROUS METALLURGY
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