Cold rolling oil sludge co-processing system and method

By heating and fluidizing, separating solids and liquids and dehydrating cold-rolled sludge, and combining quantitative distribution and multi-process collaborative treatment, low-viscosity transportation and resource utilization of cold-rolled sludge have been achieved, solving the problem of viscosity control and resource utilization of cold-rolled sludge, and ensuring viscosity-free accumulation and resource utilization within the system.

CN122212426APending Publication Date: 2026-06-16SHOUGANG GROUP CO LTD
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Patent Information

Application Number
CN202610264687.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-05
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing technologies have failed to effectively address the issues of high viscosity flow barriers in cold-rolled sludge, precise control of multi-process synergistic ratios, and odor containment throughout the entire process, making it difficult to achieve closed-loop, full-scale, and harmless resource utilization of cold-rolled sludge within steel enterprises.

Method used

The cold-rolled sludge is subjected to heating-fluidization, solid-liquid separation and dehydration treatment by a pretreatment unit. Stable conveying in a low-viscosity state is achieved through a quantitative distribution unit. In the multi-process collaborative unit, the fluidized cold-rolled sludge is injected in a small proportion into the coking, sintering, cold solidification and auxiliary combustion processes. Temperature is maintained by a fully electrically heated pipeline and a flow regulating valve is interlocked to control viscosity.

Benefits of technology

This technology transforms cold-rolled sludge from high-viscosity hazardous waste into a low-temperature fluid fuel/raw material that can be transported over long distances via pipelines, accurately measured, and utilized as a resource. It solves the viscosity problem of cold-rolled sludge and ensures that there is no high-viscosity accumulation at the end of the system and that it can be utilized as a resource.

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Abstract

The invention relates to a cold-rolled oil sludge co-processing system and method. The system comprises: a pretreatment unit, wherein the pretreatment unit is used for performing heating-fluidization treatment, solid-liquid separation treatment and dehydration treatment on the cold-rolled oil sludge; the quantitative distribution unit comprises an intermediate storage tank, a delivery pump, a flow regulating valve and a whole-course electric heat tracing pipeline; and the multi-process co-processing unit comprises a coking process material receiving point, a sintering process material receiving point, a cold consolidation process material receiving point and an auxiliary combustion process material receiving point. The pre-processing unit performs ''unlocking'' viscosity reduction first, the quantitative distribution unit then performs ''locking'' low viscosity, the multi-process cooperation unit finally performs ''zero'' viscosity, and the pre-processing unit, the quantitative distribution unit and the multi-process cooperation unit are connected in sequence to form a complete technical chain of ''viscosity reduction-stable transportation-full consumption''. The cold-rolled oil sludge is converted from high-viscosity hazardous waste into low-temperature fluid fuel / raw material which can be conveyed by a long-distance pipeline, can be accurately metered and can be recycled.
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