Pretreatment system used before incineration treatment of oil-containing waste liquid of steel rolling system
A pretreatment and waste liquid technology, applied in the direction of metallurgical wastewater treatment, filtration treatment, multi-stage water treatment, etc., can solve the problems of insufficient combustion of oil, sufficient combustion effect, and unsatisfactory purification effect, etc., to improve Effect of demulsification treatment, less coagulation, and effect of maintaining conveying ability
Pending Publication Date: 2022-06-28
YANGCHUN NEW STEEL CO LTD
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[0007] The current pretreatment operation of oily waste liquid before incineration is relatively simple, which cannot cause the oil in the waste liquid to be fully burned and fully burned during the incineration process, and the purification effect is not ideal; therefore, the present invention proposes a It is used in the pretreatment system before incineration and disposal of oily waste liquid in steel rolling system to solve the deficiencies in the existing technology
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[0027] In order to deepen the understanding of the present invention, the present invention will be described in further detail below with reference to the embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0028] according to figure 1 As shown, this embodiment proposes a pretreatment system for incineration and disposal of oily waste liquid in rolling system, and a pretreatment system for incineration and disposal of oily waste liquid in rolling system, which is characterized in that it includes a preheating system, a pretreatment system Intercepting unit, impurity removing unit, primary demulsification unit, secondary demulsification unit and flocculation unit, the pre-intercepting unit, impurity removing unit, primary demulsification unit, secondary demulsification unit and flocculation unit are in order Connected through a conveying pipe and connected to the inci...
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The invention discloses a pretreatment system used before incineration treatment of oily waste liquid of a steel rolling system, which relates to the technical field of metallurgical wastewater treatment and comprises a preheating system, a front interception unit, an impurity removal unit, a first-stage demulsification unit, a second-stage demulsification unit and a flocculation unit, the front interception unit, the impurity removal unit, the first-stage demulsification unit, the second-stage demulsification unit and the flocculation unit are sequentially connected through conveying pipes and are connected with the incineration disposal system; by arranging the front interception unit, the impurity removal unit, the first-stage demulsification unit, the second-stage demulsification unit and the flocculation unit, floating matters, suspended matters and magnetic metal impurities in the oil-containing waste liquid of the steel rolling system can be effectively removed, the first-stage demulsification unit adopts a W25 demulsifier, and the removal rate of COD in the oil-containing waste liquid of the steel rolling system reaches 95% or above; the oil content is obviously reduced, and the oil removal rate reaches 99.17%.
Description
technical field [0001] The invention relates to the technical field of metallurgical wastewater treatment, in particular to a pretreatment system for incineration and disposal of oily waste liquid in a rolling system. Background technique [0002] Rolling is a pressure processing process that uses rolls to roll metal billets into sheets of various specifications; emulsions are usually used to cool and lubricate the rolled pieces during the steel rolling process. The rolling emulsion requires good cooling and lubricating properties, chemical stability and anti-rust properties. It is based on mineral oil and adds various additives to form a rust inhibitor, emulsifier, defoamer, antioxidant, etc., Mineral oil-water mixture with stable chemical properties; rolling emulsion will be subjected to high temperature and oxidation during use, and the invading metal powder and moisture will gradually deteriorate the oil, so it must be replaced after a certain period of use. ; The waste...
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IPC IPC(8): C02F9/12C02F103/16
CPCC02F9/00C02F1/00C02F1/40C02F1/001C02F1/5281C02F1/66C02F1/48C02F2303/14C02F2301/08C02F2103/16C02F1/5236
Inventor 朱国俊王长振高耀廖彪
Owner YANGCHUN NEW STEEL CO LTD