CN103194596A - Harmless resource utilization method for steel rolling oil sludge - Google Patents
Harmless resource utilization method for steel rolling oil sludge Download PDFInfo
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- CN103194596A CN103194596A CN2013101353449A CN201310135344A CN103194596A CN 103194596 A CN103194596 A CN 103194596A CN 2013101353449 A CN2013101353449 A CN 2013101353449A CN 201310135344 A CN201310135344 A CN 201310135344A CN 103194596 A CN103194596 A CN 103194596A
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- containing sludge
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Abstract
The invention discloses a harmless resource utilization method for steel rolling oil sludge. The method comprises a filter pressing process, a drying process and a sintering process. The method comprises the following steps of: firstly, carrying out oil-water and iron-contained sludge separation on the steel rolling oil sludge in a filter press; then, drying the iron-contained sludge by using hot air in a drying tower, wherein part of iron-contained sludge flowing out of the drying tower along with the hot air enters the drying tower again through a cyclone separator; and finally, uniformly mixing the dried iron-contained sludge and sintering raw materials, granulating, delivering the granules into a trolley, and sintering to form sintering ores. The invention aims to provide the harmless resource utilization method for steel rolling oil sludge by using steel sintering equipment; and by using the method, the safe, clean and efficient treatment on the steel rolling oil sludge is realized.
Description
Technical field
The harmless resource utilization that the present invention relates to a kind of steel rolling greasy filth is utilized method, belongs to harmless treatment and the application technology as the second resource field of Hazardous wastes.
Background technology
Steel rolling greasy filth is oil, water, the iron containing sludge three-phase mixture that produces in the steel rolling process, and outward appearance is grey black, slightly redly.According to " national Hazardous wastes register " (2008), this material belongs to mineral waste oil (HW08) class Hazardous wastes.Therefore must carry out appropriate processing to steel rolling greasy filth, realize resource reutilization when realizing the environmental protection purpose.
The treatment process of steel rolling greasy filth mainly contains burning method and distillation de-oiling method at present.Burning method refers to steel rolling greasy filth is burned, and the high temperature that the utilization burning produces and oxidizing atmosphere are with the Fe in the steel rolling greasy filth
3O
4Be oxidized to Fe
2O
3, pass through processes such as crushing and classification, wet separation, chemical purification again, production purity is greater than 98% Fe
2O
3These class methods are not carried out the efficient recovery of oil in the steel rolling greasy filth, and are easy to generate secondary pollution in the combustion processes.Distillation de-oiling method refers to by the mode of distillation the collection of the oil in the steel rolling greasy filth is used, and these class methods are had relatively high expectations to distillation plant, and the iron containing sludge in the steel rolling greasy filth are not effectively utilized.
The present invention proposes a kind of harmless resource utilization of steel rolling greasy filth and utilizes method, can realize resource reutilization when realizing the environmental protection purpose.
Summary of the invention
Technical problem: the present invention is intended to propose a kind of harmless resource utilization of steel rolling greasy filth and utilizes method, realizes steel rolling greasy filth safety, clean and efficient processing.
Technical scheme: steel rolling greasy filth harmless resource utilization of the present invention utilizes method at first to realize separating of profit and iron containing sludge by filter pressing; Adopt the mode of indirect heating then, namely use sinter fume waste heat heats cold air, remove dry iron containing sludge with the warm air after the heating again; Iron containing sludge and raw materials for sintering through super-dry form sintering mixing material at the mixing machine mixed pelletization, through sintering, finally form agglomerate.
Use sinter fume waste heat heats cold air, go the concrete grammar of dry iron containing sludge to be with the warm air after the heating again; Heat exchange is finished the high temperature sintering flue gas to the heating of freezing air, part high temperature sintering flue gas is through T-valve (16) inflow heat exchanger (17), at interchanger (17) freezing air is added the thermosetting warm air, the flow of air is by flow valve (18) and the common control of air induced draft fan (21), the low-temperature sintering flue gas that comes out from interchanger (17) comes back to the sinter fume main pipe line and goes, and is extracted out by flue gas vacuum fan (19) and enters atmosphere from chimney (20); Drying nest is finished warm air to the drying of iron containing sludge, warm air comes out from interchanger (17), enter drying tower (3) with the dry iron containing sludge of the mode of direct contact mixed heat transfer, part flows out drying tower (3) with warm air iron containing sludge turns back in the ash bin (5) after cyclonic separator (4) separates, and the iron containing sludge in the ash bin (5) is accumulated under the effect of self gravitation and returns drying tower (3) again;
Described iron containing sludge and the raw materials for sintering quality proportioning when the mixing machine mixed pelletization is:
Iron containing sludge 1%～2%
Raw materials for sintering 98%～99%.
Beneficial effect: the harmless resource utilization of a kind of steel rolling greasy filth that the present invention proposes utilizes method to have following characteristic and advantage:
(1) method of the present invention has realized separating of iron containing sludge and profit in the steel rolling greasy filth, oleaginousness is higher in the profit, can recycling, iron containing sludge raw material direct and that sintering process is required carries out carrying out sintering behind the mixed pelletization, in the inner harmless treatment that realizes steel rolling greasy filth of steel industry, realized the recycling of resource;
(2) method of the present invention utilizes sinter fume to add warm air, through the dry air iron containing sludge of heating, has realized that the recycling of flue gas heat has avoided sinter fume convection drying iron containing sludge to pollute sintering mixing material simultaneously;
(3) method of the present invention is utilized agglomerating plant harmless treatment steel rolling greasy filth refuse, with a large amount of objectionable impurities combustion decomposition in the steel rolling greasy filth, reaches purpose innoxious, environmental protection;
(4) method of the present invention does not need the landfill waste material, has both saved land resources, is conducive to environmental protection again;
(5) method applicability of the present invention is stronger, oleaginousness, water content and silt content in the steel rolling greasy filth of steel rolling process generation there are not strict restriction, simple to operate, with low cost, realize the resources effective recycling, had tangible environmental benefit, economic benefit and social benefit.
Description of drawings
Fig. 1 is that the harmless resource utilization of a kind of steel rolling greasy filth of the present invention is utilized the method synoptic diagram.
Have among Fig. 1: pressure filter 1, transmission slot 2, drying tower 3, cyclonic separator 4, ash bin 5, transmission slot 6, feed hopper 7, transmission slot 8, mixing machine 9, transport tape 10, lighter for ignition 11, chassis 12, crusher 13, screening plant 14, fly-ash separator 15, T-valve 16, interchanger 17, flow valve 18, flue gas vacuum fan 19, chimney 20, air induced draft fan 21.
Fig. 2 is that the harmless resource utilization of a kind of steel rolling greasy filth of the present invention is utilized method flow diagram.
Embodiment
The harmless resource utilization of steel rolling greasy filth of the present invention is utilized method, mainly is made up of pressure-filtering process, drying process and sintering process.
Pressure-filtering process is steel rolling greasy filth refuse to be removed profit and with the iron containing sludge pressure filtration molding.Major equipment is pressure filter in the pressure-filtering process, and pressure filter makes iron containing sludge and oily water separation with the pressurization of steel rolling greasy filth refuse and filtration, then with iron containing sludge compression moulding, and gives drying process.
Drying process is that the iron containing sludge that pressure-filtering process is sent here is carried out drying, and drying process is by heat exchange and dry the composition.Heat exchange is mainly finished the high temperature sintering flue gas to the heating of freezing air, and interchanger is installed in after the fly-ash separator, and it mainly acts on is to utilize the high temperature sintering flue gas that freezing air is heated, and forms warm air.Hot air temperature is regulated the flow that enters interchanger high temperature sintering flue gas by T-valve and is controlled, and air flow quantity and flow velocity are controlled jointly by flow valve and air induced draft fan.Drying is mainly finished warm air to the drying of iron containing sludge, and drying tower is installed in after the interchanger.Warm air comes out from interchanger, enter the dry iron containing sludge of mode that drying tower mixes mutually with direct contact, part flows out drying tower with warm air iron containing sludge turns back in the ash bin after cyclonic separator separates, and the iron containing sludge in the ash bin is accumulated under a certain amount of situation can return drying tower again under the effect of self gravitation.
The main effect of sintering process is that iron containing sludge and raw materials for sintering (fuel, flux and powdered iron ore) mixed pelletization are formed agglomerate by nodulizing, is made of feed hopper, mixing machine, chassis and lighter for ignition etc.Iron containing sludge through super-dry enters feed hopper by transmission slot by drying process, forms sintering mixing material at mixing machine and the abundant mixed pelletization of raw materials for sintering, and sintering mixing material is sent into chassis and carried out sintering, finally forms agglomerate.
Specify the realization of technological line of the present invention and target below with reference to Fig. 1 and Fig. 2: the basic ideas of the inventive method are as follows: pressure-filtering process carries out in pressure filter 1, transmission slot 2 is equipped with at pressure filter middle outlet place, by transmission slot 2 iron containing sludge is sent into drying tower 3.Described iron containing sludge and the raw materials for sintering quality proportioning when the mixing machine mixed pelletization is:
Iron containing sludge 1%～2%
Raw materials for sintering 98%～99%.
In interchanger 17, pass through high temperature sintering flue gas heating freezing air, the flow of air and flow velocity are by flow valve 18 and the 21 common controls of air induced draft fan, in order to guarantee the temperature energy complete drying iron containing sludge of warm air, enter the high temperature sintering flue gas flow of interchanger 17 by T-valve 16 controls, T-valve 16 is installed on after the fly-ash separator 15, guarantee that high temperature sintering dust in flue gas content is lower, avoided washing away of dust heat exchanging device 17, the low-temperature sintering flue gas that comes out from interchanger 17 comes back to the sinter fume main pipe line and goes, and is extracted out by flue gas vacuum fan 19 and enters atmosphere from chimney 20.
Warm air comes out from interchanger 17, enter the dry iron containing sludge of mode that drying tower 3 mixes mutually with direct contact, part flows out drying tower 3 with warm air iron containing sludge turns back in the ash bin 5 after cyclonic separator 4 separates, and the iron containing sludge in the ash bin 5 runs up under a certain amount of situation can return drying tower 3 again under the effect of self gravitation.Dry iron containing sludge enters feed hopper 7 by transmission slot 6, raw materials for sintering enters mixing machine 9 according to the certain quality proportioning by transmission slot 8 with the iron containing sludge of drying in the feed hopper 7, raw materials for sintering forms sintering mixing material with the iron containing sludge mixed pelletization of drying in mixing machine 9, sintering mixing material is sent into chassis 12 by transport tape 10 transmission, after lighter for ignition 11 igniting, sintering mixing material on the chassis 12 begins to carry out sintering, after sintering finishes, agglomerate sieves at screening plant 14 then in crusher 13 fragmentations.Sinter fume is then finally extracted out by flue gas vacuum fan 19 and is entered atmosphere from chimney 20.
Claims (3)
1. a steel rolling greasy filth harmless resource utilization is utilized method, it is characterized in that this method at first realizes separating of profit and iron containing sludge by filter pressing; Adopt the mode of indirect heating then, namely use sinter fume waste heat heats cold air, remove dry iron containing sludge with the warm air after the heating again; Iron containing sludge and raw materials for sintering through super-dry form sintering mixing material at the mixing machine mixed pelletization, through sintering, finally form agglomerate.
2. a kind of steel rolling greasy filth harmless resource utilization according to claim 1 is utilized method, it is characterized in that using sinter fume waste heat heats cold air, goes the concrete grammar of dry iron containing sludge to be with the warm air after the heating again; Heat exchange is finished the high temperature sintering flue gas to the heating of freezing air, part high temperature sintering flue gas is through T-valve (16) inflow heat exchanger (17), at interchanger (17) freezing air is added the thermosetting warm air, the flow of air is by flow valve (18) and the common control of air induced draft fan (21), the low-temperature sintering flue gas that comes out from interchanger (17) comes back to the sinter fume main pipe line and goes, and is extracted out by flue gas vacuum fan (19) and enters atmosphere from chimney (20); Drying nest is finished warm air to the drying of iron containing sludge, warm air comes out from interchanger (17), enter drying tower (3) with the dry iron containing sludge of the mode of direct contact mixed heat transfer, part flows out drying tower (3) with warm air iron containing sludge turns back in the ash bin (5) after cyclonic separator (4) separates, and the iron containing sludge in the ash bin (5) is accumulated under the effect of self gravitation and returns drying tower (3) again.
3. a kind of steel rolling greasy filth harmless resource utilization according to claim 1 is utilized method, it is characterized in that described iron containing sludge and the raw materials for sintering quality proportioning when the mixing machine mixed pelletization is:
Iron containing sludge 1%～2%
Raw materials for sintering 98%～99%.
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| CN201310135344.9A CN103194596B (en) | 2013-04-17 | 2013-04-17 | Harmless resource utilization method for steel rolling oil sludge |
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| CN201310135344.9A CN103194596B (en) | 2013-04-17 | 2013-04-17 | Harmless resource utilization method for steel rolling oil sludge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280973A (en) * | 2020-11-02 | 2021-01-29 | 宝钢湛江钢铁有限公司 | Method for co-processing emulsified oil sludge by sintering system |
| CN112876022A (en) * | 2021-01-19 | 2021-06-01 | 重庆科技学院 | Utilize thermosetting carrier to handle pyrolysis device of steel rolling fatlute |
| CN113881821A (en) * | 2021-08-23 | 2022-01-04 | 浙江省工业设计研究院有限公司 | Novel process method for cooperatively treating iron hazardous waste briquettes by blast furnace |
| CN114892006A (en) * | 2022-05-17 | 2022-08-12 | 宝武集团环境资源科技有限公司 | Method and system for treating oil-containing muddy water of rolled steel by rotary hearth furnace |
| CN114940569A (en) * | 2022-05-26 | 2022-08-26 | 马鞍山钢铁股份有限公司 | Drying and resource utilization method for oil-containing hot-rolled sludge |
Citations (3)
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| JPH116019A (en) * | 1997-06-16 | 1999-01-12 | Nippon Steel Corp | Treatment of oil-containing sludge and device thereof |
| CN102433437A (en) * | 2011-10-26 | 2012-05-02 | 惠州Tcl环境科技有限公司 | Heavy metal sludge recycling and innocent treatment method |
| CN102923719A (en) * | 2012-10-29 | 2013-02-13 | 无锡恒诚硅业有限公司 | Dry tail gas waste heat recovery system for white carbon black production |
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2013
- 2013-04-17 CN CN201310135344.9A patent/CN103194596B/en active Active
Patent Citations (3)
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| JPH116019A (en) * | 1997-06-16 | 1999-01-12 | Nippon Steel Corp | Treatment of oil-containing sludge and device thereof |
| CN102433437A (en) * | 2011-10-26 | 2012-05-02 | 惠州Tcl环境科技有限公司 | Heavy metal sludge recycling and innocent treatment method |
| CN102923719A (en) * | 2012-10-29 | 2013-02-13 | 无锡恒诚硅业有限公司 | Dry tail gas waste heat recovery system for white carbon black production |
Non-Patent Citations (1)
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|---|
| 姜曦等: "含铁尘泥在烧结生产中高效使用技术研究", 《科技导报》, vol. 29, no. 32, 31 December 2011 (2011-12-31), pages 52 - 55 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280973A (en) * | 2020-11-02 | 2021-01-29 | 宝钢湛江钢铁有限公司 | Method for co-processing emulsified oil sludge by sintering system |
| CN112876022A (en) * | 2021-01-19 | 2021-06-01 | 重庆科技学院 | Utilize thermosetting carrier to handle pyrolysis device of steel rolling fatlute |
| CN113881821A (en) * | 2021-08-23 | 2022-01-04 | 浙江省工业设计研究院有限公司 | Novel process method for cooperatively treating iron hazardous waste briquettes by blast furnace |
| CN114892006A (en) * | 2022-05-17 | 2022-08-12 | 宝武集团环境资源科技有限公司 | Method and system for treating oil-containing muddy water of rolled steel by rotary hearth furnace |
| CN114940569A (en) * | 2022-05-26 | 2022-08-26 | 马鞍山钢铁股份有限公司 | Drying and resource utilization method for oil-containing hot-rolled sludge |
| CN114940569B (en) * | 2022-05-26 | 2023-10-27 | 马鞍山钢铁股份有限公司 | Oil-containing hot-rolled sludge drying and resource utilization method |
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| CN103194596B (en) | 2014-09-03 |
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