CN1579972A - Method and equipment system for treating oil-containing iron scale for steel rolling - Google Patents
Method and equipment system for treating oil-containing iron scale for steel rolling Download PDFInfo
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- CN1579972A CN1579972A CNA031499643A CN03149964A CN1579972A CN 1579972 A CN1579972 A CN 1579972A CN A031499643 A CNA031499643 A CN A031499643A CN 03149964 A CN03149964 A CN 03149964A CN 1579972 A CN1579972 A CN 1579972A
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- iron scale
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- waste oil
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Abstract
The invention discloses an approach to recycle waste oil of steel rolling iron scale and its equipment system. It relates to processing technology and equipment of steel rolling sludge, especially the waster oil recycling approach and equipment system of steel rolling iron scale. Character of the invention is that firstly vaporize to remove moisture, then remove waste oil using low-temperature distillation, and finally, reach the target of cleaning iron scale and recycling waste oil of iron scale. The equipment is made up with desiccation dehydration system, microtherm deoiling system and waste oils recycling system. Merits of the invention are that it can avoid soot and water body pollutant, recycle waste oils and clean deoiling iron scale can be used as deep-processing materials.
Description
Technical field
The invention belongs to the treatment technology and the apparatus field of steel rolling mud, relate in particular to steel scale of steel rolling waste oil with the method and apparatus system of receiving.
Technical background
Steel billet (steel ingot) the heating and the operation of rolling in, surperficial oxidized generation iron scale (also claiming iron scale).Most of iron scale of output and hydraulic efficiency oil, gear grease, power lubrication wet goods that milling train spills together pour eddy flow well or horizontal flow basin by the ditch on the rolling line.Because iron scale is loose porous, has absorbed a large amount of water and oil in this process, so just become the moisture iron scale of oil-containing with the iron scale of pulling outward transport out of grabbing bucket.The moisture iron scale of the oil-containing that produces in the rolling process is a kind of of Iron And Steel Industry consubstantiality waste, handles bad meeting and causes environmental pollution, mainly is that greasy dirt is to phreatic pollution.The iron scale iron-holder is higher, and other foreign matter contents are less, is actually a kind of high-quality resource with extensive use.Iron scale has following several processing usually and utilizes mode: (1) does the application of oxygenant in iron alloy is produced.(2) in Electric furnace steel making, remove the oxygenant of P, C, Si, Mn.(3) produce Chemicals, as ferrous sulfate and iron(ic) chloride etc.(4) preparation iron pigment.(5) be used to produce permanent-magnet ferrite material.(6) produce reduced iron powder.Therefore, the deep processing and utilization technological development of iron scale receives much attention.The iron scale deep processing and utilization generally all requires iron scale is done the deoiling, dewatering pre-treatment.In the existing iron scale deoiling, dewatering pretreatment process, generally adopt chemical method and burning method two class technology.Chinese patent (patent No. CN1099010A) discloses a kind of method of utilizing steel rolling greasy filth to produce ferric oxide, and the principal feature of this method is that greasy filth is burned, and utilizes and burns the high temperature flue gas drying iron scale that produces.But this method is not recycled the waste oil in the iron scale, and the oil-containing iron scale is easy to generate secondary pollution problems such as flue dust secondary pollution and dedusting sewage in burning process.Foreign patent (DE4238280) proposes to adopt the method for adding the waste oil in the removal of surfactant iron scale, this method exists floor space bigger, needs to add chemical reagent, causes processing cost higher, greasy dirt removes not thorough, and can produce shortcomings such as new sewage etc.Patent (US5964045) proposes a kind ofly to feed 250 ℃ of hot flue gases directly contact with iron scale and carry out drying and dehydrating in rotary kiln, and then adopting two sections vacuum dryers under 300 ℃ of conditions, to carry out iron scale vacuum de-oiling treatment process, batch operation is adopted in vacuum-drying in this method.The subject matter that this patent exists is to adopt 250 ℃ of flue gases directly to contact with iron scale to carry out drying and dehydrating, cause part waste oil and moisture together to evaporate easily, cause the oil pollution of transpiring moisture, and cleaning apparatus must be set, cause waste oil and fly-ash separator bonding easily, influence using and reducing dust removing effects of dust removal installation.
Summary of the invention
Ubiquity easily causes secondary pollution in the iron scale de-oiling patented technology at having now both at home and abroad at present, and iron scale waste oil can not get problems such as regeneration.The present invention proposes a kind of steel rolling oil-containing iron scale New Method for Processing, and its purpose is to provide a kind of while can avoid secondary pollution and realizes the method and apparatus system that the waste oil highly efficient regeneration utilizes.
The characteristics of this method and apparatus system are at first to adopt the external-heat disk dryer to carry out drying and dehydrating, and dust pollution and the water pollution of effectively avoiding the volatilization of airborne dust and waste oil to cause reduce the loss of waste oil simultaneously.Oil-containing iron scale behind the drying and dehydrating enters the low temperature deoiler, and deoiler adopts external-heat pipe laying vaporizer, guarantees that waste oil does not take place because temperature is too high to decompose and coking, thereby helps the oil salvage utilization.The deep fat steam that removes enters drain oil recovery equipment from the outlet of vaporizer top, utilize water coolant to take away the heat of waste oil steam indirectly, utilize cooled waste oil directly to spray and absorb waste oil steam, realize that deep fat steam all absorbs, and does not produce deep fat steam contamination problem.By aforesaid method and measure, reach the purpose that cleaner production and highly efficient regeneration utilize waste oil in the iron scale.
Above-mentioned purpose and task are achieved by the following technical solution: a kind of treatment process of steel rolling oil-containing iron scale is characterized in that performing step comprises: at first remove the moisture drying in the iron scale (1); (2) the oil-containing iron scale behind the drying and dehydrating being carried out the low-temperature distillation de-oiling handles; (3) waste oil that removes is reclaimed; (4) with the raw material of the clean iron scale after the de-oiling as further deep processing.
A kind of device systems of implementing steel rolling oil-containing iron scale treatment process, the discharge port that it is characterized in that described iron scale screw feeder links to each other with the feeding mouth of drying and dehydrating device, the discharge port of drying and dehydrating device is connected with the feeding mouth of chapelet, the discharge port of chapelet is connected with the feeding mouth of the screw feeder of low temperature deoiler, and the discharge port of screw feeder is connected with the feeding mouth that low temperature takes off the Shan device; The useless Shan vapour outlet that low temperature takes off the Shan device directly is connected with the inlet of useless Shan retrieving arrangement.
Description of drawings
Be illustrated in figure 1 as a kind of process flow sheet that steel rolling contains the device systems of Shan iron scale treatment process of implementing involved in the present invention.
Wherein: 1. screw feeder; 2. drying and dehydrating device; 3. chapelet; 4. low temperature deoiler; 5. drain oil recovery equipment; 6. screw feeder; 7. waste oil vapour outlet.
Embodiment
A kind of steel rolling oil-containing iron scale treatment process that the present invention relates to, implementation step comprises: at first remove the moisture drying in the iron scale (1); (2) the oil-containing iron scale behind the drying and dehydrating being carried out the low-temperature distillation de-oiling handles; (3) waste oil that removes is reclaimed; (4) with the raw material of the clean iron scale after the de-oiling as further deep processing.Described iron scale drying and dehydrating temperature range is controlled in the temperature range (100 ℃-200 ℃) that waste oil comes to life below the temperature and the moisture boiling point is above.It is above with below the charing coking temperature that described iron scale distillation de-oiling temperature is controlled at boiling temperature, and its temperature range is between 350 ℃-400 ℃.Waste oil reclaims and adopts waste oil directly to spray absorption and the indirect method that combines of cooling off of water, utilizes the waste oil that reclaims directly to spray the hot waste oil steam of absorption, utilizes the heat in the indirect cooling and absorbing waste oil of the water steam.
The device systems of a kind of steel rolling oil-containing of the enforcement that the present invention relates to iron scale treatment process is described below in conjunction with Fig. 1: the moisture iron scale of oil-containing adds drying and dehydrating device 2 through screw feeder 1 and carries out the drying and dehydrating processing, and the anhydrous iron scale after the processing adds low temperature deoilers 4 by chapelet 3 and carries out the de-oiling processing; The deep fat steam that de-oiling produces enters drain oil recovery equipment 5 and recycles.
The equipment connection situation of total system is described below: the discharge port of screw feeder 1 links to each other with the feeding end of drying and dehydrating device 2, the discharge port of drying and dehydrating device 2 is connected with the feeding mouth of chapelet 3, the discharge port of chapelet 3 is connected with the feeding mouth of the screw feeder 6 of low temperature deoiler 4, and the discharge port of screw feeder 6 is connected with the feeding mouth of low temperature deoiler 4; The waste oil vapour outlet 7 of low temperature deoiler 4 directly is connected with the inlet of drain oil recovery equipment 5.Described drying and dehydrating device 2 adopts the disk dryer of outer heating.Described iron scale low temperature deoiler 4 adopts external-heat pipe laying vaporizer, the thermal source of this vaporizer can adopt electrically heated or hot flue gas heating, arrange stainless steel tube by fork row mode in the vaporizer, become popular in the pipe flue gas or plug-in heating rod are walked oil-containing iron scale material outside the pipe.Described drain oil recovery equipment 5 belongs to vertical tubular heat exchange type, and deep fat steam is walked between tubulation, and water coolant is walked in the pipe, at the cooled waste oil of interchanger top spray.
Claims (8)
1. the treatment process of a steel rolling oil-containing iron scale, it is characterized in that: performing step comprises: at first remove the moisture drying in the iron scale (1); (2) the oil-containing iron scale behind the drying and dehydrating being carried out the low-temperature distillation de-oiling handles; (3) waste oil that removes is reclaimed; (4) with the raw material of the clean iron scale after the de-oiling as further deep processing.
2. contain the treatment process of Shan iron scale according to the described a kind of steel rolling of claim 1, it is characterized in that: described iron scale drying and dehydrating temperature range is controlled in 100 ℃-200 ℃.
3. according to the treatment process of the described a kind of steel rolling oil-containing iron scale of claim 1, it is characterized in that: described iron scale distillation de-oiling temperature is controlled between 350 ℃-400 ℃.
4. according to the treatment process of the described a kind of steel rolling oil-containing iron scale of claim 1, it is characterized in that: described waste oil reclaims and adopts waste oil directly to spray absorption and the indirect method that combines of cooling off of water, utilize the waste oil that reclaims directly to spray and absorb hot waste oil steam, utilize the heat in the indirect cooling and absorbing waste oil of the water steam.
5. device systems of implementing steel rolling oil-containing iron scale treatment process, it is characterized in that: the discharge port of described iron scale screw feeder (1) links to each other with the feeding mouth of drying and dehydrating device (2), the discharge port of drying and dehydrating device (2) is connected with the feeding mouth of chapelet (3), the discharge port of chapelet (3) is connected with the feeding mouth of the screw feeder (6) of low temperature deoiler (4), and the discharge port of screw feeder (6) is connected with the feeding mouth of low temperature deoiler (4); The waste oil vapour outlet (7) of low temperature deoiler (4) directly is connected with the inlet of drain oil recovery equipment (5).
6. according to the described a kind of device systems of implementing steel rolling oil-containing iron scale treatment process of claim 5, it is characterized in that: described drying and dehydrating device (2) adopts the disk dryer of outer heating.
7. according to the described a kind of device systems of implementing steel rolling oil-containing iron scale treatment process of claim 5, it is characterized in that: described iron scale low temperature deoiler (4) adopts external-heat pipe laying vaporizer, the thermal source of this vaporizer can adopt electrically heated or hot flue gas heating, arrange stainless steel tube by fork row mode in the vaporizer, become popular in the pipe flue gas or plug-in heating rod, the outer oil-containing iron scale material of walking of pipe.
8. according to the described a kind of device systems of implementing steel rolling oil-containing iron scale treatment process of claim 5, it is characterized in that: the same receiving apparatus of described waste oil (5) belongs to vertical tubular heat exchange type, deep fat steam is walked between tubulation, and water coolant is walked in the pipe, at the cooled waste oil of interchanger top spray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031499643A CN1270989C (en) | 2003-08-01 | 2003-08-01 | Method and equipment system for treating oil-containing iron scale for steel rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031499643A CN1270989C (en) | 2003-08-01 | 2003-08-01 | Method and equipment system for treating oil-containing iron scale for steel rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1579972A true CN1579972A (en) | 2005-02-16 |
| CN1270989C CN1270989C (en) | 2006-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031499643A Expired - Lifetime CN1270989C (en) | 2003-08-01 | 2003-08-01 | Method and equipment system for treating oil-containing iron scale for steel rolling |
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| CN (1) | CN1270989C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212682A (en) * | 2011-05-25 | 2011-10-12 | 衡阳华菱钢管有限公司 | Treatment method for sintering oil-bearing graphite sludge in ingredient ore |
| CN102336447A (en) * | 2011-06-27 | 2012-02-01 | 哈尔滨汽轮机厂辅机工程有限公司 | Seawater desalination primary evaporator using ferritic stainless steel tubes |
| CN104071964A (en) * | 2013-03-27 | 2014-10-01 | 鞍钢股份有限公司 | Steel rolling oil sludge drying method and device |
| CN105753066A (en) * | 2014-12-15 | 2016-07-13 | 武丽霞 | Test method for recycling iron oxide powder and waste oil from steel rolling emulsion oil sludge |
| CN108659945A (en) * | 2017-03-30 | 2018-10-16 | 宝山钢铁股份有限公司 | A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion |
-
2003
- 2003-08-01 CN CNB031499643A patent/CN1270989C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212682A (en) * | 2011-05-25 | 2011-10-12 | 衡阳华菱钢管有限公司 | Treatment method for sintering oil-bearing graphite sludge in ingredient ore |
| CN102212682B (en) * | 2011-05-25 | 2014-06-25 | 衡阳华菱钢管有限公司 | Treatment method for sintering oil-bearing graphite sludge in ingredient ore |
| CN102336447A (en) * | 2011-06-27 | 2012-02-01 | 哈尔滨汽轮机厂辅机工程有限公司 | Seawater desalination primary evaporator using ferritic stainless steel tubes |
| CN104071964A (en) * | 2013-03-27 | 2014-10-01 | 鞍钢股份有限公司 | Steel rolling oil sludge drying method and device |
| CN104071964B (en) * | 2013-03-27 | 2017-02-22 | 鞍钢股份有限公司 | Steel rolling oil sludge drying method and device |
| CN105753066A (en) * | 2014-12-15 | 2016-07-13 | 武丽霞 | Test method for recycling iron oxide powder and waste oil from steel rolling emulsion oil sludge |
| CN108659945A (en) * | 2017-03-30 | 2018-10-16 | 宝山钢铁股份有限公司 | A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion |
| CN108659945B (en) * | 2017-03-30 | 2021-08-17 | 宝山钢铁股份有限公司 | Magnetic filtration type impurity treatment method for cold rolling unit emulsion |
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| Publication number | Publication date |
|---|---|
| CN1270989C (en) | 2006-08-23 |
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Effective date of registration: 20090313 Address after: Shijingshan District Shougang Technology Research Institute, Beijing 100041, China Co-patentee after: BEIJING SHOUGANG HUAXIA ENGINEERING TECHNOLOGY Co.,Ltd. Patentee after: SHOUGANG Corp. Address before: Shijingshan District Shougang Technology Research Institute, Beijing 100041, China Patentee before: SHOUGANG Corp. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Beijing Shijingshan District Shougang Technical Research Institute Co-patentee after: BEIJING SHOUGANG HUAXIA ENGINEERING TECHNOLOGY Co.,Ltd. Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Beijing Shijingshan District Shougang Technical Research Institute Co-patentee before: BEIJING SHOUGANG HUAXIA ENGINEERING TECHNOLOGY Co.,Ltd. Patentee before: SHOUGANG Corp. |
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Granted publication date: 20060823 |
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