CN110877957A - Treatment process of emulsified oil sludge in steel mill - Google Patents
Treatment process of emulsified oil sludge in steel mill Download PDFInfo
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- CN110877957A CN110877957A CN201911002349.8A CN201911002349A CN110877957A CN 110877957 A CN110877957 A CN 110877957A CN 201911002349 A CN201911002349 A CN 201911002349A CN 110877957 A CN110877957 A CN 110877957A
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- 239000010802 sludge Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000008569 process Effects 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 48
- 239000010959 steel Substances 0.000 title claims abstract description 48
- 238000011282 treatment Methods 0.000 title claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000007789 gas Substances 0.000 claims abstract description 52
- 229910052742 iron Inorganic materials 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 239000008247 solid mixture Substances 0.000 claims abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 239000003345 natural gas Substances 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 10
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 4
- 239000002912 waste gas Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 78
- 238000006243 chemical reaction Methods 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The embodiment of the invention discloses a steel mill emulsion oil sludge treatment process, which relates to the technical field of waste separation treatment, and comprises the following steps: injecting high-temperature gas with the temperature of 450-600 ℃ into the reactor, and injecting emulsified liquid oil sludge in a steel mill into the reactor after heating, pressurizing and atomizing in sequence to perform front-side heat exchange with the high-temperature gas to form a gas-solid mixture; the gas-solid mixture enters a cyclone separator to be separated to obtain first solid iron and mixed gas; the mixed gas is liquefied by a heat exchanger and then enters an oil-water separator for oil-water separation to obtain product oil and liquefied water. The treatment process can ensure that the recovery rate of iron and oil in the emulsified oil sludge of a steel mill reaches more than 95 percent; other solid waste and waste liquid are not generated in the treatment process, no waste gas is generated in the process, and the environment is protected and reaches the standard; the treatment process has the advantages of simple process, high efficiency, strong continuity and automatic treatment, and can realize the resource utilization of the emulsified oil sludge in the steel mill.
Description
Technical Field
The embodiment of the invention relates to the technical field of waste separation treatment, and particularly relates to a treatment process of emulsified oil sludge in a steel mill.
Background
The emulsified oil sludge in steel plant is a waste containing oil and a great amount of iron oxide, is black in appearance and is characterized by containing water and oil. The emulsified oil sludge has high iron specific gravity, pungent foul smell, high viscosity and easy formation of oil sludge. The oil sludge has high viscosity and contains organic matters, and the organic matters can generate strong smog and pungent smell after being heated, can pollute the environment and are not suitable for being used by sintering. This kind of sludge is generally treated by a professional company, which results in high treatment cost, and iron and waste oil contained in the emulsion sludge cannot be recycled, which results in waste of resources.
The oil sludge recovered and treated by professional companies is mainly prepared by waste oil obtained by acidifying the oil sludge by sulfuric acid and other organic matters such as chemical alcohols and the like into fire oil. Or the oil products of diesel oil, gasoline and other refined oils are prepared by negative pressure distillation and rectification after sulfation and clay treatment. Or adopting similar compatible principle to add organic solvent to extract, then making the regenerated oil by centrifugation and distillation. These treatments mainly have the following problems:
(1) in the treatment process, new substances are required to be added, so that new solid waste (acid sludge and clay sludge) or waste liquid is continuously generated, and the environmental protection is greatly damaged.
(2) The treatment needs to consume a great deal of energy, and flammable and explosive gas is generated in the treatment process, which brings difficulty and danger to the recovery.
(3) The quality of the produced acidified oil is poor, the oil return rate is low, and the superfine iron contained in the original oil sludge cannot be extracted.
(4) Adding an extracting agent or sulfuric acid, clay and the like causes the treatment cost to be high.
(5) A large amount of bubbles generated at an excessively high acidification treatment speed are difficult to control, and the extraction of the organic matters of the clay adsorbent or the reduction of saponified iron by organic alcohol and the like needs a long time to wait, so that the efficiency is low.
(6) The process independence of the equipment is strong, and the occupied area is large. Automation and continuity cannot be effectively realized, the processing capacity is low, and the requirement of high-capacity equipment on capacity cannot be met.
Disclosure of Invention
Therefore, the embodiment of the invention provides a process for treating oil sludge in emulsion in a steel mill, which aims to solve the problems of great environmental pollution, incapability of extracting superfine iron contained in crude oil sludge, low product recovery rate, high treatment cost and the like in the conventional oil sludge treatment mode in the emulsion in the steel mill.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to a first aspect of the embodiment of the invention, the treatment process of the emulsified oil sludge in the steel mill comprises the following steps:
injecting high-temperature gas with the temperature of 450-600 ℃ into a reactor, and injecting emulsified liquid oil sludge in a steel mill into the reactor after heating, pressurizing and atomizing in sequence to exchange heat with the high-temperature gas to form a gas-solid mixture;
the gas-solid mixture enters a cyclone separator to be separated to obtain first solid iron and mixed gas;
and liquefying the mixed gas by the heat exchanger, and then feeding the liquefied gas into an oil-water separator for oil-water separation to obtain product oil and liquefied water.
Through above-mentioned technical scheme, regard as the heat supply source with high-temperature gas, utilize high temperature to reduce fatlute viscosity with steel mill emulsion oil sludge, adopt multistage booster pump cooperation atomizing nozzle to realize going into the reactor after the fatlute atomizing again and carry out the heat exchange with the high-temperature gas who sprays into in the reactor, whole process takes place mostly physical reaction, other extractants are not added to the centre, chemical agent etc. avoid substituting other material pollutions in the course of the processing, iron powder and oil oxidability are not strong under the oxygen deficiency, the quality is better, iron powder and oil can all be exquisite retrieval and utilization, the quality of product has been guaranteed.
Further, the treatment process also comprises the following steps: the product oil is collected and barreled to be continuously processed and recycled deeply; and the liquefied water is cooled and then continuously recycled.
By the technical scheme, the product oil is recycled, the resource utilization of the emulsified oil sludge in the steel mill is realized, and the liquefied water generated in the treatment process is recycled, so that the treatment process is more economical.
Further, the treatment process also comprises the following steps: recovering the first solid iron to an ash hopper.
Through the technical scheme, the recycling of the iron powder in the emulsified liquid oil sludge of the steel mill is realized. The recycled iron powder can be continuously ground to prepare the nano iron, so that the resource utilization of the emulsified oil sludge in the steel mill is realized, and the economy is high.
Further, the treatment process also comprises the following steps: the second solid iron formed in the reactor by drying is recycled to the ash hopper.
Through the technical scheme, the recycling of the iron powder in the emulsified liquid oil sludge of the steel mill is realized. The recycled iron powder can be continuously ground to prepare the nano iron, so that the resource utilization of the emulsified oil sludge in the steel mill is realized, and the economy is high. And the recovery rate of the iron sludge in the emulsion of the steel mill is improved by recovering the iron powder twice.
Further, the high-temperature gas and the heated, pressurized and atomized steel mill emulsion oil sludge are respectively and oppositely sprayed into the reactor along the tangential direction of the cylinder body of the reactor.
According to the technical scheme, the heated, pressurized and atomized steel mill emulsion oil sludge enters the reaction chamber to collide with high-speed, high-temperature and high-pressure high-temperature gas to naturally form centrifugal force to force dried solid iron to be centrifuged to the inner wall of the reactor and finally collected to the collecting device at the bottom of the reactor, so that the iron powder in the steel mill emulsion oil sludge is separated and recovered for the first time in the reactor.
Further, the high-temperature gas is formed by heating a heater or formed by natural gas without oxidation reaction.
The high-temperature gas of the present invention is not limited to a gas formed by heating with a heater or a gas formed by natural gas without oxidation reaction, but includes other high-temperature gases formed without oxidation reaction.
Further, the emulsified oil sludge in the steel mill is heated by adopting a radiation pipeline heating mode or a steam heating medium heating mode.
Further, the lower part of the reactor is in a conical structure or a horizontal cylindrical structure.
Through the technical scheme, the collection of the iron powder separated from the reactor is facilitated.
Further, the upper temperature of the cyclone separator is 345-355 ℃ and the lower temperature of the cyclone separator is 275-285 ℃.
Through above-mentioned technical scheme, can ensure cyclone's separation effect, can not make the mist that gets into cyclone take place the liquefaction phenomenon in advance.
The embodiment of the invention has the following advantages:
according to the steel mill emulsion oil sludge treatment process, high-temperature gas is used as a heat supply source, the steel mill emulsion oil sludge is heated, pressurized and atomized and then enters a reactor to exchange heat with the high-temperature gas, wherein 100-plus-150 cubic natural gas or other heat sources can treat one ton of steel mill emulsion oil sludge, most of the whole process is physical reaction, other extracting agents, chemical agents and the like are not added in the middle, pollution of other substances substituted in the treatment process is avoided, iron powder and oil products are not strong in oxidizability under oxygen exclusion, the quality is good, the iron powder and the oil can be finely recycled, and the quality of products is guaranteed. The recovery rate of iron and oil in the emulsified oil sludge of the steel mill can reach more than 95 percent by adopting the treatment process; other solid waste and waste liquid are not generated in the treatment process, no waste gas is generated in the process, and the environment is protected and reaches the standard; the treatment process has simple working procedures and high efficiency, can flexibly select the capacity of treatment equipment according to the production scale, has strong continuity and can carry out automatic treatment; the obtained oil can be flushed back to a system for use through configuration, the iron powder can be continuously ground to prepare the nano iron, the economy is high, and the resource utilization of the emulsified oil sludge in the steel mill can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1 is a process flow diagram of a process for treating oil sludge in emulsion in a steel mill according to embodiment 1 of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A process for treating emulsified oil sludge in a steel mill comprises the following steps:
injecting high-temperature gas with the temperature of 450-600 ℃ into a reactor, and injecting emulsified liquid oil sludge in a steel mill into the reactor after heating, pressurizing and atomizing in sequence to exchange heat with the high-temperature gas to form a gas-solid mixture;
the gas-solid mixture enters a cyclone separator to be separated to obtain first solid iron and mixed gas;
and liquefying the mixed gas by the heat exchanger, and then feeding the liquefied gas into an oil-water separator for oil-water separation to obtain product oil and liquefied water.
The main components of the emulsified oil sludge in the steel mill are 85-95% of liquid phase, 5-15% of solid phase and over 9.3% of viscosity. Wherein the solid phase components mainly comprise superfine iron and carbon powder, and the liquid phase mainly comprises oil, water, and iron soap after fatty acid is synthesized.
In one embodiment, the sizes of the reactor, the cyclone separator and the heat exchanger are not limited, the reactor and the number of nozzles with corresponding sizes are selected according to the size of the design capacity, the size of the selected equipment is determined according to the gas quantity, the solid quantity and the liquid quantity, and the three-dimensional vertical reactor and the cyclone separator are optimally designed to ensure the complete reaction. Preferably, the lower part of the reactor is in a conical structure or a horizontal cylindrical structure, so that the collection of the iron powder separated from the reactor is facilitated. More preferably, pressure and temperature detection devices are installed on the devices involved in the processing process, and collected pressure and temperature data are interacted with a PLC system to form an automatic and manual electric control system, so that automatic operations such as automatic feeding, automatic control of reaction rate and the like are realized, and the function of an emergency A + S is realized.
The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.
Example 1
A process for treating emulsified oil sludge in a steel mill comprises the following steps, and the process flow diagram is shown in figure 1:
injecting high-temperature gas heated by a heater and having the temperature of 450 ℃ into a reactor, and injecting emulsified oil sludge from a steel mill from an oil pool into the reactor after heating, pressurizing and atomizing in sequence to perform front-side heat exchange with the high-temperature gas to form a gas-solid mixture; the high-temperature gas and the heated, pressurized and atomized steel mill emulsion oil sludge are respectively and oppositely sprayed into the reactor along the tangential direction of the cylinder body of the reactor; the lower part of the reactor is of a conical structure;
the gas-solid mixture enters a cyclone separator to be separated to obtain first solid iron and mixed gas; recovering the first solid iron into an iron dust hopper; recovering second solid iron formed by drying in the reactor into the iron dust hopper; the upper temperature of the cyclone separator is 345-355 ℃ and the lower temperature of the cyclone separator is 275-285 ℃; the emulsified oil sludge in the steel mill is heated by adopting a steam heating medium mode;
liquefying the mixed gas by a heat exchanger, and then feeding the liquefied gas into an oil-water separator for oil-water separation to obtain product oil and liquefied water; the product oil is collected and barreled for reuse; and the liquefied water is cooled by the cooling tower and then supplied to the heat exchanger for continuous cyclic utilization.
Because the high-temperature gas flow and the steel mill emulsion oil sludge atomization equipment are cut in along the tangent line of the barrel body of the reaction chamber, centrifugal force is naturally formed to force dried solid iron to be centrifuged to the inner wall of the reactor, the dried solid iron enters the iron powder ash bucket along the conical structure at the lower part of the reactor to be separated, the oil is separated for the first time, the oil from the steel mill emulsion oil sludge in the reactor is directly distilled out, and emulsified oil emulsion breaking water is separated by the high-temperature gas and enters the solid-gas separation equipment, namely a cyclone separator, along with the gas flow, and the oil is separated for the second time. The mixed gas component after the second separation contains oil vapor, water vapor and a small amount of dust, no redundant waste gas is generated, the mixed gas component enters an oil-water separator for oil-water separation after passing through a shell-side heat exchanger, the lower liquefied water separated by the oil-water separator is cooled for recycling, and the upper product oil is collected and reused.
Example 2
A process for treating emulsified oil sludge in a steel mill comprises the following steps:
injecting high-temperature gas with the temperature of 600 ℃ formed by natural gas non-oxidation reaction into a reactor, and injecting emulsified liquid oil sludge of a steel mill into the reactor after heating, pressurizing and atomizing in sequence to exchange heat with the high-temperature gas to form a gas-solid mixture; the high-temperature gas and the heated, pressurized and atomized steel mill emulsion oil sludge are respectively and oppositely sprayed into the reactor along the tangential direction of the cylinder body of the reactor; heating the emulsified oil sludge in the steel mill by adopting a radiation pipeline heating mode; the lower part of the reactor is of a horizontal cylindrical structure;
the gas-solid mixture enters a cyclone separator to be separated to obtain first solid iron and mixed gas; recovering the first solid iron into an iron dust hopper; the second solid iron formed by drying in the reactor is recycled to the iron dust hopper through a conical part at the lower part of the reactor;
liquefying the mixed gas by a heat exchanger, and then feeding the liquefied gas into an oil-water separator for oil-water separation to obtain product oil and liquefied water; the product oil is collected and loaded into a cylinder for reuse; and the liquefied water is cooled and then continuously recycled.
In the embodiment, 150 cubic tons of natural gas per 100 times can be used for treating one ton of steel mill emulsion oil sludge, the iron and oil in the steel mill emulsion oil sludge can be recovered by adopting the treatment process of the embodiment, the recovery rate reaches over 95 percent, no other solid waste and waste liquid are generated in the treatment process, no waste gas is generated in the process, the environment is protected, the standard reaches, and the fat chain of the obtained product oil is complete.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A steel mill emulsion oil sludge treatment process is characterized by comprising the following steps:
injecting high-temperature gas with the temperature of 450-600 ℃ into a reactor, and injecting emulsified liquid oil sludge in a steel mill into the reactor after heating, pressurizing and atomizing in sequence to perform front-side heat exchange with the high-temperature gas to form a gas-solid mixture;
the gas-solid mixture enters a cyclone separator to be separated to obtain first solid iron and mixed gas;
and liquefying the mixed gas by the heat exchanger, and then feeding the liquefied gas into an oil-water separator for oil-water separation to obtain product oil and liquefied water.
2. The process of claim 1, wherein the process further comprises the steps of: the product oil is collected and barreled to be continuously processed and recycled deeply; and the liquefied water is cooled and then continuously recycled.
3. The process of claim 1, wherein the process further comprises the steps of: recovering the first solid iron to an ash hopper.
4. The process of claim 3, wherein the process further comprises the steps of: the second solid iron formed in the reactor by drying is recycled to the ash hopper.
5. The process according to claim 1, wherein the high temperature gas and the heated, pressurized and atomized steel mill emulsion sludge are injected into the reactor along a tangential direction of the body of the reactor.
6. The process of claim 1, wherein the high temperature gas is formed by secondary heating with a heater or by non-oxidation of natural gas.
7. The process of claim 1, wherein the steel mill emulsion sludge is heated by a radiant tube heating method or a steam heating medium heating method.
8. The process of claim 1, wherein the lower portion of the reactor is of a conical or horizontal cylindrical configuration.
9. The process as claimed in claim 1, wherein the cyclone has an upper temperature of 345-355 ℃ and a lower temperature of 275-285 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115583779A (en) * | 2021-07-06 | 2023-01-10 | 中国石油天然气集团有限公司 | Emulsified oil-containing sludge treatment system and method |
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| 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 |
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| CN106222347A (en) * | 2016-08-01 | 2016-12-14 | 江苏省冶金设计院有限公司 | From the method and system of recovering iron from red mud |
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| CN115583779A (en) * | 2021-07-06 | 2023-01-10 | 中国石油天然气集团有限公司 | Emulsified oil-containing sludge treatment system and method |
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