CN109609251B - Recovery treatment agent for zero discharge of rolling waste liquid and treatment method - Google Patents
Recovery treatment agent for zero discharge of rolling waste liquid and treatment method Download PDFInfo
- Publication number
- CN109609251B CN109609251B CN201811606319.3A CN201811606319A CN109609251B CN 109609251 B CN109609251 B CN 109609251B CN 201811606319 A CN201811606319 A CN 201811606319A CN 109609251 B CN109609251 B CN 109609251B
- Authority
- CN
- China
- Prior art keywords
- oil
- rolling
- treatment agent
- recovery treatment
- emulsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/04—Working-up used lubricants to recover useful products ; Cleaning aqueous emulsion based
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Fats And Perfumes (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a recovery treating agent for zero emission of rolling waste liquid, and also discloses a treatment method for realizing zero emission of the rolling waste liquid by adopting the recovery treating agent.
Description
Technical Field
The invention relates to a recycling treatment agent for zero emission of rolling waste liquid, and also relates to a treatment method for realizing zero emission of the rolling waste liquid by adopting the recycling treatment agent, belonging to the technical field of industrial media.
Background
The emulsion is used as a lubricating and cooling medium in the steel rolling process. The emulsion has leakage in the using process and can generate certain waste emulsion; when the emulsion system equipment is overhauled, the emulsion in the equipment must be drained, and a large amount of waste emulsion is inevitably generated.
The current waste emulsion treatment mode is basically that the waste emulsion is subjected to oil-water separation, the separated waste oil needs to be further treated and then is used as biofuel to be burnt, the waste water needs to be subjected to flocculation treatment to generate sludge, and clear liquid needs to be subjected to membrane filtration and then is discharged after reaching the standard. Therefore, the development of an efficient treatment process for the steel rolling waste emulsion capable of realizing zero emission is necessary.
In the existing oil-water separation technology, a flocculating agent and a demulsifier are mostly adopted for oil-water separation, and the flocculating agent and the demulsifier have poor compatibility with components of rolling oil, and even can damage the components in the rolling oil, so that the performance of each aspect of the separated rolling oil is damaged, and the separated rolling oil cannot be reused.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems in the prior art, the invention provides a recovery treatment agent for zero discharge of rolling waste liquid, the recovery treatment agent (oil-water separating agent) has high separation efficiency and good oil-water separation effect, and the lubricating property of the mixed oil obtained by mixing the oil phase separated by the recovery treatment agent and the rolling crude oil is equivalent to that of the rolling crude oil.
The technical scheme adopted by the invention is as follows:
a recovery treatment agent for zero emission of rolling waste liquid is prepared from the following components in percentage by mass:
50% of tallow amine;
oleic acid 35%;
15% of 2-amino-2-methyl-1-propanol.
The formula of the recovery treating agent has the function of changing the surface tension of the emulsifier in the original emulsion, so that oil drops dispersed in the original emulsion are gathered together due to the change of the surface tension to form larger oil drops, and the oil-water separation of the emulsion is accelerated under the action of the density difference of the larger oil drops, thereby realizing good oil-water separation effect.
The raw materials used in the formula have good compatibility with components in the rolling oil, and the components in the rolling oil cannot be damaged, so that the separated rolling oil still has original lubricating property except emulsifying property.
The method for treating the rolling waste liquid by the recovery treating agent comprises the following treatment steps:
step 1, taking a certain amount of rolling waste emulsion to carry out oil concentration detection to obtain the oil content in the waste emulsion, then adding an oil-water separating agent with the oil mass of 0.5-2% into the waste emulsion, and fully stirring for a period of time;
step 2, transferring the waste emulsion added with the oil-water separating agent into a separating funnel, standing for a certain time, discharging lower clear liquid, and pouring upper oil into a recovered oil storage tank;
step 3, adding a certain amount of emulsifier into the oil liquid after oil-water separation to obtain standby recovered oil; when in use, the recovered oil and the rolling crude oil are mixed according to a proportion; wherein the addition amount of the emulsifier is 1 percent of the addition amount of the oil-water separating agent.
Wherein in the step 1, the stirring time is 20-40 minutes.
Wherein in the step 2, the standing time is 60-120 minutes.
Wherein, in the step 3, the mixing ratio of the reclaimed oil to the rolling crude oil is 1: 2.
Compared with the prior art, the invention has the beneficial effects that:
the process can completely separate oil and water from the rolling waste emulsion, the separated oil can be mixed with the rolling crude oil in proportion for recycling, and the water phase can be used as daily water supplement of a rolling mill, so that the zero emission treatment of the waste emulsion is realized, the subsequent high-precision membrane filtration treatment is not needed, and the investment cost and the treatment cost of subsequent equipment are greatly saved.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
All the components in the formula of the recycling agent are commercially available products.
The invention relates to a zero-emission treatment process of rolling waste liquid, which comprises the following steps:
the emulsion is collected into a wastewater tank after being discarded, the emulsion is thrown into a primary separating tank during treatment, an oil-water separating agent is added according to the proportion of 0.5-2% of the mass of oil in the emulsion, then stirring is started, the waste emulsion is thrown into a secondary separating tank after stirring for 20-40 minutes, standing is carried out for 60-120 minutes, and at the moment, the oil-water separating agent increases the size of oil drops in the emulsion to be more than 50 um. Under a standing state, oil drops in the emulsion can float upwards, the added oil-water separating agent can gather floating oil drop particles, and finally a transparent oil layer almost containing no water is formed on the liquid surface instead of flocculent suspended matters, while a bottom water phase is clear and transparent, and the separated water phase is discharged to a water storage tank at the bottom in a secondary separating tank and can be used as water supplement of a rolling mill; and the oil layer in the secondary separation tank overflows after accumulating to a certain amount and enters a recovered oil storage tank, and a water drain valve is arranged at the bottom of the recovered oil storage tank and used for discharging a small amount of water brought by the short standing time in the recovered oil.
The separated recovered oil can be mixed with the rolling crude oil in proportion to obtain mixed oil, and the mixed oil can be used as normal rolling oil, or the separated recovered oil and the rolling crude oil can be added into other emulsion systems after being compounded in proportion to be used as normal oil consumption supplement. To evaluate the properties of the recovered oils, tests for the lubricity (Pb value) of the recovered oils were carried out in accordance with GB/T12583.
The oil-water separating agent is different from a demulsifier, and the main component of the oil-water separating agent is modified fatty amine. The oil-water separating agent can change the oil-water interfacial tension in the emulsion, thereby realizing the enlargement of oil drops in the emulsion, and further realizing the floating, gathering and drainage. Because the oil-water separating agent can be dissolved in the recovered oil, in order to prevent the recovered oil from being mixed with the rolling crude oil and prevent the rolling crude oil from being increased in particle size of rolling oil drops in the rolling crude oil emulsion by the oil-water separating agent, a certain proportion of emulsifying agent is required to be added into the recovered oil and then mixed with the rolling crude oil.
Example 1
Putting 2L of rolling waste emulsion into a beaker, detecting that the mass percentage concentration of oil in the waste emulsion is 2.5 percent, namely the oil content is 50 g, adding an oil-water separating agent with the oil mass of 1 percent (0.5 g) into the waste emulsion, and stirring for 20 minutes;
transferring the waste emulsion into a separating funnel, standing for 60 minutes, discharging lower clear liquid, and pouring upper oil into a recovered oil storage tank;
and adding an emulsifier with the addition of 1% of the oil-water separating agent into the oil liquid after the oil-water separation to obtain recovered oil for later use. Mixing the reclaimed oil and the rolling crude oil according to the mass ratio of 1:2 and the mass ratio of 2: 1, and detecting the lubricating property and the emulsifying property of the reclaimed oil, the mixed oil and the rolling crude oil mixed according to the mass ratio of 1:2 and the mixed oil compounded according to the mass ratio of 2: 1. The results are shown in tables 1 and 2:
TABLE 1 lubricating Properties test
| Oil sample | Rolled crude oil | Mixing at a ratio of 1:2 | 2: 1 mixing | Recovery of oil |
| Pb value, kgf | 180 | 180 | 170 | 170 |
As can be seen from table 1, the lubricating performance of the recovered oil is not significantly reduced compared to the rolled crude oil, which is due to the good oil-water separation characteristics of the oil-water separating agent used, i.e., the oil drop particle components in the emulsion can be completely separated, and according to the above results, the recovered oil can be used together with the rolled crude oil in a ratio of up to 30%.
TABLE 2 particle size detection
As can be seen from table 2, compared with the granularity of the rolled crude oil emulsion, the granularity of the rolled crude oil emulsion is not greatly changed by adding the recycled oil with the emulsifier, that is, the recycled oil does not have adverse effect on the emulsification effect of the emulsion when being subsequently added into the emulsion system.
The rolling recovered oil obtained from the waste emulsion by the treatment process can be directly mixed with rolling crude oil for use, and has certain economic benefit; the water obtained from the waste emulsion can be used as water for a rolling mill for recycling, and is not discharged, so that the subsequent high-precision membrane filtration treatment is not needed, and the equipment investment cost and the subsequent treatment cost are saved; the treatment process can realize zero emission.
Claims (5)
1. A recovery treatment agent for zero discharge of rolling waste liquid is characterized in that: the material is prepared from the following components in percentage by mass:
50% of tallow amine;
oleic acid 35%;
15% of 2-amino-2-methyl-1-propanol.
2. A method for treating rolling mill effluent by using the recovery treatment agent as defined in claim 1, comprising the following treatment steps:
step 1, carrying out oil concentration detection on a certain amount of rolling waste emulsion to obtain the oil content in the waste emulsion, then adding a recovery treatment agent with the oil mass of 0.5-2% into the waste emulsion, and fully stirring for a period of time;
step 2, transferring the waste emulsion added with the recovery treatment agent into a separating funnel, standing for a certain time, discharging lower clear liquid, and pouring upper oil into a recovered oil storage tank;
step 3, adding a certain amount of emulsifier into the oil liquid after oil-water separation to obtain standby recovered oil; when in use, the recovered oil and the rolling crude oil are mixed according to a proportion; wherein the addition amount of the emulsifier is 1 percent of the addition amount of the recovery processing agent.
3. The method for treating rolling mill effluent with the recovery treatment agent according to claim 2, wherein: in the step 1, the stirring time is 20-40 minutes.
4. The method for treating rolling mill effluent with the recovery treatment agent according to claim 2, wherein: in the step 2, the standing time is 60-120 minutes.
5. The method for treating rolling mill effluent with the recovery treatment agent according to claim 2, wherein: in the step 3, the mass ratio of the reclaimed oil to the rolling crude oil is 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606319.3A CN109609251B (en) | 2018-12-26 | 2018-12-26 | Recovery treatment agent for zero discharge of rolling waste liquid and treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606319.3A CN109609251B (en) | 2018-12-26 | 2018-12-26 | Recovery treatment agent for zero discharge of rolling waste liquid and treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109609251A CN109609251A (en) | 2019-04-12 |
| CN109609251B true CN109609251B (en) | 2021-06-01 |
Family
ID=66011555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811606319.3A Active CN109609251B (en) | 2018-12-26 | 2018-12-26 | Recovery treatment agent for zero discharge of rolling waste liquid and treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109609251B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705965B (en) * | 2018-12-29 | 2022-04-19 | 江苏澳润新材料有限公司 | Composite calcium sulfonate-based lubricating grease with good water resistance |
| CN109705966B (en) * | 2018-12-29 | 2022-04-19 | 江苏澳润新材料有限公司 | Composite calcium sulfonate-based lubricating grease |
| CN110591802B (en) * | 2019-08-05 | 2022-11-25 | 浙江工业大学 | Method for preparing release agent by using waste emulsion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126196A (en) * | 1995-05-25 | 1996-07-10 | 成都化学制药厂 | Emulsion breaking agent |
| CN1389291A (en) * | 2002-05-14 | 2003-01-08 | 宜兴市化学厂 | Demulsifier for oil-water separation of fermented liquid |
| CN104293376A (en) * | 2013-07-19 | 2015-01-21 | 中国石油天然气股份有限公司 | Low-temperature demulsifier and preparation method thereof |
| US20150027926A1 (en) * | 2013-03-15 | 2015-01-29 | Malcera, L.L.C. | Demulsifier and dispersant for treating petroleum crude oils and biofuels prior to desalter and heater treater processing |
-
2018
- 2018-12-26 CN CN201811606319.3A patent/CN109609251B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126196A (en) * | 1995-05-25 | 1996-07-10 | 成都化学制药厂 | Emulsion breaking agent |
| CN1389291A (en) * | 2002-05-14 | 2003-01-08 | 宜兴市化学厂 | Demulsifier for oil-water separation of fermented liquid |
| US20150027926A1 (en) * | 2013-03-15 | 2015-01-29 | Malcera, L.L.C. | Demulsifier and dispersant for treating petroleum crude oils and biofuels prior to desalter and heater treater processing |
| CN104293376A (en) * | 2013-07-19 | 2015-01-21 | 中国石油天然气股份有限公司 | Low-temperature demulsifier and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 冷连轧工艺润滑冷却剂及其废液处理;陆善忠;《上海金属》;20000331;第22卷(第2期);第56-60页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109609251A (en) | 2019-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109609251B (en) | Recovery treatment agent for zero discharge of rolling waste liquid and treatment method | |
| CN101670199B (en) | Method for removing catalyst solid powder in oil slurry using capturing settling agent | |
| CN103820142A (en) | Environment-friendly-type polluted oil processing agent | |
| CN103361165B (en) | Regenerative equipment and method for waste emulsion produced in steel rolling process | |
| CN108975646B (en) | Oil sludge demulsifier and preparation method and application thereof | |
| CN103922518B (en) | Rinse pretreatment process and the system of sewage | |
| JP2024028377A (en) | Waste water treatment method | |
| CA1070593A (en) | Oil emulsion processing | |
| CN103801114A (en) | Purification assistant for coal chemical industry production and application thereof in coal chemical industry production | |
| CN101585610A (en) | Water treatment method that a kind of medicament can be recycled and system thereof | |
| CN101555056B (en) | High-efficiency emulsion splitter | |
| CN110950513B (en) | Method for treating tank bottom mud by utilizing surfactant pretreatment-hydrothermal oxidation-thermal cracking coupling method | |
| CN102533318B (en) | Method for removing catalyst powder from catalytic cracking slurry | |
| CN203333614U (en) | Regenerating device for waste emulsified liquid generated in steel rolling process | |
| CN105668677A (en) | Synergistic extracting agent for oil and phenol in waste water of coal chemical industry | |
| CN115403243B (en) | Fatlute processing system | |
| CN108217837A (en) | The multiple treating system and its processing method of a kind of high oil-containing wastewater | |
| CN105174558A (en) | Pretreatment method for removing oil by gas-making wastewater | |
| CN102732369A (en) | Regeneration process for waste lubricating oil | |
| CN108929766A (en) | A kind of emulsion regeneration method | |
| CN113429078A (en) | Treatment method of oily wastewater | |
| CN208200453U (en) | A kind of multiple treating system of high oil-containing wastewater | |
| CN1418934A (en) | Techonlogical method for removing naphthenic acid from crude oil and distillated oil | |
| CN112266108A (en) | Machining emulsified waste liquid treatment device and process based on effective component recovery | |
| CN112607984A (en) | Method for treating rolling oil sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |