CN113385159A - Novel process for regenerating rolling oil-containing waste diatomite of aluminum processing enterprise - Google Patents
Novel process for regenerating rolling oil-containing waste diatomite of aluminum processing enterprise Download PDFInfo
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- CN113385159A CN113385159A CN202010173371.5A CN202010173371A CN113385159A CN 113385159 A CN113385159 A CN 113385159A CN 202010173371 A CN202010173371 A CN 202010173371A CN 113385159 A CN113385159 A CN 113385159A
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- diatomite
- rolling oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
Abstract
The invention belongs to the technical field of regeneration of oil-containing waste diatomite in aluminum processing enterprises, and provides a novel regeneration process for extracting finished rolling oil and calcining finished diatomite from the oil-containing waste diatomite by using an extracting agent. The device specifically comprises a stirring extraction system, a filtering system, a rolling oil desolventizing system containing an extracting agent, a kieselguhr desolventizing system containing an extracting agent, a refining system, a reduction regeneration system, a calcining system and a grading system. Solves the problem that the oil can only be used as fuel oil and the diatomite is not easy to regenerate the finished diatomite in the acid pickling method and the electromagnetic external heating physical desorption method in the regeneration process of the oil-containing waste diatomite of aluminum processing enterprises.
Description
Technical Field
The invention belongs to the technical field of regeneration of oil-containing waste diatomite in aluminum processing enterprises, and particularly relates to a novel regeneration process for extracting finished rolling oil and calcining finished diatomite from oil-containing waste diatomite by using an organic solvent.
Background
At present, the regeneration process of the waste diatomite containing rolling oil in the aluminum processing enterprises mainly comprises the following steps: sulfuric acid washing method and electromagnetic heating physical desorption method. The main difficulties of the sulfuric acid water washing method are that: treating waste acid liquor, treating waste salt, treating waste gas and treating acid-containing waste residues; the main difficulties of the electromagnetic heating physical desorption method are as follows: safety management and control, tail gas treatment and deoiled waste diatomite treatment in the desorption process. The two processes have imperfect production equipment, and produce waste gas, waste liquid and waste residue which are difficult to be effectively treated. The design is mainly aimed at the technical process of recycling the waste diatomite containing rolling oil in aluminum processing enterprises.
Disclosure of Invention
The invention aims to fully separate, regenerate and utilize rolling oil and diatomite from waste diatomite containing the rolling oil in aluminum processing enterprises by a novel process.
In order to achieve the purpose, the invention adopts the following technical scheme: the method is characterized in that the extracting agent and the oil-containing waste diatomite of the secondary aluminum processing enterprises are stirred in a stirring extraction tank and then separated by a filtering system to obtain the rolling oil containing the extracting agent and the extracting agent-containing diatomite. The rolling oil containing the extracting agent is treated by a desolventizing system, a refining system and a reduction regeneration system to obtain finished rolling oil; and the diatomite containing the extracting agent is subjected to a desolventizing system, a calcining system and a grading system to obtain a finished product diatomite.
The extracting agent used for treating the oil-containing waste diatomite in the stirring extraction tank is one or two mixed liquids of dimethyl carbonate, furfural, phenol, N-methyl pyrrolidone, furfuryl alcohol, isopropanol and isobutanol.
The diatomite desolventizing system containing the extracting agent or the rolling oil desolventizing system containing the extracting agent separates and recovers the extracting agent from the diatomite or the rolling oil in desolventizing equipment at a certain temperature. The extractant is recycled.
The refining system is used for refining the desolventized rolling oil by using finished diatomite.
The calcining system is to calcine waste diatomite after the oil is desorbed and rolled by aluminum processing enterprises in a calcining kiln. The matched tail gas treatment device comprises a direct-fired waste gas combustion chamber, a waste heat boiler, a quenching device, a dust removal device, a desulfurization device, a denitrification device, an active carbon adsorption device and the like.
The grading system is used for grading and separating the diatomite subjected to the calcination system into finished diatomite products with different meshes by wind power under the condition of negative pressure.
And refining the waste diatomite generated by the desolventized rolling oil by using the finished diatomite to return to the stirring extraction system again for regeneration.
Compared with the prior art, the invention at least has the following beneficial effects: the process is the most environment-friendly and economical disposal process at present; solves the problems of complex regeneration process of diatomite, great environmental pollution and poor quality of extracted oil products in the prior art; the process performance is unique, and high-quality regenerated rolling oil and diatomite can be produced; automatic operation, safety, convenience and high efficiency. No waste water and waste residue are generated in the production process.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
A. Organic solvent extraction:
conveying the waste diatomite containing the rolling oil into a stirring extraction tank, adding an extracting agent (one or two mixed solution of dimethyl carbonate, furfural, phenol, N-methyl pyrrolidone, furfuryl alcohol, isopropanol and isobutanol), starting an automatic stirring device, stirring for 40 minutes to ensure that the rolling oil in the diatomite is fully contacted with the extracting agent, and extracting the rolling oil component in the diatomite by using the extracting agent.
B. And (3) filtering:
and after extraction is finished, a valve at the bottom of the extraction tank is opened, so that the slurry containing the oil diatomite enters a filtering system through a closed pipeline, and the oil and soil are separated through filtering.
C. Regeneration of rolling oil:
the regeneration process of the rolling oil comprises the processes of desolventizing, refining, reducing, regenerating and the like, and specifically comprises the following steps: the extracted rolling oil containing the extractant is sent to a desolventizing tower, the desolventizing tower is heated and desolventized by steam, the separation of the rolling oil and the extractant is realized by utilizing the volatility difference of each component in a liquid mixture, the separated extractant is condensed and then enters an extractant recovery tank to be reused for production, the rolling oil enters a refining system, impurities such as soaps, trace moisture, aluminum powder and the like in the waste rolling oil are adsorbed by utilizing a special microporous structure of diatomite, and the refined rolling oil is reduced by a reduction regeneration system to obtain the finished rolling oil.
D. Regeneration of diatomite:
the regeneration of the diatomite comprises the processes of desolventizing, calcining, grading and the like, and specifically comprises the following steps: feeding diatomite containing an extracting agent into a desolventizing kettle, heating to a certain temperature to ensure that the extracting agent is removed from the top of the desolventizing kettle in a gaseous state, condensing and then feeding the extracting agent into an extracting agent recovery tank for recycling, discharging the diatomite from the bottom of the kettle and feeding the diatomite into a calcining kiln for calcining, controlling the temperature of the calcining kiln to be about 800 ℃ for 1-2 hours to ensure that trace organic matters in the diatomite are removed in a carbonization mode to obtain high-purity calcined diatomite, and dividing the calcined diatomite into diatomite products with different specifications according to particle sizes after the calcined diatomite is subjected to a crushing and grading system.
As a further technical scheme, the extraction process in the step A utilizes the principle of similar phase dissolution to extract the rolling oil in the diatomite. Controlling the process, wherein the ratio of the addition amount of the extracting agent to the oil-containing diatomite is 2:1, the stirring speed is 1200r/min, and the stirring time is 40 min.
As a further technical scheme, the tail gas generated in the process of calcining the diatomite in the step D is provided with a matched tail gas treatment device: the direct-fired waste gas combustion chamber, exhaust-heat boiler, rapid cooling device, dust collector, desulphurization unit, denitrification facility, active carbon adsorption equipment etc. guarantee that the discharge to reach standard of tail gas.
And as a further technical scheme, the step D of diatomite classification is to perform wind classification on calcined diatomite under the condition of negative pressure to separate out finished diatomite products with different meshes.
Compared with the prior art, the invention at least has the following beneficial effects: the process is the most environment-friendly and economical disposal process at present; solves the problems of complex regeneration process of diatomite, great environmental pollution and poor quality of extracted oil products in the prior art; the process performance is unique, and high-quality regenerated rolling oil and diatomite can be produced; automatic operation, safety, convenience and high efficiency. The invention is also suitable for the waste diatomite containing oil of copper rolling enterprises and the waste diatomite containing oil of stainless steel rolling enterprises.
The above description is a preferred embodiment, but it should not be understood that the scope of the present invention is limited thereby, and it should be noted that, for those skilled in the art, modifications or improvements can be made to the technical solution of the present invention without departing from the spirit of the present invention, and the technical solution of the present invention is covered thereby. The protection scope of the present invention shall be subject to the appended claims.
Claims (7)
1. A novel regeneration process for extracting waste diatomite containing rolling oil of a regenerated aluminum processing enterprise by using an extractant is characterized in that the extractant and the waste diatomite containing the oil are stirred in a stirring extraction tank and then are separated into rolling oil containing the extractant and diatomite containing the extractant by a filtering system, and the rolling oil containing the extractant is treated by a desolventizing system, a refining system and a reduction regeneration system to obtain finished rolling oil; and the diatomite containing the extracting agent is subjected to a desolventizing system, a calcining system and a grading system to obtain a finished product diatomite.
2. The extraction agent used for treating the oil-containing waste diatomite in the stirring extraction tank according to the claim 1 is one or two mixed solution of dimethyl carbonate, furfural, phenol, N-methyl pyrrolidone, furfuryl alcohol, isopropanol and isobutanol.
3. The diatomite desolventizing system or the rolling oil desolventizing system containing the extractant as claimed in claim 1, wherein the diatomite containing the extractant or the rolling oil containing the extractant is separated from the diatomite or the rolling oil and recovered in a desolventizing device at a certain temperature, and the extractant is recycled.
4. The refining system of claim 1 wherein the desolventized rolling oil is refined with finished diatomaceous earth.
5. The calcining system of claim 1, wherein the waste diatomite after the desorption of the rolling oil by the aluminum processing enterprises is calcined in a calcining kiln, and the tail gas treatment device matched with the calcining system comprises a direct-fired waste gas combustion chamber, a waste heat boiler, a quenching device, a dedusting device, a desulfurization device, a denitration device, an activated carbon adsorption device and the like.
6. The classification system of claim 1 is used for classifying the diatomite after the calcination system into finished diatomite with different mesh numbers by wind power under the condition of negative pressure.
7. The method of claim 4 wherein the used diatomaceous earth produced by refining the desolventized rolling oil with finished diatomaceous earth is returned to the extraction system for regeneration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010173371.5A CN113385159A (en) | 2020-03-13 | 2020-03-13 | Novel process for regenerating rolling oil-containing waste diatomite of aluminum processing enterprise |
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| CN202010173371.5A CN113385159A (en) | 2020-03-13 | 2020-03-13 | Novel process for regenerating rolling oil-containing waste diatomite of aluminum processing enterprise |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000181019A (en) * | 1998-12-16 | 2000-06-30 | Fuji Photo Film Co Ltd | Packing material for photosensitive material, its production and photosensitive material packed body using the same |
| DE102007028737A1 (en) * | 2007-06-21 | 2008-12-24 | Ulrich Georg Hammer | Method for preparing rolling oil from mixture of rolling oil and xenobiotic, involves bringing mixture of rolling oil and xenobiotic in contact with liquid extracting agent under agitation in agitator containers |
| CN102936197A (en) * | 2012-11-13 | 2013-02-20 | 天津南开大学蓖麻工程科技有限公司 | CO (carbon monoxide)2Preparation method of base lubricant base oil |
| CN106947864A (en) * | 2016-01-07 | 2017-07-14 | 中国科学院过程工程研究所 | A kind of system and its processing method that heavy metal is reclaimed from discarded SCR catalyst |
| CN107099328A (en) * | 2017-07-05 | 2017-08-29 | 洛阳德正废弃资源再利用有限公司 | The recovery processing technique that waste mineral oil is discharged without danger |
| CN107185508A (en) * | 2017-06-26 | 2017-09-22 | 焦作市新科资源综合利用研发有限公司 | A kind of method that utilization dichloroethanes reclaims oily waste water atlapulgite |
| CN206980747U (en) * | 2017-05-16 | 2018-02-09 | 河北天诺再生资源利用有限公司 | Oil-containing waste diatomite filter aid indirect regeneration |
| CN110194477A (en) * | 2019-06-04 | 2019-09-03 | 山东盛日中天再生资源科技有限公司 | The regeneration and treatment technique and its device of waste alumina |
-
2020
- 2020-03-13 CN CN202010173371.5A patent/CN113385159A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000181019A (en) * | 1998-12-16 | 2000-06-30 | Fuji Photo Film Co Ltd | Packing material for photosensitive material, its production and photosensitive material packed body using the same |
| DE102007028737A1 (en) * | 2007-06-21 | 2008-12-24 | Ulrich Georg Hammer | Method for preparing rolling oil from mixture of rolling oil and xenobiotic, involves bringing mixture of rolling oil and xenobiotic in contact with liquid extracting agent under agitation in agitator containers |
| CN102936197A (en) * | 2012-11-13 | 2013-02-20 | 天津南开大学蓖麻工程科技有限公司 | CO (carbon monoxide)2Preparation method of base lubricant base oil |
| CN106947864A (en) * | 2016-01-07 | 2017-07-14 | 中国科学院过程工程研究所 | A kind of system and its processing method that heavy metal is reclaimed from discarded SCR catalyst |
| CN206980747U (en) * | 2017-05-16 | 2018-02-09 | 河北天诺再生资源利用有限公司 | Oil-containing waste diatomite filter aid indirect regeneration |
| CN107185508A (en) * | 2017-06-26 | 2017-09-22 | 焦作市新科资源综合利用研发有限公司 | A kind of method that utilization dichloroethanes reclaims oily waste water atlapulgite |
| CN107099328A (en) * | 2017-07-05 | 2017-08-29 | 洛阳德正废弃资源再利用有限公司 | The recovery processing technique that waste mineral oil is discharged without danger |
| CN110194477A (en) * | 2019-06-04 | 2019-09-03 | 山东盛日中天再生资源科技有限公司 | The regeneration and treatment technique and its device of waste alumina |
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