CN104388115B - The process of the meticulous fractionation of organic heat carrier recycling - Google Patents
The process of the meticulous fractionation of organic heat carrier recycling Download PDFInfo
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- CN104388115B CN104388115B CN201410351723.6A CN201410351723A CN104388115B CN 104388115 B CN104388115 B CN 104388115B CN 201410351723 A CN201410351723 A CN 201410351723A CN 104388115 B CN104388115 B CN 104388115B
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Abstract
The invention discloses the process of the meticulous fractionation of organic heat carrier recycling, belong to organic heat carrier application. Comprise high boiling component separating technology and low boiling component separating technology, it is characterized in that: when high boiling component separates, liquid mixture passes through drain sump, falling-film distillation tower, fractionating column, molecular clock evaporimeter, vacuum flasher, vacuum distillation tower and oil storage tank successively, when low boiling component separates, first pass through drain sump, then after falling film evaporator separates, be delivered to oil storage tank. There is operating pressure low, separate than high, the feature such as energy consumption is low, clean environment firendly. Can, according to the difference of evaporating temperature, easily conduction oil to be recycled be cut into: the various ingredients such as white oil conduction oil, lubricating oil, astatki, have technical ability environmental protection, ideal composition, efficiency is high, has improved economic benefit and environmental benefit, has very high using value.
Description
Technical field
The present invention relates to the process of the meticulous fractionation of organic heat carrier recycling, belong to organic heat carrier application.
Background technology
Traditional waste oil recovery method is that discarded oil plant is adjusted to pH value according to acid for acid number, alkali chemical treatment, after washing, add the absorption such as active carbon or carclazyte, filter, be dried, then collect the cut in a certain temperature range section through vacuum fractionation, for reaching recovery object. This recovery method operating process is long, need to be through water-washing process repeatedly, and the discharge that can produce salt, decolorizer and white slag soil after acid-base neutralization, environmental pollution is larger. And because the boiling point of conduction oil is high, adopting rectificating method energy consumption very large, product yield is low.
In addition, because different types of conduction oil indicator difference is larger, discarded conduction oil source is different, adopts above-mentioned recovery method also may cause unstable product quality.
The meticulous fractionating technology of molecule relating in patent of the present invention, can very easily the conduction oil raw material separation cuts reclaiming be become according to evaporating temperature: the various ingredients such as conduction oil, lubricating oil, astatki, therefore have very high using value aspect the discarded conduction oil of processing.
Summary of the invention
Technical problem to be solved by this invention is, the process of the meticulous fractionation of organic heat carrier recycling is provided, and discarded organic heat carrier is reclaimed to meticulous fractionation.
The technical solution adopted for the present invention to solve the technical problems is: the process of the meticulous fractionation of organic heat carrier recycling is provided, has comprised high boiling component separating technology and low boiling component separating technology, it is characterized in that:
When high boiling component separates, first liquid mixture passes through drain sump, by under Action of Gravity Field by moisture content natural separation out, liquid mixture is delivered to falling-film distillation tower by next step, by liquid mixture appropriateness under vacuum condition is heated, again separate, next step is delivered to fractionating column by the liquid mixture of separating and heats, by the different boiling characteristic of each component in liquid mixture, carry out refrigerated separation, next step is delivered to molecular clock evaporimeter by the liquid mixture of separating again, liquid mixture is heated up, by molecular motion mean free path principle, light molecule in liquid mixture is overflowed from liquid level, light molecule drops on cryosurface and weight molecule returns, liquid mixture is carried out to preferable separate, the liquid of separating is delivered to vacuum flasher by next step, by pressure liquid stream is reduced suddenly, partially liq equilibrium evaporation, isolate relatively pure one matter, the aqueous phase substance of separating is delivered to vacuum distillation tower by next step, make aqueous phase substance under environment under low pressure, carry out separated, the finished product finally separation being completed is delivered in the fluid reservoir of tank field, completing high boiling component separates,
Low boiling component separate time, first liquid mixture passes through drain sump, by under Action of Gravity Field by moisture content natural separation out,
Liquid mixture is delivered to falling film evaporator by next step, liquid mixture is added from falling film evaporator heating clamber upper tube box, by liquid distribution film formation device, uniform distribution is to single heat exchanger tube falling film evaporator, and under Action of Gravity Field, liquid mixture is even membranaceous whereabouts, in process to liquid mixture heat temperature raising, make liquid mixture produce steam and aqueous phase substance, the finished product having separated the most at last is delivered in the fluid reservoir of tank field, completes low boiling component and separates.
The process of the meticulous fractionation of organic heat carrier recycling of the present invention, its feature also comprises: in high boiling component separation process, when liquid mixture separates in molecular clock evaporimeter, in system, absolute vacuum pressure is less than 10Pa.
Related appliance arrangement in whole technological process, adopts DCS control system, has realized the automation control of integrated artistic flow process.
Compared with prior art, the invention has the beneficial effects as follows:
The process of the meticulous fractionation of organic heat carrier recycling, separate and separate with high boiling component by difference low boiling component, in conjunction with falling film evaporator and two kinds of distinct devices of molecular distillation apparatus, adopt different separating process, there is operating pressure low, separate than high the feature such as energy consumption is low, clean environment firendly. Can, according to the difference of evaporating temperature, easily conduction oil to be recycled be cut into: the various ingredients such as white oil conduction oil, lubricating oil, astatki, improve economic benefit, there is very high using value.
Detailed description of the invention:
When high boiling component separates, first liquid mixture passes through drain sump, by the difference of each component molecular mass under Action of Gravity Field, by moisture content natural separation out, liquid mixture is delivered to falling-film distillation tower by next step, liquid mixture is placed under vacuum condition, appropriateness is heated and is separated, and the low heated time of vapo(u)rizing temperature is short, has facilitated technological operation, separation Chengdu is high, and released state is irreversible. The liquid mixture of separating is delivered to fractionating column to be separated, by the different boiling characteristic of each component in liquid mixture, liquid mixture rises to distillation stage from being first heated in reactor, low-boiling continuation is risen, tower top temperature after the heat transfer that is subject to low boilers is consistent with low boilers, so low boilers is fractionated out, and higher thing is not because reach corresponding boiling point, therefore can be subject to be back in reactor or still the latter half after cooling, after low boilers is distillated completely, higher thing is fractionated in succession. Again the liquid mixture of separating is delivered to molecular clock evaporimeter,
Rotating by controlled scraper plate the film improving mixes, make material produce effectively small active movement, realize the shortest and controlled material residence time, and film thickness is also in controlled range, thereby can reach best thermal energy conduction, mass transfer and separative efficiency, further liquid mixture be carried out to preferable separate. Again the liquid of separating is delivered to vacuum flasher, by pressure liquid stream is reduced suddenly, partially liq equilibrium evaporation, isolates relatively pure one matter, and the aqueous phase substance of separating is delivered to vacuum distillation tower, because the temperature that the boiling temperature of liquid refers to the vapour pressure of liquid while equating with external pressure, so when external pressure reduces, its boiling temperature decreases, and makes aqueous phase substance carry out separated under environment under low pressure, convenient operation, reduces equipment power dissipation. The finished product finally separation being completed is delivered in the fluid reservoir of tank field, completes the job requirement that high boiling component separates.
Low boiling component separate time, first liquid mixture passes through drain sump, by under Action of Gravity Field by moisture content natural separation out,
Again liquid mixture is delivered to falling film evaporator, liquid mixture is added from falling film evaporator heating clamber upper tube box, by liquid distribution film formation device, uniform distribution is to single heat exchanger tube falling film evaporator, and under Action of Gravity Field, liquid mixture is even membranaceous whereabouts, in the process falling, pass through liquid mixture heat temperature raising, make the sufficient separation cuts of liquid mixture, the finished product having separated the most at last is delivered in the fluid reservoir of tank field, completes the job requirement that low boiling component separates.
Related appliance arrangement in whole technological process, adopts DCS control system, has realized integrated automation control. When saving manpower, the quality stability of product in mass production is significantly improved.
The above, it is only preferred embodiment of the present invention, be not the restriction of the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be combined, change or retrofit and be equivalent embodiment of the present invention. Every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (3)
1. the process of the meticulous fractionation of organic heat carrier recycling, comprises high boiling component separating technology and low boiling component separating technology, it is characterized in that:
When high boiling component separates, first liquid mixture passes through drain sump, by under Action of Gravity Field by moisture content natural separation out, liquid mixture is delivered to falling-film distillation tower by next step, by liquid mixture appropriateness under vacuum condition is heated, again separate, next step is delivered to fractionating column by the liquid mixture of separating and heats, by the different boiling characteristic of each component in liquid mixture, carry out refrigerated separation, next step is delivered to molecular clock evaporimeter by the liquid mixture of separating again, liquid mixture is heated up, by molecular motion mean free path principle, light molecule in liquid mixture is overflowed from liquid level, light molecule drops on cryosurface and weight molecule returns, liquid mixture is carried out to preferable separate, the liquid of separating is delivered to vacuum flasher by next step, by pressure liquid stream is reduced suddenly, partially liq equilibrium evaporation, isolate relatively pure one matter, the aqueous phase substance of separating is delivered to vacuum distillation tower by next step, make aqueous phase substance under environment under low pressure, carry out separated, the finished product finally separation being completed is delivered in the fluid reservoir of tank field, completing high boiling component separates,
When low boiling component separates, first liquid mixture passes through drain sump, by under Action of Gravity Field by moisture content natural separation out, liquid mixture is delivered to falling film evaporator by next step, liquid mixture is added from falling film evaporator heating clamber upper tube box, by liquid distribution film formation device, uniform distribution is to single heat exchanger tube falling film evaporator, under Action of Gravity Field, liquid mixture is even membranaceous whereabouts, in process to liquid mixture heat temperature raising, make liquid mixture produce steam and aqueous phase substance, the finished product having separated the most at last is delivered in the fluid reservoir of tank field, completing low boiling component separates.
2. the process of the meticulous fractionation of organic heat carrier recycling according to claim 1, its feature also comprises: in high boiling component separation process, when liquid mixture separates in molecular clock evaporimeter, in system, absolute vacuum pressure is less than 10Pa.
3. the process of the meticulous fractionation of organic heat carrier recycling according to claim 1, its feature also comprises: related appliance arrangement in whole technological process, adopt DCS control system, realize the automation control of integrated artistic flow process.
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| CN104388115B true CN104388115B (en) | 2016-05-18 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373108A (en) * | 2010-08-18 | 2012-03-14 | 北京金隅红树林环保技术有限责任公司 | Process method for producing base oil by regenerating waste lubricating oil |
| CN103820201A (en) * | 2014-03-07 | 2014-05-28 | 淄博铁宇机车修理有限公司 | Technology and device for regenerating waste mechanical lubricant by four-stage short range distillation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020144928A1 (en) * | 2001-01-29 | 2002-10-10 | Bronshtein Alexander P. | Energy efficient process for converting refinery and petroleum-based waste to standard fuels |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373108A (en) * | 2010-08-18 | 2012-03-14 | 北京金隅红树林环保技术有限责任公司 | Process method for producing base oil by regenerating waste lubricating oil |
| CN103820201A (en) * | 2014-03-07 | 2014-05-28 | 淄博铁宇机车修理有限公司 | Technology and device for regenerating waste mechanical lubricant by four-stage short range distillation |
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Effective date of registration: 20170907 Address after: 255300, No. 1, outer ring road, northwest of Zhoucun District, Shandong, Zibo Patentee after: Shandong Hengli heat carrier Engineering Co. Ltd. Address before: 255300 Shandong Province, Zibo city Zhoucun District North Ring Road No. 1 (new material in Chemical Industry Park) Patentee before: SHANDONG HENGDAO OIL CHEMICAL CO., LTD. |
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