CN114196424A - Recycling treatment method of hazardous waste in pharmaceutical industry - Google Patents
Recycling treatment method of hazardous waste in pharmaceutical industry Download PDFInfo
- Publication number
- CN114196424A CN114196424A CN202111517392.5A CN202111517392A CN114196424A CN 114196424 A CN114196424 A CN 114196424A CN 202111517392 A CN202111517392 A CN 202111517392A CN 114196424 A CN114196424 A CN 114196424A
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- China
- Prior art keywords
- pharmaceutical industry
- hazardous waste
- recycling
- solvent
- cracking furnace
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a resourceful treatment method of hazardous waste in pharmaceutical industry, which comprises the following steps: (1) conveying the hazardous waste in the pharmaceutical industry into a vacuum drier for drying; (2) condensing the vaporized material by a condenser to obtain a mixed solvent; (3) separating and refining the mixed solvent to obtain a regenerated solvent; (4) crushing the dried residue, mixing the crushed dried residue with a catalyst, and then sending the mixture into a low-temperature cracking furnace for catalytic cracking; (5) condensing the cracked gas by a condenser, and fractionating to obtain fuel oil. The method deeply recovers the residual organic solvent in the hazardous waste of the pharmaceutical industry, further cracks macromolecular organic matters to manufacture fuel oil, recycles the hazardous waste of the pharmaceutical industry, and reduces the discharge of the hazardous waste of the pharmaceutical industry.
Description
Technical Field
The invention belongs to the technical field of hazardous waste treatment, and particularly relates to a resourceful treatment method for hazardous waste in pharmaceutical industry.
Background
China pays great attention to energy conservation and environmental protection, and the treatment requirement on solid wastes, particularly dangerous wastes, is higher and higher. The pharmaceutical industry is an industry that produces a large amount of hazardous waste, and mainly comprises: waste organic solvent, residue of the fine distillation still, centrifugal mother liquor, filtration residue and the like.
The waste organic solvent is easy to be recycled by conventional processes such as distillation, rectification, extraction and the like.
The distillation still residue and the centrifuged mother liquor generally contain macromolecular organic substances (residual drugs, intermediates, reaction by-products, etc.) and impurities such as salts and water, in addition to a part of the organic solvent, because of their complex components. The composition of the organic solvent is also rather complex, with dichloromethane, acetonitrile, methanol, DMF, toluene, THF, ethanol, acetone, etc. being the most commonly used solvents.
At present, the treatment mode of the hazardous waste is mainly incineration. This approach has the following disadvantages:
(1) a large amount of carbon emissions is generated;
(2) dichloromethane and THF are used as precursors for synthesizing dioxin substances, and dioxin can be increased in the process of burning the dangerous wastes;
(3) chlorine-containing organic matters such as dichloromethane and the like generate HCl in the incineration process, generate acid corrosion to equipment, increase the deacidification pressure of tail gas and increase the generation amount of fly ash;
(4) in the incineration process, hazardous wastes containing organic nitrogen, such as acetonitrile, DMF and the like, can generate NOx, so that the pressure of subsequent denitration is increased, and the risk of emission is increased;
(5) the organic solvent is an important chemical raw material, and the direct incineration is also a great waste of resources.
Disclosure of Invention
The invention aims to provide a method for recycling hazardous wastes in the pharmaceutical industry, which is used for deeply recycling residual organic solvents in the hazardous wastes in the pharmaceutical industry, further cracking macromolecular organic matters to manufacture fuel oil, recycling the hazardous wastes in the pharmaceutical industry and reducing the discharge of the hazardous wastes in the pharmaceutical industry.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention discloses a resourceful treatment method of hazardous waste in pharmaceutical industry, which comprises the following steps:
(1) conveying the hazardous waste in the pharmaceutical industry into a vacuum drier for drying;
(2) condensing the vaporized material obtained in the step (1) by a condenser to obtain a mixed solvent;
(3) separating and refining the mixed solvent obtained in the step (2) to obtain a regenerated solvent;
(4) crushing the dried residue obtained in the step (1), mixing the crushed dried residue with a catalyst, and then sending the mixture into a low-temperature cracking furnace for catalytic cracking;
(5) condensing the cracked gas obtained in the step (4) by a condenser, and then fractionating to obtain fuel oil.
As a preferable technical solution, in the step (3), the specific method for separation and purification comprises: the mixed solvent is firstly decanted and layered, and then the liquid phase obtained by layering is classified for solvent refining.
As a preferred technical scheme, the refining comprises one or more of rectification, extraction and membrane separation.
As a preferred technical scheme, if the water content of the liquid phase obtained by layering is more than 95%, the liquid phase is directly treated according to the organic wastewater.
Preferably, in the step (3), the residue generated in the separation and purification process is returned to the vacuum dryer of the step (1) for drying.
Preferably, in the step (4), the catalyst is a mixture of zinc oxide, aluminum hydroxide and graphite.
As a preferable technical scheme, in the step (4), the low-temperature cracking furnace is a vacuum cracking furnace, and the catalytic cracking temperature is as follows: the low temperature region is 200-300 ℃, and the high temperature region is 500-600 ℃.
In the step (5), the residue generated by fractionation is returned to the low-temperature cracking furnace in the step (4) for catalytic cracking.
As a preferred technical scheme, the non-condensable gas generated in the treatment process is collected and then sent back to the low-temperature cracking furnace to be used as fuel.
As a preferred technical scheme, the hazardous waste in the pharmaceutical industry comprises the residue of a fine distillation still or/and a centrifugal mother liquor in the pharmaceutical industry.
The invention has the beneficial effects that:
1. the method adopts vacuum drying to fully and effectively extract the solvent with low boiling point in the hazardous waste in the pharmaceutical industry, and the extracted mixed solvent can be refined to obtain the qualified regenerated solvent; and (4) cracking and fractionating the dried residue at low temperature to obtain qualified fuel oil. The whole process generates a very small amount of secondary hazardous waste, and the resource is very thorough.
2. The invention collects the non-condensable gas generated in the process as the fuel of the low-temperature cracking furnace, so that the VOCs are treated and a large amount of fuel is saved.
3. The invention collects the residues generated in the solvent refining process and then returns the residues to the vacuum drying stage for treatment, thereby really realizing zero emission of hazardous wastes in the recycling process.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The present invention is further described with reference to specific examples to enable those skilled in the art to better understand the present invention and to practice the same, but the examples are not intended to limit the present invention.
As shown in figure 1, the method for recycling hazardous waste in pharmaceutical industry comprises the following steps:
(1) and sampling and detecting the distillation range. The condensing condition of the condenser is determined according to the initial boiling point temperature, the vacuum drying condition (vacuum degree and drying temperature) is determined according to the distillation range, and the low-temperature cracking treatment capacity is determined according to the residue content.
(2) The residue of the fine distillation still and the centrifugal mother liquor in the pharmaceutical industry are sent to a vacuum drier for drying.
(3) Condensing the vaporized material obtained in the step (2) by a condenser to obtain a mixed solvent.
(4) Decanting and layering the mixed solvent obtained in the step (3), classifying the liquid phase obtained by layering (sampling and detecting the type, content and water content of the solvent), and refining the solvent according to the type of the liquid phase, wherein the refining method comprises rectification, extraction, membrane separation and the like to obtain a regenerated solvent; and directly treating the liquid phase with the water content of more than 95% according to the organic wastewater. And (4) returning the residue generated in the separation and purification process to the vacuum drier in the step (1) for drying.
(5) Crushing the dried residue obtained in the step (2), and mixing the crushed dried residue with a catalyst, wherein the catalyst is a mixture consisting of zinc oxide, aluminum hydroxide and graphite; and then sending the mixture into a low-temperature cracking furnace for catalytic cracking, wherein the low-temperature cracking furnace is a vacuum cracking furnace, the catalytic cracking temperature is 200-300 ℃ in a low-temperature region, and the temperature is 500-600 ℃ in a high-temperature region.
(6) Condensing the cracked gas obtained in the step (5) by a condenser, and then fractionating to obtain fuel oil. And (5) returning the residue generated by the fractionation to the low-temperature cracking furnace in the step (5) for catalytic cracking.
(7) And collecting the non-condensable gas generated in the treatment process in the step, and then sending the collected non-condensable gas back to the low-temperature cracking furnace to be used as fuel.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517392.5A CN114196424A (en) | 2021-12-13 | 2021-12-13 | Recycling treatment method of hazardous waste in pharmaceutical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517392.5A CN114196424A (en) | 2021-12-13 | 2021-12-13 | Recycling treatment method of hazardous waste in pharmaceutical industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114196424A true CN114196424A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111517392.5A Pending CN114196424A (en) | 2021-12-13 | 2021-12-13 | Recycling treatment method of hazardous waste in pharmaceutical industry |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767920A (en) * | 2008-12-30 | 2010-07-07 | 新疆华易石油工程技术有限公司 | Oil field oil sludge treatment method |
| CN102335668A (en) * | 2010-07-19 | 2012-02-01 | 车磊 | Method for treating industrial hazardous wastes containing organic solvent |
| CN102604662A (en) * | 2012-03-21 | 2012-07-25 | 河北工业大学 | Process for finely recovering and recycling oil products from pyrolysis gas in process of converting waste plastic into oil |
| CN103980921A (en) * | 2014-05-29 | 2014-08-13 | 曹文祥 | Process for producing fuel oil by thermal cracking of biomass |
| CN206019277U (en) * | 2016-08-30 | 2017-03-15 | 江苏先锋干燥工程有限公司 | Vacuum belt drier solvent recovering system |
| CN107312568A (en) * | 2017-06-27 | 2017-11-03 | 爱润森德（天津）能源科技有限公司 | A kind of waste mineral oil catalytic pyrolysis utilization system and its processing technology |
| CN107400530A (en) * | 2017-06-30 | 2017-11-28 | 河南地之绿环保科技有限公司 | A kind of process of waste old fuel oil |
| CN112316468A (en) * | 2020-11-04 | 2021-02-05 | 杭州索孚化工工程技术有限公司 | Method for treating still residue and waste salt |
| CN113546946A (en) * | 2021-07-23 | 2021-10-26 | 浙江中蓝环境科技有限公司 | Anaerobic dry distillation treatment method for medical waste |
-
2021
- 2021-12-13 CN CN202111517392.5A patent/CN114196424A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767920A (en) * | 2008-12-30 | 2010-07-07 | 新疆华易石油工程技术有限公司 | Oil field oil sludge treatment method |
| CN102335668A (en) * | 2010-07-19 | 2012-02-01 | 车磊 | Method for treating industrial hazardous wastes containing organic solvent |
| CN102604662A (en) * | 2012-03-21 | 2012-07-25 | 河北工业大学 | Process for finely recovering and recycling oil products from pyrolysis gas in process of converting waste plastic into oil |
| CN103980921A (en) * | 2014-05-29 | 2014-08-13 | 曹文祥 | Process for producing fuel oil by thermal cracking of biomass |
| CN206019277U (en) * | 2016-08-30 | 2017-03-15 | 江苏先锋干燥工程有限公司 | Vacuum belt drier solvent recovering system |
| CN107312568A (en) * | 2017-06-27 | 2017-11-03 | 爱润森德（天津）能源科技有限公司 | A kind of waste mineral oil catalytic pyrolysis utilization system and its processing technology |
| CN107400530A (en) * | 2017-06-30 | 2017-11-28 | 河南地之绿环保科技有限公司 | A kind of process of waste old fuel oil |
| CN112316468A (en) * | 2020-11-04 | 2021-02-05 | 杭州索孚化工工程技术有限公司 | Method for treating still residue and waste salt |
| CN113546946A (en) * | 2021-07-23 | 2021-10-26 | 浙江中蓝环境科技有限公司 | Anaerobic dry distillation treatment method for medical waste |
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