CN108201709B - Extraction method for recycling and reusing composite plasticizer - Google Patents
Extraction method for recycling and reusing composite plasticizer Download PDFInfo
- Publication number
- CN108201709B CN108201709B CN201810153341.0A CN201810153341A CN108201709B CN 108201709 B CN108201709 B CN 108201709B CN 201810153341 A CN201810153341 A CN 201810153341A CN 108201709 B CN108201709 B CN 108201709B
- Authority
- CN
- China
- Prior art keywords
- water
- plasticizer
- dehydrating agent
- impurities
- product
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses an extraction method for recycling and reusing a composite plasticizer, which comprises the following steps: (1) adding inorganic dehydrating agent and anhydrous CaSO4, MgSO4, NaSO4 and the like into plasticizer reclaimed material containing a small amount of water, plastic solids and other impurities. Stirring until water absorption reaction is completed for 0.5-2h, and adsorbing trace water in the reclaimed materials; (2) centrifuging to remove impurities: discharging the crude liquid with the water removed in the previous step to a centrifugal machine for centrifugal separation, and continuously feeding, wherein the rotating speed and the feeding amount of the centrifugal separation are determined by the specification of the centrifugal machine. Removing impurities in the reclaimed materials, and discharging the product into a buffer tank. The invention uses the dehydrating agent to absorb water from the plasticizer by-product in the production process, and then separates out impurities such as the dehydrating agent containing water, and the separated dehydrating agent containing water can be sintered and recycled or made into products such as plasterboards to be reused as building materials, thereby reducing the production cost and environmental pollution, and the recycled products meet the standards of industrial grade plasticizer products.
Description
Technical Field
The invention belongs to the technical field of rubber and plastic material additives, and particularly relates to an extraction method for recycling a composite plasticizer.
Background
The plasticizer recycling factory in China removes low boiling point substances by reduced pressure distillation, active carbon is decolorized, and filter pressing and impurity removal are carried out to obtain a finished product, but the product is easy to decompose in the distillation process by adopting the process, more waste active carbon is generated, the waste active carbon is difficult to treat, the filter pressing process is intermittent production, and the yield is low. Plasticizer recyclates generally also do not contain moisture. In some particular processes, however, the plasticizer regrind contains a small amount of moisture, such as less than 2%.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides an extraction method for recycling and reusing a compound plasticizer, aiming at the defects in the prior art, wherein inorganic dehydrating agents such as anhydrous CaSO4, MgSO4 and NaSO4 are used for adsorbing water, impurities such as hydrous inorganic dehydrating agents are separated, and the separated hydrous dehydrating agents can be sintered and recycled or made into products such as gypsum boards to be reused as building materials, so that the production cost is reduced, the environmental pollution is reduced, and the recycled products meet the standards of industrial-grade plasticizer products.
The technical scheme is as follows: the extraction method for recycling the composite plasticizer comprises the following steps:
(1) adding an inorganic dehydrating agent into a plasticizer reclaimed material containing a small amount of water and plastic solid impurities, stirring for 0.5-2h until a water absorption reaction is finished, and adsorbing trace water in the reclaimed material;
(2) centrifuging to remove impurities: discharging the crude liquid from which the water is removed in the last step to a centrifugal machine for centrifugal separation, continuously feeding, removing impurities in the reclaimed materials, and discharging the product to a buffer tank.
Further, the inorganic dehydrating agent adopts anhydrous CaSO4, MgSO4 and NaSO 4.
Further, the inorganic dehydrating agent can completely react with moisture, and the mass part ratio of the inorganic dehydrating agent to the plasticizer reclaimed material is 0.2-5: 100.
Further, the diameter of the centrifuge is 800mm, the rotation speed of the centrifuge is 1500-.
Has the advantages that: the invention has the following beneficial effects:
1. the product uses inorganic dehydrating agent to absorb water from the plasticizer by-product in the plastic production process, and then separates out impurities such as hydrous inorganic dehydrating agent, and the separated hydrous dehydrating agent can be sintered and recycled or made into products such as plasterboards to be reused as building materials, thereby reducing the production cost and environmental pollution, and the recycled products conform to the standards of industrial grade plasticizer products;
2. the process does not adopt distillation separation, and the product is not easy to decompose and the yield is improved;
3. the process does not adopt active carbon for decolorization, and no waste is generated;
4. the process adopts centrifugation to remove impurities, can realize continuous production and improve the yield.
Detailed Description
The invention will be further illustrated with reference to specific examples:
example 1
An extraction method for recycling and reusing a composite plasticizer comprises the following steps:
(1) adding anhydrous CaSO4 into plasticizer reclaimed materials containing a small amount of water and plastic solid impurities, stirring for 1h, and adsorbing trace water in the reclaimed materials;
(2) centrifuging to remove impurities: discharging the crude liquid from which the water is removed in the last step to a centrifugal machine for centrifugal separation, continuously feeding, removing impurities in the reclaimed materials, and discharging the product to a buffer tank;
(3) and (3) product packaging: and (4) inspecting the product to be qualified, subpackaging the product into small barrels, attaching a product label, and warehousing and storing.
Further, the mass part ratio of the anhydrous CaSO4 to the plasticizer reclaimed material is 0.3: 100.
Further, the diameter of the centrifugal machine is 800mm, the rotating speed of the centrifugal machine is 1500 revolutions per minute, and the feeding flow rate is 400L/h.
Example 2
An extraction method for recycling and reusing a composite plasticizer comprises the following steps:
(1) adding anhydrous MgSO4 into plasticizer reclaimed materials containing a small amount of water and plastic solid impurities, stirring for 1h, and adsorbing trace water in the reclaimed materials;
(2) centrifuging to remove impurities: discharging the crude liquid from which the water is removed in the last step to a centrifugal machine for centrifugal separation, continuously feeding, removing impurities in the reclaimed materials, and discharging the product to a buffer tank;
(3) and (3) product packaging: and (4) inspecting the product to be qualified, subpackaging the product into small barrels, attaching a product label, and warehousing and storing.
Further, the mass part ratio of the anhydrous CaSO4 to the plasticizer reclaimed material is 0.6: 100.
Further, the diameter of the centrifugal machine is 800mm, the rotating speed of the centrifugal machine is 1800 rpm, and the feeding flow rate is 600L/h.
Example 3
An extraction method for recycling and reusing a composite plasticizer comprises the following steps:
(1) adding anhydrous NaSO4 into plasticizer reclaimed materials containing a small amount of water and plastic solid impurities, stirring for 1.5h, and adsorbing trace water in the reclaimed materials;
(2) centrifuging to remove impurities: discharging the crude liquid from which the water is removed in the last step to a centrifugal machine for centrifugal separation, continuously feeding, removing impurities in the reclaimed materials, and discharging the product to a buffer tank;
(3) and (3) product packaging: and (4) inspecting the product to be qualified, subpackaging the product into small barrels, attaching a product label, and warehousing and storing.
Further, the mass part ratio of the anhydrous CaSO4 to the plasticizer reclaimed material is 0.5: 100.
Further, the diameter of the centrifuge is 800mm, the rotating speed of the centrifuge is 1650 revolutions per minute, and the feeding flow rate is 500L/h.
1. The product absorbs moisture by using an inorganic dehydrating agent such as CaSO4 as a by-product in the production process, and then separates out impurities such as CaSO4 containing water, and the separated CaSO4 containing water can be sintered to prepare a gypsum board to be reused as a building material, so that the production cost is reduced, the environmental pollution is reduced, and the recovered product meets the standards of industrial-grade plasticizer products;
2. the process does not adopt distillation separation, and the product is not easy to decompose and the yield is improved;
3. the process does not adopt active carbon for decolorization, and no waste is generated;
4. the process adopts centrifugation to remove impurities, can realize continuous production and improve the yield.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. An extraction method for recycling and reusing a composite plasticizer is characterized by comprising the following steps: the method comprises the following steps:
(1) adding an inorganic dehydrating agent into a plasticizer reclaimed material containing a small amount of water and plastic solid impurities, stirring for 0.5-2h until a water absorption reaction is finished, and adsorbing trace water in the reclaimed material;
(2) centrifuging to remove impurities: discharging the crude liquid from which the water is removed in the last step to a centrifugal machine for centrifugal separation, continuously feeding, removing impurities in the reclaimed materials, and discharging the product to a buffer tank;
the inorganic dehydrating agent adopts anhydrous CaSO4, MgSO4 and NaSO4, the inorganic dehydrating agent can completely react with water, the mass part ratio of the inorganic dehydrating agent to the plasticizer recovery material is 0.2-5:100, the diameter of the centrifugal machine is 800mm, the rotating speed of the centrifugal machine is 1500-1800 rpm, and the feeding flow rate is 400-600L/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810153341.0A CN108201709B (en) | 2018-02-22 | 2018-02-22 | Extraction method for recycling and reusing composite plasticizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810153341.0A CN108201709B (en) | 2018-02-22 | 2018-02-22 | Extraction method for recycling and reusing composite plasticizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108201709A CN108201709A (en) | 2018-06-26 |
| CN108201709B true CN108201709B (en) | 2020-08-04 |
Family
ID=62606532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810153341.0A Active CN108201709B (en) | 2018-02-22 | 2018-02-22 | Extraction method for recycling and reusing composite plasticizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108201709B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120022197A2 (en) * | 2009-10-23 | 2012-01-26 | Jihad Dakka | Process for making mixed triglyceride plasticizer from benzoic and toluic acid |
| US8771815B2 (en) * | 2009-12-17 | 2014-07-08 | Exxonmobil Research And Engineering Company | Process for making triglyceride plasticizer |
| CN104290214A (en) * | 2014-08-21 | 2015-01-21 | 天津鑫泰诺高分子科技有限公司 | Regenerative plastic particle formula and manufacturing method thereof |
| CN104387731A (en) * | 2014-08-28 | 2015-03-04 | 天津市利顺塑料制品有限公司 | Waste plastic modification recovery method |
| PT3247481T (en) * | 2015-01-16 | 2020-09-16 | Archer Daniels Midland Co | Purification of plasticizers |
-
2018
- 2018-02-22 CN CN201810153341.0A patent/CN108201709B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108201709A (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107778244B (en) | Method for refining and purifying caprolactam | |
| CN102730721B (en) | Recovering method of by-product sodium chloride in polyphenylene sulfide production | |
| CN103130353B (en) | Treatment method of high-calcium organic wastewater | |
| CN102206196B (en) | Method for recovering morpholine from acidic waste water containing morpholine | |
| CN110072805B (en) | Process for purifying a contaminated hydrochloric acid composition | |
| CN105502551A (en) | Technology for recycling lithium from industrial wastewater | |
| CN115819450A (en) | Processing method for extracting potassium phytate from corn soaking water | |
| CN105198732A (en) | Method for extracting alpha-ketoglutaric acid from fermentation liquor | |
| CN103232318B (en) | With a carbolineum be raw material production anthracene, the method for smart carbazole and luxuriant and rich with fragrance product and device | |
| CN101343135A (en) | Method for treatment of low-concentration organic acid wastewater | |
| CN108201709B (en) | Extraction method for recycling and reusing composite plasticizer | |
| CN104926690A (en) | Method and device for recycling and refining acetonitrile in ceftriaxone sodium synthesis | |
| CN1908041A (en) | Production method of recovering and regenerating high purity ABS from waste and old ABS plastic | |
| CN101857212B (en) | Method for preparing food-grade monoammonium phosphate from wet-process phosphoric acid | |
| CN105367425A (en) | Purification system for chemical method for preparing BHET monomer from waste PET material | |
| CA2907759C (en) | Method for extracting ferulic acid and/or its salts | |
| CN209537358U (en) | A kind of equipment preparing furfural | |
| CN107337308B (en) | Device and process for extracting glycerin from epoxy resin device high-salinity wastewater concentrated solution | |
| CN106698783B (en) | A kind for the treatment of process of epoxy grease plasticizer production waste water | |
| CN105779123B (en) | Cleaning process for decomposing urea-saturated fatty acid methyl ester inclusion compound by choline chloride method | |
| CN104877167A (en) | Method for recycling additive lithium chloride in polyphenylene sulfide resin production process | |
| CN110270582B (en) | Treatment device and process for solid waste residues in nitromethane production | |
| CN204727810U (en) | A kind of purification and recover device for acetonitrile in ceftriaxone sodium synthesis | |
| CN204625515U (en) | A kind of recovery system of caprolactam monomer | |
| CN112694409B (en) | Method and device for recycling triethylamine in wastewater |
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 |