CN213433027U - Ethylene glycol waste liquid recycling device - Google Patents
Ethylene glycol waste liquid recycling device Download PDFInfo
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- CN213433027U CN213433027U CN202021664878.2U CN202021664878U CN213433027U CN 213433027 U CN213433027 U CN 213433027U CN 202021664878 U CN202021664878 U CN 202021664878U CN 213433027 U CN213433027 U CN 213433027U
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- waste liquid
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- ethylene glycol
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Abstract
The utility model provides an ethylene glycol waste liquid regeneration utilizes device, by the waste liquid, pump A, steam heater, pump B, the flash tank, cooler A, finished product jar A, pump C, secondary heater, the evaporimeter, the waste liquid jar, cooler B, finished product jar B, the pipeline is constituteed. The working principle of the device is mainly that different distillation ranges of all components in the ethylene glycol waste liquid mixture are utilized, the ethylene glycol waste liquid mainly subjected to flash evaporation and continuous evaporation is recycled, and the ethylene glycol is purified from the mixture for reuse through condensation after reduced pressure heating distillation. The main process is dehydration, the treatment process is a low-temperature distillation process, and the process is a physical process and cannot damage the original quality and tissue structure of the glycol.
Description
Technical Field
The utility model belongs to the technical field of energy-concerving and environment-protective useless solvent treatment, concretely relates to ethylene glycol waste liquid recycle device.
Background
Ethylene glycol is a colorless, odorless, sweet liquid that is toxic to animals and is lethal to humans at a dose of about 1.6 g/kg. Ethylene glycol is miscible with water and acetone, but has low solubility in ethers. Used as solvent, antifreezing agent and raw material for synthesizing terylene. Polyethylene glycol (PEG), a high polymer of ethylene glycol, is a phase transfer catalyst and is also used for cell fusion; the nitrate is an explosive.
1. The glycol is mainly used for preparing polyester terylene, polyester resin, moisture absorbent, plasticizer, surfactant, synthetic fiber, cosmetics and explosive, and is also used as solvent for dye, printing ink and the like, antifreeze agent for preparing engine, gas dehydrating agent, and wetting agent for preparing resin, glass paper, fiber, leather and adhesive. Can produce synthetic resin PET, fiber grade PET is polyester fiber, and bottle grade PET is used for manufacturing mineral water bottles and the like. Alkyd resins, glyoxal and the like can also be produced and are also used as antifreeze agents. In addition to being used as antifreeze for automobiles, it is also used for the transport of industrial refrigeration, commonly referred to as coolant, and can also be used as a condensing agent as well as water. The ethylene glycol methyl ether series products are high-grade organic solvents with excellent performance, and are used as solvents, diluents and the like of printing ink, industrial cleaning agents, coatings (nitrocellulose lacquer, varnish and enamel paint), copper-clad plates, printing and dyeing and the like.
2. Ethylene glycol properties: appearance and properties: colorless, sweet, viscous liquid vapor pressure: 0.06mmHg (0.06 mm Hg)/20 ℃ viscosity: 25.66 mPas (16 ℃ C.) solubility: it is miscible with water/ethanol/acetone/glyceropyridine acetate, slightly soluble in diethyl ether, insoluble in petroleum hydrocarbon and oil, and capable of dissolving inorganic substances such as calcium chloride/zinc chloride/sodium chloride/potassium carbonate/potassium chloride/potassium iodide/potassium hydroxide. Surface tension: 46.49mN/m (20 ℃ C.) ignition point: combustion heat at 418 ℃: 1180.26KJ/mol is prone to absorb moisture at 25 ℃ when the dielectric constant is 37 ℃ at a high concentration.
3. At present, no special complete equipment is available for recycling domestic glycol waste liquid, and glycol cannot be recycled. Causing huge waste and environmental pollution. The new device invented by my company can make up for this deficiency. The same applies to large amounts.
SUMMERY OF THE UTILITY MODEL
First, the ethylene glycol waste liquid 1 to be distilled is connected to the left inlet of the pump a2 through the pipe L, and is connected to the pipe L from the right outlet end of the pump a2 by a flange, and is connected to the ethylene glycol waste liquid inlet at one end of the steam heater 3 through the pipe L.
The ethylene glycol waste liquid is heated by steam, passes through an outlet of the steam heater 3 after being heated, is connected with an inlet end of the ethylene glycol waste liquid at the upper part of the pump B4 through a pipeline L, and is connected with an upper waste liquid inlet of the flash tank 5 from a right outlet of the pump B4.
The waste liquid enters the flash tank 5 for flash evaporation, at the moment, the part with short carbon chains in the ethylene glycol waste liquid is changed into a gaseous state, the upper end of the flash tank 5 is connected with the inlet end of the cooler A6 through a flange through a pipeline L for cooling to be changed into a liquid state, the lower part of the cooler A6 is connected with the upper inlet of the finished product tank A7, and the finished product is collected in the finished product tank A7.
While the remaining non-evaporated part, which will remain liquid flowing out of the bottom of the flash tank 5, is reheated by connecting the outlet of the flash tank 5 to the pipe L, through which it is connected to the left inlet of the pump C8, and the right outlet of the pump C8 to the bottom inlet of the secondary heater 9.
The upper outlet of the secondary heater 9 is connected with the upper inlet of the evaporator 10, the waste liquid is subjected to secondary evaporation, the upper side of the evaporator 10 is connected with the front inlet of the cooler B12 through a pipeline L, after cooling, the rear outlet of the cooler B12 is connected with the upper inlet of the finished product tank B13, and the finished products subjected to secondary evaporation are collected in the finished product tank B13.
The lower part of the evaporator 10 is connected to the right above the waste liquid tank 11, and the unevaporated waste liquid enters the waste liquid tank 11.
Drawings
FIG. 1 is a connection diagram of a device for purifying and regenerating ethylene glycol waste liquid.
The system consists of waste liquid 1, a pump A2, a steam heater 3, a pump B4, a flash tank 5, a cooler A6, a finished product tank A7, a pump C8, a secondary heater 9, an evaporator 10, a waste liquid tank 11, a cooler B12, a finished product tank B13 and a pipeline L.
FIG. 2 is a process flow diagram of the purification and regeneration of ethylene glycol waste liquid.
Detailed Description
The new equipment structure form of the ethylene glycol waste liquid recycling which adopts flash evaporation and continuous evaporation as main bodies is as follows:
the working principle of the device is mainly that different distillation ranges of all components in the ethylene glycol waste liquid mixture are utilized, and the ethylene glycol is purified from the mixture for reutilization through condensation after reduced pressure heating distillation. The main process is dehydration, the treatment process is a low-temperature distillation process, and the process is a physical process and cannot damage the original quality and tissue structure of the glycol.
A glycol waste liquid recycling device comprises a waste liquid 1, a pump A2, a steam heater 3, a pump B4, a flash tank 5, a cooler A6, a finished product tank A7, a pump C8, a secondary heater 9, an evaporator 10, a waste liquid tank 11, a cooler B12, a finished product tank B13 and a pipeline L.
The method is characterized in that: waste liquid 1 is disposed at the front end of a pump A2, a pump A2 is connected with a pipeline L at the lower front part of a steam heater 3, and the lower rear part of the steam heater 3 is connected with the upper front part of a pump B4.
A flange is arranged at the upper side of the flash tank 5 and is connected with the left front part of a cooler A6, the rear part of a cooler A6 is connected with the right front part of a finished product tank A7, and the rear lower part of the flash tank 5 is connected with a left inlet of a pump C8.
In order to shorten the distance of the connecting pipeline, the heat loss is minimum, and the connecting mode of the connecting pipeline is different from that of other incoming material pipelines in that: the right front of secondary heater 9 sets up the flange, connects the right side export of pump C8, and the lower place sets up the right front that flange and pipeline L connect evaporimeter 10 behind secondary heater 9, and the lug connection is convenient. The resistance is minimal.
The upper front of the waste liquid tank 11 is connected right below the evaporator 10, the flange and the pipeline L are arranged on the upper side of the evaporator 10 and connected with the front of the cooler B12, and the rear of the cooler B12 is connected with the right upper side of the finished product tank B13.
Claims (1)
1. The utility model provides a ethylene glycol waste liquid regeneration device which characterized by: the device comprises waste liquid (1), a pump A (2), a steam heater (3), a pump B (4), a flash tank (5), a cooler A (6), a finished product tank A (7), a pump C (8), a secondary heater (9), an evaporator (10), a waste liquid tank (11), a cooler B (12), a finished product tank B (13) and a pipeline (L);
the waste liquid (1) is arranged at the front end of the pump A (2), the pump A (2) and the pipeline (L) are connected with the lower front part of the steam heater (3), and the lower rear part of the steam heater (3) is connected with the upper front part of the pump B (4);
a flange is arranged on the upper side of the flash tank (5) and connected with the left front part of the cooler A (6), the rear part of the cooler A (6) is connected with the right front part of the finished product tank A (7), and the rear lower part of the flash tank (5) is connected with a left inlet of the pump C (8);
a flange is arranged right in front of the secondary heater (9) and connected with the right outlet of the pump C (8), and a flange and a pipeline (L) are arranged right in front of the evaporator (10) behind and below the secondary heater (9);
the upper front part of the waste liquid tank (11) is connected under the evaporator (10), the flange and the pipeline (L) are arranged on the side upper part of the evaporator (10) and connected with the front part of the cooler B (12), and the rear part of the cooler B (12) is connected with the upper part of the finished product tank B (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664878.2U CN213433027U (en) | 2020-08-05 | 2020-08-05 | Ethylene glycol waste liquid recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664878.2U CN213433027U (en) | 2020-08-05 | 2020-08-05 | Ethylene glycol waste liquid recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213433027U true CN213433027U (en) | 2021-06-15 |
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ID=76309107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021664878.2U Active CN213433027U (en) | 2020-08-05 | 2020-08-05 | Ethylene glycol waste liquid recycling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213433027U (en) |
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2020
- 2020-08-05 CN CN202021664878.2U patent/CN213433027U/en active Active
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