CN209537349U - A kind of VCM rectification system of energy-saving and water-saving - Google Patents
A kind of VCM rectification system of energy-saving and water-saving Download PDFInfo
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- CN209537349U CN209537349U CN201920169530.7U CN201920169530U CN209537349U CN 209537349 U CN209537349 U CN 209537349U CN 201920169530 U CN201920169530 U CN 201920169530U CN 209537349 U CN209537349 U CN 209537349U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a kind of VCM rectification systems of energy-saving and water-saving comprising water source, acetylene reaction kettle, vinyl chloride reaction kettle, hydrogen chloride air accumulator, complete condenser, dehydration device, low boiling tower, recyclable device, high boiling tower, gas holder, the big tank of dichloroethanes, desalination water source, cooling tower, oxygen-eliminating device, vapour source, boiler and water tank.The utility model has the advantages that the utility model connection relationship is simple, Yi Shixian；Desalted water absorbs the thermal energy of thick vinyl chloride gas, avoids the waste of thermal energy, while reducing the intake of steam in oxygen-eliminating device, has saved thermal energy；Reduce the sewage load of Sewage Disposal, while saving the water consumption for participating in acetylene reaction；It realizes and vinyl chloride is separated into recycling from high-boiling components, reduce the production cost for generating polyvinyl chloride, while improving the purity of dichloroethanes, improve the quality of dichloroethanes, meet the demand of client.
Description
Technical field:
The utility model relates to the VCM rectification systems of a kind of distillation system more particularly to a kind of energy-saving and water-saving.
Background technique:
Vinyl chloride (abbreviation VCM) be produce polyvinyl chloride (abbreviation PVC) raw material, due to PVC material extensive use and
It is mass produced；Domestic enterprise generally uses carbide to produce vinyl chloride at present, i.e., calcium carbide is reacted with water generates acetylene gas
Body, acetylene gas and hydrogen chloride gas hybrid reaction obtain thick vinyl chloride gas, but often contain in thick vinyl chloride gas
The weights composition impurity such as acetylene, hydrogen, dichloroethanes needs that purity could be obtained by distillation process removing impurity very high
Vinyl chloride product polymerize for PVC；The distillation process of vinyl chloride is mainly that thick vinyl chloride gas enters in complete condenser and condenses at present,
Most of vinyl chloride gas is set to liquefy, liquefied vinyl chloride is sent into low boiling tower after dehydration device is dehydrated to be distilled, and thick chlorine is removed
Light-component gas such as acetylene, hydrogen in ethylene etc., the light-component gas for then obtaining low boiling tower are sent in recyclable device and return
It receives；The vinyl chloride liquid without light component of low boiling tower tower bottom, which is sent in high boiling tower, to be distilled, and heavy constituent such as dichloro is removed
Ethane etc., the vinyl chloride gas that tower top obtains high-purity are recovered in gas holder, and the high-boiling components of tower bottom are directly recycled to two chloroethenes
It is sold in the big tank of alkane as product；Had the following problems using above-mentioned rectification process: 1, complete condenser uses 5 DEG C of circulation cold completely
But water is condensed, and the heat of thick vinyl chloride gas is wasted, and is unfavorable for energy conservation, while the water taken off in dehydration device is direct
It is sent to Sewage Disposal and carries out sewage treatment；2, contain a large amount of vinyl chloride in the dichloroethanes separated, cause dichloro
Ethane product is impure, and product quality is lower, while also resulting in the waste of vinyl chloride, increases being produced into for production polyvinyl chloride
This.
Utility model content:
The purpose of this utility model is to provide a kind of connections simply, has saved thermal energy and water resource, and improve chloroethene
The VCM rectification system of the energy-saving and water-saving of alkene recovery efficiency.
The utility model is implemented by following technical solution: a kind of VCM rectification system of energy-saving and water-saving comprising water source,
Acetylene reaction kettle, vinyl chloride reaction kettle, hydrogen chloride air accumulator, complete condenser, dehydration device, low boiling tower, recyclable device, high boiling tower,
Gas holder and the big tank of dichloroethanes；The water source is connected to the water inlet of the acetylene reaction kettle, the outlet of the acetylene reaction kettle
Mouthful and the hydrogen chloride air accumulator gas outlet be connected to the air inlet of the vinyl chloride reaction kettle, the chloroethene alkene reaction
The gas outlet of kettle is connected to the complete condenser thermal medium entrance, the feed liquor of the thermal medium outlet of the complete condenser and the low boiling tower
Mouthful connection, the gas outlet of the low boiling tower is connected to the air inlet of the recyclable device, the liquid outlet of the low boiling tower with it is described
The inlet of high boiling tower is connected to, and the gas outlet of the high boiling tower is connected to the air inlet of the gas holder, and the high boiling tower goes out liquid
Mouth is connected to the inlet of the big tank of the dichloroethanes；Its further include desalination water source, cooling tower, oxygen-eliminating device, vapour source, boiler and
Water tank；The desalination water source is connected to the water inlet of the water inlet of the cooling tower and the oxygen-eliminating device respectively；The cooling
The water outlet of tower is connected to the cold medium entrance of the complete condenser, the outlet of the cold medium of the complete condenser and the oxygen-eliminating device into
Mouth of a river connection, the water outlet of the oxygen-eliminating device is connected to the water inlet of the boiler, the vapour source and the oxygen-eliminating device into
Port connection, the gas outlet of the boiler is connected to the air inlet of the oxygen-eliminating device, the low boiling tower and the high boiling tower respectively；
The water outlet of the dehydration device is connected to the water inlet of the water tank, the water outlet of the water tank and the acetylene reaction
The water inlet of kettle is connected to.
It further, further include three towers of distillation, the inlet of three towers of the distillation and the liquid outlet of the high boiling tower connect
Logical, the liquid outlet of three towers of the distillation be connected to the inlet of the big tank of the dichloroethanes, the gas outlet for distilling three towers and
The air inlet of the gas holder is connected to, and the air inlet of three towers of the distillation is connected to the gas outlet of the boiler.
Further, the desalination water source is connected to the cold medium entrance of the complete condenser.
The advantages of the utility model: 1, the utility model connection relationship is simple, Yi Shixian；Desalted water is sent to after supercooling
It exchanges heat in complete condenser with thick vinyl chloride gas, most of vinyl chloride gas is liquefied in realization, and the desalted water after absorbing heat is sent
Deoxygenation is heated by steam into oxygen-eliminating device, being then routed to heating in boiler becomes steam, and desalted water absorbs thick vinyl chloride
The thermal energy of gas, avoids the waste of thermal energy, while reducing the intake of steam in oxygen-eliminating device, has saved thermal energy；2, it is dehydrated
The water deviate from device is recycled in water tank and uses water as in subsequent acetylene reaction, avoids outlet, reduces sewage
The sewage load for the treatment of stations, while having saved the water consumption for participating in acetylene reaction；3, after high boiling column distillation tower bottom high-boiling components
It is sent in three towers of distillation and continues to distill, realize and vinyl chloride is separated into recycling from high-boiling components, reduce generation polychlorostyrene
The production cost of ethylene, while the purity of dichloroethanes is improved, the quality of dichloroethanes is improved, the need of client are met
It asks.
Detailed description of the invention:
Fig. 1 is the overall structure diagram of the utility model embodiment.
Water source 1, acetylene reaction kettle 2, vinyl chloride reaction kettle 3, hydrogen chloride air accumulator 4, complete condenser 5, dehydration device 6, low boiling
Tower 7, recyclable device 8, high boiling tower 9, gas holder 10, the big tank 11 of dichloroethanes, desalination water source 12, cooling tower 13, oxygen-eliminating device 14, steam
Source 15, boiler 16, water tank 17 distill three towers 18.
Specific embodiment:
Below in conjunction with attached drawing, by embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of VCM rectification system of energy-saving and water-saving comprising water source 1, acetylene reaction kettle 2, vinyl chloride
Reaction kettle 3, hydrogen chloride air accumulator 4, complete condenser 5, dehydration device 6, low boiling tower 7, recyclable device 8, high boiling tower 9, gas holder 10, dichloro
The big tank 11 of ethane, desalination water source 12, cooling tower 13, oxygen-eliminating device 14, vapour source 15, three towers 18 of boiler 16, water tank 17 and distillation；
Water source 1 is connected to the water inlet of acetylene reaction kettle 2, the gas outlet of the gas outlet of acetylene reaction kettle 2 and hydrogen chloride air accumulator 4 and
It is connected to the air inlet of vinyl chloride reaction kettle 3, the gas outlet of vinyl chloride reaction kettle 3 is connected to the thermal medium entrance of complete condenser 5, entirely
The thermal medium outlet of condenser 5 is connected to the inlet of low boiling tower 7, and the gas outlet of low boiling tower 7 and the air inlet of recyclable device 8 connect
Logical, the liquid outlet of low boiling tower 7 is connected to the inlet of high boiling tower 9, and the gas outlet of high boiling tower 9 is connected to the air inlet of gas holder 10,
The liquid outlet of high boiling tower 9 is connected to the inlet of three towers 18 of distillation, distills the liquid outlet and the big tank 11 of dichloroethanes of three towers 18
The gas outlet of inlet connection, three towers 18 of distillation is connected to the air inlet of gas holder 10；Desalination water source 12 respectively with cooling tower 13
Water inlet, the water inlet of oxygen-eliminating device 14 are connected to the cold medium entrance of complete condenser 5；The water outlet of cooling tower 13 and complete condenser 5
The cold medium outlet of the connection of cold medium entrance, complete condenser 5 is connected to the water inlet of oxygen-eliminating device 14, the water outlet and pot of oxygen-eliminating device 14
The water inlet of furnace 16 is connected to, and vapour source 15 is connected to the air inlet of oxygen-eliminating device 14, the gas outlet of boiler 16 respectively with oxygen-eliminating device 14,
Low boiling tower 7, high boiling tower 9 are connected to the air inlet of three towers 18 of distillation；The water outlet of dehydration device 6 and the water inlet of water tank 17 connect
Logical, the water outlet of water tank 17 is connected to the water inlet of acetylene reaction kettle 2.
Working principle: being added calcium carbide in acetylene reaction kettle 2 and exothermic reaction occurs for water, generates acetylene gas and is sent to chloroethene
In alkene reaction kettle 3, and it is passed through hydrogen chloride gas into vinyl chloride reaction kettle 3, and catalyst is added, is 150- in temperature
In the environment of 170 DEG C, addition reaction occurs under the effect of the catalyst for acetylene and hydrogen chloride, generates thick vinyl chloride gas, thick chlorine
Comprising the weights component such as acetylene, hydrogen and dichloroethanes in ethylene gas, then by thick vinyl chloride gas be sent in complete condenser 5 into
Row condensation makes most of vinyl chloride gas liquefy, and liquefied vinyl chloride is sent into low boiling tower 7 after the dehydration of dehydration device 6 to be distilled,
The water taken off is sent in water tank 17 and uses water as in subsequent acetylene reaction, avoids outlet, reduces Sewage Disposal
Sewage load, while saved participate in acetylene reaction water consumption；It is distilled by low boiling tower 7, obtained gas (i.e. acetylene
And hydrogen) it is sent to the recycling of recyclable device 8, the low-boiling-point substance of tower bottom, which is sent in high boiling tower 9, further to be distilled, obtained gas
(i.e. vinyl chloride) is sent to the storage of gas holder 10, and the high-boiling components of tower bottom are sent in three towers 18 of distillation to be distilled again, by high-boiling components
In vinyl chloride further distill and be recovered in gas holder 10, it is big that the dichloroethanes liquid of tower bottom is recycled to dichloroethanes
It in tank 11, realizes and vinyl chloride is separated and recycled from high-boiling components, reduce the production cost for generating polyvinyl chloride, together
When improve the purity of dichloroethanes, improve the quality of dichloroethanes, meet the demand of client.
During the cold season, desalted water is directly fed to exchange heat in complete condenser 5 with thick vinyl chloride gas；In the hot season, take off
Salt water is first sent to cooling in cooling tower 13, is then delivered in complete condenser 5 and exchanges heat with thick vinyl chloride gas, realizes big portion
Divide vinyl chloride gas liquefaction, the desalted water after absorbing heat, which is sent in oxygen-eliminating device 14, heats deoxygenation by steam, is then sent
Into boiler 16, heating becomes steam, then each leads into three towers 18 of low boiling tower 7, high boiling tower 9 and distillation steam and steams
It evaporates；Desalted water absorbs the thermal energy of thick vinyl chloride gas, avoids the waste of thermal energy, while reducing steam in oxygen-eliminating device 14
Intake has saved thermal energy, and the utility model connection relationship is simple, Yi Shixian.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (3)
1. a kind of VCM rectification system of energy-saving and water-saving comprising water source, acetylene reaction kettle, vinyl chloride reaction kettle, hydrogen chloride
Air accumulator, complete condenser, dehydration device, low boiling tower, recyclable device, high boiling tower, gas holder and the big tank of dichloroethanes；The water source and institute
State the water inlet connection of acetylene reaction kettle, the gas outlet of the gas outlet of the acetylene reaction kettle and the hydrogen chloride air accumulator and
It is connected to the air inlet of the vinyl chloride reaction kettle, the gas outlet of the vinyl chloride reaction kettle and the complete condenser thermal medium entrance
Connection, the thermal medium outlet of the complete condenser is connected to the inlet of the low boiling tower, the gas outlet of the low boiling tower with it is described
The air inlet of recyclable device is connected to, and the liquid outlet of the low boiling tower is connected to the inlet of the high boiling tower, the high boiling tower
Gas outlet is connected to the air inlet of the gas holder, and the inlet of the liquid outlet of the high boiling tower and the big tank of the dichloroethanes connects
It is logical；It is characterized in that, it further includes desalination water source, cooling tower, oxygen-eliminating device, vapour source, boiler and water tank；The desalination water source
It is connected to respectively with the water inlet of the water inlet of the cooling tower and the oxygen-eliminating device；The water outlet of the cooling tower coagulates entirely with described
The cold medium entrance of device is connected to, and the cold medium outlet of the complete condenser is connected to the water inlet of the oxygen-eliminating device, the oxygen-eliminating device
Water outlet be connected to the water inlet of the boiler, the vapour source is connected to the air inlet of the oxygen-eliminating device, the boiler
Gas outlet is connected to the air inlet of the oxygen-eliminating device, the low boiling tower and the high boiling tower respectively；The water outlet of the dehydration device
Mouth is connected to the water inlet of the water tank, and the water outlet of the water tank is connected to the water inlet of the acetylene reaction kettle.
2. a kind of VCM rectification system of energy-saving and water-saving according to claim 1, which is characterized in that it further includes distillation
Three towers, it is described distillation three towers inlet be connected to the liquid outlet of the high boiling tower, it is described distill three towers liquid outlet with it is described
The inlet of the big tank of dichloroethanes is connected to, and the gas outlet of three towers of the distillation is connected to the air inlet of the gas holder, the distillation
The air inlet of three towers is connected to the gas outlet of the boiler.
3. a kind of VCM rectification system of energy-saving and water-saving according to claim 2, which is characterized in that the desalination water source
It is connected to the cold medium entrance of the complete condenser.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920169530.7U CN209537349U (en) | 2019-01-30 | 2019-01-30 | A kind of VCM rectification system of energy-saving and water-saving |
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| CN201920169530.7U CN209537349U (en) | 2019-01-30 | 2019-01-30 | A kind of VCM rectification system of energy-saving and water-saving |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981686A (en) * | 2019-12-31 | 2020-04-10 | 中国船舶重工集团公司第七一八研究所 | Preparation method and preparation device of 1,1,2, 2-tetradeuteroethylene |
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- 2019-01-30 CN CN201920169530.7U patent/CN209537349U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981686A (en) * | 2019-12-31 | 2020-04-10 | 中国船舶重工集团公司第七一八研究所 | Preparation method and preparation device of 1,1,2, 2-tetradeuteroethylene |
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