CN107417529A - A kind of method for reclaiming thermal sensitivity hydrocarbon material - Google Patents
A kind of method for reclaiming thermal sensitivity hydrocarbon material Download PDFInfo
- Publication number
- CN107417529A CN107417529A CN201710619778.4A CN201710619778A CN107417529A CN 107417529 A CN107417529 A CN 107417529A CN 201710619778 A CN201710619778 A CN 201710619778A CN 107417529 A CN107417529 A CN 107417529A
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- CN
- China
- Prior art keywords
- tower
- feed liquid
- light ends
- film evaporator
- falling film
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a kind of method for reclaiming thermal sensitivity hydrocarbon material, it is related to the field of material recycle and environmental protection, heating effect can be lifted, reduce the metamorphic reaction of heat sensitive material.The invention mainly includes steps：Feed liquid is delivered to preheater preheating, subsequently into tower, when the feed liquid of tower reactor is full of, tower reactor feed liquid is added into falling film evaporator by circulating pump to heat, vapour phase enters tower bottom, feed liquid by tower top from top to bottom, control tower bottom, in tower, tower top temperature, the Light ends in feed liquid are made to reach boiling point, Light ends vapour phase exports from tower top, condensed into condenser, Light ends condensate liquid enters return tank from condenser bottom, a Light ends liquid part enters tower top as phegma in return tank, a part enters Light ends finished pot as finished product, according to falling film evaporator lower tube box temperature, heavy component in falling film evaporator lower tube box is delivered to heavy component finished pot by delivery pump.
Description
Technical field
The invention belongs to material recycle and field of Environment Protection, more particularly to a kind of method for reclaiming thermal sensitivity hydrocarbon material.
Background technology
Heat sensitive material is a kind of material of case of thermal instability, and this kind of material heat is easily decomposed, polymerize, aoxidized
Metamorphic reaction, cause economically heavy losses.These class materials mainly have food, some hydro carbons.Hydro carbons in heat sensitive material
Material in modern chemical industry production using more and more extensive, if discharge can cause environmental pollution, for improve the utilization of hydro carbons and
The recycling of hydro carbons need to be carried out by preventing the pollution of the environment.The recovery of traditional thermal sensitivity hydro carbons is to utilize reboiler, tower, cold
The equipment such as condenser carry out continuous still, ceaselessly add material liquid and keep constantly having the distillate of definite composition to flow out.But make
Heated with reboiler, material flow is low, and heat time length, thermal sensitivity hydro carbons easily decomposes, polymerize, aoxidizes iso-metamorphism
Reaction, prevents operation from being carried out continuously, and may can also set off an explosion during the reaction such as thermal sensitivity hydrocarbons are decomposed, cause to pacify
Full accident.
The content of the invention
The invention provides a kind of method for reclaiming thermal sensitivity hydrocarbon material, accelerates Matter Transfer, material using circulating pump
Flow velocity is fast, shortens the heat time, improves heating effect, reduces that heat sensitive material is decomposed, polymerize, to aoxidize iso-metamorphism anti-
Should.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of method for reclaiming thermal sensitivity hydrocarbon material, comprises the following steps：
（1）Feed liquid containing thermal sensitivity hydro carbons is delivered to preheater preheating；
（2）Feed liquid after the preheating enters tower；
（3）When the feed liquid of tower reactor reaches 80%, tower reactor feed liquid is added into falling film evaporator heating；
（4）Material falling film evaporator upper end bobbin carriage enter, be uniformly distributed by distributor, in falling film evaporator heat exchanger tube into
Uniformly membranaceous to flow from top to bottom, in flow process, membranaceous liquid is by shell side heating medium heating vaporization；
（5）Vapour phase enters tower bottom, by tower bottom from bottom to top, feed liquid by tower top from top to bottom, on every block of column plate bubbling,
Transmission of heat by contact, in control tower bottom, tower, tower top temperature, the Light ends in feed liquid are made to reach boiling point；
（6）Light ends vapour phase exports from tower top, is condensed into condenser；
（7）Light ends condensate liquid enters return tank from condenser bottom, and a Light ends liquid part is used as phegma in return tank
Into tower top, a part enters Light ends finished pot as finished product；
（8）According to falling film evaporator lower tube box temperature, heavy component in falling film evaporator lower tube box is delivered to weight by delivery pump
Component finished pot.
Step described above is carried out under vacuum, and the column bottom temperature is more than temperature in the tower, in the tower
Temperature is more than the tower top temperature, and the tower top temperature is higher than the boiling point of light component, and the light component is the component of low boiling point,
The restructuring is divided into the high component of boiling point, and circulating pump is connected on the falling film evaporator.
The beneficial effects of the invention are as follows：The invention provides a kind of method for reclaiming thermal sensitivity hydrocarbon material, steamed with falling liquid film
Send out device to heat instead of reboiler, increase circulating pump in device, accelerate Matter Transfer, heating effect is guaranteed；Falling film evaporator
Material can be uniformly distributed film-like by upper tube box distributor, feed liquid is flowed from top to bottom into uniformly membranaceous in pipe, heating is filled
Point, the heat time is short, which to be made heat sensitive material be less likely to occur to decompose, polymerize, aoxidize iso-metamorphism reacts.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the present invention, the required accompanying drawing used in the present invention will be made below
Simply introduce.
Fig. 1 is the artwork that heat sensitive material is reclaimed in original continuous still.
Fig. 2 is the artwork that heat sensitive material is reclaimed in continuous still new in the present invention.
Specific embodiment
Embodiment 1
Methyl palmitate, Methyl Stearate mixture enter in tower to tower reactor liquid level after feed pump is delivered to preheater preheating
80%, by circulating pump by tower reactor feed liquid add falling film evaporator heat, material falling film evaporator upper end bobbin carriage enter, lead to
Cross distributor to be uniformly distributed, flowed from top to bottom into uniformly membranaceous in falling film evaporator heat exchanger tube, in flow process, membranaceous liquid
For body by shell side heating medium heating vaporization, vapour phase enters tower bottom, by tower bottom from bottom to top, feed liquid by tower top from upper and
Under, bubbling, transmission of heat by contact on every block of column plate, in control tower bottom, tower, tower top temperature, make the Light ends stearic acid first in feed liquid
Ester reaches boiling point, and Light ends Methyl Stearate vapour phase is exported from tower top, condensed into condenser, Light ends Methyl Stearate
Condensate liquid enters return tank from condenser bottom, and when return tank liquid level reaches 30cm or so, squeezing into tower top by reflux pump is used as back
Stream.Under vacuum conditions, 211 DEG C or so of temperature, 195 DEG C or so of tower top temperature in 220 DEG C or so of column bottom temperature, tower, temperature are controlled
After degree is stablized, a part of Light ends Methyl Stearate conduct steams product and enters Light ends tank, a part of Light ends Methyl Stearate
Enter tower top as phegma, heavy constituent methyl palmitate is discharged by pump from by bottom of towe.Constantly entered by raw material in operation,
Methyl palmitate, Methyl Stearate are constantly exported by pump, realize continuous operation.
Embodiment 2
Acrylic acid, butylene acid blend enter in tower after feed pump is delivered to preheater preheating to the 80% of tower reactor liquid level, lead to
Cross circulating pump and tower reactor feed liquid is added into falling film evaporator heating, material enters in falling film evaporator upper end bobbin carriage, passes through distributor
It is uniformly distributed, is flowed from top to bottom into uniformly membranaceous in falling film evaporator heat exchanger tube, in flow process, membranaceous liquid is by shell side
Heat medium heating vaporization, vapour phase enters tower bottom, by tower bottom from bottom to top, feed liquid by tower top from top to bottom, at every piece
Bubbling, transmission of heat by contact on column plate, in control tower bottom, tower, tower top temperature, the Light ends acrylic acid in feed liquid is set to reach boiling point, gently
Component acrylic vapour phase exports from tower top, is condensed into condenser, Light ends acrylic acid condensate liquid enters from condenser bottom
Enter return tank, when return tank liquid level reaches 30cm or so, squeezing into tower top by reflux pump is used as backflow.Under vacuum conditions, control
145 DEG C or so of temperature, 130 DEG C or so of tower top temperature in 160 DEG C or so of column bottom temperature, tower, after temperature stabilization, a part of Light ends
Acrylic acid conduct steams product and enters Light ends tank, and a part of Light ends acrylic acid enters tower top, heavy constituent butylene as phegma
Acid is discharged by pump from by bottom of towe.Constantly entered by raw material in operation, acrylic acid and butenoic acid are constantly exported by pump, the company of realization
Continuous operation.
Described above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications should also regard
For protection scope of the present invention.
Claims (5)
- A kind of 1. method for reclaiming thermal sensitivity hydrocarbon material, it is characterised in that comprise the following steps：（1）Feed liquid containing thermal sensitivity hydro carbons is delivered to preheater preheating；（2）Feed liquid after the preheating enters tower；（3）When the feed liquid of tower reactor reaches 80%, tower reactor feed liquid is added into falling film evaporator heating；（4）Material falling film evaporator upper end bobbin carriage enter, be uniformly distributed by distributor, in falling film evaporator heat exchanger tube into Uniformly membranaceous to flow from top to bottom, in flow process, membranaceous liquid is by shell side heating medium heating vaporization；（5）Vapour phase enters tower bottom, by tower bottom from bottom to top, feed liquid by tower top from top to bottom, on every block of column plate bubbling, Transmission of heat by contact, in control tower bottom, tower, tower top temperature, the Light ends in feed liquid are made to reach boiling point；（6）Light ends vapour phase exports from tower top, is condensed into condenser；（7）Light ends condensate liquid enters return tank from condenser bottom, and a Light ends liquid part is used as phegma in return tank Into tower top, a part enters Light ends finished pot as finished product；（8）According to falling film evaporator lower tube box temperature, heavy component in falling film evaporator lower tube box is delivered to weight by delivery pump Component finished pot.
- 2. according to the method for the recovery thermal sensitivity hydrocarbon material described in claim 1, it is characterised in that the step is true Carried out under empty condition.
- 3. according to the method for the recovery thermal sensitivity hydrocarbon material described in claim 1, it is characterised in that the column bottom temperature is big The temperature in the tower, temperature is more than the tower top temperature in the tower.
- 4. according to the method for reclaiming heat sensitive material described in claim 1 or 3, it is characterised in that the tower top temperature is high In the boiling point of light component.
- 5. according to the method for reclaiming heat sensitive material described in claim 1, it is characterised in that connect on the falling film evaporator Connect circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619778.4A CN107417529A (en) | 2017-07-26 | 2017-07-26 | A kind of method for reclaiming thermal sensitivity hydrocarbon material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619778.4A CN107417529A (en) | 2017-07-26 | 2017-07-26 | A kind of method for reclaiming thermal sensitivity hydrocarbon material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107417529A true CN107417529A (en) | 2017-12-01 |
Family
ID=60430396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710619778.4A Pending CN107417529A (en) | 2017-07-26 | 2017-07-26 | A kind of method for reclaiming thermal sensitivity hydrocarbon material |
Country Status (1)
| Country | Link |
|---|---|
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125770A (en) * | 2010-12-15 | 2011-07-20 | 天津大学 | Continuous rectification device and method for treating heat-sensitive material by using wiped film evaporator |
-
2017
- 2017-07-26 CN CN201710619778.4A patent/CN107417529A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125770A (en) * | 2010-12-15 | 2011-07-20 | 天津大学 | Continuous rectification device and method for treating heat-sensitive material by using wiped film evaporator |
Non-Patent Citations (2)
| Title |
|---|
| 何近恪: "《黑荆树及其利用》", 30 June 1991, 中国林业出版社 * |
| 王清泉: ""法国降膜式高效精馏塔"", 《四川林业科技》 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |