CN109925738A - It is a kind of to evaporate tower automatic cleaning system in advance - Google Patents
It is a kind of to evaporate tower automatic cleaning system in advance Download PDFInfo
- Publication number
- CN109925738A CN109925738A CN201910317578.2A CN201910317578A CN109925738A CN 109925738 A CN109925738 A CN 109925738A CN 201910317578 A CN201910317578 A CN 201910317578A CN 109925738 A CN109925738 A CN 109925738A
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- Prior art keywords
- tower
- advance
- pipeline
- evaporate
- differential pressure
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- 238000004140 cleaning Methods 0.000 title claims abstract description 16
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 238000001704 evaporation Methods 0.000 abstract description 17
- 239000012535 impurity Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000010926 purge Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Tower automatic cleaning system is evaporated in advance the invention discloses a kind of, belong to benzene hydrogenation apparatus field, it is pumped including crude benzol, precision type differential pressure filter, tower is evaporated in advance, reboiler and tangent line extraction pump, crude benzol pump is connect by pipeline with precision type differential pressure filter, gate valve is set in connecting pipe between crude benzol pump and precision type differential pressure filter, precision type differential pressure filter with evaporate tower in advance and connect by pipeline, tower is evaporated in advance to connect with reboiler by pipeline, the both ends of reboiler be all arranged pipeline with evaporate tower in advance and connect, the pipeline that tangent line extraction pump is evaporated by pipeline and in advance between tower and reboiler connects.It is of the invention it is pre- evaporate the impurity that tower automatic cleaning system avoids in crude benzol and enter evaporate tower in advance, avoid the pre- impurity for evaporating tower and generating in driving process, realize the pre- self-purging for evaporating tower, the pre- use time for evaporating tower can be greatly prolonged.The system is easy to implement, economical and practical, by a relatively large margin saved production cost, improve produce load, improve economic benefit.
Description
Technical field
The present invention relates to benzene hydrogenation apparatus fields, specifically, evaporating tower automatic cleaning system in advance the present invention relates to a kind of.
Background technique
In benzene hydrogenation process, crude benzol is evaporated the separation of tower weight in advance, and light benzene is carried out through overhead extraction and into conversion zone plus hydrogen
Reaction, tower bottom heavy substance are produced directly as heavy benzol.In crude benzol contain more impurity, contaminant filter it is insufficient can enter evaporate in advance
Tower, moreover, excessive crystalline material, impurity can also be generated in driving process by evaporating tower in advance.In this way with the accumulation of time,
It evaporates and is greatly lowered in advance meeting for tower, can not meet production requirement, the outer cleaning that will entrust or so every half a year evaporates tower tray floor, tower in advance
Kettle, it is time-consuming and laborious expensive, it is biggish to constrain production.Crude benzol enters through crude benzol pump evaporates tower in advance, is evaporating progress negative pressure steaming in tower in advance
It evaporates, for the circulating pump that tower bottom uses for magnetic drive pump, heat source is middle pressure steam.Crude benzol is only filtered by the crude benzol pump pump housing into before evaporating tower in advance
Net filtration, filter area, precision is inadequate, causes excessive impurity to enter and evaporates tower in advance.Tower is evaporated in advance drives initial stage due to evaporating tower in advance
Column bottom temperature is lower, and the substances such as naphthalene in crude benzol slowly crystallize, and naphthalene crystal causes into various factors such as the impurity for evaporating tower in advance
Tower bottom magnetic drive pump for a long time can not be normally-open, needs to clear up filter screen repeatedly, and almost per half an hour will clear up a filter screen.
Initial stage, benzene hydrogenation workshop section drive the time 36 or so, only evaporate in advance tower drive the time reach 24 hours or so, seriously constrain system and open
Vehicle progress.With the slow aggregation for evaporating tower impurity in advance, column bottoms pump will be unable to it is normally-open, at this time by the forced personnel that please entrust outside
Clear up tower tray and tower reactor.Moreover, cleaning filter screen increases workload repeatedly, and the heavy benzol steam smell of volatilization is heavier, damage
Evil human health needs to connect steam blowing when cleaning filter screen every time, and environmental pollution is heavier.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind evaporate tower automatic cleaning system in advance, realize it is pre- evaporate tower oneself
Body purification, improves production efficiency.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: one kind evaporating tower automatic cleaning system in advance,
Including crude benzol pump, precision type differential pressure filter, tower, reboiler and tangent line extraction pump are evaporated in advance, the crude benzol pump passes through pipeline and essence
Close formula differential pressure filter connection, crude benzol, which is pumped, is arranged gate valve, precision type pressure in the connecting pipe between precision type differential pressure filter
Poor filter with evaporate tower in advance and connect by pipeline, evaporate tower in advance and connect with reboiler by pipeline, pipe is all arranged in the both ends of reboiler
Road with evaporate tower in advance and connect, the tangent line extraction pump evaporates the pipeline connection between tower and reboiler by pipeline and in advance.
Preferably, the pre- connecting pipe evaporated between tower and reboiler is siphon connecting tube.
Preferably, the precision type differential pressure filter and gate valve are designed with two, a precision type differential pressure filter and lock
Valve is one group, and two groups of precision type differential pressure filters and gate valve are cascaded.
Using technical solution of the present invention, can obtain it is below the utility model has the advantages that
It is of the invention it is pre- evaporate the impurity that tower automatic cleaning system avoids in crude benzol and enter evaporate tower in advance, avoid the pre- tower that evaporates and driving
The impurity generated in the process realizes the pre- self-purging for evaporating tower, can greatly prolong the pre- use time for evaporating tower.The system is real
Apply simplicity, it is economical and practical, by a relatively large margin saved production cost, improve produce load, improve economic benefit.
Detailed description of the invention
Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:
Fig. 1 is the structural schematic diagram of this system；
Label in above-mentioned figure is equal are as follows: 1, crude benzol pump；2, gate valve；3, precision type differential pressure filter；4, tower is evaporated in advance；5, reboiler；
6, siphon connecting tube；7, tangent line extraction pump.
Specific embodiment
Below against attached drawing, by the description of the embodiment, to for example related each structure of a specific embodiment of the invention
The works such as the shape of part, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further
Detailed description.
As shown in Figure 1, this evaporate in advance tower automatic cleaning system include crude benzol pump 1, precision type differential pressure filter 3, in advance evaporate tower 4,
Reboiler 5 and tangent line extraction pump 7, crude benzol pump 1 is connect by pipeline with precision type differential pressure filter 3, crude benzol pump 1 and precision type pressure
Gate valve 2 is set in the connecting pipe between poor filter 3, and precision type differential pressure filter 3 evaporates tower 4 and connect by pipeline with pre-, in advance
Tower 4 is evaporated to connect with reboiler 5 by pipeline, the both ends of reboiler 5 be all arranged pipeline with evaporate tower 4 in advance and connect, tangent line extraction pump 7 leads to
Piping and the pipeline evaporated between tower 4 and reboiler 5 in advance connect, and evaporate the connecting pipe between tower 4 and reboiler 5 in advance for siphon company
Adapter tube 6, precision type differential pressure filter 3 and gate valve 2 are designed with two, and a precision type differential pressure filter 3 and gate valve 2 are one group,
Two groups of precision type differential pressure filters 3 and gate valve 2 are cascaded.
Crude benzol is filtered crude benzol raw material by precision type differential pressure filter 3, avoids crude benzol into before evaporating tower 4 in advance
In impurity enter evaporate tower 4 in advance, after the extrusion of precision type differential pressure filter 3 reaches setting value, closing gate valve 2 is switched to standby
With precision type differential pressure filter 3, which is cleared up.Removal evaporates 4 tower bottom magnetic drive pump of tower in advance, will be pre-
It evaporates 4 substrate material of tower and reboiler 5 is connected directly to by siphon connecting tube 6, the materials at bottom of tower that gets off in this way is by pervious forced circulation
It is changed to current self-loopa, evaporates 4 materials at bottom of tower of tower circulating-heating by way of thermal siphon in advance.Since thermal siphon has heating speed
It spends very fast feature to see, it is possible to prevente effectively from evaporating the generation for generating naphthalene crystal and other impurities in 4 startup procedure of tower in advance, evaporates tower in advance
4 driving time foreshortened to current 8 hours or so by pervious 24 hours.4 tower bottom heavy benzol of tower is evaporated in advance passes through tangent line extraction pump 7
It directly produces, which is only power 2Kw, greatly reduces production cost.
Sheet evaporates the impurity entrance that tower automatic cleaning system avoids in crude benzol in advance and evaporates tower 4 in advance, avoids the pre- tower 4 that evaporates and is driving
The impurity generated in the process realizes the pre- self-purging for evaporating tower 4, can greatly prolong the pre- use time for evaporating tower 4.The system
Be easy to implement, it is economical and practical, by a relatively large margin saved production cost, improve produce load, improve economic benefit.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing
It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.
Claims (3)
1. a kind of evaporate tower automatic cleaning system in advance, it is characterised in that: including crude benzol pump, precision type differential pressure filter, evaporate tower, again in advance
Device and tangent line extraction pump are boiled, the crude benzol pump is connect by pipeline with precision type differential pressure filter, crude benzol pump and precision type pressure difference
Gate valve is set in the connecting pipe between filter, precision type differential pressure filter with evaporate tower in advance and connect by pipeline, evaporate in advance tower and
Reboiler is connected by pipeline, the both ends of reboiler all be arranged pipeline with evaporate tower in advance and connect, the tangent line, which produces to pump, passes through pipeline
It is connect with the pipeline evaporated between tower and reboiler in advance.
2. pre- tower automatic cleaning system is evaporated according to claim 1, it is characterised in that: described pre- to evaporate between tower and reboiler
Connecting pipe be siphon connecting tube.
Pre- evaporate tower automatic cleaning system 3. according to claim 1, it is characterised in that: the precision type differential pressure filter and
Gate valve is designed with two, and a precision type differential pressure filter and gate valve are one group, two groups of precision type differential pressure filters and gate valve string
It is linked togather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317578.2A CN109925738A (en) | 2019-04-19 | 2019-04-19 | It is a kind of to evaporate tower automatic cleaning system in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317578.2A CN109925738A (en) | 2019-04-19 | 2019-04-19 | It is a kind of to evaporate tower automatic cleaning system in advance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109925738A true CN109925738A (en) | 2019-06-25 |
Family
ID=66990455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317578.2A Pending CN109925738A (en) | 2019-04-19 | 2019-04-19 | It is a kind of to evaporate tower automatic cleaning system in advance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109925738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392575A (en) * | 2021-12-24 | 2022-04-26 | 桐昆集团浙江恒超化纤有限公司 | Production equipment and production process of superfine comfortable fiber |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB755535A (en) * | 1953-01-28 | 1956-08-22 | Exxon Research Engineering Co | Method for purifying crude benzene |
| CN1590359A (en) * | 2001-12-21 | 2005-03-09 | 三菱化学株式会社 | Method of manufacturing lase-of-polymerization substance |
| CN101870666A (en) * | 2010-05-23 | 2010-10-27 | 青岛科技大学 | Refining and reclaiming technology of tail gas absorption solvent in production of toluene diisocyanate |
| CN206538361U (en) * | 2016-12-30 | 2017-10-03 | 新阳科技集团有限公司 | Crude benzol feedstock pre-processing system |
| CN206881179U (en) * | 2017-06-01 | 2018-01-16 | 临涣焦化股份有限公司 | One kind evaporates Tower System in advance |
| CN107890684A (en) * | 2017-12-22 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of reboiler method negative pressure crude benzene distillation system |
| CN210145538U (en) * | 2019-04-19 | 2020-03-17 | 临涣焦化股份有限公司 | An automatic purification system for a pre-distillation tower |
-
2019
- 2019-04-19 CN CN201910317578.2A patent/CN109925738A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB755535A (en) * | 1953-01-28 | 1956-08-22 | Exxon Research Engineering Co | Method for purifying crude benzene |
| CN1590359A (en) * | 2001-12-21 | 2005-03-09 | 三菱化学株式会社 | Method of manufacturing lase-of-polymerization substance |
| CN101870666A (en) * | 2010-05-23 | 2010-10-27 | 青岛科技大学 | Refining and reclaiming technology of tail gas absorption solvent in production of toluene diisocyanate |
| CN206538361U (en) * | 2016-12-30 | 2017-10-03 | 新阳科技集团有限公司 | Crude benzol feedstock pre-processing system |
| CN206881179U (en) * | 2017-06-01 | 2018-01-16 | 临涣焦化股份有限公司 | One kind evaporates Tower System in advance |
| CN107890684A (en) * | 2017-12-22 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of reboiler method negative pressure crude benzene distillation system |
| CN210145538U (en) * | 2019-04-19 | 2020-03-17 | 临涣焦化股份有限公司 | An automatic purification system for a pre-distillation tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392575A (en) * | 2021-12-24 | 2022-04-26 | 桐昆集团浙江恒超化纤有限公司 | Production equipment and production process of superfine comfortable fiber |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190625 |
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| RJ01 | Rejection of invention patent application after publication |