CN206996207U - The device of hydrogen is reclaimed in a kind of butanediol device hydrogenation synthesis emptying end gas from Isosorbide-5-Nitrae - Google Patents
The device of hydrogen is reclaimed in a kind of butanediol device hydrogenation synthesis emptying end gas from Isosorbide-5-Nitrae Download PDFInfo
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- CN206996207U CN206996207U CN201720832368.3U CN201720832368U CN206996207U CN 206996207 U CN206996207 U CN 206996207U CN 201720832368 U CN201720832368 U CN 201720832368U CN 206996207 U CN206996207 U CN 206996207U
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Abstract
The utility model discloses one kind from 1, the device of hydrogen is reclaimed in 4 butanediol device hydrogenation synthesis emptying end gas, by by 1, the emptying end gas of 4-butanediol device is cooled down, gas acetylene device is transported to after purification and washing, the gas of each component carries out selective absorbing, parsing in acetylene concentration unit in tail gas, the components such as hydrogen, methane send gas fractionation unit with the acetylene synthesis gas stream of extraction, the high-purity hydrogen obtained by pressure-variable adsorption is used as raw materials for production and returns to Isosorbide-5-Nitrae-butanediol device.The utility model reasonably optimizing 1, the technological process of 4 butanediols, gas acetylene and gas fractionation unit, transformation by newly added equipment and to part existing equipment, the recovery of hydrogen in synthesis emptying end gas is being realized on the premise of reducing investment in technological upgrading as far as possible, emptying end gas is reduced simultaneously handles the environmental pollution brought through torch burning, the auxiliary consumption of the supporting public affairs of flare system is reduced, extends the service life of torch.
Description
Technical field
The utility model belongs to BDO production technical field, more particularly to a kind of from improvement acetylene-formaldehyde process Isosorbide-5-Nitrae-fourth
The device of hydrogen is reclaimed in the high-pressure hydrogenation synthesis emptying end gas of glycol units.
Background technology
BDO（Isosorbide-5-Nitrae-Butanediol, abbreviation BDO）It is a kind of important basic organic chemical industry and fine chemistry industry
Raw material, it is widely used.Its a variety of derivatives are all the fine chemical products for having high additive value, are widely used in national economy
In multiple fields.
Using natural gas as initial feed, the process route for producing BDO is a kind of section widely used both at home and abroad
Energy, efficient production method.Its technological process is：Raw natural gas is generated in gas acetylene device by partial oxidation reaction
Acetylene and by-product acetylene tail gas；Hydrogen and carbon monoxide are rich in acetylene tail gas, methanol, device for producing hydrogen are sent, for synthesizing methanol
With separation hydrogen；The methanol of gained send formaldehyde plant oxidation production formaldehyde；Acetylene, formaldehyde and hydrogen send acetylene-formaldehyde process 1 as raw material,
The synthetically prepared BDO of 4- butanediol devices.The Gas Comprehensive for being consequently formed complete set utilizes industrial chain.With good
Good economic benefit and social benefit.The existing large-scale joint chemical plant installations covered using this process route domestic at present more.
By acetylene-formaldehyde process BDO device technique flow, thick 1 sent out by BDO high-pressure hydrogenation synthesis procedure,
BDO discharge tank is sent into after the decompression of 4- butanediol solutions, wherein being discharged after the parsing of the gas such as hydrogen dissolved by tank deck, is made
Whole audience torch burning disposal is sent for emptying end gas.Existing in emptying end gas largely can be as the hydrogen of BDO raw material, directly
Burning emptying processing is connect, not only results in the pollution of wastage of material and environment, while it is auxiliary also to increase the supporting public affairs of flare system
Consumption, shorten torch service life.
Utility model content
Goal of the invention of the present utility model is：For above-mentioned problem, there is provided one kind can fully reclaim emptying
Valuable hydrogen in tail gas, the environmental pollution brought is handled through torch burning so as to reduce emptying end gas, reduces flare system
The auxiliary consumption of supporting public affairs, extend torch service life reclaims hydrogen from BDO device hydrogenation synthesis emptying end gas
Device.
What the technical solution of the utility model was realized in：It is a kind of from BDO device hydrogenation synthesis emptying end gas
The device of middle recovery hydrogen, including BDO high-pressure hydrogenation synthesis procedure equipment, BDO discharge tank, natural gas second
Alkyne unit and gas fractionation unit, the BDO high-pressure hydrogenation synthesis procedure equipment pass through pipeline and BDO
Discharge tank connects, it is characterised in that：The top vent of the BDO discharge tank is by dividing journey to be vented adjustment control system
System is connected with emptying end gas cooling and purifying system and whole audience torch respectively, and the bottom leakage fluid dram of the BDO discharge tank leads to
Cross pipeline to be connected with BDO rectification cell, the gas after the processing of emptying end gas cooling and purifying system is defeated by pipeline
Deliver at the cracked gas suction port of compressor of gas acetylene device, the cracking air compressor is connected with acetylene concentration unit, institute
State acetylene concentration unit to be connected with gas fractionation unit, the gas fractionation unit passes through pipeline and BDO high-pressure hydrogenation
Synthesis procedure equipment connects.
The device of hydrogen, its institute are reclaimed in the device hydrogenation synthesis emptying end gas described in the utility model from BDO
Stating emptying end gas cooling and purifying system includes emptying end gas cooling scrubbing tower, circulation fluid cooler and recycle liquid pump, described to put
Empty tail gas cooling scrubbing tower bottom is connected by pipeline with BDO discharge tank top vent, the circulation fluid cooler
Connect to form peripheral passage with the top and the bottom of emptying end gas cooling scrubbing tower by the pipeline for being provided with recycle liquid pump, the emptying
The top of tail gas cooling scrubbing tower is by pipeline with being connected at the cracked gas suction port of compressor of gas acetylene device.
In the device hydrogenation synthesis emptying end gas described in the utility model from BDO reclaim hydrogen device, its
Control valve of the connection emptying end gas cooling scrubbing tower with being provided with control piper break-make on the pipeline of cracking air compressor, the control
The signal that valve processed cuts off the path comes from cracked gas compressor shutdown.
Compared with prior art, the beneficial effects of the utility model are：
1st, the technological process of the utility model reasonably optimizing BDO, gas acetylene and gas fractionation unit, lead to
Newly added equipment and the transformation to part existing equipment are crossed, synthesis emptying end gas is realized on the premise of investment in technological upgrading is reduced as far as possible
The recovery of middle hydrogen.
2nd, the utility model is reduced the burning emptying amount of torch, is reduced and put by the recycling to emptying end gas
Empty exhaust combustion processing carrys out the environmental pollution of band.
3rd, the utility model extends the service life of torch, reduces the consumption of torch fuel gas and smoke elimination steam.
By design of the present utility model, BDO device 1 year recyclable 560 that a set of scale is 100,000 tons~
680 tons of raw hydrogens, the 12% of BDO device hydrogen total burn-off is accounted for, there are considerable economic benefits.Simultaneously
Burning emptying amount and the consumption of fuel gas of torch are greatly reduced, there is good economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is process flow diagram of the present utility model.
Marked in figure：1 is BDO high-pressure hydrogenation synthesis procedure equipment, and 2 be BDO discharge tank, and 3 be day
Right gas acetylene unit, 3a are cracking air compressor, and 3b is acetylene concentration unit, and 3c is cracked gas gas holder, and 4 be gas separation dress
Put, 5 be whole audience torch, and 6 be BDO rectification cell, and 7a is that emptying end gas cools down scrubbing tower, and 7b is circulation fluid cooler,
7c is recycle liquid pump.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in figure 1, the device of hydrogen is reclaimed in a kind of device hydrogenation synthesis emptying end gas from BDO, including 1,
4- butanediol high-pressure hydrogenation synthesis procedures equipment 1, BDO discharge tank 2, gas acetylene device 3 and gas separation dress
Put 4, the gas acetylene device 3 includes cracked gas gas holder 3c, cracking air compressor 3a and acetylene concentration unit 3b, described
BDO high-pressure hydrogenation synthesis procedure equipment 1 is connected by pipeline with BDO discharge tank 2, the BDO
The top vent of discharge tank 2 is fiery with emptying end gas cooling and purifying system and the whole audience respectively by dividing journey to be vented regulation and control system
Torch 5 is connected, and the bottom leakage fluid dram of the BDO discharge tank 2 is connected by pipeline with BDO rectification cell 6, warp
The cracking air compressor that the gas crossed after the processing of emptying end gas cooling and purifying system passes through Pipeline transport to gas acetylene device 3
3a porch, the cracking air compressor 3a are connected with acetylene concentration unit 3b, and the acetylene concentration unit 3b separates with gas
Device 4 is connected, and the gas fractionation unit 4 is connected by pipeline with BDO high-pressure hydrogenation synthesis procedure equipment 1.
Wherein, it is cold to include emptying end gas cooling scrubbing tower 7a, circulation fluid for the newly-increased emptying end gas cooling and purifying system
But device 7b and recycle liquid pump 7c, the emptying end gas cooling scrubbing tower 7a bottoms pass through pipeline and BDO discharge tank 2
Top vent is connected, and the circulation fluid cooler 7b is washed by being provided with recycle liquid pump 7c pipeline with emptying end gas cooling
Tower 7a top and the bottom connect to form peripheral passage, and the top of the emptying end gas cooling scrubbing tower 7a passes through pipeline and natural gas second
The cracking air compressor 3a porch connection of alkyne unit 3, in connection emptying end gas cooling scrubbing tower 7a and cracking air compressor 3a
Pipeline on be provided with the control valve of control piper break-make, the signal that the control valve cuts off the path comes from cracking air compressor
3a is shut down.
It is existing to press acetylene-formaldehyde process BDO technological process, sent out by BDO high-pressure hydrogenation synthesis procedure 1 thick
BDO discharge tank 2 is sent into after BDO solution decompression, wherein by tank deck after a large amount of parsings of the gas such as hydrogen dissolved
Discharge, whole audience torch burning disposal is sent as emptying end gas.
Wherein, BDO high-pressure hydrogenations synthesis emptying end gas condition is as follows：（Unit scale is by 100,000 tons/year of considerations）
Flow:149.8~180kg/h, temperature:90~140 DEG C, pressure: 350kPag；
Concrete component (wt.%):
Gas acetylene device suction port of compressor cracking gas condition：（Gas acetylene device is filled by supporting BDO
Put 40,000 tons/year of considerations of scale）
Flow：39337 kg/h, temperature:35 DEG C, pressure:2~4 kPag；
Key component (wt.%):C2H2For 11.19%；CH4For 4.37%；CO is 23.83%；CO2For 3.39%；H2For
54.04%；N2For 1.56%.
The utility model synthesizes the hydrogen being rich in emptying end gas especially by following methods to BDO high-pressure hydrogenation
Gas is recycled：
A, BDO device high-pressure hydrogenation tail gas emptying regulation and control system is transformed, sets up pressure seperating range control control
Valve, on the premise of BDO device normal operating is ensured, emptying end gas is introduced to by a point journey emptying regulation and control system
In newly-increased emptying end gas cooling scrubbing tower, and under damage, a point journey emptying regulation and control system draws emptying end gas
Enter whole audience torch and carry out burning processing, to ensure the safety operation of device.
On the premise of BDO device normal operating is ensured, it will be put caused by BDO device technique flow
Empty tail gas is sent into newly-increased emptying end gas cooling scrubbing tower and is washed and cooled down, and emptying end gas is in cooling down in scrubbing tower with following
Ring spray liquid carries out counter current contacting, and being removed by the selective absorbing of cleaning solution can not be at natural acetylene unit in tail gas
Methanol, propyl alcohol, butanol and the substantial amounts of moisture of reason, associated media is avoided to downstream gas acetylene device gas concentrate unit
Solvent（1-METHYLPYRROLIDONE）Pollute, the cracking air compressor that the flue after processing transports to gas acetylene device enters
Mouthful, cleaning solution is sent into BDO rectification cell and reclaims the valuable constituents such as butanol therein, to realize time of butanol, methanol
Receive and utilize.
When accident occurs for natural gas acetylene unit, the cut-out on compressor shutdown interlocking of signals cut-out exhaust pipe line
Valve.Tail gas pressure is vented regulation and control system by improved point of journey after rising and automatically switches to torch burning processing, to protect
Demonstrate,prove the safety of acetylene unit and the stable operation of BDO device.
B, after cooling, washing the gas rich in hydrogen and methane send gas acetylene device mixed with cracked gas after by cracking
Air compressor boosts and delivers to acetylene concentration unit.
C, in acetylene concentration unit, selective absorbing, solution are carried out to mixed gas by 1-METHYLPYRROLIDONE solvent
Analysis, the hydrogen in tail gas and methane is set to enter the gas fractionation unit in downstream with acetylene synthesis gas.
D, acetylene synthesis gas will purify the hydrogen obtained as raw material return after gas fractionation unit is by pressure-variable adsorption
BDO device, to realize that the hydrogen being rich in tail gas is fully reclaimed.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (3)
1. the device of hydrogen is reclaimed in a kind of device hydrogenation synthesis emptying end gas from BDO, including BDO high pressure
Hydrogenation synthesis processing apparatus（1）, BDO discharge tank（2）, gas acetylene device（3）And gas fractionation unit（4）,
The BDO high-pressure hydrogenation synthesis procedure equipment（1）Pass through pipeline and BDO discharge tank（2）Connection, its feature
It is：The BDO discharge tank（2）Top vent by divide journey be vented regulation and control system respectively be vented tail
Air cooling cleaning system and whole audience torch（5）Connection, the BDO discharge tank（2）Bottom leakage fluid dram by pipeline with
BDO rectification cell（6）Connection, by emptying end gas cooling and purifying system processing after gas by Pipeline transport extremely
Gas acetylene device（3）Cracking air compressor（3a）Porch, the cracking air compressor（3a）With acetylene concentration unit
（3b）Connection, the acetylene concentration unit（3b）With gas fractionation unit（4）Connection, the gas fractionation unit（4）Pass through pipe
Road and BDO high-pressure hydrogenation synthesis procedure equipment（1）Connection.
2. the device of hydrogen is reclaimed in the device hydrogenation synthesis emptying end gas according to claim 1 from BDO, its
It is characterised by：The emptying end gas cooling and purifying system includes emptying end gas cooling scrubbing tower（7a）, circulation fluid cooler（7b）
And recycle liquid pump（7c）, the emptying end gas cooling scrubbing tower（7a）Bottom passes through pipeline and BDO discharge tank（2）
Top vent connects, the circulation fluid cooler（7b）By being provided with recycle liquid pump（7c）Pipeline and emptying end gas cool down
Scrubbing tower（7a）Top and the bottom connect to form peripheral passage, the emptying end gas cools down scrubbing tower（7a）Top by pipeline with
Gas acetylene device（3）Cracking air compressor（3a）Porch connects.
3. the device of hydrogen is reclaimed in the device hydrogenation synthesis emptying end gas according to claim 2 from BDO, its
It is characterised by：In connection emptying end gas cooling scrubbing tower（7a）With cracking air compressor（3a）Pipeline on be provided with control piper
The control valve of break-make, the signal that the control valve cuts off the path come from cracking air compressor（3a）Shut down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832368.3U CN206996207U (en) | 2017-07-11 | 2017-07-11 | The device of hydrogen is reclaimed in a kind of butanediol device hydrogenation synthesis emptying end gas from Isosorbide-5-Nitrae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832368.3U CN206996207U (en) | 2017-07-11 | 2017-07-11 | The device of hydrogen is reclaimed in a kind of butanediol device hydrogenation synthesis emptying end gas from Isosorbide-5-Nitrae |
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| Publication Number | Publication Date |
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| CN206996207U true CN206996207U (en) | 2018-02-13 |
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| CN201720832368.3U Active CN206996207U (en) | 2017-07-11 | 2017-07-11 | The device of hydrogen is reclaimed in a kind of butanediol device hydrogenation synthesis emptying end gas from Isosorbide-5-Nitrae |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109721450A (en) * | 2018-12-28 | 2019-05-07 | 青海盐湖工业股份有限公司 | A kind of natural gas pyrolysis air pressure compression system |
| CN112724007A (en) * | 2020-12-17 | 2021-04-30 | 中国成达工程有限公司 | System and method for producing succinic acid and PBS (Poly Butylene succinate) by using natural gas |
| CN114682052A (en) * | 2022-03-17 | 2022-07-01 | 廖明昆 | Recovery and carbon reduction system and method for acetylene purge gas in 1, 4-butanediol device |
-
2017
- 2017-07-11 CN CN201720832368.3U patent/CN206996207U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109721450A (en) * | 2018-12-28 | 2019-05-07 | 青海盐湖工业股份有限公司 | A kind of natural gas pyrolysis air pressure compression system |
| CN112724007A (en) * | 2020-12-17 | 2021-04-30 | 中国成达工程有限公司 | System and method for producing succinic acid and PBS (Poly Butylene succinate) by using natural gas |
| CN112724007B (en) * | 2020-12-17 | 2023-07-18 | 中国成达工程有限公司 | System and method for producing succinic acid and PBS (Poly Butylene succinate) by using natural gas |
| CN114682052A (en) * | 2022-03-17 | 2022-07-01 | 廖明昆 | Recovery and carbon reduction system and method for acetylene purge gas in 1, 4-butanediol device |
| CN114682052B (en) * | 2022-03-17 | 2024-04-19 | 廖明昆 | System and method for recycling and reducing carbon of acetylene purge gas in 1, 4-butanediol device |
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