CN108048146A - The regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle - Google Patents
The regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle Download PDFInfo
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- CN108048146A CN108048146A CN201711099332.XA CN201711099332A CN108048146A CN 108048146 A CN108048146 A CN 108048146A CN 201711099332 A CN201711099332 A CN 201711099332A CN 108048146 A CN108048146 A CN 108048146A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
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Abstract
The invention discloses a kind of regenerated high-pressure natural gas drying processes of alternating temperature transformation closed cycle.After pipeline gas displacement, moist natural gas enters the absorption of A towers, while B towers carry out the parsing aqueous vapor separation of pressure release heat gas and press, and then A towers, B tower working conditions swap.The present invention is adsorbed, parsed in low-pressure, carried out adsorbent decompression regeneration, thus greatly reduce the energy needed for adsorbent reactivation with principle of pressure swing adsorption at elevated pressures.Heating process is carried out reproducing adsorbent to improve adsorbent reactivation temperature, so that adsorbent reactivation is more thorough, thus the finished product gas of lower dew point can be obtained.Regeneration is carried out using the low-pressure low-temperature natural gas of refrigerated separation and blows cold, and circulating cold air use will be blown, it is larger to blow air conditioning quantity, and it is long to blow cool time, blow it is cold thoroughly, so as to ensure that finished product gas dew point without drift.It heated with the finished product gas after decompression, blow cold air, thus substantially reduce the operating pressure of wind turbine, heater.
Description
Technical field：
The invention belongs to gas dry technical field, more particularly to a kind of regenerated high pressure of alternating temperature transformation closed cycle is natural
Gas drying process.
Background technology：
Energy and environment are current global hot issues, and natural gas is as city clean energy resource, to the energy section in China
About, the development of environmental protection, the raising of living standards of the people and social economy plays important facilitation.However unstripped gas
It not directly uses, because liquid water may be precipitated in compressed natural gas.The presence of liquid water will be to automobile and aerating
The safety stood etc. generates serious damage such as system ice and blocks up, and ice, which blocks up phenomenon, can cause gas station to can not achieve normal aerating, automobile without
Method is started and run；In a high voltage state, the presence of liquid water can generate hydrate in air reservoir, can equally block pipeline
And valve；The presence of liquid water strengthens acidic components (H2S、CO2) corrosion to pressure vessel and pipeline, and H may occur2S
Stress corrosion cracking and CO2Corrosion cracking causes the generation of the catastrophic failures such as explosion；The presence of liquid water can also generate water
(oil, hydrocarbon) aggregation.Gas dehydration is essential process therefore.
Compressed natural gas dehydration belongs to deep dehydration, at present nearly all using the method for solid drier absorption.High pressure is natural
Qi exhaustion water high pressure relief regeneration drying apparatus used currently on the market, regeneration gas not reusable edible, waste of resource.
The information for being disclosed in the background section is merely intended to increase the understanding of the general background to the present invention, without answering
When being considered as recognizing or imply that the information structure has been the prior art well known to persons skilled in the art in any form.
The content of the invention：
It is an object of the invention to provide a kind of regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle, thus
Overcome it is above-mentioned in the prior art the defects of.
To achieve the above object, the present invention provides a kind of regenerated high-pressure natural gas back tenders of alternating temperature transformation closed cycle
Skill, step are：
(1) pipeline gas is replaced：Cut off the power, slowly open inlet shutoff valve F1, fore filter, accurate filter,
Fore filter blowdown valve, accurate filter blowdown valve, natural gas enter initial segment pipeline, and detection has the natural gas for reaching concentration
From closing fore filter blowdown valve, accurate filter blowdown when fore filter blowdown valve, the discharge of accurate filter blowdown valve
Valve, fore filter, accurate filter, the displacement of initial segment pipeline are completed；Slowly open valve A1/B1, valve A4/B4, postposition
Filter, post-filter blowdown valve, natural gas enter dryer section pipeline, and detection has the natural gas for reaching concentration to be filtered from postposition
Post-filter blowdown valve is closed when device blowdown valve is discharged, the displacement of dryer section pipeline is completed；Open regeneration gas pressure reducing valve, valve
A2/B2, valve F2/F4/F9, detection have the natural gas for reaching concentration from during the detection mouth discharge of valve F2/F4/F9, close valve
Door F2/F4/F9, the displacement of gas-liquid separation cooling line are completed；
(2) moist natural gas from inlet shutoff valve F1 enters fore filter, accurate filter separates free state water and
After oil, A towers are entered by valve A1, by the duct type diffuser of tower top, gas is uniformly spread apart between adsorbent bed
Come, fully using all dried mediums, when moist gas flows through adsorbent bed, vapor is adsorbed to drier table
Face；When gas dry reaches required dew point, dry gas comes out from A towers, and through valve A4 to post-filter, gas leads to
The adsorbent powder that may wherein carry secretly is filtered out when crossing post-filter, counterbalance valve is opened after gas pressure reaches setting pressure
It opens, dry, clean gas is exported from dryer export shut-off valve F6；While A towers adsorb, to B tower pressure releases, valve is closed
F3 opens valve B2, F2, observes B pressure tower tables, closes valve F2 when pressure is unloaded to 1.8~2.0MPa, opens valve F3；
(3) pressure release of B towers opens pressure reducing valve, passes through the dried natural gas of sub-fraction after decompression to after setting pressure
Heater is entered by circulating fan into regenerative system, gas after pressure reducing valve depressurizes, the gas of room temperature is added by heater
For heat to about 180~220 DEG C, high-temperature gas carries out heating parsing by valve B3 to the adsorbent of B tower adsorption saturations；
(4) heater is stopped, and high temperature saturated gas penetrates B tower tower bodies, enters forced air cooler to height by valve B2
The cooling of warm saturated gas, the hydrone liquefaction inside gas after cooling, by gas-liquid separator by the water of liquid in gas into
Row separation, the water of liquid enter fluid reservoir, and gas enters circulating fan entrance, a closed cycle regenerative system is formed, when again
Raw outlet temperature is down to setting value, and forced air cooler stops, and cooling stage terminates；
(5) valve B2, B3 are closed, equalizing valve F4, B pressure tower is opened and persistently rises, when pressure rises to and A pressure towers one
It causes, pressure terminates；
(6) close equalizing valve F4, B tower and enter holding state, A towers continue absorption until adsorbent bed close to carrying out again during saturation
Switching；
(7) A towers absorption after, open B tower valve B1, B4, close A tower valve A1, A4, wet gas through valve B1 into
Enter drying tower B to be adsorbed, complete the switching of two towers, A towers are regenerated.
Compared with prior art, the present invention has the advantages that：
It with principle of pressure swing adsorption, is adsorbed, is parsed in low-pressure at elevated pressures, adsorbent is carried out and is depressurized
Regeneration, thus greatly reduces the energy needed for adsorbent reactivation.Heating process is carried out to reproducing adsorbent to improve adsorbent
Regeneration temperature so that adsorbent reactivation is more thorough, thus can obtain the finished product gas of lower dew point.Using the low pressure of refrigerated separation
Cryogenic natural gas carries out regeneration and blows cold, and will blow circulating cold air use, and it is larger to blow air conditioning quantity, and it is long to blow cool time, blow it is cold thoroughly, from
And it ensure that finished product gas dew point without drift.It heated with the finished product gas after decompression, blow cold air, thus make the work of wind turbine, heater
It is substantially reduced as pressure, common wind turbine and low-pressure heater can be used, simplified the structure of wind turbine and heater, greatly reduce
Cost.
Description of the drawings：
Fig. 1 is 1 schematic diagram of external heat surface cooler drying device structure of the present invention；
Specific embodiment：
The specific embodiment of the present invention is described in detail below, it is to be understood that protection scope of the present invention is not
It is restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other components.
As shown in Figure 1, a kind of regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle, step are：
(1) pipeline gas is replaced：Cut off the power, slowly open inlet shutoff valve F1, fore filter, accurate filter,
Fore filter blowdown valve, accurate filter blowdown valve, natural gas enter initial segment pipeline, and detection has the natural gas for reaching concentration
From closing fore filter blowdown valve, accurate filter blowdown when fore filter blowdown valve, the discharge of accurate filter blowdown valve
Valve, fore filter, accurate filter, the displacement of initial segment pipeline are completed；Slowly open valve A1/B1, valve A4/B4, postposition
Filter, post-filter blowdown valve, natural gas enter dryer section pipeline, and detection has the natural gas for reaching concentration to be filtered from postposition
Post-filter blowdown valve is closed when device blowdown valve is discharged, the displacement of dryer section pipeline is completed；Open regeneration gas pressure reducing valve, valve
A2/B2, valve F2/F4/F9, detection have the natural gas for reaching concentration from during the detection mouth discharge of valve F2/F4/F9, close valve
Door F2/F4/F9, the displacement of gas-liquid separation cooling line are completed；
(2) moist natural gas from inlet shutoff valve F1 enters fore filter, accurate filter separates free state water and
After oil, A towers are entered by valve A1, by the duct type diffuser of tower top, gas is uniformly spread apart between adsorbent bed
Come, fully using all dried mediums, when moist gas flows through adsorbent bed, vapor is adsorbed to drier table
Face；When gas dry reaches required dew point, dry gas comes out from A towers, and through valve A4 to post-filter, gas leads to
The adsorbent powder that may wherein carry secretly is filtered out when crossing post-filter, counterbalance valve is opened after gas pressure reaches setting pressure
It opens, dry, clean gas is exported from dryer export shut-off valve F6；While A towers adsorb, to B tower pressure releases, valve is closed
F3 opens valve B2, F2, observes B pressure tower tables, closes valve F2 when pressure is unloaded to 1.8~2.0MPa, opens valve F3；
(3) pressure release of B towers opens pressure reducing valve, passes through the dried natural gas of sub-fraction after decompression to after setting pressure
Heater is entered by circulating fan into regenerative system, gas after pressure reducing valve depressurizes, the gas of room temperature is added by heater
For heat to about 180~220 DEG C, high-temperature gas carries out heating parsing by valve B3 to the adsorbent of B tower adsorption saturations；
(4) heater is stopped, and high temperature saturated gas penetrates B tower tower bodies, enters forced air cooler to height by valve B2
The cooling of warm saturated gas, the hydrone liquefaction inside gas after cooling, by gas-liquid separator by the water of liquid in gas into
Row separation, the water of liquid enter fluid reservoir, and gas enters circulating fan entrance, a closed cycle regenerative system is formed, when again
Raw outlet temperature is down to setting value, and forced air cooler stops, and cooling stage terminates；
(5) valve B2, B3 are closed, equalizing valve F4, B pressure tower is opened and persistently rises, when pressure rises to and A pressure towers one
It causes, pressure terminates；
(6) close equalizing valve F4, B tower and enter holding state, A towers continue absorption until adsorbent bed close to carrying out again during saturation
Switching；
(7) A towers absorption after, open B tower valve B1, B4, close A tower valve A1, A4, wet gas through valve B1 into
Enter drying tower B to be adsorbed, complete the switching of two towers, A towers are regenerated.
The description of the foregoing specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explain that the certain principles of the present invention and its reality should
With so that those skilled in the art can realize and utilize the present invention a variety of exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (1)
1. a kind of regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle, step are：
(1) pipeline gas is replaced：It cuts off the power, slowly opens inlet shutoff valve F1, fore filter, accurate filter, preposition
Filter blowdown valve, accurate filter blowdown valve, natural gas enter initial segment pipeline, and detection has the natural gas the past for reaching concentration
Fore filter blowdown valve, accurate filter blowdown valve, preceding is closed when putting filter blowdown valve, the discharge of accurate filter blowdown valve
Filter, accurate filter are put, the displacement of initial segment pipeline is completed；Slowly open valve A1/B1, valve A4/B4, postposition filtering
Device, post-filter blowdown valve, natural gas enter dryer section pipeline, and detection has the natural gas for reaching concentration to be arranged from post-filter
Post-filter blowdown valve is closed during dirty valve discharge, the displacement of dryer section pipeline is completed；Open regeneration gas pressure reducing valve, valve A2/
B2, valve F2/F4/F9, detection have the natural gas for reaching concentration from during the detection mouth discharge of valve F2/F4/F9, close valve
F2/F4/F9, the displacement of gas-liquid separation cooling line are completed；
(2) moist natural gas from inlet shutoff valve F1 enters fore filter, accurate filter separates free state water and oil after,
A towers are entered by valve A1, by the duct type diffuser of tower top, gas is come between adsorbent bed by uniform spread apart, and fills
Ground is divided to utilize all dried mediums, when moist gas flows through adsorbent bed, vapor is adsorbed to desiccant surface；Work as gas
Soma is dry when reaching required dew point, and dry gas comes out from A towers, and through valve A4 to post-filter, gas passes through postposition
The adsorbent powder that may wherein carry secretly has been filtered out during filter, counterbalance valve is opened after gas pressure reaches setting pressure, dry,
Clean gas is exported from dryer export shut-off valve F6；While A towers adsorb, to B tower pressure releases, valve F3 is closed, is opened
Valve B2, F2 observe B pressure tower tables, close valve F2 when pressure is unloaded to 1.8~2.0MPa, open valve F3；
(3) pressure release of B towers opens pressure reducing valve, by the dried natural gas of sub-fraction after decompression through subtracting to after setting pressure
Heater is entered by circulating fan into regenerative system, gas after pressure valve decompression, the gas of room temperature is heated to by heater
About 180~220 DEG C, high-temperature gas carries out heating parsing by valve B3 to the adsorbent of B tower adsorption saturations；
(4) heater is stopped, and high temperature saturated gas penetrates B tower tower bodies, and entering forced air cooler by valve B2 has enough to eat and wear to height
And gas cooling, the hydrone liquefaction inside gas after cooling are divided the water of liquid in gas by gas-liquid separator
Water from, liquid enters fluid reservoir, and gas enters circulating fan entrance, forms a closed cycle regenerative system, when regenerating
Mouth temperature is down to setting value, and forced air cooler stops, and cooling stage terminates；
(5) close valve B2, B3, open equalizing valve F4, B pressure tower persistently rise, when pressure rise to it is consistent with A pressure towers,
Pressure terminates；
(6) close equalizing valve F4, B tower and enter holding state, A towers continue absorption until adsorbent bed is cut again close to during saturation
It changes；
(7) after the absorption of A towers, B tower valve B1, B4 are opened, closes A tower valve A1, A4, wet gas enters dry through valve B1
Dry tower B is adsorbed, and completes the switching of two towers, A towers are regenerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099332.XA CN108048146A (en) | 2017-11-09 | 2017-11-09 | The regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711099332.XA CN108048146A (en) | 2017-11-09 | 2017-11-09 | The regenerated high-pressure natural gas drying process of alternating temperature transformation closed cycle |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899341A (en) * | 2009-05-26 | 2010-12-01 | 西安联合超滤净化设备有限公司 | Adsorption type high pressure natural gas dehydration process and device |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
| CN103173256A (en) * | 2013-04-18 | 2013-06-26 | 四川科比科油气工程有限公司 | Natural gas multi-tower external cycle anaerobic regeneration dewatering method |
| CN206256033U (en) * | 2016-08-23 | 2017-06-16 | 西安超滤环保科技股份有限公司 | A kind of natual gas dehydrate unit of utilization new energy thermal regeneration |
-
2017
- 2017-11-09 CN CN201711099332.XA patent/CN108048146A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899341A (en) * | 2009-05-26 | 2010-12-01 | 西安联合超滤净化设备有限公司 | Adsorption type high pressure natural gas dehydration process and device |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
| CN103173256A (en) * | 2013-04-18 | 2013-06-26 | 四川科比科油气工程有限公司 | Natural gas multi-tower external cycle anaerobic regeneration dewatering method |
| CN206256033U (en) * | 2016-08-23 | 2017-06-16 | 西安超滤环保科技股份有限公司 | A kind of natual gas dehydrate unit of utilization new energy thermal regeneration |
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Application publication date: 20180518 |
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