CN108690670A - A kind of gas dehydration takes off hydrocarbon and recycles silica gel absorption technique and device soon - Google Patents
A kind of gas dehydration takes off hydrocarbon and recycles silica gel absorption technique and device soon Download PDFInfo
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- CN108690670A CN108690670A CN201810428372.2A CN201810428372A CN108690670A CN 108690670 A CN108690670 A CN 108690670A CN 201810428372 A CN201810428372 A CN 201810428372A CN 108690670 A CN108690670 A CN 108690670A
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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
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/542—Adsorption of impurities during preparation or upgrading of a fuel
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Abstract
Hydrocarbon is taken off the invention discloses a kind of gas dehydration and recycles silica gel absorption device and technique soon, which includes:Adsorption tower top entry connects unstripped gas admission line;Filter inlet connects adsorption tower outlet at bottom pipeline;Adsorption tower bottom inlet is connected to the pipeline between filter inlet and adsorption tower outlet at bottom;Adsorption tower top exit connects the thermal medium entrance of regeneration gas heat exchanger;The entrance of the cooling Gas Cooler of thermal medium outlet connection of regeneration gas heat exchanger, the entrance of the outlet connection filter of cooling Gas Cooler;The cold medium entrance of regeneration gas heat exchanger connects admission line, the air inlet of cold medium outlet connection heating furnace;The gas outlet of heating furnace connects adsorption tower bottom inlet;Adsorption tower top exit connects the thermal medium entrance of regeneration gas heat exchanger;The entrance of the thermal medium outlet connection regeneration Gas Cooler of regeneration gas heat exchanger regenerates the entrance of the outlet connection regeneration gas separating device of Gas Cooler, regenerates the entrance of the outlet adsorption tower of gas separating device.
Description
Technical field
The invention belongs to natural gas processing technical fields, and in particular to a kind of gas dehydration takes off hydrocarbon and recycles silica gel absorption soon
Technique and device.
Background technology
The gas dehydration of domestic design operation at present takes off hydrocarbon device and is based on low temperature (shallow cold) separating technology.International coverage
From the point of view of, gas dehydration hydrocarbon removal process has developed an important branch, the i.e. fast cycle silicon based on novel silica gel in last decade
Glue adsorption dewatering hydrocarbon removal process.Correlation engineering example has multiple clothes in Canada, Russia and Indonesia etc. is multinational emerges in large numbers
It is engaged in taking off the operation operation of hydrocarbon station in the large-scale Silicagel dehydration of engineering in pipeline.But the relevant technologies are always by certain trans-corporation ridge
It is disconnected, it is domestic without correlation engineering design and application example, it is contemplated that China's natural gas industry is in the starting stage, is national development
The important directions of fungible energy source are cleaned, foreground is huge, while low temperature (shallow cold) separating technology and conventional absorbtion technique are adapting to
Property and operation upper there is also problems, it is therefore necessary to closely follow Gas Industry world cutting edge technology, carry out fast cycle silica gel suction
The research and development application of attached dehydration hydrocarbon removal process.
Low temperature (shallow cold) separating technology and conventional absorbtion technique are respectively present following a series of problems at present.
(1) low temperature (shallow cold) separating technology
1. needing mating refrigeration unit, such as ammonia or propane refrigeration unit, equipment investment is high, and the yard construction period is long;2. complete
Electric load of standing is big, and position of founding the factory is restricted by mating electric power facility around, typically results in collection transmission pipe network and transmission line of electricity investment is high;
3. when the self-built jet dynamic control of remote yard, restricted by refrigeration unit main motor current is high, the specified work(of jet dynamic control
Rate is big, and equipment investment is high;4. heavy constituent content is higher and relatively low in unstripped gas, separating technology power consumption is very for low temperature (shallow cold)
It is close, but the latter's light oil yield is significant lower, causes unit liquid-phase product high energy consumption, benefit low;5. operation is limited by as elasticity
The total tolerance of natural gas, cannot be with water in natural gas and heavy hydrocarbons content fluctuation adjustment processing capacity and energy-saving;6. equipment size
Greatly, auxiliary device and dynamic number of devices are more, are not easy into sled design, can not transition multiplexing.
(2) conventional absorbtion technique
Absorption method be the strong and weak difference using the solid absorbent with porous structure to hydrocarbon component adsorption capacity and
So that hydrocarbon gas is able to the method detached.
Current conventional absorbtion technique has the following problems:
1. can only be dehydrated cannot take off hydrocarbon, heavy hydrocarbon (C5+) the production light oil (raw gasoline) in natural gas can not be recycled.The present invention
By selecting the novel silica gel simultaneously realization of Reasonable Regulation And Control circulation time while dehydration and de- hydrocarbon.2. when having liquid water and hydrocarbon pours in,
It is easy to cause absorption not in time, dry gas can not be up to standard.The present invention selects novel silica gel and uses compounded mix layer, and upper layer is for inhaling
Attached liquid water and hydrocarbon, lower layer are used for adsorptive gaseous water and hydrocarbon.3. relying on dry gas after absorption to regenerate, cause rich regeneration atmospheric pressure low
In tower drying into tower unstripped gas, can not be returned, directly mix with dry gas defeated outside, influences dry gas quality and reduce light oil yield.This
Invention is regenerated using unstripped gas (moisture), be can return to adsorption column inlet after regeneration and is dried.
Invention content
The technical problem to be solved by the present invention is to following problems existing for current gas dehydration hydrocarbon removal process:
One has to rely on the present situation of low temperature (shallow cold) separating technology;
Two conventional absorbtion techniques can only be dehydrated the problem of cannot taking off hydrocarbon;
Three remote, the problem of relying on relatively large jet dynamic control without dispatch from foreign news agency natural gas processing station;
Four be provided simultaneously with dehydration and de- hydrocarbon function and adapt to quick temperature variation field novel silica gel can not type selecting the problem of;
The filling sequence of each functional stuffing and floor height are difficult to determining problem in five adsorption towers;
High Temperature Gas crossfire causes thermal stress harm and silica gel particle when six fast cycle silica gel absorption technique quick automatic switchings
The problem of swelling fracture;
Seven conventional absorbtion techniques rely on dry gas regeneration and cause rich regeneration gas that can not return what tower drying rose with outer gas transmission humidity
Problem;
When heavy constituent content is relatively low in eight unstripped gas the problem of the high power consumption of low temperature (shallow cold) separating technology, low output;
Nine low temperature (shallow cold) separating technology operating flexibility is limited by the problem of natural gas total tolerance;
Ten low temperature (shallow cold) Separation process arrangements size is big, auxiliary device and dynamic number of devices are more, is not easy into sled design
Problem.
In order to solve the above technical problem, the present invention provides a kind of de- hydrocarbon of gas dehydration to recycle silica gel absorption technique soon
And device.Fast cycle silica gel adsorption relies on novel silica gel and fast circulation technology, and breaching traditional silica gel adsorption can only be dehydrated
The application limitation that hydrocarbon cannot be taken off takes off hydrocarbon engineering for gas dehydration and provides a set of completely new solution.
Gas dehydration provided by the invention takes off hydrocarbon and recycles silica gel absorption device soon, including:Adsorption tower, filter, regeneration
Gas heat exchanger, regeneration Gas Cooler, regeneration gas separating device, heating furnace and cooling Gas Cooler;
The adsorption tower top entry connects unstripped gas admission line by setting valvular pipeline;The filter inlet
The adsorption tower outlet at bottom pipeline is connected by pipeline;
The adsorption tower bottom inlet is connected to by pipeline between the filter inlet and the adsorption tower outlet at bottom
Pipeline;The adsorption tower top exit connects the thermal medium entrance of regeneration gas heat exchanger by pipeline;The regeneration gas heat exchange
The thermal medium outlet of device connects the entrance of cooling Gas Cooler by pipeline, and the outlet connection filter of cooling Gas Cooler enters
Mouthful;
The cold medium entrance of the regeneration gas heat exchanger connects admission line, cold medium outlet connection heating furnace by pipeline
Air inlet;The gas outlet of heating furnace connects the adsorption tower bottom inlet by pipeline;The adsorption tower top exit connection
The thermal medium entrance of the regeneration gas heat exchanger;The entrance of the thermal medium outlet connection regeneration Gas Cooler of regeneration gas heat exchanger,
The entrance for regenerating the outlet connection regeneration gas separating device of Gas Cooler, regenerates the outlet unstripped gas admission line of gas separating device
Pipeline between the entrance of the adsorption tower.
Preferably, the adsorption tower is multiple.
It is highly preferred that the adsorption tower is three, including:First adsorption tower, the second adsorption tower and third adsorption tower;
The first, second, and third adsorption tower top entry connects unstripped gas air inlet pipe by setting valvular pipeline
Line;The filter inlet connects the first, second, and third adsorption tower outlet at bottom pipeline by pipeline;
The first, second, and third adsorption tower bottom inlet is connected to the filter inlet and described the by pipeline
One, the pipeline between second and third adsorption tower outlet at bottom;The first, second, and third adsorption tower top exit passes through pipe
Line connects the thermal medium entrance of regeneration gas heat exchanger;
The gas outlet of heating furnace connects the first, second, and third adsorption tower bottom inlet by pipeline;First, second and
Three adsorption tower top exits connect the thermal medium entrance of the regeneration gas heat exchanger;The thermal medium outlet of regeneration gas heat exchanger connects
The entrance for regenerating Gas Cooler regenerates the entrance of the outlet connection regeneration gas separating device of Gas Cooler, regenerates going out for gas separating device
Pipeline between mouth connection unstripped gas admission line and the entrance of first, second, and third adsorption tower.
Preferably, the structure of the adsorption tower, including:
Tower body;
Orifice plate is set in tower body;
First magnetosphere is set to above orifice plate;
Lower layer's layer of silica gel is set to above the first magnetosphere;
Upper layer layer of silica gel is set to above lower layer's layer of silica gel;
Second magnetosphere, the top of setting and upper layer layer of silica gel.
Preferably, lower layer's layer of silica gel is pore aluminum silica gel.
Preferably, the upper layer layer of silica gel is gross porosity aluminum silica gel.
The de- hydrocarbon of gas dehydration for recycling silica gel absorption device soon the present invention also provides the de- hydrocarbon of above-mentioned gas dehydration is fast
Silica gel absorption technique is recycled, is included the following steps:
(1) first circulation state:While first adsorption tower adsorbs, the second absorption tower cooler and the regeneration of third adsorption tower;
Adsorption process:Unstripped gas is adsorbed into the first adsorption tower, and dry gas part enters filter removing silica gel later
It is outer defeated after dust;
Cooling procedure:Dry gas part after the absorption of first adsorption tower enters the second adsorption tower, to the bed of the second adsorption tower
Cooling, the cooling air of the second adsorption column outlet enters the thermal medium entrance of regeneration gas heat exchanger, the thermal medium of regeneration gas heat exchanger
Exit gas enters cooling Gas Cooler, after gas temperature is cooled to 40~50 DEG C, is mixed into the first adsorption column outlet dry gas
Enter outer defeated after filter removing silica gel dust;
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger from unstripped gas admission line, then from again
The cold medium outlet of angry heat exchanger enters heating furnace, and after temperature rises to 260~280 DEG C, the outlet of gas self-heating stove enters
The bottom of tower entrance of third adsorption tower, after heat and mass, the tower top outlet of gas from third adsorption tower enters regeneration gas heat exchanger
Thermal medium entrance, then the thermal medium outlet of gas from regeneration gas heat exchanger enter regeneration Gas Cooler, it is cooling after gas temperature
Degree is down to 40~50 DEG C, and then gas enters regeneration gas separating device from the outlet of regeneration Gas Cooler, and after removing liquid phase, gas is certainly
The entrance of gaseous phase outlet the first adsorption tower of return of regeneration gas separating device enters the first adsorption tower after being mixed with unstripped gas;
(2) second circulation state:Third absorption tower cooler and the regeneration of the first adsorption tower while second adsorption tower adsorbs
Adsorption process:Unstripped gas is adsorbed into the second adsorption tower, and dry gas part enters filter removing silica gel later
It is outer defeated after dust;
Cooling procedure:Dry gas part after the absorption of second adsorption tower enters third adsorption tower, to the bed of third adsorption tower
Cooling, the cooling air of third adsorption column outlet enters the thermal medium entrance of regeneration gas heat exchanger, the thermal medium of regeneration gas heat exchanger
Exit gas enters cooling Gas Cooler, after gas temperature is cooled to 40~50 DEG C, is mixed into the second adsorption column outlet dry gas
Enter outer defeated after filter removing silica gel dust;
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger from unstripped gas admission line, then from again
The cold medium outlet of angry heat exchanger enters heating furnace, and after temperature rises to 260~280 DEG C, the outlet of gas self-heating stove enters
The bottom of tower entrance of first adsorption tower, after heat and mass, the tower top outlet of gas from the first adsorption tower enters regeneration gas heat exchanger
Thermal medium entrance, then the thermal medium outlet of gas from regeneration gas heat exchanger enter regeneration Gas Cooler, it is cooling after gas temperature
Degree is down to 40~50 DEG C, and then gas enters regeneration gas separating device from the outlet of regeneration Gas Cooler, and after removing liquid phase, gas is certainly
The entrance of gaseous phase outlet the second adsorption tower of return of regeneration gas separating device enters the second adsorption tower after being mixed with unstripped gas;
(3) third recurrent state:First absorption tower cooler and the regeneration of the second adsorption tower while third adsorption tower adsorbs
Adsorption process:Unstripped gas enters third adsorption tower and is adsorbed, and dry gas part enters filter removing silica gel later
It is outer defeated after dust;
Cooling procedure:Dry gas part after the absorption of third adsorption tower enters the first adsorption tower, to the bed of the first adsorption tower
Cooling, the cooling air of the first adsorption column outlet enters the thermal medium entrance of regeneration gas heat exchanger, the thermal medium of regeneration gas heat exchanger
Exit gas enters cooling Gas Cooler, after gas temperature is cooled to 40~50 DEG C, is mixed into third adsorption column outlet dry gas
Enter outer defeated after filter removing silica gel dust;
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger from unstripped gas admission line, then from again
The cold medium outlet of angry heat exchanger enters heating furnace, and after temperature rises to 260~280 DEG C, the outlet of gas self-heating stove enters
The bottom of tower entrance of second adsorption tower, after heat and mass, the tower top outlet of gas from the second adsorption tower enters regeneration gas heat exchanger
Thermal medium entrance, then the thermal medium outlet of gas from regeneration gas heat exchanger enter regeneration Gas Cooler, it is cooling after gas temperature
Degree is down to 40~50 DEG C, and then gas enters regeneration gas separating device from the outlet of regeneration Gas Cooler, and after removing liquid phase, gas is certainly
The entrance of the gaseous phase outlet return third adsorption tower of regeneration gas separating device enters third adsorption tower after being mixed with unstripped gas.
The present invention can reach following technique effect:
One, the de- hydrocarbon of gas dehydration of the invention recycles silica gel absorption technique and device soon can substitute (shallow cold) point of low temperature
Separating process takes off hydrocarbon for gas dehydration, while making up conventional absorbtion technique and can only be dehydrated the present situation that cannot take off hydrocarbon, handles the day after tomorrow
Right gas can meet supercharging, outer defeated and combustion quality demand, while recycle light oil (raw gasoline), increase economic efficiency.And for
Gas field newly developed, lean gas gas field, gas field marginal well, equipment investment, operating cost, personnel authorization and construction period etc. all
It has a clear superiority, there is higher economic benefit.
Two, existing low temperature (shallow cold) separating technology and conventional absorbtion technology are highly developed, are suitable for natural gas
Heavy hydrocarbons content is high, operating pressure is low or only needs the process demand being dehydrated.The present invention is inherently to solve gas dehydration to take off
The problem that hydrocarbon process program is single, economic optimum restricted application and operating flexibility are low, then solve filler type selecting, filling side
Case, technique are optimal, be switched fast control and a series of problems, such as device is at sled, it is de- to gas dehydration to meet all kinds of gas field developments
Hydrocarbon technique, the demand of construction period and transition multiplexing.
Description of the drawings
Fig. 1 is that the de- hydrocarbon of gas dehydration of the present invention recycles silica gel absorption schematic device soon;
Fig. 2 is the adsorption tower sectional structure chart of the present invention.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
In conjunction with shown in Fig. 1, a kind of gas dehydration of present invention offer takes off hydrocarbon and recycles silica gel absorption device soon, including:First
Adsorption tower T-100, the second adsorption tower T-200, third adsorption tower T-300, filter F -200, regeneration gas heat exchanger E-200, again
Angry cooler E-300, regeneration gas separating device V-400, heating furnace H-200 and cooling Gas Cooler E-400;
First adsorption tower T-100, the second adsorption tower T-200 and third adsorption tower T-300 top entries are by being equipped with valve
Pipeline connect unstripped gas admission line;- 200 entrance of filter F connects the first adsorption tower T-100, the second absorption by pipeline
Tower T-200 and third adsorption tower T-300 outlet at bottom.This pipeline is connected as the pipeline connection of adsorption process;
First adsorption tower T-100, the second adsorption tower T-200 are connected to third adsorption tower T-300 bottom inlets by pipeline
- 200 entrance of filter F and the first adsorption tower T-100, the second adsorption tower T-200 and third adsorption tower T-300 outlet at bottom it
Between pipeline;First adsorption tower T-100, the second adsorption tower T-200 are connected with third adsorption tower T-300 top exits by pipeline
The thermal medium entrance of regeneration gas heat exchanger E-200;The thermal medium outlet of regeneration gas heat exchanger E-200 connects cooling air by pipeline
The entrance of cooler E-400, the entrance of the outlet connection filter F -200 of cooling Gas Cooler E-400.This pipeline be connected as
The pipeline of cooling procedure connects;
The cold medium entrance of regeneration gas heat exchanger E-200 connects admission line, cold medium outlet connection heating by pipeline
The air inlet of stove H-200;The gas outlet of heating furnace H-200 connects the first adsorption tower T-100, the second adsorption tower T- by pipeline
200 and third adsorption tower T-300 bottom inlets;First adsorption tower T-100, the second adsorption tower T-200 and third adsorption tower T-300
Top exit connects the thermal medium entrance of regeneration gas heat exchanger E-200;The thermal medium outlet connection of regeneration gas heat exchanger E-200 is again
The entrance of angry cooler E-300, the entrance of the outlet connection regeneration gas separating device V-400 of regeneration Gas Cooler E-300, regeneration
The outlet unstripped gas admission line of gas separating device V-400 and the first adsorption tower T-100, the second adsorption tower T-200 and third
Pipeline between the entrance of adsorption tower T-300.This pipeline is connected as connecting for the pipeline of regenerative process.
As shown in Fig. 2, the first adsorption tower T-100, the second adsorption tower T-200 and the third adsorption tower T-300 of the present invention
Structure it is consistent, include:
Tower body 10;
Orifice plate 11 is set in tower body 10;
First magnetosphere 12 is set to 11 top of orifice plate;
Lower layer's layer of silica gel 13 is set to 12 top of the first magnetosphere;Wherein lower layer's layer of silica gel 13 is pore aluminum silica gel, lower layer
Silica gel there is good vaporous water, hydrocarbon to capture, adsorb and capillary condensation performance, be the main bed for controlling water, hydrocarbon dew point;
Upper layer layer of silica gel 14 is set to 13 top of lower layer's layer of silica gel;Wherein, lower layer's layer of silica gel 13 is gross porosity aluminum silica gel, on
Layer silica gel can keep good mechanical strength and Abrasion properties in a moistened state, right for filtering and adsorbing liquid water, hydrocarbon
Lower layer's silica gel plays a protective role
Second magnetosphere 15, the top of setting and upper layer layer of silica gel 14;
Wherein, the side wall of adsorption tower is equipped with discharge port 110, discharging when being replaced for silica gel.Silica gel replacing construction is generally 2
~5 years, the replacement cycle depended primarily on adsorption cycle switching frequency.
Lower layer's layer of silica gel 13 and upper layer layer of silica gel 14 select silochrom and Kiselgel A respectively:
Novel silica gel is known as aluminum silica gel (Alumina-Silica Gel), contains SiO simultaneously2And Al2O3Component, and
Al2O3Content is one of product important indicator, and gross porosity and pore aluminum silica gel component, structure and performance parameters see the table below.
It is illustrated below with specific embodiment:
The selection of technique
Fast cycle silica gel absorption is dehydrated hydrocarbon removal process;Specific circulation step is as follows:
(1) first circulation state:The second adsorption tower T-200 is cooling while first adsorption tower T-100 absorption and third is inhaled
Attached tower T-300 regeneration
Adsorption process:Unstripped gas is adsorbed into the first adsorption tower T-100, and dry gas part enters filter F-later
It is outer defeated after 200 removing silica gel dust;
Cooling procedure:After first adsorption tower T-100 absorption, the dry gas part of outlet enters the second adsorption tower T- from bottom to top
200, the bed of the second adsorption tower T-200 is cooled down, the cooling air of the outlets T-200 enters regeneration gas heat exchange at the top of the second adsorption tower
The thermal medium outlet gas of the thermal medium entrance of device E-200, regeneration gas heat exchanger E-200 enters cooling Gas Cooler E-400, gas
After temperature is cooled to 45 DEG C, it is mixed into filter F -200 with the first outlets adsorption tower T-100 dry gas and removes silica gel dust
It is outer defeated afterwards.Cooling gas flow is about handle tolerance 15%~25%, cooling procedure motive force about 1~1.5bar.
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger E-200 from unstripped gas admission line, then
Enter heating furnace H-200 from the cold medium outlet of regeneration gas heat exchanger E-200, after temperature rises to 260 DEG C~280 DEG C, gas is certainly
The outlet of heating furnace H-200 is into the bottom of tower entrance of third adsorption tower T-300, and after mass-and heat-transfer, gas is from third adsorption tower T-
300 tower top outlet enters the thermal medium entrance of regeneration gas heat exchanger E-200, and then gas is from regeneration gas heat exchanger E-200's
Thermal medium outlet enters regeneration Gas Cooler E-300, and the temperature of gas is down to 45 DEG C after cooling, and then gas regenerates air cooling certainly
But the outlet of device E-300 enters regeneration gas separating device V-400, after removing liquid phase, gas phase of the gas from regeneration gas separating device V-400
The entrance of the first adsorption tower T-100 of outlet return enters the first adsorption tower T-100 after being mixed with unstripped gas;Regeneration gas flow is about
To handle the 25%~30% of tolerance, regenerative process motive force about 2~3bar.
(2) second circulation state:Third adsorption tower T-300 is cooling while second adsorption tower T-200 absorption and first inhales
Attached tower T-100 regeneration
Adsorption process:Unstripped gas is adsorbed into the second adsorption tower T-200, and dry gas part enters filter F-later
It is outer defeated after 200 removing silica gel dust;
Cooling procedure:After second adsorption tower T-200 absorption, the dry gas part of outlet enters third adsorption tower T- from bottom to top
300, the bed of third adsorption tower T-300 is cooled down, the cooling air of third adsorption tower T-300 top exits enters regeneration gas heat exchange
The thermal medium outlet gas of the thermal medium entrance of device E-200, regeneration gas heat exchanger E-200 enters cooling Gas Cooler E-400, gas
After temperature is cooled to 45 DEG C, it is mixed into filter F -200 with the second outlets adsorption tower T-200 dry gas and removes silica gel dust
It is outer defeated afterwards.Cooling gas flow is about handle tolerance 15%~25%, cooling procedure motive force about 1~1.5bar.
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger E-200 from unstripped gas admission line, then
Enter heating furnace H-200 from the cold medium outlet of regeneration gas heat exchanger E-200, after temperature rises to 260 DEG C~280 DEG C, gas is certainly
The outlet of heating furnace H-200 is into the bottom of tower entrance of the first adsorption tower T-100, and after mass-and heat-transfer, gas is from the first adsorption tower T-
100 tower top outlet enters the thermal medium entrance of regeneration gas heat exchanger E-200, and then gas is from regeneration gas heat exchanger E-200's
Thermal medium outlet enters regeneration Gas Cooler E-300, and the temperature of gas is down to 45 DEG C after cooling, and then gas regenerates air cooling certainly
But the outlet of device E-300 enters regeneration gas separating device V-400, after removing liquid phase, gas phase of the gas from regeneration gas separating device V-400
The entrance of the second adsorption tower T-200 of outlet return enters the second adsorption tower T-200 after being mixed with unstripped gas;Regeneration gas flow is about
To handle the 25%~30% of tolerance, regenerative process motive force about 2~3bar.
(3) third recurrent state:The first adsorption tower T-100 is cooling while the T-300 absorption of third adsorption tower and second inhales
Attached tower T-200 regeneration
Adsorption process:Unstripped gas enters third adsorption tower T-300 and is adsorbed, and dry gas part enters filter F-later
It is outer defeated after 200 removing silica gel dust;
Cooling procedure:After the T-300 absorption of third adsorption tower, the dry gas part of outlet enters the first adsorption tower T- from bottom to top
100, the bed of the first adsorption tower T-100 is cooled down, the cooling air of the first adsorption tower T-100 top exits enters regeneration gas heat exchange
The thermal medium outlet gas of the thermal medium entrance of device E-200, regeneration gas heat exchanger E-200 enters cooling Gas Cooler E-400, gas
After temperature is cooled to 45 DEG C, it is mixed into filter F -200 with the outlets third adsorption tower T-300 dry gas and removes silica gel dust
It is outer defeated afterwards.Cooling gas flow is about handle tolerance 15%~25%, cooling procedure motive force about 1~1.5bar.
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger E-200 from unstripped gas admission line, then
Enter heating furnace H-200 from the cold medium outlet of regeneration gas heat exchanger E-200, after temperature rises to 260 DEG C~280 DEG C, gas is certainly
The outlet of heating furnace H-200 is into the bottom of tower entrance of the second adsorption tower T-200, and after mass-and heat-transfer, gas is from the second adsorption tower T-
200 tower top outlet enters the thermal medium entrance of regeneration gas heat exchanger E-200, and then gas is from regeneration gas heat exchanger E-200's
Thermal medium outlet enters regeneration Gas Cooler E-300, and the temperature of gas is down to 45 DEG C after cooling, and then gas regenerates air cooling certainly
But the outlet of device E-300 enters regeneration gas separating device V-400, after removing liquid phase, gas phase of the gas from regeneration gas separating device V-400
The entrance of outlet return third adsorption tower T-300 enters third adsorption tower T-300 after being mixed with unstripped gas;Regeneration gas flow is about
To handle the 25%~30% of tolerance, regenerative process motive force about 2~3bar.
Treatment scale, target and primary operating parameter
1. treatment scale:Natural gas 170 × 104Nm3/ d, light oil (raw gasoline) 30t/d;
2. processing target:
| Outer defeated pressure | 5.5~7.2MPa | Outer defeated temperature | 27~43 DEG C |
| Water content | 1.12kg/104Nm3 | Water dew point | -15℃ |
| Hydrocarbon content | 2.67L/104Nm3 | Hydrocarbon dew point | -15℃ |
3. primary operating parameter:
| Design adsorptive pressure | 7.5MPa | Design adsorption temp | 42℃ |
| Adsorption time | 21min | Recovery time | 20.3min |
| Cooling time | 20.7min | Regeneration temperature | 280℃ |
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art on the basis of the present invention made by equivalent substitute or transformation, in the present invention
Protection domain within.Protection scope of the present invention is subject to claims.
Claims (7)
1. a kind of gas dehydration takes off hydrocarbon recycles silica gel absorption device soon, which is characterized in that including:Adsorption tower, filter, regeneration
Gas heat exchanger, regeneration Gas Cooler, regeneration gas separating device, heating furnace and cooling Gas Cooler;
The adsorption tower top entry connects unstripped gas admission line by setting valvular pipeline;The filter inlet passes through
Pipeline connects the adsorption tower outlet at bottom pipeline;
The adsorption tower bottom inlet is connected to the pipe between the filter inlet and the adsorption tower outlet at bottom by pipeline
Line;The adsorption tower top exit connects the thermal medium entrance of regeneration gas heat exchanger by pipeline;The regeneration gas heat exchanger
Thermal medium outlet connects the entrance of cooling Gas Cooler, the entrance of the outlet connection filter of cooling Gas Cooler by pipeline;
The cold medium entrance of the regeneration gas heat exchanger by pipeline connect admission line, cold medium outlet connection heating furnace into
Gas port;The gas outlet of heating furnace connects the adsorption tower bottom inlet by pipeline;Described in the adsorption tower top exit connection
The thermal medium entrance of regeneration gas heat exchanger;The entrance of the thermal medium outlet connection regeneration Gas Cooler of regeneration gas heat exchanger, regeneration
The entrance of the outlet connection regeneration gas separating device of Gas Cooler, regenerates outlet unstripped gas admission line and the institute of gas separating device
State the pipeline between the entrance of adsorption tower.
2. gas dehydration according to claim 1 takes off hydrocarbon recycles silica gel absorption device soon, which is characterized in that the absorption
Tower is multiple.
3. gas dehydration according to claim 1 takes off hydrocarbon recycles silica gel absorption device soon, which is characterized in that the absorption
Tower is three, including:First adsorption tower, the second adsorption tower and third adsorption tower;
The first, second, and third adsorption tower top entry connects unstripped gas admission line by setting valvular pipeline;Institute
It states filter inlet and the first, second, and third adsorption tower outlet at bottom pipeline is connected by pipeline;
The first, second, and third adsorption tower bottom inlet by pipeline be connected to the filter inlet with described first, the
Pipeline between two and third adsorption tower outlet at bottom;The first, second, and third adsorption tower top exit is connected by pipeline
Connect the thermal medium entrance of regeneration gas heat exchanger;
The gas outlet of heating furnace connects the first, second, and third adsorption tower bottom inlet by pipeline;First, second, and third inhales
Attached top of tower outlet connects the thermal medium entrance of the regeneration gas heat exchanger;The thermal medium outlet connection regeneration of regeneration gas heat exchanger
The entrance of Gas Cooler regenerates the entrance of the outlet connection regeneration gas separating device of Gas Cooler, and the outlet for regenerating gas separating device connects
Logical pipeline between unstripped gas admission line and the entrance of first, second, and third adsorption tower.
4. take off hydrocarbon according to claims 1 to 3 any one of them gas dehydration recycles silica gel absorption device soon, feature exists
In, the structure of the adsorption tower, including:
Tower body;
Orifice plate is set in tower body;
First magnetosphere is set to above orifice plate;
Lower layer's layer of silica gel is set to above the first magnetosphere;
Upper layer layer of silica gel is set to above lower layer's layer of silica gel;
Second magnetosphere, the top of setting and upper layer layer of silica gel.
5. gas dehydration according to claim 4 takes off hydrocarbon recycles silica gel absorption device soon, which is characterized in that the lower layer
Layer of silica gel is pore aluminum silica gel.
6. gas dehydration according to claim 4 takes off hydrocarbon recycles silica gel absorption device soon, which is characterized in that the upper layer
Layer of silica gel is gross porosity aluminum silica gel.
7. the de- hydrocarbon of gas dehydration that the de- hydrocarbon of gas dehydration described in claim 3 recycles silica gel absorption device soon recycles silicon soon
Glue absorbing process, which is characterized in that include the following steps:
(1) first circulation state:While first adsorption tower adsorbs, the second absorption tower cooler and the regeneration of third adsorption tower;
Adsorption process:Unstripped gas is adsorbed into the first adsorption tower, and dry gas part enters filter removing silica gel dust later
It is outer defeated afterwards;
Cooling procedure:Dry gas part after the absorption of first adsorption tower enters the second adsorption tower, is cooled down to the bed of the second adsorption tower,
The cooling air of second adsorption column outlet enters the thermal medium entrance of regeneration gas heat exchanger, the thermal medium outlet gas of regeneration gas heat exchanger
Body enters cooling Gas Cooler, and after gas temperature is cooled to 40~50 DEG C, filtering is mixed into the first adsorption column outlet dry gas
It is outer defeated after device removing silica gel dust;
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger from unstripped gas admission line, then from regeneration gas
The cold medium outlet of heat exchanger enters heating furnace, and after temperature rises to 260~280 DEG C, the outlet of gas self-heating stove enters third
The bottom of tower entrance of adsorption tower, after heat and mass, the heat that the tower top outlet of gas from third adsorption tower enters regeneration gas heat exchanger is situated between
Matter entrance, then the thermal medium outlet of gas from regeneration gas heat exchanger enter regeneration Gas Cooler, it is cooling after gas temperature drop
To 40~50 DEG C, then gas enters regeneration gas separating device from the outlet of regeneration Gas Cooler, and after removing liquid phase, gas regenerates certainly
The entrance of gaseous phase outlet the first adsorption tower of return of gas separating device enters the first adsorption tower after being mixed with unstripped gas;
(2) second circulation state:Third absorption tower cooler and the regeneration of the first adsorption tower while second adsorption tower adsorbs
Adsorption process:Unstripped gas is adsorbed into the second adsorption tower, and dry gas part enters filter removing silica gel dust later
It is outer defeated afterwards;
Cooling procedure:Dry gas part after the absorption of second adsorption tower enters third adsorption tower, is cooled down to the bed of third adsorption tower,
The cooling air of third adsorption column outlet enters the thermal medium entrance of regeneration gas heat exchanger, the thermal medium outlet gas of regeneration gas heat exchanger
Body enters cooling Gas Cooler, and after gas temperature is cooled to 40~50 DEG C, filtering is mixed into the second adsorption column outlet dry gas
It is outer defeated after device removing silica gel dust;
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger from unstripped gas admission line, then from regeneration gas
The cold medium outlet of heat exchanger enters heating furnace, and after temperature rises to 260~280 DEG C, the outlet of gas self-heating stove enters first
The bottom of tower entrance of adsorption tower, after heat and mass, the heat that the tower top outlet of gas from the first adsorption tower enters regeneration gas heat exchanger is situated between
Matter entrance, then the thermal medium outlet of gas from regeneration gas heat exchanger enter regeneration Gas Cooler, it is cooling after gas temperature drop
To 40~50 DEG C, then gas enters regeneration gas separating device from the outlet of regeneration Gas Cooler, and after removing liquid phase, gas regenerates certainly
The entrance of gaseous phase outlet the second adsorption tower of return of gas separating device enters the second adsorption tower after being mixed with unstripped gas;
(3) third recurrent state:First absorption tower cooler and the regeneration of the second adsorption tower while third adsorption tower adsorbs
Adsorption process:Unstripped gas enters third adsorption tower and is adsorbed, and dry gas part enters filter removing silica gel dust later
It is outer defeated afterwards;
Cooling procedure:Dry gas part after the absorption of third adsorption tower enters the first adsorption tower, is cooled down to the bed of the first adsorption tower,
The cooling air of first adsorption column outlet enters the thermal medium entrance of regeneration gas heat exchanger, the thermal medium outlet gas of regeneration gas heat exchanger
Body enters cooling Gas Cooler, and after gas temperature is cooled to 40~50 DEG C, filtering is mixed into third adsorption column outlet dry gas
It is outer defeated after device removing silica gel dust;
Regenerative process:Regeneration gas enters the cold medium entrance of regeneration gas heat exchanger from unstripped gas admission line, then from regeneration gas
The cold medium outlet of heat exchanger enters heating furnace, and after temperature rises to 260~280 DEG C, the outlet of gas self-heating stove enters second
The bottom of tower entrance of adsorption tower, after heat and mass, the heat that the tower top outlet of gas from the second adsorption tower enters regeneration gas heat exchanger is situated between
Matter entrance, then the thermal medium outlet of gas from regeneration gas heat exchanger enter regeneration Gas Cooler, it is cooling after gas temperature drop
To 40~50 DEG C, then gas enters regeneration gas separating device from the outlet of regeneration Gas Cooler, and after removing liquid phase, gas regenerates certainly
The entrance of the gaseous phase outlet return third adsorption tower of gas separating device enters third adsorption tower after being mixed with unstripped gas.
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