CN107469566A - A kind of voltage stabilizing technique of Utilization of PSA Relief Gas - Google Patents
A kind of voltage stabilizing technique of Utilization of PSA Relief Gas Download PDFInfo
- Publication number
- CN107469566A CN107469566A CN201710825560.4A CN201710825560A CN107469566A CN 107469566 A CN107469566 A CN 107469566A CN 201710825560 A CN201710825560 A CN 201710825560A CN 107469566 A CN107469566 A CN 107469566A
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- gas
- stripping
- holder
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- fuel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fuel Cell (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
A kind of voltage stabilizing technique of Utilization of PSA Relief Gas of the present invention, solves the problems, such as to be to provide it is a kind of can by the voltage stabilizing technique for the Utilization of PSA Relief Gas that burnt from the stripping gas voltage stabilizing that pressure-variable adsorption comes out for heat distribution pipe network, the technical scheme used for：Using stripping gas of the 4.3Mpa methanol purge gas as unstripped gas after the direct pressure-variable adsorption of gas-liquid separator rinses, by stripping gas surge tank, stripping gas blending tank, incoming fuel gas gas holder, the fuel gas sent out from the fuel gas gas holder is the combustible gas of pressure stability, and the present invention is widely used in gas stabilized-pressure technical field.
Description
Technical field
The invention belongs to gas stabilized-pressure technical field, the voltage stabilizing technique of more particularly to a kind of Utilization of PSA Relief Gas.
Background technology
PSA stripping gas is as fuel, and flow is short, small investment.But stripping gas is intermittent gas, pressure 0.02~
Fluctuated between 0.06MPa, in adsorption tower sequencing valve failure, pressure oscillation is bigger, causes to convert Control for Kiln Temperature difficulty.Stripping gas
In carry adsorbent dust, the easy blockage phenomenon of stripping gas spark arrester.It is relatively low to desorb gas calorific value, wherein substantial amounts of titanium dioxide
Carbon will not only lose the substantial amounts of combustion heat, also increase flue tolerance and air-introduced machine load, therefore, need to save coal section to reburner and carry out
Transformation, and air-introduced machine is changed, increase load, to meet technological requirement.In addition, high pressure nozzles need to be changed to low pressure mixing nozzles,
To adapt to the low pressure property of stripping gas.When stripping gas makees fuel, relatively for the emptying of scene, reduce the row of toxic and harmful gas
Put, there is certain environment protection significance, but substantial amounts of carbon dioxide can still pollute to environment after burning.
There are many enterprises to carry out deep exploitation, but the flammable solution by being separated in pressure-swing absorption apparatus to methanol purge gas at present
Air-breathing is the gas of non-steady pressure, and discharge direct to stripping gas is a kind of greatly waste and pollution, and to stripping gas
Recycle and used, it is necessary to which its steady pressure could be supplied into fuel boiler, it is therefore desirable to which the stripping gas after pressure-variable adsorption is carried out
Voltage stabilizing is handled.
The content of the invention
Present invention solves the technical problem that being to provide a kind of can be used for the stripping gas voltage stabilizing come out from pressure-variable adsorption
The voltage stabilizing technique of the Utilization of PSA Relief Gas of heat distribution pipe network burning.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：A kind of Utilization of PSA Relief Gas it is steady
Pressure technique, using stripping gas of the 4.3Mpa methanol purge gas as unstripped gas after the direct pressure-variable adsorption of gas-liquid separator rinses, pass through
Stripping gas surge tank, stripping gas blending tank, incoming fuel gas gas holder, the fuel gas sent out from the fuel gas gas holder are to press
The stable combustible gas of power.
The combustible gas is burnt through roots blower forced feed heat distribution pipe network.
When fuel gas can not be lighted in the fuel gas gas holder, into the fuel gas gas holder pressurization be mixed into oven gas or
Methanol purge gas.
The technological process includes stripping gas surge tank, stripping gas blending tank, fuel gas gas holder and roots blower group, described
The outlet of stripping gas surge tank entrance connection Utilization of PSA Relief Gas, the stripping gas blending tank entrance connect stripping gas buffering respectively
Tank exports and Utilization of PSA Relief Gas outlet, and the fuel gas gas holder entrance is connected with stripping gas blending tank outlet, described
Fuel gas gas cabinet outlet is connected with roots blower group entrance, and the roots blower group outlet connects with extraneous gas pipeline；It is described
Roots blower group is 2-5 Fans；The fuel gas gas holder is wet type multistage gas holder.
The stripping gas that hydrogen post is carried from pressure-variable adsorption is sent into gas holder, 3~4KPa of pressure stability, 15 are pressurized to through blower fan
~20KPa is sent to methanol fuel gas pipe network, is used for methanol conversion preheating furnace.
Technological process：The pressure swing adsorption hydrogen production post buffered tank of stripping gas delivers to stripping gas gas holder, in gas holder after voltage stabilizing
Send methanol fuel pipe network to be used for methanol conversion procedure heating furnace after the pressurization of stripping gas blower fan, replace methanol purge gas for synthesis
Ammonia produces.
Operation principle
Gas holder operation principle
If bell jar and weight gross weight are G, if admission pressure P, the power acted at the top of whole bell jar is G1, then G1=PF=G.Add
To the buoyancy of bell jar, therefore gas holder can rise along guide rail when air inlet.But when gas holder input tolerance is less than gas output, gas in gas
Body is reduced, and gas density reduces, and pressure declines.At this moment gas holder declines in the case where being acted on from weight along guide rail, and the pressure in gas holder is extensive
When again to original pressure, gas holder just stops declining.Gas holder inlet and outlet have water sealed tank, are acted on by the overflow of overflow pipe, make water
Water in groove keeps certain height, has two pipelines to stretch out the water surface in tank.One is air inlet pipe, and another is escape pipe.
The water level that the annular water seal of bell jar, middle section is kept certain height before being supplied gas to gas holder, water level keeps overflow in tank.When in gas holder
During tolerance increase, bell jar, middle section successively rise, otherwise successively declined.Safety guard is provided with the top of bell jar, when bell jar drops to minimum
During volume, safety guard on the mouth of pipe of escape pipe, immerse the water surface and form water seal by the bottom of safety guard, can prevent from taking out bell jar flat.
The inlet/outlet pipe of gas holder has water seal, during to stop and front and rear isolation of system.
Roots blower operation principle
Roots blower is that positive displacement turns round blower fan, sets the rotors of a pair of mutually opposing rotations in casing, between rotor, turn
There is appropriate gap between son and casing, form inlet chamber and mutually completely cut off with discharge chamber, by means of the rotation of rotor, make gas
Pushed to by inlet chamber after discharge chamber and discharge body, complete air-breathing, the process of exhaust, Roots blower, rotate a circle completion six
Secondary air-breathing exhaust process, therefore operation is more steady, vibrations are smaller, and noise is lower.
Gas is without compression variation in body, and during to exhaust outlet, because exhaust outlet is equal with working resistance, discharge gas will
It could be discharged after overcoming resistance, therefore form the pressure of gas, so the rotating speed of the volume of compressor flow size and blower fan, blower fan
It is relevant.
As described above, the present invention has an advantageous effect in that compared with prior art：Present invention employs gas holder to solve
The problem of stripping gas pressure transient so that stripping gas can be used in the burning of heat distribution pipe network, farthest be effectively utilized
Stripping gas, while pollution will not be produced to environment.The present invention uses roots blower, and its is with small vibration, and noise is low；Fan performance is lasting
It is constant, it can continuously run for a long time；Capacity utilization is big, and volumetric efficiency is high, service life of fan length.
Brief description of the drawings
The present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is structured flowchart of the present invention.
Embodiment
The specific embodiment of the invention is a kind of voltage stabilizing technique of Utilization of PSA Relief Gas, using 4.3Mpa methanol purge gas as original
Expect stripping gas of the gas after the direct pressure-variable adsorption of gas-liquid separator rinses, by stripping gas surge tank, stripping gas blending tank, enter
Fuel gas gas holder, the fuel gas sent out from the fuel gas gas holder are the combustible gas of pressure stability.
The combustible gas is burnt through roots blower forced feed heat distribution pipe network.
When fuel gas can not be lighted in the fuel gas gas holder, into the fuel gas gas holder pressurization be mixed into oven gas or
Methanol purge gas.
The technological process includes stripping gas surge tank, stripping gas blending tank, fuel gas gas holder and roots blower group, described
The outlet of stripping gas surge tank entrance connection Utilization of PSA Relief Gas, the stripping gas blending tank entrance connect stripping gas buffering respectively
Tank exports and Utilization of PSA Relief Gas outlet, and the fuel gas gas holder entrance is connected with stripping gas blending tank outlet, described
Fuel gas gas cabinet outlet is connected with roots blower group entrance, and the roots blower group outlet connects with extraneous gas pipeline；It is described
Roots blower group is 2-5 Fans；The fuel gas gas holder is wet type multistage gas holder.
Concrete technology condition of the present invention and control.
Pressure monitor index
The KPa of gas holder inlet pressure 2.0~4.5（G）
The KPa of gas cabinet outlet pressure 2.0~4.5（G）
The KPa of stripping gas fan outlet pressure 16.0~21.0（G）
Stripping gas sends the KPa of manifold pressure 16.0~21.0 outside（G）
Monitoring temperature index
Gas holder entrance stripping gas temperature≤45 DEG C
Stripping gas fan outlet main temperature≤65 DEG C
Blower fan gear end, belt wheel end bearing temperature≤80 DEG C
Gear case of blower oil temperature≤+ 35 DEG C of environment temperature
Liquid level monitoring index
Gas holder height 4.5m~11.0m
Gear case of blower oil level 40~60%
Gas holder tank water level：Apart from overfall 150mm~200mm
Alarm and interlock protection index
Gas holder height H >=11.0m, L≤4.0m
Stripping gas fan outlet manifold pressure L≤12.0Kpa, L≤10.0Kpa
PSA program hired roughnecks move, and open methanol purge gas house steward's nitrogen valve, and single column boosts to 0.1MPa successively, passes through
KV21103A-N valves, HV21201A (odd number tower), HV21201B（Even numbers tower）Pressure release passes through to stripping gas blending tank V2103
PV21204 distinguishes displacement desorption gas house steward to gas holder inlet line, gas holder, opens diffusion valve at the top of gas holder, gas holder keeps 2m high
Degree, it is qualified from the continuous oxygen content ＜ 0.1% three times of top exhaust stack sample point detection, diffusion valve at the top of gas holder is closed, stops putting
Change.
After gas holder displacement is qualified, it is another to gas holder imported valve forward flange, backward-substitition gas holder to take oven gas fan outlet apart
One import, taking flange sampling detection apart before valve, continuously oxygen content ＜ 0.1% is qualified three times, stops displacement, closes valve and lead to
Know that maintenance recovers flange.
After gas holder displacement is qualified, backward-substitition fan outlet regulating valve by-pass pipeline, discharged from regulating valve showering guilding valve, from tune
It is qualified to save the continuous oxygen content ＜ 0.1% three times of valve showering guilding valve detection, closes regulating valve showering guilding valve.
1# blower fan import and export valves are opened, close blower fan shortcut valve, methanol battery limit (BL) stripping gas main valve is closed, opens desorption
Gas diffusion valve, the continuous oxygen content ＜ 0.1% three times of detection is qualified at methanol battery limit (BL) stripping gas diffusion valve, stops displacement 1# blower fans.
After blower fan displacement is qualified, 2#, 3# blower fan are replaced successively according to 1# blower fans method of replacing, stripping gas is put from methanol battery limit (BL)
It is qualified to dissipate the continuous oxygen content ＜ 0.1% three times of detection at valve, closes methanol battery limit (BL) stripping gas diffusion valve, protects pressure-fired.
Stripping gas is replaced
Stripping gas distinguishes displacement desorption gas house steward to gas holder inlet line, gas holder by PV21204, opens and is diffused at the top of gas holder
Valve, gas holder keep lower height, and component and Utilization of PSA Relief Gas component one are continuously detected three times from top exhaust stack sample point
Cause, close diffusion valve at the top of gas holder, stop displacement.Gas holder is replaced during displacement gas holder simultaneously to enter, locate saliva envelope and blower fan tune
Save valve by-pass.
Gas cabinet outlet atmospheric valve is opened, gas holder outlet conduit is replaced, component is continuously detected three times from gas cabinet outlet sample point
It is consistent with Utilization of PSA Relief Gas component, gas cabinet outlet atmospheric valve is closed, stops displacement.
1# stripping gas booster fan import and export atmospheric valves are opened, close return valve, outlet valve, replace 1# blower fans.
Zero load startup 1# stripping gas booster fans, methanol battery limit (BL) stripping gas main valve is closed, opens stripping gas diffusion valve, from
It is consistent with Utilization of PSA Relief Gas component that component is continuously detected at methanol battery limit (BL) stripping gas diffusion valve three times, stops displacement 1# desorptions
Gas booster fan.
After the displacement of 1# stripping gas booster fan is qualified, 2#, 3# are replaced successively according to 1# stripping gas booster fan method of replacing
Blower fan, detection component is consistent with Utilization of PSA Relief Gas component at methanol battery limit (BL) stripping gas diffusion valve, closes methanol battery limit (BL) solution
Air-breathing diffusion valve, contacted with methanol control room and open methanol within battery limit stripping gas main valve, be increasingly incorporated into methanol fuel gas pipe network, supplied
Methanol conversion preheating furnace is used.
The principle and its effect of the above-mentioned merely exemplary explanation present invention of embodiment, not for the limitation present invention.For
Person skilled in the art can be all modified above-described embodiment or changed under the spirit and scope without prejudice to the present invention.Therefore,
It is all lift have in the technical field usually intellectual without departing from disclosed spirit with being completed under technological thought
All equivalent modifications or change, should by the present invention claim be covered.
Claims (4)
- A kind of 1. voltage stabilizing technique of Utilization of PSA Relief Gas, it is characterised in that：It is unstripped gas through gas using 4.3Mpa methanol purge gas Stripping gas after the direct pressure-variable adsorption flushing of liquid/gas separator, by stripping gas surge tank, stripping gas blending tank, incoming fuel gas gas Cabinet, the fuel gas sent out from the fuel gas gas holder are the combustible gas of pressure stability.
- A kind of 2. voltage stabilizing technique of Utilization of PSA Relief Gas according to claim 1, it is characterised in that：The combustible gas warp Roots blower forced feed heat distribution pipe network is burnt.
- A kind of 3. voltage stabilizing technique of Utilization of PSA Relief Gas according to claim 1, it is characterised in that：When the fuel gas When fuel gas can not be lighted in gas holder, pressurizeed into the fuel gas gas holder and be mixed into oven gas or methanol purge gas.
- A kind of 4. voltage stabilizing technique of Utilization of PSA Relief Gas according to claim 1, it is characterised in that：The technological process Including stripping gas surge tank, stripping gas blending tank, fuel gas gas holder and roots blower group, the stripping gas surge tank entrance connection Utilization of PSA Relief Gas exports, and the stripping gas blending tank entrance connects the outlet of stripping gas surge tank and pressure-variable adsorption desorption respectively Gas exports, and the fuel gas gas holder entrance is connected with stripping gas blending tank outlet, the fuel gas gas cabinet outlet and Roots Wind unit inlet is connected, and the roots blower group outlet connects with extraneous gas pipeline；The roots blower group is 2-5 typhoons Machine；The fuel gas gas holder is wet type multistage gas holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825560.4A CN107469566A (en) | 2017-09-14 | 2017-09-14 | A kind of voltage stabilizing technique of Utilization of PSA Relief Gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825560.4A CN107469566A (en) | 2017-09-14 | 2017-09-14 | A kind of voltage stabilizing technique of Utilization of PSA Relief Gas |
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| Publication Number | Publication Date |
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| CN107469566A true CN107469566A (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825560.4A Pending CN107469566A (en) | 2017-09-14 | 2017-09-14 | A kind of voltage stabilizing technique of Utilization of PSA Relief Gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701359A (en) * | 2019-03-05 | 2019-05-03 | 四川天一科技股份有限公司 | A kind of efficient pressure-swing absorption apparatus stripping gas buffer system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201988309U (en) * | 2011-03-14 | 2011-09-28 | 四川达兴能源股份有限公司 | Methanol purge gas treatment system |
| CN102765733A (en) * | 2012-08-01 | 2012-11-07 | 河南中鸿集团煤化有限公司 | Device and technique of producing liquid ammonia by coke oven gas and methanol relief gas |
| CN102940997A (en) * | 2012-11-29 | 2013-02-27 | 昊华宇航化工有限责任公司 | Chloroethylene constant temperature pressure-swing adsorption-desorption gas purification process |
| CN105727687A (en) * | 2015-06-01 | 2016-07-06 | 代元军 | Desorption gas recycling apparatus and desorption gas recycling method for pressure swing adsorption apparatus |
-
2017
- 2017-09-14 CN CN201710825560.4A patent/CN107469566A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201988309U (en) * | 2011-03-14 | 2011-09-28 | 四川达兴能源股份有限公司 | Methanol purge gas treatment system |
| CN102765733A (en) * | 2012-08-01 | 2012-11-07 | 河南中鸿集团煤化有限公司 | Device and technique of producing liquid ammonia by coke oven gas and methanol relief gas |
| CN102940997A (en) * | 2012-11-29 | 2013-02-27 | 昊华宇航化工有限责任公司 | Chloroethylene constant temperature pressure-swing adsorption-desorption gas purification process |
| CN105727687A (en) * | 2015-06-01 | 2016-07-06 | 代元军 | Desorption gas recycling apparatus and desorption gas recycling method for pressure swing adsorption apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701359A (en) * | 2019-03-05 | 2019-05-03 | 四川天一科技股份有限公司 | A kind of efficient pressure-swing absorption apparatus stripping gas buffer system |
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Application publication date: 20171215 |
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