CN102382701B - Device capable of removing siloxane in combustible gas stably and continuously - Google Patents
Device capable of removing siloxane in combustible gas stably and continuously Download PDFInfo
- Publication number
- CN102382701B CN102382701B CN2011103387794A CN201110338779A CN102382701B CN 102382701 B CN102382701 B CN 102382701B CN 2011103387794 A CN2011103387794 A CN 2011103387794A CN 201110338779 A CN201110338779 A CN 201110338779A CN 102382701 B CN102382701 B CN 102382701B
- Authority
- CN
- China
- Prior art keywords
- valve
- gas
- parallel
- pipeline
- vaporizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Separation By Low-Temperature Treatments (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a device capable of removing siloxane in combustible gas stably and continuously, which belongs to the field of utilization and purification of renewable energy sources. The device comprises a refrigeration cycle, a landfill gas circulation system and a monitoring and control system, and particularly comprises a compressor, a gas-liquid separator, a condenser, two evaporators in parallel connection, an expansion valve, a drying filter, a liquid viewer, a pre-cooling heat exchanger, a sewage discharging device, a temperature sensing device, a pressure gauge, a pluralityof valves and pipelines. A novel defrosting method of self-defrosting of incoming gas is provided, refrigeration and defrosting can be operated independently and simultaneously, and effective defrosting is achieved while stable operation of the refrigeration system can be guaranteed. Meanwhile, due to the precise control system, the temperature of the landfill gas can be kept within a set temperature in the whole treatment process, and impurities such as siloxane, water and the like in the landfill gas can be removed stably, continuously and effectively.
Description
Technical field
The present invention relates to a kind of removal device at impurity in the inflammable gas, it mainly is for the siloxanes impurity of removing combustible gas, belongs to the renewable energy utilization field of purification.
Background technology
Contain a large amount of methane in the biomass gas such as refuse embedded gas, biogas, oil field gas, compare and allow it be discharged into to cause Greenhouse effect to worsen in the atmosphere, come then energy-conserving and environment-protective more of combustion power generation with it as raw material.Yet in refuse embedded gas, biogas, oil field gas body, contain impurity and moisture such as a certain amount of siloxanes, in combustion processes, can work the mischief to equipment.
If burning contains the refuse embedded gas of volatile siloxane, produce silicon dioxide layer at the oil engine internal surface, the silicon-dioxide tectum engine parts that will wear and tear, and hinder the lubrication of combustion heat-exchange and lubricant; Then can influence its transient equilibrium for internal combustion turbine; The siloxanes of thickness can blocking filter and blow-off line, obstruction gas flow and liquid impurities discharging.In addition, also can cause corrosion to equipment if contain large quantity of moisture in the fuel gas, reduce combustion heat-exchange efficient and generating efficiency, when serious even make generator flame-out, therefore maybe can't light a fire, it is very necessary removing impurity such as moisture in the inflammable gas and siloxanes.
At present, it is more that biomass gas removes the method for siloxanes, and feasible having puts goods on the market: adsorption technology, absorption techniques and cryogenics.Absorption and absorption techniques must be regenerated to sorbent material, absorption agent, and sorbent material reduces with the increase of the humidity adsorption rate to siloxanes, and not only treatment effect is bad but also cost increases.Proved that now working as pressure is 25bar, when temperature was reduced to-29 ℃, the siloxanes decreasing ratio in the refuse embedded gas can reach 95%; And under this temperature, the heavy carbon hydrocarbon impurity of the moisture in the landfill gas and part also can remove; So the siloxanes that adopts Deep Cooling Method to remove in the biomass gas is feasible.At present, the research that Deep Cooling Method is taken off siloxanes at home and abroad also has much, but exists defrosting effect not good, influences system stability and can not processed continuously problem.
Patent of invention of the U.S.: siloxanes is removed the refrigeration system that system (publication number: US 2004/0045440 A1) adopts a cover to be furnished with two vaporizers, make the refuse embedded gas of incoming flow by alternately passing through two vaporizers behind the pre-cooler, the gas that is cooled after handling returns the refuse embedded gas that pre-cooler is used for cooling off incoming flow.In refrigerant-cycle systems, make the refrigeration agent after the throttling feed the refuse embedded gas that corresponding vaporizer cools off incoming flow, utilize refrigeration agent to come cold and to its defrosting from condenser another vaporizer that comes out to flow through simultaneously; Two vaporizer alternate cycles like this are attempted to reach continuously refuse embedded gas are cooled off the effect that removes siloxanes, and accompanying drawing 1 is the structural representation of this invention.The experiment proved that, there is following problem in this system: 1, in this system's valve handoff procedure, temperature recovery was very high when the refuse embedded gas of incoming flow was changed at two vaporizers, after switching, system's gas body in future is handled design temperature needs a stabilization process, the processing of this stage to gas do not reach requirement, can not realize really removing continuously siloxanes; 2, the Defrost mode of this system was cold defrosting, in refrigerant-cycle systems, easily caused absorbing gas belt liquid, and temperature, the pressure and other parameters of refrigerant-cycle systems in two vaporizers alters a great deal the stability decreases of system; 3, this system pipeline system and Controlling System complexity, and when handling gas and do not reach preset temp also descend to the precooling effect of incoming flow gas, and then strengthen the load of refrigeration system, the operation of total system is handled caused vicious cycle.
Summary of the invention
At the deficiency that exists in the above-mentioned siloxanes removal system, the purpose of this invention is to provide a kind of device of realizing really removing continuously impurity such as siloxanes in the refuse embedded gas and moisture, can when guaranteeing refrigeration system steady running, effectively defrost.
For achieving the above object, the technical solution used in the present invention is:
A kind of steady and continuous removes the device of siloxanes in the inflammable gas, comprises cooling cycle system, the refuse embedded gas recycle system and monitoring and Controlling System:
Cooling cycle system comprises compressor, gas-liquid separator, condenser, two vaporizers and expansion valve, device for drying and filtering, liquid-sighting glass, a plurality of valve and pipeline; Described two vaporizer parallel connections, the import of its parallel pipeline connects liquid-sighting glass, device for drying and filtering and condenser successively by T-valve, and the outlet of parallel pipeline connects gas-liquid separator and compressor successively by T-valve;
The refuse embedded gas recycle system comprises two vaporizers in parallel, pipeline, three blowdown apparatus and a plurality of valve of precool heat exchanger device, described cooling cycle system; The parallel pipeline import of described two vaporizers in parallel is connected with the precool heat exchanger device by T-valve respectively with outlet; Described three blowdown apparatus are connected with the vaporizer of described precool heat exchanger device and two parallel connections respectively; Also interconnect by valve between described two vaporizers in parallel;
Monitoring comprises a plurality of temp-sensing devices, tensimeter and valve with Controlling System; Temp-sensing device is located at respectively on the vaporizer of described precool heat exchanger device and two parallel connections, also is located at the exit of the parallel pipeline of described two vaporizers in parallel; Described Controlling System is come the open and close of by-pass valve control according to the value of feedback of temperature.
Device of the present invention adopts the use in parallel of two vaporizers, has following beneficial effect:
(1) incoming flow gas has been proposed first innovatively from defrosting mode.Compare in the past hot-gas bypass, Defrost mode such as cold excessively, the present invention utilizes incoming flow high-temperature gas self heat to melt frost in the interchanger; Defrosting load origin gas body is born, and directly carries out the caloic exchange, and defrosting effect is better, and can effectively utilize the defrosting cold, makes that incoming flow gas precooling effect is better;
(2) propose a kind of accurate control mode, can realize really removing continuously and stably impurity such as siloxanes, moisture.Process of refrigeration and defrost process can separately be controlled in the native system, and before handoff procedure, refrigeration agent has reached the evaporating pressure of design temperature in the interchanger, need not stabilization process, have guaranteed that the refuse embedded gas of system handles is stabilized in the lower temperature range always;
(3) apparatus of the present invention are simple and reliable, the processing efficiency height.The cooling cycle system of this device need not to bear the defrosting load, has avoided condensate depression to cause problems such as absorbing gas belt liquid greatly; And the valve handoff procedure, refrigerant temperature pressure also is stabilized in the working range, and system runs more secure, reliable.
Description of drawings
Fig. 1 is the structural representation of United States Patent (USP) in the background technology of the present invention " siloxanes removal system ".
Fig. 2 is the apparatus structure synoptic diagram that the present invention removes siloxanes in the inflammable gas.
Specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
As shown in Figure 2, apparatus of the present invention are made up of refrigerant-cycle systems, the refuse embedded gas recycle system and monitor control system.Refrigerant-cycle systems is by shown in the solid line, and the refuse embedded gas recycle system is by shown in the dotted line.
Cooling cycle system: formed two vaporizer parallel connections by compressor 1, condenser 2, vaporizer 3 and 4, expansion valve 8 and 9, device for drying and filtering 6, liquid-sighting glass 7 and some valves and pipeline.The high-temperature high-pressure refrigerant that comes out from compressor 1 device for drying and filtering 6 of after condenser 2 condensations, flowing through, alternating current is through two evaporating heat exchangers after controlling the refrigeration agent throttling by the open and close of valve, get back to compressor 1 through gas-liquid separator 5 again from the refrigeration agent that the vaporizer heat exchange is come out, finish a circulation.
The refuse embedded gas recycle system: by precool heat exchanger device 21, two T- valve 24 and 36, pipeline, blowdown apparatus 34,35 and 38 and some by-pass valve controls form.The incoming flow refuse embedded gas is after 21 precoolings of precool heat exchanger device, and the T-valve of flowing through flows through vaporizer for defrosting earlier by valve control, utilizes the incoming flow refuse embedded gas of high temperature that vaporizer is defrosted and obtains further precooling, and liquid impurity is discharged by blowdown apparatus; Refuse embedded gas after the defrosting is admitted to cooling vaporizer again and cools off, and the landfill gas of handling well is sent precool heat exchanger device 21 again back to and is used for the refuse embedded gas of the initial incoming flow of precooling, and temperature raises, and sends in the gas-holder at last.
Monitoring and Controlling System: formed by some temp-sensing devices 22,40,41 and 42, tensimeter, by-pass valve control.In Controlling System, come the open and close of by-pass valve control by the Temperature Feedback value, especially in switching process, make in switching front evaporator device refrigeration agent reach the evaporating pressure of design temperature by accurate by-pass valve control, guarantee that continuous effective ground handles.Adopt temperature control mode that the defrosting start and stop are differentiated, be provided with temp-sensing device at vaporizer, when temperature recovery during to (5-10 ℃), defrosting stops; Make system works move efficient stable more.
Hereinafter will specifically describe the system handles process:
At first, vaporizer 3 is used for cooling off refuse embedded gas, and vaporizer 4 is used for defrosting and crossing cold refuse embedded gas.
Coolant system: valve 13,17 is opened, and valve 14,19 is closed.The high-temperature high-pressure refrigerant that comes out from compressor 1 flows through device for drying and filtering 6 liquid-sighting glass 7 again after condenser 2 coolings, the pipeline 10 of flowing through is to T-valve 12, and this moment, valve 13 was opened, and 14 close; Refrigeration agent arrives expansion valve 8 through valve 13, low-temperature low-pressure refrigerant liquid and refuse embedded gas after the throttling carry out heat exchange, becoming low-pressure gas flows out from pipeline 15 again, arrive T-valve 18 through valve 17, come out to deliver to gas-liquid separator 5 by pipeline 11 from T-valve 18 again and get back to compressor 1 at last, finish a refrigeration cycle.
The refuse embedded gas system: valve 25,30 is opened, and valve 26,29 is closed.The refuse embedded gas of incoming flow is sent into precool heat exchanger device 21 by preliminary precooling by pipeline 20, and small amount of impurities wherein and moisture are discharged from blowdown apparatus 38.Landfill gas after the precooling flows out from pipeline 23 and enters T-valve 24, and this moment, valve 25 was opened, and 26 close; Landfill gas process valve 25 and pipeline 27 are sent in the vaporizer 4 and are carried out the caloic exchange with wherein condensation impurity and frost, the refuse embedded gas of high temperature melts the frost in the vaporizer 4 and by further precooling, and liquid water and be partially soluble in siloxanes in the water and impurity such as heavy carbon hydrocarbon is discharged by blowdown apparatus 35.This moment, valve 29 was closed, and valve 33 is opened, and refuse embedded gas flows out into 3 cooled doses in vaporizer from pipeline and is cooled to-29 ℃, and most impurity, moisture and siloxanes are condensed and discharge by blowdown apparatus 34.The refuse embedded gas of handling well is sent into T-valve 36 through valve 30 and pipeline 32, and flows out from the outlet of threeway and to send precool heat exchanger device 21 back to by pipeline 37, the refuse embedded gas of incoming flow is tentatively cooled off, finally by delivering to gas-holder or combustion equipment by pipeline 39.16,28,31 is pipeline.
After operation for some time, show and the temperature of vaporizer 4 itself obviously rise (reaching 5-10 ℃) when temp-sensing device 42 this moment, illustrate that vaporizer 4 defrostings are complete, by temp-sensing device 42 temperature value is fed back to Controlling System, close valve 25,33 this moment, valve 26 is opened, and the incoming flow refuse embedded gas directly enters behind precool heat exchanger device 21 coldly in the vaporizer 3 but to be handled.
Rerun after for some time, rise gradually when temp-sensing device 40 shows the refuse embedded gas temperature after handling in the vaporizer 3, frosting gradually in the vaporizer 3 this moment is described, the heat exchange effect descends; By temp-sensing device 40 temperature value is fed back to Controlling System.At this moment, valve 14,19 is opened, refrigeration agent flow through vaporizer 4 and with its cooling 2-5 minutes after, refrigeration agent has reached the saturated evaporating pressure value of design temperature; Valve 29,33 is opened, valve 13,17,25,30 is closed again; At this moment, vaporizer 3 is used for defrosting.Incoming flow gas is introduced into vaporizer 3 it is defrosted, and through the processing that is cooled of valve 33 inflow evaporators 4, gets back at last and delivers to gas-holder or combustion equipment after precool heat exchanger device 21 heats up again.
In this handoff procedure, by the accurate control of Controlling System, guaranteed that incoming flow gas exchanges in the inverted process also can handle the temperature that requires in two interchanger, really realized removing continuously the purpose of impurity such as siloxanes and moisture.
Claims (1)
1. a steady and continuous removes the device of siloxanes in the inflammable gas, comprises cooling cycle system, the refuse embedded gas recycle system and monitoring and Controlling System, it is characterized in that:
Cooling cycle system comprises compressor (1), gas-liquid separator, condenser (2), two vaporizers and expansion valve, device for drying and filtering (6), liquid-sighting glass (7), a plurality of valve and pipeline; Described two vaporizer parallel connections, first import of its parallel pipeline connects liquid-sighting glass, device for drying and filtering and condenser successively by first T-valve (12), and first outlet of parallel pipeline connects gas-liquid separator and compressor successively by second T-valve (18);
The refuse embedded gas recycle system comprises precool heat exchanger device (21), pipeline, three blowdown apparatus and a plurality of valve; Parallel pipeline second import of two vaporizers in parallel of described cooling cycle system is connected with precool heat exchanger device (21) by the 3rd T-valve (24), the 4th T-valve (36) respectively with second outlet; Described three blowdown apparatus are connected with the vaporizer of described precool heat exchanger device (21) and two parallel connections respectively; Also interconnect by valve (33) between described two vaporizers in parallel;
Monitoring comprises a plurality of temp-sensing devices, tensimeter and valve with Controlling System; Temp-sensing device is located at respectively on the vaporizer of described precool heat exchanger device and two parallel connections, also is located at second exit of the parallel pipeline of described two vaporizers in parallel; Described Controlling System is come the open and close of by-pass valve control according to the value of feedback of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103387794A CN102382701B (en) | 2011-11-01 | 2011-11-01 | Device capable of removing siloxane in combustible gas stably and continuously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103387794A CN102382701B (en) | 2011-11-01 | 2011-11-01 | Device capable of removing siloxane in combustible gas stably and continuously |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102382701A CN102382701A (en) | 2012-03-21 |
| CN102382701B true CN102382701B (en) | 2013-10-09 |
Family
ID=45822540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103387794A Expired - Fee Related CN102382701B (en) | 2011-11-01 | 2011-11-01 | Device capable of removing siloxane in combustible gas stably and continuously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102382701B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910389A (en) * | 2016-04-27 | 2016-08-31 | 南京师范大学 | Removing device for siloxanes in biomass gas |
| CN105928320A (en) * | 2016-04-27 | 2016-09-07 | 南京师范大学 | Cold accumulation type device for removing siloxane in biomass gas |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530220A (en) * | 2020-04-30 | 2020-08-14 | 南京碳环生物质能源有限公司 | Condensation treatment method and device for removing siloxane component in biomass gas |
| CN114806663A (en) * | 2022-05-19 | 2022-07-29 | 上海林海生态技术股份有限公司 | Cooling system for decarbonization system of methane purification device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185827A (en) * | 2006-09-15 | 2008-05-28 | 英格索尔-兰德能源系统公司 | System and method for removing water and siloxanes from gas |
| US7393381B2 (en) * | 2003-06-19 | 2008-07-01 | Applied Filter Technology, Inc. | Removing siloxanes from a gas stream using a mineral based adsorption media |
| CN101224348A (en) * | 2007-10-15 | 2008-07-23 | 吴未立 | Method of removing siloxane from combustible gas, application and system thereof |
| CN202297538U (en) * | 2011-11-01 | 2012-07-04 | 南京师范大学 | Device for stably and continuously removing siloxane from combustible gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6712885B1 (en) * | 2002-09-05 | 2004-03-30 | Pioneer Air Systems, Inc. | Siloxane removal system |
-
2011
- 2011-11-01 CN CN2011103387794A patent/CN102382701B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7393381B2 (en) * | 2003-06-19 | 2008-07-01 | Applied Filter Technology, Inc. | Removing siloxanes from a gas stream using a mineral based adsorption media |
| CN101185827A (en) * | 2006-09-15 | 2008-05-28 | 英格索尔-兰德能源系统公司 | System and method for removing water and siloxanes from gas |
| CN101224348A (en) * | 2007-10-15 | 2008-07-23 | 吴未立 | Method of removing siloxane from combustible gas, application and system thereof |
| CN202297538U (en) * | 2011-11-01 | 2012-07-04 | 南京师范大学 | Device for stably and continuously removing siloxane from combustible gas |
Non-Patent Citations (2)
| Title |
|---|
| 吸附法脱除浓盐酸中微量硅氧烷的研究;王桂英 等;《吉林化工学院学报》;20110531;第28卷(第5期);第5-9，14页 * |
| 王桂英 等.吸附法脱除浓盐酸中微量硅氧烷的研究.《吉林化工学院学报》.2011,第28卷(第5期),第5-9，14页. |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910389A (en) * | 2016-04-27 | 2016-08-31 | 南京师范大学 | Removing device for siloxanes in biomass gas |
| CN105928320A (en) * | 2016-04-27 | 2016-09-07 | 南京师范大学 | Cold accumulation type device for removing siloxane in biomass gas |
| CN105910389B (en) * | 2016-04-27 | 2018-12-11 | 江苏优淼环保工程有限公司 | Siloxanes removing means in a kind of biogas |
| CN105928320B (en) * | 2016-04-27 | 2018-12-18 | 南京师范大学 | Siloxanes removing means in a kind of cool-storage type biogas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102382701A (en) | 2012-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6657378B2 (en) | Flexible conversion of gas processing plant waste heat to power and cooling based on an improved Goswami cycle | |
| CN108211648B (en) | Heat recovery type condensation and temperature and pressure swing adsorption combined process oil gas recovery device | |
| CN102620461A (en) | Auto-cascade jet type refrigerator | |
| CN102382701B (en) | Device capable of removing siloxane in combustible gas stably and continuously | |
| CA2830623C (en) | Solid co2 adsorbent material system | |
| CN103827614A (en) | Cryogenic CO2 separation using a refrigeration system | |
| CN108507083B (en) | Ice-storage type heat source tower heat pump system device and method | |
| CN103409188B (en) | Process unit and method for removing heavy hydrocarbon during liquefaction process of natural gas | |
| CN100420732C (en) | Process for lyophilization and heavy hydrocarbon removal of petroleum natural gas | |
| WO2022150524A1 (en) | Integrated heat management systems and processes for adsorbed natural gas storage facilities | |
| CN105910456A (en) | Green comprehensive cold island equipment and cooling method | |
| CN202864921U (en) | Small liquid nitrogen preparation device | |
| CN102052101A (en) | System and method for improving performance of an igcc power plant | |
| RU2280826C2 (en) | Method and plant for partial natural gas liquefaction | |
| CN202297538U (en) | Device for stably and continuously removing siloxane from combustible gas | |
| CN209702668U (en) | A kind of gas recovery system for oil | |
| CN108151442A (en) | The low temperature preparation system of LNG in unstripped gas | |
| RU2769867C1 (en) | Unit for preparing hydrocarbon gas for transport | |
| CN212253259U (en) | Compression condensing unit for automatically controlling defrosting system by utilizing hot fluorine gas | |
| WO2007146281A2 (en) | Biogas fuel conditioning system | |
| CN203429146U (en) | Process device for removing heavy hydrocarbon in liquefaction process of natural gas | |
| CN105928320B (en) | Siloxanes removing means in a kind of cool-storage type biogas | |
| CN100491874C (en) | Method for removing nitrogen monoxide gathering in large oxygen-making machine | |
| KR101108029B1 (en) | Heat Pump | |
| CN108151362A (en) | A kind of refrigeration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20141101 |
|
| EXPY | Termination of patent right or utility model |